Title:
MEDIUM FOR RECORDING AND REPRODUCING INFORMATION, MEDIUM FORMAT DEVICE FOR RECORDING AND REPRODUCING INFORMATION AND INFORMATION RECORDING AND REPRODUCING DEVICE
Document Type and Number:
Japanese Patent JP2954132
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent erroneous detection for an address mark caused by a synchronizing pattern affected by a defective bit by recording a pattern which includes a pattern satisfying run length 13 when the upper limit value of the run length limit of the synchronizing pattern is 3 as the address mark.
SOLUTION: A pattern of an address mark includes a pattern satisfying run length (n) [n>m, n≠rm+(r-1), r: a natural number] of a symbol 0 when the upper limit value of the run length of the symbol 0 of a synchronizing pattern is made to (m). A pattern of the run length (m) of the symbol 0 is arranged adjacently to a pattern of the run length (n) of the symbol 0. Further, a pattern in which patterns including a symbol 1 of odd numbers are repeated an even number of times is made to a pattern of the address mark. Thus, erroneous detection for the address mark caused by a reproduced pattern of the synchronizing pattern affected by a defective bit can be prevented.
Inventors:
TAGAMI KOKI
OOSAWA HIDEAKI
OOSAWA HIDEAKI
Application Number:
JP1981898A
Publication Date:
September 27, 1999
Filing Date:
January 30, 1998
Export Citation:
Assignee:
TOSHIBA KK
International Classes:
G11B20/12; G11B7/00; G11B7/004; G11B7/007; G11B20/14; (IPC1-7): G11B20/14
Domestic Patent References:
| JP6267075A | ||||
| JP5225709A | ||||
| JP5225710A |
Attorney, Agent or Firm:
Takehiko Suzue (6 outside)