JPH0439725U - - Google Patents
Info
- Publication number
- JPH0439725U JPH0439725U JP8194890U JP8194890U JPH0439725U JP H0439725 U JPH0439725 U JP H0439725U JP 8194890 U JP8194890 U JP 8194890U JP 8194890 U JP8194890 U JP 8194890U JP H0439725 U JPH0439725 U JP H0439725U
- Authority
- JP
- Japan
- Prior art keywords
- amplitude
- signal
- detecting
- difference
- recorded
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 230000008929 regeneration Effects 0.000 claims description 2
- 238000011069 regeneration method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Description
第１図及び第２図は本考案の再生処理装置の１
実施例を示し、第１図はブロツク図、第２図は第
１図の一部の詳細なブロツク図、第３図、第４図
はハイビジヨンＶＴＲの記録信号の波形図、再生
ＦＭ信号の側帯波変化率の特性図、第５図、第６
図は従来例の再生イコライザ回路の特性図、ブロ
ツク図である。
７ｂ……再生イコライザ回路、８……磁気テー
プ、１４……ＦＭ復調回路、１５……ＡＭ検波回
路、１６……Ｓ＆Ｈ回路、１８……誤差検出回路
、２０……積分回路。
Figures 1 and 2 show one of the regeneration processing apparatuses of the present invention.
Fig. 1 is a block diagram, Fig. 2 is a detailed block diagram of a part of Fig. 1, and Figs. 3 and 4 are waveform diagrams of a recording signal of a high-vision VTR, and side bands of a reproduced FM signal. Characteristic diagram of wave change rate, Figures 5 and 6
The figure is a characteristic diagram and a block diagram of a conventional reproduction equalizer circuit. 7b...Reproduction equalizer circuit, 8...Magnetic tape, 14...FM demodulation circuit, 15...AM detection circuit, 16...S&H circuit, 18...Error detection circuit, 20...Integrator circuit.
Claims (1)
変調して記録された記録媒体と、 前記媒体の再生ＦＭ信号を周波数特性を可変補
償してＦＭ復調回路に供給する再生イコライザ回
路と、 前記ＦＭ復調回路の復調信号をＡＭ検波して再
生された前記バースト信号の振幅を検出する振幅
検出手段と、 前記振幅検出手段の検出振幅と設定された基準
振幅との差を検出し前記差に応じて前記再生イコ
ライザ回路の補償特性を可変制御する補償制御手
段と を備えた再生処理装置。[Claims for Utility Model Registration] A recorded signal containing a burst signal of constant amplitude is FM.
A recording medium on which a modulated signal is recorded; a reproduction equalizer circuit that variably compensates the frequency characteristics of a reproduced FM signal of the medium and supplies it to an FM demodulation circuit; amplitude detection means for detecting the amplitude of the burst signal; and compensation control for detecting a difference between the amplitude detected by the amplitude detection means and a set reference amplitude and variably controlling the compensation characteristic of the reproduction equalizer circuit according to the difference. A regeneration processing device comprising means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8194890U JPH0439725U (en) | 1990-07-31 | 1990-07-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8194890U JPH0439725U (en) | 1990-07-31 | 1990-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0439725U true JPH0439725U (en) | 1992-04-03 |
Family
ID=31628330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8194890U Pending JPH0439725U (en) | 1990-07-31 | 1990-07-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0439725U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02134093A (en) * | 1988-11-15 | 1990-05-23 | Toshiba Corp | Video reproducing device |
-
1990
- 1990-07-31 JP JP8194890U patent/JPH0439725U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02134093A (en) * | 1988-11-15 | 1990-05-23 | Toshiba Corp | Video reproducing device |
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