Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Patent
1996-11-08
1999-03-16
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Synchronizing
327160, 327161, H03L 706
Patent
active
058835342
ABSTRACT:
The operating speed of an apparatus which operates with a clock is increased by obtaining a clock having a constant duty ratio. The maximum variable delay quantity of a first variable delay circuit 11 is set more than one cycle and less than two cycles of an input clock IN. The delay quantities of the first and second variable delay circuits 11, 12 are decreased with a control signal Vin. In addition, the ratio of the delay quantity of the second variable delay circuit 12 to that of the first variable delay circuit 11 is set to a constant value which is less than 1. A control portion 13 increases and decreases the control signal Vin in such a manner that the phases of an input clock IN and an output clock OUT-A of the first variable delay circuit are coincident with each other. An output clock OUT of the device is set by the output clock OUT-A of the first variable delay circuit, and is reset by an output clock OUT-B of the second variable delay circuit. Consequently, the output clock of the device has the same phase as that of the input clock IN and a constant duty ratio.
REFERENCES:
patent: 4994687 (1991-02-01), Fujii et al.
patent: 5136260 (1992-08-01), Youselfi-Elezei
patent: 5285122 (1994-02-01), Honda et al.
patent: 5412698 (1995-05-01), Van Brunt et al.
patent: 5670903 (1997-09-01), Mizuno
patent: 5684421 (1997-11-01), Chapman et al.
Ishiwaki Masahiko
Kondoh Harufusa
Notani Hiromi
Callahan Timothy P.
Mitsubishi Denki & Kabushiki Kaisha
Nu Ton My-Trang
LandOfFree
Waveform shaping device and clock supply apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Waveform shaping device and clock supply apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Waveform shaping device and clock supply apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-821088