Image reading apparatus controllable by external apparatus

Details Image reading apparatus controllable by external apparatus Image reading apparatus controllable by external apparatus

1992-04-09

1994-02-01

Brinich, Stephen

Facsimile and static presentation processing

Facsimile

Synchronization

358410, H04N 140

Patent

active

052836622

ABSTRACT:
In an image reading apparatus, a signal generator generates a clock signal having a predetermined frequency, and generates a horizontal synchronizing signal in synchronous with the clock signal, and an image sensor reads a document image by scanning the document image in a main scan direction every horizontal scanning line in synchronous with the clock signal, and converts the read document image into an image signal. On the other hand, a stepping motor moves the image sensor and the document image relatively to each other in a subscan direction perpendicular to the main scan direction by one horizontal scanning line in synchronous with the clock signal. Further, a signal interface outputs the horizontal synchronizing signal and the image signal to an external apparatus. On the other hand, a receiver receives a stop request signal from the external apparatus. A controller controls the signal interface to stop the operations of the stepping motor and the signal interface, in response to the received stop request signal.

REFERENCES:
patent: 3967243 (1976-06-01), Kawa
patent: 4222102 (1983-12-01), Tamura
patent: 4679096 (1987-07-01), Nagashima
patent: 4691237 (1987-09-01), Shimizu
patent: 4760466 (1988-07-01), Nakamura
patent: 4807044 (1989-02-01), Kikuchi et al.
patent: 4860118 (1989-08-01), Arimoto
patent: 4893194 (1990-01-01), Sakata
patent: 4992888 (1991-02-01), Nagashima

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