JPS6145725U - Optical information recording and reproducing device - Google Patents
Optical information recording and reproducing deviceInfo
- Publication number
- JPS6145725U JPS6145725U JP12843684U JP12843684U JPS6145725U JP S6145725 U JPS6145725 U JP S6145725U JP 12843684 U JP12843684 U JP 12843684U JP 12843684 U JP12843684 U JP 12843684U JP S6145725 U JPS6145725 U JP S6145725U
- Authority
- JP
- Japan
- Prior art keywords
- recording
- recording medium
- optical information
- information
- reproducing
- 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
- Optical Recording Or Reproduction (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案のフォーカスサーポ装置のブロツク図、
第２図はその他の実施のブロック図、第３図はその特性
図、第４図はスポットとディスクとの関係を示す斜視図
である。
１・・・・・・受光素子、６，７・・・・・・加算器、
８・・・・・・差動増幅器、９・・・・・・利得制御回
路、１０・・・・・・駆動回路、１１・・・・・・対物
レン、１２・・・・・・判別回路、１−３・・・・・・
直流電圧発生器。Figure 1 is a block diagram of the focus servo device of the present invention.
FIG. 2 is a block diagram of another implementation, FIG. 3 is a characteristic diagram thereof, and FIG. 4 is a perspective view showing the relationship between the spot and the disk. 1... Light receiving element, 6, 7... Adder,
8...Differential amplifier, 9...Gain control circuit, 10...Drive circuit, 11...Objective lens, 12...Discrimination Circuit, 1-3...
DC voltage generator.
Claims (2)
ォーマットで情報が記録再生される第２の記録媒体とに
、該情報を光学的に記録又は再生する光学的情報記録再
生装置であって、該第１の記録媒体と第２の記録媒体に
情報を記録再生する際フォーカスサーボされる対物レン
ズの焦点設定位置を、該第１の記録媒体に記録再生する
場合と該第２の記録媒体に記録再生する場合とにおいて
異ならせるようにしたことを特徴とする光学的情報記録
再生装置。(1) Optical information recording and reproduction that optically records or reproduces information on a first recording medium and a second recording medium on which information is recorded and reproduced in a format different from that of the first recording medium. The apparatus includes a focus setting position of an objective lens that is focus servoed when recording and reproducing information on the first recording medium and a second recording medium, and when recording and reproducing information on the first recording medium and the second recording medium. 1. An optical information recording/reproducing apparatus characterized in that the recording/reproducing apparatus differs between recording and reproducing on two recording media.
あり、該ディスクの厚さ、外径、重量、反射率、中心孔
径のうち少なくともいずれか１つの差異を検出し、該フ
ォーカスサーボに用いられる差動増幅器の入力又は出力
のうち少なくともいずれかを一方を該検出出力によって
自割的に制御するようにしたことを特徴とする実用新案
登録請求の範囲第１項の光学的情報記録再生装置。(2) The first recording medium and the second recording medium are disks, and a difference in at least one of the thickness, outer diameter, weight, reflectance, and center hole diameter of the disks is detected, and the focus Optical information according to claim 1 of the utility model registration claim, characterized in that at least one of the input and output of a differential amplifier used in a servo is automatically controlled by the detection output. Recording and playback device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984128436U JPH0749619Y2 (en) | 1984-08-24 | 1984-08-24 | Optical information reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984128436U JPH0749619Y2 (en) | 1984-08-24 | 1984-08-24 | Optical information reproducing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6145725U true JPS6145725U (en) | 1986-03-26 |
| JPH0749619Y2 JPH0749619Y2 (en) | 1995-11-13 |
Family
ID=30687064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984128436U Expired - Lifetime JPH0749619Y2 (en) | 1984-08-24 | 1984-08-24 | Optical information reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0749619Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56148747A (en) * | 1980-04-18 | 1981-11-18 | Mitsubishi Electric Corp | Focus controller |
-
1984
- 1984-08-24 JP JP1984128436U patent/JPH0749619Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56148747A (en) * | 1980-04-18 | 1981-11-18 | Mitsubishi Electric Corp | Focus controller |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0749619Y2 (en) | 1995-11-13 |
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