Programmable and pausable clock generation unit

Details Programmable and pausable clock generation unit Programmable and pausable clock generation unit

2011-06-14

2011-06-14

Ahn, Sam K (Department: 2611)

Pulse or digital communications

Receivers

Interrupted carrier wave

Reexamination Certificate

active

07961820

ABSTRACT:
In an example embodiment, a clock generation circuit comprises two programmable ring oscillators arranged and configured to operate in a mutually exclusive manner, and a variable programmable delay element (not shown). An input programming pattern is provided as an input to the oscillating circuit, the programming pattern providing data representative of the sequence of frequencies at which the clock signal is required to be generated. The outputs of both the oscillators are connected to a clock switch (16), from which the generated clock signal is output. When a request for a change of frequency is received, the currently idle oscillator is first activated with the next required frequency, the output of the currently operative oscillator is then gated when the clock signal thereof goes low. Next, the previously gated output of oscillator is un-gated when its output goes low, and then oscillator is de-activated.

REFERENCES:
patent: 4855615 (1989-08-01), Humpleman et al.
patent: 5208557 (1993-05-01), Kersh
patent: 5291528 (1994-03-01), Vermeer
patent: 5398244 (1995-03-01), Mathews et al.
patent: 5652536 (1997-07-01), Nookala et al.
patent: 6138019 (2000-10-01), Trompower et al.
patent: 6219797 (2001-04-01), Liu et al.
patent: 6522698 (2003-02-01), Irving et al.
patent: 2002/0172309 (2002-11-01), Cheng
patent: 2005/0080999 (2005-04-01), Angsmark et al.
patent: 0 613 074 (1994-08-01), None
patent: WO 99/21280 (1999-04-01), None

Affiliated with

Also associated with

Rating

Programmable and pausable clock generation unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Programmable and pausable clock generation unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Programmable and pausable clock generation unit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2644841