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:
Aug. 27, 2002
Filed:
Nov. 28, 2000
Raymond C. Pang, San Jose, CA (US);
Venu M. Kondapalli, Sunnyvale, CA (US);
Jane W. Sowards, Fremont, CA (US);
Scott O. Frake, Cupertino, CA (US);
Jennifer Wong, Fremont, CA (US);
F. Erich Goetting, Cupertino, CA (US);
Peter H. Alfke, Los Altos Hills, CA (US);
Schuyler E. Shimanek, Albuquerque, NM (US);
Xilinx, Inc., San Jose, CA (US);
Abstract
A PLD can be manufactured to include power supply lines from two sources so that a portion of the PLD can be backed up with a battery when power to the PLD is removed. A switch that supplies power to the backed up portion of the PLD receives power from both an external power supply and from the battery, and detects voltage level of the external power supply, switching to battery power when voltage from the external power supply is not sufficient.