JPS6171421A - Optical disc recording and reproducing controller - Google Patents

Optical disc recording and reproducing controller

Info

Publication number
JPS6171421A
JPS6171421A JP19201184A JP19201184A JPS6171421A JP S6171421 A JPS6171421 A JP S6171421A JP 19201184 A JP19201184 A JP 19201184A JP 19201184 A JP19201184 A JP 19201184A JP S6171421 A JPS6171421 A JP S6171421A
Authority
JP
Japan
Prior art keywords
recording
address
signal
drive circuit
output
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
JP19201184A
Other languages
Japanese (ja)
Inventor
Makoto Usui
誠 臼井
Katsumi Murai
村井　克己
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP19201184A priority Critical patent/JPS6171421A/en
Publication of JPS6171421A publication Critical patent/JPS6171421A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/04—Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions

Landscapes

  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To prevent duplicated write to an address signal without requiring assistance of a recording/reproduction switching controller by using a binary state holding device so as to output a recoding/reproduction switching signal from the recording/reproduction switching controller to a laser drive circuit and a pickup drive circuit with an address read end signal from an address demodulation circuit. CONSTITUTION:The recording/reproduction switching controller 1 in the reproducing state confirms an address demodulated by an address demodulation circuit 2 and brings a recording/reproduction switching signal (a) into the recording state when a preceding address to an address desired to be recorded comes. The signal (a) is not directly to a laser drive circuit and a pickup drive circuit 3 but awaited until an address read end signal (b) is outputted from the address demodulation circuit 2. When the signal (b) comes, a flip-flop output recoding/ reproduction control signal (d) switches the laser drive circuit and pickup drive circuit 3 into the recording state just after the address without time delay based on the signal (al). The moment a flip-flop 4 receives a reset signal (e) an output (d) is brought into the reproducing state.

Description

【発明の詳細な説明】 産業上の利用分野 本発明に光ディスク記録再生装置に関するものである。[Detailed description of the invention] Industrial applications The present invention relates to an optical disc recording/reproducing device.

従来例の構成とその問題点 近年、高密度大容量の情報記録媒体として光ディスクを
利用した記録再生装置が実用化され注目を集めている。2. Description of the Related Art Conventional Structures and Problems In recent years, recording and reproducing apparatuses using optical disks as high-density, large-capacity information recording media have been put into practical use and are attracting attention.

光ディスク上にａ大容量の情報を高速かつスムースに検
索するため、あらかじめアドレス信号の記鋒嘔れた溝が
刻まれており、光ディスクへの情報の記録および再生に
すべて前記アドレス信号を手がかりにしておこなわれ−
る。−したがって、光ディスクへ情報を記録する際にに
ディスクに無条件に記録することばできず、アドレス信
号の記録した部分がくるたびに記録を一時中断し、再生
状態としてアドレス信号を復調してアドレスの確認を行
なわなければならない。もしアドレス信号の部分に二重
書込みを行なうとアドレス信号が破壊され以後の検索が
できなくなる。In order to search a large amount of information quickly and smoothly, grooves are carved in advance on the optical disk in which address signals are recorded, and the address signals are used as clues to record and reproduce information on the optical disk. It's done-
Ru. - Therefore, when recording information on an optical disc, it is not possible to record information unconditionally on the disc, and each time the recorded part of the address signal comes, recording is temporarily interrupted, and the address signal is demodulated as a playback state. Confirmation must be carried out. If double writing is performed in the address signal portion, the address signal will be destroyed and subsequent searches will no longer be possible.

以下図面を参照しながら、従来の光ディスク記録再生制
御方法につい−て説明を行なう。第１図に従来の記録再
生制御回路のブロフク図、第２図−にタイミングチャー
トである。第１図において、１げマイクロプロセッサを
使用した記録再生切換制御器、２４＋）光ディスクより
読み取ったアドレス信号を復調するアドレス復調回路、
３ａレーザを駆動するレーザ駆動回路およびピックアッ
プを駆動する、ピックアップ駆動回路、ＩＬＨ記録再生
切換制御器１より出力される記録再生切換信号、ｂＨア
ドレス復調回路２より出力されるアドレス読取完了信号
（正論理）である。第２図において、ａａ記録再生切換
制御器より出力される記録再生切換信号（０のとき記録
）、ｂＨアドレス復調回路より出男されるアドレス読取
完了信号で、以上に第１図と同じものである。Ｃａ元デ
ィスクより読み取ったアドレス信号の位置を示す。A conventional optical disc recording/playback control method will be explained below with reference to the drawings. FIG. 1 is a block diagram of a conventional recording/reproducing control circuit, and FIG. 2 is a timing chart. In FIG. 1, a recording/reproduction switching controller using a microprocessor, an address demodulation circuit that demodulates an address signal read from a 24+ optical disk,
3a A laser drive circuit that drives the laser, a pickup drive circuit that drives the pickup, a recording/reproduction switching signal output from the ILH recording/reproduction switching controller 1, and an address read completion signal (positive logic) output from the bH address demodulation circuit 2. ). In Figure 2, the recording/reproduction switching signal output from the aa recording/reproduction switching controller (recorded when 0) and the address read completion signal output from the bH address demodulation circuit are the same as in Figure 1. be. Indicates the position of the address signal read from the Ca source disk.

以上のように構成された記録再生制御装置について以下
その動作を説明する。まず記録再生切換制御器１ｒｃ再
生状態であると、記録再生切換制御器１にアドレス復調
回路２より送られてくるアドレス復調完了信号ａを常時
チェックあるいに割込みにより検知し、記録すべきアド
レスがきたことを確認して記録再生切換信号ａを記録状
態に切り換え、レーザ駆動回路及びピックアップ駆動回
路３に伝達する。この様子に第２図に示されている。The operation of the recording and reproducing control device configured as described above will be explained below. First, when the recording/reproduction switching controller 1rc is in the reproduction state, the address demodulation completion signal a sent from the address demodulation circuit 2 to the recording/reproduction switching controller 1 is detected by constant checking or an interrupt, and the address to be recorded is detected. After confirming that this has occurred, the recording/reproducing switching signal a is switched to the recording state and transmitted to the laser drive circuit and pickup drive circuit 3. This situation is shown in FIG.

また第２図を見てわかるように、記録状態となってから
一定時間後にに次のアドレス部がくるため、記録再生切
換制御器１げ記録再生切換信号すを再生状態とし、アド
レス信号Ｃの読み取りを行なう。Also, as can be seen from FIG. 2, since the next address section comes after a certain period of time after entering the recording state, the recording/reproducing switching controller 1 sets the recording/reproducing switching signal S to the reproducing state, and the address signal C. Perform reading.

連続して記録を行なう場合に上記の動作がくり返される
。The above operation is repeated when recording is performed continuously.

しかしながら、上記のような構成でに第２図に示すよう
にアドレス読取完了信号すが出たのを記録再生制御器１
が判断して記録再生制御信号ａを記録状態に切シ換える
までに時間遅れがあること、記録状態に一度入ると記録
再生制御器１に時間待ちをして記録再生切換信号ａを再
生状態としなければならないため記録再生切換制御器１
にマイクロプロセッサを利用した場合にａ時間待ちの間
マイクロプロセッサに他の仕事ができない、またに割り
込みの回路が必要であるという欠点を有して−いた。However, with the above configuration, when the address read completion signal is output as shown in FIG.
There is a time delay before the controller judges and switches the recording/playback control signal a to the recording state. Recording/playback switching controller 1
When a microprocessor is used for this purpose, the microprocessor has the disadvantage that it cannot do other work while waiting for a period of time, and that an interrupt circuit is required.

発明の目的 本発明に上記欠点に鑑み、アドレス信号の直後より記録
を開始し、記録再生切換制御器の助けを必要とせずにア
ドレス信号への二重書き込を防止することのできる記録
再生制御装置を提供するものである。OBJECTS OF THE INVENTION In view of the above-mentioned drawbacks, the present invention provides a recording/reproduction control that starts recording immediately after an address signal and can prevent double writing to an address signal without the aid of a recording/reproduction switching controller. It provides equipment.

発明の構成 本発明の光ディスク記録再生制御器ｆｕｒ、従来の構成
に、記録再生制御器より出力された記録再生切換信号を
一時的に記憶し、アドレス復調回路より出力されるアド
レス読取完了信号に同期して記録再生切換信号を、レー
ザ駆動回路とピックアップ駆動回路に出力する二値状態
保持器と、二値状態保持器の出力が記録状態に切換わる
と一定時間後に二値状態保持器の出力を強制的に再生切
換状態にするリセット回路を加えた構成からなり、この
構成によって、記録再生制御器に記録すべきアドレスの
少し前に記録再生切換信号を記録状態としておけば、ア
ドレス復調回路からのアドレス読取完了信号によりアド
レス直後より自動的に二値状態保持器の出力が記録状態
に切り換わり、゛一定時間がたち、ディスク上の次のア
ドレス部分が来る直前になるとリセット回路の働きによ
り自動的に二値状態保持器の出力が再生状態となり、し
たがって高信頼度でアドレス部分の保護ができるもので
ある。Composition of the Invention The optical disc recording/playback controller fur of the present invention has a conventional structure in which the recording/playback switching signal output from the recording/playback controller is temporarily stored and synchronized with the address read completion signal output from the address demodulation circuit. A binary state holder outputs a recording/reproduction switching signal to the laser drive circuit and pickup drive circuit.When the output of the binary state holder is switched to the recording state, the output of the binary state holder is output after a certain period of time. The configuration includes a reset circuit that forces the playback switching state. With this configuration, if the recording/playback switching signal is placed in the recording state a little before the address to be recorded in the recording/playback controller, the address demodulation circuit can Immediately after the address is addressed, the output of the binary state holder is automatically switched to the recording state by the address read completion signal, and when a certain period of time has elapsed and the next address portion on the disk is about to arrive, the reset circuit automatically operates. In this case, the output of the binary state holder becomes the regenerated state, so that the address part can be protected with high reliability.

実施例の説明 以下本発明の一実施例について、第３図、第４図を参照
しながら説明する。第３図において、１げ記録再生切換
制御器、２げアドレス復調回路、３ａレ一ザ駆動回路及
びビックア、ンプ駆動回路で、以上に従来例と同じもの
でるる。４ａ記録再生切換制御器１より出力される記録
再生切換信号ａを一時的に記憶するフリノプフ０．７ブ
、６ａフリ・ソプフロフブ４の出力が一定時間記録状態
になれば、強制的にフリップフロップ４の出力を再生状
態とするリセット回路である。またａｉａ記録再生切換
信号、ｂＨアドレス読取完了信号で、従来例と同じもの
であり、ｄｒＸフリップフロップよりレーザ駆動回路及
びピックアップ駆動回路へ出力される記録再生切換信号
（以降フリップフロップ出力記録再生切換信号という、
なお０のとき記録でるる）、６１’ｆｆリセット回路５
から７リツプ７０・ツブ４に出力される記録終了信号（
負論理）である。第４図において、＆ａ記録再生切換信
号、ｂＨアドレス読取完了信号、ｄｉｄフリップフロ・
ンプ出力記録再生切換信号、ｅｒｘ記録終了信号で、以
上に第３図と同じものである。ｄｉアドレス信号のめる
位置を示す。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 3 and 4. In FIG. 3, the 1st recording/reproduction switching controller, the 2nd address demodulation circuit, the 3a laser driving circuit, and the amplifier driving circuit are the same as those of the conventional example. When the output of the flip-flop 4a, which temporarily stores the recording/playback switching signal a output from the recording/playback switching controller 1, is in the recording state for a certain period of time, the flip-flop 4 is forcibly switched off. This is a reset circuit that puts the output of Also, the aia recording/reproducing switching signal and the bH address reading completion signal are the same as in the conventional example, and are the recording/reproducing switching signal (hereinafter referred to as flip-flop output recording/reproducing switching signal) output from the drX flip-flop to the laser drive circuit and pickup drive circuit. That is,
Note that it is recorded when it is 0), 61'ff reset circuit 5
The recording end signal (
negative logic). In FIG. 4, &a recording/reproduction switching signal, bH address reading completion signal, did flip-flop
The amplifier output recording/reproduction switching signal and the erx recording end signal are the same as those shown in FIG. 3 above. Indicates the location where the di address signal is placed.

以上のように構成された本発明の装置について、以下そ
の動作を説明する。まず、記録再生切換制御器’１　ｒ
ｒ再生状態であるとする。この状態においてａ記録再生
切換制御器１にアドレス復調回路２で復調されるアドレ
スを確認し、記録したいアドレスの１つ前のアドレスを
すぎたら記録再生切換信号ａを記録状態とする。この記
録再生切換信号ａｒｒ直接にａレーザ駆動回路及びピッ
クアップ駆動回路３にａ伝達されず、アドレス復調回路
２よりアドレス読取完了信号すが出力されるまで待たさ
れる。アドレス読取完了信号すが出ると、記録再生切換
信号亀をもとに７リツプフロツプ出力記録再生制御信号
ｄが時間遅れなくアドレスの直後よりレーザ駆動回路及
びピックアップ駆動回路３に伝わり、レーザ駆動回路及
びピックアップ駆動回路３に記録状態に切り換わる。こ
のとき、フリノプフロフプ出力記録再生切換信号ｄｉｄ
リセフト回路５にも伝えられる。リセット回路５に記録
状態への切換信号を受は取ると一定時間後ディスク上で
次のアドレスの来る直前となったとき、リセット信号ｅ
を出力する０フリツプフロツプ４げリセ７）回路６より
リセット信号ｅを受けとった瞬間、出力ｄを再生状態と
するため、し゛−ザ駆動回路及びピックアップ駆動回路
５にアドレス信号Ｃのある部分でにいつも再生状態に切
り換えられている。連続して記録する場合にに上記のこ
とがくり返され、記録を終了する場合にに記録したい最
後のアドレスが過ぎた後、次のアドレス部が来るまでに
記録再生切換制御器１の記録再生切換信号を再生状態に
切り換えておけばよい。The operation of the apparatus of the present invention configured as described above will be described below. First, the recording/reproduction switching controller '1 r
Suppose that it is in the r playback state. In this state, the address demodulated by the address demodulation circuit 2 is confirmed by the recording/reproduction switching controller a, and when the address one address before the address to be recorded is passed, the recording/reproduction switching signal a is set to the recording state. This recording/reproduction switching signal arr is not directly transmitted to the laser drive circuit a and the pickup drive circuit 3, but is awaited until the address demodulation circuit 2 outputs the address read completion signal a. When the address reading completion signal S is output, the 7-lip-flop output recording and reproducing control signal d is transmitted to the laser drive circuit and the pickup drive circuit 3 immediately after the address without any time delay based on the recording and reproduction switching signal. The drive circuit 3 is switched to the recording state. At this time, the flinopflop output recording/playback switching signal did
It is also transmitted to the reset circuit 5. When the reset circuit 5 receives a signal to switch to the recording state, after a certain period of time, just before the next address arrives on the disk, the reset signal e is sent.
7) At the moment when the reset signal e is received from the circuit 6, the output d is set to the reproducing state. Switched to playback mode. When recording continuously, the above is repeated, and when recording ends, after the last address to be recorded has passed, the recording/reproducing switching controller 1 starts recording/reproducing until the next address section arrives. It is sufficient to switch the switching signal to the reproduction state.

以上のように本実施例によれば、フリップフロップとリ
セット回路とにより、アドレス部分直後よりレーザ駆動
回路ピックアップ駆動回路を記録状態としてディスクへ
の書き込みを開始することができ、かつ書き込み途中の
アドレス信号部分を効果的に保護することができるもの
でるる。As described above, according to this embodiment, by using the flip-flop and the reset circuit, it is possible to set the laser drive circuit pickup drive circuit to the recording state immediately after the address part and start writing to the disk, and the address signal during writing can be started. There is something that can effectively protect the area.

発明の効果 以上のように本発明に、記録再生切換制御器からの記録
再生切換信号を二値状態保持器を用いてアドレス復調回
路からのアドレス読取完了信号によってレーザ駆動回路
及びピンクアップ、駆動回路に出力することにより、デ
ィスク上のアドレス直後より記録を始めることができ、
しかもリセット回路を用いることにより次のアドレス部
の直前で必ずレーザ駆動回路とピックアップ駆動回路が
再生状態となり、アドレス部分を保護することができる
という効果をもつ。また、記録再生制御器に゛割り込み
を使う必要もないものである。Effects of the Invention As described above, in the present invention, the recording/reproducing switching signal from the recording/reproducing switching controller is input to the laser drive circuit and the pink-up and driving circuit by the address read completion signal from the address demodulation circuit using a binary state holder. By outputting to , you can start recording immediately after the address on the disk.
Moreover, by using the reset circuit, the laser drive circuit and the pickup drive circuit are always brought into the reproducing state immediately before the next address section, thereby having the effect that the address section can be protected. Furthermore, there is no need to use interrupts in the recording/reproducing controller.

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

第１図に従来例を示すブロック回路図、第２図にその動
作タイミングチャート、第３図ａ本発明の一実施例を示
すブロック回路図、第４図にその動作タイミングチャー
トである。 １・・・・・・記録再生切換制御器、２・・・・・・ア
ドレス復調回路、３・・・・・・レーザ駆動回路及びビ
・ツクアップ駆動回路、４・・・・・・フリ、ツブフロ
ップ、５・・・・・リセット回路。FIG. 1 is a block circuit diagram showing a conventional example, FIG. 2 is an operation timing chart thereof, FIG. 3A is a block circuit diagram showing an embodiment of the present invention, and FIG. 4 is an operation timing chart thereof. DESCRIPTION OF SYMBOLS 1...Record/reproduction switching controller, 2...Address demodulation circuit, 3...Laser drive circuit and pickup drive circuit, 4...Fri, Tsubuflop, 5...Reset circuit.

Claims (1)

【特許請求の範囲】[Claims] 記録再生制御器より出力される記録再生切換信号を一時
的に記憶し、アドレス復調回路より出力されるアドレス
読取完了信号に同期して前記記録再生切換信号をレーザ
駆動回路及びピックアップ駆動回路に出力する二値状態
保持器と、前記二値状態保持器の出力が記録状態に切換
わると、一定時間後に二値状態保持器の出力を強制的に
再生切換状態にするリセット回路とより構成されたこと
を特徴とする光ディスク記録再生制御装置。Temporarily stores the recording/reproduction switching signal output from the recording/reproduction controller, and outputs the recording/reproduction switching signal to the laser drive circuit and the pickup drive circuit in synchronization with the address read completion signal output from the address demodulation circuit. comprising a binary state holder and a reset circuit that forcibly changes the output of the binary state holder to a regeneration switching state after a certain period of time when the output of the binary state holder is switched to a recording state; An optical disc recording/playback control device characterized by:
JP19201184A 1984-09-13 1984-09-13 Optical disc recording and reproducing controller Pending JPS6171421A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19201184A JPS6171421A (en) 1984-09-13 1984-09-13 Optical disc recording and reproducing controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19201184A JPS6171421A (en) 1984-09-13 1984-09-13 Optical disc recording and reproducing controller

Publications (1)

Publication Number Publication Date
JPS6171421A true JPS6171421A (en) 1986-04-12

Family

ID=16284115

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19201184A Pending JPS6171421A (en) 1984-09-13 1984-09-13 Optical disc recording and reproducing controller

Country Status (1)

Country Link
JP (1) JPS6171421A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5733441A (en) * 1980-08-07 1982-02-23 Matsushita Electric Ind Co Ltd Optical information recorder and reproducer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5733441A (en) * 1980-08-07 1982-02-23 Matsushita Electric Ind Co Ltd Optical information recorder and reproducer

Similar Documents

Publication Publication Date Title
MY113766A (en) Recording and reproducing apparatus and method using a buffer memory to ensure continuous output during track jumps caused by either vibration or fast reproduction mode.
JPH03150765A (en) Reproducing device
JPS6171421A (en) Optical disc recording and reproducing controller
JP2732884B2 (en) Data recording method, data reproducing method, data recording / reproducing method, recording device, reproducing device, and recording / reproducing device
JPH03273586A (en) Information reproducing device
EP0254254A2 (en) Compact disc reproducing apparatus
JPH11126428A (en) Information recorder
JP3811990B2 (en) Information storage medium and playback apparatus
JPS61230629A (en) Method for detecting position of optical head
JP2702823B2 (en) Optical disc playback device
JP4070380B2 (en) Laser output control circuit for optical disc recording / reproducing apparatus
JP2832327B2 (en) Dubbing method and dubbing apparatus
JP3172002B2 (en) High-speed data dubbing apparatus and high-speed dubbing method
JPS6013376A (en) Storing method of information
JPH04370567A (en) Data transfer method for cd-rom dubbing device
JPH0714308A (en) Fast forwarding method for disk reproducing device
JPH04324161A (en) Optical disk reproducing device
JPH06139702A (en) Device and method for reproducing optical disk
JPH0528638A (en) Data recording device
JPH0581754A (en) Read and write control method
JPH06349190A (en) Duplicating device for optical disk
JPS60143484A (en) Retrial control system
JPH05159302A (en) Optical disk reproducing device
JPH05325390A (en) System for reproducing optical disk
JPS61246903A (en) Helical scan magnetic recording and reproducing device