JPH01170285A - Television receiver - Google Patents

Television receiver

Info

Publication number
JPH01170285A
JPH01170285A JP62328617A JP32861787A JPH01170285A JP H01170285 A JPH01170285 A JP H01170285A JP 62328617 A JP62328617 A JP 62328617A JP 32861787 A JP32861787 A JP 32861787A JP H01170285 A JPH01170285 A JP H01170285A
Authority
JP
Japan
Prior art keywords
signal
circuit
definition
changeover switch
video 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
Application number
JP62328617A
Other languages
Japanese (ja)
Inventor
Tomoyuki Nakada
智之 中田
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.)
Fujitsu General Ltd
Original Assignee
Fujitsu General Ltd
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 Fujitsu General Ltd filed Critical Fujitsu General Ltd
Priority to JP62328617A priority Critical patent/JPH01170285A/en
Publication of JPH01170285A publication Critical patent/JPH01170285A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To obtain a television receiver in common use for both the NTSC system and the high vision system by providing a high vision tuner, a decoder converting a signal into each RGB video signal and the 1st-4th changeover switches. CONSTITUTION:When the 1st-8th changeover switches 15, 18a, 23, 25, 27, 32, 34, 37 are thrown to the position of high vision contacts interlockingly, a signal received by the high vision antenna 6 is given to a tuner 7 and an A/D converter circuit 8, from which a video signal and a synchronizing signal are extracted. The RGB signal of the video signal is sent to a CRT 17 via the 1st changeover switch 15 and a video drive circuit 16. The 2nd changeover switch 18a of the synchronizing switching circuit 18 selects the high vision synchronizing signal and the aspect ratio is changed from 4:3 of the NTSC system into 16:9 of the high vision by changing the vertical amplitude, the horizontal oscillation frequency is changed from 15.75kHz into 33.75kHz and the video signal of high vision is reproduced on the CRT.

Description

【発明の詳細な説明】 「産業上の利用分野」 本発明はNTSC方式の映像を受像する受像機を用いて
ハイビジョンの映像も受像することを可能としたテレビ
ジョン受像機に関するものである。
DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a television receiver that can also receive high-definition images using a receiver that receives NTSC video.

「従来の技術」 NTSC方式の、テレビ信号とハイビジョン方式のテレ
ビ信号では、水平同期信号、垂直同期信号。
``Prior art'' NTSC television signals and high-definition television signals require a horizontal synchronization signal and a vertical synchronization signal.

水平走査周波数、アスペクト比などが異なるため。Because the horizontal scanning frequency, aspect ratio, etc. are different.

従来はそれぞれ独立したテレビジョン受像機で受像して
いた。
Previously, images were received using separate television receivers.

「発明が解決しようとする問題点」 NTSC方式とハイビジョン方式とはテレビジョン受像
機の構成に共通回路、共通装置を多く有するので、両方
式に共用できるテレビジョン受像機の実現が望まれてい
た。
``Problems to be solved by the invention'' Since the NTSC system and the high-definition system have many common circuits and common devices in the configuration of television receivers, it has been desired to realize a television receiver that can be used in common with both systems. .

本発明はNTSC方式のテレビ信号は従来通りに再生し
、また、切換スイッチでハイビジョン方式に切換えたと
きにはハイビジョン方式のテレビ信号をも再生できるも
のを得ることを目的とするものである。
It is an object of the present invention to provide a device that can reproduce NTSC television signals in the conventional manner, and can also reproduce high-definition television signals when switched to high-definition television with a changeover switch.

r問題点を解決するための手段」 本発明は上述の目的を達成するためになされたもので、
ハイビジョン信号を受信し、ビデオ信号、音声信号、同
期信号を抽出するハイビジョン用チューナと、このハイ
ビジョン用チューナのビデオ信号出力側に結合され、R
GBの各ビデオ信号に変換するデコーダと、このデコー
ダからのビデオ信号とNTSC方式のビデオ信号を切換
える第1の切換スイッチと、ハイビジョン同期信号とN
TSC同期信号を切換える第2の切換スイッチと。
"Means for Solving the Problems" The present invention has been made to achieve the above-mentioned objects, and
A high-definition tuner that receives a high-definition signal and extracts a video signal, an audio signal, and a synchronization signal;
A decoder that converts each video signal into GB video signals, a first changeover switch that switches between the video signal from this decoder and the NTSC video signal, and a high-definition synchronization signal and N
and a second changeover switch for changing over the TSC synchronization signal.

垂直振幅を変更してアスペクト比を切換える第3の切換
スイッチと、水平走査用の発振周波数を切換える第4の
切換スイッチとを具備してなるものである。
This device includes a third changeover switch that changes the vertical amplitude and changes the aspect ratio, and a fourth changeover switch that changes the oscillation frequency for horizontal scanning.

「作用」 NTSC方式の信号を受像するときには、第1゜第2、
第3.第4の切換スイッチをNTSC側へ切換えると、
従来公知の回路構成によってビデオ信号が再生される。
"Operation" When receiving an NTSC signal, the 1st, 2nd,
Third. When you switch the fourth changeover switch to the NTSC side,
The video signal is reproduced using a conventionally known circuit configuration.

第1、第2、第3、第4の切換スイッチをハイビジョン
側へ切換えると、ハイビジョンの同期信号が入力する。
When the first, second, third, and fourth changeover switches are switched to the high-definition side, a high-definition synchronization signal is input.

また、アスペクト比は垂直振幅を変更することによりN
TSC方式の4=3からハイビジョンの16=9に変更
され、かつ水平発振周波数は15.75KHzから33
.75に11zに変更される。すると、CRTにはハイ
ビジョンのビデオ信号が再生される。
Also, the aspect ratio can be changed to N by changing the vertical amplitude.
The TSC system's 4=3 has been changed to HDTV's 16=9, and the horizontal oscillation frequency has been changed from 15.75KHz to 33KHz.
.. It was changed to 11z in 75. Then, a high-definition video signal is reproduced on the CRT.

「実施例」 以下、本発明の一実施例を図面に基づき説明する。"Example" Hereinafter, one embodiment of the present invention will be described based on the drawings.

(1)はNTSC用アンテナ、(2)はNTSC用チュ
ーナである。このNTSC用チューナ(2)はビデオ信
号処理回路(3)、同期分離回路(4)およびオーディ
オ信号処理回路(5)に結合されている。(6)はハイ
ビジョン用アンテナ、(7)はハイビジョン用チューナ
である。このハイビジ1ン用チューナ(7)はA/D変
換回路(8)を介してデコーダ(9)、オーディオ信号
処理回路(10)、ハイビジョン同期信号出力端子(1
1)に結合され、前記デコーダ(9)はハイビジョン色
再生回路(12)を介してビデオ出力端子(13)に結
合されている。前記デコーダ(9)はいわゆるミューズ
デコーダともいわれ、フレーム間内挿回路、フィールド
間内挿回路、動き領域検出回路、サンプリング周波数変
換回路などで構成されているものである。前記オーディ
オ信号処理回路(5)(10)はスピーカ(14)に結
合されている。
(1) is an NTSC antenna, and (2) is an NTSC tuner. This NTSC tuner (2) is coupled to a video signal processing circuit (3), a sync separation circuit (4) and an audio signal processing circuit (5). (6) is a high-definition antenna, and (7) is a high-definition tuner. This high-visibility tuner (7) is connected to a decoder (9), an audio signal processing circuit (10), and a high-vision synchronization signal output terminal (1) via an A/D conversion circuit (8).
1), said decoder (9) is coupled to a video output terminal (13) via a high-definition color reproduction circuit (12). The decoder (9) is also called a Muse decoder and is composed of an interframe interpolation circuit, an interfield interpolation circuit, a motion area detection circuit, a sampling frequency conversion circuit, and the like. The audio signal processing circuit (5) (10) is coupled to a speaker (14).

前記NTSCビデオ信号処理回路(3)とハイビジョン
色再生回路(12)は第1の切換スイッチ(15)を介
してビデオ信号ドライブ回路(16)、CRT(17)
へ順次結合されている。
The NTSC video signal processing circuit (3) and high-definition color reproduction circuit (12) are connected to a video signal drive circuit (16) and a CRT (17) via a first changeover switch (15).
are sequentially connected to

前記同期分離回路(4)と前記ハイビジョン同期信号出
力端子(11)は、第2の切換スイッチ(18a)を有
する同期信号切換回路(18)に結合されている。
The synchronization separation circuit (4) and the high-definition synchronization signal output terminal (11) are coupled to a synchronization signal switching circuit (18) having a second changeover switch (18a).

この同期信号切換回路(18)の垂直同期信号出力側は
、垂直発振回路(19)、垂直ドライブ回路(20)、
垂直出力回路(21)を介して垂直偏向コイル(22)
に結合され、また、前記垂直出力回路(21)には、ア
スペクト比変更用第3の切換スイッチ(23)を有する
垂直振幅回路(24)と第5の切換スイッチ(25)を
有する垂直位置変更回路(26)が結合されている。
The vertical synchronization signal output side of this synchronization signal switching circuit (18) includes a vertical oscillation circuit (19), a vertical drive circuit (20),
Vertical deflection coil (22) via vertical output circuit (21)
The vertical output circuit (21) also includes a vertical amplitude circuit (24) having a third changeover switch (23) for changing the aspect ratio, and a vertical position changer having a fifth changeover switch (25). A circuit (26) is coupled.

前記同期信号切換回路(18)の水平同期信号出力側は
第4の切換スイッチ(27)を有する水平発振回路(2
8)、水平ドライブ回路(29)、水平出力回路(30
)を介して水平偏向コイル(31)に結合され、また、
前記水平出力回路(30)には第6の切換スイッチ(3
2)を有する水平振幅回路(33)と第7の切換スイッ
チ(34)を有する水平位置変更回路(35)が結合さ
れている。(36)は第8の切換スイッチ(37)を有
する制御部で、この制御部(36)はマスク駆動アクチ
ュエータ(38)の制御をするものである。
The horizontal synchronization signal output side of the synchronization signal switching circuit (18) is connected to a horizontal oscillation circuit (2) having a fourth changeover switch (27).
8), horizontal drive circuit (29), horizontal output circuit (30)
) to the horizontal deflection coil (31), and
The horizontal output circuit (30) is provided with a sixth changeover switch (3
2) and a horizontal position change circuit (35) having a seventh changeover switch (34) are coupled. (36) is a control section having an eighth changeover switch (37), and this control section (36) controls the mask drive actuator (38).

前記垂直振幅回路(24)はプリセット用可変抵抗を具
備し、第3の切換スイッチ(23)の一方の接点がNT
SCの4:3.他方の接点がハイビジョンの16:9の
切換用である。
The vertical amplitude circuit (24) is equipped with a variable resistor for presetting, and one contact of the third changeover switch (23) is set to NT.
SC 4:3. The other contact is for high-definition 16:9 switching.

前記水平発振回路(28)は時定数変更回路からなり、
第4の切換スイッチ(27)の一方の接点がNTSCの
15.75KHz、他方の接点がハイビジョンの33.
75に七の切換用である。
The horizontal oscillation circuit (28) consists of a time constant changing circuit,
One contact of the fourth changeover switch (27) is NTSC 15.75KHz, and the other contact is high-definition 33.
It is for switching between 75 and 7.

前記水平振幅回路(33)はプリセット用可変抵抗を具
備し、第6の切換スイッチ(32)の一方の接点がNT
SCの15.75KHz、他方の接点がハイビジョンの
33.75KHzの切換用である。
The horizontal amplitude circuit (33) is equipped with a variable resistor for presetting, and one contact of the sixth changeover switch (32) is set to NT.
The other contact is for switching 15.75KHz for SC and 33.75KHz for high-definition.

前記マスク駆動アクチュエータ(38)は第3図に示す
ように、CRT (17)の上下に位置した溝(39)
(39)に臨ませて設けられ、この溝(39) (39
)内には移動自在にマスク(40) (40)が設けら
れている。
As shown in FIG. 3, the mask drive actuator (38) has grooves (39) located above and below the CRT (17).
(39), this groove (39) (39)
) are movably provided with masks (40) (40).

以上のような構成における作用を説明する。The operation of the above configuration will be explained.

ハイビジョン信号を受像するには、第1.第2゜第3.
第4、第5、第6、第7及び第8の切換スイッチ(15
) (18a) (23) (25) (27) (3
2) (34) (37)を連動して同時にハイビジョ
ン接点側に切換える。ハイビジョン用アンテナ(6)で
受信した信号はチューナ(7)、A/D変換回路(8)
を介してビデオ信号と同期信号が抽出される。ビデオ信
号はさらにデコーダ(9)、フレーム間内挿、フィール
ド間内挿、動き領域検出などの処理をしてハイビジョン
のビデオ信号に変換され、さらに色再生回路(12)を
介してR,G、B、の各信号が第1の切換スイッチ(1
5)、ビデオドライブ回路(16)を介してCRT (
17)へ送られる。同期切換回路(18)の第2の切換
スイッチ(18a)でハイビジョン同期信号が選択され
、垂直同期信号は垂直発振回路(19)、垂直ドライブ
回路(20)、垂直出力回路(21)を介して垂直偏向
コイル(22)に加えられる。このとき垂直振幅は、第
2図のようにCRT (17)の横縦比を16:9とし
、また、垂直位置変更回路(26)で垂直位置がハイビ
ジョン用に変更される。同時に、水平同期信号は水平発
振回路(28)、水平ドライブ回路(29)、水平出力
回路(30)を介して水平偏向コイル(31)に加えら
れる。このとき、第4の切換スイッチ(27)で水平走
査周波数が15.75KH!から33.75に七に変更
され、また水平振幅、水平位置がそれぞれ第6、第7の
切換スイッチ(32) (34)で切換えられる。さら
に、第8の切換スイッチ(37)で制御部(36)を介
してアクチュエータ(38)を駆動し、マスク(40)
 (4G)はCRT (17)の上下部の一部を被覆し
、露出部分の横縦比が16:9となる。このようにして
、CRT (17)にはハイビジョン信号が映し出され
る。
To receive a high-definition signal, first. 2nd゜3rd.
4th, 5th, 6th, 7th and 8th changeover switch (15
) (18a) (23) (25) (27) (3
2) Interlock (34) and (37) and switch to the high-definition contact side at the same time. The signal received by the high-definition antenna (6) is sent to the tuner (7) and A/D conversion circuit (8).
The video signal and synchronization signal are extracted through. The video signal is further processed by a decoder (9), interpolation between frames, interpolation between fields, motion area detection, etc., and converted into a high-definition video signal. B, each signal is sent to the first changeover switch (1
5), CRT (
17). The high-definition synchronization signal is selected by the second changeover switch (18a) of the synchronization changeover circuit (18), and the vertical synchronization signal is transmitted through the vertical oscillation circuit (19), the vertical drive circuit (20), and the vertical output circuit (21). applied to the vertical deflection coil (22). At this time, the vertical amplitude is set so that the aspect ratio of the CRT (17) is 16:9 as shown in FIG. 2, and the vertical position is changed by the vertical position changing circuit (26) for high-definition. At the same time, a horizontal synchronization signal is applied to the horizontal deflection coil (31) via the horizontal oscillation circuit (28), horizontal drive circuit (29), and horizontal output circuit (30). At this time, the horizontal scanning frequency is set to 15.75KH by the fourth changeover switch (27)! to 33.75 to 7, and the horizontal amplitude and horizontal position are changed by the sixth and seventh changeover switches (32) and (34), respectively. Further, the actuator (38) is driven by the eighth changeover switch (37) via the control unit (36), and the mask (40) is
(4G) covers a portion of the upper and lower portions of the CRT (17), and the exposed portion has an aspect ratio of 16:9. In this way, a high-definition signal is displayed on the CRT (17).

第1ないし第8の切換スイッチ(15)〜(37)をN
TSC側へ切換えると一般的なテレビジョン受像機とな
る。
Turn the first to eighth changeover switches (15) to (37) to N.
When switched to the TSC side, it becomes a general television receiver.

[発明の効果」 本発明は上述のように構成したので、NTSC方式はも
ちろんハイビジョンの映像信号を映し出すことができる
。また、回路構成も大半をNTSC方式をそのまま利用
でき、2台の受像機に比し大巾にコストを下げることが
できる。
[Effects of the Invention] Since the present invention is configured as described above, it is possible to display not only NTSC system but also high-definition video signals. In addition, most of the circuit configuration can use the NTSC system as is, making it possible to significantly reduce costs compared to two receivers.

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

第1図は本発明によるテレビジョン受像機の一実施例を
示すブロック図、第2図はCRTの正面図、第3図はC
RTの側面図である。 (2)・・・NTSC用チューナ、(3)・・・ビデオ
信号処理回路、(4)・・・同期分離回路、(7)・・
・ハイビジョンチューナ、(8)・・・A/D変換回路
、(9)・・・デコーダ、(12)・・・ハイビジョン
色再生回路、(15)・・・第1の切換スイッチ、 (
17)・・・CRT、(18)・・・同期切換回路。 (18a)・・・第2の切換スイッチ、(22)・・・
垂直偏向コイル、(23)・・・第3の切換スイッチ、
(27)・・・第4の切換スイッチ、(31)・・・水
平偏向コイル。 出願人  株式会社富士通ゼネラル
FIG. 1 is a block diagram showing an embodiment of a television receiver according to the present invention, FIG. 2 is a front view of a CRT, and FIG. 3 is a CRT.
It is a side view of RT. (2)...NTSC tuner, (3)...video signal processing circuit, (4)...synchronous separation circuit, (7)...
・High-definition tuner, (8)...A/D conversion circuit, (9)...decoder, (12)...high-definition color reproduction circuit, (15)...first changeover switch, (
17)...CRT, (18)...Synchronization switching circuit. (18a)...Second changeover switch, (22)...
Vertical deflection coil, (23)...third changeover switch,
(27)...Fourth changeover switch, (31)...Horizontal deflection coil. Applicant Fujitsu General Ltd.

Claims (5)

【特許請求の範囲】[Claims] (1)ハイビジョン信号を受信し、ビデオ信号、音声信
号、同期信号を抽出するハイビジョン用チューナと、こ
のハイビジョン用チューナのビデオ信号出力側に結合さ
れ、RGBの各ビデオ信号に変換するデコーダと、この
デコーダからのビデオ信号とNTSC方式のビデオ信号
を切換える第1の切換スイッチと、ハイビジョン同期信
号とNTSC同期信号を切換える第2の切換スイッチと
、垂直振幅を変更してアスペクト比を切換える第3切換
スイッチと、水平走査用の発振周波数を切換える第4の
切換スイッチとを具備してなることを特徴とするテレビ
ジョン受像機。
(1) A high-definition tuner that receives a high-definition signal and extracts the video signal, audio signal, and synchronization signal; a decoder that is connected to the video signal output side of the high-definition tuner and converts it into RGB video signals; A first switch that switches between the video signal from the decoder and the NTSC video signal, a second switch that switches between the high-definition synchronization signal and the NTSC synchronization signal, and a third switch that switches the aspect ratio by changing the vertical amplitude. and a fourth changeover switch that changes the oscillation frequency for horizontal scanning.
(2)第1、第2、第3および第4の切換スイッチは連
動して切換えるものからなる特許請求の範囲第1項記載
のテレビジョン受像機。
(2) The television receiver according to claim 1, wherein the first, second, third, and fourth changeover switches are switched in conjunction with each other.
(3)第3の切換スイッチは垂直振幅回路のプリセット
位置を切換えるものからなる特許請求の範囲第1項記載
のテレビジョン受像機。
(3) The television receiver according to claim 1, wherein the third changeover switch changes the preset position of the vertical amplitude circuit.
(4)第4の切換スイッチは水平発振回路の時定数を変
更するものからなる特許請求の範囲第1項記載のテレビ
ジョン受像機。
(4) The television receiver according to claim 1, wherein the fourth changeover switch changes the time constant of the horizontal oscillation circuit.
(5)CRTはアスペクト比の切換えにより不表示部分
をマスクで被覆するようにしたものからなる特許請求の
範囲第1項記載のテレビジョン受像機。
(5) The television receiver according to claim 1, wherein the CRT is configured so that the non-display portion is covered with a mask by changing the aspect ratio.
JP62328617A 1987-12-25 1987-12-25 Television receiver Pending JPH01170285A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62328617A JPH01170285A (en) 1987-12-25 1987-12-25 Television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62328617A JPH01170285A (en) 1987-12-25 1987-12-25 Television receiver

Publications (1)

Publication Number Publication Date
JPH01170285A true JPH01170285A (en) 1989-07-05

Family

ID=18212271

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62328617A Pending JPH01170285A (en) 1987-12-25 1987-12-25 Television receiver

Country Status (1)

Country Link
JP (1) JPH01170285A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02237280A (en) * 1989-03-10 1990-09-19 Hitachi Ltd Standard/high definition television receiver

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61214872A (en) * 1985-03-20 1986-09-24 Matsushita Electric Ind Co Ltd Color television receiver
JPS61267469A (en) * 1985-05-21 1986-11-27 Canon Inc Output device
JPS62128670A (en) * 1985-11-29 1987-06-10 Canon Inc Picture output device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61214872A (en) * 1985-03-20 1986-09-24 Matsushita Electric Ind Co Ltd Color television receiver
JPS61267469A (en) * 1985-05-21 1986-11-27 Canon Inc Output device
JPS62128670A (en) * 1985-11-29 1987-06-10 Canon Inc Picture output device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02237280A (en) * 1989-03-10 1990-09-19 Hitachi Ltd Standard/high definition television receiver

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