JPS58141678U - Video and audio signal recording and playback equipment - Google Patents
Video and audio signal recording and playback equipmentInfo
- Publication number
- JPS58141678U JPS58141678U JP3790882U JP3790882U JPS58141678U JP S58141678 U JPS58141678 U JP S58141678U JP 3790882 U JP3790882 U JP 3790882U JP 3790882 U JP3790882 U JP 3790882U JP S58141678 U JPS58141678 U JP S58141678U
- Authority
- JP
- Japan
- Prior art keywords
- audio signal
- video
- signal
- signal recording
- rotary head
- 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
Landscapes
- Television Signal Processing For Recording (AREA)
- Digital Magnetic Recording (AREA)
- Signal Processing For Digital Recording And Reproducing (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図は従来のＶＴＲによる場合の磁気テープ上の記録
トラックを示す図。第２図ａおよびｂは本考案の一実施
例の要部を示す斜視図および平面図。第３図は本考案の
一実施例に使用をする映像および音声信号用ヘッドから
の再生信号の検出増幅切替回路の一例を示すブロック図
。第４図はＰＣＭアダプタのブロック図。第５図は本考
案の一実施例における磁気テープ上の記録トラックを示
す図。第６図は第３図の検出増幅切替回路の作用の説明
に供する波形図。第７図は本考案の一実施例におけるフ
ィールド種別判別回路の一例を示すブロック図。第８図
は第７図のフィールド種別判別回路の作用の説明に供す
る波形図。
１・・・・・・磁気テープ、６・・・・・・ヘッドシリ
ンダ、７および８・・・・・・映像信号用ヘッド、１０
および１１・・・・・・音声信号用ヘッド、９および１
２・・・・・・検出増幅切替回路、ＭＭ、、 ＭＭ２．
３７および３８・・・・・・単安定マルチバイブレーク
、３５・・・・・・同期信号分離回路、３６・・・・・
・垂直同期信号分離回路、４２・・・・・・フリップフ
ロップ。
−一一一一丁−
１−
第７図 −FIG. 1 is a diagram showing recording tracks on a magnetic tape in the case of a conventional VTR. Figures 2a and 2b are a perspective view and a plan view showing essential parts of an embodiment of the present invention. FIG. 3 is a block diagram showing an example of a detection amplification switching circuit for a reproduced signal from a head for video and audio signals used in an embodiment of the present invention. FIG. 4 is a block diagram of the PCM adapter. FIG. 5 is a diagram showing recording tracks on a magnetic tape in an embodiment of the present invention. FIG. 6 is a waveform diagram for explaining the operation of the detection amplification switching circuit of FIG. 3. FIG. 7 is a block diagram showing an example of a field type discrimination circuit in an embodiment of the present invention. FIG. 8 is a waveform diagram for explaining the operation of the field type discrimination circuit of FIG. 7. DESCRIPTION OF SYMBOLS 1...Magnetic tape, 6...Head cylinder, 7 and 8...Video signal head, 10
and 11...audio signal head, 9 and 1
2...Detection amplification switching circuit, MM, MM2.
37 and 38... Monostable multi-bi break, 35... Synchronous signal separation circuit, 36...
・Vertical synchronization signal separation circuit, 42...Flip-flop. -1111- 1- Figure 7-
Claims (1)
て、映像信号用回転ヘッドの他に音声信号用回転ヘッド
を設け、音声信号により変調された信号を前記音声信号
用回転ヘッドによって磁気テープに記録し、音声信号用
ヘッドの内の一方の音声信号用ヘッドの出力期間と他方
の音声信号用ヘッドの出力期間との間に少なくとも３水
平開期信号期間の差を有するように切替えて音声再生信
号を得ることを特徴とする映像および音声信号記録再生
装置。In a rotary head type video and audio signal recording and reproducing device, an audio signal rotary head is provided in addition to the video signal rotary head, and a signal modulated by the audio signal is recorded on a magnetic tape by the audio signal rotary head, Obtaining an audio reproduction signal by switching so that there is a difference of at least 3 horizontal opening signal periods between the output period of one of the audio signal heads and the output period of the other audio signal head. A video and audio signal recording and reproducing device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3790882U JPS58141678U (en) | 1982-03-19 | 1982-03-19 | Video and audio signal recording and playback equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3790882U JPS58141678U (en) | 1982-03-19 | 1982-03-19 | Video and audio signal recording and playback equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58141678U true JPS58141678U (en) | 1983-09-24 |
| JPH0212774Y2 JPH0212774Y2 (en) | 1990-04-10 |
Family
ID=30049274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3790882U Granted JPS58141678U (en) | 1982-03-19 | 1982-03-19 | Video and audio signal recording and playback equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58141678U (en) |
-
1982
- 1982-03-19 JP JP3790882U patent/JPS58141678U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0212774Y2 (en) | 1990-04-10 |
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