JPH03106564U - - Google Patents
Info
- Publication number
- JPH03106564U JPH03106564U JP1352290U JP1352290U JPH03106564U JP H03106564 U JPH03106564 U JP H03106564U JP 1352290 U JP1352290 U JP 1352290U JP 1352290 U JP1352290 U JP 1352290U JP H03106564 U JPH03106564 U JP H03106564U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- waveform equalization
- equalization circuit
- waveform
- hpf
- 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 6
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
Description
第１図はこの考案の第１の実施例に係るＣＤプ
レーヤの波形等化回路を含む具体的な信号再生系
の一部を示す回路図、第２図は第１図中の波形等
化回路の等価回路を示す回路図、第３図は第２図
の波形等化回路の動作を示す周波数特性線図、第
４図はこの考案の第２の実施例に係るＣＤプレー
ヤの波形等化回路を含む具体的な信号再生系の一
部を示す回路図、第５図は第４図中の波形等化回
路の等価回路を示す回路図、第６図は第４図の波
形等化回路の動作を示す周波数特性線図である。
第７図は従来のＣＤプレーヤの波形等化回路を含
む具体的な信号再生系の一部を示す回路図である
。
主な符号の説明、１２……ＲＦアンプＩＣ、１
８……加算回路、２０Ａ，２０Ｂ……波形等化回
路、２１Ａ，２１Ｂ……回路定数切り替え回路。
FIG. 1 is a circuit diagram showing a part of a concrete signal reproduction system including a waveform equalization circuit of a CD player according to the first embodiment of this invention, and FIG. 2 is a waveform equalization circuit in FIG. 1. 3 is a frequency characteristic diagram showing the operation of the waveform equalization circuit of FIG. 2, and FIG. 4 is a waveform equalization circuit of a CD player according to the second embodiment of this invention. 5 is a circuit diagram showing an equivalent circuit of the waveform equalization circuit in FIG. 4, and FIG. 6 is a circuit diagram showing a part of the waveform equalization circuit in FIG. FIG. 3 is a frequency characteristic diagram showing the operation.
FIG. 7 is a circuit diagram showing part of a specific signal reproduction system including a waveform equalization circuit of a conventional CD player. Explanation of main symbols, 12...RF amplifier IC, 1
8... Addition circuit, 20A, 20B... Waveform equalization circuit, 21A, 21B... Circuit constant switching circuit.
Claims (1)
おいて、 通常再生時と高速再生時で波形等化回路の回路
定数を切り替える回路定数切り替え回路を設けた
こと、 を特徴とする波形等化回路。 (2) 波形等化回路はＣＲ構成のＨＰＦからなり
、回路定数切り替え回路は、ＨＰＦの容量または
抵抗値を切り替えるようにしたこと、を特徴とす
る請求項１記載の波形等化回路。[Scope of Claim for Utility Model Registration] (1) A waveform equalization circuit that equalizes the waveform of an RF signal is provided with a circuit constant switching circuit that switches the circuit constants of the waveform equalization circuit between normal playback and high-speed playback. A waveform equalization circuit featuring the following. (2) The waveform equalization circuit according to claim 1, wherein the waveform equalization circuit includes an HPF having a CR configuration, and the circuit constant switching circuit switches the capacitance or resistance value of the HPF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1352290U JPH03106564U (en) | 1990-02-14 | 1990-02-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1352290U JPH03106564U (en) | 1990-02-14 | 1990-02-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03106564U true JPH03106564U (en) | 1991-11-05 |
Family
ID=31516933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1352290U Pending JPH03106564U (en) | 1990-02-14 | 1990-02-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03106564U (en) |
-
1990
- 1990-02-14 JP JP1352290U patent/JPH03106564U/ja active Pending
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