Digital locked loop

Details Digital locked loop Digital locked loop

1996-04-29

1998-04-28

Wysocki, Jonathan

Electricity: motive power systems

Positional servo systems

'reset' systems

318439, H02P 700

Patent

active

057449287

ABSTRACT:
A digital locked loop uses feedback to maintain an output digital signal in a specific digital relationship with a reference digital signal. The digital locked loop can lock an input digital signal according to a reference digital signal by using a digital counter, a resister and an arithmetic logic circuit instead of a phase locked loop and a frequency locked loop in motor drive integrated circuit for permanent magnetic brushless DC multi-phase motor drive applications. The circuit is designed not to use a voltage-controlled oscillator VCO and can be extended to broader applications such as digital data communications, digital image processing, and in the multi-media industry.

REFERENCES:
patent: 4412163 (1983-10-01), Angersbach et al.
patent: 4707650 (1987-11-01), Bose
patent: 5034668 (1991-07-01), Bausch
patent: 5379223 (1995-01-01), Asplund
patent: 5465381 (1995-11-01), Schmidt et al.
patent: 5477103 (1995-12-01), Romano et al.

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