JPS6476560A - Optical memory card - Google Patents
Optical memory cardInfo
- Publication number
- JPS6476560A JPS6476560A JP23255387A JP23255387A JPS6476560A JP S6476560 A JPS6476560 A JP S6476560A JP 23255387 A JP23255387 A JP 23255387A JP 23255387 A JP23255387 A JP 23255387A JP S6476560 A JPS6476560 A JP S6476560A
- Authority
- JP
- Japan
- Prior art keywords
- recording density
- information
- data
- medium identification
- identification information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE:To surely read information even when cards are used whose recording density of data parts are different individual cards are used by providing a medium identification information information part in which the information of the recording density of the data part is recorded before the data part of an information storage part. CONSTITUTION:The information storage part 2 is constituted of the medium identification information part 3, the data part 4, and furthermore, a gap part 5 between them. And the recording density of the data part 4 at least following the medium identification information part 3 is stored in the medium identification information part 3 so as to be read surely by a card reader in spite of the recording density of the data part 4. In such a way, it is possible to recognize the recording density of the data part 4 by the reader, and to read the information by the reader surely even when optical cards 1 with different recording density in the data parts 4 are used.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62232553A JP2506121B2 (en) | 1987-09-18 | 1987-09-18 | Optical memory card system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62232553A JP2506121B2 (en) | 1987-09-18 | 1987-09-18 | Optical memory card system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6476560A true JPS6476560A (en) | 1989-03-22 |
JP2506121B2 JP2506121B2 (en) | 1996-06-12 |
Family
ID=16941129
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62232553A Expired - Lifetime JP2506121B2 (en) | 1987-09-18 | 1987-09-18 | Optical memory card system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2506121B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009301705A (en) * | 1995-06-29 | 2009-12-24 | Lg Electronics Inc | Recording medium and information reproducing method |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5916113A (en) * | 1982-07-19 | 1984-01-27 | Hitachi Ltd | Reading system of magnetic information |
JPS5977606A (en) * | 1982-10-25 | 1984-05-04 | Sony Corp | Reproducing device of digital disc |
JPS62145590A (en) * | 1985-12-19 | 1987-06-29 | Dainippon Printing Co Ltd | Recording method for optical digital data |
JPS6355777A (en) * | 1986-08-26 | 1988-03-10 | Canon Inc | Information recording and reproducing device |
-
1987
- 1987-09-18 JP JP62232553A patent/JP2506121B2/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5916113A (en) * | 1982-07-19 | 1984-01-27 | Hitachi Ltd | Reading system of magnetic information |
JPS5977606A (en) * | 1982-10-25 | 1984-05-04 | Sony Corp | Reproducing device of digital disc |
JPS62145590A (en) * | 1985-12-19 | 1987-06-29 | Dainippon Printing Co Ltd | Recording method for optical digital data |
JPS6355777A (en) * | 1986-08-26 | 1988-03-10 | Canon Inc | Information recording and reproducing device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009301705A (en) * | 1995-06-29 | 2009-12-24 | Lg Electronics Inc | Recording medium and information reproducing method |
Also Published As
Publication number | Publication date |
---|---|
JP2506121B2 (en) | 1996-06-12 |
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