JPS60197937A - Videodisk - Google Patents
VideodiskInfo
- Publication number
- JPS60197937A JPS60197937A JP5405384A JP5405384A JPS60197937A JP S60197937 A JPS60197937 A JP S60197937A JP 5405384 A JP5405384 A JP 5405384A JP 5405384 A JP5405384 A JP 5405384A JP S60197937 A JPS60197937 A JP S60197937A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- signal
- recorded
- video
- video disc
- 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
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- OWNRRUFOJXFKCU-UHFFFAOYSA-N Bromadiolone Chemical compound C=1C=C(C=2C=CC(Br)=CC=2)C=CC=1C(O)CC(C=1C(OC2=CC=CC=C2C=1O)=O)C1=CC=CC=C1 OWNRRUFOJXFKCU-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/0014—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form
- G11B23/0021—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
Description
【発明の詳細な説明】
尊術分野
本発明はビデオディスクに関し、特に記録面の有効利用
に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to video discs, and more particularly to effective use of recording surfaces.
背景技術
ビデオディスクは５円板状をなした記録媒体の表面に設
けられた多数の記録トラックに沿りて映像信号を光学的
、静電的および磁気的等の方法を用いて記録したもので
ある。この場会、光学的および静電的記録を用いたビデ
オディスクは、その取〕扱いが容易であるとともに、記
録密度が高くなることからビデオディスクの主流となシ
ククある。そして、このビデオディスクの言己録に際し
ては、記録ヘッドがビデオディスク上のいかなる位置に
あっても回転速度を一定にする定角速度（ｏ＊Ｖｌｉｒ
！録と、記録ヘッドの位置に関係なくビデオディスクに
対する記録線速度を常に一定にする定線速度（ＯＬＶ）
記録が行なわれている。そして、ビデオディスクに於い
ては、再生時に於けるビデオディスクの回転制御に対す
る容易性および同期信号が半径方向に整列することによ
るトリックプレーの容易性等の観点から定角速度記録が
主流とな、つている。BACKGROUND TECHNOLOGY A video disk is a disk-shaped recording medium on which video signals are recorded along a number of recording tracks provided on the surface using optical, electrostatic, magnetic, etc. methods. be. Nowadays, video disks using optical and electrostatic recording are becoming the mainstream video disk because they are easy to handle and have a high recording density. When recording data on this video disc, a constant angular velocity (o*Vlir
! and constant linear velocity (OLV), which keeps the recording linear velocity to the video disk constant regardless of the position of the recording head.
Recording is being done. For video discs, constant angular velocity recording has become mainstream due to the ease of controlling the rotation of the video disc during playback and the ease of trick play due to the synchronization signals being aligned in the radial direction. There is.
しかしながら、との定角速度記録に於いては。However, in the constant angular velocity record with.
ビデオディスクの外周から内周に向うに伴なって線速度
が低下するため、ヘッドおよび記録媒体の特性から内１
１１ＪＩｃ向うにしたがりて記録波長が短いものとなる
。このため、定角速度記録に於いては、内側に向うにし
たがって高周波信号の記録および再生が低下することが
ら、外周から内側に向う限られた範囲のみが記録面とし
て利用されているのみであって、内周側の比較的広い部
分が未使用となりている。The linear velocity decreases from the outer circumference to the inner circumference of the video disc, so due to the characteristics of the head and recording medium,
11JIc, the recording wavelength becomes shorter. For this reason, in constant angular velocity recording, recording and reproducing of high-frequency signals decreases toward the inside, so only a limited range from the outer circumference toward the inside is used as the recording surface. , a relatively wide area on the inner circumference side is unused.
発明の開示
従って、本発明による目的は、定角速度記録によるビデ
オディスクの内周側部分までも有効利用することが出来
るビデオディスクを提供することである。DISCLOSURE OF THE INVENTION Accordingly, an object of the present invention is to provide a video disc that can effectively utilize even the inner circumferential portion of the video disc by constant angular velocity recording.
この様な目的全達成するために本発明は、ビデオディス
クの記録面を外周側と内周側に２分して外周側に広帯域
信号を記録するとともに内周１１１１に狭帯域信号を記
録し、この両信号をそれぞれ独立して設けられた再生ヘ
ッドにょシ互いに関連させて再生するものである。In order to achieve all of these objectives, the present invention divides the recording surface of a video disc into two parts, an outer circumferential side and an inner circumferential side, records a wide band signal on the outer circumferential side, and records a narrow band signal on the inner circumferential side, These two signals are reproduced in relation to each other by independently provided reproduction heads.
よって、この様に構成されたビデオディスクに於いては
、ビデオ信号の輝度信号を外周側の広帯域記録部に記録
するとともに色信号を内周側の狭帯域記録部に記録し１
両者を同時に再生して構成することによシピデオ信号を
得る等の利用が行なえることになシ、これに伴なって内
外周間の特性差を従来に比較して大幅に縮小することが
出来る。また、配録媒体の内側部分には狭帯域信号のみ
が記録されることがら、従来に比較して更に内側に記録
有効面を設けることが出来、これに伴なりて記録面の有
効利用が計れることになる。Therefore, in a video disc configured in this way, the luminance signal of the video signal is recorded in the wideband recording section on the outer circumference side, and the color signal is recorded on the narrowband recording section on the inner circumference side.
By reproducing and configuring both at the same time, it is possible to obtain a signal, etc., and as a result, the difference in characteristics between the inner and outer circumferences can be significantly reduced compared to the conventional method. . In addition, since only narrowband signals are recorded on the inside of the recording medium, it is possible to provide an effective recording surface further inside than in the past, which allows for effective use of the recording surface. It turns out.
発明を実施するための最良な形態
第１図は本発明によるビデオディスクの一実施例を示す
平面図である。同図に於いて１はビデオディスクであり
て、ここでは光学記録方式によるものに本発明を適用す
る場合にりＧて説明する。２はビデオディスク１の記録
面に於ける外周部分に設けられた広帯域信号記録部、３
は記録面の内周部分に設けられた狭帯域信号記録部であ
、つて、広帯域信号記録部２と狭帯域信号記録部３はビ
デオディスク１の有効記録面を半径方向に２分した状態
となっている。４はビデオディスク１の回転中心に設け
られたターンテーブルへのセット用のセンターホールで
ある。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a plan view showing an embodiment of a video disc according to the present invention. In the figure, reference numeral 1 denotes a video disc, and here, the case where the present invention is applied to one using an optical recording system will be explained. 2 is a broadband signal recording section provided on the outer circumferential portion of the recording surface of the video disc 1;
is a narrowband signal recording section provided at the inner peripheral portion of the recording surface, and the wideband signal recording section 2 and the narrowband signal recording section 3 divide the effective recording surface of the video disc 1 into two in the radial direction. It has become. Reference numeral 4 denotes a center hole provided at the center of rotation of the video disk 1 for setting the video disk on a turntable.
５．６は再生ヘッドであって、それぞれ広帯域信号記録
部２と狭帯域信号記録部３の再生をそれぞれ担当し、図
示しないトラッキング機構によりてビデオディスク１の
半径方向に移動される。Reference numerals 5 and 6 denote playback heads, which are responsible for playback from the wideband signal recording section 2 and the narrowband signal recording section 3, respectively, and are moved in the radial direction of the video disc 1 by a tracking mechanism (not shown).
この様に構成されたビデオディスクに於いて、例えばビ
デオ信号を記録する場合には、このビデオ信号を広帯域
の紳度信号と狭帯域の色信号に分離する。そして、この
輝度信号を広帯域信号記録部１に、また色信号を狭帯域
信号記録部２にそれぞれ同期して例えば光学的に記録す
る。For example, when recording a video signal on a video disc configured in this manner, the video signal is separated into a wideband color signal and a narrowband color signal. Then, the luminance signal is recorded in the broadband signal recording section 1 and the color signal is recorded in the narrowband signal recording section 2 in synchronization with each other, for example, optically.
従って、広帯域の輝度信号は線速度が十分に早い外周部
分の広帯域記録部２に記録されることから、その記録特
性は十分に高いものとなる。Therefore, since the broadband luminance signal is recorded in the broadband recording section 2 in the outer circumferential portion where the linear velocity is sufficiently high, its recording characteristics are sufficiently high.
−万１１信号はビデオディスク１の内周側部分に於ける
線速度の低い狭帯域信号記録部３に記録されることにな
るが、この色信号は周波数の比較的低い信号であること
から、線速度が低くなることによシ条件の悪くなる狭帯
域記録部３であっても十分な記録が行なえることになる
。- The signal will be recorded in the narrow band signal recording section 3 with a low linear velocity in the inner circumference side of the video disc 1, but since this color signal is a signal with a relatively low frequency, Even in the narrow band recording section 3, which has poor recording conditions due to a lower linear velocity, sufficient recording can be performed.
次に、この様にして作られたビデオディスク１は、広帯
域記録部２と狭帯域記録部３をそれぞれ独立的にかり同
期して再生する再生ヘッド５．６を有するビデオディス
クプレーヤーにセットされて再生される。ここで、再生
ヘッド５゜６は５図示しないトラッキング機構によりて
矢印で示すビデオディスク１０半径方向に同時に移動さ
れることによりて、目的とする部分に対する記録情報の
読み出しおよびトラッキング制御が行なわれる。そして
、再生ヘッド５．６からそれぞれ出力される輝度信号と
色信号は１図示しない混合回路に於いて互いに混合され
ることによってビデオ信号に戻され、このビデオ信号は
ディスプレイ装置に供給されることによりて画像として
写し出されることになる。Next, the video disc 1 produced in this manner is set in a video disc player having a playback head 5.6 that plays back the wideband recording section 2 and the narrowband recording section 3 independently and synchronously. will be played. Here, the reproducing heads 5 and 6 are simultaneously moved in the radial direction of the video disk 10 as indicated by arrows by a tracking mechanism (not shown), thereby performing readout of recorded information and tracking control for a target portion. The luminance signal and color signal respectively output from the playback head 5.6 are mixed with each other in a mixing circuit (not shown) and returned to a video signal, and this video signal is supplied to a display device. It will be displayed as an image.
この様に、ビデオ信号と広帯域の輝度信号と狭帯域の色
信号に分けて記録することによ勺。In this way, it is possible to record the video signal separately, the wideband luminance signal, and the narrowband chrominance signal.
ビデオディスク１の内側部分を狭帯域信号としての色信
号の記録によシ多く利用することが出来、これに伴なっ
てビデオディスクに於ける記録面の有効利用が計れるこ
とになる。The inner part of the video disc 1 can be used more for recording color signals as narrowband signals, and the recording surface of the video disc can be used more effectively.
第２ Ｉｆ （ａｌ〜（Ｃ）は本発明によるビデオディ
スクへの広帯域信号の配録例を示すものであって。2nd If(al~(C)) shows an example of distributing a broadband signal onto a video disc according to the present invention.
例えば第１図（ａ）Ｉｃ示す広帯域信号をビデオディス
ク１に記録する場合には、この広帯域信号を第２図（ｂ
）にＡ、Ｂで示す様に高域信号と中低域信号ＢＫ分離す
る。そして、この高域信号Ａは。For example, when recording a wideband signal shown in FIG. 1(a) Ic on the video disc 1, this wideband signal is recorded in FIG.
), the high-frequency signal and the middle-low frequency signal BK are separated as shown by A and B. And this high frequency signal A is.
更に低域変換を加えて第２図（Ｃ）にｐ、Ｉで示す様に
する。この様な処理によって得られた中低域信号Ｂは第
１図に示すビデオディスク１の広帯域信号記録部２に記
録され、低域変換高域信号Ｎ′は狭帯域信号記録部３に
それぞれ記録される。Furthermore, low-frequency conversion is added to obtain the result as shown by p and I in FIG. 2(C). The mid-low band signal B obtained through such processing is recorded in the wide band signal recording section 2 of the video disc 1 shown in FIG. 1, and the low band converted high band signal N' is recorded in the narrow band signal recording section 3. be done.
従って、この様な記録が行なわれているビデオディスク
の再生に際しては、再生ヘッド６から得られる低域変換
高域信号に′を高域信号に戻した後に、再生ヘッド５か
ら得られる中低域信号Ｂに加えることによって元の広帯
域信号が再生されることになる。そしてこの場合には、
中低域信号が８７ｓ特性の良い広帯域信号記録部２に記
録されることか°ら、その再生出力特性も極めて良好な
ものとカリ、高域信号Ａは狭帯域信号記録部３に記録さ
れることになるが、この高域信号Ａは低域変換した後に
記録されることから、記録帯域の特性による影響ヲ受け
なくなる。Therefore, when playing back a video disc on which such recording is performed, after converting the low-frequency converted high-frequency signal obtained from the playback head 6 back to a high-frequency signal, the mid-low frequency range signal obtained from the playback head 5 is By adding it to signal B, the original broadband signal will be regenerated. And in this case,
Since the middle and low frequency signals are recorded in the wideband signal recording section 2 with good 87s characteristics, it is assumed that the reproduction output characteristics are also extremely good, and the high frequency signal A is recorded on the narrowband signal recording section 3. However, since this high frequency signal A is recorded after low frequency conversion, it is not affected by the characteristics of the recording band.
ヒして、この低域変換高域信号を再生して高域変換した
後に再生された中低域信号に甘酸することに゛よりて、
全体としての再生特性が向上するとともに、記録面の内
周側を従来に比較してより内側まで利用することが可能
となり、これに伴なりて記録容量の増大が計れることに
なる。By reproducing this low-frequency converted high-frequency signal and converting it to high frequency, the reproduced mid-low frequency signal is reproduced.
In addition to improving the overall reproduction characteristics, it becomes possible to utilize the inner circumferential side of the recording surface to a greater extent than in the past, and accordingly, the recording capacity can be increased.
なお、上記実施レリに於いては、狭帯域信号記録部３に
色信号または低域変換高域信号を記録した場合にりいて
説明したが、本発明はこれに限定されるものではなく、
ディジタル信号、音声信号等の８／Ｎが低くても良い信
号であればいかなる信号を記録しても良いことは言うま
でもない。また、広帯域信号記録部２と狭帯域信号記録
部３は同一の記録構造である必要はなく、光学記録と磁
気記録との組み曾せ等の様に、異種記録の組み仕せとし
ても良い。更に、上記実施列に於いては、再生ヘッド５
．６の移動方向を同一にした場合について説明したが、
広帯域信号記録部２と狭帯域信号記録部３に対する半径
方向に対する記録方向を互いに逆とし、これに伴なりて
読取時に於ける再生ヘッド５，６の移動方向を互いに逆
として読み取る場合には、線速度の変化が互いに逆とな
ることから、再生特性が互いに補間されて全体として再
生特性が平均化される。Although the above embodiment has been described with reference to the case where a color signal or a low frequency converted high frequency signal is recorded in the narrowband signal recording section 3, the present invention is not limited to this.
It goes without saying that any signal, such as a digital signal or an audio signal, may be recorded as long as it is acceptable even if the 8/N ratio is low. Further, the wideband signal recording section 2 and the narrowband signal recording section 3 do not need to have the same recording structure, and may be a combination of different types of recording, such as a combination of optical recording and magnetic recording. Furthermore, in the above implementation row, the reproducing head 5
．． We explained the case where the movement directions of 6 are the same,
When the recording directions in the radial direction of the wideband signal recording section 2 and the narrowband signal recording section 3 are opposite to each other, and accordingly, the moving directions of the reproducing heads 5 and 6 during reading are opposite to each other when reading, the line Since the speed changes are opposite to each other, the reproduction characteristics are interpolated with each other and the reproduction characteristics are averaged as a whole.
以上説明した様に、本発明によるビデオディスクは、記
録面を外周側と内側に分け、外周側に広帯域信号を記録
するとともに内側に狭帯域信号を記録し、この両信号を
再生して使用するものであるために、広帯域信号がビデ
オディスクの内側再生時に特性が低下するのが防止され
るとともに、内側部分を従来よ勺も広く使用する仁とが
出来ることから、記録面の有効利用が計れる等の種々優
れた効果を有する。As explained above, the video disc according to the present invention has a recording surface divided into an outer circumferential side and an inner circumferential side, a wideband signal is recorded on the outer circumferential side, and a narrowband signal is recorded on the inner circumferential side, and both signals are reproduced and used. This prevents the characteristics from deteriorating when a wideband signal is played inside the video disc, and also allows the inside part to be used more widely than before, allowing for effective use of the recording surface. It has various excellent effects such as.
第１図は本発明によるビデオディスクの一実施例を示す
平面図、第２図（、）〜（Ｃ）は第１図に示すビデオデ
ィスクへの信号の記録例を説明するための特性図である
。
１・・・ビデオディスク、２・・・広帯域信号記録部。
３・・・狭帯域信号記録部、４・・・センターホール。
５．６・・・再生ヘッド。
昧 培
＞ ＞ レ
ー・１
７日“
昭和５９年特許願第５４０５３号
２ 発明の名称
ビデオディスク
ａ 補正をする者
′＝）＼
ら
一ノ
」・
＆ 補正の対象
図面
α 補正の内容
添付別紙複写により図番号を朱書したとおり「第 図」
とあるを［第２図」と追１己訂正する。
昧 畦
レレFIG. 1 is a plan view showing an embodiment of the video disk according to the present invention, and FIGS. 2 (,) to (C) are characteristic diagrams for explaining an example of recording signals on the video disk shown in FIG. be. 1...Video disk, 2...Broadband signal recording section. 3... Narrowband signal recording section, 4... Center hole. 5.6...Playback head. ＞ ＞ Leh 17th “Patent Application No. 54053 of 1988 2 Name of the invention Video disc a Person making the amendment'=) ``Figure'' with the figure number written in red
I have also corrected the text to read ``Figure 2''. Maki Anerere
Claims (1)
ビデオディスクに於いて１．この記録面を外周方向と内
周方向に２分することにより外周部分を広帯域信号記録
部とするとともに内周部分を狭帯域信号記録部とし、両
記録部にそれぞれ広帯域信号と狭帯域信号をそれぞれ同
期的に記録および再生することを特徴とするビデオディ
スク。(In a video disc in which signals are recorded on the surface of a disk-shaped recording medium, 1. This recording surface is divided into two parts in the outer circumferential direction and the inner circumferential direction, so that the outer circumferential part becomes a wideband signal recording area. 1. A video disc characterized in that an inner peripheral portion is a narrowband signal recording section, and a wideband signal and a narrowband signal are respectively recorded and reproduced synchronously in both recording sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5405384A JPS60197937A (en) | 1984-03-21 | 1984-03-21 | Videodisk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5405384A JPS60197937A (en) | 1984-03-21 | 1984-03-21 | Videodisk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60197937A true JPS60197937A (en) | 1985-10-07 |
Family
ID=12959867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5405384A Pending JPS60197937A (en) | 1984-03-21 | 1984-03-21 | Videodisk |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60197937A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62112247A (en) * | 1985-11-11 | 1987-05-23 | Hitachi Ltd | Recording and reproducing optical disk device |
| JPS62243131A (en) * | 1986-04-15 | 1987-10-23 | Pioneer Electronic Corp | Informartion reader |
| JPS63151281A (en) * | 1986-12-16 | 1988-06-23 | Pioneer Electronic Corp | Video signal processor for disk reproducing device |
| JPH04102785U (en) * | 1991-02-13 | 1992-09-04 | 株式会社マツダオート浜松 | Support device for maintenance equipment |
| JPH0556371U (en) * | 1992-01-13 | 1993-07-27 | スズキ株式会社 | Tool suspension moving device |
-
1984
- 1984-03-21 JP JP5405384A patent/JPS60197937A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62112247A (en) * | 1985-11-11 | 1987-05-23 | Hitachi Ltd | Recording and reproducing optical disk device |
| JPS62243131A (en) * | 1986-04-15 | 1987-10-23 | Pioneer Electronic Corp | Informartion reader |
| JPH077523B2 (en) * | 1986-04-15 | 1995-01-30 | パイオニア株式会社 | Information reader |
| JPS63151281A (en) * | 1986-12-16 | 1988-06-23 | Pioneer Electronic Corp | Video signal processor for disk reproducing device |
| JPH04102785U (en) * | 1991-02-13 | 1992-09-04 | 株式会社マツダオート浜松 | Support device for maintenance equipment |
| JPH0556371U (en) * | 1992-01-13 | 1993-07-27 | スズキ株式会社 | Tool suspension moving device |
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