System and method for improving the regulation of a supply volta

Details System and method for improving the regulation of a supply volta System and method for improving the regulation of a supply volta

1997-10-23

1999-06-01

Mis, David

Oscillators

Automatic frequency stabilization using a phase or frequency...

Particular frequency control means

331 8, 331 17, 331177R, 331185, 331186, 327156, 360 51, H03B 504, H03B 524, H03L 7099

Patent

active

059091509

ABSTRACT:
A system and method for regulating the voltage at an input node of a varying current demand circuit is provided. The input node may be a power supply node and the varying current demand circuit may be a controllable oscillator. In addition, a frequency synthesizer may be formed from a phase locked loop which includes the controllable oscillator and a voltage control circuit. The voltage control circuit may receive an input control signal that varies as the current demand of the controllable oscillator varies. In response to the input control signal, the voltage control circuit may provide a more stable voltage supply to the controllable oscillator even as the current demands of the oscillator vary widely. The input control signal may be generated by generating a signal from the loop path of the phase locked loop. The frequency synthesizer may be utilized in a data storage system data detection circuit, such as for example, a data detection circuit used for recovering data from an optical disk.

REFERENCES:
patent: 5075643 (1991-12-01), Einbinder
patent: 5097228 (1992-03-01), McJunkin
patent: 5485126 (1996-01-01), Gersbach et al.
patent: 5559476 (1996-09-01), Zhang et al.
patent: 5604466 (1997-02-01), Dreps et al.
patent: 5714912 (1998-02-01), Fiedler et al.

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