JPH0323859U - - Google Patents
Info
- Publication number
- JPH0323859U JPH0323859U JP8365789U JP8365789U JPH0323859U JP H0323859 U JPH0323859 U JP H0323859U JP 8365789 U JP8365789 U JP 8365789U JP 8365789 U JP8365789 U JP 8365789U JP H0323859 U JPH0323859 U JP H0323859U
- Authority
- JP
- Japan
- Prior art keywords
- attenuator
- converter
- converted
- amount
- signal
- 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
- 230000002238 attenuated effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 1
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
Description
第１図はこの考案の実施例であるＰＣＭ記録装
置を示すブロツク図、第２図は同実施例における
信号の波形を示す図、第３図はこの考案の他の実
施例の部分を示すブロツク図である。
１……記録レベル調整用ボリユーム、２……イ
ンピーダンス変換用バツフアアンプ、３……減衰
器、４……マイクロコンピユータ、５……ＡＤ変
換器、６……信号処理回路、７……デジタルフイ
ルタ、８……ＤＡ変換器、９……出力バツフアア
ンプ。
Fig. 1 is a block diagram showing a PCM recording device which is an embodiment of this invention, Fig. 2 is a diagram showing signal waveforms in the same embodiment, and Fig. 3 is a block diagram showing a portion of another embodiment of this invention. It is a diagram. 1...Volume for recording level adjustment, 2...Buffer amplifier for impedance conversion, 3...Attenuator, 4...Microcomputer, 5...AD converter, 6...Signal processing circuit, 7...Digital filter, 8 ...DA converter, 9...Output buffer amplifier.
Claims (1)
変換したＰＣＭ信号を記録するＰＣＭ記録装置に
おいて、ＡＤ変換器の入力側に所定の減衰量の減
衰器を備えスイツチ操作により前記減衰器を作動
可能とし、レコードポーズ時に前記減衰器を作動
させ、ＡＤ変換された信号をデジタル信号処理に
より前記減衰器で減衰した量を回復させ、前記Ａ
Ｄ変換器のフルスケールレベルを越える量につい
ては非線形の処理を行つた後、ＤＡ変換して再生
することを特徴とするＰＣＭ記録装置。 Quantize the analog signal and convert it to AD using an AD converter.
In a PCM recording device that records a converted PCM signal, an attenuator with a predetermined amount of attenuation is provided on the input side of an AD converter, and the attenuator is enabled by operating a switch. The amount attenuated by the attenuator is recovered from the converted signal by digital signal processing, and the amount attenuated by the attenuator is restored.
A PCM recording device characterized in that an amount exceeding the full scale level of a D converter is subjected to nonlinear processing and then DA converted and reproduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8365789U JPH0323859U (en) | 1989-07-17 | 1989-07-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8365789U JPH0323859U (en) | 1989-07-17 | 1989-07-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0323859U true JPH0323859U (en) | 1991-03-12 |
Family
ID=31631502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8365789U Pending JPH0323859U (en) | 1989-07-17 | 1989-07-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0323859U (en) |
-
1989
- 1989-07-17 JP JP8365789U patent/JPH0323859U/ja active Pending
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