JPH03115919U - - Google Patents

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Publication number
JPH03115919U
JPH03115919U JP2144290U JP2144290U JPH03115919U JP H03115919 U JPH03115919 U JP H03115919U JP 2144290 U JP2144290 U JP 2144290U JP 2144290 U JP2144290 U JP 2144290U JP H03115919 U JPH03115919 U JP H03115919U
Authority
JP
Japan
Prior art keywords
optical disk
high frequency
turned
recording
recording waveform
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
Application number
JP2144290U
Other languages
Japanese (ja)
Other versions
JPH087534Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP2144290U priority Critical patent/JPH087534Y2/en
Publication of JPH03115919U publication Critical patent/JPH03115919U/ja
Application granted granted Critical
Publication of JPH087534Y2 publication Critical patent/JPH087534Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案の実施例である光デイスク記
録再生装置の回路を示すブツブロツク図、第２図
は従来の光デイスク記録再生装置のレーザ駆動装
置の例を示すブロツク図である。 １……レーザ光源、２……レーザ駆動回路、３
……変調回路、４……スイツチ、５……高周波モ
ジユール、６……光検出部、７……減算部、８…
…ＣＬＶサーボ、９……スイツチ、１０……モー
ド指令部。 FIG. 1 is a block diagram showing a circuit of an optical disk recording/reproducing apparatus according to an embodiment of this invention, and FIG. 2 is a block diagram showing an example of a laser driving device of a conventional optical disk recording/reproducing apparatus. 1... Laser light source, 2... Laser drive circuit, 3
... Modulation circuit, 4 ... Switch, 5 ... High frequency module, 6 ... Photodetection section, 7 ... Subtraction section, 8 ...
...CLV servo, 9... switch, 10... mode command section.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 光デイスクのウオブル信号によりＣＬＶサーボ
をかける光デイスク記録再生装置において、レー
ザ光源の光パワーに高周波を重畳する高周波モジ
ユールを記録波形のＨでオフとしＬでオンとする
ことを特徴とする光デイスク記録再生装置。 An optical disk recording/reproducing device that applies CLV servo based on a wobble signal of an optical disk, characterized in that a high frequency module that superimposes a high frequency on the optical power of a laser light source is turned off at H of the recording waveform and turned on at L of the recording waveform. playback device.
JP2144290U 1990-03-05 1990-03-05 Optical disk recording and playback device Expired - Lifetime JPH087534Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2144290U JPH087534Y2 (en) 1990-03-05 1990-03-05 Optical disk recording and playback device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2144290U JPH087534Y2 (en) 1990-03-05 1990-03-05 Optical disk recording and playback device

Publications (2)

Publication Number Publication Date
JPH03115919U true JPH03115919U (en) 1991-12-02
JPH087534Y2 JPH087534Y2 (en) 1996-03-04

Family

ID=31524490

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2144290U Expired - Lifetime JPH087534Y2 (en) 1990-03-05 1990-03-05 Optical disk recording and playback device

Country Status (1)

Country Link
JP (1) JPH087534Y2 (en)

Also Published As

Publication number Publication date
JPH087534Y2 (en) 1996-03-04

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term