Pulse phase difference encoding circuit

Details Pulse phase difference encoding circuit Pulse phase difference encoding circuit

1995-01-19

1996-10-22

Wambach, Margaret Rose

Electrical pulse counters, pulse dividers, or shift registers: c

Systems

Having phase shift

324 7682, 327 3, H03K 2100

Patent

active

055680712

ABSTRACT:
A pulse phase difference encoding circuit provides a digital signal indicating a phase difference between a first input pulse and a second input pulse. The first input pulse is provided to and circulated in a ring signal delay circuit having a plurality of signal delay elements that are connected in series. Intermediate points between the delay elements provide delayed pulses having different delay times. Upon receiving the second input pulse, a selector selects one delay pulse provided by the delay element at which the first input pulse has arrived, and generates a digital positional signal indicating a position of the selected delay element. The number of rounds of circulation of the first input pulse in the ring signal delay circuit is separately counted. According to the number of rounds of circulation of the first pulse and the positional signal, the digital signal indicating the phase difference between the first and second input pulses is formed.

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