JPH02189085A - High definition television receiver - Google Patents
High definition television receiverInfo
- Publication number
- JPH02189085A JPH02189085A JP1007862A JP786289A JPH02189085A JP H02189085 A JPH02189085 A JP H02189085A JP 1007862 A JP1007862 A JP 1007862A JP 786289 A JP786289 A JP 786289A JP H02189085 A JPH02189085 A JP H02189085A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- display
- standard television
- aspect ratio
- television signal
- 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
- 238000012545 processing Methods 0.000 abstract description 5
- 230000003321 amplification Effects 0.000 abstract description 2
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000012935 Averaging Methods 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 241001092070 Eriobotrya Species 0.000 description 1
- 235000009008 Eriobotrya japonica Nutrition 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000005262 ferroelectric liquid crystals (FLCs) Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012925 reference material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0117—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal
- H04N7/0122—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal the input and the output signals having different aspect ratios
Landscapes
- Engineering & Computer Science (AREA)
- Computer Graphics (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、現行標準テレビジョン信号も映出できる高品
位テレビジョン受信装置の標準テレビジョン信号の映出
方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for displaying a standard television signal in a high-definition television receiver that can also display a current standard television signal.
本発明の標準テレビジョン信号（以下、テレビジョンを
テレビと略す。）も映出できる高品位テレビ受信装置で
は、標準テレビ信号の映出時アスペクト比の違いによっ
て生ずるディスプレイ上の残余部分に、焼き付き段差を
防止するため標準テレビ信号と同等の平均輝度信号を補
足すると共にその部分を遮光部材で覆って見苦しさを軽
減するようにした。In the high-definition television receiving device of the present invention that can also display standard television signals (hereinafter referred to as television), burn-in occurs on the remaining portion of the display caused by the difference in aspect ratio when displaying standard television signals. To prevent differences in level, an average brightness signal equivalent to a standard television signal is supplemented, and the area is covered with a light shielding member to reduce unsightliness.
高品位テレビは、精細なテレビ画像を大画面ワイドスク
リーンに表示することにより、標準テレビ放送では得ら
れない迫力と臨場感などの新しい魅力を求めようとする
もので、近年、米国・ヨーロッパ各国でも関心が高まっ
て来ている。この高品位テレビは、日本放送協会（ＮＨ
Ｋ）により提案されたもので、画面アスペクト比９：１
６（縦：横）、走査線が１１２５本で現行標準テレビ（
アスペクト比３：４、走査線５２５本）と異なる。By displaying detailed television images on a large wide screen, high-definition television aims to provide new appeal such as power and presence that cannot be obtained with standard television broadcasting. Interest is increasing. This high-definition television is the Japan Broadcasting Corporation (NH)
K), with a screen aspect ratio of 9:1.
6 (vertical: horizontal), with 1125 scanning lines and the current standard television (
(3:4 aspect ratio, 525 scanning lines).
従来の高品位テレビ受信装置のディスプレイに走査変換
された標準テレビ信号を映出した状態を第５図に示す。FIG. 5 shows a state in which a scan-converted standard television signal is displayed on the display of a conventional high-definition television receiver.
アスペクト比９：１６−のディスプレイにおいてはアス
ペクト比３：４の標準テレビ信号をディスプレイの縦方
向の長さを同一にして映出すと、第５図に示したように
ディスプレイの両側に画像の映出されない残余部分２３
が生ずる。このような場合、従来は走査変換時にこの残
余部分２３に別の信号（例えば単一の青色信号）を補足
していた。参考公知資料としては例えば特開昭６３−２
６１７３号公報がある。When a standard television signal with an aspect ratio of 3:4 is displayed on a display with an aspect ratio of 9:16-, with the vertical length of the display being the same, images will be projected on both sides of the display as shown in Figure 5. Remaining portion not released 23
occurs. In such a case, conventionally, this residual portion 23 is supplemented with another signal (for example, a single blue signal) during scan conversion. Examples of publicly known reference materials include JP-A-63-2
There is a publication No. 6173.
しかしながら、前記のような標準テレビ信号を第５図の
ように映出する高品位テレビ受信装置では、ディスプレ
イの蛍光面において補足信号表示の残余部分と中央部の
標準テレビ信号表示部分との信号レベルの違いによって
焼き付き段差が生ずる恐れがある。また、ディスプレイ
において標準テレビ信号の平均輝度が低下した場合、両
側の補足信号表示の残余部分２３の輝度に邪魔されて見
にくくなる恐れがある。However, in the high-definition television receiving device that displays the standard television signal as shown in FIG. There is a possibility that a burn-in level difference may occur due to the difference in the values. Furthermore, if the average brightness of the standard television signal on the display decreases, the brightness of the remaining portions 23 of the supplementary signal displays on both sides may interfere with the display, making it difficult to see.
〔課題を解決するための手段］
前記課題を解決するために本発明の高品位テレビ受信装
置は、標準テレビ信号を映出する時に生ずる恐れのある
、ディスプレイの蛍光面の標準テレビ信号表示部分と補
足信号表示する残余部分との間の焼き付き段差を防止す
るため、補足信号レベルを標準テレビ信号の１水平期間
の時間平均輝度に等しくし、かつディスプレイの補足信
号を表示する残余部分を遮光部材で覆い見苦しさを軽減
させる。[Means for Solving the Problems] In order to solve the above-mentioned problems, the high-definition television receiving device of the present invention eliminates the standard television signal display portion of the fluorescent screen of the display, which may occur when displaying standard television signals. In order to prevent a burn-in level difference between the remaining part of the display displaying the supplementary signal and the remaining part displaying the supplementary signal, the level of the supplementary signal is made equal to the time average brightness of one horizontal period of the standard television signal, and the remaining part of the display displaying the supplementary signal is covered with a light shielding material. Reduces unsightly covering.
（作用〕
本発明は前述したように標準テレビ信号のアスペクト比
変更による補足信号表示の残余部分の輝度を、その直前
の標準テレビ信号の１水平期間の映像信号レベルの時間
平均レベルとするため、標準テレビ信号部分と補足信号
表示の残余部分との輝度レベル差がなくなり、ディスプ
レイの蛍光面の焼き付き段差は生じなくなる。また、デ
ィスプレイの補足信号表示の残余部分を、遮光部材で覆
うことにより見苦しさは軽減される。(Function) As described above, the present invention sets the brightness of the remaining portion of the supplementary signal display by changing the aspect ratio of the standard television signal to the time average level of the video signal level of one horizontal period of the standard television signal immediately before, The difference in brightness level between the standard TV signal part and the remaining part of the supplementary signal display is eliminated, and the burn-in step on the fluorescent screen of the display no longer occurs.In addition, by covering the remaining part of the supplementary signal display on the display with a light-shielding material, the unsightly appearance is eliminated. is reduced.
以下、本発明の実施例の高品位テレビ受信装置について
図面を参照しながら説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS A high-definition television receiving apparatus according to an embodiment of the present invention will be described below with reference to the drawings.
第１図は、本発明の第一の実施例における高品位テレビ
受信装置の要部破断斜視図である。図において、１１は
キャビネット、１２はブラウン管、１３はよろい形遮光
具、１４はスライド溝を示している。FIG. 1 is a cutaway perspective view of essential parts of a high-definition television receiver according to a first embodiment of the present invention. In the figure, 11 is a cabinet, 12 is a cathode ray tube, 13 is an armor-shaped light shield, and 14 is a slide groove.
よろい形遮光具１３はキャビネット１１の上板と底板に
設けられたスライド溝１４に沿って矢印で示した方向に
移動できるようになっており、高品位テレビ映出時はキ
ャビネット１１の内部に押し込められ、標準テレビ映出
時は引き出してブラウン管の補足信号表示部分を覆うよ
うにする。遮光具１３は特によろい形にする必要はなく
、又、材料としては遮光性のあるもの、例えば木、厚い
布、不透明樹脂等であればよい。第２図は本実施例にお
ける高品位テレビ受信装置の概略回路構成図である。図
において、ｌは標準テレビジョン信号入力端子、２は高
品位テレビジョン信号入力端子、３はＡ／Ｄ変換回路、
４はアスペクト比９：１６のフレームメモリ、５はＩＨ
ラインメモリ（但し、Ｈは１水平走査期間を表す）、６
はＩＨラインメモリ５の出力を受けて平均値を算出する
加算平均回路、７はＤ／Ａ変換回路、８は標準テレビ信
号と高品位テレビ信号とを切り換えて信号を処理する信
号処理回路、９はディスプレイ、１０は偏向回路を示し
ている。The armor-shaped light shielding device 13 can be moved in the direction shown by the arrow along slide grooves 14 provided on the top and bottom plates of the cabinet 11, and can be pushed into the interior of the cabinet 11 when displaying high-definition television. When displaying standard television, it is pulled out to cover the supplementary signal display area of the CRT. The light shielding tool 13 does not need to be particularly armored, and may be made of any material that has light shielding properties, such as wood, thick cloth, opaque resin, etc. FIG. 2 is a schematic circuit diagram of the high-definition television receiving apparatus in this embodiment. In the figure, l is a standard television signal input terminal, 2 is a high-definition television signal input terminal, 3 is an A/D conversion circuit,
4 is frame memory with an aspect ratio of 9:16, 5 is IH
Line memory (H represents 1 horizontal scanning period), 6
9 is an averaging circuit that receives the output of the IH line memory 5 and calculates an average value; 7 is a D/A conversion circuit; 8 is a signal processing circuit that processes the signal by switching between a standard television signal and a high-definition television signal; 10 indicates a display, and 10 indicates a deflection circuit.
以上のように構成された高品位テレビ受信装置について
動作を説明する。標準テレビジョン信号入力端子１より
入力される標準テレビ信号をＡ／Ｄ変換回路３によりデ
ジタル変換してフレームメモリ（アスペクト比９：１６
）の標準テレビ表示領域に記憶させる。もう一つのデジ
タル変換された出力はＩＨ毎にＩＨラインメモリ５に記
憶され、次にＩＨ毎に加算平均回路６に送られ演算され
てＩＨ期間の平均輝度レベルが決められる。この平均輝
度レベル情報をフレームメモリ４の当該ＩＨラインに続
く補足信号表示の領域に送り、その補足信号ラインの輝
度として記憶される。続いて画面左側の次の補足信号表
示の領域に前記と同様の輝度レベルのものを記憶させる
。このようにしてフレームメモリ４上で標準テレビ信号
に所定の補足信号を追加してアスペクト比を９：１６に
変換し、読み出してＤ／Ａ変換回路７によりアナログの
信号に変える。次にアナログ信号は信号処理回路８に入
力され増幅その他所定の処理を経てディスプレイ９に入
力される。ディスプレイ９に映出されたこのアスペクト
比９：１６の画像の左右の端部の走査線は単一色で（例
えば白色）先行する標準テレビ信号の１ラインの輝度を
平均したレベルで輝く。即ち標準テレビ信号が表示され
る部分と補足信号表示の残余の部分との平均輝度の差は
無い。The operation of the high-definition television receiving apparatus configured as described above will be explained. The standard television signal input from the standard television signal input terminal 1 is digitally converted by the A/D conversion circuit 3 and stored in frame memory (aspect ratio 9:16).
) in the standard TV display area. Another digitally converted output is stored in the IH line memory 5 for each IH, and then sent to the averaging circuit 6 for each IH and calculated to determine the average brightness level for the IH period. This average brightness level information is sent to the supplementary signal display area following the relevant IH line of the frame memory 4, and is stored as the brightness of the supplementary signal line. Subsequently, a luminance level similar to that described above is stored in the next supplementary signal display area on the left side of the screen. In this way, a predetermined supplementary signal is added to the standard television signal on the frame memory 4, the aspect ratio is converted to 9:16, and the signal is read out and converted into an analog signal by the D/A conversion circuit 7. Next, the analog signal is input to a signal processing circuit 8, subjected to amplification and other predetermined processing, and then input to a display 9. The scanning lines at the left and right ends of this image with an aspect ratio of 9:16 projected on the display 9 are a single color (for example, white) and shine at a level that is the average brightness of one line of the preceding standard television signal. That is, there is no difference in average brightness between the portion where the standard television signal is displayed and the remaining portion of the supplementary signal display.
第３図に第二の実施例を示す。本実施例は高品位プロジ
ェクションＴＶの投写管に応用した場合のものである。FIG. 3 shows a second embodiment. This embodiment is applied to a projection tube of a high-quality projection TV.
図において、１５は投写管、１６は遮光板、１７は残余
部分を示している。残余部分１７は第一の実施例で示し
たものと同じ補足信号表示の残余部分である。２枚の遮
光板１６は機構的に投写管１５の前面の両端部に配置さ
れ、かつ左右に移動できる状態で取りつける。遮光板１
６の材料としては遮光性のあるもの（例えば金属、不透
明樹脂、厚い祇）を用いる。標準テレビ信号映出時は遮
光板１６を移動させて投写管１５の補足信号表示の残余
部分１７を覆うようにする。In the figure, 15 is a projection tube, 16 is a light shielding plate, and 17 is a remaining portion. The remainder 17 is the remainder of the same supplementary signal representation as shown in the first embodiment. The two light shielding plates 16 are mechanically arranged at both ends of the front surface of the projection tube 15 and are attached so as to be movable left and right. Light shielding plate 1
As the material 6, a light-shielding material (for example, metal, opaque resin, thick silk) is used. When displaying the standard television signal, the light shielding plate 16 is moved to cover the remaining portion 17 of the supplementary signal display on the projection tube 15.
第４図に第三の実施例を示す。この図は高品位テレビ受
信装置の分解斜視図を示したものである。FIG. 4 shows a third embodiment. This figure shows an exploded perspective view of a high-definition television receiver.
図において、１８はブラウン管、１９は標準テレビ信号
映出時の補足信号表示の残余部分、２０はブラウン管１
８の前面に取りつける光学フィルタ、２１は液晶シャッ
タを示している。光学フィルタ２０は中央部の標準テレ
ビ信号表示部分に相当する処は透明になっており左右端
部の補足信号表示の残余部分１９に相当する部分に液晶
シャッタ能を持たせたもので一体成型により作る。液晶
シャッタ２１としては、例えば強誘電性の液晶を用い、
電界のオン、オフにより光を透過させたり遮断したりす
るように電圧印加回路（図示せず）を設ける。第一の実
施例に比べて本実施例の場合、機械的に動く部分が無く
、電気的に切換えられるという特徴がある。In the figure, 18 is a cathode ray tube, 19 is the remaining part of the supplementary signal display when standard television signals are displayed, and 20 is the cathode ray tube 1.
An optical filter 8 is attached to the front surface, and 21 is a liquid crystal shutter. The optical filter 20 is transparent in the central part corresponding to the standard television signal display part, and has a liquid crystal shutter function in the left and right end parts corresponding to the remaining parts 19 of the supplementary signal display, and is integrally molded. make. As the liquid crystal shutter 21, for example, a ferroelectric liquid crystal is used,
A voltage application circuit (not shown) is provided to transmit or block light by turning on or off the electric field. Compared to the first embodiment, this embodiment has a feature that there are no mechanically moving parts and that switching is done electrically.
標準テレビ信号も映出可能な高品位テレビ受信装置にお
いて、標準テレビ信号を映出した場合、アスペクト比の
違いによって生ずるブラウン管の蛍光面の両端部の残余
部分に信号を補足して標準テレビ信号部分と残余部分の
輝度の平均レベルを等しくすることによりブラウン管の
蛍光面の焼き付き段差が生じなくなった。また、ブラウ
ン管の補足信号表示の残余部分を遮光部材で覆うように
したため画面の見苦しさが軽減された。When a standard TV signal is displayed on a high-definition TV receiver that can also display standard TV signals, the signal is captured on the remaining portions of both ends of the fluorescent screen of the cathode ray tube, which is caused by the difference in aspect ratio, and the standard TV signal portion is displayed. By making the average level of brightness of the remaining portion the same as that of the remaining portion, burn-in steps on the phosphor screen of the cathode ray tube no longer occur. Additionally, the remaining portion of the supplementary signal display on the cathode ray tube was covered with a light-shielding material, making the screen less unsightly.
は第二の実施例における遮光板の配置図、第４図は第三
の実施例における分解斜視図、第５図は従来の標準テレ
ビジョン信号の映出状態図である。4 is an exploded perspective view of the third embodiment, and FIG. 5 is a diagram showing the projection state of a conventional standard television signal.
３・−一−−−−・−一一一−−・Ａ／Ｄ変換回路４−
・・・・・・−・・−・−フレームメモリ５−・・−・
・・・・・−・−・ＩＨラインメモリ６・・・−・・・
・・−・−・−加算平均回路７−・・・・・・・・・・
−Ｄ／Ａ変換回路９−−−−−・−・・・・・・−ディ
スプレイ１３・−・・・・・・−・・・−よろい形遮光
具１４・−・・−・・−スライド溝
１５−−−−・・−−一−−−−−−投写管１６・〜・
−−−−−−−−−一遮光板２０・・−・−−−−・−
・−・光学フィルタ２１・・−一一一−−・−・・・一
液晶シャッタ3.-1-------111--A/D conversion circuit 4-
・・・・・・－・・−・−Frame memory 5−・・・・−・
・・・・・−・−・IH line memory 6・・・−・・
・・・−・−Additional averaging circuit 7−・・・・・・・・・・
-D/A conversion circuit 9-----Display 13---------Armor type light shield 14-----Slide Groove 15-----1-----Projection tube 16...
−−−−−−−−−One light shielding plate 20・・−・−−−−・−
・−・Optical filter 21・・−111−−・−・・1 LCD shutter
第１図は第一の実施例における要部破断斜視図、第２図
は本発明における概略回路構成図、第３図第−の芙杷例
にお１する要廿潴建序叫視図第１図
本冗明）Ｃあ′（ブる機略回路構成図
第三の尖亮例１″−お゛ける分解鍜図
第４図
第二の大施例における逮尤吸の配置図
第３図
２２、を品位ティ又プレイ（アスペクト比９：１６）従
来の標準テレビジョンイ菖号の吠出イ大熊図第５図Fig. 1 is a cutaway perspective view of essential parts in the first embodiment, Fig. 2 is a schematic circuit configuration diagram of the present invention, and Fig. 3 is a perspective view of the main parts of the loquat example shown in Fig. 3. (Figure 1 (for illustration purposes only)) C' (Bru mechanical circuit configuration diagram Third example 1'' - exploded view Figure 4 Layout diagram of the arrester suction in the second large example 3) Figure 22, the quality playback (aspect ratio 9:16) of the conventional standard television Irisa's roaring Big Bear figure Figure 5
Claims (1)
る現行標準テレビジョン方式の信号を映出できる高品位
テレビジョン受信装置において、前記現行標準テレビジ
ョン方式の信号をディスプレイの縦方向一杯に映出した
時、前記ディスプレイの両側又は片側に生ずる残余部分
に表示信号を補足すると共に当該部分を遮光部材で覆う
ことを特徴とする高品位テレビジョン受信装置。In a high-definition television receiving device capable of displaying a high-definition television system signal and a current standard television system signal with different aspect ratios, the current standard television system signal is displayed to fill the vertical direction of the display. A high-definition television receiving device characterized in that a display signal is supplemented to the remaining portions occurring on both sides or one side of the display, and the remaining portions are covered with a light shielding member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1007862A JPH02189085A (en) | 1989-01-18 | 1989-01-18 | High definition television receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1007862A JPH02189085A (en) | 1989-01-18 | 1989-01-18 | High definition television receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02189085A true JPH02189085A (en) | 1990-07-25 |
Family
ID=11677461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1007862A Pending JPH02189085A (en) | 1989-01-18 | 1989-01-18 | High definition television receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02189085A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0382284A (en) * | 1989-08-25 | 1991-04-08 | Hitachi Ltd | Video display device |
| JPH04119181U (en) * | 1991-04-08 | 1992-10-26 | 株式会社上野製作所 | TV receiver screen edge coating device |
| US5526066A (en) * | 1991-09-20 | 1996-06-11 | Sony Corporation | Picture display device |
-
1989
- 1989-01-18 JP JP1007862A patent/JPH02189085A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0382284A (en) * | 1989-08-25 | 1991-04-08 | Hitachi Ltd | Video display device |
| JP2812731B2 (en) * | 1989-08-25 | 1998-10-22 | 株式会社日立製作所 | Video display device |
| JPH04119181U (en) * | 1991-04-08 | 1992-10-26 | 株式会社上野製作所 | TV receiver screen edge coating device |
| US5526066A (en) * | 1991-09-20 | 1996-06-11 | Sony Corporation | Picture display device |
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