JPH0384915U - - Google Patents
Info
- Publication number
- JPH0384915U JPH0384915U JP14320689U JP14320689U JPH0384915U JP H0384915 U JPH0384915 U JP H0384915U JP 14320689 U JP14320689 U JP 14320689U JP 14320689 U JP14320689 U JP 14320689U JP H0384915 U JPH0384915 U JP H0384915U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- track
- focus
- signal input
- optical disk
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
Landscapes
- Testing Of Optical Devices Or Fibers (AREA)
- Optical Recording Or Reproduction (AREA)
Description
第１図は本考案の一実施例を示すブロツク図で
ある。
１……フオーカス二分割センサ、２……フオー
カスエラー検出回路、３……フオーカスエラーモ
ニタ回路、４……フオーカスサーボ回路、５……
フオーカスコイル駆動回路、６……フオーカスコ
イル、７……フオーカス外乱信号入力回路、８…
…トラツク二分割センサ、９……トラツクエラー
検出回路、１０……トラツクエラーモニタ回路、
１１……トラツクサーボ回路、１２……トラツク
コイル駆動回路、１３……トラツクコイル、１４
……トラツク外乱信号入力回路、１５……特性検
査手段。
FIG. 1 is a block diagram showing one embodiment of the present invention. 1...Focus two-part sensor, 2...Focus error detection circuit, 3...Focus error monitor circuit, 4...Focus servo circuit, 5...
Focus coil drive circuit, 6... Focus coil, 7... Focus disturbance signal input circuit, 8...
...Track two-split sensor, 9...Track error detection circuit, 10...Track error monitor circuit,
11... Track servo circuit, 12... Track coil drive circuit, 13... Track coil, 14
. . . Track disturbance signal input circuit, 15 . . . Characteristic inspection means.
Claims (1)
と、フオーカスエラーモニター回路と、フオーカ
ス外乱信号入力回路と、フオーカスサーボ回路と
、フオーカスコイル駆動回路と、トラツクエラー
検出回路と、トラツクエラーモニター回路と、ト
ラツク外乱信号入力回路と、トラツクサーボ回路
と、トラツクコイル駆動回路と、前記フオーカス
外乱信号入力回路とトラツク外乱信号入力回路へ
可変周波数の信号を入力しフオーカスエラー信号
出力とトラツクエラー信号出力とから光デイスク
ヘツドの周波数特性を検査する特性検査手段とを
有する光デイスクヘツド特性試験機。 A focus error detection circuit of an optical disk head, a focus error monitor circuit, a focus disturbance signal input circuit, a focus servo circuit, a focus coil drive circuit, a track error detection circuit, a track error monitor circuit, A variable frequency signal is input to a track disturbance signal input circuit, a track servo circuit, a track coil drive circuit, the focus disturbance signal input circuit and the track disturbance signal input circuit, and a focus error signal output and a track error signal output are output. 1. An optical disk head characteristic testing machine comprising a characteristic testing means for testing the frequency characteristics of an optical disk head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14320689U JPH0384915U (en) | 1989-12-11 | 1989-12-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14320689U JPH0384915U (en) | 1989-12-11 | 1989-12-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0384915U true JPH0384915U (en) | 1991-08-28 |
Family
ID=31690001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14320689U Pending JPH0384915U (en) | 1989-12-11 | 1989-12-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0384915U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006175028A (en) * | 2004-12-22 | 2006-07-06 | Matsushita Electric Works Ltd | Comb |
-
1989
- 1989-12-11 JP JP14320689U patent/JPH0384915U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006175028A (en) * | 2004-12-22 | 2006-07-06 | Matsushita Electric Works Ltd | Comb |
| JP4529675B2 (en) * | 2004-12-22 | 2010-08-25 | パナソニック電工株式会社 | Comb |
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