Numerically controlled oscillator and method for operating...

Details Numerically controlled oscillator and method for operating... Numerically controlled oscillator and method for operating...

2006-08-22

2006-08-22

Young, Brian (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

Reexamination Certificate

active

07095349

ABSTRACT:
A numerically controlled oscillator (NCO) is defined to include counter circuitry and integrator circuitry. The counter circuitry includes a first input for receiving a minimum count value, a second input for receiving a maximum count value, and a third input for receiving an increment value. The counter circuitry is defined to generate a counter digital waveform that oscillates between the minimum count value and the maximum count value with a linear slope corresponding to the increment value. The integrator circuitry is defined to compute a running integral of the counter digital waveform. The running integral of the counter digital waveform represents a sinusoidal digital waveform output of the NCO.

REFERENCES:
patent: 5931891 (1999-08-01), Landry
patent: 6014682 (2000-01-01), Stephen et al.

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