Variable-delay element with an inverter and a digitally...

Details Variable-delay element with an inverter and a digitally... Variable-delay element with an inverter and a digitally...

2001-06-29

2003-06-03

Callahan, Timothy P. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Having specific delay in producing output waveform

C327S270000

Reexamination Certificate

active

06573777

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a delay circuit in a data processing system, and more particularly, to a digitally adjustable resistor applied to the construction of a variable-delay element.
BACKGROUND
Data processing systems, such as microprocessors, may include a circuit designed to distribute a reference signal called a clock to synchronize the processing of data. The clock may be distributed to multiple elements acting as receivers in the data processing systems. The closer the sequential elements are to receiving the clock at the same time, the faster the data processing systems can be. Delay elements may compensate the undesired delay variations experienced by the clock when the clock travels toward the receivers, thereby increasing the system speed.


REFERENCES:
patent: 5790612 (1998-08-01), Chengson et al.
patent: 5828258 (1998-10-01), Ooishi et al.
patent: 6025747 (2000-02-01), Okayasu et al.
patent: 6297680 (2001-10-01), Kondo

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