Method and circuitry for reducing flicker in symbol displays

Details Method and circuitry for reducing flicker in symbol displays Method and circuitry for reducing flicker in symbol displays

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:
patent: 2921124 (1960-01-01), Graham
patent: 3192315 (1965-06-01), Remley
patent: 3573789 (1971-04-01), Sharp et al.
patent: 3953668 (1976-04-01), Judice
patent: 4063232 (1977-12-01), Fernald
patent: 4215414 (1980-07-01), Huelsman
patent: 4237457 (1980-12-01), Houldsworth
patent: 4354186 (1982-10-01), Groothuis

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