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:
May. 02, 2017

Filed:

Feb. 12, 2014
Applicant:

Trigence Semiconductor, Inc., Tokyo, JP;

Inventors:

Akira Yasuda, Tokyo, JP;

Jun-ichi Okamura, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 3/00 (2006.01); H04R 1/00 (2006.01); H03M 7/14 (2006.01); H03M 7/16 (2006.01); H03F 3/217 (2006.01);
U.S. Cl.
CPC ...
H04R 3/00 (2013.01); H03F 3/217 (2013.01); H03M 7/14 (2013.01); H03M 7/165 (2013.01); H04R 1/005 (2013.01); H03K 2217/0045 (2013.01);
Abstract

As one embodiment a drive circuit is disclosed. When a three-value signal including a value representing zero is input, the drive circuit outputs two two-value signals that drive two drive elements such that the difference between values representing the two two-value signals corresponds to a value representing the input three-value signal. When the value of the input three-value signal represents zero, output signals are determined in accordance with the input history of the three-value signal. The drive circuit may also be provided with a memory that records a flag value that is reversed in accordance with the input history of the input three-value signal, and the combination of the output two two-value signals being determined in accordance with the flag.


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