Claims
- 1. A data recording method for recording data on an optical data recording card having a plurality of data arrays, wherein a pit for indicating the center line position of a data array is added at either end of said data array and at least two parallel bars which serve as a guide in case of reading the data arrays are extended in a vicinity of one of the ends of said data arrays in a direction perpendicular to said data arrays, said pit being located between said bars and said data arrays and a distance between said bars and said pit being set to a predetermined constant, the length of said pit indicating the center line position being shorter than those of pits constituting each data array.
- 2. The data recording method of claim 1, wherein said pit indicating the center line position is a circular pit, the center of which coincides with said center line.
Priority Claims (8)
Number |
Date |
Country |
Kind |
60-87181 |
Apr 1985 |
JPX |
|
60-87182 |
Apr 1985 |
JPX |
|
60-87183 |
Apr 1985 |
JPX |
|
60-87184 |
Apr 1985 |
JPX |
|
60-272296 |
Dec 1985 |
JPX |
|
60-272297 |
Dec 1985 |
JPX |
|
60-272298 |
Dec 1985 |
JPX |
|
60-286561 |
Dec 1985 |
JPX |
|
Parent Case Info
This is a division of application Ser. No. 07/006,560 filed Dec. 18, 1986, now abandoned.
US Referenced Citations (4)
Foreign Referenced Citations (4)
Number |
Date |
Country |
55617 |
May 1977 |
JPX |
8113 |
Jan 1978 |
JPX |
54-16 |
Jan 1979 |
JPX |
58-727 |
Dec 1983 |
JPX |
Non-Patent Literature Citations (2)
Entry |
Electronics, 5/1/75, p. 90. |
International Organization for Standardization, 6/1/76, pp. 4, 5. |
Divisions (1)
|
Number |
Date |
Country |
Parent |
6560 |
Dec 1986 |
|