1983-04-06
1985-01-08
Adams, Russell E.
G03B 708
Patent
active
044924526
ABSTRACT:
A picture blur-alarm device for a camera includes a photo-electric converter for time-sequentially sending brightness data including analog signal components which correspond to the brightness of the plurality of regions of an optical image of a foreground object, a comparator for comparing two successive brightness data time-sequentially issued from the photo-electric converter, and producing an output signal corresponding to the number of those of the analog signal components of a preceding brightness data which have different levels from corresponding analog signal components of a succeeding brightness data; and an alarm circuit which issues an alarm signal when an output signal from the comparator has a higher level than prescribed.
REFERENCES:
patent: 4218119 (1980-08-01), Schickedanz
Japanese Patent Disclosure (KOKAI) No. 55-40423; S. Hagioda et al., Mar. 21, 1980.
Arakawa Takao
Moriyasu Toshinori
Sasaki Masayuki
Suzuki Shin'ichi
Adams Russell E.
Tokyo Shibaura Denki Kabushiki Kaisha
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