JPS58120386A - Tci transmission system - Google Patents

Tci transmission system

Info

Publication number
JPS58120386A
JPS58120386A JP57002806A JP280682A JPS58120386A JP S58120386 A JPS58120386 A JP S58120386A JP 57002806 A JP57002806 A JP 57002806A JP 280682 A JP280682 A JP 280682A JP S58120386 A JPS58120386 A JP S58120386A
Authority
JP
Japan
Prior art keywords
signal
color
band
color signal
frequency
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
Application number
JP57002806A
Other languages
Japanese (ja)
Inventor
Keiichi Kubota
啓一 久保田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Broadcasting Corp
Original Assignee
Nippon Hoso Kyokai NHK
Japan Broadcasting Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Hoso Kyokai NHK, Japan Broadcasting Corp filed Critical Nippon Hoso Kyokai NHK
Priority to JP57002806A priority Critical patent/JPS58120386A/en
Publication of JPS58120386A publication Critical patent/JPS58120386A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00Colour television systems
    • H04N11/02Colour television systems with bandwidth reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Color Television Systems (AREA)

Abstract

PURPOSE:To eliminate the signal energy of a multiplex region, to reduce the transmission band and to transmit signals with high quality, by separating a color TV signal into low and high frequency chrominance signal components, inserting a luminance signal and the high frequency chrominance signal component between frequencies alternately to multiplex. CONSTITUTION:A color TV signal utilizes an LPF1, a BPF2 of a pre-processor, comb type filters 3, 4 and switches SW1-SW4, to output a low frequench chroma signal component CWL, a luminance signal Y, a signal CN picked up alternately in the horizontal scanning period, and a synthesis signal Y'+C'WH frequency-multiplexing the luminance signal Y and the high frequency chrominance signal component CWH. The signals CWL, CN, Y and Y'+C'WH are applied to a post-processor consisting of comb type filters 13, 14 a BPF15, a multiplier MPL2 and switches SW5-SW8 to output the original broad band chrominance signal CW, the narrow band chrominance signal CN, and the luminance signal Y. Then, the energy of the signals of multiplex region is eliminated, the transmission width is reduced, and the color signal with high quality is transmitted.

Description

【発明の詳細な説明】 本発明は、カラーテレビジョン信号の時間軸圧縮多重伝
送方式、すなわち、いわゆるTOI伝送方式に関し、特
に、高品位カラーテレビジョン信号の伝送に当っても、
占有する伝送帯域−を従来に比して格段に削減し得て、
しかも、信号・品位の低下1画質劣化を少なくした新規
にして有用なTOI伝送方式を実現し得るようにしたも
のである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a time-base compression multiplex transmission method for color television signals, that is, a so-called TOI transmission method, and in particular, for the transmission of high-quality color television signals.
The transmission bandwidth occupied can be significantly reduced compared to conventional methods,
Moreover, it is possible to realize a new and useful TOI transmission system that reduces deterioration in signal quality and image quality.

一般に、カラーテレビジョン信号は輝度信号Yと色信号
Cとからなっており、さらに1色情号Cは赤色信号R1
緑色信号Gおよび背色信号Bの三原色信号からなってお
り、かかる構成のカラーテレビジョン信号を伝送するに
あたっては、その構成要素をなす上述の各信号相互間に
特定の関係が存在するので、三原色信号R、G 、Bを
すべて伝送することなく、2種類の色信号成分のみを輝
度信号Yとともに伝送するようにしている。しかして、
外皮信号Yとともに伝送するg種類の色信号については
、それぞれに、視覚上の特性をオυ用して広狭二様の信
号帯域を付与しており、かかる広狭二様の信号帯域を有
する211[類の色信号を1通常、広帯域色信号0 お
よび狭帯域色信号ONと称している。
Generally, a color television signal consists of a luminance signal Y and a color signal C, and one color signal C includes a red signal R1.
It consists of three primary color signals: a green signal G and a background color signal B. When transmitting a color television signal with such a configuration, there is a specific relationship between the above-mentioned signals that make up the components. Only two types of color signal components are transmitted together with the luminance signal Y, without transmitting all the signals R, G, and B. However,
Regarding the g types of color signals transmitted together with the skin signal Y, two wide and narrow signal bands are given to each of them by taking advantage of visual characteristics, and 211[ Color signals of the type 1 are usually referred to as a wideband color signal 0 and a narrowband color signal ON.

上述のような態様の原塊的構成に基づくカラーテレビジ
ョン信号の標準伝送方式として社、従来、NTSO方式
、FAI、方式、81COAM方式等が採用されている
が、これらの従来方式により特に高品位にした新たな標
準方式のカラーテレビジョン信号を伝送しようとすると
、いずれの従来方式においても極めて広い伝送帯域を占
有することになり、例えば、衛星放送などにて割当てら
れた周波数帯域を効率よく使用するうえから、高品位カ
ラーテレビジョン信号の所要伝送帯域を削減し得るよう
にすることが、従来から切望され1種々の伝送方式が従
来から提案されて来たが、いずれも、満足な結果が得ら
れてはいなかった。
Conventionally, the NTSO system, FAI system, 81COAM system, etc. have been adopted as standard transmission systems for color television signals based on the original configuration as described above, but these conventional systems have achieved particularly high quality. In order to transmit a color television signal using the new standard method, whichever method was used, it would occupy an extremely wide transmission band.For example, it is difficult to efficiently use the frequency band allocated for satellite broadcasting. Therefore, it has long been desired to be able to reduce the required transmission band for high-definition color television signals, and various transmission methods have been proposed, but none of them have yielded satisfactory results. I wasn't getting it.

本発明の目的は、上述した従来の問題を解決し、為品位
カラーテレビジョン信号に要する伝送帯域輪を従来に比
して大輪に減少させ、従来の高品位輝度信号の伝送に要
してい九のとほぼ同等の伝送帯域幅にて高品位カラーテ
レビジョン信号を、画質の劣化を伴なうことなく、伝送
し得るようにした時間軸圧縮多重伝送方式、すなわち、
TOI伝送方式を提供することにある。
An object of the present invention is to solve the above-mentioned conventional problems, reduce the transmission bandwidth required for a high-quality color television signal to a larger number than before, and reduce the transmission bandwidth required for a conventional high-definition luminance signal to 9. A time-base compression multiplex transmission method that allows high-definition color television signals to be transmitted using a transmission bandwidth almost equivalent to that of
The objective is to provide a TOI transmission system.

すなわち1本発明TOI伝送方式は、輝度信号、広帯域
色信号および狭帯域色信号よりなるカラーテレビジョン
色信号を、前記狭帯域色信号とほぼ同一の帯域を有する
低域色信号成分と前記同一の帯域を超えた帯域を有する
高域色信号成分とに分離し% l水平走査期間おきに前
記輝度信号に前記高域色信号成分を周波数多重するとと
もに、水平走査期間交互にして前記低域色信号成分と前
記狭帯域色信号とを組合わせた線順次色信号を時間軸圧
縮して前記輝度信号に時分割多重するようにしたことを
特徴とするものである。
In other words, the TOI transmission system of the present invention transmits a color television color signal consisting of a luminance signal, a wideband color signal, and a narrowband color signal to a low frequency color signal component having almost the same band as the narrowband color signal and the same band as the narrowband color signal. The high-frequency color signal component is frequency-multiplexed onto the luminance signal every horizontal scanning period, and the low-frequency color signal component is separated into a high-frequency color signal component having a band exceeding the frequency band. The present invention is characterized in that a line-sequential color signal, which is a combination of a component and the narrowband color signal, is time-base compressed and time-division multiplexed with the luminance signal.

以下に図面を参照して実施例につき、本発明の詳細な説
明する。
The present invention will be described in detail below by way of embodiments with reference to the drawings.

しかして、本発明TOI伝送方式の説明に先立ち。Therefore, before explaining the TOI transmission method of the present invention.

従来の誦品位カラーテレビジョン信号伝送方式について
簡単に説明し、その間照点を明らかにしておく。
The conventional recitation quality color television signal transmission system will be briefly explained and its highlights will be clarified.

なお、ここにいう高品位カラーテレビジョン信号は、将
、来その標準方式に採用されるものと与られるつぎの諸
元を備え良ものを指す。すなわち、走査線数     
  11ffi5本毎秒像数        δOフレ
ーム走査方弐      l:lラインインターレース
方式%式% 広帯域色信号(01)帯域 フMHz 狭帯域色信号((1N)僧職 4 MHz上述した高品
位カラーテレビジョン信号を構成する各信号、すなわち
、輝度信号Y、広帯域色信号(31および狭帯域色信号
0.の周波数スペクトラムな概略図示すれば第1v!J
(→、(b)および(→に示すようになる。なお、以下
には本発明伝送方式をかかる諸元を有する高品位カラー
テレビジョン信号の伝送に適用するものとして本発明を
説明するカー上述とは異なる諸元を有する他の一品位カ
ラーテレビジョン信号の伝送にも、使用するパラメータ
に変更を施すだけで全く同様に本発明伝送方式を適用し
得ること勿論である。
Note that the high-definition color television signal referred to herein refers to a signal that is of good quality and has the following specifications that will be adopted as a standard system in the future. That is, the number of scanning lines
11ffi 5 images per second δO frame scanning method 2 l:l line interlacing method % formula % Wideband color signal (01) Band f MHz Narrowband color signal ((1N) Priest 4 MHz Constitutes the above-mentioned high-quality color television signal A schematic diagram of the frequency spectrum of each signal, that is, the luminance signal Y, the wideband chrominance signal (31), and the narrowband chrominance signal 0.
(→, (b) and (→). In the following, the present invention will be explained as applying the transmission method of the present invention to the transmission of high-definition color television signals having such specifications. Of course, the transmission system of the present invention can be applied in exactly the same way to the transmission of other one-definition color television signals having specifications different from those described above, by simply changing the parameters used.

しかして、上述のような高品位カラーテレビジョン信号
の伝送に従来提案されていた伝送方式はつぎの8方式に
大別される。
The transmission methods conventionally proposed for transmitting the above-mentioned high-quality color television signals can be roughly divided into the following eight methods.

すなわち、そのうちの1方式は、子線走査周波数オフセ
ット型PAL方式(Half Line 0ffset
−PiL)、すなわち、いわゆるHLO−PAL方式と
呼はれる複合映像信号伝送方式であり、輝度信号スペク
トルと搬送色信号スペクトルとが水平走査周波数の鍔の
差をもってオフセットするように色aa+ia波周波数
と水平走査周波数との関係を選定したカラーテレビジョ
ン信号伝送方式であって、輝度信号Yの帯域外に色刷搬
送波周波数24.8 MHzを選定し、通常のPAL方
式におけると同様に、その色刷搬送波に広帯域色信号O
wおよび狭帯域色信号ONにより直角2相の振−変調を
施すことによって、搬送狭帯色信号ONについてはその
全帯域を4度償号Yの帯域外に多重し%また、搬送広帯
域色信号CIyについては、その一部の帯域を輝度信号
Yの高域伝送帯域17.ト40111露に多重するとと
もに残余の帯域を輝度信号Yの帯域外に多重し九複合映
像信号を伝送するようにしたものであるが、この複合映
像信号は、信号スペクトラムが80 MHz tで拡が
り、しかも、その高域に色信号のエネルギーが集中して
いるので、かがる複合映像信号を例えば衛鳳通信等に多
用されるFM方式により伝送すると、FM伝送方式に固
有のいわゆる三角ノイズによって高域のSN比が著しく
劣化する悪影響が色信号に看しく現われるので、このH
LO−PAL方式は衛鳳放送等における高品位カラーテ
レビジョン信号の伝送に採用される筈の1M伝送には本
質的に不向きのものである。
That is, one of these methods is the half line scanning frequency offset type PAL method (Half Line Offset
-PiL), that is, the so-called HLO-PAL method, is a composite video signal transmission method, in which the color aa+ia wave frequency is adjusted so that the luminance signal spectrum and carrier color signal spectrum are offset by a difference in horizontal scanning frequency. This is a color television signal transmission system in which the relationship with the horizontal scanning frequency is selected, and a color printing carrier wave frequency of 24.8 MHz is selected outside the band of the luminance signal Y, and the color printing carrier wave is Wideband color signal O
By performing quadrature two-phase amplitude modulation using w and the narrowband color signal ON, the entire band of the carrier narrowband color signal ON is multiplexed outside the band of the 4-degree decoding Y, and the carrier wideband color signal is Regarding CIy, a part of the band is used as the high frequency transmission band 17. of the luminance signal Y. The signal spectrum of this composite video signal spreads at 80 MHz t, Moreover, since the energy of the color signal is concentrated in the high frequency range, when a complex video signal is transmitted using the FM method, which is often used for e.g. This H
The LO-PAL system is essentially unsuitable for 1M transmission, which is supposed to be adopted for transmission of high-quality color television signals in broadcasting and the like.

また、上述した2大別方式のうちの他の1方式は%高品
位カラーテレビジョン信号を構成する輝度信号Yと色信
号0とを別個の伝送回線を並列にそれぞれ使用して伝送
するものであり、わが国における実験用放送衛鳳を用い
た高品位カラーテレビジョン信号の伝送実験にはこの後
者の伝送方式が採用されたが、この伝送方式は、広帯域
伝送回線を1回線占有するという欠点があった。
The other one of the two main systems mentioned above is one in which the luminance signal Y and color signal 0, which constitute a high-definition color television signal, are transmitted in parallel using separate transmission lines. The latter transmission method was adopted in the transmission experiment of high-definition color television signals using experimental broadcasting equipment in Japan, but this transmission method has the disadvantage that it occupies one broadband transmission line. there were.

かかる従来の伝送方式に対して、本発明TGI伝送方式
は、高品位力2−テレビジョン信号を構成する色信号成
分を輝度信号成分に周波数多重および時分割多重して、
広帯域輝度信号のみとほぼ同等の広帯域伝送回線の1回
線分の伝送帯域にて、従来と同等もしくは同等以上のカ
ラーl1lll質をもって高品位力2−テレビジョン信
号を伝送し得るようにしており、かかる本発明伝送方式
における時間軸圧縮多重を施す前に一品位カラーテレビ
ジョン信号に施す前処理としての各構成要素信号成分の
周波数分醗乃至合成を行なう前処理装置の概略構成の例
を第2図(&)に示し、その概略構成をなす各フィルタ
の典型的な周波数レスポンス特性を第S図(b)〜((
1)にそれぞれ示す。
In contrast to such conventional transmission systems, the TGI transmission system of the present invention frequency-multiplexes and time-division-multiplexes the color signal components constituting the high-definition television signal onto the luminance signal components.
It is possible to transmit a high-definition television signal with color quality equal to or better than that of the conventional technology in the transmission band of one wideband transmission line, which is almost equivalent to only a wideband luminance signal. FIG. 2 shows an example of a schematic configuration of a preprocessing device that performs frequency division or synthesis of each constituent signal component as preprocessing applied to a one-quality color television signal before time-base compression multiplexing in the transmission system of the present invention. (&) shows the typical frequency response characteristics of each filter that makes up its schematic configuration.
1).

図示の構成による前処理装置においては、本発明方式の
特徴につき前述した広帯域色信号CW中の低域色信号成
分と、狭帯域色信号CNとを水平走査期間交互に組合わ
せた線順次色信号に関し、狭帯域色信号ONについては
何ら前処理を總すことなくそのtま通過させるが、広帯
域色信号ONについては、つぎのような前処理を施す。
In the preprocessing device having the illustrated configuration, a line-sequential color signal is produced by alternately combining the low-band color signal component in the wide-band color signal CW and the narrow-band color signal CN during the horizontal scanning period, which are described above as a feature of the present invention. Regarding the narrowband color signal ON, it is passed through until t without any preprocessing, but the wideband color signal ON is subjected to the following preprocessing.

すなわち、第S図(&)に示す構成において、スイッチ
swt、swiがともに上側接点に接続されて、狭帯域
色信号ONはそのtま出力端に現われるも。
That is, in the configuration shown in FIG. S(&), the switches swt and swi are both connected to the upper contacts, and the narrowband color signal ON appears at the output terminal until then.

広帯域色信号0.の入来時には、スイッチ811゜SW
zがともに図示のとおりに下側接点に接続されて、低域
通過フィルタlおよび帯域通過フィルタ2に並列に供給
される。その低域通過フィルタlは、第2図(切に示す
ような周波数レスポンス特性を有しており、シ良がって
、スイッチSW2の出力側には周波数帯域4MHm以下
の低域色信号成分OwLが得られる。一方、帯域通過フ
ィルタltl第2図(0)に示すような周波数レスポン
ス特性を有しており、したがって、そのF波出力として
周波数帯域4〜7 Mugの高域色信号成分CwHが得
られ。
Wideband color signal 0. At the time of entry, switch 811゜SW
z are both connected to the lower contacts as shown and fed in parallel to low pass filter l and band pass filter 2. The low-pass filter l has a frequency response characteristic as shown in FIG. On the other hand, the bandpass filter ltl has a frequency response characteristic as shown in FIG. Obtained.

この鳥域色情号成分OwHrt#a算器MPL lに導
いて色副搬送波ao@Bπmf、。φtを振幅変調し、
その被変調出力を、第glW(d)に示すよりなm波数
レスポンス特性を有する櫛型フィルタ8に導き、そのp
波出力として敞送簡域色信号成分0′vIHを取出して
加算器ムDDIに供給する。なお、色副搬送波oosf
iπ・flIo・tにおけるflioは色iU搬送波周
波数であって、 ’@O−884,5X fH”= 12.997 MH
zに選定し、ここにfHは水平走査周波数である。した
がって、上述した段階までの前処理を施した部域色信号
成分OWHおよび搬送成域色信号成分CWHの周波数ス
ペクトラムは第8図に示すようになり、周波数帯域4〜
7 MHzの尚域色信号成分CWfiは周波数帯域17
〜jl OMHzの搬送広域色信号成分cQBに変換さ
れ、しかも、第2図((1)に示した櫛型の振幅周波数
分布を有している。
This bird gamut chrominance code component OwHrt#a is led to the calculator MPL l and the color subcarrier ao@Bπmf. Amplitude modulate φt,
The modulated output is guided to a comb filter 8 having a m-wavenumber response characteristic shown in glW(d), and its p
The color signal component 0'vIH is taken out as a wave output and supplied to an adder DDI. Note that the color subcarrier oosf
flio in iπ flIo t is the color iU carrier frequency, '@O-884,5X fH'' = 12.997 MH
z, where fH is the horizontal scanning frequency. Therefore, the frequency spectrum of the gamut color signal component OWH and the carrier gamut color signal component CWH that have been preprocessed up to the above-mentioned stage becomes as shown in FIG.
The gamut color signal component CWfi of 7 MHz is in the frequency band 17.
~jl OMHz is converted into a carrier wide-range color signal component cQB, which has the comb-shaped amplitude frequency distribution shown in FIG. 2 ((1)).

一方、かかる前処理を施す広帯域色信号CWと同一水平
走査期間における輝度信号Yは、その期間にはスイッチ
SW8 、 SW4がともに図示のように上側接点に接
続されているので、第2図(・)に示すような周波数レ
スポンス特性を有する櫛型フィルタ番に導かれ、図示の
振11&周波数特性を有する選択的輝度信号Y′の形態
になって加算器ムDDlに供給される。しかして、第8
図(・)と(句とを対比すれば明らかなように、双方の
櫛型特性部公社交互に間挿される関係になっているので
、加算器ムDDIにて搬送高域色信号成分Ciと選択的
輝度信号Y′とを加算合成すれば、双方の櫛型特性部分
が交互に周波数多重され、輝度信号Yの高域部分に搬送
広帯域色信号の置載成分を周波数多重し次形態の合成信
号Y/+輸、とじて取出される。なお、狭帯域色信号C
,と同一水平走査期間における輝度信号Yは、スイッチ
swg 、 sw*がともに下側接点に*aされている
ので、何ら前処理を施すことなく、そのままの形態にて
取出される。かかる信号処理を行なう第8図(&)示の
前処理装置における上側回路のスイッチSW2並びに下
側回路のスイッチSW4から、それぞれ、水平走査周期
交互に取出される処理済み信号ONおよびOWL並びに
Yおよびy’+c、、、の信号波形の例を第4図に模式
的に示し、これら各処理済み信号の概略の1に波数スペ
クトラムを第6図に示す。
On the other hand, the luminance signal Y in the same horizontal scanning period as the broadband color signal CW subjected to such preprocessing is as shown in FIG. ), and is supplied to the adder DDl in the form of a selective luminance signal Y' having the frequency response characteristics shown in FIG. However, the 8th
As is clear from the comparison between the figures (・) and (phrase), the comb-shaped characteristic portions of both are interpolated alternately, so the high-frequency color signal component Ci to be carried by the adder DDI is When the selective luminance signal Y' is added and synthesized, the comb-shaped characteristic portions of both are alternately frequency-multiplexed, and the component of the carrier broadband color signal is frequency-multiplexed on the high-frequency portion of the luminance signal Y, resulting in the next form of synthesis. The signal Y/+ is extracted by combining the signal Y/+.In addition, the narrowband color signal C
, and the brightness signal Y during the same horizontal scanning period is extracted in its original form without any preprocessing, since the switches swg and sw* are both connected to the lower contacts *a. In the preprocessing device shown in FIG. 8(&) that performs such signal processing, the processed signals ON and OWL and Y and An example of the signal waveform of y'+c, . . . is schematically shown in FIG. 4, and a schematic wave number spectrum of each of these processed signals is shown in FIG.

第8図(&)示の前処理装置から得られ、第4図示の信
号波形を有する各処理済み信号0 およびOWL並びに
YおよびY′+c′vIHは、第6図に構成例を示す時
間軸圧細条1装置にそれぞれ供給し、a切に時間軸を圧
縮したうえで相互に時分割多重して合成する◇すなわち
、第2図(&)示の前処瑞装阪から得られる処理済み色
信号成分ONおよびOWLは、アナログ−ディジタル変
換器5によりディジタル色信号成分に変換したうえで、
そのアナログ−ディジタル変換器すのサンプリング周波
数と同一のクロック周波数fを有する蕾込みクロック盾
号の制御のもとに2インメモリ6に順次に膏込むととも
に、その誉込みクロック信号の周波数での5倍のクロッ
ク周波数5fを有する絖出しクロック信号の制御のもと
に、畳込み時の5倍の速度にて1時間軸を14に圧縮し
た状態にして、水平走査期間毎に区切って読出す。かか
る時間軸圧動を施した処理済み色信号成分を、ゲイジ身
ルーアナログ変換器フによりアナログ信号の形態に復元
したりえで、加算器ムDDIに導き、処理済み輝度信号
成分Yおよびy/ + o′V1.のそれぞれ対応する
水平消去期間に時分割多重して合成し1本発明方式によ
る伝送信号としての時間軸圧縮多重力9−fレビジョン
信号を取出す。
Each processed signal 0 and OWL and Y and Y'+c'vIH obtained from the preprocessing device shown in FIG. 8(&) and having the signal waveform shown in FIG. The compressed strips are each supplied to one device, the time axis is compressed to the utmost, and then time-division multiplexed and synthesized. ◇In other words, the processed strips obtained from the pretreatment Zuisaka shown in Figure 2 (&) are The color signal components ON and OWL are converted into digital color signal components by the analog-digital converter 5, and then
The analog-to-digital converter is sequentially loaded into the two-in-memory 6 under the control of a clock signal having a clock frequency f that is the same as the sampling frequency of the analog-to-digital converter. Under the control of a start-up clock signal having twice the clock frequency of 5f, one time axis is compressed to 14 at a speed five times that of convolution, and read out in sections for each horizontal scanning period. The processed chrominance signal component subjected to such time axis fluctuation is restored to an analog signal form by a gauge analog converter, and then led to an adder DDI, where it is converted into processed luminance signal components Y and y/+. o'V1. are time-division multiplexed and synthesized in the horizontal erasing periods corresponding to the respective ones, and a time-axis compressed multiplex 9-f revision signal is extracted as a transmission signal according to the method of the present invention.

上述のようにして時間軸圧縮多重を施した力2−テレビ
ジョン信号の信号波形の例を第7図に示す0図示の信号
波形から判るように1本発明方式による ′   −伝
送用時間軸圧縮多重カラーテレビジョン信号としては、
水平同期信号を、水平走査周期の1周期おきに伝送する
とともに、水平同期信号を付加しない水平走査周期の該
当期間はプランキング期間として使用し、輝度信号Yの
クランプを確実に行ない得るようにして、受信側におけ
る比較的複雑な信号復元処理によっても外生じた高品位
カラーテレビジョン信号の直流分が正確に再生されるよ
うにするのが好適である0つぎに、上述のような時間軸
圧縮多重を施した本発明方式の伝送用カラーテレビジョ
ン信号を受信して高品位カラーテレビジョン信号に仮元
するための時間軸分離伸張装置の概略構成の例を第8図
に示す。図示の構成による時間軸分離伸張装置において
は、第7図示の信号波形を有する受信信号をゲート回路
8および9に並列に供給し、ゲート回路8からは、第7
図示の信号波形における水平消去期間に時分割多重した
時間軸圧縮色信号成分を抽出して、アナログ−ディジタ
ル変換器lOによりディジタル色信号の形態に変換した
うえで、ラインメモリ11に導き、送信側における第6
図示の時間油圧縮多重装置中のラインメモリ6における
と同一のクロック周波数5fを有する書込みクロック信
号の制御のもとに、送信偏における読出しと同じ^速度
にて1M号到来の都度、順次に畳込むとともに、同じく
ラインメモリ6におけると同一のクロック周波1&fを
有する絖出しクロック信号の制御のもとに、送信側にお
ける畳込みと同じ通常の速度にて続出し、さらに、ディ
ジタル−アナログ変換器12によりアナログ色信号の形
態に復元したりえで、上述のような6倍の時間軸伸張に
より通常の状態に復元した狭帯域色信号ONおよび低域
色信号成分OWLを水平走査周期交互に取出す〇一方、
ゲート回路9からは、第7図示の信号波形における水平
消去期間の時分割多重時間軸圧縮色信号成分のみを除去
した。送信側におけるl!+1処理済み輝度信号成分Y
およびYI+0;、、Hを主体とする残余の信号部分を
、そのままの形態にて出力側に取出す0 上述のようにして送信側における時間軸圧縮時分割多重
とは逆の時間軸分離伸張を施し良各−信号CNおよびO
WL、並びにY′+OiHは、第9図に示すように構成
した後処理装置に供給して、送信側における前処理とは
逆の信号処理過程による後処理を總して、完全に高品位
カラーテレビジョン信号の形態に復元する0すなわち、
第9図示の構成による後処理装置においては、前処理済
み輝度信号成分YおよびY’+ O−□のうち、搬送鳥
域色信号成分0鼻Hを付加してない水平走査期間の輝度
信号成分は、スイッチSW?およびSW8がともに下側
接点に接続されているので、その壜まの形態にて出力側
に取出され、また、Wi送高域色信号成分0WIiを付
加した水平走査期間の前処理済み輝度信号成分y’+o
籠は、スイッチSW7およびSW8が図示のようにとも
に上側接点に接続されているので、横型フィルタ18お
よび14に並列に導かれる0しかして、櫛型フィルタ1
4は、送信側の前処a1装置における櫛型フィルタ4と
同様に、第2図(e)に示し九周波数レスポンス特性を
有しているので、周波数多重した蒙送高域色信号成分0
’WRのみを除去した、図示の振幅周波数特性を有する
輝度信号成分Y′を主体とした残余の信号成分を抽出し
て出力側に取出す。また、櫛型フィルタ18は、送信側
の前処理装置における横型フィルタ8と同様に。
FIG. 7 shows an example of the signal waveform of a television signal subjected to time-base compression multiplexing as described above. As can be seen from the signal waveform shown in FIG. As a multiplex color television signal,
The horizontal synchronization signal is transmitted every other period of the horizontal scanning period, and the corresponding period of the horizontal scanning period in which no horizontal synchronization signal is added is used as a blanking period, so that the luminance signal Y can be reliably clamped. It is preferable to ensure that the DC component of the high-quality color television signal, which is generated even by relatively complicated signal restoration processing on the receiving side, is accurately reproduced.Next, time axis compression as described above FIG. 8 shows an example of a schematic configuration of a time-base separation and decompression device for receiving a multiplexed color television signal for transmission according to the present invention and temporarily converting it into a high-quality color television signal. In the time base separation/expansion device having the configuration shown in the figure, a received signal having the signal waveform shown in the seventh figure is supplied to gate circuits 8 and 9 in parallel,
The time-base compressed color signal components time-division multiplexed during the horizontal erasing period in the signal waveform shown in the figure are extracted, converted into a digital color signal form by an analog-to-digital converter 1O, and guided to the line memory 11 to be sent to the transmitting side. 6th in
Under the control of a write clock signal having the same clock frequency 5f as in the line memory 6 in the illustrated time-compression multiplexer, each 1M number arrives at the same speed as the readout in the transmission bias, and is sequentially and continues at the same normal speed as the convolution on the transmitting side under the control of a starting clock signal with the same clock frequency 1&f as in the line memory 6, and also in the digital-to-analog converter 12. The narrow band color signal ON and the low band color signal component OWL, which have been restored to the normal state by six times the time axis expansion as described above, are extracted alternately in the horizontal scanning period. direction,
From the gate circuit 9, only the time division multiplexed time axis compressed color signal component of the horizontal erasing period in the signal waveform shown in FIG. 7 was removed. l! on the sending side! +1 processed luminance signal component Y
The remaining signal portion, mainly consisting of YI+0;,,H, is extracted as it is to the output side.0 As described above, time axis separation and expansion, which is the opposite of time axis compression and time division multiplexing, is performed on the transmitting side. Good each - signals CN and O
WL and Y'+OiH are supplied to a post-processing device configured as shown in Figure 9, and are post-processed using a signal processing process that is the opposite of the pre-processing on the transmitting side, resulting in completely high-quality color. 0 to restore to the form of a television signal, i.e.
In the post-processing device having the configuration shown in FIG. 9, among the pre-processed luminance signal components Y and Y'+O-□, the luminance signal component in the horizontal scanning period to which the carrier bird area color signal component 0 nose H is not added. Is it the switch SW? Since SW8 and SW8 are both connected to the lower contact, the pre-processed luminance signal component of the horizontal scanning period is taken out to the output side in the form of a bottle, and the pre-processed luminance signal component of the horizontal scanning period to which the Wi sending high range color signal component 0WIi is added. y'+o
Since the switches SW7 and SW8 are both connected to the upper contacts as shown, the cage is connected in parallel to the horizontal filters 18 and 14. Therefore, the comb filter 1
Similar to the comb-shaped filter 4 in the pre-processing A1 device on the transmitting side, the filter 4 has a frequency response characteristic of 9 as shown in FIG.
After removing only 'WR', the remaining signal components mainly consisting of the luminance signal component Y' having the amplitude-frequency characteristics shown are extracted and taken out to the output side. Further, the comb filter 18 is similar to the horizontal filter 8 in the preprocessing device on the transmission side.

第2図(<L)に示した周波数レスポンス特性を有して
いるので、図示の振幅周波数特性を有する搬送尚域色信
号成分C′wHのみを抽出して掛算器MPL gに供給
する0その掛算器MPL gには、X8信側の前処理装
置における掛算器MPL 1と同様に、周波数fao 
−884、!l X  fH−12,997MHa(7
)色副搬送波0o82πf8゜・tを供給してあり、こ
の色ff1lWI送波により同期検波して尚域色信号O
wHを復調り生し、同じく前処理装置における帯域通過
フィルタ8と同様に、第3図(0)に示した周波数レス
ポンス特性を有する帯域通過フィルタ15を介して、加
算器ムDD8に供給する。この加算器ムDD8に社、搬
送鵬域色信号成分’wnを多重した水平走査期間にはス
イッチSW6およびSW6が図示のようにともに下側接
点に接続されているので、同時に低域色信号OWLが供
給されており、したがって、加算器ムDD8からは、完
全に復元貴生した広帯域色信号Cwが取出される。なお
、搬送尚域色信号成分OWHを多重していない水平走査
期間にはスイッチSW5およびSW6がともに上側接点
に接続されているので、狭帯域色信号ONがそのままの
形態にて出力側に取出される。したがって、かかる後処
理によって、第2図(→に示した約処理装置に供給した
鳩品位カラーテレビジョン信号の各信号成分がほぼ完全
に復元拘生されることになる0すなわち、輝度信号Yの
みは、第8図(・)に示した振幅周波数特性に従って^
域成分の一部が横型に欠除しているが、p+生画質には
実質的にほとんど彫物せず、はぼ完全に復元再生したと
いえる。
Since it has the frequency response characteristic shown in FIG. 2 (<L), only the carrier gamut color signal component C'wH having the amplitude-frequency characteristic shown in the figure is extracted and supplied to the multiplier MPL g. The multiplier MPL g has a frequency fao similar to the multiplier MPL 1 in the preprocessing device on the X8 signal side.
-884,! l X fH-12,997MHa(7
) A color subcarrier 0o82πf8°・t is supplied, and synchronous detection is performed by transmitting this color ff1lWI wave to obtain a gamut color signal O.
The demodulated signal wH is supplied to the adder DD8 via a bandpass filter 15 having a frequency response characteristic shown in FIG. 3(0), similar to the bandpass filter 8 in the preprocessing device. During the horizontal scanning period in which the adder DD8 is multiplexed with the gamut color signal component 'wn, the switches SW6 and SW6 are both connected to the lower contacts as shown in the figure. Therefore, a completely reconstructed broadband color signal Cw is taken out from the adder DD8. Note that during the horizontal scanning period when the conveyed gamut color signal component OWH is not multiplexed, both switches SW5 and SW6 are connected to the upper contacts, so that the narrowband color signal ON is taken out to the output side as it is. Ru. Therefore, through such post-processing, each signal component of the pigeon-quality color television signal supplied to the processing device shown in FIG. is according to the amplitude frequency characteristics shown in Figure 8 (・).
Although some area components are missing horizontally, there is virtually no engraving on the p+ raw image quality, and it can be said that it has been completely restored and reproduced.

上述したように、第9図示の構成による後処理装置によ
れば、本発明伝送方式によって高品位カラーテレビジョ
ン信号をほぼ完全に復元再生することができるが、第1
θ図(&)に示すような格段に簡単な構成の簡易型後処
理装置によっても、はぼ同様の復元再生を行なうことが
できる。すなわ私図示の構成による簡易型後処理装置に
おいては。
As described above, according to the post-processing device having the configuration shown in FIG.
Even with a simplified post-processing device having a much simpler configuration as shown in the θ diagram (&), similar restoration and reproduction can be performed. In other words, in the simple post-processing device with the configuration shown in the figure.

第8図示の時間軸分離伸張装置からの第4図に示したよ
うな信号波形を有する前処理済み各信号成分のうち、低
域色信号OWLおよび狭帯域色信号ONについては、何
らの信号処理も施さず、その1まの形態にて出力側に線
順次色信号として取出す。
Among the preprocessed signal components having the signal waveforms shown in FIG. 4 from the time axis separation and expansion device shown in FIG. The color signal is outputted as a line-sequential color signal to the output side in its first form without being applied.

また、前処理済みN度信号成分YおよびY′+0/WH
については、水平走査周期の1周期おきに、スイッチS
W9を介し、第1θ図(b)に示す周波数レスポンス特
性を有する低域1111過フイルタ16に供給すること
により、スイッチSW9および5WIOが図カのように
ともに上側接点に接続されているとき、搬送高域色信号
成分0鼻□を周波数多重した画像信号の周波数17 M
H!g以上の信号成分を除去して、信号帯域17 MH
zの輝度信号Y′を、スイッチSW9および5WIOが
ともに下側接点に接続されているときの信号帯域20 
MHzの輝度信号Yと水平走査周期交互に取出す。かか
る後処理によれは、信号帯域17 MH+wとgOMH
mとの輝度信号および帯域幅をともに4MHmにした広
帯域色信号と狭帯域色信号とが水平走査周期交互に得ら
れることになる。
Also, the preprocessed N-degree signal components Y and Y'+0/WH
, the switch S is turned on every other period of the horizontal scanning period.
When switches SW9 and 5WIO are both connected to the upper contacts as shown in Figure F, the conveyance Frequency of image signal frequency multiplexed with high frequency color signal component 0 nose □ 17 M
H! Signal band 17 MH by removing signal components of g or more
z brightness signal Y' in the signal band 20 when switches SW9 and 5WIO are both connected to the lower contacts.
The MHz luminance signal Y and the horizontal scanning period are taken out alternately. Due to such post-processing, the signal band 17 MH+w and gOMH
A wideband chrominance signal and a narrowband chrominance signal, both of which have a luminance signal of 4 MHm and a bandwidth of 4 MHm, are obtained alternately in the horizontal scanning period.

したがって、第10図示の構成による簡易型後処理装置
を用いれば、高品位カラーテレビジョン信号における広
帯域色信号の信号帯域幅が8 MHzだけ狭くなるとと
もに、輝度信号の信号帯域が1水平走査周期おきに8 
MHzだけ狭くなるので、再生カラー−像の解像度が若
干低下することになるが。
Therefore, if the simple post-processing device having the configuration shown in Figure 10 is used, the signal bandwidth of the broadband color signal in a high-definition color television signal will be narrowed by 8 MHz, and the signal band of the luminance signal will be narrowed by 8 MHz. to 8
Since the width is narrowed by MHz, the resolution of the reproduced color image will be slightly reduced.

受信復調装置の構成がそれだけ簡単化されるので、製造
価格の大輪な低域を図ることができる0以上の睨明から
明らかなように1本発明TOI伝送方式を用いて爾品位
カラーテレビジョン信号を伝送した場合には、つきのよ
うなTh着な効果が得られる。
Since the configuration of the receiving and demodulating device is simplified, it is possible to achieve a low-frequency range with a large manufacturing cost.As is clear from the 0 or more signal, it is possible to produce a higher quality color television signal using the TOI transmission system of the present invention. When transmitting , a thin effect like a tsuki can be obtained.

すなわち、従来、放送衛星回線を用いて間品位カラーテ
レビジョン信号を伝送する際には、V頭に述べたように
2チャネル分の回線を使用して輝度信号と色信号とを分
離伝送していたのに対し、本発明T(3I伝送方式によ
れば、従来の輝度信号伝送用回1mlチャネル分のみに
て高品位カラーテレビジョン信号伝送し、はぼ同程度の
カラー画質をもってカラー画像を再生表示することがで
きる。
In other words, conventionally, when transmitting high-definition color television signals using a broadcasting satellite line, a line for two channels is used to separate and transmit the luminance signal and the color signal. On the other hand, according to the present invention T (3I transmission system), high-quality color television signals are transmitted using only 1 ml channel of conventional luminance signal transmission, and color images are reproduced with approximately the same color image quality. can be displayed.

かかる伝送帯域幅の節減は、am次色信号を輝度信号成
分に周波数多重および時間軸圧縮時分割多重した本発明
伝送方式の格別の効果であり、そのチャネル帯域が輝度
信号を伝送するにも足りぬ極度に狭い場合には、かかる
狭帯域チャネルを仮数チャネル使用して1分融伝送し得
ること勿論であるO つぎに、本発明TOI伝送方式をFM伝送に適用した場
合には、信号スペクト2ムの鵬域に強い信号成分が分布
していれば、 FM伝送個有の三角ノイズによってその
信号成分の8N比劣化の問題が生ずるのに対し、本発明
方式の伝送信号においてはその烏城には搬送高域色信号
成分’wnが周波数多重されてはいるが、そのエネルギ
ーが小さく、伝送信号における色情報エネルギーの大部
分は低域に時間軸圧縮時分割多重した低域色信号成分O
WLおよび狭帯域色信号ONによって伝送されており、
したがって、 FM伝送の三角ノイズによる色情報の品
質劣化は軽微となる。
Such reduction in transmission bandwidth is a special effect of the transmission method of the present invention in which the am-order chrominance signal is frequency-multiplexed and time-base compressed time-division multiplexed into the luminance signal component, and the channel bandwidth is sufficient to transmit the luminance signal. In the case where the narrow band channel is extremely narrow, it is of course possible to perform 1-fraction transmission using the mantissa channel.Next, when the TOI transmission method of the present invention is applied to FM transmission, the signal spectrum 2 If a strong signal component is distributed in the high frequency region of the signal, the triangular noise inherent in FM transmission will cause a problem of deterioration of the 8N ratio of the signal component. Although the carrier high-frequency color signal component 'wn is frequency-multiplexed, its energy is small, and most of the color information energy in the transmission signal is transferred to the low-frequency color signal component O, which is time-division-multiplexed with time axis compression.
It is transmitted by WL and narrowband color signal ON,
Therefore, the quality deterioration of color information due to triangular noise in FM transmission is slight.

また1回線の特性に基づく伝送信号の微分位相、微分利
得等の非直線ひずみについても、かかる非直線ひずみを
受は且つ^域成分としての搬送^域色信号OWHの信号
エネルギーが小さいのであるから、かかる非直線ひずみ
が再生カラー画質に及ばず影響も軽微となる。
Furthermore, regarding non-linear distortion such as differential phase and differential gain of the transmission signal based on the characteristics of a single line, it is possible to receive such non-linear distortion and the signal energy of the carrier gamut color signal OWH as a ^-region component is small. , such non-linear distortion does not affect the reproduced color image quality and its influence is slight.

さらに、輝度信号と色信号とを周波数多重する場合に生
ずるクロスカラーの間喧についても1本発明伝送方式に
おいては、輝度信号Yと搬送高域色信号成分OWHとの
双方が交互に間挿される櫛形特性をそれぞれ有する1組
の櫛型フィルタを介して互いに周波数間挿して多重する
領域の信号エネルギーを除去した状態にて相互に周波数
間挿されるのであるから、相互間のクロストークによる
いわゆるクロスカラーはほとんど生じないことになるO なお、輝度信号の高域に横型特性をもたせるのであるか
ら、再生表示したカラー画像においては輝度情−報の斜
め方向の変化成分が失なわれることにはなるが、かかる
櫛型特性を呈するのは1水平走査周期おきであるから、
少なくとも1水平走査周期おきには完全にその斜め方向
の変化が伝送され、再生表示されているのであるから、
かかる櫛型特性によるh生画質の劣化も極めて@値であ
るOまた、水平同期信号を1水平走査周期おきに間欠伝
送する点についても、水平同期信号を伝送しない水平走
査周期においては、その信号期間をプランヤング信号と
して用いているので、直流分再生保持のための所定直流
レベルのクランプを確実に行ない得るという別の効果が
得られるOなお、受信復1i14装置についても、@9
図示の構成による後処理を行なえば、はぼ完全に高品位
力?−thi像を再生表示することができ、第10図示
の構成による簡易後処理を行なった場合においても、多
少の解像度低下を伴なうのみにて受信復調装置の製造価
格を大幅に低減させて、その晋及を容易にするという格
別の効果が得られる〇
Furthermore, regarding cross-color interference that occurs when frequency multiplexing a luminance signal and a chrominance signal, in the transmission system of the present invention, both the luminance signal Y and the carrier high-frequency chrominance signal component OWH are alternately interpolated. Since the frequencies are interpolated mutually through a pair of comb-shaped filters each having a comb-shaped characteristic and the signal energy in the multiplexed region is removed, so-called cross color due to mutual crosstalk occurs. However, since the high frequency range of the luminance signal has a horizontal characteristic, the diagonal change component of the luminance information will be lost in the reproduced color image. , since such a comb-shaped characteristic is exhibited every other horizontal scanning period,
Since the change in the diagonal direction is completely transmitted and reproduced at least every other horizontal scanning period,
The deterioration of the raw image quality due to such comb-shaped characteristics is also extremely negative.Also, with regard to the fact that the horizontal synchronization signal is intermittently transmitted every other horizontal scanning period, in the horizontal scanning period in which the horizontal synchronization signal is not transmitted, the signal Since the period is used as a Plan-Young signal, another effect can be obtained in that a predetermined DC level can be reliably clamped for DC component regeneration and maintenance.
If you perform post-processing using the configuration shown in the figure, you will have completely high-quality results. - It is possible to reproduce and display the thi image, and even when simple post-processing is performed using the configuration shown in FIG. A special effect can be obtained that facilitates its advancement〇

【図面の簡単な説明】[Brief explanation of the drawing]

第1図(→a (b) e (o)は^品位カラーテレ
ビジョン信号の各構成要嵩信号成分の周波微スペクトラ
ムをそれぞれ模式的に示す特性曲aS。 第2図(&)および(b)〜(−)は本発明伝送方式に
おける前処理装置の構成例およびその構成に用いる各種
フィルタの周波数レスポンス特性をそれぞれ示すブロッ
ク4I図および特性曲線Ij1!J。 第8図は同じくその前処理装置における処理済み色信号
成分の周波数スペクトラを模式的に示す特性曲4I図。 第4図は同じくその前処理装置における処理済みカラー
テレビジョン信号の信号波形の例な示す波形図、 第5図は同じくその処理ずみカラーテレビジョン信号の
周波数スペクトラムを模式的に示す特性曲線図。 第6図は本発明伝送方式における時間軸圧縮多重装置の
構成例を示すブロック線図、 第7図は同じくその時間軸圧縮多重装置の出力信号波形
の例を示す信号波形図、 第8図は本発明伝送方式における時間軸分離伸張装置の
構成例を示すブロック線図、 第9図は本発明伝送方式における後処理装置の構成例を
示すブロック線図、 第10図は同じくその後処理装置の簡易型にした他の構
成例を示すブロック線図である。 1.16・・・低域通過フィルタ、g、i5・・・帯域
通過フィルタ、 8.4.18.14・・・櫛型フィル
タ、5.10・・・アナログ−ディジタル変換器、6゜
11・・・ラインメモリ、フ、1g・・・ディジタル−
アナログ変換器、8,9・・・ゲート回路、ムDDI〜
ADD 8・・・加算器、MPLI 、 MPLg・・
・掛算器、5Wl−8WIO・・・スイッチ。 第4図 第5図 第7図
Figure 1 (→a (b) e (o) is a characteristic curve aS that schematically shows the frequency fine spectrum of each constituent bulk signal component of a quality color television signal. Figure 2 (&) and (b ) to (-) are block diagrams 4I and characteristic curves Ij1!J respectively showing a configuration example of a preprocessing device in the transmission system of the present invention and frequency response characteristics of various filters used in the configuration. FIG. 4 is a waveform diagram schematically showing the frequency spectrum of the processed color signal component in the preprocessing device. FIG. A characteristic curve diagram schematically showing the frequency spectrum of the processed color television signal. Fig. 6 is a block diagram showing a configuration example of a time axis compression multiplexing device in the transmission system of the present invention, and Fig. 7 is a diagram showing the same time axis. A signal waveform diagram showing an example of the output signal waveform of the compression/multiplexing device, FIG. 8 is a block diagram showing an example of the configuration of the time-base demultiplexing device in the transmission system of the present invention, and FIG. 9 is a post-processing device in the transmission system of the present invention. Fig. 10 is a block diagram showing another example of a simplified configuration of the post-processing device. 1.16...low-pass filter, g, i5...・Band pass filter, 8.4.18.14...Comb filter, 5.10...Analog-digital converter, 6゜11...Line memory, F, 1g...Digital-
Analog converter, 8, 9...gate circuit, mu DDI~
ADD 8... Adder, MPLI, MPLg...
・Multiplier, 5Wl-8WIO...switch. Figure 4 Figure 5 Figure 7

Claims (1)

【特許請求の範囲】 L 輝度信号、広帯域色信号および狭帯域色信号よりな
るカラーテレビジョン信号をTOI伝送するにあたり、
前記広帯域色信号を%前記*@域色信号とほぼ同一の帯
域を有する低域色信号成分と前記同一の舒域を超えた帯
域を有する高域色信号成分とに分離し、1水平走査期間
おきに前記輝度信号に前記高域色信号成分を周波数多重
するともに、水平走査期間交互にして前記低域色信号成
分と前記狭帯域色信号とを組合わせたS順次色信号を時
間軸圧縮して前記輝度信号に時分割多重するようにした
ことを特徴とするTOI伝送方式0 2、特許請求の範囲第1項記載のTOI伝送方式におい
て、水平同期信号を1水平走査期間おきの水平走査期間
に伝送するとともに、他の水平走査期間における水平同
期信号期間にはブランキング信号を伝送するようにした
ことを特徴とするT(3I伝送方式。
[Claims] In TOI transmission of a color television signal consisting of a luminance signal, a wideband color signal, and a narrowband color signal,
The wide-band color signal is separated into a low-band color signal component having almost the same band as the above *@ range color signal and a high-band color signal component having a band exceeding the same range, and is processed for one horizontal scanning period. Frequency-multiplexing the high-band color signal component onto the luminance signal at every turn, and time-base compressing the S-sequential color signal, which is a combination of the low-band color signal component and the narrowband color signal, alternately during the horizontal scanning period. A TOI transmission method according to claim 1, characterized in that the horizontal synchronization signal is time-division multiplexed on the luminance signal by one horizontal scanning period. A T (3I transmission method) characterized in that a blanking signal is transmitted during a horizontal synchronizing signal period in another horizontal scanning period.
JP57002806A 1982-01-13 1982-01-13 Tci transmission system Pending JPS58120386A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57002806A JPS58120386A (en) 1982-01-13 1982-01-13 Tci transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57002806A JPS58120386A (en) 1982-01-13 1982-01-13 Tci transmission system

Publications (1)

Publication Number Publication Date
JPS58120386A true JPS58120386A (en) 1983-07-18

Family

ID=11539621

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57002806A Pending JPS58120386A (en) 1982-01-13 1982-01-13 Tci transmission system

Country Status (1)

Country Link
JP (1) JPS58120386A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4944032A (en) * 1986-07-14 1990-07-24 Matsushita Electric Industrial Co., Ltd. Multiplex signal processing apparatus
US4985769A (en) * 1988-03-23 1991-01-15 Matsushita Electric Industrial Co., Ltd. Multiplex TV signal processing apparatus
US5055916A (en) * 1989-12-11 1991-10-08 General Electric Company Chrominance encoding for a widescreen television system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4944032A (en) * 1986-07-14 1990-07-24 Matsushita Electric Industrial Co., Ltd. Multiplex signal processing apparatus
US4985769A (en) * 1988-03-23 1991-01-15 Matsushita Electric Industrial Co., Ltd. Multiplex TV signal processing apparatus
US5055916A (en) * 1989-12-11 1991-10-08 General Electric Company Chrominance encoding for a widescreen television system

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