发明名称 |
System for detecting a transmission error |
摘要 |
Inter-frame encoding/decoding equipment for television signals includes inter-frame encoding equipment generating an encoded signal by encoding a difference between television signals and the output of a frame memory and inter-frame decoding equipment which receives the encoded signal sent from the inter-frame encoding device via a transmission line. The decoding equipment decodes by adding its output of the frame memory to the encoded signal. The inter-frame encoding equipment is provided with a first operation circuit which calculates remainders obtained by dividing a predetermined value, into bit groups of the output or the input of the frame memory. The inter-frame decoding equipment is provided with a second operation circuit which calculates remainders obtained by dividing, the predetermined value, into the bit groups of the output or the input of its frame memory. The inter-frame decoding equipment is further provided with a comparator circuit which compares and checks the remainders calculated by the first and the second operation circuits to detect a transmission error.
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申请公布号 |
US4677480(A) |
申请公布日期 |
1987.06.30 |
申请号 |
US19840620516 |
申请日期 |
1984.06.14 |
申请人 |
NIPPON TELEGRAPH & TELEPHONE PUBLIC CORP.;FUJITSU LIMITED;NEC CORP. |
发明人 |
KURODA, HIDEO;MUKAWA, NAOKI;HIRAOKA, MAKOTO;MATSUDA, KIICHI;NISHIWAKI, MITSUO;TSUGANE, SHUZO |
分类号 |
H03M13/00;H04B14/06;H04L1/00;H04N7/32;(IPC1-7):H04N7/12 |
主分类号 |
H03M13/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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