JPH0359735U - - Google Patents
Info
- Publication number
- JPH0359735U JPH0359735U JP11993689U JP11993689U JPH0359735U JP H0359735 U JPH0359735 U JP H0359735U JP 11993689 U JP11993689 U JP 11993689U JP 11993689 U JP11993689 U JP 11993689U JP H0359735 U JPH0359735 U JP H0359735U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- gain control
- input
- control circuit
- sampling frequency
- 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
- 238000005070 sampling Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 2
Landscapes
- Analogue/Digital Conversion (AREA)
Description
第１図はゲインコントロール回路を説明するた
めのＤ／Ａ変換部付近のブロツク図、第２図はＤ
ＳＰ回路からのサンプリング情報を用いた場合の
ゲインコントロール回路付近の回路図、第３図は
マイコンからのサンプリング情報を用いた場合の
ゲインコントロール回路付近の回路図、第４図は
従来のＤ／Ａ変換部付近のブロツク図である。
１……Ｄ／Ａコンバータ、６……検波整流回路
、７……コンパレータ、８……ゲインコントロー
ル回路。
Figure 1 is a block diagram of the D/A conversion section to explain the gain control circuit, and Figure 2 is a block diagram of the D/A conversion section.
Figure 3 is a circuit diagram around the gain control circuit when sampling information from the SP circuit is used. Figure 4 is a circuit diagram around the gain control circuit when sampling information from the microcontroller is used. Figure 4 is a conventional D/A circuit. FIG. 3 is a block diagram of the vicinity of the converting section. 1...D/A converter, 6...Detection rectifier circuit, 7...Comparator, 8...Gain control circuit.
Claims (1)
出力するデジタル／アナログコンバータを用いた
ＰＣＭ再生装置に於いて、 サンプリング周波数情報が入力される検波整流
回路と、 前記検波整流回路から出力される検波整流出力
が入力されるコンパレータ回路と、 前記コンパ
レータ回路からの出力に応じてアナログ出力レベ
ルのゲインを変更するゲインコントロール回路と
、 を有することを特徴としたＰＣＭ再生装置のゲイ
ンコントロール回路。[Scope of Claim for Utility Model Registration] In a PCM reproducing device using a digital/analog converter that outputs an analog signal in accordance with a sampling frequency, there is provided a detection rectifier circuit into which sampling frequency information is input, and from the detection rectifier circuit. A gain control circuit for a PCM reproducing device, comprising: a comparator circuit into which a detected rectified output is input; and a gain control circuit that changes the gain of an analog output level according to the output from the comparator circuit. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989119936U JPH089938Y2 (en) | 1989-10-13 | 1989-10-13 | Gain control circuit for PCM playback device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989119936U JPH089938Y2 (en) | 1989-10-13 | 1989-10-13 | Gain control circuit for PCM playback device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0359735U true JPH0359735U (en) | 1991-06-12 |
| JPH089938Y2 JPH089938Y2 (en) | 1996-03-21 |
Family
ID=31668031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989119936U Expired - Lifetime JPH089938Y2 (en) | 1989-10-13 | 1989-10-13 | Gain control circuit for PCM playback device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH089938Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60117922A (en) * | 1983-11-30 | 1985-06-25 | Toshiba Corp | Digital/analog converting circuit |
-
1989
- 1989-10-13 JP JP1989119936U patent/JPH089938Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60117922A (en) * | 1983-11-30 | 1985-06-25 | Toshiba Corp | Digital/analog converting circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH089938Y2 (en) | 1996-03-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |