JPH0421250B2 - - Google Patents
Info
- Publication number
- JPH0421250B2 JPH0421250B2 JP60194120A JP19412085A JPH0421250B2 JP H0421250 B2 JPH0421250 B2 JP H0421250B2 JP 60194120 A JP60194120 A JP 60194120A JP 19412085 A JP19412085 A JP 19412085A JP H0421250 B2 JPH0421250 B2 JP H0421250B2
- Authority
- JP
- Japan
- Prior art keywords
- pulse width
- signal
- laser beam
- pulse
- recording
- 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 23
- 238000003708 edge detection Methods 0.000 claims description 18
- 230000000630 rising effect Effects 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 7
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 230000003111 delayed effect Effects 0.000 description 10
- 230000001934 delay Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60194120A JPS6254830A (ja) | 1985-09-02 | 1985-09-02 | 光デイスク記録再生装置 |
EP86112016A EP0213623B1 (fr) | 1985-09-02 | 1986-08-30 | Appareil de reproduction à disques optiques |
DE3650466T DE3650466T2 (de) | 1985-09-02 | 1986-08-30 | Wiedergabegerät für optische Platten |
US06/902,593 US4788674A (en) | 1985-09-02 | 1986-09-02 | Optical disc record reproducing apparatus |
CA000517307A CA1264085A (fr) | 1985-09-02 | 1986-09-02 | Lecteur de disques optiques |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60194120A JPS6254830A (ja) | 1985-09-02 | 1985-09-02 | 光デイスク記録再生装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6254830A JPS6254830A (ja) | 1987-03-10 |
JPH0421250B2 true JPH0421250B2 (fr) | 1992-04-09 |
Family
ID=16319247
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60194120A Granted JPS6254830A (ja) | 1985-09-02 | 1985-09-02 | 光デイスク記録再生装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6254830A (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63271724A (ja) * | 1987-04-28 | 1988-11-09 | Sharp Corp | 記録再生装置 |
JP2650357B2 (ja) * | 1988-09-30 | 1997-09-03 | 松下電器産業株式会社 | 光学情報記録部材の記録方法 |
JP2589817B2 (ja) * | 1989-08-02 | 1997-03-12 | シャープ株式会社 | 光メモリ用記録再生装置 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61239441A (ja) * | 1985-04-16 | 1986-10-24 | Olympus Optical Co Ltd | 光学的記録再生装置 |
-
1985
- 1985-09-02 JP JP60194120A patent/JPS6254830A/ja active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61239441A (ja) * | 1985-04-16 | 1986-10-24 | Olympus Optical Co Ltd | 光学的記録再生装置 |
Also Published As
Publication number | Publication date |
---|---|
JPS6254830A (ja) | 1987-03-10 |
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