Numerically controlled oscillator using quadrant replication and

Details Numerically controlled oscillator using quadrant replication and Numerically controlled oscillator using quadrant replication and

1982-06-28

1984-12-04

Smith, Jerry

Boots, shoes, and leggings

364721, 328 14, G06F 1532, H03B 1900

Patent

active

044868464

ABSTRACT:
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.

REFERENCES:
patent: 3898446 (1975-08-01), Vatz
patent: 4068178 (1978-01-01), Tunzi
patent: 4134072 (1979-01-01), Bolger
patent: 4159526 (1979-06-01), Mosley et al.
patent: 4159527 (1979-06-01), Yahata et al.
patent: 4172286 (1979-10-01), Wess
patent: 4342245 (1982-08-01), Gross
patent: 4346448 (1982-08-01), Insam et al.
patent: 4410955 (1983-10-01), Burke et al.

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