Claims
- 1. A recording and reproducing method for an optical information recording medium in which a light beam is irradiated to change a state of a photo-sensitive record layer, wherein write data to be recorded into each sector of the optical information recording medium include a synchronizing signal, a data head indicating mark added to the end of the synchronizing signal, original write data following the data head indicating mark, and dummy data added to the end of the original write data, and wherein a length of the dummy data is altered according to a length of the synchronizing signal.
- 2. A recording and reproducing method according to claim 1, wherein the write data are recorded so that a total length of the synchronizing signal and the dummy data is constant for each sector of the optical information recording medium.
- 3. A recording and reproducing apparatus for an optical information recording medium in which a light beam is irradiated to change a state of a photo-sensitive record layer, comprisingmeans for recording in turn a synchronizing signal, a data head indicating mark, original write data and dummy data into each sector of the optical information recording medium; and means for altering a length of the dummy data according to a length of the synchronizing signal.
Priority Claims (3)
Number |
Date |
Country |
Kind |
6-316595 |
Dec 1994 |
JP |
|
7-187533 |
Jul 1995 |
JP |
|
7-187534 |
Jul 1995 |
JP |
|
Parent Case Info
This application is a divisional of application Ser. No. 10/266,653, filed Oct. 7, 2002, which is a continuation application of Ser. No. 08/574,306, filed on Dec. 18, 1995, U.S. Pat. No. 6,487,151 which application(s) are incorporated herein by reference.
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Continuations (1)
|
Number |
Date |
Country |
Parent |
08/574306 |
Dec 1995 |
US |
Child |
10/266653 |
|
US |