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:
Oct. 20, 2009
Filed:
May. 09, 2006
Wen-yu Tseng, Taipei, TW;
Yuan-zong Cheng, Taipei, TW;
Wen-Yu Tseng, Taipei, TW;
Yuan-Zong Cheng, Taipei, TW;
VIA Technologies, Inc., Taipei, TW;
Abstract
A PCI Express link state management system and method thereof is disclosed. The PCI Express link power state management system includes an upstream device, a downstream device and a link. First, the upstream device outputs a configuration request to the downstream device so as to change a device power state of the downstream device. At the time, the link is in a first link state. Next, the downstream device outputs a power entering signal to the upstream device. Following that, the upstream device outputs a power request acknowledging signal to the downstream device in response to the power entering signal and a time period is counting. Finally, the downstream device re-outputs the power entering signal if the link does not enter to an electrical idle state when the time period is expired.