JPH0457492A - Color television receiver - Google Patents

Color television receiver

Info

Publication number
JPH0457492A
JPH0457492A JP2170919A JP17091990A JPH0457492A JP H0457492 A JPH0457492 A JP H0457492A JP 2170919 A JP2170919 A JP 2170919A JP 17091990 A JP17091990 A JP 17091990A JP H0457492 A JPH0457492 A JP H0457492A
Authority
JP
Japan
Prior art keywords
signal
video input
input terminal
plug
switch
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
JP2170919A
Other languages
Japanese (ja)
Inventor
Atsushi Hibino
敦 日比野
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2170919A priority Critical patent/JPH0457492A/en
Publication of JPH0457492A publication Critical patent/JPH0457492A/en
Pending legal-status Critical Current

Links

Landscapes

  • Color Television Systems (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE:To automatically switch a color system and a frame frequency by providing an S video input terminal having a switching begin one circuit/one contact which is operated while being interlocked with the insersion of a plug, and inserting the plug in S video input terminal. CONSTITUTION:When the VTR of an NTSC system is connected with the S video input terminal 6 by the insersion of the plug, a switch 7 is turned OFF. When a user selects a video input signal 1 in a VTR mode in this state, a discrimination signal 3 goes to H so that a signal processing circuit 4 operates the signal process of the NTSC system. Further, even if the user selects the VTR mode, and the input switching signal 3 is H, a switch 7 is turned ON when the plug is not inserted in the S video input terminal 6. Thus, the discrimination signal 3 goes to L so that the signal processing circuit 4 operates the signal process of a PAL system.

Description

【発明の詳細な説明】 [産業上の利用分野] この発明は、NTSC方式、PAL方式といった異なる
方式のVTRの接続を可能にしたカラーテレビジョン受
像機に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a color television receiver that allows connection of VTRs of different systems such as the NTSC system and the PAL system.

[従来の技術] NTSC方式におけるビデオソフトの世界的な普及によ
り、PAL方式のカラーテレビジョン受像機であっても
、そのビデオ入力端子にNTS C方式のVTRを接続
することができるようになされたカラーテレビジョン受
像機が従来から知られている。
[Prior Art] With the worldwide spread of video software in the NTSC system, it has become possible to connect an NTSC system VTR to the video input terminal of even a PAL system color television receiver. Color television receivers have been known for some time.

第2図は上記のような従来のカラーテレビジョン受像機
の構成を示すブロック図であり、同図において、(1)
は映像入力信号、(2)は判別回路、(3)はこの判別
回路(2)から出力される判別信号、(4)は信号処理
回路である。
FIG. 2 is a block diagram showing the configuration of a conventional color television receiver as described above, and in the same figure, (1)
2 is a video input signal, (2) is a discrimination circuit, (3) is a discrimination signal output from this discrimination circuit (2), and (4) is a signal processing circuit.

つぎに、上記構成の動作について説明する。Next, the operation of the above configuration will be explained.

映像入力信号(1)は判別回路(2)によりPAL方式
かNTSC方式かが判別されて、その判別信号(3)が
出力される。ここで、判別信号(3)としては、PAL
方式で「L」を、NTSC方式でr)(Jを出力するも
のとする。
A determination circuit (2) determines whether the video input signal (1) is PAL or NTSC, and outputs a determination signal (3). Here, as the discrimination signal (3), PAL
It is assumed that the system outputs "L" and the NTSC system outputs "r" (J).

信号処理回路(0はPAL方式およびNTS C方式の
いずれの方式の信号処理も可能なもので、例えば、上記
判別信号(3)が「L」ならばPAL方式、rHJなら
ばNTSC方式といったそれぞれの方式に対応したクロ
マ信号処理やフレーム周波数の切り替えなどの信号処理
をおこなう。
Signal processing circuit (0 is capable of signal processing of both PAL system and NTSC system. For example, if the above discrimination signal (3) is "L", it is possible to process signals of PAL system, rHJ is NTSC system, etc.) Performs signal processing such as chroma signal processing and frame frequency switching that corresponds to the system.

また、第3図は第2図における判別回路(2)の代わり
に外部切替スイッチ(5)を設けた従来の他のカラーテ
レビジョン受像機の構成を示す、第3図中の(10)は
抵抗である。
Furthermore, FIG. 3 shows the configuration of another conventional color television receiver in which an external changeover switch (5) is provided in place of the discrimination circuit (2) in FIG. 2. (10) in FIG. It is resistance.

この第3図の構成のものにおいては、スイー、チ(5)
のOFF状態でrHJ、ON状態で「L」の判別信号(
3)を出力して、第2図と同様な処理をおこなう、すな
わち、使用者が接続するVTRに対応して、PAL方式
ならば外部切替スイッチ(5)をON、NTSC方式な
らば外部切替スイッチ(5)をOFFにすることにより
、両方式のVTRを接続することができる。
In the configuration shown in Figure 3, Sweet, Chi (5)
The discrimination signal is rHJ in the OFF state and “L” in the ON state (
3) and performs the same process as shown in Figure 2. In other words, depending on the VTR connected by the user, turn on the external changeover switch (5) for PAL system, and turn on the external changeover switch (5) for NTSC system. By turning off (5), both types of VTR can be connected.

[発明が解決しようとする課題] 従来のカラーテレビジョン受像機は以上のように構成さ
れているので、第2図に示すものにおいては、判別回路
(2)として、通常、方式判別のための専用ICが必要
となり、コスト的に高価なものになる。
[Problems to be Solved by the Invention] Since the conventional color television receiver is configured as described above, in the one shown in FIG. A dedicated IC is required, making the cost expensive.

また、低廉化のために判別回路を省略した第3図のもの
においては、外部切替スイッチ(5)を必要とし、操作
が煩わしくなるなどの欠点があった。
Furthermore, in the one shown in FIG. 3 in which the discrimination circuit is omitted in order to reduce the cost, an external changeover switch (5) is required, which has the disadvantage of making the operation cumbersome.

この発明は上記のような問題点を解消するためになされ
たもので、判別回路や外部切替スイッチを用いることな
く、ごく簡単な操作をおこなうことで、異なる方式のV
TRの接続切替えをおこなうことができるカラーテレビ
ジョン受像機を提供することを目的とする。
This invention was made to solve the above-mentioned problems, and it is possible to switch between different types of V
An object of the present invention is to provide a color television receiver capable of switching TR connections.

[課題を解決するための手段] この発明に係るカラーテレビジョン受像機は、プラグの
差し込みに連動した1回路1接点のスイッチを有するS
映像入力端子を備えたことを特徴とする。
[Means for Solving the Problems] A color television receiver according to the present invention has an S having a one-circuit one-contact switch that is linked to the insertion of a plug.
It is characterized by being equipped with a video input terminal.

[作用] この発明によれば、S映像入力端子にプラグを差し込む
ことにより、このプラグの差し込みに連動するスイッチ
を介してカラー方式およびフレーム周波数の切り替えが
自動的におこなわれる。
[Function] According to the present invention, by inserting a plug into the S video input terminal, the color system and frame frequency are automatically switched via the switch that is linked to the insertion of the plug.

[発明の実施例〕 以下、この発明の一実施例を図面にもとづいて説明する
[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described based on the drawings.

第1図はこの発明の一実施例によるカラーテレビジョン
受像機の構成を示すブロック図であり、同図において、
従来例と同一もしくは相当部分には、同一の符号を付し
て、それらの説明を省略する。
FIG. 1 is a block diagram showing the configuration of a color television receiver according to an embodiment of the present invention.
The same or corresponding parts as in the conventional example are given the same reference numerals, and their explanation will be omitted.

第1図において、(6)はS映像入力端子、(7)はこ
のS映像入力端子(6)へのプラグの差し込みに連動し
たスイッチであり、この例ではプラグを差し込んでいな
いとき、スイッチ(7)がON状態、プラグを差し込ん
だときにOFF状態となる構成を有している。
In Fig. 1, (6) is an S video input terminal, and (7) is a switch that is linked to the insertion of a plug into this S video input terminal (6). In this example, when no plug is inserted, the switch ( 7) is in the ON state, and is in the OFF state when the plug is inserted.

(8)は使用者がリモコンなどでテレビやVTRなどの
モード選択をおこなったとき、マイコンなどから出力さ
れる入力切替信号であって、S映像入力端子(8)を選
択したとき「H」、それ以外のとき「L」の判別信号(
3)を出力する。(9)はダイオード、(10)は抵抗
である。
(8) is an input switching signal output from a microcomputer, etc. when the user selects a mode for TV, VTR, etc. with a remote control, etc. When the S video input terminal (8) is selected, "H", Otherwise, the “L” discrimination signal (
3) Output. (9) is a diode, and (10) is a resistor.

つぎに、上記構成の動作につい説明する。Next, the operation of the above configuration will be explained.

S映像入力端子(6)にNTSC方式のVTRをプラグ
の差し込みにより接続すると、スイッチ(7)がOFF
となり、この状態で使用者が映像入力信号(1)をVT
Rモードに選択すると、判別信号(3)が「H」となる
ので、信号処理回路(0はNTSC方式の信号処理をお
こなう。
When an NTSC VTR is connected to the S video input terminal (6) by plugging it in, the switch (7) turns OFF.
In this state, the user inputs the video input signal (1) to VT.
When the R mode is selected, the discrimination signal (3) becomes "H", so the signal processing circuit (0 performs NTSC signal processing).

また、使用者がVTRモードを選択し、入力切替信号(
3)がrHJであっても、S映像入力端子(6)にプラ
グを差し込んでいないときはスイッチ(7)がONとな
り、判別信号(3)が「L」となるので、信号処理回路
(4)はPAL方式の信号処理をおこなう。
Also, when the user selects the VTR mode, the input switching signal (
Even if 3) is rHJ, when the plug is not inserted into the S video input terminal (6), the switch (7) is turned on and the discrimination signal (3) becomes "L", so the signal processing circuit (4) ) performs PAL signal processing.

逆に、S映像入力端子(6)にプラグを差し込んだまま
、つまりスイッチ(7)がOFFの状態で、使用者がV
TRモード以外の、たとえばテレビモードや別のVTR
モードを選択していると、入力切替信号(8)が「L」
で、判別信号(3)も「L」となり、信号処理回路(4
)はPAL方式の信号処理をおこなう。
Conversely, if the user connects the plug to the S video input terminal (6), that is, with the switch (7) turned OFF,
Other than TR mode, such as TV mode or another VTR
When the mode is selected, the input switching signal (8) is “L”
Then, the discrimination signal (3) also becomes "L", and the signal processing circuit (4)
) performs PAL signal processing.

すなわち、上記S映像入力端子(6)をNTSC方式専
用とすることで、映像入力信号のPAL方式、NTSC
方式の判別をおこなうものである。
That is, by dedicating the S video input terminal (6) to the NTSC system, the video input signal can be converted to PAL system, NTSC system, etc.
This is to determine the method.

[発明の効果] 以上のように、この発明によれば、S映像入力端子にN
TSC方式のVTRを接続することで、判別回路や外部
切替スイッチを設けることなく、PAL方式かNTS 
C方式かの切り替えを自動的に行なうことができ、異な
る方式のVTRの接続が可能なカラーテレビジョン受像
機を安価に構成できるとともに、その操作も容易なもの
にできるという効果を奏する。
[Effects of the Invention] As described above, according to the present invention, the N
By connecting a TSC type VTR, you can select between PAL type or NTS type without installing a discrimination circuit or external changeover switch.
This has the effect that a color television receiver that can automatically switch between C and C formats and that can connect VTRs of different formats can be constructed at low cost and that its operation can be made easy.

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

第1図はこの発明の一実施例によるカラーテレビジョン
受像機の構成を示すブロック図、第2図および第3図は
それぞれ従来のカラーテレビジョン受像機の構成を示す
ブロック図である。 (1)・・・映像入力信号、(3)・・・判別信号、(
4)・・・信号処理回路、(6)・・・S映像入力端子
、(7)・・・スイッチ、(8)・・・入力切替信号。 なお、図中の同一符合は同一または相当部分を示す。
FIG. 1 is a block diagram showing the configuration of a color television receiver according to an embodiment of the present invention, and FIGS. 2 and 3 are block diagrams each showing the configuration of a conventional color television receiver. (1)...Video input signal, (3)...Discrimination signal, (
4)...signal processing circuit, (6)...S video input terminal, (7)...switch, (8)...input switching signal. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

【特許請求の範囲】[Claims] (1)プラグの差し込みに連動した1回路1接点のスイ
ッチを有するS映像入力端子を備え、上記スイッチによ
ってカラー方式およびフレーム周波数の切り替えをおこ
なうように構成したことを特徴とするカラーテレビジョ
ン受像機。
(1) A color television receiver characterized in that it is equipped with an S video input terminal having a switch of one circuit and one contact that is linked to the insertion of a plug, and that the switch is used to switch the color system and frame frequency. .
JP2170919A 1990-06-26 1990-06-26 Color television receiver Pending JPH0457492A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2170919A JPH0457492A (en) 1990-06-26 1990-06-26 Color television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2170919A JPH0457492A (en) 1990-06-26 1990-06-26 Color television receiver

Publications (1)

Publication Number Publication Date
JPH0457492A true JPH0457492A (en) 1992-02-25

Family

ID=15913787

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2170919A Pending JPH0457492A (en) 1990-06-26 1990-06-26 Color television receiver

Country Status (1)

Country Link
JP (1) JPH0457492A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4605987B2 (en) * 2000-08-28 2011-01-05 セイコーエプソン株式会社 Projector, image processing method, and information storage medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4605987B2 (en) * 2000-08-28 2011-01-05 セイコーエプソン株式会社 Projector, image processing method, and information storage medium
JP2012078837A (en) * 2000-08-28 2012-04-19 Seiko Epson Corp Image display device and image processing method

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