Improved audio distribution system
Номер патента: CA2077894C
Опубликовано: 30-01-1996
Автор(ы): Bill R. Unseld, Bruce B. Stevenson, Robert Farenelli, Shelton Rose
Принадлежит: Square D Co
Опубликовано: 30-01-1996
Автор(ы): Bill R. Unseld, Bruce B. Stevenson, Robert Farenelli, Shelton Rose
Принадлежит: Square D Co
Реферат: A signal distribution and communication ar-rangement (100) controls the broadcast of different types of signals through speakers located in various zones (A-D). The arrangement includes an audio re-ceiver circuit (102) which responds to a music signal from an external music source, and an associated threshold detection circuit which provides a music mute function. Further, a page interface circuit, re-sponds to a page signal generated from a telephone handset (126), which generates a paging control signal and serves as a power source to the telephone handset; and a doorbell interface circuit responds to any of a plurality of doorbell signal sources at differing loca-tions (106, 107, 108) by generating a doorbell control signal and activating a corresponding doorbell tone se-quence which identifies the location of the doorbell sig-nal source. Finally, a control circuit, responds to these various circuits by selecting which of the correspond-ing signals should be broadcast by the speakers (L, R).
Multi-zone audio distribution amplifier
Номер патента: US5255322A. Автор: Michael Morgan,Robert P. Farinelli,Shelton R. Rose. Владелец: Square D Co. Дата публикации: 1993-10-19.