Spread spectrum clock generator with controlled delay elements

Details Spread spectrum clock generator with controlled delay elements Spread spectrum clock generator with controlled delay elements

2008-03-18

2008-03-18

Tse, Young T. (Department: 2611)

Pulse or digital communications

Spread spectrum

C375S364000

Reexamination Certificate

active

10783338

ABSTRACT:
A programmable spread spectrum clock generator (SSCG) reduces electromagnetic interference by spreading the frequency bandwidth of an output signal. The rate at which the frequency of the output signal changes, as well as other aspects of the output signal, are software programmable. The programmable SSCG receives a periodic signal whose cycles have substantially identical periods and outputs the output signal whose cycles have periods that vary smoothly over a plurality of cycles of the periodic signal. The programmable SSCG generates a control signal using the periodic signal. The programmable SSCG includes a variable delay element that generates the output signal by delaying the periods of the periodic signal based on the magnitude of the control signal. The output signal is generated without using a phase locked loop. Moreover, successive cycles of the output signal rarely have identical periods.

REFERENCES:
patent: 4041381 (1977-08-01), Hwa
patent: 5408639 (1995-04-01), Gulick et al.
patent: 5488627 (1996-01-01), Hardin et al.
patent: 5572722 (1996-11-01), Vogley
patent: 5631920 (1997-05-01), Hardin
patent: 5867524 (1999-02-01), Booth et al.
patent: 5872807 (1999-02-01), Booth et al.
patent: 5987058 (1999-11-01), Sanderford et al.
patent: 6292507 (2001-09-01), Hardin et al.
patent: 6529993 (2003-03-01), Rogers et al.
patent: 6643317 (2003-11-01), Blumer
patent: 6647052 (2003-11-01), Hailey
patent: 6658043 (2003-12-01), Hardin et al.
patent: 6665019 (2003-12-01), Pronkine
patent: 2004/0095988 (2004-05-01), Kim et al.

Affiliated with

Also associated with

Rating

Spread spectrum clock generator with controlled delay elements does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Spread spectrum clock generator with controlled delay elements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spread spectrum clock generator with controlled delay elements will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3944990