Patent ID: 6793312
Filing Date: 2004-09-21
Classification: G06K

Abstract:
An ink jet recording apparatus provided with plural print buffers for storing recording data, and a null flag table capable of setting null flags corresponding to said print buffers, respectively, instead of storing null data on said print buffers, comprising:data converting means for converting specific data, being provided with plural writable blocks for writing the recording data, and with a counter for retaining a value to designate a writable block; clear means for zero clearing a writable block in accordance with the value of said counter; DMA means for reading out the recording data from said print buffers for writing the recording data on said writable blocks; null flag examination means for examining the null flags corresponding to each of the print buffers; and control means for enabling said clear means to zero clear a writable block when a null flag is set on said null flag table corresponding to a print buffer, instead of performing a process by said DMA means to read out data from said print buffer.