Arrangement and method for digital delay line

Details Arrangement and method for digital delay line Arrangement and method for digital delay line

2007-08-21

2007-08-21

Chang, Joseph (Department: 2817)

Oscillators

Ring oscillators

C331S046000, C331S002000

Reexamination Certificate

active

10872066

ABSTRACT:
An arrangement (100) and method for a high precision and low distortion digital delay line with infinite delay. The digital delay line has an oscillating ring (110) with an odd number of inverting elements that triggers a counter (120). A comparator (130) compares the counter and the MSB of a given delay word. A line of inverters (150–159), double the odd number in the ring oscillator, is connected to a MUX (160) controlled by the LSB of the delay word.This provides the advantages of: high resolution due to use of a small, basic component, self-delay ring oscillator; small silicon area due to use of a special decoding scheme use the rings number to produce large delays; and easy implementation as a digital block in an integrated circuit using a standard cells library to build the ring and the decoder.

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Combined Search and Examination Report for GB0314193.4.

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