Scanner with video output

摘要

In a scanner (4), analog sensor data is generated from a document. The analog sensor data is converted to an image video signal. The image video signal is delivered to a display system (6). The scanner (4) includes a controller for controlling the scanning of the document, converting the signals, and delivering the image video signal to the display system (6). The analog sensor data is generated by directing light from a light source (18) onto the document, the light is reflected onto a light sensor (20) that generates the analog sensor data response to the light reflected from the document. The analog sensor data may either be converted directly to the image video signal or first digitized to produce digitized sensor data. The image video signal is either a composite video image or an s-video image. Additionally, the scanner (4) may include a pass-through device for selectively passing an external video signal to the display system (6). <IMAGE>