Pattern display signal generating apparatus and display apparatu

Details Pattern display signal generating apparatus and display apparatu Pattern display signal generating apparatus and display apparatu

1990-05-23

1991-03-26

Brier, Jeffery A.

Communications: electrical

Continuously variable indicating

With meter reading

340735, 340748, G09G 530

Patent

active

050033042

ABSTRACT:
A pattern display signal generating apparatus comprises a memory for storing predetermined pattern data and for outputting even-numbered bits and odd-numbered bits of the pattern data in parallel when scanned, a timing generator for generating an address for scanning the memory and for generating first and second clock signal having a predetermined phase difference, a first shift register for shifting the odd-numbered bits and outputting the same in series in synchronization with the first clock signal, a second shift register for shifting the even-numbered bits and outputting the same in series in synchronization with the second clock signal, and a logical operation circuit for performing at least one predetermined logical operation between outputs of the first and second shift registers to generate a pattern display signal.

REFERENCES:
patent: 4408198 (1983-10-01), Kudirka
patent: 4517560 (1985-05-01), Murayama et al.
patent: 4613856 (1986-09-01), Olin et al.

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