JPH0481211U - - Google Patents
Info
- Publication number
- JPH0481211U JPH0481211U JP12428390U JP12428390U JPH0481211U JP H0481211 U JPH0481211 U JP H0481211U JP 12428390 U JP12428390 U JP 12428390U JP 12428390 U JP12428390 U JP 12428390U JP H0481211 U JPH0481211 U JP H0481211U
- Authority
- JP
- Japan
- Prior art keywords
- servo circuit
- music
- circuit
- speed data
- preamplifier
- 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
Links
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
第１図は本考案による高速読出しＣＤ−ＲＯＭ
デコーダ装置１１′の構成を示している。第２図
は本考案による高速読出し及び音楽再生兼用ＣＤ
−ＲＯＭデコーダ装置１１″の構成を示している
。第３図は本考案による前置増幅器４′、フオー
カスサーボ回路５′そしてトラツキングサーボ回
路６′に周波数特性を示してる。第４図は従来Ａ
と本考案Ｂによる傷検出特性を示している。第５
図は従来のＣＤ−ＲＯＭデコーダ装置１１の構成
を示している。
１……デイスク、２……デイスクモータ、３…
…光ピツクアツプ、４，４′……前置増幅器、５
，５′……フオーカスサーボ回路、６，６′……
トラツキングサーボ回路、７，７′……回転制御
回路、８……デジタル信号処理回路（ＤＳＰ）、
９……システム制御回路、１０……ＲＯＭデコー
ダ、１１，１１′，１１″……ＣＤ−ＲＯＭデコ
ーダ装置、１２……ホストシステム、１３……オ
ーデイオシステム、１４，１５，１６，１７……
スイツチ回路。
Figure 1 shows a high-speed read CD-ROM according to the present invention.
The configuration of a decoder device 11' is shown. Figure 2 shows a CD for high-speed reading and music playback according to the present invention.
-The configuration of the ROM decoder device 11'' is shown. FIG. 3 shows the frequency characteristics of the preamplifier 4', the focus servo circuit 5', and the tracking servo circuit 6' according to the present invention. FIG. Conventional A
This shows the flaw detection characteristics of the present invention B. Fifth
The figure shows the configuration of a conventional CD-ROM decoder device 11. As shown in FIG. 1... Disc, 2... Disc motor, 3...
...Optical pickup, 4,4'...Preamplifier, 5
, 5'... Focus servo circuit, 6, 6'...
Tracking servo circuit, 7, 7'...Rotation control circuit, 8...Digital signal processing circuit (DSP),
9...System control circuit, 10...ROM decoder, 11, 11', 11''...CD-ROM decoder device, 12...Host system, 13...Audio system, 14, 15, 16, 17...
switch circuit.
Claims (1)
た前置増幅器４′、フオーカスサーボ回路５′そ
してトラツキングサーボ回路６′及び音楽再生時
の数倍でデイスクモータ２を回転させる回転制御
回路７′を有することを特徴とする高速データ読
出しＣＤ−ＲＯＭデコーダ装置１１′。 ２ 音楽再生時の数倍に高域周波数領域を拡張し
た前置増幅器４′、フオーカスサーボ回路５′そ
してトラツキングサーボ回路６′及び音楽再生時
の数倍でデイスクモータ２を回転させる回転制御
回路７′と、それに対応する音楽再生時の前置増
幅器４、フオーカスサーボ回路５そしてトラツキ
ングサーボ回路６及び音楽再生時のデイスクモー
タ２を回転させる回転制御回路７を有し、さらに
デイスク１のサブコードにより高速データ読出し
又は音楽再生用にそれらを切り換える切り換え手
段１４から１７を有することを特徴とする高速デ
ータ読出し及び音楽再生兼用ＣＤ−ＲＯＭデコー
ダ装置１１″。 ３ デイスク上に傷等の障害を検出した時、当該
切り換え手段１４から１７を音楽再生用へ切り換
えることを特徴とする請求項２記載の高速データ
読出し及び音楽再生兼用ＣＤ−ＲＯＭデコーダ装
置１１″。[Claims for Utility Model Registration] 1. A preamplifier 4', a focus servo circuit 5', a tracking servo circuit 6', which expands the high frequency range several times as much as when playing music, and A high-speed data reading CD-ROM decoder device 11' characterized by having a rotation control circuit 7' for rotating a disk motor 2. 2. A preamplifier 4' that expands the high frequency range several times as much as when playing music, a focus servo circuit 5', a tracking servo circuit 6', and a rotation control that rotates the disk motor 2 several times as much as when playing music. It has a circuit 7', a corresponding preamplifier 4, a focus servo circuit 5, a tracking servo circuit 6 during music reproduction, and a rotation control circuit 7 for rotating the disk motor 2 during music reproduction. A CD-ROM decoder device 11'' for high-speed data reading and music playback, characterized in that it has switching means 14 to 17 for switching between high-speed data readout and music playback according to subcodes. 3. Obstacles such as scratches on the disk. 3. The CD-ROM decoder device 11'' for high-speed data reading and music reproduction as claimed in claim 2, wherein the switching means 14 to 17 are switched to a mode for music reproduction when detecting this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12428390U JPH0481211U (en) | 1990-11-28 | 1990-11-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12428390U JPH0481211U (en) | 1990-11-28 | 1990-11-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0481211U true JPH0481211U (en) | 1992-07-15 |
Family
ID=31871942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12428390U Pending JPH0481211U (en) | 1990-11-28 | 1990-11-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0481211U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06150524A (en) * | 1992-10-30 | 1994-05-31 | Fujitsu Ltd | Small optical disc automatic start method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6040028B2 (en) * | 1981-08-24 | 1985-09-09 | ヤマハ株式会社 | automatic composer |
| JPS61196465A (en) * | 1985-02-25 | 1986-08-30 | Fujitsu Ltd | Optical disk device |
| JPS62173629A (en) * | 1986-01-28 | 1987-07-30 | Matsushita Electric Ind Co Ltd | Optical recording and reproducing device |
| JPS633573A (en) * | 1986-06-24 | 1988-01-08 | Matsushita Electric Ind Co Ltd | CD subcode adapter |
| JPS63255828A (en) * | 1987-04-10 | 1988-10-24 | Matsushita Electric Ind Co Ltd | optical recording and reproducing device |
| JPH01107323A (en) * | 1987-10-21 | 1989-04-25 | Matsushita Graphic Commun Syst Inc | Optical disk device |
-
1990
- 1990-11-28 JP JP12428390U patent/JPH0481211U/ja active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6040028B2 (en) * | 1981-08-24 | 1985-09-09 | ヤマハ株式会社 | automatic composer |
| JPS61196465A (en) * | 1985-02-25 | 1986-08-30 | Fujitsu Ltd | Optical disk device |
| JPS62173629A (en) * | 1986-01-28 | 1987-07-30 | Matsushita Electric Ind Co Ltd | Optical recording and reproducing device |
| JPS633573A (en) * | 1986-06-24 | 1988-01-08 | Matsushita Electric Ind Co Ltd | CD subcode adapter |
| JPS63255828A (en) * | 1987-04-10 | 1988-10-24 | Matsushita Electric Ind Co Ltd | optical recording and reproducing device |
| JPH01107323A (en) * | 1987-10-21 | 1989-04-25 | Matsushita Graphic Commun Syst Inc | Optical disk device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06150524A (en) * | 1992-10-30 | 1994-05-31 | Fujitsu Ltd | Small optical disc automatic start method |
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