JPH0246961U - - Google Patents
Info
- Publication number
- JPH0246961U JPH0246961U JP12247788U JP12247788U JPH0246961U JP H0246961 U JPH0246961 U JP H0246961U JP 12247788 U JP12247788 U JP 12247788U JP 12247788 U JP12247788 U JP 12247788U JP H0246961 U JPH0246961 U JP H0246961U
- Authority
- JP
- Japan
- Prior art keywords
- reverse rotation
- rotation voltage
- playback device
- applying means
- time
- 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
- 238000010586 diagram Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Rotational Drive Of Disk (AREA)
Description
第１図は、この考案の一実施例を示す回路図で
、第４図のドライバ２２の具体回路を示すもので
ある。第２図、第３図は、それぞれ従来の逆回転
電圧を示す波形図である。第４図は、この考案が
適用されたＣＤプレーヤのデイスク回転制御の概
略を示すブロツク図である。第５図は、第１図の
回路の動作を示す波形図である。第６図〜第９図
は、それぞれこの考案による逆回転電圧の他の実
施例を示す波形図である。
１０……光デイスク、１２……デイスクモータ
、２０……デイスク回転サーボ回路（ブレーキ回
路）、２２……ドライバ（逆回転電圧印加手段）
、２８……時定数回路。
FIG. 1 is a circuit diagram showing an embodiment of this invention, and shows a specific circuit of the driver 22 shown in FIG. FIGS. 2 and 3 are waveform charts showing conventional reverse rotation voltages, respectively. FIG. 4 is a block diagram schematically showing the disk rotation control of a CD player to which this invention is applied. FIG. 5 is a waveform diagram showing the operation of the circuit of FIG. 1. FIGS. 6 to 9 are waveform charts showing other embodiments of the reverse rotation voltage according to this invention. 10... Optical disk, 12... Disk motor, 20... Disk rotation servo circuit (brake circuit), 22... Driver (reverse rotation voltage application means)
, 28... time constant circuit.
Claims (1)
回転電圧を印加し、信号変化が所定時間生じない
ことを検出して前記逆回転電圧の印加を停止する
デイスク再生装置のブレーキ回路において、 前記逆回転電圧印加手段が前記逆回転電圧の実
効値を時間とともに増大させるようにしたことを
特徴とするデイスク再生装置のブレーキ回路。[Claims for Utility Model Registration] A brake for a disk playback device that applies a reverse rotation voltage to a disk motor by a reverse rotation voltage applying means, and stops application of the reverse rotation voltage upon detecting that no signal change occurs for a predetermined period of time. A brake circuit for a disc playback device, characterized in that the reverse rotation voltage applying means increases the effective value of the reverse rotation voltage with time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12247788U JPH0246961U (en) | 1988-09-19 | 1988-09-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12247788U JPH0246961U (en) | 1988-09-19 | 1988-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0246961U true JPH0246961U (en) | 1990-03-30 |
Family
ID=31370448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12247788U Pending JPH0246961U (en) | 1988-09-19 | 1988-09-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0246961U (en) |
-
1988
- 1988-09-19 JP JP12247788U patent/JPH0246961U/ja active Pending
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