Duty cycle correction circuit of delay locked loop and the...

Details Duty cycle correction circuit of delay locked loop and the... Duty cycle correction circuit of delay locked loop and the...

2006-10-03

2006-10-03

Callahan, Timothy P. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

C327S172000

Reexamination Certificate

active

07116149

ABSTRACT:
There is provided a Delay Locked Loop (DLL) including a duty cycle correction circuit capable of controlling a duty error, when the duty error is generated in the DLL. The duty cycle correction circuit controls amounts of electric charges accumulated in storage units, in response to switching control signals received from the external, and outputs duty rate control signals each corresponding to a difference between the amounts of electric charges accumulated in the storage units. Therefore, the DLL including the duty cycle correction circuit can correct a duty cycle of a reference clock signal, in response to the duty rate control signals, and can output a reference clock signal with a duty cycle of 50%.

REFERENCES:
patent: 5945862 (1999-08-01), Donnelly et al.
patent: 6181178 (2001-01-01), Choi
patent: 6342801 (2002-01-01), Shin
patent: 6643790 (2003-11-01), Yu et al.
patent: 6735669 (2004-05-01), Shin
patent: 6853225 (2005-02-01), Lee

Affiliated with

Also associated with

Rating

Duty cycle correction circuit of delay locked loop and the... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Duty cycle correction circuit of delay locked loop and the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Duty cycle correction circuit of delay locked loop and the... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3623640