Method and apparatus for parallel in serial out transmission

Details Method and apparatus for parallel in serial out transmission Method and apparatus for parallel in serial out transmission

1997-03-18

1999-09-28

Hjerpe, Richard A.

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345100, 345197, G09G 336

Patent

active

059596015

ABSTRACT:
A method and apparatus for providing serial transmission of a parallel input is accomplished by a parallel input serial output transmitter that includes a shift register operably coupled to receive a parallel input and to provide data serially to a gating circuit. The gating circuit, based on the state of the data it receives, generates a drive signal which causes a switching circuit to route current from a first current source to a second current source over different paths to produce a serial output. A bias circuit is coupled to the switching circuit to bias the serial output to a desired level.

REFERENCES:
patent: 4721943 (1988-01-01), Stallkamp
patent: 4745485 (1988-05-01), Iwasaki
patent: 5365284 (1994-11-01), Matsumoto et al.

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