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. 10, 2012
Filed:
Aug. 19, 2009
Gopal Santhanam, Sunnyvale, CA (US);
Kumaran Santhanam, Sunnyvale, CA (US);
Etai Bruhis, Palo Alto, CA (US);
Gopal Santhanam, Sunnyvale, CA (US);
Kumaran Santhanam, Sunnyvale, CA (US);
Etai Bruhis, Palo Alto, CA (US);
Total Phase, Inc., Sunnyvale, CA (US);
Abstract
The Universal Serial Bus ('USB') 2.0 Specification defines three speeds of communication for its bus, and each has its own signaling characteristics. Due to the uniqueness of each speed, PHYs must be placed in a separate mode for each signaling rate. Although USB devices may know its communication speed, a general purpose USB analyzer must be able to analyze all USB communications. Rather than force the user to manually set the operating mode of the analyzer, this invention describes circuits for automatically and reliably determining the monitored USB communication speed.