The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Feb. 01, 2011

Filed:

Mar. 13, 2007
Applicants:

Oliver D. Landolt, Menlo Park, CA (US);

Ken A. Nishimura, Fremont, CA (US);

Inventors:

Oliver D. Landolt, Menlo Park, CA (US);

Ken A. Nishimura, Fremont, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/36 (2006.01); G06G 7/20 (2006.01); G06G 7/22 (2006.01); G06F 7/556 (2006.01); H03K 5/22 (2006.01); H03K 5/153 (2006.01);
U.S. Cl.
CPC ...
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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