JPS5826739U - Video tape running speed detection circuit - Google Patents
Video tape running speed detection circuitInfo
- Publication number
- JPS5826739U JPS5826739U JP12048581U JP12048581U JPS5826739U JP S5826739 U JPS5826739 U JP S5826739U JP 12048581 U JP12048581 U JP 12048581U JP 12048581 U JP12048581 U JP 12048581U JP S5826739 U JPS5826739 U JP S5826739U
- Authority
- JP
- Japan
- Prior art keywords
- running speed
- video tape
- detection circuit
- speed detection
- tape running
- 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
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
図は本考案に係るビデオテープの走行速度検出回路の一
実施例を用いたビデオテープレコーダの構成図である。
１・・・・・・供給リール、ｌａ、 ２ａ・曲・ハブ
、２・・曲巻取リール、３・・・・・・ビデオテープ、
６・・・・・・回転シリンダ、７・・・・・・コントロ
ールヘッド、１０．１１・・・・・・回転体、１２．１
３・・・・・・光反射体、１４゜１５・・・・・・セン
サ、１６・・・・・・演算装置、１７・曲・波形整形回
路、１８・・・・・・表示器。The figure is a configuration diagram of a video tape recorder using an embodiment of the video tape running speed detection circuit according to the present invention. 1... Supply reel, la, 2a, song hub, 2... song take-up reel, 3... video tape,
6... Rotating cylinder, 7... Control head, 10.11... Rotating body, 12.1
3...Light reflector, 14°15...Sensor, 16...Arithmetic device, 17. Music/waveform shaping circuit, 18...Display device.
Claims (1)
同期信号を検出するコントロールヘッドと、検出した垂
直同期信号の周波数ｆ８を算出し、そのときのテープ走
行速度ｖｏ′を演算する演算回路とからなり、前記演算
回路は、再生、録画時の検出垂直同期信号の周波数をｆ
ｃ”４テ一プ走行速度をｖ、としたとき、ｖ、’、＝ｖ
。・ｆＪｆｏの演算を行なうことを特徴とするビデオテ
ープの走行速度検出回路。It consists of a control head that detects a vertical synchronizing signal recorded on a control track of a video tape, and an arithmetic circuit that calculates the frequency f8 of the detected vertical synchronizing signal and calculates the tape running speed vo' at that time. The circuit changes the frequency of the detected vertical synchronization signal during playback and recording to f
c"4-step traveling speed is v, then v,',=v
. - A videotape running speed detection circuit characterized by calculating fJfo.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12048581U JPS5826739U (en) | 1981-08-13 | 1981-08-13 | Video tape running speed detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12048581U JPS5826739U (en) | 1981-08-13 | 1981-08-13 | Video tape running speed detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5826739U true JPS5826739U (en) | 1983-02-21 |
Family
ID=29914486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12048581U Pending JPS5826739U (en) | 1981-08-13 | 1981-08-13 | Video tape running speed detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5826739U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5341211A (en) * | 1976-09-27 | 1978-04-14 | Matsushita Electric Ind Co Ltd | Remaining tape quantity indicator |
-
1981
- 1981-08-13 JP JP12048581U patent/JPS5826739U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5341211A (en) * | 1976-09-27 | 1978-04-14 | Matsushita Electric Ind Co Ltd | Remaining tape quantity indicator |
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