Differential drive circuit and method for generating an a.c....

Details Differential drive circuit and method for generating an a.c.... Differential drive circuit and method for generating an a.c....

2007-04-24

2007-04-24

Lefkowitz, Sumati (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S087000, C327S090000, C327S347000

Reexamination Certificate

active

10000998

ABSTRACT:
The differential drive circuit generates a differential drive signal having a root mean square value defined by a digital input value. The differential drive signal includes a first differential component and a second differential component. The circuit comprises a first differential component generator and a second differential component generator. The first differential component generator is for counting the clock signal to generate successive values of a periodic count. Each of the values includes a most-significant bit. The first differential component generator is additionally for generating the first differential component in response to successive ones of the most-significant bit of the count. The second differential component generator is for generating the second differential component in response to the digital input value and the successive values of the count.

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patent: 4908613 (1990-03-01), Green
patent: 5239293 (1993-08-01), Barbier
patent: 5977940 (1999-11-01), Akiyama et al.
patent: 6023256 (2000-02-01), Ng et al.
patent: 2 473 767 (1981-07-01), None

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