A/B-phase signal generator, RD converter and angle detection...

Details A/B-phase signal generator, RD converter and angle detection... A/B-phase signal generator, RD converter and angle detection...

2011-07-05

2011-07-05

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Clock or pulse waveform generating

C327S295000

Reexamination Certificate

active

07973583

ABSTRACT:
An A/B-phase signal generator wherein an up/down count unit52C counts up by an up-count command or counts down by a down-count command at fixed intervals, an angle comparison unit51compares the count result ACNT of up/down count unit52C with an input rotation angle θ and generates a count request, which is an up-count request or a down-count request, a count request comparison unit52B compares a previous count request with a next count request and generates an up-count command or a down-count command only when the previous count request and the next count request are both up-count requests or down-count requests, respectively, and an A/B-phase pulse generator53receives a least significant bit and a second least significant bit of up/down count unit52C and generates and outputs an A-phase pulse signal and a B-phase pulse signal.

REFERENCES:
patent: 5517689 (1996-05-01), Hayashihara
patent: 2001-317962 (2001-11-01), None

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