JPS60256925A - Optical disc exclusive for reproduction - Google Patents

Optical disc exclusive for reproduction

Info

Publication number
JPS60256925A
JPS60256925A JP59113294A JP11329484A JPS60256925A JP S60256925 A JPS60256925 A JP S60256925A JP 59113294 A JP59113294 A JP 59113294A JP 11329484 A JP11329484 A JP 11329484A JP S60256925 A JPS60256925 A JP S60256925A
Authority
JP
Japan
Prior art keywords
section
data
recorded
management information
file management
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
JP59113294A
Other languages
Japanese (ja)
Inventor
Shigehiko Hiraoka
平岡　茂彦
Isao Sato
勲 佐藤
Akira Ichinose
亮 一之瀬
Tatsuo Sugimura
立夫 杉村
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 JP59113294A priority Critical patent/JPS60256925A/en
Priority to EP85106593A priority patent/EP0164061B1/en
Priority to DE8585106593T priority patent/DE3570305D1/en
Publication of JPS60256925A publication Critical patent/JPS60256925A/en
Priority to US07/143,261 priority patent/US4789979A/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
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24085—Pits
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
    • G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
    • G11B27/327—Table of contents
    • G11B27/329—Table of contents on a disc [VTOC]
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/215—Recordable discs
    • G11B2220/218—Write-once discs

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)

Abstract

PURPOSE:To reduce the master disc cutting time and retrieval time at reproduction by recording a track next to the final track of a file management information section recorded from the innermost (outermost) circumference in reverse order as the final track of a data section. CONSTITUTION:The file management information section 4 is recorded from the innermost circumference in a reproducing exclusive optical disc 5 and then the data section 2 comes next. Since no optical head is placed to a non-recording section 6 at reproduction, no guide slot is engraved in the non-recording part 6. In cutting a master disc of the disc 5, the information section 4 is cut from the innermost circumference and then the data section 2 is cut succeedingly without any interval. Then the non-recording part 6 is not cut.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は光学的に検出可能な案内溝にあらかじめ信号が
記録されている再生専用光ディスクに関するものである
。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a read-only optical disc on which signals are prerecorded in an optically detectable guide groove.

従来例の構成とその問題点 近年、光ディスクはその高密度記録特性によシ、大容量
ディジタルメモリとして注目されている。Conventional Structures and Problems In recent years, optical disks have attracted attention as large-capacity digital memories due to their high-density recording characteristics.

第１図に、記録可能光ディスクあるいは、消去可能光デ
ィスクの記録フォーマントの従来例を示す。第１図にお
いて、光ディスク１において最外周より内側に向かって
データを記録してゆき、逆に最内周よシ外側に向かって
データ部を管理するファイル管理情報を記録してゆく。FIG. 1 shows a conventional example of a recording formant for a recordable optical disc or an erasable optical disc. In FIG. 1, data is recorded on an optical disc 1 from the outermost circumference toward the inside, and conversely, file management information for managing the data portion is recorded from the innermost circumference outward.

すなわち光ディスク１はデータ記録部２と未記録部３と
ファイル管理情報記録部４に分けられる。またこれとは
反対に最内周より外側に向かってデータを、最外周よシ
内側に向かってファイル管理情報を記録することもある
。このようにデータ部とファイル管理情報部とを反対側
より逆向きに記録することにより、光ディスクの容量を
最大限利用できる。That is, the optical disc 1 is divided into a data recording section 2, an unrecorded section 3, and a file management information recording section 4. Conversely, data may be recorded outward from the innermost circumference, and file management information may be recorded inward from the outermost circumference. By recording the data section and the file management information section in the opposite direction from opposite sides in this way, the capacity of the optical disc can be utilized to the maximum.

同様に、第１図のフォーマットを持つ、再生専用光ディ
スク、すなわち第１図のフォーマットを持つ、記録可能
あるいは消去可能な光デイスク装置で再生可能で、かつ
案内溝にあらかじめ情報が記録されておシ、使用者が書
き込むことのできない再生専用光ディスクが考えられて
いる。この再生専用光ディスクは大量のソフトウェアや
データを供給する手段として適している。Similarly, a playback-only optical disc having the format shown in Figure 1 is playable by a recordable or erasable optical disc device having the format shown in Figure 1, and information is recorded in advance in the guide groove. , read-only optical discs that cannot be written to by the user are being considered. This read-only optical disc is suitable as a means for supplying large amounts of software and data.

しかし、第１図のフォーマントの再生専用光ディスフに
は以下に述べるような問題点がある。すなわち、光ディ
スクは大量のデータが記録できるので、一般にソフトウ
ェア等を記録する場合、第１図における未記録部３が大
きくなる。この未記録部３の全く情報が存在しない部分
においても、光学ヘッドが移動するために案内溝は必要
であシ、再生専用光ディスクの原盤をカッティングする
際には、未記録部３のデータ情報のない案内溝も、デー
タ部２やファイル、管理情報部４のデータ情報を含む案
内溝と同じ時間を必要とする。However, the read-only optical disc of the formant shown in FIG. 1 has the following problems. That is, since a large amount of data can be recorded on an optical disc, generally when recording software or the like, the unrecorded portion 3 in FIG. 1 becomes large. Even in this part of the unrecorded part 3 where no information exists, a guide groove is necessary for the movement of the optical head. A guide groove that does not contain data requires the same amount of time as a guide groove that includes data information in the data section 2, files, and management information section 4.

また、データ部とファイル管理情報をそれぞれ最内周、
およ゛び最外周から記録するため、記録されている情報
が少なくても再生時には容量一杯に情報が記録されてい
る光ディスクと同じだけの検索時間を必要とする。In addition, the data section and file management information are stored in the innermost circle, respectively.
Since information is recorded from the outermost circumference, even if there is only a small amount of recorded information, the same amount of search time is required during playback as on an optical disc that is full of information.

発明の目的 本発明は以上の様な問題点を解消するもので、再生専用
光ディスクのファイル管理情報部とデータ部の間の未記
録部を実質的になくし、原盤カンティング時間の短縮と
再生時の検索時間の短縮をはかることを目的とする。OBJECT OF THE INVENTION The present invention solves the above-mentioned problems by substantially eliminating the unrecorded area between the file management information section and the data section of a read-only optical disc, thereby shortening the master disc canting time and improving the playback time. The purpose is to shorten the search time.

°　発明の構成 本発明は、スパイラル状の案内溝を有する再生専用光デ
ィスクにおいて、最内周あるいは最外周よりファイル管
理情報を記録し、ファイル管理情報部の最終トラックの
次のトラックを、データ部の最終トラックとし、そこか
らデータの先頭トラックに向かってデータを逆順で記録
するフォーマットを有する再生専用光ディスクである。° Structure of the Invention The present invention records file management information from the innermost or outermost circumference in a read-only optical disc having a spiral guide groove, and records the file management information from the last track in the file management information section to the data section. This is a read-only optical disc having a format in which data is recorded in reverse order from the last track to the first track of data.

実施例の説明 第２図、第３図に本発明の一実施例の再生専用光ディス
クのフォーマントを示す。再生専用光ディスク５におい
てファイル管理情報部４を最内周よシ記録したのが第２
図であり、最外周よシ記録したのが第３図である。ファ
イル管理情報部４に続いてデータ部２があシ、再生時に
は未記録部６には光学ヘッドが位置することはないので
未記録部６は案内溝がきざ壕れていない。再生専用光デ
ィスクの原盤のカッティングに際しては、第２図のフォ
ーマットの場合は最内周より、第３図のフォーマントの
場合は最外周より、捷ずファーイル管理情報部４のカッ
ティングを行ない、引き継いてデータ部２のカッティン
グを行なう、そして未記録部６はカッティングを行なわ
ない。DESCRIPTION OF EMBODIMENTS FIGS. 2 and 3 show the format of a read-only optical disc according to an embodiment of the present invention. The second one is the one in which the file management information section 4 is recorded on the innermost circumference of the read-only optical disc 5.
Fig. 3 is the one recorded from the outermost circumference. There is a data section 2 following the file management information section 4, and since the optical head is not positioned in the unrecorded section 6 during reproduction, the unrecorded section 6 has no guide groove. When cutting the master of a read-only optical disc, the file management information section 4 is cut from the innermost circumference in the case of the format shown in Fig. 2, and from the outermost circumference in the case of the formant shown in Fig. 3. The data section 2 is cut, and the unrecorded section 6 is not cut.

次に、第４図に上記のフォーマットを持つ再生専用光デ
ィスクの、ファイル管理情報部４とデータ部２の情報デ
ータ単位の並びの例を示す。１トラツクがｎセクタに分
割されてお９、ファイル管理情報部４は第１トラツクの
第１セクタに先頭の情報データ単位ｆ１が記録され、以
下第１トラツクの第１セクタまで（Ａ’−１）Ｘｎ＋１
個の情報データ単位が順次記録されている。なお第１ト
ラツクの残シのセクタには案内溝のみでデータ情報は記
録されていない。次にデータ部２は第ｍトラックの第１
セクタに先頭のデータ単位ｄ１が記録され、第ｎセクタ
まで順次データ単位が記録される。そして続いて一本手
前のトラック、すなわち第ｍ−１トランクの第１セクタ
から第ｎセクタまで順次データ単位を記録する。このよ
うにデータ部２においてはセクタについては昇順に、そ
してトラックについては降順に記録され、第１＋１トラ
ツク、すなわちファイル管理情報部４の最終トラックの
次のトラックの第ｎ−１セクタまで（ｍ＝ｄ）ｘｎ’−
１個のデータ単位が記録されている。Next, FIG. 4 shows an example of the arrangement of information data units in the file management information section 4 and data section 2 of a read-only optical disc having the above format. One track is divided into n sectors 9, and the file management information section 4 records the first information data unit f1 in the first sector of the first track, and then records the data up to the first sector of the first track (A'-1). )Xn+1
The information data units are sequentially recorded. Note that the remaining sectors of the first track contain only guide grooves and no data information is recorded therein. Next, the data part 2 is the first data of the m-th track.
The first data unit d1 is recorded in the sector, and data units are sequentially recorded up to the n-th sector. Then, data units are sequentially recorded from the first sector to the n-th sector of the previous track, that is, the (m-1)th trunk. In this way, in the data section 2, sectors are recorded in ascending order and tracks are recorded in descending order, up to the (n-1)th sector of the 1+1st track, that is, the next track after the last track of the file management information section 4 (m= d) xn'-
One data unit is recorded.

なお第１＋１トラツクの最後の第ｎセクタは案内溝のみ
でデータ情報は記録されていない。Note that the last n-th sector of the 1st+1st track is only a guide groove and no data information is recorded therein.

今、ファイル管理情報部の情報データ単位がＸ個、デー
タ部のデータ単位がｙ個であった・とするとファイル管
理情報部のトラック数りは、輌−〔ｘ／ｎ〕＋１で与え
られ、データ部のトラック数１ｉｄｉ−（ｙ／ｎ）＋１
で与えられる。そこで、第１トラツクから第１トラツク
までにファイル管理情報のデータ単位が記録され、第ｈ
＋ｊ）ランクから第１＋１トラツクまでにデータ部のデ
ータ単位が記録されるように、第４図の並べ方に従って
データ単位を配列し、カッティングマシンにデータ単位
を入力する。ここで〔ｘ／ｎ〕とはＸ／ｎを越えない最
大の整数である。Now, if the number of information data units in the file management information section is X and the data unit in the data section is y, then the number of tracks in the file management information section is given by - [x/n] + 1, Number of tracks in data section 1idi-(y/n)+1
is given by Therefore, data units of file management information are recorded from the first track to the hth track.
+j) Arrange the data units according to the arrangement shown in FIG. 4 so that the data units of the data section are recorded from the rank to the 1st +1 track, and input the data units to the cutting machine. Here, [x/n] is the largest integer that does not exceed X/n.

発明の効果 以上の様に本発明は、再生専用光ディスクのフアイル管
理情報部とデータ部の間の未記録部を、記録可能あるい
は消去可能光ディスクとの互損性を失なうことなく、実
質的になくしたものであシ、原盤カッティング時間の短
縮をはかることができ、丑だ実際の再生時においても、
ファイル管理情報部とデータ部の間の検索時間を短縮す
ることができる。Effects of the Invention As described above, the present invention substantially eliminates the unrecorded part between the file management information part and the data part of a read-only optical disc without losing compatibility with recordable or erasable optical discs. It is possible to shorten the cutting time of the original disc, even during actual playback.
Search time between the file management information section and the data section can be reduced.

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

第１図は、従来の記録可能あるいは消去可能な光ディス
クの、ファイル管理情報部とデータ部の関係を示すフォ
ーマット図、第２図は、本発明の一実施例で、ファイル
管理情報部を最内周より記録した、再生専用光ディスク
のフォーマット図、第３図は、本発明の他の実施例で、
ファイル管理情報部を最外周より記録した、再生専用光
ディスクのフォーマット図、第４図は本発明の実施例に
おける再生専用光ディスクの、ファイル管理情報部とデ
ータ部の情報データ単位の配列例を示す図である。 ２・・・・・データ部、４・・・・ファイル管理情報部
、５・・・・・再生専用光ディスク。− 代理人の氏名　弁理士　中　尾　敏　男　ほか１名第　
ｌ　はｊ 第２は１ ｈ１３図 の４図FIG. 1 is a format diagram showing the relationship between the file management information section and the data section of a conventional recordable or erasable optical disc. FIG. 2 is an embodiment of the present invention, in which the file management information section is FIG. 3 is a format diagram of a read-only optical disc recorded from the same time as another embodiment of the present invention.
A format diagram of a read-only optical disc in which the file management information section is recorded from the outermost circumference. FIG. 4 is a diagram showing an example of the arrangement of information data units of the file management information section and data section of the read-only optical disk in the embodiment of the present invention. It is. 2...data section, 4...file management information section, 5...read-only optical disc. − Name of agent Patent attorney Toshio Nakao and 1 other person
l is j 2nd is 1 h13 figure 4

Claims (1)

【特許請求の範囲】[Claims] スパイラル状の案内溝を持ち、その内周（または外周）
より外周（または内周）に向かってファイル管理情報が
、外周（または内周）よシ内周（または外周）に向かっ
てデータが記録され、かつ前記ファイル管理情報とデー
タの間隔を開けずに記録したことを特徴とする再生専用
光ディスク０It has a spiral guide groove, and its inner periphery (or outer periphery)
File management information is recorded toward the outer circumference (or inner circumference), data is recorded from the outer circumference (or inner circumference) toward the inner circumference (or outer circumference), and there is no gap between the file management information and the data. A read-only optical disc characterized by recording 0
JP59113294A 1984-06-01 1984-06-01 Optical disc exclusive for reproduction Pending JPS60256925A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP59113294A JPS60256925A (en) 1984-06-01 1984-06-01 Optical disc exclusive for reproduction
EP85106593A EP0164061B1 (en) 1984-06-01 1985-05-29 Optical disk exclusively used for reproduction
DE8585106593T DE3570305D1 (en) 1984-06-01 1985-05-29 Optical disk exclusively used for reproduction
US07/143,261 US4789979A (en) 1984-06-01 1988-01-05 Optical disk exclusively used for reproduction wherein guide grooves located between data managing information and data recording regions have no track address sections

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59113294A JPS60256925A (en) 1984-06-01 1984-06-01 Optical disc exclusive for reproduction

Publications (1)

Publication Number Publication Date
JPS60256925A true JPS60256925A (en) 1985-12-18

Family

ID=14608544

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59113294A Pending JPS60256925A (en) 1984-06-01 1984-06-01 Optical disc exclusive for reproduction

Country Status (1)

Country Link
JP (1) JPS60256925A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61279957A (en) * 1985-06-06 1986-12-10 Canon Inc Information recording method for postscript type information recording medium
JPH0254118A (en) * 1988-08-18 1990-02-23 Hioki Ee Corp Memory control method
US5206850A (en) * 1989-01-25 1993-04-27 Sony Corporation Optically writable record of digital information and recording apparatus therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61279957A (en) * 1985-06-06 1986-12-10 Canon Inc Information recording method for postscript type information recording medium
JPH0254118A (en) * 1988-08-18 1990-02-23 Hioki Ee Corp Memory control method
US5206850A (en) * 1989-01-25 1993-04-27 Sony Corporation Optically writable record of digital information and recording apparatus therefor

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