Delay device and delay time measurement device using a ring osci

Details Delay device and delay time measurement device using a ring osci Delay device and delay time measurement device using a ring osci

1997-06-04

1998-12-08

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Having specific delay in producing output waveform

327 3, G01R 2508

Patent

active

058475907

ABSTRACT:
A ring oscillator is an oscillator, which is composed of serially connected buffers, for outputting a plurality of phases, and a last buffer output is inverted and fed back to a first buffer. A decoder selects one of outputs from the ring oscillator according to externally supplied digital data indicating an amount of a delay time to be set. A counter counts an output from the decoder, and outputs a delay signal if a count value reaches a predetermined number. That is, the counter outputs a signal with an amount of delay time according to digital data.

REFERENCES:
patent: 5134371 (1992-07-01), Watanabe et al.
patent: 5289135 (1994-02-01), Hoshino et al.
patent: 5477196 (1995-12-01), Yamauchi et al.

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