JP2949757B2 - Information playback device - Google Patents
Information playback deviceInfo
- Publication number
- JP2949757B2 JP2949757B2 JP3863890A JP3863890A JP2949757B2 JP 2949757 B2 JP2949757 B2 JP 2949757B2 JP 3863890 A JP3863890 A JP 3863890A JP 3863890 A JP3863890 A JP 3863890A JP 2949757 B2 JP2949757 B2 JP 2949757B2
- Authority
- JP
- Japan
- Prior art keywords
- information
- storage circuit
- toc information
- host
- circuit
- 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.)
- Expired - Fee Related
Links
Landscapes
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は音楽またはデータまたは映像またはこれらの
情報を混合して記録している再生媒体を再生するCD−RO
Mプレーヤ等の情報再生装置に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CD-RO for reproducing music, data, video, or a reproduction medium in which such information is mixed and recorded.
The present invention relates to an information reproducing device such as an M player.
従来の技術 従来の情報再生装置であるCD−ROMプレーヤを図面を
用いて説明する。第３図は従来例のCD−ROMプレーヤの
ブロックダイヤグラム、第４図は同じくその動作説明図
である。第３図において１は再生媒体としてのディス
ク、２は光学ヘッド、３は再生媒体１を再生する再生回
路、４はTOC情報およびその他のデータを記憶する記憶
回路、５はホストとコマンド・データの授受を行う通信
回路、６はホスト、７は通信回路とホストとの間の信号
バスである。2. Description of the Related Art A conventional information reproducing apparatus, ie, a CD-ROM player will be described with reference to the drawings. FIG. 3 is a block diagram of a conventional CD-ROM player, and FIG. 4 is an explanatory view of the operation of the same. In FIG. 3, 1 is a disk as a reproducing medium, 2 is an optical head, 3 is a reproducing circuit for reproducing the reproducing medium 1, 4 is a storage circuit for storing TOC information and other data, 5 is a host and command data. A communication circuit for transmitting and receiving, 6 is a host, and 7 is a signal bus between the communication circuit and the host.
以上のような各構成要素からなる従来のCD−ROMプレ
ーヤについて以下各構成要素相互の関係と動作を説明す
る。通信回路再生媒体１のリードインエリアに記録され
たサブコードＱ信号の情報｛以下TOC（Table of Conten
ts）情報と呼ぶ｝の転送を要求する指令を受け取ると、
再生回路３はリードインエリアの再生を行い、記憶回路
４はリードインエリアに記録されているTOC情報を全て
記憶し、その後記憶回路４の情報を通信回路５がホスト
へ転送するという動作を行って、TOC情報の転送要求の
処理を終了していた。Hereinafter, the relationship between the components and the operation of the conventional CD-ROM player including the above components will be described. Information of the subcode Q signal recorded in the lead-in area of the communication circuit reproducing medium 1 {hereinafter TOC (Table of Content)
ts) Upon receiving a command requesting the transfer of｝ called information,
The reproduction circuit 3 reproduces the lead-in area, the storage circuit 4 stores all the TOC information recorded in the lead-in area, and then the communication circuit 5 transfers the information of the storage circuit 4 to the host. Thus, the processing of the transfer request of the TOC information has been completed.
発明が解決しようとする課題 しかしながら上記の方法によると、記憶回路４の記憶
領域がTOC情報の格納のために多量に必要とされるた
め、限定された記憶回路４の容量の中で再生回路３より
得られる他の情報の記憶領域や、通信回路５より得られ
る制御に使う情報の記憶領域が減少し、情報再生装置と
しての他の多くの制御が行えなくなり、製品としての性
能が全体的に低下するという課題を有していた。However, according to the above-described method, since the storage area of the storage circuit 4 is required in a large amount for storing TOC information, the reproduction circuit 3 has a limited capacity in the storage circuit 4. The storage area for other information obtained from the communication circuit 5 and the storage area for information used for control obtained from the communication circuit 5 are reduced, so that many other controls as an information reproducing apparatus cannot be performed. There was a problem that it decreased.
本発明はTOC情報の転送を要求する指令に対して用い
る記憶回路の記憶領域を少なく抑えることにより、他の
情報の記憶領域の制約を少なくし、情報再生装置として
の性能を低下させることなく、あらゆる再生媒体の全て
のTOC情報を前記指令に対して転送可能とすることを目
的とする。The present invention reduces the storage area of the storage circuit used for a command requesting the transfer of TOC information, thereby reducing the restriction on the storage area of other information, without lowering the performance as an information reproducing apparatus. An object of the present invention is to enable transfer of all TOC information of any reproduction medium in response to the command.
課題を解決するための手段 この目的を達成するために本発明の情報再生装置は、
再生媒体を再生する再生回路と、再生媒体のTOC情報を
一定曲数分記憶する記憶回路と、前記TOC情報の内容を
調べ前記記憶回路の記憶曲数と比較を行う比較回路とホ
ストとコマンド・データの授受を行う通信回路とを有
し、TOC情報の量が記憶回路の記憶容量を超えるときは
記憶回路への記憶・ホストへの転送動作を複数回に分け
て行うという構成を有する。Means for Solving the Problems In order to achieve this object, an information reproducing apparatus of the present invention comprises:
A reproduction circuit for reproducing the reproduction medium; a storage circuit for storing a certain number of pieces of TOC information of the reproduction medium; a comparison circuit for examining the contents of the TOC information and comparing the content with the number of pieces of music stored in the storage circuit; A communication circuit for exchanging data, and when the amount of TOC information exceeds the storage capacity of the storage circuit, the operation of storing the data in the storage circuit and transferring the data to the host is performed a plurality of times.
作用 本発明の情報再生装置は以上のような構成によってホ
ストよりTOC情報の転送を要求する指令を受けると、初
めに比較回路にて最初の曲番と最後の曲番を調べ、つぎ
に転送するTOC情報の曲数が前記記憶回路の曲数以下の
ときは全てのTOC情報を前記記憶回路に記憶し、その後
ホストへの転送動作を行ってTOC情報の転送を終了し、
転送するTOC情報の曲数が前記記憶回路の曲数より多い
ときは、前記記憶回路の曲数分の情報を前記記憶回路に
記憶し終わった後、前記記憶回路の情報をホストに転送
し、さらに順次情報の前記記憶回路への記憶・ホストへ
の転送動作を所定曲数分行って、再生媒体のTOC情報の
転送を終了するので、TOC情報の記憶に要する記憶領域
を少なくすることができる。Operation When the information reproducing apparatus of the present invention receives a command for requesting the transfer of TOC information from the host with the above configuration, the comparison circuit first checks the first music number and the last music number, and then transfers it. When the number of songs in the TOC information is equal to or less than the number of songs in the storage circuit, all the TOC information is stored in the storage circuit, and then a transfer operation to the host is performed to complete the transfer of the TOC information,
When the number of songs in the TOC information to be transferred is larger than the number of songs in the storage circuit, after storing the information for the number of songs in the storage circuit in the storage circuit, the information in the storage circuit is transferred to the host. Furthermore, since the operation of storing the information in the storage circuit and transferring the information to the host is performed a predetermined number of times and the transfer of the TOC information of the reproduction medium is completed, the storage area required for storing the TOC information can be reduced. .
実施例 以下図面を用いて本発明の情報再生装置の一実施例と
してのCD−ROMプレーヤを説明する。第１図はCD−ROMプ
レーヤのブロックダイヤグラム、第２図は同じくその動
作説明図である。なお従来例と同一部分は同一符号を付
与して説明を省略する。本実施例のCD−ROMプレーヤに
おける従来例のものと大きく異なる点は、従来例のもの
よりTOC情報記憶量を制約された記憶回路4aと、TOC情報
の内容を調べTOC情報に含まれている曲数と、記憶回路4
aに記憶可能な記憶曲数の比較を行う比較回路８を有す
ることである。Embodiment A CD-ROM player as an embodiment of the information reproducing apparatus of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a CD-ROM player, and FIG. The same parts as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted. The major difference between the CD-ROM player of the present embodiment and that of the conventional example is that the TOC information storage amount is more restricted than that of the conventional example, and the contents of the TOC information are examined and included in the TOC information. Number of songs and storage circuit 4
a comparison circuit 8 for comparing the number of music pieces that can be stored in a.
以上のように構成された本発明の一実施例のCD−ROM
プレーヤについて、以下その動作を説明すると、通信回
路５がホスト６よりTOC情報の転送を要求する指令を受
け取ると再生回路３はリードインエリアの再生を行い、
比較回路８は最初の曲番と最後の曲番を調べ転送するTO
C情報の曲数と、記憶回路4aに記憶可能な記憶曲数の比
較を行う。ここで転送するTOC情報の曲数が、記憶回路4
aに記憶可能な記憶曲数以下のときは全てのTOC情報を記
憶回路4aに記憶し、その後ホストへの転送動作を行って
TOC情報の転送を終了する。また転送するTOC情報の曲数
が記憶回路4aの記憶可能曲数より大きいときは、まず記
憶回路4aの記憶可能曲数分の情報を記憶回路4aに記憶し
終わった後、記憶回路4aの情報をホストに転送する。さ
らにその後、順次にTOC情報の記憶回路4aへの記憶動作
・ホストへの転送動作を所定曲数分ずつ行って、再生デ
ィスクのTOC情報の転送を完了する。CD-ROM of one embodiment of the present invention configured as described above
The operation of the player will be described below. When the communication circuit 5 receives a command requesting the transfer of TOC information from the host 6, the reproducing circuit 3 reproduces the lead-in area.
The comparison circuit 8 checks the first track number and the last track number and transfers the TO
The number of music pieces of the C information is compared with the number of music pieces that can be stored in the storage circuit 4a. The number of songs in the TOC information transferred here is
If the number of stored songs is less than the number of songs that can be stored in a, store all TOC information in the storage circuit 4a, and then perform the transfer operation to the host.
End transfer of TOC information. When the number of music pieces of the TOC information to be transferred is larger than the number of music pieces that can be stored in the storage circuit 4a, first, information for the number of music pieces that can be stored in the storage circuit 4a is stored in the storage circuit 4a, and then the information in the storage circuit 4a is stored. To the host. Thereafter, the operation of storing the TOC information in the storage circuit 4a and the operation of transferring the TOC information to the host are sequentially performed for a predetermined number of songs, thereby completing the transfer of the TOC information of the reproduction disk.
なお、CD−ROMプレーヤの例で説明したが、媒体はCD
でもLD（レーザーディスク）でも同様の技術思想のもの
に適用できる。Although the explanation has been given using the example of a CD-ROM player, the medium is a CD-ROM player.
However, LD (laser disc) can be applied to the same technical idea.
上記の説明で曲数とあるのは必ずしも音楽のみでな
く、一つのまとまった音響・データ・映像の単位を一曲
と考えればよいものである。In the above description, the number of music pieces is not limited to music, and one unit of sound, data, and video may be considered as one music piece.
発明の効果 本発明は以上の説明で明らかなように、TOC情報の転
送を要求する指令に対して用いる記憶回路の記憶領域を
少なく抑えることが可能となり、限られた記憶容量の中
で他の情報の記憶領域に与える制約を少なくすることが
でき、情報再生装置としての性能の低下がなくなる。ま
たTOC情報の転送を要求する指令に対して、あらゆる再
生媒体の全てのTOC情報をホストにもれなく転送するこ
とが可能となるものである。As is clear from the above description, the present invention makes it possible to reduce the storage area of the storage circuit used for the command requesting the transfer of the TOC information, and to reduce the storage area of the storage circuit within the limited storage capacity. Restrictions on the information storage area can be reduced, and the performance of the information reproducing apparatus does not deteriorate. In addition, in response to a command requesting the transfer of TOC information, it becomes possible to transfer all TOC information of any playback medium to the host without exception.
第１図は本発明の情報再生装置としての一実施例である
CD−ROMプレーヤのブロックダイヤグラム、第２図は同
プレーヤの動作の説明図、第３図は従来の情報再生装置
としてのCD−ROMプレーヤのブロックダイヤグラム、第
４図は同プレーヤの動作の説明図である。 １……再生媒体、２……光学ヘッド、３……再生回路、
4a……記憶回路、５……通信回路、６……ホスト、７…
…信号バス、８……比較回路。FIG. 1 shows an embodiment of an information reproducing apparatus according to the present invention.
FIG. 2 is a block diagram of a CD-ROM player, FIG. 2 is an explanatory diagram of the operation of the player, FIG. 3 is a block diagram of a CD-ROM player as a conventional information reproducing apparatus, and FIG. 4 is an explanatory diagram of the operation of the player. It is. 1 ... reproduction medium, 2 ... optical head, 3 ... reproduction circuit,
4a: memory circuit, 5: communication circuit, 6: host, 7 ...
... Signal bus, 8 ... Comparison circuit.
Claims (1)
のリードインエリアに記録されたTOC情報を一定曲数分
記憶する記憶回路と、前記TOC情報の内容を調べ前記記
憶回路の記憶曲数と比較を行う比較回路と、ホストとコ
マンド・データの授受を行う通信回路とを有し、ホスト
よりTOC情報の転送を要求する指令を受けたとき、前記
比較回路にて最初の曲番と最後の曲番を調べ、つぎに転
送するTOC情報の曲数が前記記憶回路の曲数以下のとき
は全てのTOC情報を前記記憶回路に記憶し、その後ホス
トへの転送動作を行ってTOC情報の転送を終了し、転送
するTOC情報の曲数が前記記憶回路の曲数より大きいと
きは、前記記憶回路の曲数分の情報を前記記憶回路に記
憶し終わった後、前記記憶回路の情報をホストに転送
し、さらに順次、情報の前記記憶回路への記憶・ホスト
への転送動作を所定曲数分ずつ行って、再生媒体の全TO
C情報の転送を終了する情報再生装置。1. A reproduction circuit for reproducing a reproduction medium, a storage circuit for storing a certain number of pieces of TOC information recorded in a lead-in area of the reproduction medium, and a content stored in the storage circuit for examining the contents of the TOC information. And a communication circuit for transmitting and receiving command data to and from the host.When a command for requesting the transfer of TOC information is received from the host, the first music number and The last track number is checked, and when the number of tracks of the TOC information to be transferred next is equal to or less than the number of tracks in the storage circuit, all the TOC information is stored in the storage circuit, and then the transfer operation to the host is performed to execute the TOC information. When the number of songs in the TOC information to be transferred is greater than the number of songs in the storage circuit, the information for the number of songs in the storage circuit is stored in the storage circuit, and then the information in the storage circuit is terminated. To the host, and further sequentially stores the information The transfer operation to the memory host performed by a predetermined piece number of a to all TO regeneration medium
An information playback device that terminates the transfer of C information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3863890A JP2949757B2 (en) | 1990-02-20 | 1990-02-20 | Information playback device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3863890A JP2949757B2 (en) | 1990-02-20 | 1990-02-20 | Information playback device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03242891A JPH03242891A (en) | 1991-10-29 |
| JP2949757B2 true JP2949757B2 (en) | 1999-09-20 |
Family
ID=12530786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3863890A Expired - Fee Related JP2949757B2 (en) | 1990-02-20 | 1990-02-20 | Information playback device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2949757B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010075393A (en) * | 1999-07-27 | 2001-08-09 | 이데이 노부유끼 | Information processing method, information processing device, and medium |
| JP2001222504A (en) * | 1999-12-03 | 2001-08-17 | Canon Inc | Electronic equipment, control method for the same and recording medium |
-
1990
- 1990-02-20 JP JP3863890A patent/JP2949757B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03242891A (en) | 1991-10-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |