[특허]Secondary channel for communication networks

[미국특허] Secondary channel for communication networks 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G06F-011/10
출원번호	US-0777780 (1996-12-31)
발명자 / 주소	Irvin David R. Khayrallah Ali S.
출원인 / 주소	Ericsson, Inc.
대리인 / 주소	Jenkens & Gilchrist, P.C.
인용정보	피인용 횟수 : 64 인용 특허 : 2

초록 ▼

A method and an apparatus are disclosed for combining information from two sources and for separating the combined information after transmission over one physical channel. A mask which represents a specified piece of information such as a control command or logic state of an input is exclusively ORed with an encoded input signal, thereby inducing a violation of an error control code. At the receiving end of the system, each of a set of masks is exclusively ORed with the received data stream. One of the masks is the same as the mask initially combined with the encoded input signal. Accordingly, once that mask is combined with the received data stream and so indicated by the favorable outcome of an error control code check, the original encoded input as well as the specified piece of information are recreated and produced.

대표청구항 ▼

[ What is claimed is:] [1.] A communication system for transmitting a plurality of logical channels over a single physical channel, comprising:an error protection encoder for generating at least one parity bits for attachment to a first data signal;a mask selector for generating a selected mask in response to signal at least one input second data signal, said selected mask representing data within the selected data;a logic circuit connected to receive an error protection encoded signal from said error protection encoder and connected to receive said selected mask from said mask selector, said logic circuit for combining the error protection encoded signal and the selected mask to produce a frame of data containing both the first and second data signals; andan error protection decoder coupled to receive said frame of data, said error protection decoder for producing a first and a second output signals, said first output signal being substantially similar to said first data signal received by said error protection encoder, and said second output signal representing said second data signal received by the mask selector.

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[미국특허] Secondary channel for communication networks 원문보기

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