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:
May. 14, 2002
Filed:
Jan. 21, 1999
Qadeer Ahmad Qureshi, Round Rock, TX (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
An improved sleep state provides the benefits of low latency wake up for normal situations, but also provides the ability to wake up in the event that system memory is corrupted during the sleep state due to, e.g., a power failure during that sleep state. Before entering the sleep state, the software operating on the computer system saves system state information relating to the computer system into system memory. In addition, the computer system saves that state information and an image of system memory to non-volatile memory such as a disk drive. At that point power is removed from most of the computer system but power is maintained to the system memory. In response to a wake-up event, the computer system determines if the contents of the system memory has been corrupted. If the contents of the system memory is valid, the state information in the system memory is used to restore the computer system. If however, the contents of the system memory is not valid, the state information and system memory image saved in the non-volatile memory is used to restore the computer system.