JPS63209067A - Disk reproducing device - Google Patents

Disk reproducing device

Info

Publication number
JPS63209067A
JPS63209067A JP4206887A JP4206887A JPS63209067A JP S63209067 A JPS63209067 A JP S63209067A JP 4206887 A JP4206887 A JP 4206887A JP 4206887 A JP4206887 A JP 4206887A JP S63209067 A JPS63209067 A JP S63209067A
Authority
JP
Japan
Prior art keywords
disk
motor driver
pickup
disk motor
pulse signal
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
JP4206887A
Other languages
Japanese (ja)
Other versions
JPH0432466B2 (en
Inventor
Hiroyuki Konishi
弘幸 小西
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Funai Electric Co Ltd
Original Assignee
Funai Electric Co Ltd
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 by Funai Electric Co Ltd filed Critical Funai Electric Co Ltd
Priority to JP4206887A priority Critical patent/JPS63209067A/en
Publication of JPS63209067A publication Critical patent/JPS63209067A/en
Publication of JPH0432466B2 publication Critical patent/JPH0432466B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Rotational Drive Of Disk (AREA)

Abstract

PURPOSE:To prevent the drop of a power source voltage and to properly execute a track investigation by using a pulse signal which controls to move a pickup so as to lower the input level of a disk motor driver. CONSTITUTION:A transistor 5, which is also a means for lowering the input level of the disk motor driver 3, is provided and the base of the transistor 5 is connected to a control terminal 7 which inputs the pulse signal 4 which controls to move the pickup. When the track investigation of a disk is executed, the transistor 5 is made to be connected and actuated based on the L level output of the pulse signal 4, so that the input level of the disk motor driver 3 can be lowered. Thus, the current consumption of the disk motor driver can be easily reduced and the lowering of the power source voltage can be evaded, and also the lowering of the focusing function of the pickup can be prevented, so that the track investigation of the disk can be properly executed.

Description

【発明の詳細な説明】 「産業上の利用分野」 本発明はターンテーブルにディスクを載置させ、ディス
クの軸芯に対し放射線方向にピックアップを移動させ、
ディスクに記録されている情報(音楽)を読取って再生
するディスク再生装置に関する。
Detailed Description of the Invention "Industrial Application Field" The present invention places a disk on a turntable, moves a pickup in a radial direction with respect to the axis of the disk,
The present invention relates to a disc playback device that reads and plays back information (music) recorded on a disc.

「従来の技術」 従来、ディスクに形成された複数トラックの希望する位
置にピックアップを移動させ、希望する情報を読取って
再生する技術があった。
"Prior Art" Conventionally, there has been a technology in which a pickup is moved to a desired position on a plurality of tracks formed on a disc, and desired information is read and reproduced.

「発明が解決しようとする問題点」 前記従来技術は、再生動作時における消費電流(約40
0ミリアンペア)に比べ、トラックの探査を行うときの
消費電流(約700〜800ミリアンペア)が極めて大
きくなるから、電池(バッテリ5を電源とするポータプ
ル型において、例えばディスクに記録した音楽を全て再
生した後、ディスク外周から内周の1トラツクを探査す
るとき、消費電流の増大により電圧が降下し、ピックア
ップのフォーカス機能を低下させ、トラック探査を適正
に行い得ない等の問題があった。
"Problems to be Solved by the Invention" The above-mentioned conventional technology has a problem in that the current consumption during playback operation (approximately 40
Since the current consumption (approximately 700 to 800 milliamps) when searching for a track is extremely large compared to the battery (0 milliampere), the current consumption (approximately 700 to 800 milliamperes) is extremely large. Thereafter, when one track from the outer circumference to the inner circumference of the disk is searched, the voltage drops due to the increase in current consumption, which deteriorates the focusing function of the pickup and makes it impossible to perform track search properly.

r問題点を解決するための手段」 然るに、本発明は、ディスクを回転させるディスクモー
タを備え、ディスクモータドライバを介して前記ディス
クモータを駆動制御する装置において、ピックアップを
移動制御するパルス信号を用いてディスクモータドライ
バの入力レベルを低下させる手段を設け、ディスクのト
ラック探査を行うときにディスクモータドライバの入力
レベルを低下させるべく構成したことを特徴とするもの
である。
However, the present invention provides an apparatus that includes a disk motor that rotates a disk and that drives and controls the disk motor via a disk motor driver, using a pulse signal to control the movement of a pickup. The present invention is characterized in that a means for lowering the input level of the disc motor driver is provided, and the input level of the disc motor driver is lowered when performing a track search on the disc.

「作 用」 従って、トラックの探査を行うときに最も多くの電流を
消費する前記ディスクモータドライバの消費電流を簡単
に低減し得、電源電圧の降下を防いでピックアップのフ
ォーカス機能の低下を阻止し得、ディスクのトラック探
査を適正に行わせ得ると共に、電源として用いる電池の
寿命を著しく延長させ得るものである。
``Function'' Therefore, the current consumption of the disk motor driver, which consumes the most current when searching for a track, can be easily reduced, and a drop in the power supply voltage is prevented, thereby preventing a drop in the focus function of the pickup. In addition, the disk track search can be carried out properly, and the life of the battery used as a power source can be significantly extended.

「実施例」 以下1本発明の実施例を図面に基づいて詳述する0図面
は携帯用のポータプル型ディスク再生装置の要部電気回
路図であり、音楽などの情報を記録した光ディスク(コ
ンパクトディスク)を回転させるディスクモータ(1)
を備え、ディスクモータ(1)を駆動する制御信号を入
力端子(2)に印加したとき、その制御信号に基づいて
作動するディスクモータドライバ(3)を介してディス
クモータ(1)を駆動制御し、ターンテーブルに装着し
たディスクを定速回転させるように構成している。
``Example'' Below, an embodiment of the present invention will be described in detail based on the drawings.The drawing is an electrical circuit diagram of a main part of a portable portable disc playback device. ) to rotate the disc motor (1)
and when a control signal for driving the disk motor (1) is applied to the input terminal (2), the drive of the disk motor (1) is controlled via a disk motor driver (3) that operates based on the control signal. , the disc mounted on the turntable is configured to rotate at a constant speed.

またディスクにレーザー光を照射して情報を読取るピッ
クアップを移動制御するパルス信号(4)を用いて前記
ディスクモータドライバ(3)の入力レベルを低下させ
る手段であるトランジスタ(5)を設け、前記トランジ
スタ(5)のコレクタを接地させ、またトランジスタ(
5)のエミッタをディスクモータドライバ(3)の入力
線(8)に接続させると共に、ピックアップを移動制御
するパルス信号(0を入力させる制御端子(7)に前記
トランジスタ(5)のベースを接続させるもので、前記
パルス信号(4)のHレベル出力(4a)によりピック
アップをディスク外周方向に、またパルス信号(4)(
7)Lレベル出力(4b)によりピックアップをディス
ク内周方向に夫々移動させるように設定していると共に
、前記パルス信号(0のLレベル出力(4b)により前
記トランジスタ(5)を導通作動させ、例えば全ての音
楽の再生が終了し、ピックアップをディスク外周から内
周1トラック位置に移動させるべく、ディスクのトラッ
ク探査を行うとき、前記パルス信号(0のLレベル出力
(4b)に基づいてトランジスタ(5)によりディスク
モータドライバ(3)の入力レベルを低下させるように
構成したものである。
Further, a transistor (5) is provided as means for lowering the input level of the disk motor driver (3) using a pulse signal (4) for controlling the movement of a pickup that reads information by irradiating a laser beam onto the disk. The collector of (5) is grounded, and the transistor (
5) is connected to the input line (8) of the disk motor driver (3), and the base of the transistor (5) is connected to the control terminal (7) for inputting a pulse signal (0) for controlling the movement of the pickup. The H level output (4a) of the pulse signal (4) moves the pickup toward the outer circumference of the disk, and the pulse signal (4) (
7) The L level output (4b) is set to move the pickup toward the inner circumference of the disk, and the transistor (5) is made conductive by the L level output (4b) of the pulse signal (0); For example, when all the music has been played and a track search is performed on the disc in order to move the pickup from the outer periphery of the disc to one track position on the inner periphery, the transistor ( 5), the input level of the disk motor driver (3) is lowered.

本実施例は上記の如く構成するもので、従来、ディスク
再生時の消費電流(400ミリアン(ア)に比べ、トラ
ックの探査を行うときの消費電流(700〜800ミリ
アンペア)が著しく増加していたが、トラックの探査を
行うときに最も多く電流を消費するのはディスクモータ
ドライバ(3)であり、再生時の前記ドライバ(3)の
消費電流(30ミリアンペア)に比べ、トラック探査時
の前記ドライバ(3)の消費電流(390〜540ミリ
アンペア)が急増していたから、ピックアップをディス
ク内周方向に移動させるパルス信号(0を用いて前記ド
ライバ(3)の入力レベルを低下(約16dB)させる
ことにより、トラックの探査時における消費電流を低減
(約200ミリアンペア)させることができ、トラック
探査時のフォーカス機能の低下を防ぐと共に、電源とし
て用いる電池寿命を従来の2.5時間から3.5時間に
延長することができたものである。
This embodiment is constructed as described above, and conventionally, the current consumption when searching for a track (700 to 800 milliamps) was significantly increased compared to the current consumption (400 milliamps) during disk playback. However, when searching for a track, the disk motor driver (3) consumes the most current, and compared to the current consumption (30 milliamps) of the driver (3) during playback, the driver (3) consumes the most current when searching for a track. Since the current consumption (390 to 540 milliamps) of driver (3) was rapidly increasing, the input level of driver (3) was lowered (approximately 16 dB) using a pulse signal (0) that moves the pickup toward the inner circumference of the disk. , the current consumption during track search can be reduced (approximately 200 milliamps), preventing the focus function from deteriorating during track search, and the battery life used as a power source has been reduced from the conventional 2.5 hours to 3.5 hours. It could have been extended.

「発明の効果」 以上実施例から明らかなように本発明は、ディスクを回
転させるディスクモータ(1)を備え、ディスクモータ
ドライバ(3)を介して前記ディスクモータ(1)を駆
動制御する装置において、ピックアップを移動制御する
パルス信号(4)を用いてディスクモータドライバ(3
)の入力レベルを低下させる手段(5)を設け、ディス
クのトラック探査を行うときにディスクモータドライバ
(3)の入力レベルを低下させるべく構成したもので、
トラックの探査を行うときに最も多くの電流を消費する
前記ディスクモータドライバ(3)の消費電流を簡単に
低減させることができ、電源電圧の降下を防いでピック
アップのフォーカス機能の低下を阻止することができ、
ディスクのトラック探査を適正に行わせることができる
と共に、電源として用いる電池の寿命を著しく延長させ
ることができる等の効果を奏するものである。
``Effects of the Invention'' As is clear from the above embodiments, the present invention provides an apparatus that includes a disk motor (1) for rotating a disk and drives and controls the disk motor (1) via a disk motor driver (3). , the disk motor driver (3) uses the pulse signal (4) to control the movement of the pickup.
) is provided with means (5) for lowering the input level of the disc motor driver (3) when performing a track search of the disc, and is configured to lower the input level of the disc motor driver (3).
To easily reduce the current consumption of the disk motor driver (3) which consumes the most current when searching for a track, to prevent a drop in power supply voltage and to prevent a drop in focus function of a pickup. is possible,
This provides effects such as being able to properly perform track search on a disk and significantly extending the life of a battery used as a power source.

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

図面は本発明の一実施例を示す要部の電気回路図である
The drawing is an electrical circuit diagram of a main part showing an embodiment of the present invention.

Claims (1)

【特許請求の範囲】[Claims] ディスクを回転させるディスクモータを備え、ディスク
モータドライバを介して前記ディスクモータを駆動制御
する装置において、ピックアップを移動制御するパルス
信号を用いてディスクモータドライバの入力レベルを低
下させる手段を設け、ディスクのトラック探査を行うと
きにディスクモータドライバの入力レベルを低下させる
べく構成したことを特徴とするディスク再生装置。
In a device that includes a disk motor that rotates a disk and drives and controls the disk motor via a disk motor driver, means is provided for lowering the input level of the disk motor driver using a pulse signal that controls the movement of a pickup. A disc playback device characterized in that it is configured to lower the input level of a disc motor driver when performing track search.
JP4206887A 1987-02-24 1987-02-24 Disk reproducing device Granted JPS63209067A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4206887A JPS63209067A (en) 1987-02-24 1987-02-24 Disk reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4206887A JPS63209067A (en) 1987-02-24 1987-02-24 Disk reproducing device

Publications (2)

Publication Number Publication Date
JPS63209067A true JPS63209067A (en) 1988-08-30
JPH0432466B2 JPH0432466B2 (en) 1992-05-29

Family

ID=12625768

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4206887A Granted JPS63209067A (en) 1987-02-24 1987-02-24 Disk reproducing device

Country Status (1)

Country Link
JP (1) JPS63209067A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01102770A (en) * 1987-10-15 1989-04-20 Toshiba Corp Motor driving controller for magnetic recording and reproducing device
JP2005063355A (en) * 2003-08-20 2005-03-10 Matsushita Electric Ind Co Ltd Optical disk device and disk device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5737776A (en) * 1980-08-16 1982-03-02 Pioneer Electronic Corp Control system of record player
JPS57164473A (en) * 1981-03-31 1982-10-09 Fujitsu Ltd Magnetic disk device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5737776A (en) * 1980-08-16 1982-03-02 Pioneer Electronic Corp Control system of record player
JPS57164473A (en) * 1981-03-31 1982-10-09 Fujitsu Ltd Magnetic disk device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01102770A (en) * 1987-10-15 1989-04-20 Toshiba Corp Motor driving controller for magnetic recording and reproducing device
JP2005063355A (en) * 2003-08-20 2005-03-10 Matsushita Electric Ind Co Ltd Optical disk device and disk device

Also Published As

Publication number Publication date
JPH0432466B2 (en) 1992-05-29

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