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:
Jul. 02, 2002
Filed:
Jan. 24, 2000
Shoichi Yoshizaki, Sunnyvale, CA (US);
Matsushita Electrical Industrial Co., Ltd., Osaka, JP;
Abstract
Disclosed is an output driver for driving a universal serial bus. The driver includes a first pull-up circuit, a second pull-up circuit, and a crossover detection circuit. The driver uses the first pull-up circuit to drive the output up to first predetermined voltage. The crossover detection circuit detects the first predetermined voltage and switches to driving the output with the second pull-up circuit. The second pull-up circuit drives output up to a second predetermined target voltage. By driving the output up to only the target voltage using the second pull-up circuit, the likelihood of oscillations about the target voltage can be reduced.