Patent ID: 6381040
Filing Date: 2002-04-30
Classification: H04N

Abstract:
An image reading apparatus, comprising:a memory; a plurality of data controllers; a serial-to-parallel converter converting serial image data from a first data controller of said plurality of data controllers into parallel image data; an input buffer latching said parallel image data converted by said serial-to-parallel converter; a first write mechanism writing a set of the parallel image data latched in said input buffer into said memory; a first read mechanism reading said set of the parallel image data from said memory; an output buffer latching said set of the parallel image data from said memory; a data output mechanism outputting said set of the parallel image data from said output buffer; a second write mechanism writing data from a second data controller of said plurality of data controllers into said memory, said second write mechanism being selectively used with said first write mechanism; and a second read mechanism reading said set of the parallel image data in said memory and transferring said read data to said second data source, said second read mechanism being selectively used with said first read mechanism, wherein said first data controller controls said first write and read mechanisms and said second data controller controls said second write and read mechanisms.