JPS63107289A - Television signal processing system - Google Patents

Television signal processing system

Info

Publication number
JPS63107289A
JPS63107289A JP61251743A JP25174386A JPS63107289A JP S63107289 A JPS63107289 A JP S63107289A JP 61251743 A JP61251743 A JP 61251743A JP 25174386 A JP25174386 A JP 25174386A JP S63107289 A JPS63107289 A JP S63107289A
Authority
JP
Japan
Prior art keywords
signal
signals
circuit
television signal
television
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
Application number
JP61251743A
Other languages
Japanese (ja)
Other versions
JPH0828894B2 (en
Inventor
Takao Shimizu
孝雄 清水
Yoshiyuki Seki
祥行 関
Yasuhiro Hirano
裕弘 平野
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.)
Hitachi Ltd
Tokyo Broadcasting System Inc TBS
Fuji Telecasting Co Ltd
Original Assignee
Hitachi Ltd
Tokyo Broadcasting System Inc TBS
Fuji Telecasting Co Ltd
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 Hitachi Ltd, Tokyo Broadcasting System Inc TBS, Fuji Telecasting Co Ltd filed Critical Hitachi Ltd
Priority to JP61251743A priority Critical patent/JPH0828894B2/en
Publication of JPS63107289A publication Critical patent/JPS63107289A/en
Publication of JPH0828894B2 publication Critical patent/JPH0828894B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PURPOSE:To reproduce a picture with a high resolution even of the registration of a camera shifts by exploiting one of three primary color signals as a high frequency component with a high definition. CONSTITUTION:An arithmetic circuit 1 converts 1 converts signals R, G and B being output signals from a television camera into a luminance signal Y and color difference signals C1 and C2, and an encoder circuit 2 creates signals the same as an existing television signal. A high pass filter 3 extracts only the high frequency component of the signal G, and turns out to be a signal GH' that a frequency shift circuit 4 converts into an existing television signal band in a low frequency. An adder circuit 5 adds the signal GH' to the output of the encoder 2, which signal becomes a high definition television signal.

Description

【発明の詳細な説明】 [生業上の利用分野] に、広帯域の画像情報が伝送でき、しかも現在のテレビ
ジョンでも受像が可能なテレビジョン信号を得る方式に
関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Commercial Application] The present invention relates to a method for obtaining a television signal that can transmit wideband image information and can be received by current televisions.

[従来の技術] テレビジョン技術の普及、発展に伴ない、より高画質の
受像を得たいとの要求があり、種々の改良されたテレビ
ジョン方式が提案されている。
[Background Art] With the spread and development of television technology, there is a demand for higher quality image reception, and various improved television systems have been proposed.

その一つとして、現行のテレビジョン信号の信号形態、
伝送周波数帯域を保有して、高精細な画像情報、すなわ
ち、輝度成分として、現行のテレビジョン信号より高い
周波数成分を送受信できるテレビジョン方式が提案され
ている。(吹督、平野「完全交信性を有する高精細TV
方式の提案」、信学技報C383−61.1983年7
月)、。
One of them is the signal format of the current television signal,
A television system has been proposed that has a transmission frequency band and can transmit and receive high-definition image information, that is, a frequency component higher than the current television signal as a luminance component. (Bukou, Hirano ``High-definition TV with complete communication
"Proposal of a method", IEICE Technical Report C383-61. 1983 7
Month),.

この提案された方式では、輝度信号の4.2M Hz以
上の高周波成分を高精度情報として使用し、周波数シフ
トによって低周波成分に変換し、現行テレビジョン信号
のスペクトルの隙間に挿入して、送信の周波数帯域を現
行テレビジョン信号のそれと同じにして、現行テレビジ
ョンでも受像できるようにしている。
This proposed method uses high-frequency components of 4.2 MHz or higher in the luminance signal as high-precision information, converts them into low-frequency components by frequency shifting, inserts them into gaps in the spectrum of current television signals, and transmits the signals. The frequency band is the same as that of current television signals, so that it can be received even with current televisions.

[発明が解決しようとする問題点] しかし、この方式では、高精細情報として輝度信号の高
周波成分を使用するため、信号源として用いるテレビカ
メラなどは、レジストレーションを精密に合せる必要が
ある。
[Problems to be Solved by the Invention] However, in this method, the high-frequency component of the luminance signal is used as high-definition information, so the registration of a television camera or the like used as a signal source must be precisely adjusted.

すなわち、現行テレビジョン信号では、3原色信号赤(
R)、緑(G)、青(B)信号から輝度信号Yが Y=0.3OR+0.59G+0.11Bとなるように
合成されている。
In other words, in the current television signal, the three primary color signals red (
R), green (G), and blue (B) signals so that the luminance signal Y becomes Y=0.3OR+0.59G+0.11B.

したがって、R,G、B信号のレジストレーションのず
れが発生すると、この演算過程によって、輝度信号高周
波成分がなまり、明るさが変化するエツジ部などでは信
号波形がなまり高周波成分もなくなってしまうという問
題が発生する。
Therefore, when a misregistration of the R, G, and B signals occurs, the high-frequency components of the luminance signal become dull due to this calculation process, and the signal waveform becomes dull at edges where the brightness changes, causing the high-frequency components to disappear. occurs.

従って1本発明はレジストレーションの問題がなく、実
質的に高精細な情報を周波数を多重化して、高精細なテ
レビジョン信号を得る方式を実現することである。
Accordingly, one object of the present invention is to realize a system for obtaining a high-definition television signal by frequency multiplexing substantially high-definition information without the problem of registration.

[問題点を解決するための手段] 本発明は上記目的を達成するため、上記高精細な高周波
成分として、syX色の信号の1つを利用することによ
って、上記レジストレーションの問題を完全に解消して
いる。
[Means for Solving the Problems] In order to achieve the above object, the present invention completely solves the above registration problem by using one of the syX color signals as the high definition high frequency component. are doing.

[作用コ 3原色信号のそれぞれは、その高周波成分を保持してお
り、特にG成分は輝度信号の主要成分となり、実質的に
輝度信号と変らない高精細情報を持つものであり有効で
ある。
[Effects] Each of the three primary color signals retains its high frequency component, and in particular, the G component becomes the main component of the luminance signal and is effective because it has high-definition information that is substantially the same as the luminance signal.

[実施例] 以下、図面を用いて、本発明の実施例について説明する
[Examples] Examples of the present invention will be described below with reference to the drawings.

第1図は本発明を実施する場合に構成されるテレビジョ
ン信号発生部の一実施例の構成を示す。
FIG. 1 shows the configuration of an embodiment of a television signal generating section constructed when implementing the present invention.

テレビカメラの出力信号であるR、G、Bの各信号(こ
れらは高周波成分を含んでいる)は演算回路1によって
、輝度信号Yおよび色差信号C1゜C2,輝度信号Y、
および、色差信号C1,C2(例えばR−Y、B−Y、
あるいはI、Q)に変換される。そして、エンコーダ回
路2により、現行テレビジョン信号と同一の信号が作ら
れる。なお、エンコーダ回路2では、漏話軽減を図るた
め、水平のみならず、垂直、あるいは時間方向にも帯域
制限を行なうことが望ましい。以上の回路は一般によく
知られている回路と同じであるため詳細な説明は省く。
The R, G, and B signals (which contain high frequency components) that are the output signals of the television camera are processed by the arithmetic circuit 1 into a luminance signal Y, a color difference signal C1°C2, a luminance signal Y,
and color difference signals C1, C2 (for example, R-Y, B-Y,
or I, Q). Then, the encoder circuit 2 produces a signal identical to the current television signal. In the encoder circuit 2, in order to reduce crosstalk, it is desirable to limit the band not only horizontally but also vertically or in the time direction. Since the above circuit is the same as a generally well-known circuit, a detailed explanation will be omitted.

一方、G信号は、バイパスフィルタ3により、高周波成
分(GH)(4,2MHz以上)のみが抽出され、周波
数シフト回路4により、現行テレビジョン信号帯域(0
〜4 、2 M Hz)に低減変換された信号GH’ 
となる。
On the other hand, from the G signal, a bypass filter 3 extracts only high frequency components (GH) (4.2 MHz or higher), and a frequency shift circuit 4 extracts the current television signal band (0
~4,2 MHz) signal GH'
becomes.

そして、加算回路5で、信号GH’はエラーエンコーダ
2の出力と加算され、高精細テレビジョン信号となる。
Then, in the adder circuit 5, the signal GH' is added to the output of the error encoder 2, resulting in a high-definition television signal.

第2図に、周波数シフト回路4の一実施例を示す。同図
(a)は回路構成、(b)は周波数シフトの模様、(c
)は使用する搬送波μ。の位相関係を示す。
FIG. 2 shows one embodiment of the frequency shift circuit 4. In FIG. In the same figure, (a) shows the circuit configuration, (b) shows the frequency shift pattern, and (c)
) is the carrier wave μ to be used. shows the phase relationship of

G信号高周波成分GHは変調器6により、搬送波μ。(
周波数8.4MHz)で振幅変調され、ローパスフィル
タ7で、この下側帯波成分が抽出され、1.4〜4.2
MHz帯に周波数シフトされたGH’成分となる。
The G signal high frequency component GH is converted into a carrier wave μ by a modulator 6. (
The lower sideband component is extracted by the low-pass filter 7 and has a frequency of 1.4 to 4.2 MHz.
The GH' component is frequency shifted to the MHz band.

なお、搬送波μ。は、同図(c)に示す位相関係となる
ように、位相反転回路8で、走査線毎、フィールド毎に
位相反転などの制御を行なう。
Note that the carrier wave μ. The phase inversion circuit 8 performs control such as phase inversion for each scanning line and each field so that the phase relationship shown in FIG.

つぎに、第3図に、受像機側の高精細情報再生部の一実
施例を示す。高精細テレビジョン信号は、分離回路9に
より、輝度信号Y、色信号C1および高精細情報GH’
の成分に分離される。輝度信号Y、色信号Cはデコーダ
回路でもとの輝度信号Y、色差信号C1,C2に復調さ
れ、演算回路11により、R,G、B33原信号にもど
される。
Next, FIG. 3 shows an embodiment of a high-definition information reproducing section on the receiver side. The high-definition television signal is separated into a brightness signal Y, a color signal C1 and high-definition information GH' by a separation circuit 9.
It is separated into its components. The luminance signal Y and color signal C are demodulated into the original luminance signal Y and color difference signals C1 and C2 by the decoder circuit, and are returned to the R, G, and B33 original signals by the arithmetic circuit 11.

一方、GH’信号は、復調回路12で、第2図とは逆の
操作によって、もとの高周波成分GHに復調される。そ
して、加算回路13で高周波成分を含んだG信号が得ら
れる。
On the other hand, the GH' signal is demodulated into the original high frequency component GH in the demodulation circuit 12 by the operation reverse to that shown in FIG. Then, the adder circuit 13 obtains a G signal containing high frequency components.

なお、分離回路9では、高精細テレビジョン信号が静止
画、動画に対応して、動き適応処理を行ない、Y、C,
GH’間の漏話の少ない分離を行なうことが望ましい。
In addition, the separation circuit 9 performs motion adaptive processing on the high-definition television signal in response to still images and moving images.
It is desirable to provide isolation with less crosstalk between GH'.

なお、画質は少し劣化するが、現行のテレビジョン受像
器で直接受信できることは明らかである。
Although the image quality will be slightly degraded, it is clear that it can be directly received by current television receivers.

[発明の効果] 本発明によれば、カメラのレジストレーションがずれた
場合にも、解像度の高い画像を再生することが可能にな
り、高精細化に極めて有効である。
[Effects of the Invention] According to the present invention, it is possible to reproduce a high-resolution image even when the camera registration is misaligned, and is extremely effective in achieving high definition.

なお、実施例では、G信号高周波成分を高精細情報とし
て使用したが、R信号、あるいはB信号であってもよい
Note that in the embodiment, the high frequency component of the G signal is used as the high definition information, but the R signal or the B signal may also be used.

また、テレビジョン画像を複数ブロックに分割して、各
ブロック毎に信号処理パラメータを切換える、いわゆる
動き適応を行なう場合には、各ブロック毎に、R,G、
B信号のいずれかの高周波成分を高精細情報として選択
して使用することも可能である。そして、各ブロック毎
の高精細情報の種類を例えばモード情報として高精細テ
レビジョン信号に多重して伝送し、受像機側では、この
モード情報によって各ブロック毎にそれぞれ高精細情報
を再生することで、より高精細化を図ることも可能にな
る。
Furthermore, when performing so-called motion adaptation, in which a television image is divided into multiple blocks and signal processing parameters are switched for each block, R, G,
It is also possible to select and use any high frequency component of the B signal as high definition information. Then, the type of high-definition information for each block is multiplexed and transmitted as mode information on the high-definition television signal, and the receiver side reproduces the high-definition information for each block based on this mode information. , it is also possible to achieve higher definition.

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

第1図は、本発明を実施する場合の送信部の構成の一実
施例、第2図(a)、(b)および(Q)は、それぞれ
周波数シフト回路の1実施例の構成図、その説明のため
の周波数特性図および搬送波の位相関係を示す図、第3
図は、受像機側の高精細情報の再生の一実施例での構成
を示す図である。 1.11・・・演算回路、2・・・エンコーダ回路、3
・・・バイパスフィルタ、4・・・周波数シフト回路、
5゜13・・・加算回路、6・・・変調器、7・・・ロ
ーパスフィルタ、8・・・位相反転回路、9・・・分離
回路、12・・・復調回路。 第 1 口 茅 2 口 (C)
FIG. 1 shows an example of the configuration of a transmitting section when implementing the present invention, and FIGS. A diagram showing a frequency characteristic diagram and a phase relationship of carrier waves for explanation, Part 3
The figure is a diagram showing the configuration of an embodiment of high-definition information reproduction on the receiver side. 1.11... Arithmetic circuit, 2... Encoder circuit, 3
... Bypass filter, 4... Frequency shift circuit,
5゜13... Addition circuit, 6... Modulator, 7... Low pass filter, 8... Phase inversion circuit, 9... Separation circuit, 12... Demodulation circuit. 1st mouth 2nd mouth (C)

Claims (1)

【特許請求の範囲】 1、3原色信号のうちいずれか1つの信号の高周波成分
を分離し、上記高周波成分を周波数シフトにより低周波
信号に変換し、上記3原色信号で合成されたテレビジョ
ン信号に上記変換された低周波信号を周波数インタリー
ブによって周波数多重することによってテレビジョン信
号を得ることを特徴とするテレビジョン信号処理方式。 2、第1項記載のテレビジョン信号処理方式において、
上記3原色信号のうちのいずれか1つの信号は緑色の信
号であるテレビジョン信号処理方式。
[Claims] A television signal in which the high frequency component of any one of the first and third primary color signals is separated, the high frequency component is converted into a low frequency signal by frequency shifting, and the three primary color signals are combined. A television signal processing method characterized in that a television signal is obtained by frequency multiplexing the converted low frequency signal by frequency interleaving. 2. In the television signal processing method described in paragraph 1,
A television signal processing system in which any one of the three primary color signals is a green signal.
JP61251743A 1986-10-24 1986-10-24 Television signal processing system Expired - Lifetime JPH0828894B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61251743A JPH0828894B2 (en) 1986-10-24 1986-10-24 Television signal processing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61251743A JPH0828894B2 (en) 1986-10-24 1986-10-24 Television signal processing system

Publications (2)

Publication Number Publication Date
JPS63107289A true JPS63107289A (en) 1988-05-12
JPH0828894B2 JPH0828894B2 (en) 1996-03-21

Family

ID=17227269

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61251743A Expired - Lifetime JPH0828894B2 (en) 1986-10-24 1986-10-24 Television signal processing system

Country Status (1)

Country Link
JP (1) JPH0828894B2 (en)

Also Published As

Publication number Publication date
JPH0828894B2 (en) 1996-03-21

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