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.
Patent No.:
Date of Patent:
Oct. 11, 2011
Filed:
Jul. 29, 2009
Applicants:
Masatsugu Onizuka, Kanagawa, JP;
Masaru Kikuchi, Kanagawa, JP;
Inventors:
Masatsugu Onizuka, Kanagawa, JP;
Masaru Kikuchi, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/62 (2006.01); H03M 1/84 (2006.01);
U.S. Cl.
CPC ...
Abstract
A digital-analog converter circuit includes: a first digital-analog conversion part that obtains an analog output signal in response to a value of a digital input signal; and a second digital-analog conversion part that generates a control signal in response to a value of a digital gain control input signal externally input, wherein the first digital-analog conversion part adjusts a start voltage or end voltage of the analog output signal based on the digital gain control input signal for controlling the second digital-analog conversion part.