发明名称 |
Numerically controlled oscillator using quadrant replication and function decomposition |
摘要 |
A numerically controlled oscillator wherein only one quadrant of a sinusoidially shaped wave is stored in a read-only-memory and the address of the read-only-memory is generated so that the entire numerically controlled oscillator and the read-only memory are contained on a single semiconductor chip. The data required to reproduce the quadrant is stored in a decomposed format so as to reduce the size of the read-only-memory.
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申请公布号 |
US4486846(A) |
申请公布日期 |
1984.12.04 |
申请号 |
US19820392852 |
申请日期 |
1982.06.28 |
申请人 |
MOTOROLA, INC. |
发明人 |
MCCALLISTER, RONALD D.;SHEARER, III, DANIEL |
分类号 |
G06F1/035;(IPC1-7):G06F15/32;H03B19/00 |
主分类号 |
G06F1/035 |
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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