Cyclic redundancy check operating method and a head error...

Details Cyclic redundancy check operating method and a head error... Cyclic redundancy check operating method and a head error...

H - Electricity

04

L

H04L 1/00 (2006.01) H04L 7/04 (2006.01) H04Q 11/04 (2006.01) H04L 12/56 (2006.01)

Patent

CA 2062855

A CRC (Cyclic Redundancy Check) operating unit performs a CRC operation on received data using as an initial value a CRC operation result actual value obtained in the previous operation, and outputs a CRC operation result actual value. A delay unit delays the CRC operation result actual value by the lime taken for a header part to be entered. The CRC operation result derivation unit outputs as a CRC operation result derivation value an operation result obtained by a CRC operation performed for all the receiving data of a header part provided with the above described CRC code using the CRC operation result actual value as an initial value. The coincidence detecting unit compares the CRC operation result actual value with the CRC operation result derivation value to detect the input timing of a header part as coincident timing for both values.

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