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:
Sep. 16, 2014
Filed:
Sep. 12, 2013
Sony Corporation, Tokyo, JP;
Norifumi Kanagawa, Kanagawa, JP;
Yasuhide Shimizu, Fukuoka, JP;
Sony Corporation, Tokyo, JP;
Abstract
A D/A conversion circuit includes: current generation circuits each including a constant current source configured to generate a current, a first MOSFET connected to the constant current source and configured to control a supply destination of the current, a first gate control section configured to exclusively supply a first voltage and a second voltage to a gate of the first MOSFET, and a first discharge switch connected to the first gate control section and the gate of the first MOSFET, controlled to be turned on at the same time as the first gate control section supplies the second voltage and controlled to be turned off before the first gate control section supplies the first voltage; a first current addition line; a discharge line; a first resistor connected to the first current addition line; and a voltage source configured to supply the second voltage to the first gate control sections.