Title:
DATA TRANSMISSION ERROR MONITORING SYSTEM, DATA TRANSMITTER, DATA RECEIVER AND DATA TRANSMISSION ERROR MONITORING METHOD
Document Type and Number:
Japanese Patent JP3497435
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To detect continuous bit errors and further easily detect the presence/ absence of error occurrence in each repeat section.
SOLUTION: In a data transmitter 11, continuous data streams are divided into n' pieces of data sequences and respective parities are counted by a parity counter 2. Then, these count values are converted to the parity code word of (m) bits by an encoder 3, according to n' B/mB code conversion rules, and the idle set of continuous data streams is replaced with a parity set containing the parity code words from the encoder 3 by a replacer 4 and transmitted. In a data receiver 13, the respective parity count values are restored by a decoder 7 from the parity set detected, from the received continuous data streams by a detector 6, the continuous data streams are divided into n' data sequences, parities are counted for each of data sequences by a parity counter 8 while excluding the parity set, and the outputs of the decoder 7 and the parity counter 8 are compared by a comparator 9.
Inventors:
Osamu Ishida
Kenji Kawai
Haruhiko Ichino
Kenji Kawai
Haruhiko Ichino
Application Number:
JP2000040653A
Publication Date:
February 16, 2004
Filing Date:
February 18, 2000
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
G06F11/10; H03M7/14; H03M13/09; H03M13/11; H03M13/27; H04B17/00; H04B17/309; H04L1/00; (IPC1-7): H03M13/11; G06F11/10; H03M7/14; H03M13/27; H04L1/00
Domestic Patent References:
| JP298244A | ||||
| JP5834656A |
Attorney, Agent or Firm:
Masaki Yamakawa