[특허]Adaptive error correcting transmission system

Adaptive error correcting transmission system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G06F-011/12
출원번호	US-0644804 (1975-12-29)
발명자 / 주소	Rydbeck Nils R. C. (Vildanden J101 22234 Lund SW) Sundberg Carl-Erik Wilhelm (Vildanden C506 22234 Lund SW)
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.

대표청구항 ▼

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 transmission properties are good; and switching over to a second source code protected by an error-protecting code with introduced redundancy in the digital symbols thereof for transmission of the information over the said channel in response to said control signal when the transmission properties are poorer; wherein said second source code has a number of quantization levels sufficiently smaller than that of the first source code such that the transmission speed is maintained after switching over from said first to said second source codes in spite of the introduced redundancy in the digital symbols transmitted over the said channel.

이 특허를 인용한 특허 (68)

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Padovani, Roberto; Bender, Paul E.; Black, Peter J.; Grob, Matthew S.; Hinderling, Jurg K.; Sindhushayana, Nagabhushana T.; Wheatley, III, Charles E., Method and apparatus for high rate packet data transmission.
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Padovani, Roberto; Bender, Paul E.; Black, Peter J.; Grob, Matthew S.; Hinderling, Jurg K.; Sindhushayana, Nagabhushana T.; Wheatley, III, Charles E., Method and apparatus for high rate packet data transmission.
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Padovani, Roberto; Bender, Paul E.; Black, Peter J.; Grob, Matthew S.; Hinderling, Jurg K.; Sindhushayana, Nagabhushana T.; Wheatley, III, Charles E., Method and apparatus for high rate packet data transmission.
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Padovani, Roberto; Bender, Paul E.; Black, Peter J.; Grob, Matthew S.; Hinderling, Jurg K.; Sindhushayana, Nagabhushana T.; Wheatley, III, Charles E., Method and apparatus for high rate packet data transmission.
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Padovani, Roberto; Bender, Paul E.; Black, Peter J.; Grob, Matthew S.; Hinderling, Jurg K.; Sindhushayana, Nagabhushana T.; Wheatley, III, Charles E., Method and apparatus for high rate packet data transmission.
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Padovani, Roberto; Bender, Paul E.; Black, Peter J.; Grob, Matthew S.; Hinderling, Jurg K.; Sindhushayana, Nagabhushana T.; Wheatley, III, Charles E., Method and apparatus for high rate packet data transmission.
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Padovani, Roberto; Bender, Paul E.; Black, Peter J.; Grob, Matthew S.; Hinderling, Jurg K.; Sindhushayana, Nagabhushana T.; Wheatley, III, Charles E., Method and apparatus for high rate packet data transmission.
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Padovani, Roberto; Bender, Paul E.; Black, Peter J.; Grob, Matthew S.; Hinderling, Jurg K.; Sindhushayana, Nagabhushana T.; Wheatley, III, Charles E., Method and apparatus for high rate packet data transmission.
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Padovani, Roberto; Bender, Paul E.; Black, Peter J.; Grob, Matthew S.; Hinderling, Jurg K.; Sindhushayana, Nagabhushana T.; Wheatley, III, Charles E., Method and apparatus for high rate packet data transmission.
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Padovani, Roberto; Bender, Paul E; Black, Peter J.; Grob, Matthew S.; Hinderling, Jurg K.; Sindhushayana, Nagabhushana T.; Wheatley, III, Charles E., Method and apparatus for high rate packet data transmission.
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Padovani,Roberto; Bender,Paul E.; Black,Peter J.; Grob,Matthew S.; Hinderling,Jurg K.; Sindhushayana,Nagabhushana T.; Wheatley, III,Charles E., Method and apparatus for high rate packet data transmission.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Adaptive error correcting transmission system 원문보기

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Adaptive error correcting transmission system 원문보기

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이 특허를 인용한 특허 (68)

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