JPS5863610U - speed detection circuit - Google Patents
speed detection circuitInfo
- Publication number
- JPS5863610U JPS5863610U JP15747881U JP15747881U JPS5863610U JP S5863610 U JPS5863610 U JP S5863610U JP 15747881 U JP15747881 U JP 15747881U JP 15747881 U JP15747881 U JP 15747881U JP S5863610 U JPS5863610 U JP S5863610U
- Authority
- JP
- Japan
- Prior art keywords
- detection circuit
- speed detection
- signal
- speed
- medium
- 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
Landscapes
- Rotational Drive Of Disk (AREA)
- Control Of Velocity Or Acceleration (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は、本考案の速度検出回路の系統図、第
１．２図は第１図説明用の波形図である。
図面に於て、１は周波数−電圧変換回路、２はゲート回
路、３はサンプルホールド回路、４は検 ゛・
″波回路、５はエンベロープ検波回路、６は比較回路で
ある。Figure 1 is a system diagram of the speed detection circuit of the present invention.
1.2 is a waveform diagram for explaining FIG. 1. In the drawing, 1 is a frequency-voltage conversion circuit, 2 is a gate circuit, 3 is a sample hold circuit, and 4 is a detection circuit.
5 is an envelope detection circuit, and 6 is a comparison circuit.
Claims (1)
数に対応した復調信号を得ると共に再生信号レベル検出
器よりの出力が所定レベル以下の場合には所定レベル以
上の上記復調信号を保持して媒体の速度信号として成る
ことを特徴とする速度検出回路。A demodulated signal corresponding to the highest or lowest frequency is obtained from the modulated and recorded reproduction signal of the medium, and when the output from the reproduction signal level detector is below a predetermined level, the demodulated signal of a predetermined level or higher is held and the medium is A speed detection circuit comprising a speed signal as a speed signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15747881U JPS5863610U (en) | 1981-10-22 | 1981-10-22 | speed detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15747881U JPS5863610U (en) | 1981-10-22 | 1981-10-22 | speed detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5863610U true JPS5863610U (en) | 1983-04-28 |
Family
ID=29950001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15747881U Pending JPS5863610U (en) | 1981-10-22 | 1981-10-22 | speed detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5863610U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5671855A (en) * | 1979-11-15 | 1981-06-15 | Sony Corp | Playback device of disc |
-
1981
- 1981-10-22 JP JP15747881U patent/JPS5863610U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5671855A (en) * | 1979-11-15 | 1981-06-15 | Sony Corp | Playback device of disc |
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