Digital sine-cosine generator
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United States of America Patent
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Nov 5, 1985
Grant Date -
N/A
app pub date -
Jan 3, 1983
filing date -
Jan 3, 1983
priority date (Note) -
Expired
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Abstract
A solid-state, digital logic, sine-cosine generator is provided for use in color television signal generators which contributes little or no phase shift or drift, whereby an input frequency of four times the color burst rate is used, and a first divide by two shift register operates upon that input signal frequency while a second divide by two shift register is used to obtain the proper color burst frequency as well as the 90.degree. relationship for the sine and cosine signals; a series of integrators then converts the digital 'square' waves to triangular and then sinusoidal signals.
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