JPH05103279A - Master screen display video device - Google Patents
Master screen display video deviceInfo
- Publication number
- JPH05103279A JPH05103279A JP29074191A JP29074191A JPH05103279A JP H05103279 A JPH05103279 A JP H05103279A JP 29074191 A JP29074191 A JP 29074191A JP 29074191 A JP29074191 A JP 29074191A JP H05103279 A JPH05103279 A JP H05103279A
- Authority
- JP
- Japan
- Prior art keywords
- screen
- parent
- signal
- child
- control circuit
- 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
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は親画面の中に子画面を表
示させるようにした親子画面表示映像装置に係り、特に
親子両画面の表示機能を持たせたテレビジョン受像機や
VTR等の親子画面表示映像装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parent-child screen display image device in which a child screen is displayed in a parent screen, and more particularly to a television receiver or a VTR having a parent-child screen display function. The present invention relates to a parent-child screen display video device.
【0002】[0002]
【従来の技術】近年、テレビジョン受像機の大型化,高
機能化に伴い、親画面の中に子画面を表示させる親子両
画面表示機能(以下「PinP」という)付の映像機器
が開発されている。図3は上記従来の映像機器の構成を
示すものである。図3において、1はアナログ処理部で
あり、該アナログ処理部1は親子画面の映像信号である
入力信号a,bを切り換える切換スイッチ回路2,子画
面のクロマ・同期処理回路3,親画面の同期処理回路4
及び親子画面の映像信号をタイミングをとって切り換え
PinP出力を導出するPinP出力切換回路5で構成
されている。2. Description of the Related Art In recent years, as television receivers have become larger and more sophisticated, video equipment with a parent-child dual-screen display function (hereinafter referred to as "PinP") for displaying a sub-screen within the main screen has been developed. ing. FIG. 3 shows the configuration of the conventional video equipment. In FIG. 3, reference numeral 1 is an analog processing unit, and the analog processing unit 1 is a changeover switch circuit 2 for switching between input signals a and b which are video signals of a parent and child screen, a chroma / synchronization processing circuit 3 of a child screen, and a parent screen. Synchronous processing circuit 4
And a PinP output switching circuit 5 for deriving a PinP output by switching the video signal of the parent-child screen at a timing.
【0003】上記入力信号aと入力信号bはまず切換ス
イッチ回路2に入力され、一方の入力信号aは親画面信
号としてPinP出力切換回路5と親画面同期処理回路
4へ、他方の入力信号bは子画面信号として子画面クロ
マ・同期処理回路3へそれぞれ切換入力される。親画面
同期処理回路4では親画面の垂直同期信号MVDと水平
同期信号MHDが抜き取られ次段のデジタル処理部6に
導かれる。First, the input signal a and the input signal b are input to the changeover switch circuit 2, one input signal a as a parent screen signal to the PinP output switching circuit 5 and the parent screen synchronization processing circuit 4, and the other input signal b. Is switched and input as a small screen signal to the small screen chroma / synchronization processing circuit 3. In the parent screen synchronization processing circuit 4, the vertical synchronization signal MVD and the horizontal synchronization signal MHD of the parent screen are extracted and led to the digital processing unit 6 in the next stage.
【0004】また子画面のクロマ・同期処理回路3では
子画面のクロマ復調及び同期分離が行われ、デジタル処
理部6へは子画面の輝度信号(Y),色差信号(B−Y
・R−Y),垂直同期信号SVD及び水平同期信号SH
Dが入力される。デジタル処理部6では子画面の映像情
報Y,B−Y,R−YをA/D変換回路7でデジタル信
号に変換し、PinPコントロール回路8で一旦V−R
AM10に書き込み、子画面の出力タイミングに合わせ
てPinPコントロール回路8で読み出しており、Pi
nPコントロール回路8に入力されている親子両画面の
同期信号はその書き込み及び読み出しのタイミングを作
るために使われている。Further, in the chroma / synchronization processing circuit 3 for the sub-screen, the chroma demodulation and the sync separation of the sub-screen are performed, and the luminance signal (Y) and the color difference signal (BY) of the sub-screen are sent to the digital processing section 6.
・ RY), vertical sync signal SVD and horizontal sync signal SH
D is input. In the digital processing unit 6, the image information Y, BY, RY of the small screen is converted into a digital signal by the A / D conversion circuit 7, and the PinP control circuit 8 temporarily outputs VR.
It is written in AM10 and read by the PinP control circuit 8 at the output timing of the small screen.
The sync signals for both parent and child screens, which are input to the nP control circuit 8, are used to create the timing of writing and reading.
【0005】V−RAM10に記憶された子画面の映像
信号はPinPコントロール回路8によりD/A変換回
路9に導かれ再びアナログ信号に変換されて上記アナロ
グ処理部1のPinP出力切換回路5に導かれ、親画面
の入力信号aとタイミングをとって合成されて、Pin
P出力として導出される。The picture signal of the sub-picture stored in the V-RAM 10 is guided to the D / A conversion circuit 9 by the PinP control circuit 8 and converted into an analog signal again, and then to the PinP output switching circuit 5 of the analog processing section 1. Then, it is combined with the input signal a of the main screen at a timing, and Pin
It is derived as P output.
【0006】[0006]
【発明が解決しようとする課題】上記従来の装置におい
ては、親画面或いは子画面の映像信号がなくなると、使
用者が手動で切換操作を行わない限り、画面上その部分
の映像がとぎれた形になり、親画面或いは子画面のない
2画面表示状態が続き、好ましくない。In the above-mentioned conventional apparatus, when the video signal of the main screen or the sub-screen disappears, the video of that part on the screen is interrupted unless the user manually performs the switching operation. Then, the two-screen display state without the parent screen or the child screen continues, which is not preferable.
【0007】[0007]
【課題を解決するための手段】本発明は上記の問題を解
決するため、同一画面上に親画面と子画面を表示させる
ようにした親子画面表示映像装置において、親子両画面
の映像信号の有無を検出する映像信号検出手段と、該映
像信号検出手段からの検出信号が親画面のみを検出した
信号である場合は、該信号によって親子両画面の表示機
能を解除し、子画面のみを検出した信号である場合は、
該信号によって親画面と子画面を反転させた後、親子両
画面表示機能を解除し、親子両画面を同時に検出した信
号である場合或いは親子両画面を両方とも同時に検出で
きなかった信号である場合には親子両画面の表示機能を
そのままの状態に保持するように親子画面の表示機能の
制御を行う親子画面制御手段を設けた構成にする。In order to solve the above problems, the present invention provides a parent-child screen display video device in which a parent screen and a child screen are displayed on the same screen, and the presence or absence of video signals of both parent and child screens. In the case where the video signal detecting means for detecting the video signal and the detection signal from the video signal detecting means are signals that detect only the parent screen, the display function of both the parent and child screens is canceled by the signal, and only the child screen is detected. If it is a signal,
After the parent screen and the child screen are reversed by the signal, the parent-child both-screen display function is canceled and the signal detects both the parent-child screen at the same time or both the parent-child screen cannot be detected at the same time. Is configured to include parent-child screen control means for controlling the display function of the parent-child screen so that the display functions of both the parent-child screen are maintained as they are.
【0008】[0008]
【作用】上記の構成によれば親画面の映像信号のみにな
るとPinP表示機能が解除されて画面全面に親画面の
映像が映出され、子画面の映像信号のみになると親画面
と子画面を反転させた後PinP表示機能が解除されて
画面全面に反転前の子画面の映像が映出され、親子両画
面の映像信号が検出されるか、親子両画面の映像信号が
共に検出されない状態になると親子両画面の表示機能は
そのままの状態を保持し、これらが全て自動的に制御さ
れる。With the above configuration, the PinP display function is canceled when only the video signal of the parent screen is displayed, and the video of the parent screen is displayed on the entire screen, and when only the video signal of the child screen is displayed, the parent screen and the child screen are displayed. After reversing, the PinP display function is released and the image of the pre-reversal sub-screen is displayed on the entire screen, and the video signals of both the parent and child screens are detected, or the video signals of both the parent and child screens are not detected Then, the display function of both parent and child screens is kept as it is, and all of them are automatically controlled.
【0009】[0009]
【実施例】図1は本発明の一実施例のブロック図であ
り、上記図3に示す従来例に対応する部分は同一符号を
付し説明を省略する。図1において、10は親画面であ
る入力信号aの同期信号を検出する同期信号検出回路、
11は子画面である入力信号bの同期信号を検出する同
期信号検出回路、12は親子画面の切換等を制御する親
子画面制御回路、13はPinPON/OFF制御回
路、14は親子両画面の入力信号a,bを切り換える入
力切換制御回路である。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram of an embodiment of the present invention. Parts corresponding to those of the conventional example shown in FIG. In FIG. 1, reference numeral 10 is a sync signal detection circuit for detecting a sync signal of an input signal a, which is a main screen,
Reference numeral 11 is a sync signal detection circuit for detecting a sync signal of the input signal b which is a child screen, 12 is a parent-child screen control circuit for controlling switching of parent-child screens, 13 is a PinPON ON / OFF control circuit, and 14 is input for both parent-child screens. The input switching control circuit switches between the signals a and b.
【0010】従って親画面である入力信号aの同期処理
回路4で抜き取られた親画面の垂直同期信号(以下「M
VD」と呼ぶ)と水平同期信号(以下「MHD」と呼
ぶ)は親画面の同期信号検出回路10に入力される。ま
た子画面である入力信号bのクロマ同期処理回路3で同
期分離が行われた子画面の垂直同期信号(以下「SV
D」と呼ぶ)と水平同期信号(以下「SHD」と呼ぶ)
は同期信号検出回路11に入力される。そして上記同期
信号検出回路10及び11では、MVD,MHD及びS
VD,SHDの有無を検出し、その情報は親子画面制御
回路12に入力される。Therefore, the vertical synchronizing signal of the parent screen (hereinafter referred to as "M") extracted by the synchronizing processing circuit 4 for the input signal a which is the parent screen.
A VD ") and a horizontal synchronizing signal (hereinafter referred to as" MHD ") are input to the parent screen synchronizing signal detection circuit 10. In addition, the vertical synchronization signal of the child screen (hereinafter referred to as "SV
"D") and a horizontal sync signal (hereinafter referred to as "SHD")
Is input to the synchronization signal detection circuit 11. In the sync signal detection circuits 10 and 11, the MVD, MHD and S
Presence or absence of VD and SHD is detected, and the information is input to the parent-child screen control circuit 12.
【0011】親子画面制御回路12では上記同期信号検
出回路10,11からの同期信号の検出信号を受けてマ
イコンにより図2に示すフローチャートに従ってPin
PON/OFF制御回路13及び入力切換制御回路14
を制御する。The parent-child screen control circuit 12 receives the detection signal of the synchronization signal from the synchronization signal detection circuits 10 and 11 and the Pin according to the flowchart shown in FIG.
PON / OFF control circuit 13 and input switching control circuit 14
To control.
【0012】即ち、親子画面の入力信号a,bが共にあ
りそれらの同期信号が検出されると親子画面制御回路1
2によりPinPON/OFF制御回路13が制御され
て、PinPはONの状態を保持し入力切換制御回路1
4による入力信号の切り換えは行われず、V−RAM1
0に記憶された子画面の映像信号が読み出されD/A変
換回路9で再びアナログ信号に変換されてPinP出力
切換回路5に導かれ、タイミングを取って親画面と合成
され、PinP出力として導出される。That is, when both the parent-child screen input signals a and b are present and their synchronizing signals are detected, the parent-child screen control circuit 1
The PinPON ON / OFF control circuit 13 is controlled by 2 so that the PinP maintains the ON state and the input switching control circuit 1
The input signal is not switched by 4 and the V-RAM1
The image signal of the child screen stored in 0 is read out, converted again into an analog signal by the D / A conversion circuit 9 and guided to the PinP output switching circuit 5, where it is combined with the parent screen at a proper timing to produce a PinP output. Derived.
【0013】また親画面の入力信号aだけがあり、その
同期信号のみが検出されると親子画面制御回路12によ
りPinPON/OFF制御回路13が制御され、Pi
nPはOFF状態になり、入力切換制御回路14による
入力信号の切り換えは行われず親画面の入力信号aのみ
がPinP出力切換回路5に導かれ、そのまま出力され
る。Further, when there is only the input signal a of the parent screen and only the synchronizing signal thereof is detected, the parent-child screen control circuit 12 controls the PinPON / OFF control circuit 13 to set Pi.
The nP is turned off, the input switching control circuit 14 does not switch the input signal, and only the input signal a of the parent screen is guided to the PinP output switching circuit 5 and output as it is.
【0014】また子画面の入力信号bだけがあり、その
同期信号のみが検出されると親子画面制御回路12によ
り、先ず入力切換制御回路14が切り換わり入力信号
a,bが反転する。その結果入力信号bが親画面信号と
なり、親画面のみがある状態となって入力信号bが出力
される。その後、入力切換制御回路14により、Pin
PON/OFF制御回路が制御されてPinPをOFF
の状態にする。When there is only the input signal b of the child screen and only the synchronizing signal thereof is detected, the parent / child screen control circuit 12 first switches the input switching control circuit 14 to invert the input signals a and b. As a result, the input signal b becomes the main screen signal, and only the main screen exists, and the input signal b is output. After that, the input switching control circuit 14 causes the Pin
PON / OFF control circuit is controlled to turn off PinP
To the state of.
【0015】[0015]
【発明の効果】本発明は以上のような構成であるので、
親子両画面を表示中にいずれかの画面の映像信号がなく
なっても全て自動的に最良の画面表示状態にすることが
でき、使用者の操作を煩わせる必要がなく操作性の向上
を図ることができる。Since the present invention is constructed as described above,
Even when both parent and child screens are displayed, even if there is no video signal on either screen, all can automatically be set to the best screen display state, and there is no need to bother the user to improve operability. You can
【図1】 本発明の一実施例の構成図。FIG. 1 is a configuration diagram of an embodiment of the present invention.
【図2】 本発明の動作説明のためのフローチャート。FIG. 2 is a flowchart for explaining the operation of the present invention.
【図3】 従来例の構成図。FIG. 3 is a configuration diagram of a conventional example.
2 切換スイッチ回路 3 子画面のクロマ・同期処理回路 4 親画面の同期処理回路 5 PinP出力切換回路 10 親画面の同期信号検出回路 11 子画面の同期信号検出回路 12 親子画面制御回路 13 PinPON/OFF制御回路 14 入力切換制御回路 2 Changeover switch circuit 3 Chroma / synchronization processing circuit for child screen 4 Synchronization processing circuit for parent screen 5 PinP output switching circuit 10 Synchronization signal detection circuit for parent screen 11 Synchronization signal detection circuit for child screen 12 Parent-child screen control circuit 13 PinPON / OFF Control circuit 14 Input switching control circuit
Claims (1)
るようにした親子画面表示映像装置において、親子両画
面の映像信号の有無を検出する映像信号検出手段と、該
映像信号検出手段からの検出信号が親画面のみを検出し
た信号である場合は、該信号によって親子両画面の表示
機能を解除し、子画面のみを検出した信号である場合
は、該信号によって親画面と子画面を反転させた後、親
子両画面の表示機能を解除し、親子両画面を同時に検出
した信号である場合或いは親子両画面を両方とも同時に
検出できなかった信号である場合には親子両画面の表示
機能をそのままの状態に保持するように親子画面の表示
機能の制御を行う親子画面制御手段を設けたことを特徴
とする親子画面表示映像装置。1. In a parent-child screen display video device in which a parent screen and a child screen are displayed on the same screen, a video signal detection means for detecting the presence or absence of video signals of both the parent and child screens, and the video signal detection means. When the detection signal of is a signal that detects only the parent screen, the signal cancels the display function of both the parent and child screens, and when the signal detects only the child screen, the signal causes the parent screen and the child screen to be separated. After reversing, the display function of both parent and child screens is released, and if both parent and child screens are detected at the same time or if both parent and child screens cannot be detected at the same time, both parent and child screens display function A parent-child screen display video device, which is provided with a parent-child screen control means for controlling the display function of the parent-child screen so as to keep the same as it is.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29074191A JPH05103279A (en) | 1991-10-08 | 1991-10-08 | Master screen display video device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29074191A JPH05103279A (en) | 1991-10-08 | 1991-10-08 | Master screen display video device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH05103279A true JPH05103279A (en) | 1993-04-23 |
Family
ID=17759928
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP29074191A Pending JPH05103279A (en) | 1991-10-08 | 1991-10-08 | Master screen display video device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH05103279A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011114881A1 (en) * | 2010-03-17 | 2011-09-22 | シャープ株式会社 | Digital broadcast reception device provided with function of displaying multiple screens |
-
1991
- 1991-10-08 JP JP29074191A patent/JPH05103279A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011114881A1 (en) * | 2010-03-17 | 2011-09-22 | シャープ株式会社 | Digital broadcast reception device provided with function of displaying multiple screens |
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