JPH0246971U - - Google Patents
Info
- Publication number
- JPH0246971U JPH0246971U JP12300388U JP12300388U JPH0246971U JP H0246971 U JPH0246971 U JP H0246971U JP 12300388 U JP12300388 U JP 12300388U JP 12300388 U JP12300388 U JP 12300388U JP H0246971 U JPH0246971 U JP H0246971U
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- tracking error
- error signal
- information recording
- shaped information
- 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
- 230000003111 delayed effect Effects 0.000 claims description 8
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
Landscapes
- Moving Of The Head To Find And Align With The Track (AREA)
Description
第１図は本考案になる円盤状情報記録媒体再生
装置の要部であるトラツキングサーボループの一
実施例の構成図、第２図はデイスクの１回転周期
当りのトラツキングエラー信号波形図、第３図は
映像信号及びトラツキング信号ｆｐ１，ｆｐ２の
記録形態を示す波形図、第４図は情報信号記録ト
ラツクの形態及びトラツキング信号ｆｐ１，ｆｐ
２の各再生信号波形を示す図である。
１……トラツキングサーボループ、２……再生
針、２ａ……センサ、２ｂ……トラツキングコイ
ル、３……プリアンプ、４……ローパスフイルタ
、５……自動利得制御回路（ＡＧＣ回路）、６，
７……ｆｐ１，ｆｐ２アンプ、８，９……ｆｐ１
，ｆｐ２検波回路、１０，１４……スイツチ回路
、１１……減算回路、１３……メモリ。
FIG. 1 is a configuration diagram of an embodiment of a tracking servo loop, which is a main part of the disk-shaped information recording medium reproducing apparatus according to the present invention, and FIG. 2 is a tracking error signal waveform diagram per one rotation period of the disk. FIG. 3 is a waveform diagram showing the recording format of the video signal and tracking signals fp 1 , fp 2 , and FIG. 4 is a waveform diagram showing the format of the information signal recording track and the tracking signals fp 1 , fp
2 is a diagram showing each reproduced signal waveform of No. 2. FIG. 1... Tracking servo loop, 2... Regeneration needle, 2a... Sensor, 2b... Tracking coil, 3... Preamplifier, 4... Low pass filter, 5... Automatic gain control circuit (AGC circuit), 6 ，
7...fp 1 , fp 2 amplifier, 8, 9...fp 1
, fp 2 detection circuit, 10, 14... switch circuit, 11... subtraction circuit, 13... memory.
補正 平１．１．３１
実用新案登録請求の範囲を次のように補正する
。Amendment 1.31.1.31 The scope of claims for utility model registration is amended as follows.
【実用新案登録請求の範囲】
情報信号が記録された円盤状情報記録媒体を再
生する円盤状情報記録媒体再生装置であつて、
前記円盤状情報記録媒体を再生して得たトラツ
キングエラー信号を生成出力するトラツキングエ
ラー信号生成手段と、
このトラツキングエラー信号生成手段から供給
された前記トラツキングエラー信号を、前記円盤
状情報記録媒体の１周分記憶し、前記トラツキン
グエラー信号生成手段から出力される前記トラツ
キングエラー信号に対して前記円盤状情報記録媒
体の１周分遅延した遅延トラツキングエラー信号
を出力する記憶手段と、
前記トラツキングエラー信号及び前記遅延トラ
ツキングエラー信号が供給され、ドロツプアウト
検出信号が印加されると、前記トラツキングエラ
ー信号から前記遅延トラツキングエラー信号を切
換出力する切換手段と、
この切換手段から得た切換信号に基づいて、前
記円盤状情報記録媒体のトラツキング方向に対す
る駆動制御を受けて前記円盤状情報記録媒体を再
生する再生手段とからなるトラツキングサーボル
ープとを有する構成としたことを特徴とする円盤
状情報記録媒体再生装置。[Claims for Utility Model Registration] A disc -shaped information recording medium reproducing device for reproducing a disc-shaped information recording medium on which an information signal is recorded, the tracking error obtained by reproducing the disc-shaped information recording medium. tracking error signal generation means for generating and outputting a signal; and storing the tracking error signal supplied from the tracking error signal generation means for one revolution of the disc-shaped information recording medium to generate the tracking error signal. storage means for outputting a delayed tracking error signal that is delayed by one revolution of the disc-shaped information recording medium with respect to the tracking error signal output from the means; and the tracking error signal and the delayed tracking error signal are switching means for switching and outputting the delayed tracking error signal from the tracking error signal when the dropout detection signal is applied; and based on the switching signal obtained from the switching means, the disc-shaped information recording medium 1. A disc-shaped information recording medium reproducing apparatus comprising: a tracking servo loop comprising a reproducing means for reproducing the disc-shaped information recording medium under drive control in a tracking direction of the disc-shaped information recording medium.
Claims (1)
に、間欠的に記録された２つのトラツキング信号
を有する円盤状情報記録媒体を再生する円盤状情
報記録媒体再生装置であつて、 前記円盤状情報記録媒体を再生して得た再生信
号から分離された前記２つのトラツキング信号の
差分信号であるトラツキングエラー信号を生成出
力するトラツキングエラー信号生成手段と、 このトラツキングエラー信号生成手段から供給
された前記トラツキングエラー信号を、前記円盤
状情報記録媒体の１周分記憶し、前記トラツキン
グエラー信号生成手段から出力される前記トラツ
キングエラー信号に対して前記円盤状情報記録媒
体の１周分遅延した遅延トラツキングエラー信号
を出力する記憶手段と、 前記トラツキングエラー信号及び前記遅延トラ
ツキングエラー信号が供給され、ドロツプアウト
検出信号が印加されると、前記トラツキングエラ
ー信号から前記遅延トラツキングエラー信号を切
換出力する切換手段と、 この切換手段から得た切換信号に基づいて、前
記円盤状情報記録媒体のトラツキング方向に対す
る駆動制御を受けて前記円盤状情報記録媒体を再
生する再生手段とからなるトラツキングサーボル
ープとを有する構成としたことを特徴とする円盤
状情報記録媒体再生装置。[Claims for Utility Model Registration] A disc-shaped information recording medium reproducing device that reproduces a disc-shaped information recording medium having two tracking signals intermittently recorded on both sides of an information signal track on which an information signal is recorded. a tracking error signal generating means for generating and outputting a tracking error signal that is a difference signal between the two tracking signals separated from the reproduced signal obtained by reproducing the disk-shaped information recording medium; The tracking error signal supplied from the signal generation means is stored for one revolution of the disk-shaped information recording medium, and the disk-shaped information is applied to the tracking error signal output from the tracking error signal generation means. storage means for outputting a delayed tracking error signal delayed by one rotation of the recording medium; when the tracking error signal and the delayed tracking error signal are supplied and a dropout detection signal is applied, the tracking error signal is outputted; a switching means for switching and outputting the delayed tracking error signal from the switching means; and based on the switching signal obtained from the switching means, drive control of the tracking direction of the disc-shaped information recording medium is performed to reproduce the disc-shaped information recording medium. 1. A disk-shaped information recording medium reproducing apparatus, characterized in that the disc-shaped information recording medium reproducing apparatus is configured to have a tracking servo loop consisting of a reproducing means for reproducing information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12300388U JPH0246971U (en) | 1988-09-20 | 1988-09-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12300388U JPH0246971U (en) | 1988-09-20 | 1988-09-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0246971U true JPH0246971U (en) | 1990-03-30 |
Family
ID=31371459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12300388U Pending JPH0246971U (en) | 1988-09-20 | 1988-09-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0246971U (en) |
-
1988
- 1988-09-20 JP JP12300388U patent/JPH0246971U/ja active Pending
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