Title:
METHOD AND DEVICE FOR CRC ENCODING
Document Type and Number:
Japanese Patent JP3237700
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To maintain high error detecting capability even if received data are bits shifted by performing encoding by using both CRC-16 and CRC-CCITT and changing the order of information input for respective encoding processes at the time of the calculation of CRC-16 and CRC-CCITT.
SOLUTION: Source transmit data at the MSB head is inputted to a data inversion part 1 and converted into data having the LSB at the head, and the resulting data is inputted to a CRC-16 encoder 2. After its encoding, the data except the 16 bits at the rail is converted by a data inversion part 3 into the data at the MSB head and the data is encoded by a CRC-CCITT encoder 4 and transmitted. On a reception side, the MSB head data has the CRC-CCITT code part deleted by a CRC-CCITT encoder 14 and the data except the 16 bits at the tail is converted by a data inversion part 13 into the data at the LSB head; and a CRC-16 encoder 12 deletes the CRC-16 code part and a data inversion part 11 converts the data into the data at the MSB head and outputs the data in the original data format.
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Inventors:
Masayuki Sakata
Application Number:
JP27068697A
Publication Date:
December 10, 2001
Filing Date:
October 03, 1997
Export Citation:
Assignee:
NEC
International Classes:
H03M13/00; H03M13/09; H03M13/15; H03M13/29; H04B1/74; H04L1/00; (IPC1-7): H03M13/29; H03M13/15; H04B1/74; H04L1/00
Domestic Patent References:
| JP8195736A | ||||
| JP8115230A | ||||
| JP670032U |
Attorney, Agent or Firm:
Yosuke Goto (1 person outside)
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