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Video scrambling, audio masking and data transmission methods for wireless cable systems 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04N-007/167
출원번호 US-0519856 (1990-05-07)
발명자 / 주소
  • Bevins
  • Jr George L. (3524 Godwin Blvd. Suffolk VA 23434) Griffin Patrick G. (2424 Locks Landing Chesapeake VA 23323) Kendall Phillip K. (710 Summers Pl. Portsmith VA 23702) Hayes John J. (1013 Kinc
인용정보 피인용 횟수 : 50  인용 특허 : 0

초록

Video scrambling is accomplished by attenuating the video carrier during the horizontal blanking interval and/or by omitting horizontal sync pulses, vertical serration pulses and equalizing pulses. The method of scrambling can be dynamically changed, but this is done only at the change of scenes. Au

대표청구항

In a television system of the type including a modulator receiving input signals from a video source and an audio source and providing a video intermediate frequency video modulating signal and an audio intermediate frequency modulating signal to a transmitter, said transmitter being responsive to s

이 특허를 인용한 특허 (50)

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