Improvements relating to switching devices for use in dial illuminating arrangements

... 517,393. Wireless receiving sets. KOLSTER-BRANDES, Ltd., and LAWRANCE, R. S. July 26, 1938, No. 22219. [Class 40 (v)] In an arrangement in which switching means is associated with the tuning member to light a dial-illuminating lamp during the tuning operation, the spindle of the tuning member is included in the circuit of the lamp and the circuit may be completed by a push-button switch 7, Fig. 1, operable by gripping the knob 6, or by longitudinal movement of the shaft, Fig. 2. In Fig. 1, the circuit of the lamp 14 includes the chassis 1, spindle-supporting frame 2, spindle 3a, button 7, spring supporting-tongue 13, contact plate 8, and a spring-pressed ball 9. The spindle comprises two parts connected by a ball-race 4 and pressed together by a spring 5. In Fig. 2, longitudinal movement of the spindle completes a circuit including frame 2, spindle extension 21, and contact 22. The restoring springs 13, Fig. 1, and 24, 25, Fig. 2, are optional and when they are provided there may be means ...

Improvements in and relating to illuminated dials for wireless receivers and like devices

... 446,749. Adjusting wireless apparatus. HESKETH, B., c/o McMichael Radio, Ltd., Wexham Road, Slough, Buckinghamshire. Nov. 1, 1934, No. 31324. [Class 37] In order to obtain a more open tuning scale a spot of light is caused to move over a translucent scale with a zigzag movement obtained by reciprocating a light source on the end of the tuning shaft. The tuning shaft has pivoted at one end a lamp 11 which is rocked by a link 15 and crank rod 17 operated by a loose pinion 6 driven by an arm 5. Alternatively a cam and push rod may be employed to rock the lamp. The lamp 11 may have a lens 13 with a light aperture throwing an image upon the scale.

Improvements in tuning devices for radio receivers and the like

... 379,115. Adjusting wireless apparatus. WHITTINGHAM, R. B. and PORTADYNE RADIO, Ltd., Portadyne Works, Gorst Road, North Acton, London. Sept. 18, 1931, No. 26156. [Class 37.] In an arrangement enabling quick adjust. ment of two tuning condensers of radio receivers to tune circuits associated therewith to the same wavelength, each condenser c, d is separately adjustable and is provided with its own scale, c<2>, d<2> one of these scales d<2> being arranged behind the other which is transparent, and each scale is provided with an indicating line c<3>, d<4>, the arrangement of the lines being such that when one is superposed on or intersects the other over a fixed hair line f or other fixed point, the two circuits are mutually in tune. The scales may be of the drum or the disc type and the lower scale d<2> may be graduated in wavelengths or otherwise. The condensers are arranged on the same axis and are actuated by knurled or roughened discs c<1>, d<1>, an escutcheon plate e being arranged in ...

Improvements in or relating to tilting tuning-indicators for wireless sets

... 623,504. Indicating-apparatus. PHILIPS LAMPS, Ltd. May 6, 1947, No. 12236. Convention date, Dec. 15, 1944. [Class 40 (v)] In a tiltable tuning indicator for a wireless set having a scale plate of glass and a pointer which slides along it, two light sources are located at each side of the plate and in the plane thereof and are housed in cylindrical drums, which serve in addition as the pivots for the scale. The axis of the index is located in a recess of the scale plate extending over at least the range through which the index is movable so that the axis of the index is coincident with that of the scale plate. As shown, the hinge 19 of the index 3 is located in a recess 31 provided along the bottom edge of the scale plate 1. An extension 21 projects through a slit in the top of the cabinet and is supported by a slider 27 which moves along a guide rod by means of a cord, the index being forced against the scale by a spring which is attached to the extension 21. Two lamps 7 are housed in cylindrical ...

Improvements in hand-operated indicators for facilitating identification of wireless transmitting stations

... 424,423. Calculating - apparatus. RICHARDSON, E., 17, Boscombe Road, Shepherd's Bush, London. Aug. 16, 1933, No. 22923. [Class 106 (i)] A hand-operated device for use in calculators relating to the tuning of wireless receivers comprises a base member having a series of scales b<1> divided into different numbers of parts, a disc a rotatable on the base member and provided with slots a<2> and " zones " a<1>, and a masking member rotatable above the disc and having a sector-shaped slot to expose any one zone. The tuning range of a wireless set is divided into a number of zones, the beginning and end of each zone being the wavelength of an easily-identified station. Each zone is divided again into " channels " spaced apart an equal number of wavelengths, the spacing being such that a different station could occupy each channel. The degrees of movement of the tuning dial in passing from one end of a zone to the other are determined and, assuming the same movement for each unit change of wavelength ...

Improvements in or relating to indicating scales or dials for instruments, more particularly wireless receiving instruments

... 428,370. Indicating-apparatus. PLESSEY CO., Ltd., Vicarage Lane, Ilford, and PACKMAN, P. J., 129, Pembroke Road, Seven Kings, both in Essex. Nov. 4, 1933, No. 30694. [Class 106 (iv)] [See also Group XXXVI] A flexible scale or dial member, particularly for a wireless receiver, is stationarily mounted on a support and is maintained in tension by resilient means. As shown in rear elevation in Fig. 2 and in plan in Fig. 3, a scale member 10 comprising a strip of thin celluloid is mounted at its ends on a rigid support 11, which is of bowed form for attachment at the centre to the framework of the tuning condenser. At the rear of the flat end cheeks 12 of the support 11 are secured, by screws 13, wire springs 14 terminating in inturned prongs 17 passing through holes 15 in the cheeks 12 and engaging corresponding holes in the scale member 10, which is thus maintained taut and is forced at its ends against the cheeks 12 so that it is prevented from twisting. The screws 13 may be replaced by projections ...

Improvements in or relating to tuning scales for radio or the like receivers

... 475,121. Adjusting wireless apparatus. FERRANTI, Ltd., and EDWARDS, A. W. May 14, 1936, Nos. 13628/36 and 5489/37. [Class 37] A tuning indicating-arrangement for a radio receiver has a viewing scale bearing visibly all of a plurality of wave-ranges including a range of short waves, and is furnished with a separate movable dial and a source of light serving to illuminate the whole of the viewing scale and also to project an image of some of the indications on the movable dial. As shown in Fig. 1, a translucent scale 1 has long, medium, and short wave-lengths and station names marked thereon, and is illuminated from the rear by means of a lamp 2 and reflector 3. A needle 4 is moved across the scale by means of a cord 5 operated by an arm attached to a shaft driven by the shaft of the tuning condenser. The lamp 2 is carried by a removable bracket 6. In front of the lamp and over the scale is a small reflector 7 which reflects part of the light backwards, which reflected light, together with ...

Improvements in or relating to scales illuminated by edge lighting for wireless receiving and other apparatus

... 507,556. Adjusting wireless apparatus; illuminating clocks; indicating dials &c. HAUSERMANN VEREINIGTE FABRIKEN CHEMISCHER GRAVUREN UND METALLWAREN GES. Dec. 18, 1937, No. 35136 and 35137. Convention dates, Dec. 18, 1936 and May 28, 1937. [Class 37] [Also in Groups XVIII and XIX] An edge-lit scale for watches, clocks, measuring apparatus, tuning scales for wireless apparatus &c. is lit from one edge only and comprises a front transparent plate. bearing the matter to be illuminated, spaced approximately 1/10 mm. from a dark background plate to which it is secured peripherally by a raised edging or border. As applied to a tuning scale for a wireless receiver,. a front transparent plate A of glass, mica or synthetic material, has the scale indicia D, E, printed on its front or rear surface and is secured to the back-plate B of glass, metal, synthetic material, &c. by a raised border C, for example, of Chatterton's compound. The back-plate, if of glass, is rendered opaque or translucent except ...

TUNING APPARATUS

RADIO RECEIVER AND MAGNETIC TAPE PLAYER COMBINATION

... 1506063 Indicating apparatus MOTOROLA Inc 25 April 1975 [6 May 1974] 17298/75 Heading G1J [Also in Divisions F4 and H3] In a radio receiver and magnetic tape player having a door 20 mounted in a housing 15 so as to be movable between a position where an opening (12) Fig. 1 (not shown) in the housing is closed and a position clear of the opening to permit entry of a magnetic tape cartridge (14) Fig. 2 (not shown) a reflecting surface 29 is formed in a transparent portion 23 of the door 20 adjacent indicia on the door and co-operates with a reflecting surface 43 on a pointer 42 operatively connected to a radio tuning control (18) and an illumination source 40 such that reflection from the surface 43 of the pointer impinges on the reflecting surface 29 to illuminate the indicia when the door is in the closed position to indicate the frequency to which the receiver is tuned. The portion 23 which can be of acrylic plastics can include an extension 27 outlining AM/FM indicia 32, 33 on a translucent ...

RADIO RECEIVERS

TUNING APPARATUS

... 1482769 AFC systems; preset tuning arrangements SONY CORP 23 Dec 1974 [27 Dec 1973] 55561/74 Headings H3A and H3Q A tuning apparatus comprises a phase locked loop including a reference oscillator 11, a controlled oscillator 9, a variable frequency divider 8, a phase comparator 10; a dial plate 11 (see Fig. 2) having frequency marks covering a predetermined band; a coding arrangement 4 having a series of digital codes in correspondence with predetermined frequencies in the above band, a pick-up device 7 for reading a selected code and a control arrangement responsive to the output of device 7 for varying the divider ratio of 8. The digital code may be a binary or a binary gray code and read out optically, magnetically or mechanically. A fixed divider 17 may precede the divider 8. The coding arrangement may be provided on the dial plate itself. The read out device 7 may be movable with respect to the dial plate or vice versa.

COUNTING CIRCUIT FOR THE DETERMINATION OF THE EMPFANGSFREQUENZ AND/OR THE RECEIVING CHANNEL IN A HIGH FREQUENCY SUPERHETERODYNE RECEIVER

ZAEHLSCHALTUNG ZUR ERMITTLUNG DER EMPFANGSFREQUENZ BZW. DES EMPFANGSKANALS IN EINEM HOCHFREQUENZUEBERLAGERUNGSEMPFAENGER

VERFAHREN UND VORRICHTUNG ZUR BESTIMMUND DES KANALS, AUF WELCHEN EIN MIT EINER SPANNUNG ABSTIMMBARER EMPFAENGER ABGESTIMMT IST

VERFAHREN UND VORRICHTUNG ZUR BESTIMMUNG DES KANALS AUF WELCHEN EIN MIT EINER SPANNUNG ABSTIMMBARER EMPFAENGER ABGESTIMMT IST

PROCEDURE AND DEVICE FOR BESTIMMUND OF THE CHANNEL, WITH WHICH A WITH OF A TENSION OF TUNABLE RECEIVERS IS CO-ORDINATED

LIGHT CONDUCTOR PLATE

CONTROL ELEMENTS EXHIBITING FRONT PLATE OF EQUIPMENT OF THE COMMUNICATIONS TECHNOLOGY.

LOCALVARIABLE BROADCAST RECEIVER, LIKE CAR RADIO OR SUCH.

LIGHT CONDUCTOR PLATE

COMMUNICATION SYSTEM PRICE INCREASE DEVICE FOR AN AIRPLANE

GAS DISCHARGE DISPLAY SYSTEM

TUNING APPARATUS

RECEIVER TUNING

MONITORING SYSTEM FOR VOLTAGE TUNABLE RECEIVERS AND CONVERT- ERS

TUNING APPARATUS

TELEVISION CHANNEL INDICATOR

TUNING SYSTEM INCLUDING A MEMORY FOR STORING TUNING INFORMATION WITH USER CONTROLS ARRANGED TO FACILITATE ITS PROGRAMMING

RCA 71,198 TUNING SYSTEM INCLUDING A MEMORY FOR STORING TUNING INFORMATION WITH USER CONTROLS ARRANGED TO FACILITATE ITS PROGRAMMING In a tuning system for a television receiver including tuning voltage circuitry for generating and thereafter storing binary signals representing tuning voltages corresponding to the various channels a viewer may select for controlling a voltage variable tuning element, skip channel circuitry for generating and thereafter storing binary signals representing whether or not each of the channels is preferred, channel selection circuitry for retrieving the stored binary signals when a viewer depresses either an up or down push button, a mode push button is provided in conjunction with sequence detection circuitry to generate various control signals to enable the programming of the tuning voltage circuitry and skip channel circuitry in response to the order and manner in which the mode, up and down Push buttons are operated.

PUSHBUTTON RADIOTUNER WITH ILLUMINATED PUSHBUTTON DISPLAY

PUSHBUTTON TUNER DISPLAY A pushbutton tuner display apparatus for an entertainment device is disclosed in which a plurality of pushbuttons are used to tune a radio apparatus in the entertainment device in one mode of operation, while in another mode of operation the entertainment device operates as a cartridge tape player in which the pushbuttons are utilized as display devices which indicate which tape track is being monitored by the cartridge tape player. Additionally, one pushbutton is utilized as a display to indicate the reception of a stereo radio signal. Each pushbutton comprises a clear plastic light pipe surrounded by an opaque plastic part having openings at the front and rear. An associated light bulb mounted inside the frame of the entertainment device is utilized to provide light to each rear portion of each light pipe, and each light pipe has a prismatic portion which transmits received light to a front portion of the light pipe where an illuminated operative state display ...

CHARACTER DISPLAY DEVICE

A low-noise character element display device is obtained by periodically gradually switching on and off of the display elements and by changing the information to be displayed at instants that the display elements are off.

CHANNEL INDICATOR DEVICE

A channel indicator device is disclosed in which a tuner for achieving station selection between VHF and UHF band television broadcastings is provided in association with a single channel selection shaft of the tuner, a switch for band selection is also provided in connection with the channel selection shaft, and an indicator in the type of a plural-unit indication is provided, the indicator having a numeral corresponding to a selected channel in response to the channel selection and a code corresponding to a selected one of the VHF and UHF bands. The indicator is provided with a pluralunit indication member consisting of a plurality of indication elements to form a numeral "8".

DIAL INDICATOR ARRANGEMENT FOR UHF TELEVISION TUNER

CODING ARRANGEMENT FOR FIBER OPTIC DIGITAL DISPLAY DEVICE

MULTI-LEVEL TELEVISION RECEIVER CHANNEL INDICIA DISPLAY

PHASE LOCKED LOOP TUNING SYSTEM WITH A PRESET CHANNEL MEMORY

PROGRAMMABLE FIBER OPTIC DISPLAY FOR USE IN TELEVISION TUNERS

POINTER AND SCALE INDICATING ASSEMBLY

ELECTRONIC TUNING RADIO RECEIVER

DEVICE FOR PRESETTING A TELEVISION PROGRAM AND THE LIKE

TUNING SYSTEM INCLUDING A MEMORY FOR STORING TUNING INFORMATION WITH USER CONTROLS ARRANGED TO FACILITATE ITS PROGRAMMING

ADJUSTABLE BRILLIANCE GAS DISPLAY SYSTEM

CONTROL PANEL FOR AIRCRAFT

A control unit is provided with a selector and a plurality of value indicators. One of the value indicators provides a coarse indication of an existing value of an adjustable control quantity. The other value indicators are in another state, distinguishable from the value indicating state. A rotary adjustor provides a manual adjustment facility for a user. Selection of the selector puts the adjustable control quantity in an adjustment mode. In this adjustment mode, rotary actuation of the rotary adjustor allows adjustment of the control quantity. A new value of the control quantity is indicated by a change in the display states of the value indicators.

Welleneinstellvorrichtung an Radioapparaten.

Dispositif pour repérer les réglages d'un poste récepteur de T. S. F.

Dispositif indicateur de réglage pour appareil de T. S. F.

Indikator zur bildlichen Darstellung der durch den Bandbreiteregler beeinflussten Selektivitätskurve bei Radio-Empfängern.

Skaleneinrichtung für kombinierte Radio-Drahtrundspruchempfänger.

Dispositif indicateur de réglage pour appareil de T. S. F.

Dispositif auxiliaire pour poste récepteur de radiophonie pour la lecture facile et simple des programmes des postes d'émission.

Abstimmvorrichtung für Radioapparate.

Dispositif indicateur d'accord pour radio-récepteur.

Einrichtung zum Einstellen der Eigenfrequenz von elektrischen Schwingungskreisen.

Anzeigeeinrichtung mit schwenkbarer Skala, insbesondere für Radiogeräte.

Einstellvorrichtung, insbesondere für elektrische Geräte und Anlagen.

Anzeigevorrichtung mit einer Skala und zugehörigem Zeiger an einem Gerät, insbesondere zur Verwendung als Wellenlängenanzeiger eines Radiogerätes.

Anzeigevorrichtung an einem Gerät, insbesondere an einem Rundfunkgerät, mit aufklappbarer Skala.

Stationsanzeigevorrichtung an Rundfunkempfängern.

Vorrichtung an einem Gerät, mittels der eine Anzeigeeinrichtung des Gerätes aus verschiedenen Richtungen beobachtet werden kann.

Mit einem Zeiger versehene Einstellvorrichtung, insbesondere für Radioempfänger.

Abstimmanordnung für Kurzwellen.

Dispositif indicateur à échelle rabattable, notamment pour récepteurs de T. S. F. et appareils analogues.

Einstellanzeigevorrichtung, deren Hauptskala mit Grob- und deren Zeiger mit Feineinteilung versehen ist.

Spiel- und parallaxenfreie Ablesevorrichtung der Drehkondensatorstellung an Radioapparaten.

Skala, längs der ein Zeiger bewegbar ist, insbesondere für Radiogeräte.

Elektrischer Apparat, insbesondere Radioempfänger, mit einer oben auf dem Apparat-kasten montierten, freistehenden Skalenplatte, längs der ein Zeiger bewegbar ist.

Récepteur pour ondes de radiodiffusion.

Dispositif indicateur à échelle rabattable pour appareil de T.S.F.

UKW-Teil aufweisende Skala für Radio-Apparate

Mécanisme de commande pour appareil récepteur de radiodiffusion.

Einstellskala für Hochfrequenz-Sende- oder Empfangsgeräte.

Radioempfangsgerät mit wenigstens zum grösseren Teil ausserhalb des Apparatekastens liegender aufklappbarer Abstimmskala.

Schalteinrichtung für die Skalenbeleuchtungslampe eines Allstrom-Rundfunkempfangsgerätes.

Anordnung zum Befestigen eines Zeigers an einem ihn bewegenden Zugseil, vornehmlich für Radiogeräte.

Dispositif indicateur d'accord pour poste récepteur radio-électrique à plusieurs gammes de longueurs d'ondes.

WIRELESS DEVICE AND METHOD OF DISPLAYING FREQUENCY

The wireless device includes: a frequency setting unit which sets a frequency; a first frequency display unit which displays the set frequency as a set-up frequency in numbers; and a second frequency display unit which draws at least one predetermined frequency range, centering the set-up frequency, on a scale having a fan shape by interlocking the at least one predetermined frequency range with the setting of the frequency performed by the frequency setting unit. Here, the scale is rotated about a virtual center point having the fan shape of the scale, and a center of the scale is shown to always correspond to the set-up frequency. 1. A wireless device comprising:a frequency setting unit which sets a frequency:a first frequency display unit which displays the set frequency as a set-up frequency in numbers: and a second frequency display unit which shows at least one predetermined frequency range in a graphical form, centering the set-up frequency, on a scale having a fan shape by interlocking the at least one predetermined frequency range with the setting of the frequency performed by the frequency setting unit.2. The wireless device of claim 1 , wherein the second frequency display unit shows scale marks in a graphical form at regular intervals corresponding to predetermined frequency intervals on the scale claim 1 , and shows numbers of a part of a frequency corresponding to the predetermined frequency range in a graphical form by deleting digits from an upper digit to a first predetermined digit and deleting digits from a lower digit to a second predetermined digit claim 1 , in the vicinity of a corresponding marking claim 1 , and such that a virtual center point of the scale having the fan shape is below characters of the numbers.3. The wireless device of claim 2 , wherein the second frequency display unit calculates displayed characters and character locations claim 2 , and markings and marking locations claim 2 , on the basis of frequency setting data of the ...

Switching display unit of electronic equipment

Channel selection unit

Pass band display device

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Tuning indicating circuit

내용 없음. No content.

Response device

Frequency indicating device of television receiver

내용 없음. No content.

Devices for locating the settings of t.s.f.

Illuminated touch operated control button - flat faced, bulb or tube form intended for printed circuit board fitting

Control button normally intended for use in groups as the the case of equipment switching and in particular television receiver switching, operated by touch and providing indication of their operation by becoming illuminated. The design aims to avoid cross illumination between buttoms and to simplify the mechanism. The button is in the form of a tube or bulb containing a filament. The front face is flat and carries on its surface a channel number or identification symbol. Four pins are brought out at the rear for mounting to a printed circuit board. The bulb or tube is sheathed by two half cylinders separated by a small clearance and are glued to it and provide fixing lugs on their lower edges.

TUNING DEVICE, ESPECIALLY FOR RADIO RECEIVER

L'INVENTION CONCERNE UN APPAREIL D'ACCORD DESTINE NOTAMMENT A UN RECEPTEUR DE RADIOPHONIE. L'APPAREIL COMPORTE UN CADRAN ET UNE AIGUILLE MOBILE MONTEE SUR UN SUPPORT MOBILE. DES MARQUEURS PEUVENT COULISSER SUR DES RAILS ET SON REGLABLES INDIVIDUELLEMENT DANS LES POSITIONS VOULUES. LE CIRCUIT D'ACCORD COMPORTE UNE BOUCLE A VERROUILLAGE DE PHASE DONT LA FREQUENCE EST COMMANDEE PAR DES SIGNAUX NUMERIQUES DETERMINES PAR LA POSITION DE L'AIGUILLE SUR LE CADRAN. UN CIRCUIT DE SILENCE BLOQUE LA SORTIE DU CIRCUIT D'ACCORD QUAND L'AIGUILLE N'EST PAS POSITIONNEE DEVANT UN MARQUEUR. L'INVENTION S'APPLIQUE NOTAMMENT AUX RECEPTEURS A HAUTE FIDELITE. THE INVENTION RELATES TO A TUNING APPARATUS INTENDED IN PARTICULAR FOR A RADIOPHONY RECEIVER. THE APPLIANCE CONTAINS A DIAL AND A MOBILE NEEDLE MOUNTED ON A MOBILE SUPPORT. MARKERS CAN SLIDE ON TRACKS AND SOUND ADJUSTABLE INDIVIDUALLY IN THE DESIRED POSITIONS. THE TUNING CIRCUIT CONTAINS A PHASE LOCKING LOOP THE FREQUENCY OF WHICH IS CONTROLLED BY DIGITAL SIGNALS DETERMINED BY THE POSITION OF THE NEEDLE ON THE DIAL. A SILENCE CIRCUIT BLOCKS THE OUTPUT OF THE TUNING CIRCUIT WHEN THE NEEDLE IS NOT POSITIONED IN FRONT OF A MARKER. THE INVENTION APPLIES IN PARTICULAR TO HIGH FIDELITY RECEIVERS.

Graduation device for radiotelephone reception devices

A method for introducing alphanumeric information, especially for operating traffic information.

a) Procédé pour introduire des informations alphanumériques, notamment pour exploiter des informations de circulation routière; b) caractérisé en ce qu'après avoir actionné une ou plusieurs touches occupées par des lettres, on recherche, dans la mémoire (71) de l'appareil électronique, la ou les combinaisons de lettres qui s'y trouvent et qui sont possibles et autorisées conformément à l'entrée par le clavier, et on enregistre, de façon intermédiaire, les combinaisons trouvées et après la fin de l'entrée, on met en mémoire et on affiche ou on indique par voix acoustique, les combinaisons de lettres, trouvées, autorisées pour la suite du traitement. a) Method for entering alphanumeric information, in particular for using road traffic information; b) characterized in that after having actuated one or more keys occupied by letters, one searches, in the memory (71) of the electronic device, the combination or combinations of letters which are there and which are possible and authorized according to the entry by the keyboard, and the combinations found are saved, in an intermediate way and after the end of the entry, we store and display or indicate by acoustic voice, the combinations of letters, found , authorized for further processing.

Response device

BROADCASTING RECEIVER, WITH TRANSMITTER FREQUENCY DISPLAY

Récepteur de radiodiffusion avec affichage de la fréquence de l'émetteur. Le récepteur comporte un syntoniseur ou << tuner >> électronique 1, 24, un dispositif 5, 7,; 6, 7, ou 7 de conversion de la fréquence de l'émetteur FM ou AM en un nombre, un affichage numérique 10 du nombre correspondant à la fréquence de l'émetteur et un dispositif 17, 18, 19 pour la recherche d'une fréquence sur laquelle il s'agit de régler le syntoniseur électronique 24. Application aux postes pour véhicules.

Patent FR2393466B1

Audible dial for radio receiver

Device to facilitate the adjustment of radio wave receiving stations

Patent FR2495405B1

DEVICE FOR SELECTING AND VISUALIZING ALPHANUMERIC IDENTIFICATION CHARACTERS OF TRANSMITTERS IN A BROADCASTING RECEIVER

Ce dispositif comprend un bouton d'accord 3 à crantage magnétique qui peut être transformé en un sélecteur rotatif par pression sur une touche électrique 8. En amenant le bouton sur une position angulaire donnée et en pressant la touche 8 on fait apparaître le signe alphanumérique ainsi sélectionné dans un segment d'affichage 5. Une autre touche 9 sert à décaler d'une case le signe alphanumérique ainsi mémorisé et affiché pour permettre la sélection du signe suivant. Une touche 10 charge dans une mémoire les signes affichés. Ensuite, chaque fois qu'on presse l'une des touches du clavier 11 de pré-sélection des stations, le symbole affecté à l'émetteur ainsi mémorisé et affiché apparaît sur le segment 5. Application aux réceptions de radio-diffusion à modulation de fréquence. (CF DESSIN DANS BOPI) This device comprises a tuning button 3 with magnetic detent which can be transformed into a rotary selector by pressing an electric button 8. By bringing the button to a given angular position and pressing button 8, the alphanumeric sign appears as well. selected in a display segment 5. Another key 9 is used to shift the alphanumeric sign thus stored and displayed by one box to allow selection of the next sign. A key 10 loads the displayed signs into a memory. Then, each time one of the keys of the keypad 11 for pre-selection of the stations is pressed, the symbol assigned to the transmitter thus memorized and displayed appears on segment 5. Application to radio broadcast receptions with modulation of frequency. (CF DRAWING IN BOPI)

Improvements to tracking devices

Wireless Inbox Enhancements

Orientation device for t frames. s. f.

Improvement brought to the receiving stations of t. s. f.

Patent FR2149069A5

TUNING DEVICE IN PARTICULAR INTENDED FOR A RECEIVER RECEIVING SEVERAL TRANSMITTER STATIONS

a. Dispositif d'accord destiné à un récepteur recevant plusieurs stations émettrices. b. Dispositif caractérisé par un manchon monté coulissant et à rotation sur l'arbre de guidage, ce manchon coopérant avec le moyen de montage et comportant une seconde partie de montage, un moyen d'accord coopérant avec le moyen de montage, l'aiguille de cadran et le manchon pour déplacer le moyen de montage, l'aiguille et le manchon le long de l'arbre de guidage en fonction du moyen d'accord, un moyen de commande pour faire tourner l'arbre de guidage et déplacer la seconde partie du manchon d'une première position éloignée de l'un des repères jusqu'à une seconde position coopérant avec la première partie de contact de l'un des repères de façon à placer ce repère dans une position prédéterminée le long de la plaque du cadran en fonction de la fréquence d'accord voulue, indiquée par la position du repère coopérant avec le manchon. at. Tuning device intended for a receiver receiving several transmitting stations. b. Device characterized by a sleeve mounted to slide and to rotate on the guide shaft, this sleeve cooperating with the mounting means and comprising a second mounting part, tuning means cooperating with the mounting means, the dial needle and the sleeve for moving the mounting means, the needle and the sleeve along the guide shaft according to the tuning means, control means for rotating the guide shaft and moving the second part of the sleeve from a first position remote from one of the marks to a second position cooperating with the first contact part of one of the marks so as to place this mark in a predetermined position along the plate of the dial in function of the desired tuning frequency, indicated by the position of the mark cooperating with the sleeve.

Visual adjustment system for wireless telephone receiver

Audible dial for radio receiver

Device for locating the setting of a t station. s. f. and other applications

TUNING DEVICE FOR A SET OF RECEIVER TUNING DEVICES

a. Appareil d'accord. b. Appareil caractérisé par un premier moyen de préréglage susceptible d'être placé en un point quelconque de l'échelle pour choisir une fréquence et coopérer avec un capteur lorsque le dispositif indicateur est dans la position indiquant la fréquence, un second moyen de préréglage du même type pour l'autre bande, un générateur de signaux de commande relié au capteur créant un signal lorsque le premier ou le second moyen de préréglage coopère avec le capteur ainsi qu'un circuit recevant le signal pour agir sur le fonctionnement des divers dispositifs d'accord. c. L'invention s'applique aux dispositifs d'accord automatique de postes de radio. at. Tuning device. b. Apparatus characterized by a first presetting means capable of being placed at any point on the scale to choose a frequency and cooperate with a sensor when the indicating device is in the position indicating the frequency, a second presetting means of the same type for the other band, a control signal generator connected to the sensor creating a signal when the first or the second presetting means cooperates with the sensor as well as a circuit receiving the signal to act on the operation of the various tuning devices . vs. The invention applies to devices for automatic tuning of radio sets.

METHOD FOR INTRODUCING ALPHANUMERIC INFORMATION, PARTICULARLY FOR EXPLOITING ROAD TRAFFIC INFORMATION.

Display circuit during constant tuning

Multi-level television receiver channel indicia display

ABSTRACT A channel member display device for a television receiver for displaying the numerals of the channel to which the receiver is tuned with the display being initially bright immediately after a channel change, and then after a predetermined time of several seconds, being reduced in bright-ness so as not to distract from the program material. Through the use of a thyrister, regardless of the number of individual elements in the numerical display, the brightness levels may be held to predetermined quantities.

Patent DE3200751C2

Indicator driving device for television receiver incorporating radio receiver

An improvement in the indicator driving device for use in a television receiver incorporating a radio receiver is shown. There is provided an indicator driving device of a type in which the selection of a channel for the television receiver and the selection of a frequency for the radio receiver are performed by means of a common manipulating knob. The improvement resides in a much simplified construction and facilitation of work for obtaining synchronization or matching between the frequency selecting variable capacitor of the radio receiver and the frequency indicator.

Improvements in or relating to indicating apparatus particularly for use in tuning of radio receiving apparatus

439,905. Adjusting wireless apparatus. KEMP, G. B., 33, Glendale Avenue, Edgware, Middlesex. Sept. 19, 1934, No. 26918. [Class 37] A station name-indicator for wireless receivers comprises a plate formed with transparent points, not on a straight line, and non-transparent lettering indicative of the names of stations, and a cursor having a luminous line, adapted to be moved behind the plate in accordance with the tuning of the set. In the form shown, the indicator comprises a semi-transparent plate, Fig. 1, marked with a horizontal wave-length scale a and with points b having station names appended thereto, and an opaque plate, Fig. 2, secured to the back of the first plate and formed with a horizontal slot c registering with the scale a, and with apertures d registering with the points b. The cursor is in the form of a box, Fig. 3, containing one or more sources of light e, the front wall of the box being formed with a vertical slot f. As the tuning member is adjusted, a spot of light travels along the scale a, and other spots appear and disappear at the points b as successive stations are tuned in. Two sources of light e may be provided for long and short wave reception, the appropriate source being switched in according to the position of the wave length switch. In this case, the names of the short wave stations are arranged above the scale and those of the long wave stations below it.

Digital counting arrangements

1509211 Reading electronic counters LICENTIA PATENT - VERWALTUNGS GmbH 24 June 1975 [23 July 1974] 26688/75 Heading G4D The first decimal digit in a BCD counter is rounded to 0 or 5 during readout by arranging that only one binary stage in the first decimal stage feeds the decoder and thus the display. In Fig. 1 the lowest order decimal stage comprises bi-stables 8-9; each of the other decades has a Johnson ring counter which can be converted by switching to a shift register for read out. The counter counts pulses for a period determined by a control 19 and gate 7 thereafter shift pulses are applied to feed the counter states to a decoder from where they are applied in succession to a display by a multiplexing arrangement (not shown). The first 20 shift pulses (5 per decade for Johnson code) feeds to states of the four stages 13-16 to the decoder. The remaining five pulses reads the output C of stage 9 five times to the decoder. If the state of stage 9 is zero a strain of five zeros will appear at the decoder and the display will show "0". If stage 9 is at one then the decoder receives five ones which is interpreted to display "5". Another arrangement is mentioned using the ordinary 1-2-4-8 code instead of Johnson code. The arrangement is designed to give maximum accuracy for the minimum number of connections to for instance an MOS integrated circuit.

Controlled tuning circuit for HF heterodyne receiver - has counter of local oscillator oscillations, whose reading is stored and evaluated

The receiver has an electronic counter (8) periodically counting oscillations of at least one local oscillator (6); the counter reading is displayed, and an input store (7) holds a value allocated to a transmitter. A comparator (9) compares the counter (8) reading with the store content, and an evaluation device evaluates the comparison result and delivers a tuning voltage. The counter (8) can be switched between determination of the reception frequency and the reception channel. A control circuit (14) controls, after each counter (8) switching from one type of operation to the other, the transfer of the new counting result to the store (7).

Channel number display device

In a channel number display device used with an automatic channel selecting system there is provided a means which generates signals representative of a plurality of predetermined channels each time a control signal is applied thereto, the control signal being generated by a means for automatically selecting channel from among the predetermined channels by sequentially scanning the channels in the order of the number of the channels.

Patent FR2391596B1

TUNING DEVICE FOR A TELEVISION RECEIVER

Improvements in dials

234,068. British Thomson-Houston Co., Ltd., (Assignees of Langley, R. H.). May 17, 1924, [Convention date]. Diads and scales; index hands and pointers; indicating particular readings.-Relates to dial and pointer devices for indicating a number of desired angular positions of a rotatable spindle. The invention is particularly adapted for use on wireless receiving apparatus, to provide a convenient means for noting the various positions in which condensers &c. should be set for tuning-in different stations. A number of pointers of different lengths are attached to the rotatable spindle, which is surrounded bv a dial having a number of circles concentric with the spindle; each circle has a radius equal to the length of one or more of the pointers, and any particular setting can be noted by marking the position of any one of the pointers on the corresponding circle or arc over which it moves. The Figure shows the application to a condenser in which the spindle can be rotated through 180‹ only. A paper &c. dial 4 is removably secured over the ordinary fixed dial 3, bv means of a resilient split ring 16 and a screwed-on ring 18. On the end of the spindle 14 is attached a four-armed pointer 5; the longer pair of arms 6, 8 may be equal, and extend to a circle 11, whilst the shorter arms 7, 9 may both be substantially equal to the radius of a circle 10. The upper half of the circle 11 may be graduated in degrees, as shown. When the set in which the apparatus is used is tuned to receive a particular station, the angular setting is recorded (together with the call-sign of the station) bv a mark on the dial opposite any one of the pointer arms. In the application to a receiver of the superheterodyne type, the aerial tuner is provided with a paper dial having an arbitrary scale and the dial for the oscillator tuning means is calibrated by experiment to correspond with the readings on the other dial.

Channel indicating apparatus

A channel selecting and indicating apparatus for a television receiver includes a plurality of channel selecting variable resistors and a cover for the channel selecting variable resistors and having a plurality of channel indicating windows. In the channel selecting and indicating apparatus, channel indicating tabs each indicating the number representing a selected channel are mounted onto the channel indicating windows from behind the cover after the channel selecting variable resistors are preset to desired channels respectively.

Compact speed reduction mechanism for a uhf indicator dial

A COMPACT SPEED REDUCTION MECHANISM FOR A UHF INDICATOR DIAL Abstract of the Disclosure A compact speed reduction mechanism for driving a tuning indicator dial of a UHF television tuner or the like includes a harmonic drive unit having a rigid fixed spline and a movable flexible spline member. The indicator dial is mechanically coupled to the flexible spline member and a wave generator is attached to the selector shaft. The number of teeth on each spline is selected to give approxi-mately a seven-to-one reduction ratio between the selector shaft and the indicator dial. More teeth are provided on the flexible spline than the rigid spline to prevent binding between the splines which normally occurs when reduction ratios of less than approximately twenty-to-one are used.

Method of inputting alphanumeric data

Proposed is a method of inputting alphanumeric data into an electronic device, the data being keyed in using an ordinary numeric keypad. A search is carried out in a memory for corresponding letter/number combinations, each number corresponding to a maximum of three letters, and the data found is displayed. The invention makes it possible to use a numeric keypad to key alphanumeric as well as numeric data into a device.

Channel display unit

Display system for facilitating the setup of a tuning system

Patent DE2856672C2

Tuning dial for radio receiving apparatus

471,733. Loud-speakers. DREYFUS, J. A. Dec. 6, 1935, Nos. 33922, 33923, 33924, 33925, and 33926. Convention dates, Jan. 16, March 16, April 25, May 22, and Aug. 27. Addition to 438,631, [Group XL]. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 8, 1936.] [Class 40 (iv)] [Also in Groups XL and XXXVI] In a receiver in which a sound-pervious tuning dial covers part or the whole of the loudspeaker opening as in the parent Specification, the dial consists of celluloid or similar plastic material, or of glass, provided with narrow sound-transmitting slits between which the tuning indicia are located ; alternatively, the dial may consist of fabric such as silk. In a modification the loudspeaker diaphragm may itself constitute the tuning dial. Figs. 1 and 2 show part of a receiver in which the tuning dial 27 of celluloid is mounted in the sound opening of the loudspeaker 19, the core 26 of which is drilled to form a bearing for the spindle 25 operated by the tuning spindle and carrying a pointer comprising three lamps 31, 32, 33 co-operating with concentric scales on the dial, the appropriate lamp being switched in for each waverange by the wave-change switch. The dial is generally illuminated from the rear by a lamp 29 and reflectors 30. The part of spindle 25 within the core 26 may be of chrome steel. The dial 27 may be covered by a veil 37 of fabric, rendering the dial invisible when the lamps 29, 31, 32, 33 are not alight. These lamps may be controlled by a switch actuated by push-pull movement of the tuning knob. A construction of celluloid dial is shown in Figs. 3 and 4. Long radial slits 57, 58 render the dial soundpervious and may be used as linear tuning indicia; other symbols such as figures or letters may be formed by other perforations. Such a dial tends to disperse the central pencil of sound rays characteristic of the higher audiofrequencies and the dial thus serves as a tone filter ; to this end also the central opening may be ...

Patent FR2262448B3

DISPLAY SYSTEM TO FACILITATE THE IMPLEMENTATION OF A TUNING SYSTEM

L'invention a pour objet un système d'affichage pour faciliter la mise en oeuvre d'un système d'accord. Dans un dispositif d'accord 20 d'un récepteur de télévision, une mémoire 112 emmagasine les signaux binaires représentatifs des tensions d'accord pour les différents canaux que peut sélectionner un utilisateur, avec visualisation numérique des positions d'accord. Des symboles sont affichés sur une unité d'affichage 120 par l'intermédiaire d'un multiplexeur pour distinguer les modes de fonctionnement suivants : fonctionnement normal, fonctionnement pour le réglage de la tension d'accord, et fonctionnement pour la sélection d'un canal. L'invention s'applique notamment aux récepteurs de télévision. The object of the invention is a display system to facilitate the implementation of a tuning system. In a tuning device 20 of a television receiver, a memory 112 stores the binary signals representative of the tuning voltages for the different channels that a user can select, with digital display of the tuning positions. Symbols are displayed on a display unit 120 through a multiplexer to distinguish the following operating modes: normal operation, operation for tuning voltage adjustment, and operation for channel selection. . The invention applies in particular to television receivers.

Electronic television tuner interface circuit

An electronic television tuning system includes a channel number selection integrated circuit chip interfaced with a channel computer integrated circuit chip by a plurality of data lines. The channel number selection chip, in response to the partial or complete entry of a channel number by the viewer, develops multiplexed digital codes on the data lines representing the channel number entry and, in certain circumstances, a predefined blanking code. A display apparatus, coupled to the data lines, provides an observable indication of the channel number entry, portions of the display being suitably blanked in response to the blanking code. Tuning information and raster blanking signals are developed by the channel computer chip directly from the information supplied on the data lines.

Digital frequency display circuit for radio receiver - has R-S flip=flop controlling counter that drives display

The digital frequency indicating circuit, for a ratio receiver, has a settable bistable flip flop (27) to control the count and sisplay cycle. The flip flop's output (Q) is connected to the zero-setting input (26) of a parallel-readout pulse counter (21) and produces a zero-setting signal when in the set state. The flipflop's set input (S) is connected via a differentiator (28) to the output of a gate (12). A second zero-settable counter (20) is used to subtract the IF signal; its count input (19) is connected to the output of the gate and its output (29) to the bistable flipflop's reset input (R).

Tuning apparatus

IMPROVEMENT IN MEDIA CHANNEL INDICATORS WITH REPLACABLE INDICATOR

Receiver tuning

Improvements in channel selectors for television receivers

937,812. Television receiver channel selector arrangements; adjusting radio tuning controls. FERGUSON RADIO CORPORATION Ltd. May 12, 1960, No. 16842/60. Class 40 (5). A channel selector for television receivers comprises a frequency tuner having an angularly movable member adjustable into a plurality of frequency setting positions, a spring-loaded indexing mechanism, release means for removing or reducing the spring loading of the indexing mechanism on the tuner member to permit angular movement of the latter, and a control element movable along a scale and coupled to the tuner member by cable drive means to effect angular movement of the tuner member into any selected one of its setting positions in response to movement of the control element along the scale. The channel selector comprises a back-plate 10, tuner unit 11, a channel control member 13 and spring-loaded indexing mechanism 15 together with a fine-tuning control 16. A release bar 35 together with levers 36, 38 are pivotally mounted to bracket 42 about a common axis passing through pivot pins 40, 41. Two springs 43 and 45 act on the release bar, the former forming a toggle with lever 38 and having a dead-centre position and the latter being located in an aperture in the back-plate and arranged to bias the release bar into its forward position when the spring toggle is urging the release bar towards its rear position. The indexing mechanism, Fig. 2, comprises lever 49 pivotally connected to bracket 50; one end of the lever carrying a roller 51 arranged to roll on cam ring 24 and the other end engaging within a slot in the rear end of a link 53 which is pivotally connected to the flange 48 of lever 38, Fig. 1. Thus forward and rearward movement of the release bar about its axis effects movement of the roller 51 towards and away from the edge of the cam-ring 24, respectively; the spring toggle reinforcing the action of spring 45 in urging the roller 51 towards the cam ring when the roller is engaged in a ...

Display unit for channel selection

Digital indicator to simplify setting of tuning systemastrojjki

Channel indicator mechanism for television receiver

Automatic tuning control circuit with a control loop for a high frequency superheterodyne receiver

Tuning display circuit

Response device

Display circuit of reception frequency of receiver

Channel number display device

Systems and methods for tuning a broadcast radio receiver with digital display

Systems and methods that employ receiver circuitry to provide frequency display signals to a digital display without the presence or use of any external timing reference. One or more properties of a controllable local oscillator of a receiver circuit may be heavily or extensively characterized by measuring the local oscillator frequency under a variety of temperature and process conditions, and minimum to maximum frequencies. Measured local oscillator characterization information may be stored in memory, and may be accessed and used during normal operation to control the controllable local oscillator to produce a desired oscillator frequency for tuning the receiver circuitry to a desired radio frequency and for producing digital frequency display signals that are representative of the tuned radio frequency.

Radio dial display device

Circuit arrangement for channel display in a television receiver

Receiver

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

INDICATOR DEVICE WITH PRE-POSSIBLE MODE OF POSSIBILITY

L'INVENTION CONCERNE UN DISPOSITIF INDICATEUR A MODE DE POSSIBILITE PREETABLIE. SELON L'INVENTION, ON PREVOIT UN CERTAIN NOMBRE D'ELEMENTS INDICATEURS 1, UN CIRCUIT D'ATTAQUE 2, 3, UN CIRCUIT PORTE 4 RELIE AU CIRCUIT D'ATTAQUE, UN GROUPE DE TOUCHES POUR UN FONCTIONNEMENT PREETABLI, ET UN CIRCUIT DE COMMANDE 8 INTERPOSE ENTRE LE GROUPE DE TOUCHES ET LE CIRCUIT PORTE POUR COMMANDER LE CIRCUIT D'ATTAQUE, LE CIRCUIT DE COMMANDE PRODUISANT DES SIGNAUX DE SORTIE EN REPONSE A DES SIGNAUX FOURNIS PAR LE GROUPE DE TOUCHES, LES SIGNAUX DE SORTIE ETANT APPLIQUES AU CIRCUIT PORTE POUR ALLUMER ET ETEINDRE LES ELEMENTS INDICATEURS. L'INVENTION S'APPLIQUE NOTAMMENT AUX RADIO-RECEPTEURS. THE INVENTION RELATES TO AN INDICATOR DEVICE WITH A PRE-ESTABLISHED POSSIBILITY MODE. ACCORDING TO THE INVENTION, A CERTAIN NUMBER OF INDICATOR ELEMENTS 1, AN ATTACK CIRCUIT 2, 3, A DOOR CIRCUIT 4 CONNECTED TO THE ATTACK CIRCUIT, A GROUP OF KEYS FOR PRE-ESTABLISHED OPERATION, AND A CONTROL CIRCUIT 8 INTERPOSED BETWEEN THE KEY GROUP AND THE DOOR CIRCUIT TO CONTROL THE ATTACK CIRCUIT, THE CONTROL CIRCUIT PRODUCING OUTPUT SIGNALS IN RESPONSE TO SIGNALS PROVIDED BY THE KEY GROUP, THE OUTPUT SIGNALS BEING APPLIED TO THE DOOR CIRCUIT FOR SWITCH ON AND OFF THE INDICATOR ELEMENTS. THE INVENTION APPLIES IN PARTICULAR TO RADIO-RECEIVERS.

CHANNEL DISPLAY DEVICE FOR A UHF TUNER

Control and indicator unit for radio and TV receivers - modifies waveband and line standard for receiving large number of channels

The control and indicator unit allows commands to be fed in and functions to be displayed as feedback. The unit comprises plug-in circuit boards and is itself a plug-in unit fitting into various holders in receivers, in order to change waveband, fixed station and/or line standard. The unit is flat and has touch-plate controls and illuminated areas as indicators. The unit is intended to allow receivers to accommodate a large number of e.g. television channels that will become available when satellite broadcasting begins in the near future.

Indicating device

Tuner for tv receiver

Indicator device

Patent JPS5637728B2

Improvements in or relating to dial indicators for radio instruments

240,983. Igranic Electric Co., Ltd., Curtis, A. H., and Dandridge, G. F. Sept. 1, 1924. Wireless tuning-apparatus, adjustment and indicating devices for.-A dial indicator for angularly adjustable radio instruments comprises a scale of angles adapted to be mounted to the adjustable part of the instrument and a cover to be mounted to the fixed part, for example a panel, so that it covers and protects the scale, the cover having an opening or window therein through which the scale is adapted to be read. The split brass bush 1, Fig. 1, is mounted on the instrument spindle and carries a plate 2 removably supporting a scale 3, relative movement between them being prevented by tongues on the scale engaging slots in the plate or by paper pins. A dished cover 4, fitting over the bush 1 is locked against rotary movement by projections 4<a> engaging recesses in the panel or parts carried thereby, and is provided with windows 9, 10 each having re-entrant pointers 11, 12, the pointer 11 indicating the adjustment and that 12 indicating a station callsign or wave-length which may be inscribed on the scale 3 when the instrument has been tuned to a particular station. An adjusting knob 6 is secured to the bush 1 and instrument spindle by a screw 7, and is separated from the cover 4 by a felt washer 8. In the form shown in Figs. 6 and 7. the cover 4 has only one window 9<a> and two pointers 11, 12, the latter being for the additional markings. The dial 3 is mounted directly on the bush 1, and the cover 4 is retained against angular movement by a fixing plate 15, having projections engaging recesses in the cover and being secured by the nut which secures the bearing bush of the spindle, the nut being screwed over the bush to clamp the plate 15 against the panel. The cover 4 may be of bakelite, or metal to avoid hand capacity effects. According to the Provisional Specification, the scale carrier consists of a disc having a central boss projecting from one side thereof and ...

Radio broadcast receivers

Digital display device for radio set channel - has oscillating circuit with quartz crystal for each channel to be indicated

The channel can be a transmission and/or reception channel, and a resonant circuit is used, oscillating at an n times (n = 1, 2, 3 ...) the transmission and/or reception frequency. At least one figures or letter display unit is provided. An oscillating quartz crystal of a corresponding frequency is coupled to the resonant circuit for each channel to be indicated. Each crystal is followed by a rectifier for its output signal, and by a DC amplifier connected to a coder which converts the rectified and amplified signal into to a code suitable for the display unit. The whole device is housed in a separate case outside the radio set.

Patent CH620067A5

Patent JPS523522B1

AM receiver on semi-conductor with internally generated oscillation signal representing if band pass filter center frequency deviation

A superheterodyne receiver has a receiver circuit formed into a single semiconductor chip comprising a pseudo band-pass filter employing components equivalent to those of an intermediate-frequency filter of the receiver circuit and an oscillation circuit employing the pseudo band-pass filter as a feedback path thereof. The oscillation circuit oscillates at a frequency equal in value to the center frequency of the intermediate-frequency filter. The semiconductor chip is further equipped with a PLL circuit allowing the frequency-division ratio of a variable frequency-divider circuit to be varied in order to control a reception frequency, and the oscillation frequency of the oscillation circuit is monitored. Data representing the reception frequency is derived from the monitored oscillation frequency and the value of the frequency-division ratio of the variable frequency-divider circuit, and then output to a display element to display the reception frequency.

Rf receiver channel display apparatus

내용 없음. No content.

Patent FR2277464B1

Channel indicia display device

TUNER TYPE RADIO RECEIVER

a. Récepteur radiophonique de type Tuner. b. Récepteur caractérisé en ce que le circuit d'accord comporte un composant de photodétection formé d'une source lumineuse et d'un photodétecteur, fixés à l'indicateur et séparés d'un intervalle, un moyen de préréglage, mobile le long de l'échelle du cadran pour indiquer une fréquence d'émission préréglée, et comportant un obturateur destiné à venir se placer dans l'intervalle du composant de photodétection, un generateur de signaux de commande étant relié au composant de photodétection pour créer un signal de commande en fonction de la position du moyen de préréglage, un moyen de commande recevant le signal de commande pour commander l'état d'accord de façon que l'appareil d'accord soit mis en oeuvre seulement lorsque l'obturateur se trouve dans l'intervalle du composant de photodétection, entre la source lumineuse et le photodétecteur. at. Tuner type radio receiver. b. Receiver characterized in that the tuning circuit comprises a photodetection component formed of a light source and a photodetector, fixed to the indicator and separated by an interval, a presetting means, movable along the scale of the dial to indicate a preset transmission frequency, and comprising a shutter intended to come to be placed in the interval of the photodetection component, a control signal generator being connected to the photodetection component to create a control signal according to of the position of the presetting means, control means receiving the control signal for controlling the state of tuning so that the tuning apparatus is operated only when the shutter is within the range of photodetection component, between the light source and the photodetector.

Patent DE1952214C3

Broadcast receiver tuning

Television channel indicator

TELEVISION CHANNEL INDICATOR Abstract of the Disclosure The specification discloses a channel indicator for a television set. The indicator has a thin film tape having channel numbers printed thereon, a sprocket drum for advancing the tape, a pair of reels to which both ends of the tape are fixed, respectively, a linkage for rotating the reels in response to the rotation of the sprocket drum, a housing for these elements having a window for indicating the channel number on the tape, a channel selector, the shaft of which has a tuner, the tuning frequency of which is controlled by revolving the shaft, a gear linked to the shaft and an adjustable engaging mechanism . The engaging mechanism includes a pair of engaging members both having radial notches on the engaging faces, and a spring which pushes the engaging members towards each other so that the radial notches are pressed to each other with a specified force, thereby engaging the pair of engaging members. The engaging mechanism rotatably links the gear and the sprocket drum. This invention enables the channel number to be indicated clearly and distinctly and without any gaps between the numbers of a two-digit figure.

Channel indicator for televisions

TUNING DEVICE FOR A RADIO RECEIVER

Audible dial for radio receiver

Ic circuit and receiver using the same

본 발명은 중간주파필터를 내장한 IC에 있어서, 수신주파수와 표시주파수와의 사이의 엇갈림을 없애는데 관한 것이다. The present invention relates to eliminating the gap between a reception frequency and a display frequency in an IC incorporating an intermediate frequency filter. 그 구성을 보면, 동일의 반도체 칩 위에, 수퍼헤테로다인 방식의 수신회로(12A~22)와, 그 중간주파필터(17)를 구성하는 소자의 동등의 소자(27)와, 이 소자(27)를 귀환로에 가지는 발진회로(25)를 형성한다. 발진회로(25)를 중간주파필터(17)의 중심주파수로 발진시킨다. PLL회로(30)와 수신주파수를 표시하는 표시소자(52)를 설치한다. PLL회로(30)의 가변분주회로(32)의 분주비를 변경하여 수신주파수를 제어한다. 발진회로(13)의 발진주파수를 검출하고, 이 검출출력과 가변분주회로(32)의 분주비를 나타내는 수치에서, 수신주파수를 나타내는 데이터를 얻는다. 이 데이터에 의해 표시소자(52)에 수신주파수를 표시하는 구성으로 되어 있다. According to the configuration, the same elements 27 of the superheterodyne receiving circuits 12A to 22, the elements constituting the intermediate frequency filter 17, and the elements 27 are formed on the same semiconductor chip. An oscillation circuit 25 having a return path is formed. The oscillation circuit 25 oscillates at the center frequency of the intermediate frequency filter 17. The PLL circuit 30 and the display element 52 which displays a reception frequency are provided. The frequency division ratio of the variable division circuit 32 of the PLL circuit 30 is changed to control the reception frequency. The oscillation frequency of the oscillation circuit 13 is detected, and data representing the reception frequency is obtained from a numerical value representing the detection output and the division ratio of the variable frequency division circuit 32. This data is configured to display the reception frequency on the display element 52.

Channel indicator

A channel indicator comprising a drum carrying thereon detachable numbered tabs for channel indication and a door of simple structure through which the drum is accessible and which has a window through which the numbers on the detachable tabs on the drum can be seen.

Programmable receiver tuning system matching channel numbers to tuning positions

Device for setting the stations on radio and television sets

Patent FR2278202B1

Means for indicating tones by color

Indicating device intended to be associated with the adjustment member of an apparatus, for example a radio-receiver

flat ladder for t apparatus. s. f.

TUNING DEVICE.