JP2009141747A - Video reception and display system and signal processing apparatus used therefor, and display monitor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To speedily perform OSD display with respect to user operation in a video reception and display system in which a signal processing apparatus and a display monitor are configured separately. <P>SOLUTION: The signal processing apparatus 1 and a display monitor 2 include first and second OSD generation units 14, 25 for generating original OSD images, respectively. In response to operation from a remote controller 4, the first, second OSD generation units 14, 25 generate an OSD image cooperatively with each other, and displays the OSD image on the display monitor 2 while superimposing it on an inputted video image. In a case where an operation signal from the remote controller indicates an image quality change, for example, an image quality selection menu picture is displayed in the first OSD generation unit 14 and when indicating a sound quality change, a volume bar picture is displayed in the second OSD generation unit 25. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a video reception display system in which a signal processing device that processes a received video signal and a display monitor that displays a video are separated.

  In recent years, a flat display panel (display monitor) using a liquid crystal panel, a plasma display lay panel, etc., and a signal processing apparatus (set top box, hereinafter abbreviated as STB) including a tuner for receiving a television signal, etc. TV receivers (video reception and display systems) configured separately from the above are commercialized. Thus, separating the display panel and the STB and configuring them separately is advantageous in order to reduce the thickness of the display panel and increase the degree of freedom of the installation location of the television. In the separated configuration, it is necessary to operate in cooperation with each other without causing any trouble when the two are connected.

  For example, Patent Document 1 discloses a display system that enables any combination of display panels and STBs having different types of display devices. In this document, the display panel transmits identification information (ID information) including information related to the types of devices constituting the display panel and / or the specifications of the display panel to the STB. It is described that the STB receives the ID information transmitted from the display panel, determines the device type of the display panel and / or the specification of the display panel, and controls the operation state of the STB according to the determination result.

JP 2005-086721 A

  In the case of the conventional separation type system including the display system described in Patent Document 1, the STB (signal processing device) and the display panel are related to each other in that the STB is a master for controlling the display panel, and the display panel is the STB. It is in the relationship of the slave controlled from. That is, the STB supplies a video signal and an audio signal to be displayed to the display panel through the cable, and transmits a control signal (control command) related to display through the cable. The control signal includes various adjustment signals such as image quality and volume by a user operation. In addition, a menu screen and an adjustment screen that are necessary when the user performs various operations are generated by an STD OSD (on-screen display) circuit and superimposed on a video signal and supplied to the display panel.

  On the other hand, an operation signal from a user (for example, an operation signal from a remote controller) is often received on the display panel side. In that case, the received operation signal is once sent to the STB through the cable, and the STB must create a control command in accordance with the operation signal and generate a necessary OSD screen and supply it to the display panel. For this reason, a command (control signal) reciprocates between the STB and the display panel, and extra time is required until the processing is completed. That is, the subject that the response with respect to a user's operation deteriorates arises. For example, the display of the adjustment screen is delayed with respect to the volume adjustment operation, and the volume does not switch instantaneously, which gives the user a sense of discomfort or discomfort.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide an OSD display for a user operation in a video reception display system in which a signal processing device and a display panel (display monitor) are separated. Is to do it quickly.

  The present invention relates to a video reception display system in which a signal processing device for processing a received video / audio signal and a display monitor for displaying a video are separated, and the signal processing device and the display monitor transmit a video / audio signal and a control signal. The signal processing device and the display monitor have first and second OSD generation units that generate their own OSD screens, and the first and second OSDs correspond to operations from the remote controller. Each of the generation units generates an OSD screen and displays the OSD screen on the display monitor so as to be superimposed on the input video.

  Here, the display monitor discriminates between the light receiving unit that receives the operation signal from the remote controller and the operation signal received by the light receiving unit, and transmits a command to the signal processing device via the cable. A second command processing unit that instructs the OSD generation unit to generate an OSD screen; The signal processing apparatus includes a first command processing unit that receives a command from the second command processing unit in the display monitor, discriminates the command, and instructs the first OSD generation unit to generate OSD. The first and second command processing units instruct the first and second OSD generation units to generate an OSD screen in cooperation with each other.

  Preferably, when the operation signal from the remote control is an image quality change, the first OSD generation unit displays an image quality selection menu screen, and when the operation signal from the remote control is a volume change, a second OSD generation is performed. Display the volume bar screen.

  The first command processing unit notifies the second command processing unit of the OSD display state of the first OSD generation unit via the cable. When the notified OSD display state is displaying the OSD screen generated by the first OSD generation unit, the second command processing unit stops generation of the OSD screen by the second OSD generation unit . Alternatively, when the notified OSD display state is displaying the OSD screen generated by the first OSD generation unit, the second command processing unit displays the OSD screen generated by the second OSD generation unit. The display position is moved or the shape of the OSD screen to be generated is changed and displayed without overlapping with the OSD screen generated by the first OSD generation unit.

  ADVANTAGE OF THE INVENTION According to this invention, in the video reception display system of a separated type structure, the response with respect to a user's operation is improved, and a user does not feel uncomfortable or uncomfortable.

Embodiments of a video reception display system according to the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of an embodiment of a video reception display system according to the present invention. The system of the present embodiment is a system in which a signal processing device (STB) 1 and a display monitor 2 are separated, and both are connected via a cable 3 of HDMI (High-Definition Multimedia Interface) system, and video Transmit signals and control signals. The user gives various operation instructions from the remote controller 4, and the light receiving unit 28 that receives the instructions is provided on the display monitor 2 side. In the figure, elements related to the OSD display of video are described, and the others are omitted.

  The STB 1 includes a front end 11 that processes a received video / audio signal, a main microcomputer 12 that processes an OSD screen, and a sub-microcomputer 15 that processes an operation command. The front end 11 includes a tuner unit that receives a television broadcast signal input from an antenna, and processes input signals from other composite terminals, HDMI terminals, and RGB terminals. The main microcomputer 12 includes an OSD generation unit 14 that generates a corresponding OSD based on a command from the sub-microcomputer 15, and an OSD superposition unit 13 that superimposes the OSD generated by the OSD generation unit 14 on the video from the front end 11. Have. The video on which the OSD is superimposed by the OSD superimposing unit 13 is transmitted to the display monitor 2 side via the cable 3. The sub-microcomputer 15 includes a command processing unit 16 that determines a command received from the display monitor 2 side via the cable 3 and instructs the OSD generation unit 14 to generate OSD. Further, the command processing unit 16 notifies the OSD display state on the STB 1 side to the display monitor 2 side via the cable 3.

  The display monitor 2 includes a display panel 21 that outputs video, a speaker 22 that outputs audio, a main microcomputer 23 that processes the OSD screen, a sub-microcomputer 26 that processes operation commands, and an operation instruction signal from the remote controller 4. Is provided. The display panel 21 uses a thin display device such as a liquid crystal panel or a plasma display panel. In accordance with an operation instruction from the remote controller 4, the video on the display panel 21 and the audio on the speaker 22 are adjusted, but the adjustment unit is omitted in the figure. The main microcomputer 23 includes an OSD generation unit 25 that generates the corresponding OSD based on the notification from the sub-microcomputer 26, and an OSD superposition unit 24 that superimposes the OSD generated by the OSD generation unit 25 on the video transmitted from the STB 1. Have. The video on which the OSD is superimposed by the OSD superimposing unit 24 is displayed on the display panel 21. The sub-microcomputer 26 discriminates the operation instruction (remote control code) from the remote controller received by the light receiving unit 28, transmits a command corresponding to the remote control code to the STB 1 side via the cable 3, and the OSD in the display monitor 2. A command processing unit 27 that notifies the generation unit 25 is provided. That is, the command processing unit 27 determines the content of the remote control code, transmits a command corresponding to the remote control code to the STB 1, and notifies the OSD generation unit 25 when the command is to be processed by the display monitor 2. At that time, based on the OSD display state notified from the STB 1 side, control is performed so that the two OSD generation units of the STB 1 and the display monitor 2 operate in cooperation.

  The cable 3 employs an HDMI cable that integrally transmits video / audio and control signals between the STB 1 and the display monitor 2. That is, the video / audio signals supplied from the STB 1 to the display monitor 2 are transmitted via TMDS (Transition Minimized Differential Signaling) lines 31 and 32. In addition, a command signal for bidirectional communication between the STB 1 and the display monitor 2 is transmitted via CEC (Consumer Electronics Control) lines 33 and 34. By using the CEC command, it is possible to notify the operation details of the remote controller and the OSD display state more precisely by using a command unique to the device manufacturer. For this purpose, the command processing unit 27 converts the remote control code into a CEC command and transmits it to the command processing unit 16.

  As described above, in the video reception display system of this embodiment, the signal processing device (STB) 1 and the display monitor 2 each independently have an OSD microcomputer (OSD generation unit / superimposition unit, command processing unit) 12, 15, 23, 26. By connecting them, the OSD display functions of both can be combined and operated by operation from one common remote controller 4. Therefore, each operation and each OSD display can be performed with a common remote controller, so that the usability is improved.

  Particularly in this embodiment, the operation signal from the remote controller 4 is received on the display monitor 2 side, and the sub-microcomputer (command processing unit) 26 on the display monitor 2 side discriminates the remote control command and controls both OSD display functions. . That is, the OSD display function is assigned according to the type of command and is operated in cooperation. For example, the OSD display function on the display monitor 2 side is operated for volume adjustment for which a response is required, and the OSD display function on the STB 1 side is operated for image quality adjustment. By operating the OSD display function on the display monitor 2 side, the round-trip time of the command with the STB 1 via the cable 3 can be shortened, and the OSD display for volume adjustment can be performed quickly. Also, when both OSD displays are performed simultaneously, one OSD display is stopped to avoid overlapping display on the screen. Alternatively, by moving the display position of one OSD, it is possible to avoid overlapping display even if they are displayed simultaneously. In this way, it is possible to improve the response to the user's operation and perform efficient display.

  Hereinafter, the processing flow of OSD display in the video reception display system of the present embodiment will be described by taking two cooperative operations as an example.

  FIG. 2 is a diagram illustrating a first example (cooperation operation 1) of the processing flow of OSD display. (A) shows processing on the STB side, and (b) shows processing on the monitor side. In the present embodiment, among the OSD screens, the volume Up / Down operation screen is shared on the monitor side, and the other operation screens are shared on the STB side.

Since the OSD display process is started by receiving an operation instruction from the remote controller on the monitor side, the process on the monitor side (b) will be described first.
In S101, the light receiving unit 28 on the monitor side receives an operation instruction (remote control code) from the remote controller 4. In S102, it is determined whether the STB 1 and the monitor 2 are connected by the cable 3. If it is connected (Yes in S102), the process proceeds to S103. If not connected (No in S102), the monitor 2 performs the OSD display operation alone. That is, the process proceeds to S109, and the command processing unit 27 notifies the OSD generation unit 25 of the remote control code. The OSD generating unit 25 generates a corresponding OSD, and the OSD superimposing unit 24 superimposes the OSD on the video and displays it on the panel 21 in S110.

  In S103, the command processing unit 27 converts the remote control code into a CEC remote control command. In S104, the converted CEC remote control command is transmitted to the STB 1 via the cable 3.

  In S105, it is determined whether or not the received remote control code is the content to be shared and displayed on the monitor side (in this case, the volume Up / Down operation). If the operation is Volume Up / Down, the process proceeds to S106, and the display state notification from the STB side is checked to determine whether any OSD is displayed on the STB side. When the OSD is not performed on the STB side, the process proceeds to S107. If the remote control code is something other than volume up / down operation (No in S105), and if any OSD is displayed on the STB side (Yes in S106), the process proceeds to S108 and received on the monitor side OSD display for the remote control code is not performed.

  In S107, the command processing unit 27 notifies the OSD generating unit 25 of the remote control code, the OSD generating unit 25 generates the volume OSD, and the OSD superimposing unit 24 superimposes the volume OSD on the video. In S110, an image on which the volume OSD is superimposed is displayed on the panel 21.

Next, the process on the STB side in FIG.
In S201, the command processing unit 16 on the STB side receives the CEC remote control command (S104) transmitted from the monitor side. In S202, it is determined whether or not the received remote control command is a content to be shared and displayed on the STB side (in this case, an operation other than the volume Up / Down). If the operation is other than volume up / down, the process proceeds to S203. If the operation is volume Up / Down (No in S202), the process proceeds to S204, and the OSD display for the received remote control command is not performed on the STB side.

  In S <b> 203, the OSD generation unit 14 generates the corresponding OSD, and the OSD superimposition unit 13 superimposes the OSD on the video from the front end 11. In S205, the OSD display state of the STB is notified to the monitor side via the cable 3. In S206, the video is transmitted to the monitor side via the cable 3.

  As described above, the type of operation instruction received from the remote controller is determined, and the OSD is generated and displayed by sharing between the monitor side and the STB side. At that time, if any OSD display is performed on the STB side, a command for non-displaying the OSD is transmitted to the monitor side, and the OSD generated on the monitor side is not displayed.

  FIG. 3 is a diagram illustrating a second example (cooperation operation 2) of the OSD display processing flow. (A) shows processing on the STB side, and (b) shows processing on the monitor side. The entire process is the same as that of the first example shown in FIG. 2, and here, portions different from FIG. 2 will be described.

  In the process on the monitor side of (b), the display state notification from the STB 1 side is checked in S306. At that time, the type and display position of the OSD displayed on the STB side are also examined. When OSD is not performed on the STB side, the process proceeds to S307. In S307, the OSD generation unit 25 generates a volume OSD at a predetermined position (default position) in the screen.

  If any OSD is displayed on the STB side (Yes in S306), the process proceeds to S308. In S308, in consideration of the type and display position of the OSD displayed on the STB side, the OSD generation unit 25 generates a volume OSD by changing the shape so as not to overlap or overlap the OSB of the STB. The OSD display position is predetermined in the main microcomputer 12, for example, corresponding to the display content (type) of the OSD, so that information on the type of OSD that is displayed on the STB side or that is to be displayed, or Information on the display position of the OSD is transmitted to the monitor side. Accordingly, the monitor-side OSD generation unit 25 displays the information on the display position different from the display position of the STB-side OSD based on the information about the type of the STB-side OSD or the display position of the OSD transmitted from the STB (that is, both The OSDs on the monitor side are generated so that the display areas of the OSDs do not overlap each other. If acceptable, both OSDs may overlap slightly. When the OSD displayed on the STB side occupies a large screen, the generation of the volume OSD is stopped.

  In the process on the STB side in (a), the OSD display state of the STB is notified to the monitor side via the cable 3 in S405. At that time, the type of OSD displayed on the STB side and the display position are also notified. This is because it is used for the cooperative operation of two OSD displays.

  As described above, when any OSD display is performed on the STB side, the monitor side operates in cooperation so as to generate the volume OSD by changing the shape so that it does not overlap with the STB OSD. To do. Thereby, it is possible to prevent the user from feeling uncomfortable by overlapping the two OSD displays.

4 and 5 are diagrams showing an example of the OSD screen in this embodiment.
FIG. 4 shows an example in which the volume adjustment OSD generated by the OSD display function on the monitor side is displayed. For example, a volume bar 51 is displayed at a lower default position in the screen 50. When the user performs a volume up / down operation with the remote controller, the volume bar 51 is quickly displayed.

  FIG. 5 shows an example in which the volume adjustment OSD generated on the monitor side and the video setting OSD generated on the STB side are displayed simultaneously in cooperation. For example, this is a case where the user performs an operation for changing the sound volume during the image quality adjustment. In this case, since the video setting menu 52 is displayed on the left side of the screen, when the volume bar is displayed at the default position in FIG. Therefore, the volume bar 51 'is moved to the right area so as to avoid the display area of the video setting menu 52, and the size is reduced. As a result, the two OSD display contents can be displayed simultaneously without any loss.

  Needless to say, the operation contents by the remote controller described in the above embodiment and the OSD display contents thereof are only examples, and can be applied to OSD display for various operations. And how to share an OSD display function in a display monitor and STB should just be suitably selected according to the operation content.

  In the above embodiment, the light receiving unit from the remote control is provided on the display monitor side, but may be provided on the STB side. Then, an operation signal from the remote controller is received on the STB side, and a sub-microcomputer (command processing unit) on the STB side determines the remote controller operation signal and controls both OSD display functions. That is, the OSD display function can be shared according to the type of command and can be operated in cooperation.

  Further, the STB and the display monitor may be connected wirelessly instead of being connected by a cable, and the video / audio signal and the control signal may be transmitted between them. Needless to say, the control similar to that in the above-described embodiment can be performed also when the control signal is transmitted and received wirelessly.

The block diagram which shows the structure of one Example of the image | video reception display system by this invention. The figure which shows the 1st example (cooperation operation | movement 1) of the processing flow of OSD display. The figure which shows the 2nd example (cooperation operation | movement 2) of the processing flow of OSD display. The figure which shows an example of the OSD screen in a present Example. The figure which shows an example (cooperation operation | movement) of the OSD screen in a present Example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Signal processing apparatus (STB), 2 ... Display monitor, 3 ... Cable, 4 ... Remote control, 11 ... Front end, 12 ... Main microcomputer, 13 ... OSD superimposition part, 14 ... OSD production | generation part, 15 ... Sub microcomputer, 16 DESCRIPTION OF SYMBOLS ... Command processing part, 21 ... Display panel, 22 ... Speaker, 23 ... Main microcomputer, 24 ... OSD superimposition part, 25 ... OSD production | generation part, 26 ... Sub microcomputer, 27 ... Command processing part, 28 ... Light-receiving part, 31, 32 ... TMDS line, 33,34 ... CEC line.

Claims (7)

In a video reception display system configured by separating a signal processing device that processes received video and audio signals and a display monitor that displays video,
The signal processing device and the display monitor are connected by a cable for transmitting a video / audio signal and a control signal,
The signal processing device and the display monitor have first and second OSD generation units that generate their own OSD (on-screen display) screens,
In response to an operation from a remote controller, the first and second OSD generation units generate an OSD screen, respectively, and superimpose it on the input video and display it on the display monitor. system. The video reception display system according to claim 1,
The display monitor is
A light receiving unit for receiving an operation signal from the remote control;
The operation signal received by the light receiving unit is discriminated, a command is transmitted to the signal processing device via the cable, and a second OSD generation unit in the display monitor is instructed to generate an OSD screen. 2 command processing units,
The signal processing device includes:
A first command processing unit that receives a command from the second command processing unit in the display monitor, discriminates the command, and instructs the first OSD generation unit to generate an OSD;
The video reception display system, wherein the first and second command processing units respectively instruct the first and second OSD generation units to generate an OSD screen in cooperation with each other. The video reception display system according to claim 2,
When the operation signal from the remote control is an image quality change, an image quality selection menu screen is displayed in the first OSD generation unit,
When the operation signal from the remote controller is a volume change, a video bar display screen is displayed on the second OSD generation unit. The video reception display system according to claim 2,
The first command processing unit notifies the second command processing unit of the OSD display state of the first OSD generation unit via the cable,
The second command processing unit generates the OSD screen by the second OSD generation unit when the notified OSD display state is displaying the OSD screen generated by the first OSD generation unit. An image receiving and displaying system characterized by canceling. The video reception display system according to claim 2,
The first command processing unit notifies the second command processing unit of the OSD display state of the first OSD generation unit via the cable,
When the notified OSD display state is displaying the OSD screen generated by the first OSD generation unit, the second command processing unit displays the OSD generated by the second OSD generation unit. An image receiving display system, wherein a display position of a screen is moved or a shape of an OSD screen to be generated is changed and displayed without overlapping with the OSD screen generated by the first OSD generation unit. A signal processing device used in a video reception display system configured by separating a signal processing device that processes video and audio signals and a display monitor that displays video,
A front-end unit for processing received video and audio signals;
A transmission / reception unit for transmitting a video / audio signal and a control signal to / from the display monitor;
A first OSD generation unit that generates an OSD screen to be superimposed on the video;
A light receiving unit for receiving an operation signal from the remote control;
A first command processing unit that determines an operation signal received by the light receiving unit, instructs the first OSD generation unit to generate an OSD screen, and transmits a command to the display monitor;
The signal processing apparatus, wherein the first OSD generation unit generates an OSD screen in cooperation with a second OSD generation unit in the display monitor. A display monitor used in a video reception display system configured by separating a signal processing device that processes video and audio signals and a display monitor that displays video,
A display panel for displaying images,
A transmission / reception unit for transmitting a video / audio signal and a control signal to / from the signal processing device;
A second OSD generation unit that generates an OSD screen to be superimposed on the video;
A light receiving unit for receiving an operation signal from the remote control;
A second command processing unit that determines an operation signal received by the light receiving unit, instructs the second OSD generation unit to generate an OSD screen, and transmits a command to the signal processing device;
The display monitor, wherein the second OSD generation unit generates an OSD screen in cooperation with the first OSD generation unit in the signal processing device.

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