JPS5898808A - Audio signal recording system - Google Patents
Audio signal recording systemInfo
- Publication number
- JPS5898808A JPS5898808A JP56196363A JP19636381A JPS5898808A JP S5898808 A JPS5898808 A JP S5898808A JP 56196363 A JP56196363 A JP 56196363A JP 19636381 A JP19636381 A JP 19636381A JP S5898808 A JPS5898808 A JP S5898808A
- Authority
- JP
- Japan
- Prior art keywords
- video
- signal
- audio
- stereo left
- tape
- 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
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00992—Circuits for stereophonic or quadraphonic recording or reproducing
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Television Signal Processing For Recording (AREA)
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Abstract
Description
【発明の詳細な説明】
この発明はＶＴＲ用のビデオテープのオーディオトラッ
クにステレオ左右の和信号（Ｌ＋Ｒ）を記録すると共に
、同上テープのビデオトラックにステレオ左右の差信号
（Ｌ−Ｒ）をＦＭ変調してビデオ信号と重畳記録するよ
うに（〜たＶＴＲにおけるオーディオ信号記録方式に関
するものである。Detailed Description of the Invention This invention records a stereo left and right sum signal (L+R) on the audio track of a video tape for a VTR, and records a stereo left and right difference signal (L-R) on the video track of the same tape as an FM. This relates to an audio signal recording method in a VTR, in which the signal is modulated and recorded in a superimposed manner with a video signal.
従来のステレオ式ＶＴＲはビデオテープのオーディオト
ラックを２分してそれぞれステレオ左右の信号りおよび
Ｒを直接にアナログ記録していた。ところがこれらのも
のはモノーラルでも狭いくらいのオーディオトラック（
１，０５ｍ）をさらに２分して用いるものであるため、
Ｓ−Ｎ比やダイナミックレンジおよびチャンネルセパレ
ーション等に無理を生じ充分に満足し得るものではない
という欠点があった。Conventional stereo VTRs divide the audio track of a videotape into two and directly record the left and right stereo signals and R signals in analog form. However, even though these are monaural, the audio track is narrow (
1.05m) is further divided into two parts,
This method has the disadvantage that the S-N ratio, dynamic range, channel separation, etc. are unreasonable and cannot be fully satisfied.
そこでこの発明では子連したような欠点を全て除去する
ために開発されたもので、その特徴とするところは、Ｖ
Ｔ Ｒ用のビデオテープのオーディオトラックにステ
レオ左右の和信号（Ｌ十Ｒ）を記録すると共に、同上テ
ープのビデオトラックにステレオ左右の差信号（Ｌ−Ｒ
）をＦＭ変調してビデオ信号とＮ畳記録するようにした
ＶＴＲにおけるオーディオ信号記録方式を提供するもの
である。Therefore, this invention was developed to eliminate all such drawbacks, and its characteristics are as follows:
The stereo left and right sum signals (L + R) are recorded on the audio track of the T R video tape, and the stereo left and right difference signals (L - R) are recorded on the video track of the same tape.
) is FM-modulated and recorded in an N-fold manner with a video signal in a VTR.
次にこの発明を図示の実施例について詳述する。Next, the present invention will be described in detail with reference to the illustrated embodiments.
第１図はビデオテープの一部を拡大した立面図で、この
チーブＴには多数のビデオトラックｌ工ｒ ’２・・・
１ｎとオーディオトラックｔ。とが周知のＶＴＲ方式に
基づいて形成されているが、特にこの発明では、オーデ
ィオトラックｌ。にはステレオ左右信号り、Ｒの和信号
（Ｌ ＋１．？ ）を通常のオーディオ磁気ヘッドＨＡ
（第２図）でアナログ記録する。この場合は第２図に示
すように加算器Ａで上記（＋、＋ｒｔ）信号を得ると共
に減算器Ｂでステレオ左右の差信号（Ｌ−Ｒ）を得、こ
の差信号（Ｌ−４）をＦＭ変調器＆で変調後、ローパス
フィルタＬ Ｐ Ｆを経て映像回路ＶＡからのビデオ信
号と記録アンプＡ。を介して加算し、ビデオヘッドＨ７
でテープＴに重畳記録する。Figure 1 is an enlarged elevational view of a part of the video tape.
1n and audio track t. are formed based on the well-known VTR system, but in particular in the present invention, an audio track l. There are stereo left and right signals, and the R sum signal (L +1.?) is sent to a normal audio magnetic head HA.
(Figure 2) for analog recording. In this case, as shown in Figure 2, the adder A obtains the above (+, +rt) signal, and the subtracter B obtains the stereo left and right difference signal (L-R), and this difference signal (L-4) is After modulation with the FM modulator &, the video signal from the video circuit VA and the recording amplifier A pass through the low-pass filter LPF. video head H7
superimposed recording on tape T.
次にこの再生に当っては第３図に示すように、Ｈ△から
得た（Ｌ十Ｒ）信号はアンプ等を経て加算器Ａと減算器
Ｂに入力さね、ビデオヘッドＩ（ッからの（Ｌ−Ｒ）信
号のＦ Ｍ変調信号とビデオ信号けそねぞれバンドパス
フィルタＢＰＦをＭて分離され、（Ｌ−Ｒ）ＦＭ変調信
号成分だけがＦＭ復調器ＦＤ″ｃり調され、その後ロー
パスフィルタＬ Ｐ ｌｉ’等を経て前記加讐器Ａ、減
算器Ｂに入力され、とわらの出力端子り、Ｒからそれぞ
ハステレオ信−５（Ｄ、（Ｒ）を個別に取り出すことが
できる。Next, for this reproduction, as shown in Figure 3, the (L + R) signal obtained from H△ is inputted to adder A and subtracter B via an amplifier etc. The FM modulated signal and video signal of the (LR) signal are separated by a band pass filter BPF, and only the (LR) FM modulated signal component is modulated by an FM demodulator FD. After that, it is inputted to the adder A and the subtracter B through a low-pass filter L P li', etc., and the stereo signals -5 (D, (R)) can be taken out individually from the output terminals R and R, respectively. can.
以上述べたように、この発明によれば、ＶＴＲ用のビデ
オテープのオーディオテープのオーディオトラックにス
テレオ左右の和信号（Ｌ十Ｒ）を記録すると共に、同上
テープのビデオトラックにステレオ左右の差信号（Ｌ−
Ｒ）をＦＭ変調してビデオ信号と重畳記録するようにし
たので、ビデオテープの狭いオーディオトラックを２分
割することなくステレオ左右の同時記録ができ、従来の
オーディオトラックには（Ｌ十Ｒ）信号を記録するよう
にしたので、従来のビデオテープレコーダとの互換性も
完壁に確保できるという効果を有する。As described above, according to the present invention, the stereo left and right sum signals (L + R) are recorded on the audio track of the audio tape of a VTR video tape, and the stereo left and right difference signals are recorded on the video track of the same tape. (L-
R) is FM-modulated and recorded superimposed on the video signal, so it is possible to record left and right stereo simultaneously without dividing the narrow audio track of the videotape into two, and the conventional audio track has the (L + R) signal. This has the effect of ensuring complete compatibility with conventional video tape recorders.
図はいずれもこの発明の実施例を示し、第１図はテープ
パターン構成図、第２図および第３図はそれぞれ記録用
および再生用回路ブロックの一例を示す系統回路図であ
る。
符号の説明
Ｔ・・・ビデオテープ １１〜ｌｎ・・・ビデオ
トラックｌｏ・・オーディオ１・ラック Ｈ△・・オー
ディオヘッドＩ（、・−・ビデオヘッド ＆・・
・ＦＭ変調器Ｆｐ・・Ｆ Ｍ復調器 Ａ・・・
加算器Ｂ・・減ａ、器
特お出願人の名称 アイワ株式会社
第１図Each of the figures shows an embodiment of the present invention; FIG. 1 is a tape pattern configuration diagram, and FIGS. 2 and 3 are system circuit diagrams showing examples of recording and reproduction circuit blocks, respectively. Explanation of symbols T...Video tape 11~ln...Video track lo...Audio 1 rack H△...Audio head I (,...Video head &...
・FM modulator Fp...FM demodulator A...
Adder B...Reduction a, Applicant's name Aiwa Co., Ltd. Figure 1
Claims (1)
オ左右の和信号（Ｌ十ｌも）を記録すると共に、同上テ
ープのビデオトラックにステレオ左右の差信号（Ｌ−Ｒ
）をＦ’ Ｍ変調してビデオ信号と重畳記録するように
したＶＴＲにおけるオーディオ信号記録方式。A stereo left and right sum signal (L-R) is recorded on the audio track of a VTR video tape, and a stereo left and right difference signal (L-R) is recorded on the video track of the same tape.
) is F'M modulated and recorded in a superimposed manner with a video signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56196363A JPS5898808A (en) | 1981-12-08 | 1981-12-08 | Audio signal recording system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56196363A JPS5898808A (en) | 1981-12-08 | 1981-12-08 | Audio signal recording system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5898808A true JPS5898808A (en) | 1983-06-11 |
Family
ID=16356596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56196363A Pending JPS5898808A (en) | 1981-12-08 | 1981-12-08 | Audio signal recording system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5898808A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61140410U (en) * | 1985-02-19 | 1986-08-30 | ||
| US8720015B2 (en) | 2010-08-11 | 2014-05-13 | Ykk Corporation | Slide fastener |
| US8813318B2 (en) | 2010-08-11 | 2014-08-26 | Ykk Corporation | Slide fastener |
| US8826500B2 (en) | 2010-08-11 | 2014-09-09 | Ykk Corporation | Slide fastener |
| US8973224B2 (en) | 2010-08-11 | 2015-03-10 | Ykk Corporation | Slide fastener |
| US9027209B2 (en) | 2009-01-30 | 2015-05-12 | Columbia Sportswear North America, Inc. | Snag resistant slide fastener |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5068113A (en) * | 1973-10-19 | 1975-06-07 |
-
1981
- 1981-12-08 JP JP56196363A patent/JPS5898808A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5068113A (en) * | 1973-10-19 | 1975-06-07 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61140410U (en) * | 1985-02-19 | 1986-08-30 | ||
| US9027209B2 (en) | 2009-01-30 | 2015-05-12 | Columbia Sportswear North America, Inc. | Snag resistant slide fastener |
| US8720015B2 (en) | 2010-08-11 | 2014-05-13 | Ykk Corporation | Slide fastener |
| US8813318B2 (en) | 2010-08-11 | 2014-08-26 | Ykk Corporation | Slide fastener |
| US8826500B2 (en) | 2010-08-11 | 2014-09-09 | Ykk Corporation | Slide fastener |
| US8973224B2 (en) | 2010-08-11 | 2015-03-10 | Ykk Corporation | Slide fastener |
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