Communication control apparatus and control method
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United States of America Patent
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Sep 23, 2014
Grant Date -
Feb 9, 2012
app pub date -
Jul 21, 2011
filing date -
Aug 4, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A communication control apparatus transfers received data from an external unit to a first memory unit, and at the same time transferring a header portion of the received data to a second memory unit, and performs addition operations the received data transferred to the first memory unit to obtain a checksum value of the received data. It analyzes the header portion transferred to the second memory unit in response to the completion of transferring the header portion to the second memory unit. Then, it acquires an addition value for the region except object regions of checksum for determining an error in the received data, and determines the error in the received data using the result of the addition operation for the received data by the adding unit and the addition value acquired by the acquiring unit.
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