JPS63149459U - - Google Patents
Info
- Publication number
- JPS63149459U JPS63149459U JP4283287U JP4283287U JPS63149459U JP S63149459 U JPS63149459 U JP S63149459U JP 4283287 U JP4283287 U JP 4283287U JP 4283287 U JP4283287 U JP 4283287U JP S63149459 U JPS63149459 U JP S63149459U
- Authority
- JP
- Japan
- Prior art keywords
- optical disk
- preformatted
- preformatted area
- area detection
- inspection device
- 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
- 230000003287 optical effect Effects 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
第１図および第２図は本考案の光デイスク検査
装置の一実施例を示す構成図、第３図〜第５図は
従来の光デイスク検査装置の一例を示す構成図、
第６図は一般的なプリフオーマツト付光デイスク
の形態を示す斜視図である。
１……光デイスク、１１……プリフオーマツト
領域、２……スピンドルモータ、２１……パルス
エンコーダ、３……測定ヘツド、３１……レーザ
光源、３２……集光レンズ、３３……ビームスプ
リツタ、３４……受光素子、４……測定回路、４
１……比較回路、５……プリフオーマツト領域検
出回路、６……アンド回路（禁止回路）。
1 and 2 are block diagrams showing an embodiment of the optical disk inspection device of the present invention, and FIGS. 3 to 5 are block diagrams showing an example of a conventional optical disk inspection device,
FIG. 6 is a perspective view showing the form of a general preformatted optical disk. DESCRIPTION OF SYMBOLS 1... Optical disk, 11... Preformat area, 2... Spindle motor, 21... Pulse encoder, 3... Measurement head, 31... Laser light source, 32... Condensing lens, 33... Beam splitter, 34... Light receiving element, 4... Measurement circuit, 4
1... Comparison circuit, 5... Preformat area detection circuit, 6... AND circuit (inhibition circuit).
Claims (1)
もに反射光の強さに比例した出力信号を利用して
光デイスクの記録特性に関する各種の測定を行な
うようにした光デイスク検査装置において、光デ
イスクの回転角に比例した信号を発生するパルス
エンコーダと、このパルスエンコーダの出力から
プリフオーマツト付光デイスクにおけるプリフオ
ーマツト領域の位置に同期したプリフオーマツト
領域検出信号を発生するプリフオーマツト領域検
出回路と、このプリフオーマツト領域検出信号を
受けプリフオーマツト領域に対応した期間は測定
対象となる信号の変化を禁止する禁止回路とを具
備してなる光デイスク検査装置。 In an optical disk inspection device that irradiates the recording surface of an optical disk with a laser beam and uses an output signal proportional to the intensity of the reflected light to perform various measurements regarding the recording characteristics of the optical disk, the rotation of the optical disk is A pulse encoder that generates a signal proportional to the angle; a preformatted area detection circuit that generates a preformatted area detection signal synchronized with the position of the preformatted area on the preformatted optical disk from the output of the pulse encoder; and a preformatted area detection circuit that receives the preformatted area detection signal. An optical disk inspection device comprising: a prohibition circuit that prohibits changes in a signal to be measured during a period corresponding to a preformatted area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4283287U JPS63149459U (en) | 1987-03-24 | 1987-03-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4283287U JPS63149459U (en) | 1987-03-24 | 1987-03-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63149459U true JPS63149459U (en) | 1988-10-03 |
Family
ID=30859125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4283287U Pending JPS63149459U (en) | 1987-03-24 | 1987-03-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63149459U (en) |
-
1987
- 1987-03-24 JP JP4283287U patent/JPS63149459U/ja active Pending
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