Oscillator circuit and memory system

Details Oscillator circuit and memory system Oscillator circuit and memory system

2011-08-30

2011-08-30

Mis, David (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Afc with logic elements

C331S034000, C331S111000, C331S143000, C331S17700V, C331S186000

Reexamination Certificate

active

08008978

ABSTRACT:
An oscillator circuit generates a constant delay time by use of a current source and a load element to determine a frequency of a clock. The oscillator circuit includes an integrator which integrates the clock, a first comparator which compares an output voltage of the integrator with a reference voltage, and a variable current source which changes a current in accordance with the comparison result of the first comparator. The frequency is corrected in accordance with the current of the variable current source.

REFERENCES:
patent: 5491440 (1996-02-01), Uehara et al.
patent: 7456694 (2008-11-01), Wu
patent: 2001/0001543 (2001-05-01), Sasaki
patent: 2006-345405 (2006-12-01), None
patent: 2007-96410 (2007-04-01), None

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