LINEAR IMAGE SENSOR AND SYSTEM FOR READING IMAGE BY LINEAR IMAGE SENSOR

摘要

PURPOSE:To prevent the generation of a switching noise due to a switch for a signal by providing the signal block of a dummy switch group corresponding to the block of the switch group for the signal. CONSTITUTION:For a switching noise output terminal 6, one side is made into an opened condition, and the terminal 6 is connected to the other sides of dummy switches S11, S12...S1n operated by the same timings as switches S1, S2...Sn for signals connected to a light signal output terminal 5. Since the other side of the S1n is connected from the dummy switch S11 whose one side is opened to the switching noise output terminal 6, the time series only with the switching noise is generated. Consequently, a difference between the time series signal of the light signal output terminal 5 and the time series signal of the switching noise output terminal 6 is obtained. Thus, an image signal only with the light signal not to contain the switching noise can be obtained.