JPS6397084A - Transmitting device for high definition television signal - Google Patents
Transmitting device for high definition television signalInfo
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- JPS6397084A JPS6397084A JP61242607A JP24260786A JPS6397084A JP S6397084 A JPS6397084 A JP S6397084A JP 61242607 A JP61242607 A JP 61242607A JP 24260786 A JP24260786 A JP 24260786A JP S6397084 A JPS6397084 A JP S6397084A
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- 230000008054 signal transmission Effects 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 19
- 238000001228 spectrum Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002123 temporal effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
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Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、高精細テレビジョン信号方式のうち現存の
テレビジョン受＠！機でも受信できる方式で信号伝送を
行う装置に関し、特にその高精細信号を従来のテレビジ
ラン信号の帯域内にシフトする方式に関するものである
。[Detailed Description of the Invention] [Industrial Application Field] This invention is applicable to the existing television receiver@! of the high-definition television signal system. The present invention relates to a device for transmitting signals in a manner that can be received by a television receiver, and particularly to a method for shifting the high-definition signal into the band of conventional television broadcast signals.
従来、ＮＴＳＣテレビジョン信号方式と完全に交信性の
ある高精細テレビジョン信号方式として、電子通信学会
技術報告Ｃ５８３−６１ｒ完全交信性を有する高精細Ｔ
Ｖ方式の提案」 （昭和５８年７月９日発表）に述べら
れた方式がある。第８図（ａ）〜（Ｃ）はその方式によ
る一例を３次元周波数領域にて示した図である。この例
では、輝度信号の高域成分ＹＨ（高精細情報）を第８図
（ａ）、 （ｂ）のＹＨ’に示すように周波数変換して
、現行のテレビジョン信号の伝送帯域内に周波数シフト
し、同図（Ｃ）に示すように輝度信号の低域成分ＹＬ、
色信号Ｃに多重化して伝送している。ここで、第８図（
ａ）〜（Ｃ１において、μは水平空間周波数、νは垂直
空間周波数、ｆは時間空間周波数であり、ν０は５２５
／２（ｌｉｎｅ／ｂｅｉｇｈｔ）、ｆｏは３０Ｈｚであ
る。Conventionally, as a high-definition television signal system that is fully compatible with the NTSC television signal system, the Institute of Electronics and Communication Engineers Technical Report C583-61r is a high-definition T that is fully compatible with the NTSC television signal system.
There is a method described in "Proposal of Method V" (published on July 9, 1981). FIGS. 8(a) to 8(C) are diagrams showing an example of this method in a three-dimensional frequency domain. In this example, the high-frequency component YH (high-definition information) of the luminance signal is frequency-converted as shown in YH' in Fig. 8(a) and (b), and the frequency is within the transmission band of the current television signal. As shown in the same figure (C), the low frequency component YL of the luminance signal is shifted,
The color signal C is multiplexed and transmitted. Here, Fig. 8 (
a) ~ (In C1, μ is the horizontal spatial frequency, ν is the vertical spatial frequency, f is the temporal spatial frequency, and ν0 is 525
/2 (line/beight), fo is 30Hz.
このように従来の方式では、現行のＮＴＳＣテレビジョ
ン方式に完全交信性を持たせて、広帯域の輝度信号を狭
帯域の周波数帯で伝送しているが、伝送される色信号の
帯域が狭いという問題があった。In this way, in the conventional system, the current NTSC television system has full communication capability, and a wideband luminance signal is transmitted in a narrow frequency band, but the band of the transmitted color signal is narrow. There was a problem.
この発明は上記のような問題点を解消するためになされ
たもので、現行のＮＴＳＣテレビジョン方式に完全交信
性を持たせて、広帯域の輝度信号及び色信号を狭帯域の
周波数帯で伝送することのできる高精細テレビジョン信
号伝送装置を得ることを目的とする。This invention was made to solve the above-mentioned problems, and it makes the current NTSC television system fully compatible and transmits wideband luminance signals and color signals in a narrow frequency band. The object of the present invention is to obtain a high-definition television signal transmission device capable of transmitting high-definition television signals.
この発明に係る高精細テレビジョン信号伝送装置は、輝
度信号Ｙの高域成分と色差信号Ｉ又はＱの高域成分を各
々輝度信号２色差信号から分離する分離手段と、これら
をそれぞれ周波数変換する周波数変換手段と、該周波数
変換された各信号を直交変調する変調手段と、該変調さ
れた信号を、現行ＮＴＳＣテレビジョンの時間−垂直周
波数領域において色信号成分が多重化される領域と対称
位置の領域に多重化して出力する信号多重化手段とを設
けたものである。The high-definition television signal transmission device according to the present invention includes a separation means for separating the high-frequency component of the luminance signal Y and the high-frequency component of the color difference signal I or Q from the luminance signal and the two color difference signals, and frequency converting them respectively. a frequency conversion means, a modulation means for orthogonally modulating each of the frequency-converted signals, and a modulation means for orthogonally modulating the frequency-converted signals; A signal multiplexing means is provided for multiplexing and outputting signals in the area.
この発明においては、輝度信号だけではなく色差信号の
高域成分をも各信号から分離し、これらを所定周波数シ
フトし、直交２相変調した後、現行ＮＴＳＣテレビジョ
ン信号に多重化して伝送する。In this invention, not only the luminance signal but also the high-frequency components of the color difference signals are separated from each signal, shifted by a predetermined frequency, subjected to orthogonal two-phase modulation, and then multiplexed with the current NTSC television signal and transmitted.
以下、本発明の実施例を図について説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
第１図はこの発明の一実施例による高精細テレビジョン
信号伝送装置の送信側の構成を示すブロック図である。FIG. 1 is a block diagram showing the configuration of the transmission side of a high-definition television signal transmission apparatus according to an embodiment of the present invention.
図において、ｌはＹ信号入力端子、２は■信号入力端子
、３はＱ信号入力端子、４はＹ信号入力端子１に接続さ
れた高域通過フィルタ、５は■信号入力端子２に接続さ
れた高域通過フィルタ、６は高域通過フィルタ４の入力
及び出力を入力とする減算器、７は高域通過フィルタ５
の入力及び出力を入力とする減算器である。８は高域通
過フィルタ４の出力を入力とする周波数変換回路、９は
高域通過フィルタ５の出力を入力とする周波数変換回路
、１０は周波数変換回路８及び９の出力を入力とする変
調回路、１１は減算器７の出力及びＱ信号入力端子３に
到来する信号を入力とする変調回路である。１２は減算
器６の出力を入力とする時空間フィルタ、１３は変調回
路１０及び１１の出力を入力とする加算器、１４は加算
器６及び時空間フィルタ１２の出力を入力とする減算器
、１５は加算器１３の出力を入力とする時空間フィルタ
、１６は減算器１４及び時空間フィルタ１５の出力を入
力とする加算器、１７は加算器１６の出力端子、即ち高
精細テレビジョン信号出力端子である。In the figure, l is the Y signal input terminal, 2 is the ■signal input terminal, 3 is the Q signal input terminal, 4 is the high-pass filter connected to the Y signal input terminal 1, and 5 is the ■signal input terminal 2. 6 is a subtractor that receives the input and output of the high-pass filter 4, and 7 is a high-pass filter 5.
This is a subtracter whose inputs are the input and output of . 8 is a frequency conversion circuit that receives the output of the high-pass filter 4 as an input, 9 is a frequency conversion circuit that receives the output of the high-pass filter 5 as an input, and 10 is a modulation circuit that receives the outputs of the frequency conversion circuits 8 and 9 as input. , 11 is a modulation circuit which receives the output of the subtracter 7 and the signal arriving at the Q signal input terminal 3 as input. 12 is a space-time filter that receives the output of the subtracter 6; 13 is an adder that receives the outputs of the modulation circuits 10 and 11; 14 is a subtracter that receives the outputs of the adder 6 and the space-time filter 12; 15 is a spatiotemporal filter that receives the output of the adder 13; 16 is an adder that receives the outputs of the subtracter 14 and the spatiotemporal filter 15; and 17 is an output terminal of the adder 16, that is, a high-definition television signal output. It is a terminal.
また、第２図は受信側の構成を示すブロック図である。Further, FIG. 2 is a block diagram showing the configuration of the receiving side.
第２図において、２１は高精細テレビジョン信号入力端
子、２２は高精細テレビジョン信号入力端子２１に接続
された時空間フィルタ、２３は時空間フィルタ２２の入
力及び出力を入力とする減算器、２４は時空間フィルタ
２２の出力を入力とする時空間フィルタである。２５は
時空間フィルタ２４の入力及び出力を入力とする減算器
、２６は時空間フィルタ２４の出力を入力とする復調回
路、２７は復調回路２６の出力を入力とする周波数変換
回路、２８は減算器２５の出力を入力とする復調回路、
２９は復調回路２６の出力を入力とする周波数変換回路
である。３０は周波数変換回路２７及び復調回路２８の
出力を入力とする加算器、３１は減算器２３及び周波数
変換回路２９の出力を入力とする加算器、３２は加算器
３１の出力端子でＹ信号出力端子、３３は加算器３０の
出力端子で■信号出力端子、３４は復調回路２８の出力
端子でＱ信号出力端子である。In FIG. 2, 21 is a high-definition television signal input terminal, 22 is a spatio-temporal filter connected to the high-definition television signal input terminal 21, and 23 is a subtracter whose inputs are the input and output of the spatio-temporal filter 22; 24 is a spatio-temporal filter that receives the output of the spatio-temporal filter 22 as an input. 25 is a subtracter that receives the input and output of the space-time filter 24, 26 is a demodulation circuit that receives the output of the space-time filter 24, 27 is a frequency conversion circuit that receives the output of the demodulation circuit 26, and 28 is a subtractor. a demodulation circuit whose input is the output of the device 25;
29 is a frequency conversion circuit which receives the output of the demodulation circuit 26 as an input. 30 is an adder that receives the outputs of the frequency conversion circuit 27 and the demodulation circuit 28, 31 is an adder that receives the outputs of the subtracter 23 and the frequency conversion circuit 29, and 32 is the output terminal of the adder 31, which outputs a Y signal. Terminal 33 is the output terminal of the adder 30 and is a signal output terminal, and 34 is the output terminal of the demodulation circuit 28 and is a Q signal output terminal.
次に動作について説明する。Next, the operation will be explained.
送信側のＹ信号入力端子１には、水平方向に０〜６ Ｍ
Ｈ２Ｉ垂直一時間方向に第３図（ａ）に示す斜線領域に
帯域制限されたディジタル輝度信号（Ｙ信号）が入力さ
れる。■信号入力端子２には、水平方向にＯ〜２． ５
ＭＨｚ、垂直一時間方向に第３図（ｂ）に示す斜線領
域に帯域制限されたディジタル色差信号（■信号）が入
力される。Ｑ信号入力端子３には、水平方向に０〜０．
５ ＭＨｚ、垂直一時間方向に第３図（ｂ）に示す斜
線領域に帯域制限されたディジタル色差信号（Ｑ信号）
が入力される。Ｙ。Y signal input terminal 1 on the transmitting side has 0 to 6 M in the horizontal direction.
A band-limited digital luminance signal (Y signal) is input into the hatched area shown in FIG. 3(a) in the H2I vertical one-time direction. ■Signal input terminal 2 has O~2. 5
A digital color difference signal (■ signal) whose frequency is MHz and whose band is limited in the diagonally shaded area shown in FIG. 3(b) in the vertical one-time direction is input. The Q signal input terminal 3 has signals from 0 to 0 in the horizontal direction.
5 MHz, digital color difference signal (Q signal) whose band is limited to the shaded area shown in Fig. 3(b) in the vertical one-time direction.
is input. Y.
Ｉ、 Ｑ信号は、５２５本、６０フイールド／３０フレ
ームのインクレース走査信号である。Ｙ信号の水平方向
の高域成分ＹＨ（４，２〜６ Ｍｌｌｚ）は高域通過フ
ィルタ４で抜き取られ、周波数変換回路８で周波数変換
された後、帯域制限される。この周波数変換回路８の出
力ＹＨ″の水平方向の周波数帯域を第４図（ａ）に示す
、減算器６はＹ信号入力端子１に到来するＹ信号から高
域通過フィルタ４の出力ＹＨを引き算するので、減算器
６の出力にはＹ信号の低域成分ＹＬ （０〜４． ２
Ｍｎ２）が得られる。The I and Q signals are incremental scanning signals of 525 lines and 60 fields/30 frames. The horizontal high-frequency component YH (4,2 to 6 Mllz) of the Y signal is extracted by a high-pass filter 4, frequency-converted by a frequency conversion circuit 8, and then band-limited. The horizontal frequency band of the output YH" of the frequency conversion circuit 8 is shown in FIG. Therefore, the output of the subtracter 6 contains the low frequency component YL (0 to 4.2
Mn2) is obtained.
同様に１信号の高域成分ＩＨ（１，５〜２．５ＭＨｚ）
は、高域通過フィルタ５で抜き取られ、周波数変換回路
９で周波数変換されて後、帯域制限される。この周波数
変換回路９の出力ＩＨ’の水平方向の周波数帯域を第４
図（ｂ）に示すゆ減算器７は■信号入力端子２に到来す
る■信号から高域通過フィルタ５の出力ｒＨを引き算す
るので、減算器７の出力には■信号の低域成分ＩＬ（０
〜１゜５ Ｍｎ２）が得られる。Similarly, the high frequency component IH (1.5 to 2.5 MHz) of one signal
is extracted by a high-pass filter 5, frequency-converted by a frequency conversion circuit 9, and then band-limited. The horizontal frequency band of the output IH' of this frequency conversion circuit 9 is
Since the Yu subtracter 7 shown in FIG. 0
~1°5 Mn2) is obtained.
周波数変換回路８及び９の再出力は、変調回路１０で搬
送波μ０で直交２相変調された後、水平方向に帯域制限
される。搬送波μ０は水平方向の周波数μ＝３．２ＭＨ
ｚで垂直一時間方向で第５図に示す位相関係を満たす波
である。変調回路１０の出力（ＹＨ”＋ ＩＨ”）の水
平方向の周波数帯域を第４図（Ｃ）に、垂直一時間方向
の周波数帯域を第６図中）に示す。The re-outputs of the frequency conversion circuits 8 and 9 are subjected to orthogonal two-phase modulation using the carrier wave μ0 in the modulation circuit 10, and then band-limited in the horizontal direction. The carrier wave μ0 has a horizontal frequency μ=3.2MH
It is a wave that satisfies the phase relationship shown in FIG. 5 in the vertical time direction at z. The horizontal frequency band of the output (YH"+IH") of the modulation circuit 10 is shown in FIG. 4(C), and the vertical frequency band in the temporal direction is shown in FIG.
一方、減算器７の出力ＩＬと入力端子３からのＱ信号は
、変調回路１１で現行ＮＴＳＣテレビジョン方式と同じ
方法で色副用送波ｆｓｃで直交２相変調された後、水平
方向に帯域制限される。変調回路１１の出力ＣＬの水平
方向の周波数帯域を第４図（ｄ）に、垂直一時間方向の
周波数帯域を第６図（ａ）に示す。On the other hand, the output IL of the subtracter 7 and the Q signal from the input terminal 3 are subjected to quadrature two-phase modulation using the color sub-transmission wave fsc in the same manner as the current NTSC television system in the modulation circuit 11. limited. The frequency band of the output CL of the modulation circuit 11 in the horizontal direction is shown in FIG. 4(d), and the frequency band in the vertical time direction is shown in FIG. 6(a).
変調回路１０及び１１の出力は加算器１３で加算された
後、時空間フィルタ１５で帯域制限される・時空間フィ
ルタ１５は垂直一時間方向のフィルタで、その通過域を
第６図（Ｃ１に示す。また、時空間フィルタ１２は上記
時空間フィルタ１５と同じ特性のフィルタで、減算器６
の出力ＹＬは時空間フィルタ１２と減算器１４で帯域制
限される。The outputs of the modulation circuits 10 and 11 are summed by an adder 13, and then band-limited by a spatio-temporal filter 15.The spatio-temporal filter 15 is a filter in the vertical temporal direction, and its passband is shown in Fig. 6 (C1). Furthermore, the spatio-temporal filter 12 has the same characteristics as the spatio-temporal filter 15 described above, and the subtracter 6
The output YL is band-limited by a spatio-temporal filter 12 and a subtracter 14.
減算器１４の出力の垂直一時間方向の周波数帯域を第７
図（ａ）に、時空間フィルタ１５の出力の垂直一時間方
向の周波数帯域を第７図（ｔ＋）に示す、加算器１６は
時空間で完全に分離された減算器１４の出力と時空間フ
ィルタ１５の出力を加算する。このようにして、加算器
１６の出力端子１７に第７図（Ｃ）に示す形式の高精細
テレビジョンｆＢ号が得られる。The frequency band in the vertical time direction of the output of the subtracter 14 is
7 (t+) shows the frequency band of the output of the spatio-temporal filter 15 in the vertical one-time direction. Add the outputs of filter 15. In this way, a high-definition television fB number in the format shown in FIG. 7(C) is obtained at the output terminal 17 of the adder 16.
受信側では、上記出力端子１７に得られる信号から、元
のＹ、Ｉ、Ｑ信号を再生する。受信側の時空間フィルタ
２２は、送信側のフィルタ１２゜１５と同じ特性のフィ
ルタであり、端子２１に到来する信号から（ＹＨ”＋Ｉ
Ｈ’”）とＣＬとを抜き取る。減算器２３は入力端子
２１に到来する信号から時空間フィルタ２２の出力を引
き算するので、減算器２３の出力にはＹＬが得られる。On the receiving side, the original Y, I, and Q signals are reproduced from the signals obtained at the output terminal 17. The spatio-temporal filter 22 on the receiving side is a filter with the same characteristics as the filter 12 15 on the transmitting side, and from the signal arriving at the terminal 21 (YH"+I
Since the subtracter 23 subtracts the output of the space-time filter 22 from the signal arriving at the input terminal 21, YL is obtained as the output of the subtracter 23.
時空間フィルタ２４はその前段の上記時空間フィルタ２
２の出力から（ＹＨ”＋ ＩＨ”）を抜き取るもので、
その通過域は第６図中）に示す周波数領域である。減算
器２５は時空間フィルタ２２の出力から時空間フィルタ
２４の出力を引き算するので、減算器２５の出力にはＣ
Ｌが得られる。The spatio-temporal filter 24 is the spatio-temporal filter 2 at the preceding stage.
It extracts (YH" + IH") from the output of 2,
Its passband is the frequency region shown in Fig. 6). Since the subtracter 25 subtracts the output of the spatio-temporal filter 24 from the output of the spatio-temporal filter 22, the output of the subtracter 25 has C.
L is obtained.
復調回路２６は時空間フィルタ２４の出力の（ＹＨ”＋
Ｉ Ｈ”）を同期検波シテ、’３４ 図（ａｔ ニ示
す周波数帯域のＹＨ’ と第４図（ｂ）に示す周波数帯
域のＩＨ’ を出力する。この復調回路２６の出力ＹＨ
”は送信側と同じ方法で周波数変換回路２９でＹＨに変
換される。また、Ｉ Ｈ”は周波数変換回路２７でＩＨ
に変換される。復調回路２８は減算器２５の出力のＣＬ
を現行ＮＴＳＣ受信機と同じ方法で同期検波して、Ｑ信
号とＩＬとを出力する。加算器３１は減算器２３の出力
ＹＬと周波数変換回路２９の出力ＹＨを加算する。また
、加算器３０は周波数変換回路２７の出力ＩＨと復調回
路２８の出力ＩＬとを加算する。こうして加算器３１の
出力端子３２にＹ ｆｉ号が、加算３０の出力端子３３
に１信号が、復調器２８の出力端子３４にＱ信号が再生
される。The demodulation circuit 26 outputs (YH”+
YH' in the frequency band shown in Figure 4(at) and IH' in the frequency band shown in Figure 4(b) are output by synchronous detection.
” is converted to YH by the frequency conversion circuit 29 in the same way as on the transmitting side. Also, IH” is converted to IH by the frequency conversion circuit 27.
is converted to The demodulation circuit 28 uses the CL of the output of the subtracter 25.
is synchronously detected using the same method as the current NTSC receiver, and outputs a Q signal and IL. The adder 31 adds the output YL of the subtracter 23 and the output YH of the frequency conversion circuit 29. Further, the adder 30 adds the output IH of the frequency conversion circuit 27 and the output IL of the demodulation circuit 28. In this way, the Y fi signal is sent to the output terminal 32 of the adder 31, and the signal Y fi is sent to the output terminal 33 of the adder 30.
1 signal is regenerated at the output terminal 34 of the demodulator 28, and the Q signal is regenerated at the output terminal 34 of the demodulator 28.
ここで、本方式の高精細テレビジ日ン信号方式で多重さ
れた高精細信号の振幅は、比較的小さなレベルである。Here, the amplitude of the high-definition signal multiplexed by the high-definition television signal system of this system is at a relatively small level.
また、搬送波μ０の位相は第５図に示すように、ライン
反転、フレーム反転するので、本方式の信号を現行ＮＴ
ＳＣテレビジョン受＠２機で再生しても妨害は目立たな
い。Furthermore, as shown in Figure 5, the phase of the carrier wave μ0 is line inverted and frame inverted, so the signal of this method can be compared to the current NT.
Even when playing back on two SC television receivers, the interference is not noticeable.
なお、上記実施例では色差信号■の高精細情報を伝送す
るようにしたが、これは色差信号Ｑの高精細情報を伝送
するようにしてもよい。In the above embodiment, the high-definition information of the color difference signal (2) is transmitted, but the high-definition information of the color difference signal (Q) may also be transmitted.
以上のように、この発明によれば、輝度信号の高域成分
と色信号の高域成分とを現行ＮＴＳＣテレビジョン方式
の信号スペクトルの隙間に周波数多重して伝送するよう
にしたので、現行ＮＴＳＣテレビジジン方式に完全交信
性を持たせて、広帯域の輝度信号と色信号とを伝送でき
る効果がある。As described above, according to the present invention, the high-frequency components of the luminance signal and the high-frequency components of the chrominance signal are frequency-multiplexed into the gap in the signal spectrum of the current NTSC television system and transmitted. This has the effect of imparting complete communication to the television digital system and transmitting wideband luminance signals and color signals.
第１図はこの発明の一実施例による高ネｎ細テレビジョ
ン信号伝送装置の送信側の構成図、第２図はその受信側
の構成図、第３図は上記送信側装置の信号を示す２次元
スペクトル図、第４図は上記装置の送信側と受信側の信
号を示す１次元スペクトル図、第５図は上記送信側装置
の搬送波の時空間での位相を示す説明図、第６図は上記
装置の送信側と受信側の信号とフィルタの特性を示す２
次元スペクトル図、第７図は上記装置の送信側と受信側
の信号を示す２次元スペクトル図、第８図は従来例の高
精細信テレビジョン信号を示す３次元スペクトル図であ
る。
１．２．３・・・Ｙ、Ｉ、Ｑ信号入力端子、４．５・・
・高域通過フィルタ、６，７，１４．２３．２５・・・
減算器、８，９，２７．２９・・・周波数変換回路、１
０．１１・・・変週回路、１２．１５，２２．２４・・
・時空間フィルタ、１３，１６，３０．３１・・・加算
器、１７・・・高精細テレビジョン信号出力端子、２１
・・・高精細テレビジョン信号入力端子、２６゜２８・
・・復調回路、３２，３３．３４・・・Ｙ、Ｉ、Ｑ信号
出力端子。
なお図中同一符号は同−又は相当部分を示す。FIG. 1 is a block diagram of the transmitting side of a high-density television signal transmission device according to an embodiment of the present invention, FIG. 2 is a block diagram of the receiving side thereof, and FIG. 3 shows signals of the transmitting side device. A two-dimensional spectrum diagram, FIG. 4 is a one-dimensional spectrum diagram showing signals on the transmitting side and receiving side of the above device, FIG. 5 is an explanatory diagram showing the phase in time and space of the carrier wave of the above transmitting side device, and FIG. 6 represents the characteristics of the signals and filters on the transmitting and receiving sides of the above device2
FIG. 7 is a two-dimensional spectrum diagram showing signals on the transmitting side and receiving side of the above device, and FIG. 8 is a three-dimensional spectrum diagram showing a conventional high-definition television signal. 1.2.3...Y, I, Q signal input terminal, 4.5...
・High-pass filter, 6, 7, 14.23.25...
Subtractor, 8, 9, 27.29...frequency conversion circuit, 1
0.11... odd week circuit, 12.15, 22.24...
・Space-time filter, 13, 16, 30. 31... Adder, 17... High-definition television signal output terminal, 21
...High-definition television signal input terminal, 26°28.
...Demodulation circuit, 32, 33.34...Y, I, Q signal output terminal. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
を有する高精細テレビジョン信号の伝送装置であって、 輝度信号Ｙの高域成分と色差信号Ｉ又はＱの高域成分を
各々輝度信号、色差信号から分離する信号分離手段と、 上記輝度信号、色差信号の高域成分をそれぞれ所定周波
数シフトする周波数変換手段と、 該周波数変換された上記各信号の高域成分を直交２相変
調する変調手段と、 該変調手段の出力を、現行ＮＴＳＣテレビジョンの時間
−垂直周波数領域において色信号成分が多重化される領
域と共役な領域に多重化して出力する信号多重化手段と
を備えたことを特徴とする高精細テレビジョン信号伝送
装置。(1) A high-definition television signal transmission device that has complete compatibility with the current NTSC television signal, which transmits the high-frequency component of the luminance signal Y and the high-frequency component of the color difference signal I or Q as the luminance signal and the color difference signal, respectively. A signal separating means for separating the signals from each other; a frequency converting means for shifting the high frequency components of the luminance signal and the color difference signal by predetermined frequencies; and a modulating means for performing orthogonal two-phase modulation of the high frequency components of the frequency-converted signals. and signal multiplexing means for multiplexing and outputting the output of the modulating means into an area conjugate to an area where color signal components are multiplexed in the time-vertical frequency domain of current NTSC television. High-definition television signal transmission equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61242607A JPS6397084A (en) | 1986-10-13 | 1986-10-13 | Transmitting device for high definition television signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61242607A JPS6397084A (en) | 1986-10-13 | 1986-10-13 | Transmitting device for high definition television signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6397084A true JPS6397084A (en) | 1988-04-27 |
Family
ID=17091565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61242607A Pending JPS6397084A (en) | 1986-10-13 | 1986-10-13 | Transmitting device for high definition television signal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6397084A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5014116A (en) * | 1988-03-10 | 1991-05-07 | Kabushiki Kaisha Toshiba | Color television system |
-
1986
- 1986-10-13 JP JP61242607A patent/JPS6397084A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5014116A (en) * | 1988-03-10 | 1991-05-07 | Kabushiki Kaisha Toshiba | Color television system |
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