JPH04127680A - Television receiver - Google Patents
Television receiverInfo
- Publication number
- JPH04127680A JPH04127680A JP24948390A JP24948390A JPH04127680A JP H04127680 A JPH04127680 A JP H04127680A JP 24948390 A JP24948390 A JP 24948390A JP 24948390 A JP24948390 A JP 24948390A JP H04127680 A JPH04127680 A JP H04127680A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- receiving
- ntsc
- circuit
- hdtv
- 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
Links
- 238000010894 electron beam technology Methods 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- LFVLUOAHQIVABZ-UHFFFAOYSA-N Iodofenphos Chemical compound COP(=S)(OC)OC1=CC(Cl)=C(I)C=C1Cl LFVLUOAHQIVABZ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229940028444 muse Drugs 0.000 description 1
- GMVPRGQOIOIIMI-DWKJAMRDSA-N prostaglandin E1 Chemical compound CCCCC[C@H](O)\C=C\[C@H]1[C@H](O)CC(=O)[C@@H]1CCCCCCC(O)=O GMVPRGQOIOIIMI-DWKJAMRDSA-N 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Picture Signal Circuits (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明はテレビジョン方式の興なる２つの信号を受信で
きるテレビジョン受像機にｔｉする。DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention is directed to a television receiver capable of receiving two signals of the television system.
（ロ）従来の技術
従来のＮＴＳＣ方式によるテレビジョン受像機において
は、特公昭６３−９９２号公報に示す如く速度変調回路
で速度変調コイルを制御することにより輪郭強調を行な
う方法がある。(B) Prior Art In conventional television receivers based on the NTSC system, there is a method of enhancing contours by controlling a speed modulation coil using a speed modulation circuit, as disclosed in Japanese Patent Publication No. 63-992.
この方法によれば、ＮＴＳＣ方式の信号に対しては画像
の輪郭が強調され鮮明度が上がり画質が向上する。According to this method, for NTSC signals, the outline of the image is emphasized, the clarity is increased, and the image quality is improved.
一方、近年ＮＴＳＣ方式に比べて約５倍の情報量を有し
ワイドアスペクト比（１６： ９）のハイビジョン方式
による信号（以下ＨＤＴＶ信号という）を受信するテレ
ビジョン受像機が開発されつつある。On the other hand, in recent years, television receivers have been developed that can receive high-definition signals (hereinafter referred to as HDTV signals) with a wide aspect ratio (16:9) and approximately five times the amount of information as compared to the NTSC system.
従来、この種、受像機はＮＴＳＣ信号とＨＤＴＶ信号の
両方を受信可能としており、例えば第２図の様な構成と
なっていた。即ち、ＮＴＳＣ信号受信時には切換信号に
よりスイッチ（１）が上側に倒れ、ＮＴＳＣ信号がプラ
イト調整、コントラスト調整等のビデオ信号処理回路（
２）へ供給され、ＮＴＳＣ処理が為された後、ＨＤＴＶ
用のＣＲＴ（４ンへ供給される。そして、前記ＮＴＳＣ
信号のうち輝度信号が速度変調回路（３）へ供給され遼
度変真信号が作成されて速度変調コイル（５）へ供給さ
れ、輪郭強調が為される。Conventionally, this type of receiver has been capable of receiving both NTSC signals and HDTV signals, and has a configuration as shown in FIG. 2, for example. That is, when an NTSC signal is received, the switch (1) is tilted upward by the switching signal, and the NTSC signal is sent to the video signal processing circuit (for brightness adjustment, contrast adjustment, etc.).
2) and after NTSC processing, HDTV
CRT (4 screens) for the NTSC
Among the signals, the luminance signal is supplied to the velocity modulation circuit (3), a liaison change true signal is created, and the signal is supplied to the velocity modulation coil (5) for contour enhancement.
一方、ＨＤＴ〜′信号受信時には、スイフチ（１）は下
側に則れ、ＨＤＴＶ信号がビデオ信号処理回路（２）を
通ってＣＲＴ（４）へ供給される。そして、輝度信号は
前述と同様に速度変調回路（３）へ供給され輪郭強調が
為される。On the other hand, when receiving the HDT~' signal, the switch (1) is shifted downward and the HDTV signal is supplied to the CRT (4) through the video signal processing circuit (2). Then, the luminance signal is supplied to the speed modulation circuit (3) in the same manner as described above, and the contour is emphasized.
（ハ）発明が解決しようとする課題
しかしながら、ＨＤＴＶ信号はベースバンドで約３０
ＭＨｚ、 ＮｉＵ Ｓ Ｅデコーダを通しタモノーｆ、
Ｇ約２０Ｍ）Ｉｚの帯域を有し元来画像が非常に鮮明
であるため、二の鮮明な画像に速度変調を施すと。(c) Problems to be solved by the invention However, HDTV signals have a baseband frequency of approximately 30
MHz, Tamono f through the NiU S E decoder,
Since the image has a band of approximately 20 M) Iz and is originally very clear, if velocity modulation is applied to the second clear image.
速度変調による像歪みがよく目立つようになり画質がか
えって悪化するという欠点があった。The disadvantage is that image distortion due to speed modulation becomes more noticeable and the image quality deteriorates.
本発明は上述の点に鑑み為されたものであり、Ｎ Ｔ
Ｓ Ｃ信号受信時には良好に鮮明度が向上し、且つＨＤ
ＴＶ信号受信時には速度変調による画質劣化を招くこと
のないテレビジョン受像機を提供するものである。The present invention has been made in view of the above points, and N T
When receiving SC signals, the clarity is improved and HD
To provide a television receiver that does not cause image quality deterioration due to speed modulation when receiving TV signals.
（ニ）課題を解決するための手段
本発明は、標準テレビジョン方式による第１の信号とこ
の第１の信号より精細度の高い第２の信号を切換えて受
信すると共に、電子ビームの走査速度を変化させて輪郭
強調を行なう速度変調手段を有するテレビジョン受像機
において、前記第１の信号受信時には前記速度変調手段
により輪郭強調された画像を映出すると共に、前記第２
の信号受信時には前記速度変調手段の動作を停止口でな
るテレビジョン受像機である。(d) Means for Solving the Problems The present invention switches and receives a first signal according to the standard television system and a second signal with higher definition than this first signal, and also has a scanning speed of an electron beam. In the television receiver, the television receiver includes a speed modulation means for performing edge enhancement by changing the speed, when the first signal is received, an image whose outline is emphasized by the speed modulation means is displayed, and the second
The television receiver is configured to stop the operation of the speed modulation means when receiving the signal.
（ホ）作 用
上述の手段により第１の信号受信時には前記速度変調手
段により輪郭強調された画像を映出すると共に、第２の
信号受信時には前記速度変調手段により輪郭強調されな
い画像を映出する。(e) Operation: By the means described above, when receiving the first signal, an image whose outline has been emphasized by the speed modulation means is displayed, and when a second signal is received, an image whose outline has not been emphasized by the speed modulation means is displayed. .
（へ）実施例 以下、図面に従い本発明の一実施例を説明する。(f) Example An embodiment of the present invention will be described below with reference to the drawings.
第１図は本実施例におけるテレビジョン受像機のブロッ
ク図を示し、第２図と同一部分には同一符号を付し説明
を省略する。FIG. 1 shows a block diagram of a television receiver according to this embodiment, and the same parts as in FIG. 2 are designated by the same reference numerals and their explanation will be omitted.
図中、（６）はＨＤＴＶベースバンドＶＴＲ等の出力で
ある外部ＨＤ Ｔ Ｖ信号と、ＭＵＳＥデコーダ（図示
省略）からのＨＤＴＶ信号とを切換信号■により切換え
る第１切換回路で、両ｆ（ＤＴ〜′信号はいずれも輝度
信号）′、色差信号ＰＲ，ＰＲの形式で入力される。（
７）はこの第１切換回路（６）出力のうち輝度信号Ｙが
入力される輪郭補正回路で、ビームアパチャー特性を改
善するために原信号の二次微分信号を作り出し、原信号
に重畳することにより輪郭を補正するものである。（８
）はこの輪郭補正回路出力及び前記第１切換回路からの
色差信号Ｐ８、Ｐｌを入力して原色信号Ｒ，Ｇ、Ｈに復
調する第１マトリクス回路である。In the figure, (6) is a first switching circuit that switches between an external HD TV signal, which is the output of an HDTV baseband VTR, etc., and an HDTV signal from a MUSE decoder (not shown), using a switching signal ■. ~' signals are all input in the form of a luminance signal)' and color difference signals PR, PR. (
7) is a contour correction circuit to which the luminance signal Y of the output of the first switching circuit (6) is input, which generates a second-order differential signal of the original signal and superimposes it on the original signal in order to improve the beam aperture characteristics. This corrects the contour. (8
) is a first matrix circuit which receives the output of this contour correction circuit and the color difference signals P8 and Pl from the first switching circuit and demodulates them into primary color signals R, G, and H.
（９）はＮＴＳＣ信号のｙ、ｐ、、ＰＲを原色信号Ｒ，
Ｇ、Ｈに復調する第２マトリクス回路、（１０）は切換
信号■によりＮＴＳＣ信号受信時とＨＤＴＶ信号受信時
とで原色信号を切換でビデオ信号処理回路（２）へ供給
すると共に、ＮＴＳＣ信号受信時の″＾輝度信号Ｙを選
択して速度変調回路（３）へ供・給する第２切換回路で
ある。(9) converts the NTSC signal y, p, , PR into the primary color signal R,
A second matrix circuit (10) that demodulates G and H signals switches the primary color signal to the video signal processing circuit (2) when receiving an NTSC signal and when receiving an HDTV signal, and also receives the NTSC signal. This is a second switching circuit that selects the brightness signal Y at the time and supplies it to the speed modulation circuit (3).
尚、本実施例におけるＮＴＳＣ信号は、動き適応型ＹＣ
分離及び動き適応型走査線補間等の処理が為されたＨＤ
ＴＶ信号となっている。Note that the NTSC signal in this embodiment is a motion adaptive YC signal.
HD that has undergone processing such as separation and motion adaptive scanning line interpolation
It is a TV signal.
次に、上述の回路の動作について説明する。Next, the operation of the above circuit will be explained.
まず、ＮＴＳＣ信号受信時は切換信号Ｏにより第２切換
回路（１０）の各スイフチは上側に倒されるため、第２
マトリクス回路（９）からのＮＴＳＣ原色信号Ｒ，Ｇ、
Ｂが選択されてビデオ信号処理回路（２）へ供給される
と共に、ＮＴＳＣ輝度信号Ｙが選択されて速度変調回路
（３）へ供給される。First, when receiving an NTSC signal, each switch of the second switching circuit (10) is tilted upward by the switching signal O.
NTSC primary color signals R, G from matrix circuit (9),
B is selected and supplied to the video signal processing circuit (2), and the NTSC luminance signal Y is selected and supplied to the speed modulation circuit (3).
そして、速度変調回路（３）では速度変調信号が作成さ
れ、従来同様、速度変調コイル（５）を制御して速度変
調によ・る輪郭強調を行なう。Then, a speed modulation signal is created in the speed modulation circuit (3), and as in the conventional case, the speed modulation coil (5) is controlled to perform contour enhancement by speed modulation.
一方、ＨＤＴ・■信号受信時には、第２切換回路（１０
）の各スイッチは下側に倒されるため、第１マトリクス
回路（８）からのＨＤＴ〜′原色信号Ｒ１Ｇ、Ｂが選択
されてビデオ信号処理回路（２）へ供給されるが、前記
速度変調回路の入力はアースに接続されるため前記速度
変調コイル（５）には何ら電流は流れない。On the other hand, when receiving the HDT・■ signal, the second switching circuit (10
) are turned down, the HDT~' primary color signals R1G and B from the first matrix circuit (8) are selected and supplied to the video signal processing circuit (2), but the speed modulation circuit Since the input of the coil (5) is connected to ground, no current flows through the speed modulation coil (5).
また、このとき、第１切換回路（６）は切換信号■によ
りＶＴＲ等からの外部ＨＤＴＶ信号若しくは内蔵Ｍ Ｕ
Ｓ Ｅデコーダからの信号のいずれかを選択して出力
する。そして、ＨＤＴＶ輝度信輝度信号部補正回路（７
）で若干輪郭補正が為されて前記第１７トリクス回路（
８）へ供給される。Also, at this time, the first switching circuit (6) uses the switching signal ■ to switch between an external HDTV signal from a VTR, etc. or the built-in M U
Select and output one of the signals from the SE decoder. Then, the HDTV luminance signal correction circuit (7
), the contour is slightly corrected and the 17th trix circuit (
8).
（ト）発明の効果
上述の如く本発明によれば、ＮＴＳＣ信号受信時には速
度変調による輪郭強調により鮮明度が向上し、且つＨＤ
ＴＶ信号受信時には速度変調による画質劣化を招くこと
がない。(G) Effects of the Invention As described above, according to the present invention, when receiving an NTSC signal, sharpness is improved by contour enhancement by speed modulation, and HD
When receiving TV signals, there is no deterioration in image quality due to speed modulation.
第１図は本発明の一実施例におけるテレビジョン受像機
の概略ブロック図、第２図は従来のテレビジョン受像機
の概略ブロック図である。
（３）・・・速度変調回路、（５）・・・速度変調コイ
ル、（６）（１０）・・・第１、第２切換回路。FIG. 1 is a schematic block diagram of a television receiver according to an embodiment of the present invention, and FIG. 2 is a schematic block diagram of a conventional television receiver. (3) Speed modulation circuit, (5) Speed modulation coil, (6) (10) First and second switching circuits.
Claims (1)
１の信号より精細度の高い第２の信号を切換えて受信す
ると共に、電子ビームの走査速度を変化させて輪郭強調
を行なう速度変調手段を有するテレビジョン受像機にお
いて、 前記第１の信号受信時には前記速度変調手段により輪郭
強調された画像を映出すると共に、前記第２の信号受信
時には前記速度変調手段の動作を停止してなるテレビジ
ョン受像機。(1) Speed modulation means that switches and receives a first signal according to the standard television system and a second signal with higher definition than this first signal, and also changes the scanning speed of the electron beam to perform edge enhancement. In the television receiver having the following, an image whose outline is emphasized by the speed modulation means is displayed when the first signal is received, and an operation of the speed modulation means is stopped when the second signal is received. John receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24948390A JPH04127680A (en) | 1990-09-18 | 1990-09-18 | Television receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24948390A JPH04127680A (en) | 1990-09-18 | 1990-09-18 | Television receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04127680A true JPH04127680A (en) | 1992-04-28 |
Family
ID=17193642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24948390A Pending JPH04127680A (en) | 1990-09-18 | 1990-09-18 | Television receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04127680A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5325131A (en) * | 1993-05-03 | 1994-06-28 | Tektronix, Inc. | Multiformat television switcher |
| US5351094A (en) * | 1993-01-21 | 1994-09-27 | Funai Electric Co., Ltd. | Television receiver with scan velocity modulation being adjusted according to aspect ratio |
| KR100514752B1 (en) * | 2003-06-25 | 2005-09-14 | 삼성전자주식회사 | Automatic Brightness Stabilization apparatus of an image display device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6169279A (en) * | 1984-09-13 | 1986-04-09 | Matsushita Electric Ind Co Ltd | Television receiver |
| JPH02119470A (en) * | 1988-10-28 | 1990-05-07 | Sanyo Electric Co Ltd | Television receiver |
-
1990
- 1990-09-18 JP JP24948390A patent/JPH04127680A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6169279A (en) * | 1984-09-13 | 1986-04-09 | Matsushita Electric Ind Co Ltd | Television receiver |
| JPH02119470A (en) * | 1988-10-28 | 1990-05-07 | Sanyo Electric Co Ltd | Television receiver |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5351094A (en) * | 1993-01-21 | 1994-09-27 | Funai Electric Co., Ltd. | Television receiver with scan velocity modulation being adjusted according to aspect ratio |
| US5325131A (en) * | 1993-05-03 | 1994-06-28 | Tektronix, Inc. | Multiformat television switcher |
| KR100514752B1 (en) * | 2003-06-25 | 2005-09-14 | 삼성전자주식회사 | Automatic Brightness Stabilization apparatus of an image display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4978760B2 (en) | Image processing method and image processing apparatus | |
| US5001562A (en) | Scanning line converting system for displaying a high definition television system video signal on a TV receiver | |
| JPH04127680A (en) | Television receiver | |
| JP2589631B2 (en) | Chrominance noise reduction device | |
| US5712691A (en) | Method and apparatus for area dependent dynamic blue de-focusing | |
| JP3191322B2 (en) | Aspect ratio conversion display device | |
| JPH1079899A (en) | Television image receiver | |
| JPH0537801A (en) | High definition television receiver | |
| JP2718110B2 (en) | Television receiver | |
| JP3353971B2 (en) | Television receiver | |
| JP3731304B2 (en) | Video signal processing device and video display device | |
| JP2504441B2 (en) | Motion detection circuit | |
| JP2603673Y2 (en) | Television receiver | |
| JPH0795438A (en) | Pincushion distortion correcting circuit | |
| JPH07123367A (en) | Scanning line conversion circuit | |
| JPS60178782A (en) | Monitor picture receiver | |
| JPS61136385A (en) | Profile correcting device | |
| JPH04227166A (en) | Television receiver | |
| JPH04216274A (en) | Television receiver | |
| JPH04139965A (en) | Television receiver | |
| JPH1093842A (en) | Tv signal processing circuit | |
| JPS63135090A (en) | Picture quality correction circuit | |
| JPH05145782A (en) | Scanning speed modulating circuit for television set | |
| JPH0435586A (en) | Muse decoder | |
| JPH0447785A (en) | Television receiver |