发明名称 |
UN CONJUNTO DE CIRCUITOS GENERADORES DE UN FACTOR DE FUNCIONDE AUTOCORRELACION. |
摘要 |
<p>For a delta modulated signal wave comprising a digital carrier wave modulated by an analog wave and represented accordingly as a bivalued digital data bit stream, a correlation function factor is generated by delaying the bit stream in time by an integral multiple of bits and accumulating the successive individual products over a predetermined number of bits of successive individual bits delayed in time and the corresponding currently appearing bits. The circuitry is extremely simple; readily procurable components only are required. A dual input exclusive OR (XOR) gating circuit is connected to the source of delta modulated signal bit stream and to an N-bit digital binary shift register also connected to the source. A stream of successive bivalued products of the current bits and the time delayed bits over a period of N-bits is obtained from the XOR gating circuit and applied to a bidirectional digital counting circuit from which an autocorrelation function factor is delivered.</p> |
申请公布号 |
ES461223(A1) |
申请公布日期 |
1978.05.01 |
申请号 |
ES19230004612 |
申请日期 |
1977.08.01 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
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分类号 |
G06F17/15;(IPC1-7):H03C/;H03K/ |
主分类号 |
G06F17/15 |
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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