Data processing device and data processing method

摘要

A data processing device includes: a data reading unit that reads a predetermined amount of data; a data-period selection unit that selects a data period in units of the predetermined amount of data; a data clipping unit that clips data from the read data with the data period; an intermediate-data conversion unit that converts the clipped data into intermediate data; and a coding processing unit that codes the intermediate data. The data-period selection unit has a match count unit that obtains count values of matches in data between pieces of divided data that are obtained by dividing the read data in units of respective predetermined periods, and selects one of the periods of divided data that provides largest one of the count values of matches or selects, when some of the count values are the same, largest one of the periods that provide the same count value.

主权项

1. A data processing device that codes data, comprising:
a data reading unit that reads a predetermined amount of data stored in a data storage unit; a data-period selection unit that selects a data period for the read data by performing a data period detection operation on the read data in units of the predetermined amount of data; a data clipping unit that clips data from the read data with the data period selected by the data-period selection unit; an intermediate-data conversion unit that converts the clipped data into intermediate data; and a coding processing unit that codes the intermediate data converted by the intermediate-data conversion unit, wherein,
the data-period selection unit is configured to divide the read data in units of respective predetermined periods,the data-period selection unit has a match count unit that is configured to obtain count values of matches in data between pieces of the divided data,the data-period selection unit includes a quantization unit configured to quantize the count values of matches in data, andthe quantization unit is configured to,
select one of the periods of divided data that provides a largest one of the quantized count values of matches obtained by the match count -unit, orselect, when some of the quantized count values are the same,a largest one of the periods that provide a same count value.