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특허 상세정보

Adaptive error correcting transmission system

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G06F-011/12   
미국특허분류(USC) 340/1461 ; AX ; 325/41
출원번호 US-0644804 (1975-12-29)
발명자 / 주소
인용정보 피인용 횟수 : 68  인용 특허 : 0
초록

A method for effecting error protecting coding in digitally modulated analog information as a function of the quality of transmission characteristics in the communication channel is provided in which the error code is embodied in the source code word, such as by reducing the number of significant bits and substituting error protecting code bits. This results in the maintenance of transmission capacity while providing the space needed for the redundant signals required to preclude error.

대표
청구항

An improved method for adapting transmission of analog information by digital modulation methods over a channel to variations in the transmission properties of the channel, the method including the steps of: producing at least one control signal containing information indicative of the transmission properties of the channel; using a first source code without introduced redundancy in the digital symbols thereof and with a first number of quantization levels in response to a said control signal for transmission of the information over the channel when the ...

이 특허를 인용한 특허 피인용횟수: 68

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