Patent ID: 8509227
Filing Date: 2013-08-13
Classification: H04L,H04N

Abstract:
1. A data analysis apparatus comprising: a unique pattern detection unit configured to conduct a search for a pattern data sequence in a forward direction of a data sequence constituted of successive data blocks each including a unique pattern, header information following the unique pattern and a data body following the header information, the pattern data sequence being the same as the unique pattern; an extraction unit configured to extract header information from a subsequent data sequence following the pattern data sequence detected by the search; an extraction starting position storing unit configured to store extraction starting position information indicating a position of a head of the header information of the subsequent data sequence wherein the extraction starting position storing unit is a memory device which is inside of the data analysis apparatus; an error checking unit configured to conduct an error check on extraction header information that is the header information extracted by the extraction unit; and a control unit configured, if any error is detected from the extraction header information by the error checking unit, to cause the unique pattern detection unit to resume the search for the pattern data sequence from the position of the head of the header information indicated by the extraction starting position information stored in the extraction starting position storing unit, wherein the extraction starting position storing unit stores the extraction starting position information before the error checking unit conducts the error check.