MEDIUM FOR RECORDING AND REPRODUCING INFORMATION, MEDIUM FORMAT DEVICE FOR RECORDING AND REPRODUCING INFORMATION AND INFORMATION RECORDING AND REPRODUCING DEVICE,申请号JP19980019816-传众专利搜索

MEDIUM FOR RECORDING AND REPRODUCING INFORMATION, MEDIUM FORMAT DEVICE FOR RECORDING AND REPRODUCING INFORMATION AND INFORMATION RECORDING AND REPRODUCING DEVICE

申请公布号：JPH10308074(A)

申请号：JP19980019816

申请日期：1998.01.30

申请公布日期：1998.11.17

申请人：

TOSHIBA CORP

发明人：TAGAMI KOKI;OSAWA HIDEAKI

分类号：G11B20/12;G11B7/00;G11B7/004;G11B20/14;(IPC1-7):G11B20/12

主分类号：G11B20/12

摘要：PROBLEM TO BE SOLVED: To prevent erroneous detection for an address mark caused by a synchronizing pattern affected by a defective bit by making a pattern in which a pattern the being same as the synchronizing pattern is arranged adjacently to the pattern of run length exceeding the run length limit of a synchronizing pattern and patterns including a symbol 1 of odd numbers are repeated plural times as the address mark. SOLUTION: A pattern of an address mark includes a pattern of run length (n) [n>m, n≠rm+(r-1), r: a natural number] of a symbol 0 for the upper limit value (m) of the run length of a symbol 0 of a synchronizing pattern. A pattern of the run length (m) of the symbol 0 is arranged adjacently to the pattern of the run length (n) of the symbol 0 and 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.