KR930007273A - Scrambled and descrambled methods and devices - Google Patents

Scrambled and descrambled methods and devices Download PDF

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Publication number
KR930007273A
KR930007273A KR1019910016115A KR910016115A KR930007273A KR 930007273 A KR930007273 A KR 930007273A KR 1019910016115 A KR1019910016115 A KR 1019910016115A KR 910016115 A KR910016115 A KR 910016115A KR 930007273 A KR930007273 A KR 930007273A
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South Korea
Prior art keywords
signal
channel
signals
units
scrambled
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KR1019910016115A
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Korean (ko)
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김시중
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이헌조
주식회사 금성사
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Priority to KR1019910016115A priority Critical patent/KR930007273A/en
Publication of KR930007273A publication Critical patent/KR930007273A/en

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Abstract

본 발명의 오디오신호 또는 비디오 신호의 도청을 방지하기 위한 스크램블 및 디??램블 방식과 그 장치에 관한 것으로 종래의 스크램블 및 디스크램블 방식과 장치에서는 원래의 신호를 시간 압축하고 3.8msec의 여유 시간내에 임의의 음성신호를 부가하여 전송하는 1채널 스크램블 방식이므로 다수의 채널을 한 시스템에서 스크램블 및 디스크램블 할 수 없고 3.8mec동안 불요한 데이타를 전송하고 또 수신측에서 이를 제거해야 되기 때문에 비효율적인 문제점을 해결하기 위한 것이다.The present invention relates to a scramble and descramble method and apparatus for preventing eavesdropping of an audio signal or a video signal of the present invention. In the conventional scramble and descramble method and a device, the original signal is time-compressed and within a 3.8 msec. Since it is a one-channel scramble method that adds and transmits an arbitrary voice signal, many channels cannot be scrambled and descrambled in one system, and unnecessary data must be transmitted for 3.8 mec and the receiver must remove it. It is to solve.

본 발명은 다수의 채널에 배분되는 각각의 스크램블할 신호를 선택적으로 소정시간 단위로 분할 및 압축하여 전송하고 수신축에서는 역과정을 통해 임의의 채널을 선택하여 정상적인 신호로 환원시키므로써 데이타 손실없이 효율적인 스크램블이 가능하고 다 채널의 신호를 한 시스템내에서 스크램블 미 디스크램블 할수 있도록 한 것으로 오디오 또는 비디오 신호를 스크램블하는 시스템에 채용한다.The present invention efficiently divides and compresses each signal to be scrambled to a plurality of channels by a predetermined time unit, and transmits them. The receiver selects an arbitrary channel through a reverse process and reduces the signal to a normal signal. It is possible to scramble and multi-scramble signals in one system, so it can be scrambled. It is adopted in the system that scrambles audio or video signals.

Description

스크램블 및 디스크램블 방식과 장치Scrambled and descrambled methods and devices

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제 3도는 본 발명의 스크램블 방식에 따른 스크램블 장치의 블로구성도.3 is a block diagram of a scramble device according to the scramble method of the present invention.

제 4도의 (가) 내지 (자)는 본 발명의 스크램블 과정을 나타낸 신호 타이밍도.4 is a signal timing diagram illustrating a scramble process of the present invention.

제5도는 본 발명의 디스크램블 방식에 따른 디스크램블 장치의 블록구성도.5 is a block diagram of a descramble device according to the descramble method of the present invention.

Claims (4)

스크램블할 N개 채널의 신호를 소정시간(T)단위로 분할하여 각 채널의 신호를 T/N시간 단위로 압축하고 T/N로 압축된 신호를 시간적으로 반전시킨후 압축 및 반전된 N개 채널의 신호를 동일한 주기(T)내에 배열시켜 스크램블된 신호로 전송함을 특징으로 하는 스크램블 방식.N-channel signals to be scrambled are divided by a predetermined time (T) unit, and the signals of each channel are compressed by T / N time unit, and the T / N-compressed signal is temporally inverted, and then the N-channel channel is compressed and inverted. The scramble method, characterized by arranging the signals in the same period (T) and transmitting the scrambled signal. 디스크램블할 N개 채널의 신호를 소정시간(T)단위로 분할하여 각 채널의 신호를 T/N단위로 추출하고 T/N단위로 추출된 소정 채널의 신호를 T/N×N배의 시간으로 복원시킨후 시간적으로 반전시켜 원래의 신호로 환원시킴을 특징으로 하는 디스크램블 방식.By dividing the signals of N channels to be descrambled by a predetermined time (T), the signals of each channel are extracted in T / N units, and the signals of the predetermined channels extracted in T / N units are T / N × N times the time. The descrambling method of restoring the signal and inverting it in time to reduce the original signal. N개의 각 채널별로 스크램블할 신호를 디지탈 신호로 변환하는 A/D변환기(8,9,10,11)와, 디지탈 변환된 신호를 소정주기(T)단위로 각각 분할하여 저장하는 제1기억수단(12,13,14,15)과, 상기 제1기억수단(12,13,14,15)의 출력신호를 각각 T단위로 동시 스위칭하여 분할하는 제1스위칭 수단(16)과, 스위칭된 신호를 T단위로 라이트하고 각각의 채널별로 T/N시간 단위로 리드하여 압축 및 반전시키는 제2기억수단(17,17′,18,18′,19,19′,20,20′)과, 상기 제2기억수단(17,17′,18,18′,19,19′,20,20′)의 각 채널별로 압축 및 반전된 출력신호를 동일한 주기(T)내에 채널 단위로 차례로 배열시키는 제 2스위칭수단(21)과, 상기 제 2스위칭수단(21)의 출력 신호를 아날로그 신호로 변환하는 D/A변환기(22)를 구비하여 구성됨 스크램블 장치.A / D converters 8, 9, 10, and 11 for converting signals to be scrambled into N channels into digital signals, and first storage means for dividing and storing the digitally converted signals in units of predetermined periods (T). (12, 13, 14, 15), first switching means (16) for simultaneously switching and dividing the output signals of the first storage means (12, 13, 14, 15) by T units, and the switched signals Is stored in units of T, reads in units of T / N time, and is compressed and inverted by second storage means (17, 17 ', 18, 18', 19, 19 ', 20, 20'), A second to sequentially arrange the compressed and inverted output signals for each channel of the second storage means 17, 17 ', 18, 18', 19, 19 ', 20, and 20' in the same period T in the unit of channel; And a switching means (21) and a D / A converter (22) for converting the output signal of the second switching means (21) into an analog signal. 스크램블된 채널의 아날로그 오디오 신호를 디지탈 신호로 변환하는 A/D변환기(23)와, 디지탈 변환된 오디오 신호를 소정시간(T)단위로 분할하여 N개 채널로 이루어진 1T주기의 오디오 신호군을 추출하는 분할수단(24)과, T단위로 분할된 신호를 각 채널별로 T/X단위로 분할하여 T내에서 제 N채널의 신호를 추출하는 채널추출수단(25)과, 추출된 제 N채널의 신호를 T/N×N배의 시간으로 복원하고 시간적으로 반전시키는 복원/반전수단(26)과, 복원 및 반전된 오디오 신호를 아날로그 신호로 변환하는 D/A변환기(27)를 구비하여 구성된 디스크램블 장치.A / D converter 23 for converting the analog audio signal of the scrambled channel into a digital signal, and dividing the digitally converted audio signal in units of a predetermined time (T) to extract a 1T period audio signal group consisting of N channels And a channel extraction means (25) for dividing the signal divided into T units into T / X units for each channel to extract the signal of the Nth channel within T, and the extracted Nth channel of A decompression / reversal means 26 for restoring and temporally inverting the signal to a time T / N × N times, and a D / A converter 27 for converting the restored and inverted audio signal into an analog signal. Scramble device. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910016115A 1991-09-16 1991-09-16 Scrambled and descrambled methods and devices KR930007273A (en)

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