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:
Mar. 13, 2012
Filed:
Feb. 13, 2008
Shinji Sakaguchi, Osaka, JP;
Shinji Sakaguchi, Osaka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A USB controller and a testing method of the USB controller are disclosed. The USB controller includes a sequence control unit for outputting a transmitting enable signal and a receiving enable signal, and for controlling a sequence of transmission and reception of data based on the transmitting enable signal and the receiving enable signal; a driver unit for transmitting data; a receiver unit for receiving data; a register for setting up a test mode wherein a loop-back test of the USB controller is performed; and a switching unit for providing one of the transmitting enable signal to the receiver unit and the receiving enable signal to the driver unit, if the test mode is set up in the register; wherein the loop-back test is performed if the test mode is set up in the register.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile