JPS62168112U - - Google Patents
Info
- Publication number
- JPS62168112U JPS62168112U JP5607486U JP5607486U JPS62168112U JP S62168112 U JPS62168112 U JP S62168112U JP 5607486 U JP5607486 U JP 5607486U JP 5607486 U JP5607486 U JP 5607486U JP S62168112 U JPS62168112 U JP S62168112U
- Authority
- JP
- Japan
- Prior art keywords
- comparator
- reflected light
- recording
- inhibiting
- recordable
- 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.)
- Pending
Links
- 230000002401 inhibitory effect Effects 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 5
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
Description
第１図は、本考案による記録禁止装置の実施例
を示すブロツク図、第２図は、光ピツクアツプお
よびその周辺回路を示すブロツク図、第３図は、
実施例の説明に供する図、第４図は、レーザーダ
イオードの駆動回路のブロツク図、第５図は、第
４図の回路の動作を説明するための線図、第６図
は、本考案による記録禁止装置の動作を示す流れ
図である。
１―ホトセンサ、２―電流電圧変換器、３―加
算器、４―ローパスフイルタ、５―比較器、６，
７―引き算器、８，９―駆動装置、１０，１１―
利得切り換え器、２０―記録信号発生回路、２１
…再生基準電圧発生回路、２２―加算器、２３―
レーザーダイオード制御回路、２４―レーザーダ
イオード、２５―ホトダイオード、２６―電流電
圧変換器。
FIG. 1 is a block diagram showing an embodiment of the recording inhibiting device according to the present invention, FIG. 2 is a block diagram showing an optical pickup and its peripheral circuits, and FIG.
4 is a block diagram of a laser diode drive circuit, FIG. 5 is a diagram for explaining the operation of the circuit of FIG. 4, and FIG. 6 is a diagram for explaining the operation of the circuit of FIG. 3 is a flowchart showing the operation of the recording inhibiting device. 1-Photo sensor, 2-Current voltage converter, 3-Adder, 4-Low pass filter, 5-Comparator, 6,
7-Subtractor, 8,9-Drive device, 10,11-
Gain switcher, 20-recording signal generation circuit, 21
...Reproduction reference voltage generation circuit, 22-adder, 23-
Laser diode control circuit, 24-laser diode, 25-photodiode, 26-current-voltage converter.
Claims (1)
オーカスサーボ装置、デイスク駆動装置および信
号処理回路を有する記録再生可能な光デイスク装
置において、記録再生用レーザーの反射光量を検
出する反射光検出器、反射光検出器の出力を判別
する比較器、および比較器の出力に従つて記録を
禁止する禁止手段を備えたことを特徴とする、記
録再生可能な光デイスク装置における記録禁止装
置。 A reflected light detector and a reflected light detector for detecting the amount of reflected light of a recording and reproducing laser in a recordable and reproducible optical disk device that has an optical pickup, a tracking servo device, a focus servo device, a disk drive device, and a signal processing circuit. 1. A recording inhibiting device in a recordable/reproducible optical disk device, comprising: a comparator for determining the output of the comparator; and inhibiting means for inhibiting recording according to the output of the comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5607486U JPS62168112U (en) | 1986-04-16 | 1986-04-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5607486U JPS62168112U (en) | 1986-04-16 | 1986-04-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62168112U true JPS62168112U (en) | 1987-10-24 |
Family
ID=30884564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5607486U Pending JPS62168112U (en) | 1986-04-16 | 1986-04-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62168112U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60167127A (en) * | 1984-02-10 | 1985-08-30 | Hitachi Ltd | Recording and reproducing device of optical information |
| JPS60251557A (en) * | 1984-05-28 | 1985-12-12 | Matsushita Electric Ind Co Ltd | Optical recorder and reproducing device |
-
1986
- 1986-04-16 JP JP5607486U patent/JPS62168112U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60167127A (en) * | 1984-02-10 | 1985-08-30 | Hitachi Ltd | Recording and reproducing device of optical information |
| JPS60251557A (en) * | 1984-05-28 | 1985-12-12 | Matsushita Electric Ind Co Ltd | Optical recorder and reproducing device |
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