Method and apparatus for hysteresis control

Details Method and apparatus for hysteresis control Method and apparatus for hysteresis control

2008-09-30

2008-09-30

Lee, John J. (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Plural receivers

C455S138000, C455S127200, C455S245100

Reexamination Certificate

active

11067705

ABSTRACT:
A hysteresis control method for a control system includes setting an arbitrary reference value for an existing position of a control width and calculating a difference between a present input value and the arbitrary reference value. A direction of increase/decrease from a control value and an input value variation width are calculated. A control value is calculated for the present input value time from the calculated input value variation width and the calculated direction of increase/decrease.

REFERENCES:
patent: 6330455 (2001-12-01), Ichihara
patent: 6539234 (2003-03-01), Hiramatsu et al.
patent: 7298703 (2007-11-01), Rose
patent: 2003/0216820 (2003-11-01), Messina
patent: 5-175763 (1993-07-01), None
patent: 8-115068 (1996-05-01), None
patent: 9-223946 (1997-08-01), None
patent: 2001-292079 (2001-10-01), None
patent: 2003-018027 (2003-01-01), None
English Language Abstract of JP 8-115068.
English Language Abstract of JP 9-223946.
English Language Abstract of JP 2001-292079.
English Language Abstract of JP 2003-018027.
English language Abstract of JP 5-175763.

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