JP3896889B2

JP3896889B2 - Information recording medium, information recording / reproducing method, and information recording / reproducing apparatus

Info

Publication number: JP3896889B2
Application number: JP2002116598A
Authority: JP
Inventors: 哲二郎近藤; 明弘奥村; 成司和田
Original assignee: Sony Corp
Current assignee: Sony Corp
Priority date: 2002-04-18
Filing date: 2002-04-18
Publication date: 2007-03-22
Anticipated expiration: 2022-04-18
Also published as: JP2003317027A

Description

【０００１】
【発明の属する技術分野】
本発明は、音楽や映像等の各種コンテンツからなるメイン情報が記録される情報記録媒体、その情報記録／再生方法並びに情報記録／再生装置に関する。
【０００２】
【従来の技術】
音楽や映像等の各種コンテンツの電子化情報は、近年、機器の多機能化や高性能化或いは高容量処理化等の開発促進、画像圧縮技術等の処理技術の向上、インターネット等による利用環境の整備或いは処理速度や通信速度の向上等によって利用促進が図られている。電子化情報は、例えば機器内に備えられたハードディスクや半導体メモリ（ＦＬＡＳＨメモリ）等の固定記憶手段或いは機器に挿脱操作されて持ち運び自在な磁気テープ、光ディスクや光磁気ディスク、磁気ディスク等の可搬型記録媒体（以下、情報記録媒体と総称する。）に記録され、情報再生装置や情報記録再生装置（以下、情報記録再生装置と総称する。）よって再生されるとともに適宜の記録手段に記録される。
【０００３】
【発明が解決しようとする課題】
従来より、磁気テープ等のテープメディアは大容量の情報記録媒体として知られている。また、光ディスク、光磁気ディスクや磁気ディスク等のディスクメディアは、ランダムアクセスが可能で低コストの情報記録媒体として知られている。さらに、半導体メモリは、高速ランダムアクセスが可能でメカレスすなわち機構部品を必要としない情報記録媒体として知られている。
【０００４】
しかしながら、従来の技術では大容量・低コスト・高速ランダムアクセス性・メカレスなどを両立することは困難であった。
【０００５】
本発明の目的は、上述の如き従来技術では成し得なかった大容量・低コスト・高速ランダムアクセス性・メカレスなど可能にした情報記録媒体及びこの情報記録媒体を用いて情報の記録及び／又は再生を行う情報記録方法、情報再生方法、情報記録再生方法、情報記録装置、情報再生装置、並びに情報記録再生装置を提供することにある。
【０００６】
【課題を解決するための手段】
本発明に係る情報記録媒体は、二次元読み取りヘッドにより読み取り可能な情報記録マークとして少なくともメイン情報及び次のスキャン方向の情報にて構成したクラスタ単位で情報が記録される記録媒体層を有し、上記記録媒体層を介して少なくともメイン情報及び次のスキャン方向の情報にて構成したクラスタ単位で情報の書き込み／読み出しが行われることを特徴とする。
【０００７】
また、本発明に係る情報記録方法は、二次元読み取りヘッドにより読み取り可能な情報記録マークとして少なくともメイン情報及び次のスキャン方向の情報にて構成したクラスタ単位で情報を情報記録媒体の記録媒体層に記録することを特徴とする。
【０００９】
また、本発明に係る情報記録再生方法は、二次元読み取りヘッドにより読み取り可能な情報記録マークとして少なくともメイン情報及び次のスキャン方向の情報にて構成したクラスタ単位で情報を情報記録媒体の記録媒体層に記録し、上記情報記録媒体の記録媒体層から二次元読み取りヘッドにより上記情報記録マークを読み取って少なくともメイン情報及び次のスキャン方向の情報にて構成したクラスタ単位で情報を再生することを特徴とする。
【００１０】
また、本発明に係る情報記録装置は、二次元書き込みヘッドを備え、二次元読み取りヘッドにより読み取り可能な情報記録マークとして少なくともメイン情報及び次のスキャン方向の情報にて構成したクラスタ単位で情報を情報記録媒体の記録媒体層に記録することを特徴とする。
【００１１】
また、本発明に係る情報再生装置は、二次元読み取りヘッドを備え、上記二次元読み取りヘッドにより情報記録媒体の記録媒体層から情報記録マークを読み取って少なくともメイン情報及び次のスキャン方向の情報にて構成したクラスタ単位で情報を再生することを特徴とする。
【００１２】
さらに、本発明に係る情報記録再生装置は、二次元書き込みヘッドと二次元読み取りヘッドを備え、上記二次元読み取りヘッドにより読み取り可能な情報記録マークとして少なくともメイン情報及び次のスキャン方向の情報にて構成したクラスタ単位で情報を上記二次元書き込みヘッドにより情報記録媒体の記録媒体層に記録し、上記情報記録媒体の記録媒体層から上記二次元読み取りヘッドにより上記情報記録マークを読み取って少なくともメイン情報及び次のスキャン方向の情報にて構成したクラスタ単位で情報を再生することを特徴とする情報記録再生装置。
【００１３】
【発明の実施の形態】
以下、本発明の実施の形態について、図面を参照して詳細に説明する。
【００１４】
本発明は、例えば図１に示すような構成の情報記録／再生装置１０に適用される。
【００１５】
この情報記録／再生装置１０は、正方形の情報記録媒体３０を介して情報の記録／再生を行うもので、上記情報記録媒体３０の記録面全面に対して、情報の書き込み及び／又は読み取りを行う二次元ヘッド２０を備える。
【００１６】
上記正方形の情報記録媒体３０は、二次元ヘッド２０により情報の書き込み／読み取り可能な情報記録マークとして情報が記録される記録媒体層３１を有する。この情報記録媒体３０としては、図２に示すように光学的に読み取り可能な透過型情報記録マーク３１Ａとして情報が記録される透過型記録媒体層を有する光学的情報記録媒体３０Ａ、図３に示すように光学的に読み取り可能な反射型情報記録マーク３１Ｂとして情報が記録される反射型記録媒体層を有する光学的情報記録媒体３０Ｂ、図４に示すように電気的に読み取り可能な静電容量情報記録マーク３１Ｃとして情報が記録さる静電容量型記録媒体層を有する静電型情報記録媒体３０Ｃ、あるいは、図５に示すように磁気的に読み取り可能な磁性情報記録マークとして情報が記録される磁性記録媒体層を有する磁気的情報記録媒体３０Ｄ等を用いることができる。
【００１７】
このような構造の情報記録再生装置１０では、上記二次ヘッド２０により読み取り可能な情報記録マークとして情報を当該二次元ヘッド２０により情報記録媒体３０の記録媒体層３１に記録し、上記情報記録媒体３０の記録媒体層３１から上記二次元ヘッド２０により上記情報記録マークを読み取って情報を再生する。
【００１８】
ここで、この情報記録再生装置１０では、二次元ヘッド２０により、情報記録媒体３０の記録面全面に対して、情報の書き込み及び／又は読み取りを行う方式を採用することにより、上記情報記録媒体３０を、従来のＣＤ−ＲＯＭやＤＶＤのようなディスク状メディアにする必要がなく、上記正方形などの自由な形状にすることができ、しかも、高速ランダムアクセス性を確保することができる。また、メディアの読み書き装置も従来のＣＤ−ＲＯＭやＤＶＤのような円盤を回転させるようなモータやピックアップを移動させるようなメカニズムも必要なくなるため、低消費電力で大容量・低コストかつコンパクトなメディアの読み書き装置を実現することができる。
【００１９】
図２に示す情報記録／再生装置１０Ａは、光学的に読み取り可能な透過型情報記録マーク３１Ａとして情報が記録される透過型記録媒体層を有する光学的情報記録媒体３０Ａを介して、情報の記録／再生を行うもので、上記光学的情報記録媒体３０Ａの記録面全面に対して、情報の書き込み及び／又は読み取りを光学的に行うためのフォトセンサアレイ２１Ａからなる二次元ヘッド２０Ａと平面光源２２を備える。
【００２０】
この情報記録／再生装置１０Ａでは、光学的に読み取り可能な透過型情報記録マーク３１Ａ（ここでは、ＣＤ−ＲＯＭやＤＶＤのようなピット構造で微細な穴を用いたもの）として情報が記録される透過型記録媒体層を有する光学的情報記録媒体３０Ａを挟んで上記二次元ヘッド２０Ａと平面光源２２を対向させて配置した構造とすることにより、平面光源２２からの光が通ったものを「１」、通らないものを「０」として、上記二次元ヘッド２０Ａにより上記情報記録マーク３１Ａを読み取って情報の再生を行う。ただし、この構造において、ＣＤ−ＲＯＭのような穴の大きさを「１」と「０」で変化させ、通った光量によっても判別することはできる。
【００２１】
また、図３に示す情報記録／再生装置１０Ｂは、光学的に読み取り可能な反射型情報記録マーク３１Ｂとして情報が記録される反射型記録媒体層を有する光学的情報記録媒体３０Ｂを介して、情報の記録／再生を行うもので、上記光学的情報記録媒体３０Ｂの記録面全面に対して、情報の書き込み及び／又は読み取りを行うための発光ダイオード（又は半導体レーザー）が一体とされたフォトセンサアレイ２１Ｂからなる二次元ヘッド２０Ｂを備える。
【００２２】
この情報記録／再生装置１０Ｂでは、発光ダイオード（又は半導体レーザー）が一体とされたフォトセンサアレイ２１Ｂからなる二次元ヘッド２０Ｂにおいて、光（又はレーザー光）の反射光を検知することにより、上記情報記録マーク３１Ｂを読み取って情報の再生を行う。
【００２３】
また、図４に示す情報記録／再生装置１０Ｃは、電気的に読み取り可能な静電容量情報記録マーク３１Ｃとして情報が記録される静電容量型記録媒体層を有する静電型情報記録媒体３０Ｃを介して、情報の記録／再生を行うもので、上記光学的情報記録媒体３０Ｃの記録面全面に対して、情報の書き込み及び／又は読み取りを行うための静電容量センサアレイ２１Ｃからなる二次元ヘッド２０Ｃを備える。
【００２４】
上記静電型情報記録媒体３０Ｃでは、アルミニウムなどの導電体の素材に穴（ピット）を開けることにより、電気的に読み取り可能な静電容量情報記録マーク３１Ｃとして情報が記録される。
【００２５】
すなわち、この上記静電型情報記録媒体３０Ｃにおける情報読み出しの原理は、静電容量情報記録マーク３１Ｃすなわち穴（ピット）のある無しによる静電容量（寄生容量）の違いを静電容量センサアレイ２１Ｃからなる二次元ヘッド２０Ｃにて検出して読み出すものである。静電容量センサは、ダイナミックランダムアクセスメモリ（ＤＲＡＭ）のメモリセルを読み出す原理とほぼ同じ原理で情報を読み出すことができる。
【００２６】
さらに、図５に示す情報記録／再生装置１０Ｄは、磁気的に読み取り可能な磁性情報記録マーク３１Ｄとして情報が記録される磁気的記録媒体層を有する磁気的情報記録媒体３０Ｄを介して、情報の記録／再生を行うもので、上記磁気的情報記録媒体３０Ｄの記録面全面に対して、情報の書き込み及び／又は読み取りを行うための磁気センサアレイ２１Ｄからなる二次元ヘッド２０Ｄを備える。
【００２７】
この情報記録／再生装置１０Ｄにおいて、磁気的情報記録媒体３０Ｄとしては、磁気ディスクや磁気テープのような磁性体を用いる。この磁気的情報記録媒体３０Ｄにおける情報の読み出し原理は、磁性体に記録された磁性情報記録マーク３１Ｄを磁気センサアレイ２１Ｄからなる二次元ヘッド２０Ｄにて検出して読み出し又は書き込みするものである。磁気センサは、マグネチックランダムアクセスメモリ（ＭＲＡＭ）のメモリーセル（フィライトコアを微細にしたもの）を読み出し又は書き込みする原理とほぼ同じ原理で情報を読み書きすることができる。
【００２８】
そして、上述の如き情報記録媒体３０を介して情報の記録再生を行う情報記録／再生装置１０では、二次ヘッド２０を採用したことにより、上記情報記録媒体３０に対して高速ランダムアクセスを行うことができるので、例えば、図６に示すように、メイン情報(DATA)、次のスキャン方向の情報（スキャン方向情報）及びパリティにてクラスタを構成し、クラスタ単位で情報の書き込み／読み出しを行うようにすることによって、例えば図７に示すように、メディアのアドレス空間における先頭の読み出しアドレスを知らなければ、そのメディアからメイン情報を読み出すことができないようにすることができる。
【００２９】
【発明の効果】
以上説明したように、本発明によれば、二次元ヘッドにより、情報記録媒体の記録面全面に対して、情報の書き込み及び／又は読み取りを行う方式を採用することにより、上記情報記録媒体を正方形などの自由な形状にすることができ、しかも、高速ランダムアクセス性を確保することができ、ディスクを回転させるモータやピックアップを移動させるようなメカニズムも必要なくなるため、低消費電力で大容量・低コストかつコンパクトな情報記録／再生装置を実現することができる。そして、少なくともメイン情報及び次のスキャン方向の情報にて構成したクラスタ単位で情報の書き込み／読み出しを行うようにすることによって、メディアのアドレス空間における先頭の読み出しアドレスを知らなければ、そのメディアからメイン情報を読み出すことができないようにすることができる。
【００３０】
したがって、本発明によれば、大容量・低コスト・高速ランダムアクセス性・メカレスなどを可能にする情報記録媒体、情報再生方法、情報記録再生方法、情報再生装置並びに情報記録再生装置を提供することができる。
【図面の簡単な説明】
【図１】本発明を適用した情報記録／再生装置の構成例を示すブロック図である。
【図２】本発明に係る透過型情報記録／再生装置の構成例を示すブロック図である。
【図３】本発明に係る反射型情報記録／再生装置の構成例を示すブロック図である。
【図４】本発明に係る静電容量型情報記録／再生装置の構成例を示すブロック図である。
【図５】本発明に係る磁気的情報記録／再生装置の構成例を示すブロック図である。
【図６】上記情報記録／再生装置により記情報記録媒体に記録される情報のクラスタ構成を示す図である。
【図７】上記情報記録／再生装置におけるメイン情報の読み出しのためのスキャン方向を模式的に示す図である。
【符号の説明】
１０，１０Ａ，１０Ｂ，１０Ｃ，１０Ｄ情報記録／再生装置、２０，２０Ａ，２０Ｂ，２０Ｃ，２０Ｄ二次元ヘッド、２１Ａフォトセンサアレイ、２１Ｂフォトセンサアレイ、２１Ｃ静電容量センサアレイ、２１Ｄ磁気センサアレイ、２２平面光源、３０情報記録媒体、３０Ａ光学的情報記録媒体、３０Ｂ光学的情報記録媒体、３０Ｃ静電型情報記録媒体、３０Ｄ磁気的情報記録媒体、３１記録媒体層、３１Ａ透過型情報記録マーク、３１Ｂ反射型情報記録マーク、３１Ｃ静電容量情報記録マーク、３１Ｄ磁性情報記録マーク[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an information recording medium on which main information including various contents such as music and video is recorded, an information recording / reproducing method thereof, and an information recording / reproducing apparatus.
[0002]
[Prior art]
In recent years, computerized information on various contents such as music and video has been developed in recent years. Utilization is promoted by maintenance or improvement of processing speed or communication speed. Electronic information can be stored in a fixed storage means such as a hard disk or semiconductor memory (FLASH memory) provided in the device, or a magnetic tape, an optical disk, a magneto-optical disk, a magnetic disk, etc. It is recorded on a portable recording medium (hereinafter collectively referred to as an information recording medium), reproduced by an information reproducing apparatus or an information recording / reproducing apparatus (hereinafter collectively referred to as an information recording / reproducing apparatus), and recorded on an appropriate recording means. The
[0003]
[Problems to be solved by the invention]
Conventionally, a tape medium such as a magnetic tape is known as a large-capacity information recording medium. Disk media such as optical disks, magneto-optical disks, and magnetic disks are known as low-cost information recording media that can be accessed randomly. Furthermore, the semiconductor memory is known as an information recording medium that can perform high-speed random access and does not require a mechanism, that is, no mechanical parts.
[0004]
However, it has been difficult for the conventional technology to achieve both large capacity, low cost, high-speed random accessibility, and mechanicallessness.
[0005]
An object of the present invention is to provide an information recording medium capable of large capacity, low cost, high-speed random access, mechanicalless, etc., which could not be achieved by the above-described prior art, and recording and / or information using this information recording medium. An object is to provide an information recording method, an information reproducing method, an information recording / reproducing method, an information recording apparatus, an information reproducing apparatus, and an information recording / reproducing apparatus for performing reproduction.
[0006]
[Means for Solving the Problems]
The information recording medium according to the present invention has a recording medium layer on which information is recorded in units of clusters composed of at least main information and information in the next scanning direction as information recording marks readable by a two-dimensional reading head , Information is written / read out in cluster units composed of at least main information and information in the next scanning direction via the recording medium layer .
[0007]
Also, the information recording method according to the present invention provides information on the recording medium layer of the information recording medium in units of clusters composed of at least main information and information in the next scanning direction as information recording marks that can be read by the two-dimensional reading head. It is characterized by recording.
[0009]
Also, the information recording / reproducing method according to the present invention provides a recording medium layer of an information recording medium in which information is recorded in units of clusters composed of at least main information and information in the next scanning direction as information recording marks that can be read by a two-dimensional reading head. The information recording mark is read from the recording medium layer of the information recording medium by a two-dimensional reading head , and the information is reproduced in units of clusters constituted by at least main information and information in the next scanning direction. To do.
[0010]
The information recording apparatus according to the present invention includes a two-dimensional writing head, and information is recorded in units of clusters composed of at least main information and information in the next scanning direction as information recording marks that can be read by the two-dimensional reading head. Recording is performed on a recording medium layer of the recording medium.
[0011]
An information reproducing apparatus according to the present invention includes a two-dimensional reading head, reads an information recording mark from a recording medium layer of the information recording medium by the two-dimensional reading head, and uses at least main information and information in the next scanning direction. Information is reproduced in units of configured clusters .
[0012]
Furthermore, an information recording / reproducing apparatus according to the present invention includes a two-dimensional writing head and a two-dimensional reading head, and includes at least main information and information in the next scanning direction as information recording marks readable by the two-dimensional reading head. Information is recorded in units of clusters on the recording medium layer of the information recording medium by the two-dimensional writing head, and the information recording mark is read from the recording medium layer of the information recording medium by the two-dimensional reading head, and at least main information and next information are recorded. An information recording / reproducing apparatus that reproduces information in units of clusters configured by information in the scan direction .
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0014]
The present invention is applied to, for example, an information recording / reproducing apparatus 10 configured as shown in FIG.
[0015]
The information recording / reproducing apparatus 10 records / reproduces information via a square information recording medium 30, and writes and / or reads information on the entire recording surface of the information recording medium 30. A two-dimensional head 20 is provided.
[0016]
The square information recording medium 30 has a recording medium layer 31 on which information is recorded as an information recording mark on which information can be written / read by the two-dimensional head 20. As the information recording medium 30, as shown in FIG. 2, an optical information recording medium 30A having a transmissive recording medium layer on which information is recorded as an optically readable transmissive information recording mark 31A, shown in FIG. As shown in FIG. 4, an optical information recording medium 30B having a reflective recording medium layer on which information is recorded as an optically readable reflective information recording mark 31B, as shown in FIG. Magnetic information recording medium 30C having a capacitive recording medium layer on which information is recorded as recording mark 31C, or magnetic information recording information as magnetically readable magnetic information recording marks as shown in FIG. A magnetic information recording medium 30D having a recording medium layer can be used.
[0017]
In the information recording / reproducing apparatus 10 having such a structure, information is recorded on the recording medium layer 31 of the information recording medium 30 by the two-dimensional head 20 as information recording marks readable by the secondary head 20, and the information recording medium The information recording marks are read from the 30 recording medium layers 31 by the two-dimensional head 20 to reproduce information.
[0018]
Here, in this information recording / reproducing apparatus 10, the information recording medium 30 is adopted by adopting a method of writing and / or reading information on the entire recording surface of the information recording medium 30 by the two-dimensional head 20. Is not required to be a disc-shaped medium such as a conventional CD-ROM or DVD, can be formed into a free shape such as the above-mentioned square, and high-speed random accessibility can be ensured. In addition, since the media read / write device does not require a mechanism for moving a motor or pickup that rotates a disk such as a conventional CD-ROM or DVD, it is a low-power, large-capacity, low-cost, and compact medium. Can be realized.
[0019]
The information recording / reproducing apparatus 10A shown in FIG. 2 records information via an optical information recording medium 30A having a transmissive recording medium layer on which information is recorded as an optically readable transmissive information recording mark 31A. A two-dimensional head 20A composed of a photosensor array 21A for optically writing and / or reading information on the entire recording surface of the optical information recording medium 30A and a planar light source 22 Is provided.
[0020]
In this information recording / reproducing apparatus 10A, information is recorded as an optically readable transmissive information recording mark 31A (here, a pit structure such as a CD-ROM or DVD and using fine holes). By adopting a structure in which the two-dimensional head 20A and the planar light source 22 are arranged to face each other with an optical information recording medium 30A having a transmissive recording medium layer interposed therebetween, the light transmitted from the planar light source 22 passes through “1”. The information recording mark 31A is read by the two-dimensional head 20A, and the information is reproduced by setting “0” to the one that does not pass. However, in this structure, the size of a hole such as a CD-ROM can be changed between “1” and “0”, and the discrimination can also be made based on the amount of light passed through.
[0021]
Further, the information recording / reproducing apparatus 10B shown in FIG. 3 receives information via an optical information recording medium 30B having a reflective recording medium layer on which information is recorded as an optically readable reflective information recording mark 31B. A photosensor array in which a light emitting diode (or semiconductor laser) for writing and / or reading information is integrated with the entire recording surface of the optical information recording medium 30B. A two-dimensional head 20B composed of 21B is provided.
[0022]
In the information recording / reproducing apparatus 10B, the information is reflected by detecting reflected light of light (or laser light) in a two-dimensional head 20B including a photosensor array 21B in which a light emitting diode (or semiconductor laser) is integrated. Information is reproduced by reading the recording mark 31B.
[0023]
Also, the information recording / reproducing apparatus 10C shown in FIG. 4 includes an electrostatic information recording medium 30C having a capacitive recording medium layer on which information is recorded as an electrically readable electrostatic capacity information recording mark 31C. A two-dimensional head comprising a capacitance sensor array 21C for writing and / or reading information on the entire recording surface of the optical information recording medium 30C. 20C.
[0024]
In the electrostatic information recording medium 30C, information is recorded as an electrically readable capacitance information recording mark 31C by making a hole (pit) in a conductive material such as aluminum.
[0025]
That is, the principle of information reading in the electrostatic information recording medium 30C is that the capacitance information recording mark 31C, that is, the difference in capacitance (parasitic capacitance) due to the presence or absence of a hole (pit) is determined by the capacitance sensor array 21C. It is detected and read by a two-dimensional head 20C composed of Capacitance sensors can read information according to almost the same principle as that for reading a memory cell of a dynamic random access memory (DRAM).
[0026]
Furthermore, the information recording / reproducing apparatus 10D shown in FIG. 5 receives information via a magnetic information recording medium 30D having a magnetic recording medium layer on which information is recorded as a magnetically readable magnetic information recording mark 31D. For recording / reproducing, a two-dimensional head 20D comprising a magnetic sensor array 21D for writing and / or reading information is provided on the entire recording surface of the magnetic information recording medium 30D.
[0027]
In the information recording / reproducing apparatus 10D, a magnetic material such as a magnetic disk or a magnetic tape is used as the magnetic information recording medium 30D. The principle of reading information on the magnetic information recording medium 30D is that a magnetic information recording mark 31D recorded on a magnetic material is detected and read or written by a two-dimensional head 20D comprising a magnetic sensor array 21D. The magnetic sensor can read and write information according to almost the same principle as the principle of reading or writing a memory cell of a magnetic random access memory (MRAM) (with a fine core).
[0028]
In the information recording / reproducing apparatus 10 that records and reproduces information through the information recording medium 30 as described above, the information recording medium 30 is subjected to high-speed random access by adopting the secondary head 20. Therefore, for example, as shown in FIG. 6, a cluster is composed of main information (DATA), information on the next scan direction (scan direction information), and parity, and information is written / read in units of clusters. By doing so, for example, as shown in FIG. 7, the main information cannot be read from the medium without knowing the head read address in the address space of the medium.
[0029]
【The invention's effect】
As described above, according to the present invention, the information recording medium is square-shaped by adopting a method of writing and / or reading information on the entire recording surface of the information recording medium by a two-dimensional head. In addition, a high-speed random accessibility can be ensured, and a mechanism for moving the motor and the pickup that rotates the disk is not required. A cost and compact information recording / reproducing apparatus can be realized. Then, by writing / reading information in units of clusters composed of at least main information and information in the next scan direction, if the head read address in the address space of the medium is not known, the main information is read from the medium. It is possible to prevent information from being read.
[0030]
Therefore, according to the present invention, there are provided an information recording medium, an information reproducing method, an information recording / reproducing method, an information reproducing device, and an information recording / reproducing device that enable large capacity, low cost, high-speed random accessibility, mechanicallessness, and the like. Can do.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration example of an information recording / reproducing apparatus to which the present invention is applied.
FIG. 2 is a block diagram showing a configuration example of a transmissive information recording / reproducing apparatus according to the present invention.
FIG. 3 is a block diagram showing a configuration example of a reflective information recording / reproducing apparatus according to the present invention.
FIG. 4 is a block diagram showing a configuration example of a capacitive information recording / reproducing apparatus according to the present invention.
FIG. 5 is a block diagram showing a configuration example of a magnetic information recording / reproducing apparatus according to the present invention.
FIG. 6 is a diagram showing a cluster configuration of information recorded on a recording information recording medium by the information recording / reproducing apparatus.
FIG. 7 is a diagram schematically showing a scan direction for reading main information in the information recording / reproducing apparatus.
[Explanation of symbols]
10, 10A, 10B, 10C, 10D information recording / reproducing apparatus, 20, 20A, 20B, 20C, 20D two-dimensional head, 21A photosensor array, 21B photosensor array, 21C capacitance sensor array, 21D magnetic sensor array, 22 planar light source, 30 information recording medium, 30A optical information recording medium, 30B optical information recording medium, 30C electrostatic information recording medium, 30D magnetic information recording medium, 31 recording medium layer, 31A transmission type information recording mark, 31B Reflective information recording mark, 31C Capacitance information recording mark, 31D Magnetic information recording mark

Claims

An information recording mark that can be read by the two-dimensional reading head has a recording medium layer in which information is recorded in units of clusters composed of at least main information and information in the next scanning direction, and at least main information is recorded via the recording medium layer. An information recording medium in which information is written / read in units of clusters composed of information and information in the next scan direction .

An information recording method comprising: recording information on a recording medium layer of an information recording medium in units of clusters composed of at least main information and information in the next scanning direction as information recording marks readable by a two-dimensional reading head.

Information is recorded on the recording medium layer of the information recording medium as a data recording mark that can be read by the two-dimensional reading head at least in cluster units composed of main information and information in the next scanning direction, and the recording medium layer of the information recording medium An information recording / reproducing method characterized in that the information recording mark is read by a two-dimensional reading head and information is reproduced in units of clusters constituted by at least main information and information in the next scanning direction .

A two-dimensional writing head is provided, and information is recorded on a recording medium layer of the information recording medium in cluster units composed of at least main information and information in the next scanning direction as information recording marks that can be read by the two-dimensional reading head. A characteristic information recording apparatus.

An optical recording medium layer of an optical information recording medium comprising an optical two-dimensional writing head and information as a cluster unit comprising at least main information and information in the next scanning direction as an optically readable information recording mark The information recording apparatus according to claim 4, wherein the information recording apparatus records the information.

By the optical two-dimensional writing head, information is recorded in units of clusters composed of at least main information and information in the next scanning direction as optically readable transmission information recording marks. 6. The information recording apparatus according to claim 5, wherein recording is performed on a medium layer.

Reflective recording of an optical information recording medium by using the optical two-dimensional write head as a cluster unit composed of at least main information and information in the next scanning direction as an optically readable reflective information recording mark 6. The information recording apparatus according to claim 5, wherein recording is performed on a medium layer.

The electric two-write head, electrically readable electrostatic capacity information recording mark as at least the main information and the capacitive recording of the next scan direction of the information recording medium information in cluster unit configured by the information 5. The information recording apparatus according to claim 4, wherein recording is performed on a medium layer.

Information is recorded on the magnetic recording medium layer of the information recording medium by a magnetic two-dimensional write head as a cluster unit composed of at least main information and information in the next scanning direction as magnetically readable magnetic information recording marks. The information recording apparatus according to claim 4, wherein:

A two-dimensional reading head, and reading the information recording mark from the recording medium layer of the information recording medium by the two-dimensional reading head to reproduce information in units of clusters constituted by at least main information and information in the next scanning direction. A characteristic information reproducing apparatus.

An optical two-dimensional reading head is provided, and an optically readable information recording mark is read from the optical recording medium layer of the optical information recording medium by the optical two-dimensional reading head so that at least main information and the next scanning direction are read . 11. The information reproducing apparatus according to claim 10 , wherein information is reproduced in units of clusters composed of information.

The optical two-dimensional read head comprises a cluster constituted by reading at least main information and information in the next scanning direction by reading a transmissive information recording mark optically readable from a transmissive recording medium layer of an optical information recording medium. 12. The information reproducing apparatus according to claim 11, wherein information is reproduced in units.

The optical two-dimensional read head reads a reflective information recording mark that is optically readable from a reflective recording medium layer of an optical information recording medium, and is composed of at least main information and information in the next scanning direction. 12. The information reproducing apparatus according to claim 11, wherein information is reproduced in units.

Equipped with an electric two-dimensional reading head, which is configured by reading at least main information and information in the next scanning direction by reading a capacitance information recording mark that can be electrically read from the capacitance type recording medium layer of the information recording medium 11. The information reproducing apparatus according to claim 10 , wherein information is reproduced in units of clusters .

A magnetic two-dimensional reading head is provided, and magnetic information recording marks that are magnetically readable from the magnetic recording medium layer of the information recording medium are read to obtain information in units of clusters constituted by at least main information and information in the next scanning direction. The information reproducing apparatus according to claim 10, wherein the information reproducing apparatus reproduces the information.

A two-dimensional writing head and a two-dimensional reading head are provided, and information is recorded by the two-dimensional writing head using at least main information and information in the next scanning direction as information recording marks that can be read by the two-dimensional reading head. The information is recorded on the recording medium layer of the information recording medium, and the information recording mark is read from the recording medium layer of the information recording medium by the two-dimensional reading head, and is composed of at least main information and information in the next scanning direction. An information recording / reproducing apparatus for reproducing information.