JPS62120467U - - Google Patents
Info
- Publication number
- JPS62120467U JPS62120467U JP607686U JP607686U JPS62120467U JP S62120467 U JPS62120467 U JP S62120467U JP 607686 U JP607686 U JP 607686U JP 607686 U JP607686 U JP 607686U JP S62120467 U JPS62120467 U JP S62120467U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- optical disc
- output
- playback device
- digital audio
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims description 9
- 239000013078 crystal Substances 0.000 claims description 3
- 230000005236 sound signal Effects 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000001228 spectrum Methods 0.000 description 1
Landscapes
- Rotational Drive Of Disk (AREA)
Description
第1図は本考案による光学デイスク再生装置の
一実施例の構成を示すブロツク図、第2図は第1
図の実施例の要部の具体的構成を示す結線図、第
3図は本考案の説明に供するスペクトル図、第4
図は従来の光学式ビデオデイスクのデジタル音声
信号アダプタの構成例を示すブロツク図、第5図
は本考案の説明に供する光学デイスク再生装置の
構成例を示すブロツク図である。
22AはEFM復調・信号処理回路、23は位
相比較回路、24A,34Aは能動低域フイルタ
、25は水晶発振回路、31は光学ピツクアツプ
、36はスピンドルモータである。
FIG. 1 is a block diagram showing the configuration of an embodiment of an optical disc playback device according to the present invention, and FIG.
A wiring diagram showing the specific configuration of the main part of the embodiment shown in the figure, FIG. 3 is a spectrum diagram for explaining the present invention, and FIG.
This figure is a block diagram showing an example of the configuration of a conventional digital audio signal adapter for an optical video disc, and FIG. 5 is a block diagram showing an example of the configuration of an optical disc playback device used to explain the present invention. 22A is an EFM demodulation/signal processing circuit, 23 is a phase comparison circuit, 24A and 34A are active low-pass filters, 25 is a crystal oscillation circuit, 31 is an optical pickup, and 36 is a spindle motor.
Claims (1)
されたデジタル音声信号に基く信号と、マスタク
ロツク発生用の水晶発振回路の分周出力とが供給
される位相比較回路を備え、該位相比較回路の出
力により上記光学デイスクを駆動するモータをサ
ーボ制御するようにした光学デイスク再生装置に
おいて、 外部のデジタル音声信号に基く信号が上記位相
比較回路に供給されるときは、 上記水晶発振回路が上記位相比較回路の出力に
より電圧制御されるように切り換えられて成る光
学デイスク再生装置。[Claims for Utility Model Registration] A phase comparison circuit is provided, which is supplied with a signal based on a digital audio signal reproduced from an optical disk by an optical pickup and a frequency-divided output of a crystal oscillation circuit for generating a master clock. In an optical disc playback device in which a motor for driving the optical disc is servo-controlled by the output of the circuit, when a signal based on an external digital audio signal is supplied to the phase comparator circuit, the crystal oscillator circuit operates as described above. An optical disc playback device that is switched to be voltage controlled by the output of a phase comparator circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP607686U JPH0454603Y2 (en) | 1986-01-20 | 1986-01-20 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP607686U JPH0454603Y2 (en) | 1986-01-20 | 1986-01-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS62120467U true JPS62120467U (en) | 1987-07-30 |
JPH0454603Y2 JPH0454603Y2 (en) | 1992-12-22 |
Family
ID=30788250
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP607686U Expired JPH0454603Y2 (en) | 1986-01-20 | 1986-01-20 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0454603Y2 (en) |
-
1986
- 1986-01-20 JP JP607686U patent/JPH0454603Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPH0454603Y2 (en) | 1992-12-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS62120467U (en) | ||
JPS62170076A (en) | Disk reproducing device | |
JPS5968872A (en) | Servo circuit | |
JP2570202B2 (en) | Optical disc player | |
US4577243A (en) | Control signal generating circuit for a magnetic recording and/or reproducing apparatus | |
JPH0371452U (en) | ||
JPS62257676A (en) | Compact disk player | |
JPH0371453U (en) | ||
JPS6032161A (en) | Reproducer of digital signal | |
JPS6063773A (en) | Disk player | |
JPS6245335Y2 (en) | ||
JPS6093606A (en) | Magnetic recording and reproducing device | |
JPH0697541B2 (en) | Digital information demodulator | |
JP2788585B2 (en) | Spindle servo circuit of optical disk playback device | |
JPS6346903B2 (en) | ||
JPH0317481Y2 (en) | ||
JPH0722769Y2 (en) | Dropout compensation circuit | |
JPS643261Y2 (en) | ||
JPS59173492U (en) | motor drive circuit | |
JPS6140761U (en) | PLL circuit | |
JPH03102159U (en) | ||
JPS6464168A (en) | Disk reproducing device | |
JPS5872747U (en) | Cabstan speed control device | |
JPS6333231B2 (en) | ||
JPH0212764U (en) |