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:
Nov. 27, 2001
Filed:
Jan. 15, 1999
Nathaniel Henderson, San Jose, CA (US);
David Brown, San Jose, CA (US);
Lai-Chin Lo, San Jose, CA (US);
Ngo Ho, San Jose, CA (US);
3COM Corporation, Santa Clara, CA (US);
Abstract
An asynchronous switching circuit for multiple indeterminate bursting clocks. In one embodiment, the present invention recites a clock-switching circuit that provides a single unclipped and glitch-free clock signal at its output from among multiple clock inputs. The clock-switching circuit is comprised of a plurality of asynchronously-enabled clock circuits, a plurality of blocking circuits, a synchronizing clock, and a logic gate. Each of the plurality of blocking circuits has an input lead respectively coupled to one of the plurality of asynchronously-enabled clock circuits, each of the plurality of blocking circuits also has an output coupled to all of the plurality of asynchronously-enabled clock circuits except the one to which its input is coupled. The synchronizing clock is coupled to each of the plurality of blocking circuits while the logic gate is coupled to each of the plurality of asynchronously-enabled clock circuits.