Delay circuit

Details Delay circuit Delay circuit

1996-02-27

1997-07-08

Tran, Toan

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Having specific delay in producing output waveform

327161, 327263, 327403, H03H 1126

Patent

active

056465688

ABSTRACT:
A delay circuit is mainly configured by a plurality of paths, each having a different amount of delay, and at least selector. The selector selects one of the paths on the basis of delay data in such a way that a desired amount of delay is obtained. When an input pulse signal is applied to the delay circuit, the input pulse signal is delivered to the paths, so that pulses respectively transmit through the paths with being delayed by different delay times. For this reason, the pulses should arrive the selector at different timings which are affected by manufacturing process of circuit elements, variation of temperature and deviation of power-supply voltage. The selector is designed to cope with a problem due to different arrival timings of the pulses. Specifically, selection for the paths is made based on the delay data in synchronization with a trailing edge of a pulse which transmits through a path whose amount of delay is largest within the paths; or selection for the paths is made by select data which have been made based on the delay data before the pulses actually arrive the selector. Such a timing adjustment is automatically performed between the pulses and delay data by the selector. As a result, the delay circuit is capable of performing on-the-fly operation at high speed in a stable manner.

REFERENCES:
patent: 4386323 (1983-05-01), Jansen
patent: 4719365 (1988-01-01), Misono
patent: 5136180 (1992-08-01), Caviasca et al.
patent: 5204564 (1993-04-01), Ochiai
patent: 5467041 (1995-11-01), Baba et al.

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