Camera having an acoustic indicator for generating sounds to ind

Details Camera having an acoustic indicator for generating sounds to ind Camera having an acoustic indicator for generating sounds to ind

1978-10-12

1981-06-09

Hix, L. T.

354289, G03B 1720, G03B 1740

Patent

active

042721768

ABSTRACT:
A camera includes a circuit which determines the level of a supply voltage and a self-timer delay circuit associated with an electrical shutter. The camera also includes an acoustic indicator which includes a pulse oscillator and a small size acoustic alarm unit and which operates to produce a sound substantially continuously to indicate the level of the supply voltage and to produce a sound intermittently in order to indicate that the self-timer is in operation.

REFERENCES:
patent: 3487404 (1969-12-01), Midkiff
patent: 3592113 (1971-07-01), Von Wasielewski
patent: 3776625 (1973-12-01), Fountain
patent: 3872470 (1975-03-01), Hoertz et al.
patent: 3956758 (1976-05-01), Numata et al.
patent: 4047210 (1977-09-01), Espig
patent: 4114176 (1978-09-01), Kawasaki

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