JPS5911075A - Pocketable television receiver - Google Patents
Pocketable television receiverInfo
- Publication number
- JPS5911075A JPS5911075A JP11958482A JP11958482A JPS5911075A JP S5911075 A JPS5911075 A JP S5911075A JP 11958482 A JP11958482 A JP 11958482A JP 11958482 A JP11958482 A JP 11958482A JP S5911075 A JPS5911075 A JP S5911075A
- Authority
- JP
- Japan
- Prior art keywords
- screen
- video signal
- video
- contrast
- control
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/57—Control of contrast or brightness
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、映像信号及び音声信号を出力する放送信号処
理部と電源部を備えた受信機本体と、上記受信機本体か
らケーブルを介して供給源れる映像信号と駆動電圧で作
動する表示器の二体からなるポケッタブル・テレビ受信
機のコントラスト調整及びブライトネス調整に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a receiver main body that includes a broadcast signal processing section and a power supply section that output video signals and audio signals, and a video signal and drive source that are supplied from the receiver main body via a cable. This invention relates to contrast adjustment and brightness adjustment for a portable television receiver consisting of two voltage-operated displays.
従来の二体型のポケッタブル・テレビ受信機のコントラ
ント調整及びブライトネス調整には、回路構成上の問題
から以下の欠点があった。第１図に従来の回路構成例を
示して説明する。従来、二体型のポケシタプル書テレビ
受信機の表示器としては液晶パネルが用いられているの
で以下表示器としては液晶パネルにて説明する。The contrast adjustment and brightness adjustment of conventional dual-type portable television receivers have the following drawbacks due to circuit configuration problems. FIG. 1 shows an example of a conventional circuit configuration and will be described. Conventionally, a liquid crystal panel has been used as a display device in a two-type pocket television receiver, and therefore, the liquid crystal panel will be explained below as a display device.
第１図・従来の回路構成例では、受信機本体へから映像
信号出力１及び電源電圧２をケーブル３．４を介して表
示部ＢＩＣ供給している。映像信号は表示Ｂにて、水平
、垂直同期信号を振幅分離し液晶パネル５を駆動する同
期信号出力６を出す同期制御部７と、映像増幅出力８を
出す映像増幅部９に入力している。In the conventional circuit configuration example shown in FIG. 1, a video signal output 1 and a power supply voltage 2 are supplied from the receiver main body to the display section BIC via a cable 3.4. In display B, the video signal is input to a synchronization control section 7 which separates the amplitude of the horizontal and vertical synchronization signals and outputs a synchronization signal output 6 for driving the liquid crystal panel 5, and a video amplification section 9 that outputs a video amplification output 8. .
このとと、コントラスト調整用可肇抵抗１０を調整する
ことにより、第２図コントラスト調整時の映像信号に示
すように、第１図ａ点の映像信号の直流レベル１２をか
えずに、映像イを号の大キは１３を変えることができる
。また、ブライトネス調整用可変抵抗１４を調整するこ
とにより、第１図す点の映像（Ｊｉ号の直流レベル１２
を第３図ブライトネス調整時の映像信号に示すように変
化はせることがでとる。In addition, by adjusting the contrast adjustment flexible resistor 10, the video signal can be adjusted without changing the DC level 12 of the video signal at point a in FIG. 1, as shown in the video signal during contrast adjustment in FIG. The Daiki of the issue can change 13. In addition, by adjusting the brightness adjustment variable resistor 14, the image of the point shown in Figure 1 (DC level 12 of No. Ji) can be adjusted.
This can be achieved by changing the image signal as shown in the video signal at the time of brightness adjustment in Figure 3.
画面のコントラストは、映像信号の大片はと直接関係が
あり、一方、ブライトネスは映像信号の直流レベルπよ
って法まるので、上記コントラスト調整用可変抵抗１０
と、ブライトネス調整用可変［抗１１ Ｋよって、コツ
トラス）・、ブライトネスの調整が可能である。The contrast of the screen is directly related to the size of the video signal, while the brightness is determined by the DC level π of the video signal.
And, the brightness adjustment variable [resistance 11K, therefore, the truss], the brightness can be adjusted.
この従来の回路構成では、コントラスト調整によって０
点の映像信号の犬ときが変化してしまうため、映像信号
が小ン〈なった時、同期制御部１０での水平、垂直同期
信号の振幅分離能力が著しく劣下する。In this conventional circuit configuration, the contrast adjustment
Since the amplitude of the video signal at each point changes, when the video signal becomes small, the amplitude separation ability of the horizontal and vertical synchronization signals in the synchronization control section 10 is significantly degraded.
また、コントラスト調整用可変抵抗１０とブライトネス
調整用可変抵抗１１が、受信機本体Ａと表示部ＢＶｒ：
別ねて配置されているたｄ）、画面の調整が行いにくい
。Further, the contrast adjustment variable resistor 10 and the brightness adjustment variable resistor 11 are connected to the receiver main body A and the display section BVr:
d) It is difficult to adjust the screens because they are arranged separately.
本発明は、上記の従来の回路構成の欠点を除去するもの
で、同期の乱れの小でい安定した画面とコントラスト・
ブライトネス調整のしやすいポケッタブル・テレビ受信
機を提供するものである。The present invention eliminates the drawbacks of the conventional circuit configuration described above, and provides a stable screen with less synchronization disturbance and contrast.
The present invention provides a pocketable television receiver whose brightness can be easily adjusted.
本発明ｆよる回路構成例を第４図に示す。映像信号出力
１４は受信機本体Ａからケーブル１５を逼って同期制御
部１６と映像増幅部１７に入力している。映像増幅部１
７にはコントラスト調整用可変抵抗１８及びブライトネ
ス調整用可変抵抗１９がある。同期信号出力２０と映像
増幅出力２１で液晶パネル２２を駆動して画面を映し出
しているのは、従来と変わらかい。An example of a circuit configuration according to the present invention f is shown in FIG. The video signal output 14 is input from the receiver body A through a cable 15 to a synchronization control section 16 and a video amplification section 17. Video amplification section 1
7 includes a variable resistor 18 for contrast adjustment and a variable resistor 19 for brightness adjustment. The fact that the synchronization signal output 20 and video amplification output 21 drive the liquid crystal panel 22 to display the screen is different from the conventional one.
本発明による回路構成で語、コントラスト調整用可変抵
抗１８ｆｆよって、第４図Ｃ点での映像信号の直流レベ
ル、大と濾とも変化しないので、安定した水平、垂直同
期信号の振幅分離が行える。In the circuit configuration according to the present invention, since the contrast adjustment variable resistor 18ff does not change the DC level of the video signal at point C in FIG. 4, it is possible to stably separate the amplitudes of the horizontal and vertical synchronizing signals.
また、コントラスト調整用可変抵抗１８、ブライトネス
調整用可変抵抗１９が、共に表示部Ｂ［あるため、画面
を見ながら適切な調整が行いやすい。Furthermore, since the contrast adjustment variable resistor 18 and the brightness adjustment variable resistor 19 are both located in the display section B, it is easy to make appropriate adjustments while looking at the screen.
本発明は、液晶パネルを表示器とした二体型ポケッタブ
ル・テレビ受信機に限らず、いずれの表示器を用いた二
体型ポケッタブル・テレビ受（Ｋｍｆも広く応用でとる
。The present invention is not limited to a dual-type pocketable television receiver using a liquid crystal panel as a display, but can also be broadly applied to a dual-type pocketable television receiver (Kmf) using any display.
第１図は従来の回路構成例、第２図はコントラスト調整
時の映像信号、第３図はプライｌネス調整時の映像信号
、第４図は本発明による回路構成例である。
Ａ・・・・・・受信機本体 Ｂ・・・・・・表示部１
・・・・・・映像信号出力 ２−・・・・・電源電圧５
．４・・・・・・ケーブル ５・・・・・・液晶パネル
６・・・・・・同期信号υ４力 ７・・・・・・同期信
御部８・・・・・・映像増幅出力 ９・・・・・・映像
増幅部１０・・・・・・フントラスト調整用可賛抵抗１
１・・・・・・ブライトネス調整用可変抵抗１２・・・
・・・映像信号の直流レベル１３・・・・・・映像信号
の大きさ
１４・・・・・・映像信号出力 １５・・・・・・ケー
ブル１６・・・・・・同期制御部 １７・・・・・・
映像増幅部１８・・・・・・コントラスト調整用可変抵
抗１９・・・・・・ブライトネス調整用可変抵抗２０・
・・・・・同期信号出力
２１・・・・・・映像信号出力
２２・・・・・・液晶バネヤ
以−に
出願人 株式会社 諏訪精工舎FIG. 1 shows an example of a conventional circuit configuration, FIG. 2 shows a video signal during contrast adjustment, FIG. 3 shows a video signal during plyness adjustment, and FIG. 4 shows an example of a circuit configuration according to the present invention. A: Receiver body B: Display section 1
...Video signal output 2-...Power supply voltage 5
．． 4... Cable 5... Liquid crystal panel 6... Synchronous signal υ4 power 7... Synchronous signal control section 8... Video amplification output 9 ...Video amplifying section 10...Fun trust adjustment resistance 1
1...Variable resistor for brightness adjustment 12...
...Video signal DC level 13...Video signal size 14...Video signal output 15...Cable 16...Synchronization control section 17.・・・・・・
Video amplifying section 18...Variable resistor for contrast adjustment 19...Variable resistor for brightness adjustment 20.
...Sync signal output 21...Video signal output 22...Liquid crystal spring holder Applicant: Suwa Seikosha Co., Ltd.
Claims (1)
部を備えた受信機本体と、上記受信機本体からケーブル
を介してイμ、給ばれる映像イβ号と駆動電圧で作動す
る表示器とからなるポケッタブル・テレビ受信機におい
て、画面のコントラスト及びブライトネス調整を表示器
に設置−またことを特徴とすみポケッタブル・テレビ受
イ言機。A receiver main body equipped with a broadcast signal processing section and a power supply section that output video signals and audio signals, and a display device operated by the video signal Iμ and drive voltage supplied from the receiver main body via a cable. A pocketable television receiver comprising screen contrast and brightness adjustment installed on the display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11958482A JPS5911075A (en) | 1982-07-09 | 1982-07-09 | Pocketable television receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11958482A JPS5911075A (en) | 1982-07-09 | 1982-07-09 | Pocketable television receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5911075A true JPS5911075A (en) | 1984-01-20 |
Family
ID=14764975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11958482A Pending JPS5911075A (en) | 1982-07-09 | 1982-07-09 | Pocketable television receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5911075A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08331469A (en) * | 1995-06-06 | 1996-12-13 | Matsushita Electric Ind Co Ltd | Television set with remote controller |
-
1982
- 1982-07-09 JP JP11958482A patent/JPS5911075A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08331469A (en) * | 1995-06-06 | 1996-12-13 | Matsushita Electric Ind Co Ltd | Television set with remote controller |
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