JPS6311723U - - Google Patents

Info

Publication number
JPS6311723U
JPS6311723U JP10169686U JP10169686U JPS6311723U JP S6311723 U JPS6311723 U JP S6311723U JP 10169686 U JP10169686 U JP 10169686U JP 10169686 U JP10169686 U JP 10169686U JP S6311723 U JPS6311723 U JP S6311723U
Authority
JP
Japan
Prior art keywords
control circuit
disk
reproducing apparatus
recording
pickup 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
Application number
JP10169686U
Other languages
Japanese (ja)
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 JP10169686U priority Critical patent/JPS6311723U/ja
Publication of JPS6311723U publication Critical patent/JPS6311723U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)

Description

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

第１図は本考案実施例の光デイスク記録再生装
置の制御装置を示すブロツク図、第２図は光デイ
スク記録再生装置を示すブロツク図、第３図は光
デイスク記録再生装置のレーザードライブ回路の
具体的構成を示すブロツク図、第４図は従来の光
デイスク記録再生装置の制御装置を示すブロツク
図、第５図は光デイスク記録装置の動作を説明す
るための信号波形図である。 １０ａ，１０ｂ，１０ｃ，１０ｄ……フオトデ
イテクタ、１６……光ピツクアツプ装置、３１…
…トラツキング誤差検出回路、３２……フオーカ
ス誤差検出回路、３３……トラツキング駆動回路
、３４……フオーカス駆動回路、３７……制御回
路、３５ａ，３５ｂ，３５ｃ，３５ｄ……Ｉ／Ｖ
変換回路、４５……加算器、４６……コンパレー
タ。 Fig. 1 is a block diagram showing a control device for an optical disc recording/reproducing apparatus according to an embodiment of the present invention, Fig. 2 is a block diagram showing an optical disc recording/reproducing apparatus, and Fig. 3 is a block diagram showing a laser drive circuit of the optical disc recording/reproducing apparatus. FIG. 4 is a block diagram showing a conventional optical disk recording/reproducing apparatus control device, and FIG. 5 is a signal waveform diagram for explaining the operation of the optical disk recording apparatus. 10a, 10b, 10c, 10d...photo detector, 16...optical pickup device, 31...
...Tracking error detection circuit, 32...Focus error detection circuit, 33...Tracking drive circuit, 34...Focus drive circuit, 37...Control circuit, 35a, 35b, 35c, 35d...I/V
Conversion circuit, 45...adder, 46...comparator.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 光を介してデイスクに対する信号記録、再生を
行ない、デイスクからの反射光を検出する光ピツ
クアツプ装置を備えると共にこの光ピツクアツプ
装置のトラツキング制御回路及びフオーカス制御
回路を有する光デイスク記録再生装置において、
デイスクへの信号記録時の全反射光量を検出し、
この検出値が予め設定された所定値を越えたとき
上記トラツキング制御回路あるいはフオーカス制
御回路の少なくとも一方のゲインを下げるように
動作する制御手段を備えたことを特徴とする光デ
イスク記録再生装置。 An optical disk recording and reproducing apparatus includes an optical pickup device that records and reproduces signals on a disk via light and detects reflected light from the disk, and also has a tracking control circuit and a focus control circuit of the optical pickup device,
Detects the total amount of reflected light when recording signals to the disk,
An optical disk recording and reproducing apparatus comprising: a control means that operates to lower the gain of at least one of the tracking control circuit or the focus control circuit when the detected value exceeds a predetermined value.
JP10169686U 1986-07-01 1986-07-01 Pending JPS6311723U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10169686U JPS6311723U (en) 1986-07-01 1986-07-01

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10169686U JPS6311723U (en) 1986-07-01 1986-07-01

Publications (1)

Publication Number Publication Date
JPS6311723U true JPS6311723U (en) 1988-01-26

Family

ID=30972662

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10169686U Pending JPS6311723U (en) 1986-07-01 1986-07-01

Country Status (1)

Country Link
JP (1) JPS6311723U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59146451A (en) * 1984-02-02 1984-08-22 Matsushita Electric Ind Co Ltd Generator for focus control signal of luminous flux
JPS6132224A (en) * 1984-07-23 1986-02-14 Hitachi Ltd Optical information recording and reproducing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59146451A (en) * 1984-02-02 1984-08-22 Matsushita Electric Ind Co Ltd Generator for focus control signal of luminous flux
JPS6132224A (en) * 1984-07-23 1986-02-14 Hitachi Ltd Optical information recording and reproducing device

Similar Documents

Publication Publication Date Title
US4630252A (en) Control apparatus for optical disc player for locating blank tracks
JPS63109366U (en)
JPH0447893B2 (en)
JPS6242347B2 (en)
JPS6311723U (en)
CA2031565A1 (en) Optical disc apparatus
JPS6128112U (en) Optical disk recording/playback device
JPH0110753Y2 (en)
JPH0770061B2 (en) Optical disc playback device
JPH0445315U (en)
JPH0289618U (en)
JPS63181157U (en)
JPS634287Y2 (en)
JPH0454022U (en)
JP2542077Y2 (en) Information recording / reproducing device
JPS6031728U (en) Tracking servo device
JPH059854B2 (en)
JPS62168112U (en)
JPS62106356U (en)
JPS6161621U (en)
JPH03268228A (en) Optical disk device
JPH0226126U (en)
JPH01124925U (en)
JPH0370295B2 (en)
JPS63193221U (en)