JPH0268324U - - Google Patents
Info
- Publication number
- JPH0268324U JPH0268324U JP14650988U JP14650988U JPH0268324U JP H0268324 U JPH0268324 U JP H0268324U JP 14650988 U JP14650988 U JP 14650988U JP 14650988 U JP14650988 U JP 14650988U JP H0268324 U JPH0268324 U JP H0268324U
- Authority
- JP
- Japan
- Prior art keywords
- optical disk
- switch
- reproducing
- turned
- disk device
- 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
- 230000003287 optical effect Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Optical Head (AREA)
Description
第１図は本考案の一実施例を示す要部構成図、
第２図は各部の動作波形を示す図、第３図、第５
図は本考案の他の実施例を示す要部構成図、第４
図、第６図は和演算回路の出力波形を示す図、第
７図は光デイスク装置の従来構成例を示す図であ
る。
８，９…フオトダイオード、１０，１１…光信
号検出回路、１２…和演算回路、１３…差演算回
路、ＳＷ１，ＳＷ２…スイツチ。
FIG. 1 is a main part configuration diagram showing an embodiment of the present invention.
Figure 2 shows the operating waveforms of each part, Figure 3, Figure 5.
The figure is a main part configuration diagram showing another embodiment of the present invention.
6 is a diagram showing the output waveform of the sum calculation circuit, and FIG. 7 is a diagram showing an example of the conventional configuration of an optical disk device. 8, 9... Photodiode, 10, 11... Optical signal detection circuit, 12... Sum calculation circuit, 13... Difference calculation circuit, SW1, SW2... Switch.
Claims (1)
いて、光デイスクからの反射信号を再生する再生
回路内に、再生回路を構成するアンプの入力段に
入力を所定電位と接続するためのスイツチを設け
、外部からの制御信号により再生時には前記スイ
ツチをオフに、記録時または消去時にはオンにす
るように構成したことを特徴とする光デイスク装
置。 In an optical disk device capable of recording and reproducing signals, a reproducing circuit for reproducing signals reflected from the optical disk is provided with a switch for connecting an input to a predetermined potential at an input stage of an amplifier constituting the reproducing circuit, An optical disk device characterized in that the switch is configured to be turned off during playback and turned on during recording or erasure by an external control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14650988U JPH0268324U (en) | 1988-11-09 | 1988-11-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14650988U JPH0268324U (en) | 1988-11-09 | 1988-11-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0268324U true JPH0268324U (en) | 1990-05-23 |
Family
ID=31416066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14650988U Pending JPH0268324U (en) | 1988-11-09 | 1988-11-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0268324U (en) |
-
1988
- 1988-11-09 JP JP14650988U patent/JPH0268324U/ja active Pending
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