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. 22, 2007
Filed:
Jan. 20, 2005
Xiaobao Wang, Cupertino, CA (US);
Tzung-chin Chang, San Jose, CA (US);
Chiakang Sung, Milipitas, CA (US);
Khai Q. Nguyen, San Jose, CA (US);
Xiaobao Wang, Cupertino, CA (US);
Tzung-Chin Chang, San Jose, CA (US);
Chiakang Sung, Milipitas, CA (US);
Khai Q. Nguyen, San Jose, CA (US);
Altera Corporation, San Jose, CA (US);
Abstract
Techniques are provided for controlling an on-chip termination resistance in an input or output (IO) buffer using calibration circuits. Each calibration circuit monitors the voltage between an external resistor and a group of on-chip transistors. When the effective resistance of the group of transistors matches the external resistance, the calibration circuit causes the effective resistance of drive transistors in the IO buffer to match the effective resistance of the group of on-chip transistors.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile