Patent ID: 9025216
Filing Date: 2015-05-05
Classification: H04N

Abstract:
1. An image reading apparatus comprising: a plurality of light-receiving elements configured to be arranged side by side in a main-scanning direction and to perform photoelectric conversion pixel by pixel; a plurality of AD converter units configured to convert each piece of analog data received from the plurality of light-receiving elements into parallel pieces of digital data; a storage unit configured to store therein each of the parallel pieces of digital data converted by the plurality of AD converter units; a converter unit configured to read the digital data stored in the storage unit and convert the read digital data into serial data in the main-scanning direction; a readout control unit configured to changeably control a readout start pixel and a readout end pixel of the serial data converted by the converter unit in the main-scanning direction; and a period change unit configured to change a period in which the converter unit converts the digital data into serial data in the main-scanning direction based on the readout start pixel and the readout end pixel controlled by the readout control unit.