Camera automatically operable in a flash photographic mode for p

Details Camera automatically operable in a flash photographic mode for p Camera automatically operable in a flash photographic mode for p

1989-01-24

1991-01-29

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Recording apparatus

35821313, 358221, H04N 5235

Patent

active

049890930

ABSTRACT:
A camera changeable between an ordinary photographic mode and a flash photographic mode includes a light source identifying device for identifying the illumination light provided from a fluorescent lamp based on an output from a light measuring device. The light source identifying device is detects ripple components of the output from the light measuring device to provide a flash control signal if the detected ripple components are higher than a predetermined level. The camera is changed into a flash photographic mode in response to the presence of the flash control signal in spite of the brightness of the subject field.

REFERENCES:
patent: 4618254 (1986-10-01), Therrien
patent: 4647975 (1987-03-01), Alston
patent: 4658303 (1987-04-01), Nagano
patent: 4677489 (1987-06-01), Nishimura
patent: 4860108 (1989-08-01), Saito

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