JPH0437485B2 - - Google Patents
Info
- Publication number
- JPH0437485B2 JPH0437485B2 JP62251990A JP25199087A JPH0437485B2 JP H0437485 B2 JPH0437485 B2 JP H0437485B2 JP 62251990 A JP62251990 A JP 62251990A JP 25199087 A JP25199087 A JP 25199087A JP H0437485 B2 JPH0437485 B2 JP H0437485B2
- Authority
- JP
- Japan
- Prior art keywords
- mark
- track
- optical
- optical card
- detection
- 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.)
- Expired - Lifetime
Links
- 230000003287 optical effect Effects 0.000 claims description 58
- 238000001514 detection method Methods 0.000 claims description 30
- 238000000605 extraction Methods 0.000 claims description 8
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 10
- 238000006073 displacement reaction Methods 0.000 description 10
- 230000035945 sensitivity Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
- G11B7/0033—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with cards or other card-like flat carriers, e.g. flat sheets of optical film
Landscapes
- Optical Recording Or Reproduction (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62251990A JPH0194534A (ja) | 1987-10-06 | 1987-10-06 | 光カードの読取装置 |
PCT/JP1988/001020 WO1989003576A1 (fr) | 1987-10-06 | 1988-10-06 | Dispositif de lecture d'une carte optique |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62251990A JPH0194534A (ja) | 1987-10-06 | 1987-10-06 | 光カードの読取装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0194534A JPH0194534A (ja) | 1989-04-13 |
JPH0437485B2 true JPH0437485B2 (fr) | 1992-06-19 |
Family
ID=17231010
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62251990A Granted JPH0194534A (ja) | 1987-10-06 | 1987-10-06 | 光カードの読取装置 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPH0194534A (fr) |
WO (1) | WO1989003576A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1984000642A1 (fr) * | 1982-07-27 | 1984-02-16 | Gould Inc | Pile etanche au nickel-zinc |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61168130A (ja) * | 1985-01-21 | 1986-07-29 | Sony Corp | 光学カ−ドの読み取り装置 |
JPS61175943A (ja) * | 1985-01-29 | 1986-08-07 | Sony Corp | 光学カ−ド |
-
1987
- 1987-10-06 JP JP62251990A patent/JPH0194534A/ja active Granted
-
1988
- 1988-10-06 WO PCT/JP1988/001020 patent/WO1989003576A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
JPH0194534A (ja) | 1989-04-13 |
WO1989003576A1 (fr) | 1989-04-20 |
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