Pattern display signal generating apparatus and display apparatus using the same
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United States of America Patent
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Mar 26, 1991
Issued Date -
N/A
app pub date -
May 23, 1990
filing date -
Mar 25, 1987
priority date (Note) -
Expired
status (Latency Note)
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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.
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