Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1981-09-04
1984-06-12
Curtis, Marshall M.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340791, G09G 116
Patent
active
044545061
ABSTRACT:
The flicker which results from large intensity differences in adjacent scan lines of a symbol displayed in an interlaced-field format is reduced by a non-linear signal filter and signal generator. The disclosed filter and signal generator changes the intensity of a scan line adjacent to a scan line of a symbol in response to a detected predetermined intensity difference between the adjacent scan line and the symbol scan line.
REFERENCES:
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patent: 3573789 (1971-04-01), Sharp et al.
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patent: 4063232 (1977-12-01), Fernald
patent: 4215414 (1980-07-01), Huelsman
patent: 4237457 (1980-12-01), Houldsworth
patent: 4354186 (1982-10-01), Groothuis
Netravali Arun N.
Pirsch Peter
Bell Telephone Laboratories Incorporated
Caccuro John A.
Curtis Marshall M.
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