JPS60153683A - Television receiver - Google Patents

Television receiver

Info

Publication number
JPS60153683A
JPS60153683A JP59010435A JP1043584A JPS60153683A JP S60153683 A JPS60153683 A JP S60153683A JP 59010435 A JP59010435 A JP 59010435A JP 1043584 A JP1043584 A JP 1043584A JP S60153683 A JPS60153683 A JP S60153683A
Authority
JP
Japan
Prior art keywords
signal
circuit
horizontal
scanning
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.)
Pending
Application number
JP59010435A
Other languages
Japanese (ja)
Inventor
Susumu Tsujihara
辻原 進
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP59010435A priority Critical patent/JPS60153683A/en
Publication of JPS60153683A publication Critical patent/JPS60153683A/en
Pending legal-status Critical Current

Links

Landscapes

  • Television Systems (AREA)

Abstract

PURPOSE:To obtain high quality pictures by generating a false signal from an orginal signal between scanning lines in a signal convertor circuit and by adjusting picture quality only for an original signal of a scanning line. CONSTITUTION:A signal conversion circuit 4 generates a false signal from an original signal between scanning lines by a television signal of a standard system, converts the false signal into a television signal having two-fold horizontal scanning frequency, and image-amplifiers 5 it, thereby driving an image receiving tube 11. On the other hand, a synchronizing separator circuit 6 separates a synchronizing signal obtained in a demodulator circuit 3 into vertical and horizontal synchronizing signals. Then the vertical synchronizing signal is transmitted to a vertical deflecting circuit 7, and by an output of the circuit 7 a vertical deflecting coil of a deflection yoke 10 is driven. The horizontal synchronizing signal is transmitted to a phase synchronous loop circuit 8, which generates a clock signal of the circuit 4, and converts the horizontal synchronizing signal into that of two-fold frequency. The converted horizontal synchronizing signal is transmitted to a horizontal deflecting circuit 9, which drives a horizontal deflecting coil of a deflecting yoke 12.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、標準方式のテレビジョン信号を記憶素子を用
いてn倍の水平走査周波数を有する信号に変換して表示
するテレビジョ〉′受像機に関する。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a television receiver that converts a standard television signal into a signal having a horizontal scanning frequency n times higher using a storage element and displays the converted signal. .

従来例の構成とその問題点 ・現在の標準方式のテレビジョン方式に峠、NTSCP
AL 、 SgCAM等の方式があるが、いずれも、解
像城が必ずしも十分、なものとはいえない。特に画面の
大型化が要窒されている今日、放送の高解像度化が要求
されている。したがって、近い将来、走査線数が現在の
標準方式の2〜3倍程度で帯域「1]が6〜10倍程度
の高精細度放送が施行されると思われる。現に、NHK
からは走査線数1126本、輝度信号帯域中20 M 
uz、 ic I A (Eloc tronicIn
dustries As5ociatiO,n :米国
電子工業会)からは走査線数1023本、輝度信号帯域
中21.1M1lz、BBCからは走査線数1601本
、輝度信号帯域中soM)Izの各方式が提案されてい
る。これらの新しいテレビジョン方式の実用化の過渡期
においては、これらの方式の信号を受信する受像機で標
準方式のテレビジョン信号も受信できるよう、いわゆる
両立性を有するテレビジョン受像機を実現すれば普及が
より早くなると考えられる。
Conventional configuration and its problems - NTSCP has changed over the current standard television system
There are methods such as AL and SgCAM, but it cannot be said that the resolution of either of them is necessarily sufficient. Especially today, when it is important to use larger screens, higher resolution broadcasting is required. Therefore, in the near future, it is thought that high-definition broadcasting will be implemented in which the number of scanning lines is about 2 to 3 times that of the current standard system and the band "1" is about 6 to 10 times.
The number of scanning lines is 1126, and the luminance signal band is 20M.
uz, ic I A (Eloc tronicIn
The Electronic Industries Association has proposed a method with 1023 scanning lines and 21.1M1lz in the luminance signal band, and the BBC has proposed a method with 1601 scanning lines and soM)Iz in the luminance signal band. . In the transitional period of commercialization of these new television formats, it is important to create television receivers that are compatible, so that receivers that receive signals from these formats can also receive television signals from standard formats. It is thought that the spread will be faster.

また、近年の情報化時代において、コンピュータ端末と
して英数字や文字を表示するキャラクタディスプレイや
、図表、模様等を表示するグラフィックディスプレイの
需委が胃まっている。これらの機器において、情報量を
向上させる目的で解像度や走査線数を増加させて走査周
波数を標準のテレビジョン方式の2倍程興に設定したも
のが使用される様になってきた。これらのディスプレイ
装置によって標準方式のテレビジョン信号も受信できる
様に構成す、れば、VTRやカメラからの信号も受信で
きるので、ディスプレイ装置の応用範囲が広がり、その
実現が期待されている。
In addition, in the recent information age, there is a growing demand for character displays that display alphanumeric characters and characters, and graphic displays that display diagrams, patterns, etc. as computer terminals. In order to improve the amount of information, these devices have come to be used in which the resolution and number of scanning lines have been increased and the scanning frequency has been set to about twice that of the standard television system. If these display devices are constructed to be able to receive standard television signals, they can also receive signals from VTRs and cameras, which will expand the range of applications of the display devices, and is expected to be realized.

両立性を有するテレビジョン受像機を実現しようとする
場合には、信号回路は当然のことながら、偏向回路にお
いても、水平走査周波数の大きなちがいから標準方式と
新しい方式の両方式で回路を共用゛することが困難であ
り、切換え□スイッチ、す■ □ レー等を用いて回路を切換えて動作させる必要があった
。このため回路が複雑化するとともに、ポテンシャルの
高い部分を切換えるという点で信頼性の面でも問題があ
った。また従来、走査周波数が異なる方式間の変換装置
として使用されているものは、変換しようとする走査周
波数にちょうと一致させる様な変換の方法であったため
、走査線何本か毎に1本分の信号を欠落させたり、追加
させたりといった操作が必要であり、構成が非常に複雑
であった。
In order to realize a compatible television receiver, it is necessary to share circuits between the standard method and the new method, not only in the signal circuit but also in the deflection circuit, due to the large difference in horizontal scanning frequency. It was difficult to operate the circuit, and it was necessary to switch the circuit using a changeover switch, a switch, or the like. This not only made the circuit more complex, but also caused problems in terms of reliability since parts with high potential were switched. Furthermore, conventionally used conversion devices between systems with different scanning frequencies have a conversion method that exactly matches the scanning frequency to be converted, so one scan frequency is converted for every few scanning lines. This required operations such as dropping or adding signals, making the configuration extremely complex.

このため、標準方式のテレビジョン信号を前記□新り、
−ナレビジ・・方式の水平走査周波数の近傍、の水平走
査周波数を有する信号に変換して、表示する方式が特願
昭56−”+ 41.2.01 %で提案されている。
For this reason, the standard television signal was changed to
A method of converting signals into signals having a horizontal scanning frequency close to the horizontal scanning frequency of the KnowledgeVisi system and displaying the signal is proposed in Japanese Patent Application No. 1983-41.2.01.

しかしながら同出願のものでは、標準方式のテレビジョ
ン楠号を記憶素子を用いて1倍近傍め水平走査周波数を
有する信号に変換する際、復調回路3で画′質調整1さ
れた信号が、信号変換回路4に□ 供給され、走査線間
の原信号から擬似信号を作成しているωめ、擬似信号成
亦も画質調整軸1.た信号となるため、斜線画像及び動
きのある画像に対して、エツジ部に擬似信号の輪郭信−
ちにより画質の劣化が生じるという欠点があった。
However, in the same application, when converting a standard television number into a signal having a horizontal scanning frequency close to 1 times using a storage element, the signal whose image quality has been adjusted 1 in the demodulation circuit 3 is Since the pseudo signal is supplied to the conversion circuit 4 and is created from the original signal between the scanning lines, the pseudo signal formation is also controlled by the image quality adjustment axis 1. Therefore, for diagonal line images and moving images, a contour signal of a pseudo signal is applied to the edge part.
The disadvantage is that the image quality deteriorates over time.

発明の目的 そこで本発明は以上の点に鑑み、信号変換回路の演算処
理において各走査線の信号のみ画質調整を行い、走査線
間の原信号から擬似的に作られる擬似信号においては、
画質調整を行なわない様にすることにより、高解像度の
画質を有する画像を映出することができるテレビジョン
受像機を得ることを目的とするものである。
Purpose of the Invention In view of the above points, the present invention adjusts the image quality of only the signal of each scanning line in the arithmetic processing of the signal conversion circuit, and in the pseudo signal created from the original signal between the scanning lines,
The object of the present invention is to provide a television receiver that can display images with high resolution by not performing image quality adjustment.

発明の構成 本発明は、飛越走置方式のテレビジョン信号を受信する
手段と、この受信した信号を非飛越し倍走査方式の信号
に変換する信号変換手段とを設け、前記信号変換手段が
走査線間の原信号より擬似信号を作成するとともに前記
走査線の原信号だけに画質調整を行うように構成したテ
レビジョン受像機である。
Structure of the Invention The present invention includes means for receiving an interlaced scanning television signal, and signal converting means for converting the received signal into a non-interlaced double scanning type signal, and the signal converting means receives a scanning This television receiver is configured to create a pseudo signal from the original signal between lines and to perform image quality adjustment only on the original signal of the scanning line.

実施例の説明 以下、本発明の実施例について図面を・参照して詳細に
説明する。
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

第1図は、本発明の一実施的の受信機の全体構成を示す
ブロック図であり、第2図はその信号変換動作を説明す
るための波形図である。
FIG. 1 is a block diagram showing the overall configuration of a receiver according to an embodiment of the present invention, and FIG. 2 is a waveform diagram for explaining its signal conversion operation.

放送局から発射される電波はアンテナ1で受信され、テ
レビチューナ2で中間周波数に変換され増幅された後に
検波されて複合映像信号になる。
Radio waves emitted from a broadcasting station are received by an antenna 1, converted to an intermediate frequency by a television tuner 2, amplified, and then detected to become a composite video signal.

この複合映像信号は、復調回路3に供給され復調回路3
で3原色に対応した信号、たとえばRlG、B信号、あ
るいはY、I、Q信号に復調され、信号変換回路4では
、第2図aに示す標準方式のテレビジョン信号から走査
線間の原信号より擬似的に擬似信号を作成すると共に各
走査線の原信号のみ画質調整を行い、擬似信号において
は画質調整を行わず2倍の水平走査周波数を有する第2
図すのようなテレビジョン信号に信号変換され7、映像
増幅回路6に供給される。そして映像増幅回路6で増幅
されて受像管11を駆動する。
This composite video signal is supplied to the demodulation circuit 3.
is demodulated into signals corresponding to the three primary colors, such as RlG, B signals, or Y, I, Q signals, and the signal conversion circuit 4 converts the original signal between the scanning lines from the standard television signal shown in FIG. 2a. In addition to creating a more pseudo signal, the image quality is adjusted only for the original signal of each scanning line, and the image quality of the pseudo signal is not adjusted and a second signal having twice the horizontal scanning frequency is used.
The signal is converted into a television signal 7 as shown in the figure, and is supplied to a video amplification circuit 6. The signal is then amplified by the video amplification circuit 6 and drives the picture tube 11.

次に同期分離回路6は、復調1可路3で得らil−た同
期信号から水平同期信号と垂直同期信号とを分離する。
Next, the synchronization separation circuit 6 separates the horizontal synchronization signal and the vertical synchronization signal from the synchronization signal obtained by the demodulation circuit 3.

垂直同期信号は垂直同期信号7へ供給され、垂直偏向回
路7により偏向ヨーク10の垂直偏向コイルが駆動され
る。水平同期□信号はPLL回路(位相同期ループ)8
へ供給される。PLL回路8は信号変換回路4のクロッ
ク信号を発生すると共に、前記水平同期信号を2倍の周
波数の水平同期信号に走査周波数変換する。シ倍の周波
数に変換された水平同期信号は、水平偏向回路9に供給
され、水平偏向回路9により偏向ヨーク12の水平偏向
コイルが駆動される。
The vertical synchronization signal is supplied to the vertical synchronization signal 7, and the vertical deflection coil of the deflection yoke 10 is driven by the vertical deflection circuit 7. Horizontal synchronization □ signal is PLL circuit (phase locked loop) 8
supplied to The PLL circuit 8 generates a clock signal for the signal conversion circuit 4, and also performs scanning frequency conversion of the horizontal synchronization signal into a horizontal synchronization signal having twice the frequency. The horizontal synchronizing signal converted to the multiplied frequency is supplied to the horizontal deflection circuit 9, and the horizontal deflection circuit 9 drives the horizontal deflection coil of the deflection yoke 12.

以上の様に標準方式のテレビジョン信号は信号変換及び
走査周波数変換されて表示される。
As described above, the standard television signal is displayed after signal conversion and scanning frequency conversion.

次に本発明の特徴とする信号変換回路4について第3図
のブロック図を用いて詳細に説明する。
Next, the signal conversion circuit 4, which is a feature of the present invention, will be explained in detail using the block diagram shown in FIG.

第3図の入力端子14には、第1図復調回路2から得ら
れる信号が供給され、切換スイツチ16を通して一水平
期間の信号を記憶する2つの1Hメモリ1e 、 17
に供給される。
The input terminal 14 in FIG. 3 is supplied with the signal obtained from the demodulation circuit 2 in FIG.
supplied to

PLL回路8からの書き込み、読み出しを行うタイミン
グのクロックパルスは、1Hメモリ16゜17ff:駆
動して信号変換される。
The clock pulse at the timing for writing and reading from the PLL circuit 8 drives the 1H memory 16°17ff: and is converted into a signal.

この1Hメモリ16.ITの出力は切換スイッチ18を
通してH/2遅延回路19に供給されH/2(Hに標準
方式の一水平期間)の時間だけ遅延される。
This 1H memory 16. The output of IT is supplied to the H/2 delay circuit 19 through the changeover switch 18 and is delayed by a time of H/2 (H is one horizontal period of the standard method).

切換スイッチ15.18は標準方式の水平同期信号に同
期して開閉される。
The changeover switches 15 and 18 are opened and closed in synchronization with a standard horizontal synchronization signal.

1Hメモリ16.17から信号変換出力と1H/2遅延
回路19で遅延された信号変換出力とは、加算回路20
で加算されて、走査線間の原信号よシ擬似的な擬似信号
が作成され、利得制御回路21で振幅を制御して切換ス
イッチ22に供給される。H/2遅延回路19の各走査
線の原信号は画質調整回路24に供給され、画質調整き
れて、切換スイッチ22に供給される。切換スイッチ2
2は画質調整回路24からの画質調整された各走査線の
原信号と、利得制御回路21からの走査線間の原信号よ
シ作成した擬似信号とを信号変換された水平同期信号に
同期して開閉されて信号変換出力が出力される。
The signal conversion output from the 1H memory 16.17 and the signal conversion output delayed by the 1H/2 delay circuit 19 are connected to the adder circuit 20.
A pseudo signal that is similar to the original signal between the scanning lines is created, the amplitude of which is controlled by the gain control circuit 21, and the signal is supplied to the changeover switch 22. The original signal of each scanning line of the H/2 delay circuit 19 is supplied to an image quality adjustment circuit 24, the image quality has been adjusted, and the signal is supplied to the changeover switch 22. Changeover switch 2
2 synchronizes the original signal of each scanning line whose image quality has been adjusted from the image quality adjustment circuit 24 and the pseudo signal created from the original signal between the scanning lines from the gain control circuit 21 with the converted horizontal synchronizing signal. It is opened and closed to output a signal conversion output.

次に第3図の動作について、第4図の波形図を用いて詳
細に説明する。
Next, the operation shown in FIG. 3 will be explained in detail using the waveform diagram shown in FIG. 4.

第4図亀は第1図の復調回路2から得られる標準方式の
テレビジョン信号であり、切換スイツチ16を通して、
1HメモIJ 16 、17に供給される。1Hメモリ
16.17の、書き込み、読み出し動作は第4図す、O
に示す様に、一方が書き込み動作の時は他方の着、み出
し動作になる様に、切換スイップー16は設定され、標
準方式のテレビ23713号の一水平走査期間毎にその
動作が反転される。SlI外込まれた信号Vよ次の一水
平走査期間に書き込1れた時の2倍の速度で読み出され
る。たとえば、書き込み用クロックは1a、32MHz
 、読み出し月1クロククは28.62 M llzと
する。
The tortoise in FIG. 4 is a standard television signal obtained from the demodulation circuit 2 in FIG.
1H memo IJ 16, 17. The writing and reading operations of the 1H memory 16 and 17 are shown in Figure 4.
As shown in the figure, the switching switch 16 is set so that when one side is in writing operation, the other side is in loading and unloading operation, and the operation is reversed every horizontal scanning period of standard TV No. 23713. . The signal V input from SlI is read out at twice the speed of writing in the next horizontal scanning period. For example, the write clock is 1a, 32MHz
, one clock per month of reading is 28.62 Mllz.

第4図すに動作を示す1Hメモリ16からは、dの信号
が読み出でれる。第4図Cに動作を示す1Hメモリ17
からは、eの信号が爺、み出される。
A signal d can be read out from the 1H memory 16, the operation of which is shown in FIG. 1H memory 17 whose operation is shown in FIG. 4C
The signal e is extracted from the .

1Hメモリ16,1了からの出力は切換スイッチ18に
供給され、読み出し期間の信号・のみ抽出する様に開閉
され、fに示す信号変換出力が得られる。この信号はH
/2遅延回路19に供給されて、gに示す様に、標準方
式の一水平期間の2分の1(H−)だけ遅延される。次
に走査線間の原信号より擬似的は擬似信号を作成するた
め、第4図gに示すH/2遅延回路19からの信号と、
rに示す切換スイッチ18からの信号とが加算回路20
で加算され、その信号が利得制御回路21で2分の1に
利得制、御されて、走査線間の原信号より擬似的な擬似
信号が演舞、処理され切叫スイッチ22の入力■に供給
される。 □ またH/2遅婢回路19からの信号は、両++7j調整
回路24に供給され、hに示す様に各走itiの原信号
のみ画質調整され、切換スイッチ22の入力■に供給さ
れる。切換スイッチ22に供給された画質調整回路24
からの画質調整された各走+線の原信号と、利得制御回
路21からの走査線間データより作成した擬似信号と金
、信号変換された水マド同期信号に同期して開閉させて
第4図1に示す様な、信号変換出力信号が出力端子23
に供給される。
The output from the 1H memory 16, 1H memory 16 is supplied to the changeover switch 18, which is opened and closed so as to extract only the signal during the read period, and the signal conversion output shown in f is obtained. This signal is H
The signal is supplied to the /2 delay circuit 19 and is delayed by one-half (H-) of one horizontal period of the standard method, as shown in g. Next, in order to create a pseudo signal from the original signal between the scanning lines, the signal from the H/2 delay circuit 19 shown in FIG.
The signal from the selector switch 18 shown in r is added to the adder circuit 20.
The signal is gain-controlled and controlled to 1/2 by the gain control circuit 21, and a pseudo signal that is more pseudo than the original signal between the scanning lines is played, processed, and supplied to the input of the scream switch 22. be done. □ Also, the signal from the H/2 delay circuit 19 is supplied to the both ++7j adjustment circuit 24, and only the original signal of each run iti is subjected to image quality adjustment as shown in h, and is supplied to the input 2 of the changeover switch 22. Image quality adjustment circuit 24 supplied to the changeover switch 22
The original signal of each scanning line whose image quality has been adjusted from As shown in Figure 1, the signal conversion output signal is output to the output terminal 23.
supplied to

出力端子23からの信号変換出力信号は、第1図の映像
増幅回路6に供給される。映像増幅回路6で増幅されて
受像管11を駆動して画面−Lに信号変換された信号が
映出される。
The signal conversion output signal from the output terminal 23 is supplied to the video amplification circuit 6 shown in FIG. The converted signal is amplified by the video amplification circuit 6, drives the picture tube 11, and is displayed on the screen -L.

次にインタレース関係について第6図に画面上の走査線
の様子を示して説明する。
Next, the interlace relationship will be explained with reference to FIG. 6, which shows the state of scanning lines on the screen.

図中に記した数字は走査線の番号を示しており、第1フ
イールドと第2フイールドの走査線はそれぞれ実線と破
線で示している。まぞ図中に(イ)、(ロ)(ハ)・・
・・・・・・・で示した記号は、第6図aに示す信号変
換前の標準方式のテレビジョン信号の各走査線に対する
信号をあられしたものであり、第1フイールドと第2フ
イールドは記号「゛」ヲつけて区別している。信号変換
後は、走査線数が1060本となシ、偶数であるため飛
越走査が行なわれず第6図すに示す様に、第1フイール
ドの信号と第2フイールドの信号が重なる。
The numbers written in the figure indicate the numbers of the scanning lines, and the scanning lines of the first field and the second field are indicated by solid lines and broken lines, respectively. In the map (a), (b), (c)...
The symbols shown in . . . are the signals for each scanning line of the standard format television signal before signal conversion shown in Figure 6a, and the first and second fields are They are distinguished by the symbol "゛". After signal conversion, the number of scanning lines is 1060, which is an even number, so interlaced scanning is not performed and the signals of the first field and the second field overlap as shown in FIG.

したがって、走査線の粗さがなくラインフリッカ−が少
ない626本ノンインタレース状態トなる。
Therefore, 626 lines are non-interlaced with no roughness in the scanning lines and less line flicker.

より詳細に説明するため第6図、第7図の走査線の配列
及び波形図を用いる。
For more detailed explanation, the scanning line arrangement and waveform diagrams of FIGS. 6 and 7 will be used.

第6図aに標準方式のテレビジョン信号の斜線画像を受
信した場合を示す。また上側に画面走査線上の明るさを
示し、下側はその走査線の信号を示す。そのうち右斜線
部は第1フイールドにおける黒い部分を示し、左斜線部
は第2フイールドにおける黒部分を示している。また間
隔の広い斜線は走査線間の原信号から擬似的に作成され
た擬似信号の箇所を示している。また画質調整された水
平方向エツジ部は、太い線(黒方向)および二本線(白
い方向)で示す。
FIG. 6a shows a case where a diagonal line image of a standard television signal is received. The upper side shows the brightness on the screen scanning line, and the lower side shows the signal of that scanning line. The hatched area on the right indicates the black area in the first field, and the area shaded on the left indicates the black area in the second field. Also, diagonal lines with wide intervals indicate locations of pseudo signals created from the original signals between scanning lines. Further, the horizontal edge portions whose image quality has been adjusted are indicated by a thick line (in the black direction) and two lines (in the white direction).

図のように画面に斜線を表示する場合、第6図aに示す
様に標迩方式のテレビジョン信号では斜線画像に現われ
るエツジ部の画質の劣化はないがラインフリッカ−が生
じる。これに対して第6図すは、走査線間の原信号から
擬似的に擬似信号を作成する様に演算処理した信号変換
出力を受信した時、すなわち526本ノンインタレース
受信時を示す。第6図すに示す様に、同じデータを2回
読み出す様に演算処理した信号変換に比べ走査線位置と
信号のずれによる斜線画像の画質の劣化部分がすべて平
均化されて大幅に改善されている。
When diagonal lines are displayed on the screen as shown in the figure, line flicker occurs although there is no deterioration in the image quality of the edge portions that appear in the diagonal line image in the case of a television signal based on the subway system, as shown in FIG. 6a. On the other hand, FIG. 6 shows the case when a signal conversion output which has been subjected to arithmetic processing to create a pseudo signal from the original signal between scanning lines is received, that is, when 526 lines are received in a non-interlaced manner. As shown in Figure 6, compared to signal conversion that performs arithmetic processing such that the same data is read out twice, the image quality degradation of the diagonal image due to the shift in the scanning line position and signal is all averaged out, resulting in a significant improvement. There is.

しかし、走査線間の原信号から擬似的に作成された擬似
信号にも画質調整がかかっているため、擬似信号のエツ
ジ部が各走査線の原信号に影響を与えて、画質の劣化が
生じる。
However, since image quality adjustment is also applied to the pseudo signal created from the original signal between scanning lines, the edges of the pseudo signal affect the original signal of each scanning line, resulting in deterioration of image quality. .

しかし本発明によれば、前記各走査線の原信号のみ画J
h調整を行い、演算処理して作成される擬似信号に関し
ては、画質調整を行なっていないため、第6図Cに示す
様に各走査線の原信号の鮮鋭度が向上すると共に、擬似
信号のエツジ部による画質の劣化なく大幅に改善されて
いる。
However, according to the present invention, only the original signal of each scanning line can be imaged J.
Since no image quality adjustment is performed on the pseudo signals created by h adjustment and arithmetic processing, the sharpness of the original signal of each scanning line is improved as shown in Figure 6C, and the pseudo signals are The image quality has been significantly improved without any deterioration due to the edges.

第7図aに標準方式のテレビジョン信号の動画の斜線画
像を受信した場合を示す。
FIG. 7a shows a case where a diagonal line image of a moving image of a standard television signal is received.

第7図すは、第6図すと同じ演算処理を行なったもので
、相関の低い動画に関してはラインフl] ツカ−は取
れず、擬似信号のエツジ部が二重画像をより強調し、画
質の劣化が生じる。
Figure 7 is a result of the same arithmetic processing as in Figure 6, and for videos with low correlation, the lineflash cannot be removed, and the edges of the pseudo signal emphasize the double image, resulting in poor image quality. Deterioration occurs.

第6図Cと同様に第7図Cにおいても、本発明により各
走査線の原信号の鮮鋭度が向上すると共に、擬似信号の
エツジ部が動画の二1画像を強調されないため、大幅に
改善されている。
Similarly to FIG. 6C, in FIG. 7C, the sharpness of the original signal of each scanning line is improved by the present invention, and the edges of the pseudo signal are not emphasized in the 21st image of the moving image, resulting in a significant improvement. has been done.

したがってラインフリッカ−が少なく、斜線画像及び動
画の時の画質の劣化が生じず、高品質の画像を得ること
ができる。
Therefore, there is little line flicker, and there is no deterioration in the image quality of diagonal line images or moving images, making it possible to obtain high-quality images.

以上、飛越走置方式の標準方式のテレビジョン信号につ
いて述べてきたが、順次走置方式のキャラクタ信号等の
場合、比較的相関の低い成分で、あるため、前記演算処
理の信号変換より、同じデータを2回読み出す演算処理
の信号変換の方が画質の鮮鋭度が低下することがない。
So far, we have described the standard television signal of the interlaced positioning system, but in the case of a character signal of the sequential positioning system, the components have a relatively low correlation. Signal conversion using arithmetic processing in which data is read twice is less likely to reduce the sharpness of image quality.

また走査線が2倍で配列されるため、非常に見やすいキ
ャラクタ信号が画面上に映出される。
Furthermore, since the scanning lines are arranged at twice the size, character signals that are very easy to see are displayed on the screen.

この時、画質調整は各走査線の原信、号すなわちすべて
の信号変換された走査線の信号において行なわれるのは
言うまでもない。またその時の構成においては、第3図
の切換スイッチを入力■側に接続しておけば、簡単に構
成できる。
At this time, it goes without saying that the image quality adjustment is performed on the original signal of each scanning line, that is, on the signals of all converted scanning lines. Further, the configuration at that time can be easily configured by connecting the changeover switch shown in FIG. 3 to the input (2) side.

発明の効果 以上述べた様に、本発明によれば、ラインフリッカが少
なく斜線画像及び動作に対しての画質の劣化が生じず、
高品質の画像を得ることができる。
Effects of the Invention As described above, according to the present invention, there is little line flicker, and there is no deterioration in image quality for diagonal line images and motion.
High quality images can be obtained.

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

第1図は本発明の一実施例+fcおけるテレビジョン受
像機の構成を示すブロック図、第2図は同実施例の動作
を説明するためΩ波形図、第3図は同実施例における信
号変換回路の具体例を示すブロック図、第4図はその動
作を説明するための波形図、第6図はその画面上の走査
線の様子を示す模式図、第6図および第7図は本発明の
詳細な説明するための説明図である。 3・・・・・・復調回路、4・・・・・・信号変換回路
、6・・・・・・ ゛同期分離回路、7・・・・・・非
直偏向回路、8・・・・・・PLL回路、9・・・・・
−水平偏向回路、24・・・・・・画質調整回路。 代理人の氏名 弁理士 中 尾 敏、男 ほか1名菓 
1 図 第2図 図 と− 第4図 第5図 (リ Cb)
Fig. 1 is a block diagram showing the configuration of a television receiver in an embodiment of the present invention + fc, Fig. 2 is an Ω waveform diagram to explain the operation of the embodiment, and Fig. 3 is a signal conversion in the embodiment. A block diagram showing a specific example of the circuit, FIG. 4 is a waveform diagram to explain its operation, FIG. 6 is a schematic diagram showing the state of scanning lines on the screen, and FIGS. 6 and 7 are diagrams of the present invention. FIG. 2 is an explanatory diagram for explaining in detail. 3... Demodulation circuit, 4... Signal conversion circuit, 6... ゛Synchronization separation circuit, 7... Non-direction deflection circuit, 8...・・PLL circuit, 9・・・・
-Horizontal deflection circuit, 24... Image quality adjustment circuit. Name of agent: Patent attorney Satoshi Nakao, male and 1 other name
1 Figure 2 and - Figure 4 Figure 5 (Re Cb)

Claims (1)

【特許請求の範囲】[Claims] 飛越走査方式のテレビジョン信号を受信する手段と、こ
の受信した信号を非飛越し倍走査方式の信号に変換する
信号変換手段とを設け、前記信号変換手段が走査線間の
原信号より擬似信号を作成するとともに前記走査線の原
信号だけに画質調整を行うことを特徴とするテレビジョ
ン受像機。
A means for receiving an interlaced scanning television signal and a signal converting means for converting the received signal into a non-interlaced double scanning signal are provided, and the signal converting means converts the original signal between scanning lines into a pseudo signal. A television receiver characterized in that the image quality is adjusted only to the original signal of the scanning line.
JP59010435A 1984-01-24 1984-01-24 Television receiver Pending JPS60153683A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59010435A JPS60153683A (en) 1984-01-24 1984-01-24 Television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59010435A JPS60153683A (en) 1984-01-24 1984-01-24 Television receiver

Publications (1)

Publication Number Publication Date
JPS60153683A true JPS60153683A (en) 1985-08-13

Family

ID=11750079

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59010435A Pending JPS60153683A (en) 1984-01-24 1984-01-24 Television receiver

Country Status (1)

Country Link
JP (1) JPS60153683A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02250481A (en) * 1989-03-24 1990-10-08 Nec Corp Scan converter circuit
JP2007267242A (en) * 2006-03-29 2007-10-11 Sanyo Electric Co Ltd Video signal processing circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02250481A (en) * 1989-03-24 1990-10-08 Nec Corp Scan converter circuit
JP2007267242A (en) * 2006-03-29 2007-10-11 Sanyo Electric Co Ltd Video signal processing circuit

Similar Documents

Publication Publication Date Title
US4364090A (en) Method for a compatible increase in resolution in television systems
US5838381A (en) Image display apparatus capable of displaying personal computer signals and television signal by conversion into a signal of a higher number of pixels
JPS63207284A (en) Picture-in-picture video signal generator
JPH0372796A (en) Television signal processing unit
JP3847826B2 (en) Subtitle data display control device
JP4355820B2 (en) Image processing apparatus, image processing method, and television receiver
JPS60153683A (en) Television receiver
JPH02305190A (en) Television receiver
JPS5879390A (en) Television transmission and reception system
JPS60153276A (en) Television receiver
JPH09247574A (en) Scanning line converter
JP2850964B2 (en) Picture-in-picture circuit
JP2525431B2 (en) RGB multi-terminal input type progressive scan conversion television receiver
JPS58218275A (en) Television receiver
JPH0385976A (en) Television system converter
JP3681465B2 (en) Prompter video signal processor
JPS6028385A (en) Television receiver
KR0148187B1 (en) Double screen and pip circuit
JPS58201467A (en) Television receiver
JPS6317272B2 (en)
JP2563606B2 (en) Double-screen dual-screen TV
JP3096675U (en) Teletext receiver
JPH06189274A (en) Method and device for converting frequency
JPS6367093A (en) Magnetic recording and reproducing device
JPS5821976A (en) Television receiver