Title:
【発明の名称】CRC演算方法及びATM交換方式におけるHEC同期装置
Document Type and Number:
Japanese Patent JP2655547
Kind Code:
B2
Abstract:
A CRC operating unit (602) 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 (604) delays the CRC operation result actual value by the time taken for a header part to be entered. The CRC operation result derivation unit (605) 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 (607) 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.
Inventors:
URYU SHIRO
YOSHIMURA SHUJI
YOSHIMURA SHUJI
Application Number:
JP4840691A
Publication Date:
September 24, 1997
Filing Date:
March 13, 1991
Export Citation:
Assignee:
FUJITSU KK
International Classes:
H03M13/00; H04L1/00; H04L7/04; H04L7/00; H04L12/70; H04Q11/04; (IPC1-7): H04L12/28; H03M13/00
Domestic Patent References:
| JP6461124A | ||||
| JP4150631A | ||||
| JP4211547A | ||||
| JP398346A |
Attorney, Agent or Firm:
Yoshiyuki Osuge (1 outside)