JPH01154695A - Vtr constitution for edtv - Google Patents
Vtr constitution for edtvInfo
- Publication number
- JPH01154695A JPH01154695A JP62311919A JP31191987A JPH01154695A JP H01154695 A JPH01154695 A JP H01154695A JP 62311919 A JP62311919 A JP 62311919A JP 31191987 A JP31191987 A JP 31191987A JP H01154695 A JPH01154695 A JP H01154695A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- luminance signal
- adder
- output
- luminance
- 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
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はＶＴＲに係り、特にＥＤＴＶ用のＶＴＲに関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a VTR, and particularly to a VTR for EDTV.
従来のＶＴＲでは、よく知られているように、３７４イ
ンチＶＴＲ，家庭用ＶＴＲのベータフォーマット方式、
ＶＨ８方式ともに、映像信号を７７０分離し、搬送色信
号は低域変換し、輝度信号はＦＭ変調して、両者を重畳
して記録するカラーアンダ方式が採用されている。As is well known, conventional VTRs include the 374-inch VTR, the beta format system for home VTRs,
Both VH8 systems use a color under system in which the video signal is separated by 770, the carrier color signal is low frequency converted, the luminance signal is FM modulated, and both are superimposed and recorded.
例えば特許５ｇ−４４２３８Ｅ Ｄ Ｔ Ｖ方式は、現
行テレビジョン機器と両立性があるとは言え、現在のカ
ラーアンダ方式のＶＴＲにＨＤＴＶ信号を記録すると、
搬送高精細信号は、色信号、輝度信号として記録される
２つの部分に分かれる。その為。For example, although the patent 5g-44238E DTV system is compatible with current television equipment, if an HDTV signal is recorded on a current color under system VTR,
The conveyed high-definition signal is divided into two parts, which are recorded as a color signal and a luminance signal. For that reason.
両信号間のジッタにより、２つの部分に分かれた高精細
信号の位相が合わなくなるという問題点があった。There has been a problem in that the phases of the high-definition signal divided into two parts are no longer matched due to jitter between the two signals.
本発明の目的は、このジッタの影響を受けないようにす
ることにある。An object of the present invention is to avoid being affected by this jitter.
上記目的は、ＦＤＴＶ信号の搬送高精細情報ＹＨ’
を復調し、 Ｙ Ｈ（４、２Ｍ 〜６ Ｍ Ｈｚ の
輝度成分）を得、これをＹ／Ｃ分離されたＹＬ（４，２
ＭＨｚ以下の輝度信号）に加えることにより、もともと
の輝度信号にしてから、カラーアンダ記録を行うことに
より、達成される。The above purpose is to carry high-definition information YH' of the FDTV signal.
is demodulated to obtain YH (luminance component of 4,2 MHz to 6 MHz), which is converted into YL (4,2 MHz) separated by Y/C.
This is achieved by adding the original luminance signal to the luminance signal (of MHz or less) and then performing color under recording.
高精細情報は、輝度信号の高域ＹＨ（４，２Ｍ Ｈ７以
上）に復調されるため、色信号Ｃとして記録されること
はなく、輝度信号として記録される。よって、高精細信
号用バースト信号が輝度信号として抽出されるようにし
ておけば、高精細情報は、再生輝度・色信号間の位相ジ
ッタの影響を受けず、完全に再生される。Since the high-definition information is demodulated into the high frequency YH (4.2M H7 or higher) of the luminance signal, it is not recorded as the color signal C but as the luminance signal. Therefore, if the high-definition burst signal is extracted as a luminance signal, the high-definition information will be completely reproduced without being affected by the phase jitter between the reproduced luminance and chrominance signals.
以下、本発明の一実施例を第１図により説明する。 An embodiment of the present invention will be described below with reference to FIG.
高精細情報を特許５８−４４２３８のように多重したＥ
ＤＴＶ信号を仮定すると、例えば特＠ＳＳ −４４２３
８に示すＹＬ＃ Ｃ，Ｙ１１’分離器１を通して。E that multiplexes high-definition information as in patent 58-44238
Assuming a DTV signal, for example, special@SS-4423
8 through YL# C, Y11' separator 1.
ＹＬ、Ｃ，Ｙｕ’ を得るａ ＹＨ’は、特許５８−
４４２３８中に示されている高精細信号復調器３を通し
て、変調前の高精細情報ＹＨを得るＩＩＹＬとＹＨを加
算器２ａを通し、輝度信号Ｙを得、これをＦＭ変調器４
．ＢＰＦ５を通して、高域に変換する。一方、搬送色信
号Ｃは１周波数変換器６゜ＬＰＦ７を通して、低域に変
換される。この２つの信号を加算器２ｂで加えで、記録
増幅器８を通した後、記録ヘッド２１を介してテープ２
０に記録する０以上が、記録部の概略である。a YH' to obtain YL, C, Yu' is patent 58-
IIYL and YH are passed through the adder 2a to obtain the luminance signal Y, which is sent to the FM modulator 4.
．． Converts to high frequency through BPF5. On the other hand, the carrier color signal C is converted into a low frequency signal through a 1-frequency converter 6° LPF7. These two signals are added by an adder 2b, passed through a recording amplifier 8, and then sent to a tape 2 via a recording head 21.
0 or more recorded in 0 is an outline of the recording section.
一方、再生部では、テープ２０から再生ヘッド２２を介
して得た出力信号を再生増幅！ａ９を通した後、ＨＰＦ
５ｂ、ＬＰＦ７ｂで輝度信号成分。On the other hand, in the reproduction section, the output signal obtained from the tape 20 via the reproduction head 22 is reproduced and amplified! After passing through a9, HPF
5b and LPF 7b for the luminance signal component.
色信号成分に分離する。輝度信号成分については、その
後、リミッタ１０．ＦＭ復調器１１．ＬＰＦ１２を通し
て、輝度信号Ｙを得る。一方色信号成分については、周
波数変換器１４．ＢＰＦ１５を通して、搬送色信号Ｃを
得ることができる。この時の、変換周波数信号は、バー
スト抜取器１７゜周波数変換器１８により、カラーバー
ストに同期したものを用いる。その後、復調器１６を通
して。Separate into color signal components. For the luminance signal component, the limiter 10. FM demodulator 11. A luminance signal Y is obtained through the LPF 12. On the other hand, for the color signal component, the frequency converter 14. A carrier color signal C can be obtained through the BPF 15. At this time, the converted frequency signal used is one synchronized with the color burst by the burst extractor 17° frequency converter 18. Then through the demodulator 16.
ベースバンド色信号を得る。以上の処理の後、増幅器１
３を通って、輝度９色信号出力を得る。尚。Obtain the baseband color signal. After the above processing, amplifier 1
3 to obtain a luminance 9 color signal output. still.
入力と同じ信号を得たい場合には、特許５８−４４２３
８に示すＥＤＴＶエンコーダをこの後に挿入することに
よって得ることができる。If you want to get the same signal as the input, use patent 58-4423.
This can be obtained by inserting the EDTV encoder shown in 8 after this.
また、ＥＤＴＶの高精細多重の形態が、本発明の実施例
以外に例えばフィールド・オフセット・サンプリング、
映像搬送波の直交変調で行う場合も、本発明と同様に高
精細多重信号を復調し、輝度低域信号に加算したものを
輝度信号とする構成で実現できることは明らかである。In addition to the embodiments of the present invention, EDTV high-definition multiplexing formats include, for example, field offset sampling,
It is clear that even when carrying out orthogonal modulation of a video carrier wave, it can be realized with a configuration in which a high-definition multiplexed signal is demodulated and added to a luminance low-frequency signal to obtain a luminance signal, as in the present invention.
本発明によれば、高精細情報を輝度信号として記録、再
生できるので、高精細情報が、輝度９色信号間の位相ジ
ッタの影響を受けることなく、完全に再生され、画像の
高精細化、高画質化の効果がある。According to the present invention, since high-definition information can be recorded and reproduced as a luminance signal, the high-definition information can be completely reproduced without being affected by phase jitter between the luminance and nine color signals, and the high-definition information can be improved. This has the effect of increasing image quality.
第１図は、本発明の一実施例の、ＥＤＴＶ用ＶＴＲのブ
ロック図である。
１・・・Ｙｔ、、Ｃ，ＹＨ分離器、２・・・加算器、３
・・・Ｙｎ’復調器、４・・・ＦＭ変調器、５・・・Ｈ
ＰＦ、６・・・周波数変換器、７・・・ＬＰＦ、８・・
・記録増幅器、９・・・再生増幅器、１０・・・リミッ
タ、１１・・・ＦＭ復調器、１２・・・ＬＰＦ、１３・
・・ビデオ増幅器、１４・・・周波数変換器、１５・・
・ＢＰＦ、１６・・・搬送色信号復調器、１７・・・バ
ースト抜取器、１８・・・周波数変換器。
第 １ 図FIG. 1 is a block diagram of an EDTV VTR according to an embodiment of the present invention. 1... Yt, , C, YH separator, 2... Adder, 3
...Yn' demodulator, 4...FM modulator, 5...H
PF, 6... Frequency converter, 7... LPF, 8...
- Recording amplifier, 9... Reproduction amplifier, 10... Limiter, 11... FM demodulator, 12... LPF, 13.
...Video amplifier, 14...Frequency converter, 15...
- BPF, 16... Carrier color signal demodulator, 17... Burst extractor, 18... Frequency converter. Figure 1
Claims (1)
復調し、Ｙ／Ｃ分離された輝度信号に加えてから、輝度
信号、色差信号を記録媒体に記録することを特徴とする
ＥＤＴＶ用ＶＴＲの構成。1. A configuration of an EDTV VTR characterized in that in a VTR for EDTV signals, high-definition information is demodulated and added to a Y/C separated luminance signal, and then a luminance signal and a color difference signal are recorded on a recording medium. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62311919A JP2702949B2 (en) | 1987-12-11 | 1987-12-11 | Image recording device for EDTV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62311919A JP2702949B2 (en) | 1987-12-11 | 1987-12-11 | Image recording device for EDTV |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01154695A true JPH01154695A (en) | 1989-06-16 |
| JP2702949B2 JP2702949B2 (en) | 1998-01-26 |
Family
ID=18023002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62311919A Expired - Lifetime JP2702949B2 (en) | 1987-12-11 | 1987-12-11 | Image recording device for EDTV |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2702949B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04286287A (en) * | 1990-10-31 | 1992-10-12 | Samsung Electron Co Ltd | Brightness signal reproducing circuit holding compatibility at the time of reproducing between different video system and its method |
| JPH07212719A (en) * | 1994-01-14 | 1995-08-11 | Victor Co Of Japan Ltd | Video signal recording and reproducing system and device, video signal modem |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61212985A (en) * | 1985-03-18 | 1986-09-20 | Hitachi Ltd | Magnetic recording and reproducing device |
-
1987
- 1987-12-11 JP JP62311919A patent/JP2702949B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61212985A (en) * | 1985-03-18 | 1986-09-20 | Hitachi Ltd | Magnetic recording and reproducing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04286287A (en) * | 1990-10-31 | 1992-10-12 | Samsung Electron Co Ltd | Brightness signal reproducing circuit holding compatibility at the time of reproducing between different video system and its method |
| JPH07212719A (en) * | 1994-01-14 | 1995-08-11 | Victor Co Of Japan Ltd | Video signal recording and reproducing system and device, video signal modem |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2702949B2 (en) | 1998-01-26 |
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