Parallel to serial conversion circuit

Details Parallel to serial conversion circuit Parallel to serial conversion circuit

2009-04-24

2010-10-26

Nguyen, Khai M (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

Parallel to serial

C341S144000

Reexamination Certificate

active

07821429

ABSTRACT:
A parallel to serial conversion circuit includes a plurality of switching units and a voltage output unit providing an operating voltage for the switching units. Each of the plurality of switching units is operable to receive a first clock signal and a second clock signal which have the same frequency, a phase shift exists between the first clock signal and the second clock signal for each of the switching units, and a phase difference exists between the first clock signals received by adjacent two switching units of the plurality of switching units. The plurality of switching units receive data bits of parallel data in sequence according to the phase difference, particularly, each of the plurality of switching units receives one data bit within a time window corresponding to the phase shift. In comparison with the prior art, the inventive solution implement the parallel to serial conversion using a single system clock frequency, so that the complexity and power consumption of the system is reduced.

REFERENCES:
patent: 5243347 (1993-09-01), Jackson et al.
patent: 6417790 (2002-07-01), Fiedler et al.
patent: 6614372 (2003-09-01), Shi
patent: 6771194 (2004-08-01), Shi

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