Phototelegraphic apparatus for transmitting images of film and d

Telephonic communications – Telephone line or system combined with diverse electrical... – To produce visual-graphic copy

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358285, 358 85, 358293, H04N 104

Patent

active

046583017

ABSTRACT:
An apparatus for electrically transmitting the image of a pattern corresponding to the light transmission characteristic of a light-transmitting film substrate employs a linear image sensor for scanning the image of the pattern and producing a corresponding output signal, the frequency band of which is adjusted for transmission over a telephone circuit. The output signal can be made independent of magnification changes of the image-forming optical system, and the area of the pattern scanned by the linear image sensor can be set selectively. A second optical system is employed for observation and includes a retractable mirror that starts the production of the output signal when the mirror is retracted. Both a film image and data on an accompanying document can be transmitted.

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patent: 4502080 (1985-02-01), Tsuda
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