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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 8. Отображено 8.
13-05-2009 дата публикации

DES encrypted circuit and method thereof and its hardware circuit implementing method

Номер: CN0101431405A
Автор: HUANG JUNKAI, ZHANG QI, PAN WENMING, ZHENG GUANDONG, JUNKAI HUANG, QI ZHANG, WENMING PAN, GUANDONG ZHENG
Принадлежит:

The present invention discloses a DES encryption circuit and the method thereof, and the realizing method of its hardware circuit. Replacing line connection with shift register to realize initial permutation and inverse initial permutation conveniently; optimizing encryption circuit area and speed by using two stage cycle and two-stage pipeline structure; designing in the way of line connection in the extension/permutation and P permutation in cycle structure for further reducing chip area. The hardware circuit is more suitable to be industrialized in common encryption situation than other DES hardware encryption circuit at present.

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Номер записи: 1
31-12-2014 дата публикации

Multimedia data processing method, circuit and device

Номер: CN104253993A
Автор: ZHENG GUANDONG
Принадлежит:

The invention discloses a multimedia data processing method, circuit and device. The method includes establishing a coordinate system corresponding to a Huffman code table; according to the coordinate system, acquiring a coding parameter set corresponding to the Huffman code table; receiving input multimedia data, and acquiring coding parameters corresponding to the multimedia data from the coding parameter set; according the coding parameters, acquiring Huffman codes corresponding to the multimedia data, and taking the Huffman codes as coded data corresponding to the multimedia data. The coordinate system corresponding to the Huffman code table is reestablished, the Huffman codes in the Huffman code table are grouped, corresponding data are distributed for the coding parameters corresponding to each group of the Huffman codes, the Huffman codes after coding can be acquired by only inquiring the coding parameters corresponding to the multimedia data, and an address does not need to be distributed ...

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Номер записи: 2
12-01-2011 дата публикации

Decoding method and decoder for infrared remote control

Номер: CN0101944287A
Автор: ZHENG GUANDONG, GUANDONG ZHENG
Принадлежит:

The invention discloses a decoding method for infrared remote control, which comprises the following steps: receiving a code signal of infrared remote control; at the preset jump time point, carrying out jump operation on the value of an identifier according to the level state of the code signal, wherein when the value of the identifier is 0 or 1, the jump operation is to change the value of the identifier from 0 to 1, or from 1 to 0; and sampling the value of the identifier at the preset sampling time point in the jump process, and outputting the sampling result as the decoding result. The invention also discloses a decoder for infrared remote control. The scheme can be used for four codes which are common for infrared remote control.

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Номер записи: 3
14-09-2011 дата публикации

DES encrypted method and its hardware circuit implementing method

Номер: CN0101431405B
Автор: ZHANG QI, PAN WENMING, ZHENG GUANDONG, HUANG JUNKAI, QI ZHANG, WENMING PAN, GUANDONG ZHENG, JUNKAI HUANG
Принадлежит:

The present invention discloses a DES encryption method, and the realizing method of its hardware circuit. Replacing line connection with shift register to realize initial permutation and inverse initial permutation conveniently; optimizing encryption circuit area and speed by using two stage cycle and two-stage pipeline structure; designing in the way of line connection in the extension/permutation and P permutation in cycle structure for further reducing chip area. The hardware circuit is more suitable to be industrialized in common encryption situation than other DES hardware encryption circuit at present.

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Номер записи: 4
30-05-2023 дата публикации

Over-the-air touch system with high anti-interference capability

Номер: CN116185236A
Автор: ZOU MINHAN, ZHENG GUANDONG, CHEN LIN
Принадлежит:

The invention aims to provide the air touch system with the high anti-interference capability, which is simple in circuit, low in cost and power consumption and capable of accurately identifying touch operation. The device comprises a capacitor charge collector, a voltage comparator, a spread spectrum module, a constant current source module and a touch control identification module, the capacitor charge collector and the constant current source module are both in electric signal connection with the spread spectrum module, and the output end of the spread spectrum module is connected with the input end of the voltage comparator. And the output end of the voltage comparator is connected with the input end of the touch identification module. The method is applied to the technical field of touch systems.

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Номер записи: 5
24-12-2014 дата публикации

Multimedia data acquisition method and device

Номер: CN104240747A
Автор: ZHENG GUANDONG
Принадлежит:

The invention discloses a multimedia data acquisition method and device. The method includes the steps: a currently used Huffman code table is re-encoded into a binary tree code table, decoding results corresponding to Huffman codes of all corresponding end nodes in the binary tree code table are successively stored, and node type codes of the code lengths of all the Huffman codes in the binary tree code table are successively stored; when one to-be-decoded data is received, the currently received to-be-decoded data and previously received to-be-decoded data are merged to be used as a current Huffman code; and according to the position offset of a node type value corresponding to a highest order of the current Huffman code in a specified node type code, a decoding result memory address of the current Huffman code is acquired by adopting an iteration way, a decoding result is read from the decoding result memory address, the decoding result of the current Huffman code as an acquired multimedia ...

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Номер записи: 6
15-04-2009 дата публикации

Method and apparatus for determining audio data sampling point position

Номер: CN0101409093A
Автор: ZHENG GUANDONG, GUANDONG ZHENG
Принадлежит:

The invention discloses a method and a device for determining the position of an audio data sampling point. The method comprises the following steps: jump edge detection is carried out to synchronous frame head B pulse; counting is carried out according to a system clock of a receiving end; corresponding count values in the interval of every two cocurrent adjacent jump edges of the synchronous frame B pulse are determined; whether the synchronous frame B pulse is correct or not; if so, a count value that is corresponding to the pulse width of a clock of a sending end is determined, according to the count value corresponding to the pulse width of the clock of the sending end, a time that is corresponding to half of the count value is determined, and the corresponding time is determined as the position of the audio data sampling point; if not, a data block which the B pulse belongs to is discarded. The adoption of the method and the device provided by the invention solves the problems of ...

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Номер записи: 7
15-06-2011 дата публикации

Method and apparatus for determining audio data sampling point position

Номер: CN0101409093B
Автор: ZHENG GUANDONG, GUANDONG ZHENG
Принадлежит:

The invention discloses a method and a device for determining the position of an audio data sampling point. The method comprises the following steps: jump edge detection is carried out to synchronous frame head B pulse; counting is carried out according to a system clock of a receiving end; corresponding count values in the interval of every two cocurrent adjacent jump edges of the synchronous frame B pulse are determined; whether the synchronous frame B pulse is correct or not; if so, a count value that is corresponding to the pulse width of a clock of a sending end is determined, according to the count value corresponding to the pulse width of the clock of the sending end, a time that is corresponding to half of the count value is determined, and the corresponding time is determined as the position of the audio data sampling point; if not, a data block which the B pulse belongs to is discarded. The adoption of the method and the device provided by the invention solves the problems of ...

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Номер записи: 8