Claims
- 1. An information recording method for recording information on a rewritable recording medium comprising the steps of:recording first synchronizing signal information in a first synchronizing signal portion on the rewritable recording medium; recording second synchronizing signal information in a second synchronizing signal portion following the first synchronizing signal portion on the rewritable recording medium; recording data information in a data portion of the rewritable recording medium after the second synchronizing signal portion by forming marks in the data portion wherein said data information corresponds to both ends of each of said record marks; wherein a length of the first synchronizing signal portion changes and a start position of the first synchronizing signal portion changes, and wherein a change of the start position of the first synchronizing signal portion is smaller than a change of the length of the first synchronizing signal portion.
- 2. An information recording medium according to claim 1, wherein the second synchronizing signal information is a fixed pattern.
- 3. An information recording method according to claim 1, wherein a polarity of the second synchronizing signal portion is changed depending on a polarity of a final end of the first synchronizing signal portion.
Priority Claims (2)
Number |
Date |
Country |
Kind |
8-136189 |
May 1996 |
JP |
|
9-079587 |
Mar 1997 |
JP |
|
CROSS REFERENCE TO RELATED APPLICATION
This is a continuation of U.S. application Ser. No. 09/712,969, filed Nov. 16, 2000, U.S. Pat. No. 6,307,825 which is a continuation of U.S. application Ser. No. 09/535,016, filed Mar. 24, 2000, now U.S. Pat. No. 6,181,661, which is a continuation of U.S. application Serial No. 09/350,282, filed Jul. 9, 1999, now U.S. Pat. No. 6,104,692, which is a continuation of U.S. application Ser. No. 08/863,126, filed May 27, 1997, now U.S. Pat. No. 5,953,299, the subject matter of which is incorporated by reference herein.
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Continuations (4)
|
Number |
Date |
Country |
Parent |
09/712969 |
Nov 2000 |
US |
Child |
09/949640 |
|
US |
Parent |
09/535016 |
Mar 2000 |
US |
Child |
09/712969 |
|
US |
Parent |
09/350282 |
Jul 1999 |
US |
Child |
09/535016 |
|
US |
Parent |
08/863126 |
May 1997 |
US |
Child |
09/350282 |
|
US |