JP2599825Y2 - Television receiver - Google Patents
Television receiverInfo
- Publication number
- JP2599825Y2 JP2599825Y2 JP1991102993U JP10299391U JP2599825Y2 JP 2599825 Y2 JP2599825 Y2 JP 2599825Y2 JP 1991102993 U JP1991102993 U JP 1991102993U JP 10299391 U JP10299391 U JP 10299391U JP 2599825 Y2 JP2599825 Y2 JP 2599825Y2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- switching
- input
- detection 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.)
- Expired - Lifetime
Links
Landscapes
- Test And Diagnosis Of Digital Computers (AREA)
- Details Of Television Scanning (AREA)
Description
【考案の詳細な説明】[Detailed description of the invention]
【０００１】[0001]
【産業上の利用分野】本考案は、テレビジョン受信機に
おいて、画面表示が９：１６などの横長であるテレビジ
ョン受信機に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver having a horizontally long screen display such as 9:16.
【０００２】[0002]
【従来の技術】元来、ＮＴＳＣ信号は、アスペクト比が
３：４であるが、近年、映画のビスタサイズやシネマサ
イズのソフトの増加や、アスペクト比が９：１６のハイ
ビジョン放送をＮＴＳＣ信号に変換するＭＵＳＥ−ＮＴ
ＳＣコンバータの普及など横長の信号が増加してきた。
一方横長のＣＲＴを有するテレビジョン受信機では、各
種のアスペクト比の信号を、水平方向に時間圧縮・伸長
したり、垂直方向に圧縮伸長したりすることによりＣＲ
Ｔに表示する。2. Description of the Related Art Originally, the aspect ratio of an NTSC signal is 3: 4. MUSE-NT to convert
Horizontal signals have increased due to the spread of SC converters.
On the other hand, in a television receiver having a horizontally long CRT, a signal having various aspect ratios is time-compressed / expanded in the horizontal direction or compressed / expanded in the vertical direction to thereby obtain a CR.
Display on T.
【０００３】９：１６などの横長の信号を、水平方向に
時間圧縮されたＮＴＳＣ信号は３：４のＣＲＴを有する
テレビジョン受信機では、真円も縦長に表示されるが、
９：１６などの横長のＣＲＴを有するテレビジョン受信
機では、正規に真円に表示される。[0003] In a television receiver having a CRT of 3: 4, an NTSC signal obtained by horizontally compressing a horizontally long signal such as 9:16 or the like is displayed as a vertically long rectangle in a television receiver having a 3: 4 CRT.
In a television receiver having a horizontally long CRT such as 9:16, it is displayed as a perfect circle.
【０００４】また、この水平方向に時間圧縮されたＮＴ
ＳＣ信号に対して、識別信号としてＳ入力信号のＣ（ク
ロマ信号）にＤＣ電圧を重畳されており、この識別信号
を検出し横長テレビジョン受信機の表示モードを切り替
える。Further, the NT time-compressed in the horizontal direction
A DC voltage is superimposed on C (chroma signal) of the S input signal as an identification signal with respect to the SC signal, and this identification signal is detected to switch the display mode of the landscape television receiver.
【０００５】以下に従来の複数の映像入力端子を有する
テレビジョン受信機において、水平方向に時間圧縮され
たＮＴＳＣ信号のＳ入力信号のＣ（クロマ信号）に重畳
された識別信号であるＤＣ電圧を検出し、ＣＲＴへの表
示モードを切り替える回路構成について説明する。In a conventional television receiver having a plurality of video input terminals, a DC voltage which is an identification signal superimposed on C (chroma signal) of an S input signal of an NTSC signal which has been time-compressed in the horizontal direction is converted to a DC voltage. A circuit configuration for detecting and switching the display mode to the CRT will be described.
【０００６】図３は従来の表示モードを切り替える回路
構成である。図３において、１は入力切り換え回路、２
および３および４は水平圧縮識別信号検出回路、５はマ
イコン、６は表示モードのアスペクト比を変換する回路
である。複数の外部入力信号は、各信号毎に水平圧縮識
別信号を検出しマイコンに入力する。マイコンでは、水
平圧縮識別信号の有無を認識し、アスペクト比変換回路
をコントロールしＣＲＴの表示モードを切り換える。FIG. 3 shows a conventional circuit configuration for switching a display mode. In FIG. 3, reference numeral 1 denotes an input switching circuit;
Reference numerals 3 and 4 denote horizontal compression identification signal detection circuits, reference numeral 5 denotes a microcomputer, and reference numeral 6 denotes a circuit for converting the aspect ratio of the display mode. The plurality of external input signals detect a horizontal compression identification signal for each signal and input to the microcomputer. The microcomputer recognizes the presence or absence of the horizontal compression identification signal, controls the aspect ratio conversion circuit, and switches the display mode of the CRT.
【０００７】[0007]
【考案が解決しようとする課題】しかし、上記のような
構成では、複数の外部入力信号の水平圧縮識別信号検出
回路からの検出信号は複数本あり、マイコンの入力ポー
トが外部入力の数だけ必要になるという問題点を有して
いた。However, in the above configuration, there are a plurality of detection signals from the horizontal compression identification signal detection circuit for a plurality of external input signals, and the number of input ports of the microcomputer is required by the number of external inputs. Had the problem of becoming
【０００８】本考案は、上記問題点を解決するもので、
マイコンの入力ポートが水平圧縮識別信号検出信号の数
必要としない回路構成を提供するものである。The present invention solves the above problems,
An object of the present invention is to provide a circuit configuration in which an input port of a microcomputer does not require the number of horizontal compression identification signal detection signals.
【０００９】[0009]
【課題を解決するための手段】この目的を達成するため
に本考案の回路構成では、水平方向に時間圧縮された信
号であることを表す識別信号を検出する検出回路と、こ
の検出信号を入力切り換え回路の入力選択と同期して切
り換える検出信号切り換え回路を設けたものである。In order to achieve this object, a circuit configuration according to the present invention comprises a detection circuit for detecting an identification signal indicating that the signal is time-compressed in the horizontal direction, and an input of the detection signal. A detection signal switching circuit for switching in synchronization with the input selection of the switching circuit is provided.
【００１０】[0010]
【作用】本考案の回路構成では、外部入力の数と同数の
マイコンの入力ポートを有せず、一本の入力ポートで複
数の入力信号の水平方向に時間圧縮された信号であるこ
とを表す識別信号を検出し、テレビジョンのアスペクト
表示を切り換える事ができる。The circuit configuration of the present invention does not have the same number of input ports of the microcomputer as the number of external inputs, and indicates that a single input port is a time-compressed signal of a plurality of input signals in the horizontal direction. The aspect signal of the television can be switched by detecting the identification signal.
【００１１】[0011]
【実施例】（実施例１） 以下、本考案の実施例を図１によって説明する。(Embodiment 1) An embodiment of the present invention will be described below with reference to FIG.
【００１２】入力された信号は、１の入力切り換え回路
で信号を選択するとともに、それぞれ各入力に応じ、２
〜４の水平圧縮識別信号検出回路によって、入力された
信号が水平圧縮された信号か否かの検出信号を出力す
る。この複数の検出信号は、５の検出信号切り換え回路
でスイッチされマイコンへ入力される。マイコンは、検
出信号に応じ、７のアスペクト比変換回路を制御するコ
ントロール信号を出力する。The input signal is selected by one input switching circuit, and the signal is selected according to each input.
The horizontal compression identification signal detection circuit outputs a detection signal indicating whether or not the input signal is a horizontal compressed signal. The plurality of detection signals are switched by the five detection signal switching circuits and input to the microcomputer. The microcomputer outputs a control signal for controlling the 7 aspect ratio conversion circuit according to the detection signal.
【００１３】５の検出信号切り換え回路を設けること
と、１の入力切り換え回路と５の検出信号切り換え回路
を、同じ入力を選択するようにコントロールすることに
より、マイコンへの入力は、一本で検出することができ
る。By providing the detection signal switching circuit of 5 and controlling the input switching circuit of 1 and the detection signal switching circuit of 5 so as to select the same input, the input to the microcomputer can be detected by one. can do.
【００１４】（実施例２） 図２では、図１の６のマイコンを９の制御回路でコント
ロール信号を発生し、７のアスペクト比変換回路を制御
する。(Embodiment 2) In FIG. 2, a control signal is generated by a control circuit 9 of the microcomputer 6 in FIG. 1 to control an aspect ratio conversion circuit 7.
【００１５】[0015]
【考案の効果】本考案の回路構成では、複数の外部入力
端子を有し、水平方向に時間圧縮された信号であること
を表す識別信号を検出し、ＣＲＴへのアスペクト表示を
切り換える回路において、検出信号を切り換えることに
よって、マイコンへの入力信号を一本にし、複数の入力
ポートを必要としないで目的を達成できる。According to the circuit configuration of the present invention, a circuit that has a plurality of external input terminals, detects an identification signal indicating that the signal is time-compressed in the horizontal direction, and switches the aspect display to the CRT, By switching the detection signal, the input signal to the microcomputer is made one, and the object can be achieved without requiring a plurality of input ports.
【図１】本考案の第一の実施例による回路構成ブロック
図FIG. 1 is a circuit block diagram according to a first embodiment of the present invention;
【図２】本考案の第二の実施例による回路構成ブロック
図FIG. 2 is a circuit configuration block diagram according to a second embodiment of the present invention;
【図３】従来の回路構成ブロック図FIG. 3 is a block diagram of a conventional circuit configuration.
１ 入力回路切り換え回路 ２ 入力１の信号に対する水平圧縮識別信号検出回路 ３ 入力２の信号に対する水平圧縮識別信号検出回路 ４ 入力ｎの信号に対する水平圧縮識別信号検出回路 ５ 検出信号切り換え回路 ６ マイコン ７ アスペクト変換回路 ８ 入力切り換えコントロール信号 ９ 制御回路 Reference Signs List 1 input circuit switching circuit 2 horizontal compression identification signal detection circuit for input 1 signal 3 horizontal compression identification signal detection circuit for input 2 signal 4 horizontal compression identification signal detection circuit for input n signal 5 detection signal switching circuit 6 microcomputer 7 aspect Conversion circuit 8 Input switching control signal 9 Control circuit
Claims (2)
切換える入力切換回路と、 入力された各映像信号の水平方向に時間圧縮された信号
であることを表す識別信号を検出するために前記複数の
外部映像入力端子にそれぞれ接続された検出回路と、 前記検出回路からの各検出信号を前記入力切換回路入力
選択と同期して切換える検出信号切換回路と、 前記検出信号切換回路で切換えられた検出信号を処理す
るマイコンと、 前記マイコンで処理された検出信号に基づくコントロー
ル信号により表示モードのアスペクト比を切換えるアス
ペクト比変換回路を備え、 前記検出信号切換回路からの検出信号のマイコン処理に
より、前記入力切換回路で選択された映像信号が水平方
向に時間圧縮された信号であることが識別された時には
横長の画面表示をするようにテレビジョンのアスペクト
表示を切換え、水平方向に表示を伸長して表示するよう
にしたことを特徴とするテレビジョン受信機。A plurality of external video input terminals; an input switching circuit for selectively switching video signals from the plurality of external video input terminals; and a time-compressed signal of each input video signal in a horizontal direction. A detection circuit connected to each of the plurality of external video input terminals to detect an identification signal indicating that there is a detection signal; and a detection signal switch for switching each detection signal from the detection circuit in synchronization with the input selection circuit input selection And a microcomputer that processes the detection signal switched by the detection signal switching circuit; and an aspect ratio conversion circuit that switches an aspect ratio of a display mode by a control signal based on the detection signal processed by the microcomputer. A signal obtained by time-compressing the video signal selected by the input switching circuit in the horizontal direction by microcomputer processing of the detection signal from the switching circuit. A television receiver characterized by switching the aspect display of the television so as to display a horizontally long screen when it is determined that the display is horizontal, and expanding and displaying the display in the horizontal direction.
いて、検出信号切換回路で切換えられた検出信号の処理
を行うマイコン処理手段の代わりに、水平方向 に時間圧
縮された信号を示す識別信号によりテレビジョンのアス
ペクト表示を切換える制御信号を出力する制御回路を配
設し、アスペクト比変換回路を前記制御回路から出力さ
れる制御信号により制御してテレビジョンのアスペクト
表示を切換えるようにしたことを特徴とするテレビジョ
ン受信機。2. The television receiver according to claim 1,
Processing of the detection signal switched by the detection signal switching circuit.
Instead of microcomputer processing means for performing, time pressure in the horizontal direction
The assembling of the television is performed by the identification signal indicating the compressed signal.
A control circuit that outputs a control signal for switching
And an aspect ratio conversion circuit is output from the control circuit.
Controlled by the control signal
A television receiver characterized by switching display .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991102993U JP2599825Y2 (en) | 1991-12-13 | 1991-12-13 | Television receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991102993U JP2599825Y2 (en) | 1991-12-13 | 1991-12-13 | Television receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0553380U JPH0553380U (en) | 1993-07-13 |
| JP2599825Y2 true JP2599825Y2 (en) | 1999-09-20 |
Family
ID=14342224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991102993U Expired - Lifetime JP2599825Y2 (en) | 1991-12-13 | 1991-12-13 | Television receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2599825Y2 (en) |
-
1991
- 1991-12-13 JP JP1991102993U patent/JP2599825Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0553380U (en) | 1993-07-13 |
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