Cyclic redundancy check operating method and a head error checke

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

1992-03-10

1994-09-06

Beausoliel, Jr., Robert W.

Excavating

371 377, 371 471, G06F 1110

Patent

active

053454510

ABSTRACT:
A CRC operating unit which performs a CRC operation on received data using as an initial value a CRC operation result actual value obtained in a previous operation, and outputs a CRC operation result actual value. A delay unit delays the CRC operation result actual value by the time 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.

REFERENCES:
patent: 4397020 (1983-08-01), Howson
patent: 4700350 (1987-10-01), Douglas et al.
patent: 5155487 (1992-10-01), Tanaka et al.
patent: 5230002 (1993-07-01), Yamashita et al.
T. Kitami, "Synchronization Method Employing a Cyclic Redundancy Check in an Asynchronous Transport System", Electronics and Communications in Japan, vol. 73, No. 5, May 1, 1990, New York pp. 99-108.

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