JP2007074384A - Video output device and system therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video output device and system which enable each user to operate a picture which the user is viewing, without disturbing the other users when a plurality of videos are viewed by a plurality of users, respectively. <P>SOLUTION: A broadcasting reception device 30 displays a plurality of videos from a plurality of tuners, on one display by screen division. When a one-picture key is operated, a remote control transmitter 17 instructs the broadcasting reception device 30 to set a one-picture display mode and adopts a first remote control code. When a two-picture key is operated, the remote control transmitter 17 instructs the broadcasting reception device to set a two-picture display mode and adopts a second remote control code. The broadcasting reception device 30 performs an operation for one picture in response to reception of a signal of the first remote control code and performs an operation for the other picture in response to reception of a signal of the second remote control code. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a video output device and a video output system, and is used as, for example, a broadcast receiving device.

  There has been proposed a broadcast receiving apparatus that includes a plurality of tuners and a two-screen synthesis circuit, performs scale conversion and two-screen synthesis of images received by two tuners, and displays them on a single monitor (see Patent Document 1). .

In a broadcast receiving apparatus that can perform such two-screen composition, for example, the operation is performed by the following two-screen operation method. FIG. 5 is a state transition diagram for explaining the two-screen operation method and an explanatory diagram showing the remote control transmitter 21 used for this operation. The remote control transmitter 21 includes a two-screen key and an operation switching key. The two-screen key is a key for instructing start and end of two screens. The operation switching key is a key for instructing switching of a selection screen (screen to be operated: operation effective screen). The cursor operation in the selection screen can be performed using the up / down / left / right decision keys.
Japanese Patent Laid-Open No. 11-252474

  By the way, viewing the broadcast in the above-described two-screen display is mainly performed when a plurality of viewers want to watch different programs. However, in the above-described two-screen operation method, each screen must be operated after switching the selection screen using the remote control transmitter 21, and each viewer becomes an obstacle to other viewers. I was dissatisfied.

  In view of the above circumstances, the present invention provides a video output device and a video output capable of operating a screen viewed by each of a plurality of users without being disturbed by other users The purpose is to provide a system.

  In order to solve the above problems, the video output device of the present invention displays a plurality of videos from a plurality of video sources on a single display by dividing the screen or outputs each video to a plurality of displays. And a plurality of remote control codes can be interpreted. In the one-screen display mode, the same processing is executed when a specific remote control code or a command signal of any remote control code is received. The remote control code signal is processed as a command signal for each video screen.

  With the above configuration, each video screen can be operated with different remote control codes without performing the operation of switching the selection screen as in the conventional case. You can control the screen that each user sees without disturbing the user.

  The video output system of the present invention is a video output system comprising the video output device having the above-described configuration and a remote controller, wherein the remote controller is configured to output command signals of different remote control codes. Features (hereinafter referred to as the first system in this section).

  In the first system, the remote controller may be provided with a switch for switching a remote control code.

  In the first system, the remote controller includes a key for instructing the video output device to switch between the single-screen display mode and the multi-screen display mode, and the remote controller code is switched when the key is operated. It may be. In this configuration, in addition to the remote controller, a second remote controller that cannot change the remote control code may be provided.

  According to the present invention, when a plurality of videos are viewed by a plurality of users, it is possible to operate a screen that each user sees without disturbing other users.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the broadcast receiving apparatus 30 of this embodiment includes three tuners 1A, 1B, and 1C. The three tuners 1A, 1B, and 1C are analog tuners, digital tuners, or a mixture thereof. The analog tuner receives an analog broadcast wave having a selected frequency and demodulates it to generate a video signal. Further, the digital tuner includes a demodulation circuit, a deinterleave circuit, an error correction circuit, and the like, thereby demodulating the selected digital modulation signal and outputting a transport stream. Further, the digital tuner includes a demultiplexer (DEMUX) (not shown). The demultiplexer separates the transport stream into an MPEG2 (Moving Picture Experts Group 2) video stream, an audio stream, and PSI / SI (Program Specific Information / Service Information). The demultiplexer supplies a video stream and an audio stream to an AV decoder (not shown), and supplies program information included in the PSI / SI to the system controller 15. The AV decoder generates a video signal and an audio signal.

  The signal switch 2A takes out the video signal V1 and the audio signal A1 output from the operating tuner among the three tuners 1A, 1B, and 1C. The signal switcher 2B selects the video signal V2 and the audio signal A2 output from the other operating tuner in the two-screen mode. Switching in these signal switches 2A and 2B is controlled by the system controller 15.

  The selector 3 outputs the audio signal A1 in the normal mode, and selects and outputs one of the audio signal A1 and the audio signal A2 in the two-screen mode. Voice selection in the selector 3 is controlled by the system controller 15.

  The two-screen synthesis circuit 4 outputs the video signal V1 in the normal mode, while synthesizing and outputting the video signal V1 and the video signal V2 in the two-screen mode. For example, when the two-screen synthesis circuit 4 receives a two-screen execution command from the system controller 15, the two-screen synthesis circuit 4 synthesizes the two video signals V 1 and V 2 using the timing signal from the deflection circuit 7 as a signal indicating the boundary of screen division. The two-screen composition process itself may be any process.

  The video processing circuit 5 superimposes the additional video from the OSD circuit 16 on the one-screen video signal in the normal mode or the two-screen video signal in the two-screen mode. The OSD circuit 16 is a circuit that generates video information based on character information and color information instructed to be output from the system controller 15. The OSD circuit 16 uses the OSD circuit 16 to display EPG (Electronic Program Guide) based on program information, data broadcast display, Menu screen display, message display, etc. can be performed.

  The video output circuit 6 converts the video signal output from the video processing circuit 5 into, for example, an RGB signal and supplies it to a monitor 9 (in this example, a CRT is used). The monitor 9 is driven by the RGB signals and signals from the deflection circuit 7 and the high voltage circuit 8. The video signal output from the video processing circuit 5 is supplied to the video output terminal 10.

  The sound processing circuit 11 receives the sound signal output from the selector 3 and generates, for example, a right (R) sound analog signal and a left (L) sound analog signal. The audio output circuit 12 includes an amplifier and drives the speaker 13 with the audio signal. The audio signal output from the audio processing circuit 11 is supplied to the audio output terminal 14.

  In a memory (not shown) (RAM, EEPROM, flash memory, ROM, etc.), contents set by the user on the menu screen (setting information) are stored in addition to EPG program information.

  The remote control transmitter (remote controller) 17 is a transmitter for sending a command to the broadcast receiving apparatus 30. The remote control transmitter 17 includes various keys as shown in FIG. When a key provided on the remote control transmitter 17 is operated, signal light (remote control signal) indicating a command corresponding to the key is transmitted from a light emitting unit (not shown). The remote control transmitter 17 includes two remote control codes as remote control codes. Further, the remote control transmitter 17 includes a 1-screen key and a 2-screen key. When the one-screen key is operated, the one-screen display mode is instructed to the broadcast receiving device 30, and the first remote control code is adopted from the two remote control codes. On the other hand, when the two-screen key is operated, the broadcast receiving device 30 is commanded to the two-screen display mode, and the second remote control code is adopted among the two remote control codes. Note that the command signals in the 1-screen key and the 2-screen key may not differ between the first remote control code and the second remote control code. In the sale of the broadcast receiving apparatus 30, a main remote control transmitter having a large number of keys and a sub remote control transmitter having a small number of keys may be attached. In this case, the main remote control transmitter is the remote control transmitter 17. The sub remote control transmitter may be configured to include only the first remote control code.

  The remote control light receiver 18 receives the signal light output when the key of the remote control transmitter 17 (or the sub remote control transmitter) is operated, converts it into an electric signal, and gives it to the system controller 15. . The system controller 15 performs code analysis based on the remote control signal, and gives, for example, a channel selection command, a cursor movement command, and the like to the tuner and the OSD circuit.

  Here, in the one-screen display mode, the system controller 15 executes the same processing when receiving a command signal of the first remote control code. For example, when the “4” key is pressed in the remote control transmitter 17 (when a command signal by the first remote control code is received), the tuner 1A is instructed to select 4ch, and similarly, Even when the “4” key of the sub remote control transmitter is pressed (when a command signal by the first remote control code is received), the tuner 1A is instructed to select 4ch. In the one-screen display mode, the same processing may be executed when a command signal by any remote control code is received.

  On the other hand, in the two-screen display mode, the system controller 15 receives different command signals for both the first remote control code and the second remote control code, but executes different processes. For example, when the “4” key is pressed in the remote control transmitter 17 (when a command signal by the second remote control code is received), the tuner 1A is instructed to select 4ch, and similarly, When the “4” key of the sub-remote control transmitter is pressed (when a command signal is received from the first remote control code), a command for selecting the 4ch channel is given to, for example, the tuner 1B operating for the other screen. To do.

  That is, for example, if two users are watching a program they want to watch in the two-screen display mode, one user may perform volume adjustment, cursor operation, etc. using the remote control transmitter 17, Similarly, the other user has only to adjust the volume and operate the cursor by using the sub-remote control transmitter, and can enjoy the program he / she wants without interfering with each other.

  When the broadcast receiver 30 cannot receive the command signal even though the two-screen key of the remote control transmitter 17 is pressed, the remote control transmitter 17 adopts the second remote control code, but broadcasts. The receiving device 30 is in a state where it remains in the one-screen display mode. In such a case, the user will notice that the broadcast receiving device 30 remains in the single screen display mode and will press the two screen key several times. The broadcast receiving apparatus 30 enters the two-screen display mode when it detects that the two-screen key is pressed. Here, when the remote control transmitter 17 adopts the second remote control code, but the broadcast receiving device 30 remains in the one-screen display mode, when the broadcast receiving device 30 receives a command signal based on which remote control code If the same processing is executed, the broadcast receiver 30 can be operated by operating the remote control transmitter 17.

  When the broadcast receiver 30 cannot receive the command signal even though the one-screen key of the remote control transmitter 17 is pressed, the remote control transmitter 17 adopts the first remote control code, but the broadcast signal is not received. The receiving device 30 is in a state where it remains in the two-screen display mode. Even in such a case, the user will notice that the broadcast receiving device 30 remains in the two-screen display mode, and will press the one-screen key several times. The broadcast receiving apparatus 30 enters the one-screen display mode when it detects the pressing of the one-screen key. Here, when the remote control transmitter 17 adopts the first remote control code, but the broadcast receiving device 30 remains in the two-screen display mode, the other is viewing by operating the remote control transmitter 17. The screen is manipulated. In such a case, the one-screen key is pressed again to end the two-screen display mode, or the two-screen key may be pressed if it is desired to continue the two-screen display mode.

  It should be noted that only the two-screen key is provided without providing the one-screen key, and the one-screen display mode and the two-screen display mode may be switched by this key operation, but the broadcast receiving device 30 receives this switching command signal. If it is not possible, a state in which the state of the remote control code on the remote control transmitter 17 side and the screen mode of the broadcast receiving device 30 do not coincide easily occurs. However, for example, the remote control transmitter 17 includes a signal receiving unit, and the broadcast receiving device 30 outputs a signal for notifying the screen mode, and the remote control transmitter 17 that receives the signal by the signal receiving unit receives the signal from the broadcast receiving device 30. If the screen mode can be known, the inconsistent state can be eliminated.

  FIG. 3 is a plan view showing the remote control transmitter 17 '. The remote control transmitter 17 'includes a two-screen key and a slide switch, and does not include a one-screen key. The signal sent when the two-screen key is pressed becomes a command signal for switching between the one-screen display mode and the two-screen display mode. That is, the broadcast receiving apparatus 30 switches between the one-screen display mode and the two-screen display mode every time it detects that the two-screen key is pressed. The remote control transmitter 17 'employs a first remote control code when the slide switch is in the left position, and employs a second remote control code when the slide switch is in the right position. By using such a remote control transmitter 17 ', it is possible to switch the operation for each screen image with the slide switch without performing a screen switching operation. That is, for example, if two users are watching a program they want to watch in the two-screen display mode, one user can adjust the volume with the slide switch in the left position in the remote control transmitter 17 '. It is only necessary to perform a cursor operation or the like, and similarly, the other user may perform volume adjustment or cursor operation while the slide switch is set to the right position in the remote control transmitter 17 ′, so that the other users do not disturb each other. In addition, the user can enjoy the program he / she desires (without causing on-screen changes such as display / non-display of the highlight indicating the selection screen). The slide switch of the remote control transmitter 17 ′ is labeled “left and right”, but may be labeled “monitor 1 monitor 2” (see the broadcast receiving device 31 described later). Further, not only the slide switch that can hold the operation position state, but also a switch that cannot hold the operation position state may be used. In this case, for example, a liquid crystal display unit is provided in the remote control transmitter 17, and a display such as “for left” and “for right” is displayed on the liquid crystal display unit, or one of the displays such as “for left” and “for right” printed. It is preferable to use a technique such as displaying a dot using the liquid crystal display unit in the vicinity.

  FIG. 4 is a block diagram showing a broadcast receiving apparatus 31 which is another embodiment. In addition, in order to avoid redundancy due to duplication of explanation, elements common to the broadcast receiving apparatus 30 are denoted by common reference numerals and explanation thereof is omitted. The broadcast receiver 31 outputs two videos from two video sources to a video output terminal for the monitor 1 and a video output terminal for the monitor 2, respectively. The video signal V1 selected by the signal switch 2A is supplied to the video processing circuit 5A. The video processing circuit 5A superimposes the video information (OSD signal 1) from the first OSD circuit 16A on the video signal V1. The output of the video processing circuit 5A is also supplied to the terminal 10A. The video signal V2 selected by the signal switch 2B is supplied to the video processing circuit 5B. The video processing circuit 5B superimposes the video information (OSD signal 2) from the second OSD circuit 16B on the video signal V2. The output of the video processing circuit 5B is supplied to the terminal 10B.

  The audio signal A1 selected by the signal switch 2A is supplied to the audio processing circuit 11A. The output of the audio processing circuit 11A is also supplied to the terminal 14A. The audio signal A2 selected by the signal switch 2B is supplied to the audio processing circuit 11B. The output of the audio processing circuit 11B is supplied to the terminal 14B.

  With the configuration of the broadcast receiving device 31, for example, different videos are displayed on the monitor 9 and other monitors connected to the terminal 10B, and the two users each have their own programs to be viewed separately. You can see it on the monitor. That is, the broadcast receiving apparatus 30 described above executes the two-screen display mode as the multiple video display mode, while the broadcast receiving apparatus 31 executes the two-video independent display mode as the multiple video display mode.

  When the system controller 15 in the broadcast receiving apparatus 31 receives a cursor movement command, an EPG display command, or the like based on the second remote control code in the multiple video display mode, it sends video information (OSD signal 1) to the first OSD circuit 16A. Generate. In the multiple video display mode, when receiving a cursor movement command, an EPG display command, or the like based on the first remote control code, the second OSD circuit 16B is caused to generate video information (OSD signal 2).

  Although a tuner is shown as a plurality of video sources, it is also possible to perform two-screen synthesis and two-video output of an input video from an external device (for example, a DVD player) and a video from the tuner. Of course, it is also possible to perform two-screen composition and two-video output for input video from a plurality of external devices. Not only two screens (two video images) but also three screen composition (three video outputs) can be performed, for example. In this case, the remote control transmitter 17 is provided with one screen key, two screen keys, and three screen keys, and three types of remote control codes are prepared. Two sub remote control transmitters may be prepared, one transmitting a signal using the first remote control code and the other transmitting a signal using the second remote control code.

It is the block diagram which showed the broadcast receiver of embodiment of this invention. It is explanatory drawing which showed the remote control transmitter. It is explanatory drawing which showed the other remote control transmitter. It is the block diagram which showed the broadcast receiver of other embodiment of this invention. It is the state transition diagram explaining the 2 screen operation method of a conventional system, and explanatory drawing which showed the remote control transmitter used for this operation.

Explanation of symbols

1A, 1B, 1C Tuner 2A, 2B Signal switcher 3 Selector 4 2-screen composition circuit 15 System controller 16 OSD circuit

Claims (5)

Multiple video output means that can display multiple videos from multiple video sources on one display by splitting the screen or output to multiple displays respectively, and interpretation of multiple remote control codes is possible, one screen display In the mode, the same processing is executed when a specific remote control code or a command signal of any remote control code is received, while in the multiple video display mode, processing is performed on the assumption that each remote control code signal is a command signal for each video screen. And a video output device. 2. A video output system comprising the video output device according to claim 1 and a remote controller, wherein the remote controller is configured to output a command signal of a different remote control code. The video output system according to claim 2, wherein the remote controller is provided with a switch for switching a remote control code. 3. The video output system according to claim 2, wherein the remote controller includes a key for instructing the video output device to switch between the single-screen display mode and the multi-screen display mode, and the key is operated. A video output system characterized by switching a remote control code. 5. The video output system according to claim 4, further comprising a second remote controller that cannot change a remote control code in addition to the remote controller.

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