Tokyo Shibaura Denki Kabushiki Kaisha

Toshinori Moriyasu

Masayuki Sasaki

Shinichi Suzuki

Masanori Nakai

Takao Arakawa

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.

Picture blur-alarm device for a camera

A buffer circuit is provided wherein bipolar transistors are connected to the output terminal of an IIL gate. The buffer circuit includes an IIL gate having a plurality of output terminals. The output terminals of the IIL gate are respectively connected to the bases of the bipolar transistors of which the emitter-collector paths are connected in series between a buffer output terminal and a reference voltage terminal.

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Chigasaki, Japan

Toshinori Moriyasu