Seiko Epson Corporation

Hiroaki Kasuga

Toshiki Takei

Atsuyuki Imaizumi

An image scanning apparatus comprising a plurality of image scanning sensorsand a CIS control chipfor controlling these image scanning sensorsThe CIS control chiphas a trigger generatorfor controlling operation of the image scanning sensorsa lamp control circuitand a motor control circuitThe CIS control chipalso has an AFEhaving a plurality of input terminalstofor receiving the analog image signals from the first scanning sensorsecond scanning sensorand third scanning sensorrespectively and a gain/offset control circuit for adjusting the gain and offset of each line of analog data supplied from the image scanning sensors

Image scanning apparatus

A data processing system enables faster exchange of data between data processing units having a CPU, and simplifies the writing of a data exchange program for the data processing units. A data processing apparatushas a communication unitwith a first storage unitand a second storage unitThe first storage unitis used for sending data from the first data processing unitto the second data processing unitThe second storage unitis used for sending data from the second data processing unitto the first data processing unitData can therefore be asynchronously exchanged between the data processing units without coordinating control of CPU operations in the data processing units, and control of data communication between the data processing units is simplified.

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Matsumoto, Japan

Hiroaki Kasuga