JPH0398756U - - Google Patents
Info
- Publication number
- JPH0398756U JPH0398756U JP732790U JP732790U JPH0398756U JP H0398756 U JPH0398756 U JP H0398756U JP 732790 U JP732790 U JP 732790U JP 732790 U JP732790 U JP 732790U JP H0398756 U JPH0398756 U JP H0398756U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- pass filter
- shaping circuit
- optical
- switch
- 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 6
- 238000007493 shaping process Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Description
第１図はこの考案の実施例である光デイスクプ
レーヤのＲＦ信号整形回路を示すブロツク図、第
２図は従来の光デイスクプレーヤのＲＦ信号整形
回路の例を示すブロツク図である。
１……光ピツクアツプ、２……ＲＦ信号増幅器
、３……ハイパスフイルタ、４……波形整形回路
、５……アナログスイツチ。
FIG. 1 is a block diagram showing an RF signal shaping circuit of an optical disc player according to an embodiment of this invention, and FIG. 2 is a block diagram showing an example of a conventional RF signal shaping circuit of an optical disc player. 1... Optical pickup, 2... RF signal amplifier, 3... High pass filter, 4... Waveform shaping circuit, 5... Analog switch.
Claims (1)
号増幅器で増幅し、ハイパスフイルタを介して波
形整形回路に入力する光デイスクプレーヤのＲＦ
信号整形回路において、前記ハイパスフイルタを
スイツチを含む構成とし、デイスクの疵を検出す
る疵検出回路の出力により前記スイツチを切替え
てハイパスフイルタの時定数を切替えることを特
徴とする光デイスクプレーヤのＲＦ信号整形回路
。 The RF signal of an optical disk player amplifies the RF signal obtained from the optical pickup using an RF signal amplifier and inputs it to the waveform shaping circuit via a high-pass filter.
An RF signal for an optical disc player, characterized in that, in the signal shaping circuit, the high-pass filter includes a switch, and the time constant of the high-pass filter is changed by switching the switch based on the output of a flaw detection circuit that detects flaws on the disc. Shaping circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP732790U JPH0398756U (en) | 1990-01-29 | 1990-01-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP732790U JPH0398756U (en) | 1990-01-29 | 1990-01-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0398756U true JPH0398756U (en) | 1991-10-15 |
Family
ID=31510986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP732790U Pending JPH0398756U (en) | 1990-01-29 | 1990-01-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0398756U (en) |
-
1990
- 1990-01-29 JP JP732790U patent/JPH0398756U/ja active Pending