Title:
METHOD FOR ENCODING AND DECODING ERROR CORRECTION CODE
Document Type and Number:
Japanese Patent JP3167663
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To avoid the occurrence of a state in which the error of effective information can not be corrected in a normal reproduction mode by performing the decoding of an error correction code after replacing a dummy information part by known dummy information at the error correction decoding.
SOLUTION: A signal g which is reproduced from a tape 100 is sent to an ECC 1 decoding circuit 121 and a stuffing data part detecting part 122. The circuit 121 performs decoding processing, based on an ECC 1 parity. A signal h after the decoding processing based on the ECC 1 parity is sent to a replacing circuit 123. The circuit 123 replace a part of stuffing data in the signal h after the decoding processing, based on the ECC 1 parity with stuffing data that is generated by a stuffing data generation circuit 114 in recording. An ECC decoding circuit 124 performs decoding processing, based on an ECC 2 parity and also, an ECC 3 decoding circuit 125 performs decoding processing, based on an ECC 3 parity.
Inventors:
Takashi Ohnaka
Shigekazu Minechika
Tomikawa Masahiko
Hirotsugu Murashima
Shigekazu Minechika
Tomikawa Masahiko
Hirotsugu Murashima
Application Number:
JP29121797A
Publication Date:
May 21, 2001
Filing Date:
October 23, 1997
Export Citation:
Assignee:
Sanyo Electric Co., Ltd.
International Classes:
H04N5/92; G11B20/12; G11B20/18; H03M13/00; H04N19/00; H04N19/44; H04N19/65; H04N19/70; H04N19/89; (IPC1-7): H04N5/92; G11B20/12; H04N7/24
Domestic Patent References:
| JP1131363A |
Attorney, Agent or Firm:
Hideyuki Kayama