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:
Jan. 30, 2007
Filed:
Sep. 17, 2004
Hiroshi Saito, Saitama, JP;
Hiroyasu Nakano, Saitama, JP;
Hiroshi Saito, Saitama, JP;
Hiroyasu Nakano, Saitama, JP;
Sony Corporation, Tokyo, JP;
Abstract
To provide a digital amplifier advantageously performing volume adjustment over a wide range. A first and second field effect transistors include N-channel type field effect transistors. The first field effect transistor has the drain connected to the operation voltage Vreg, the source connected to the drain of the second field effect transistor and the gate to which the first input signal is applied from the first level shifter for on/off operation. The second field effect transistor has the source connected to the ground potential as the reference voltage and the gate to which the second input signal is applied from the second level shifter for on/off operation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile