WO2011013466A1 - 表示装置、表示システム、表示方法およびプログラム - Google Patents
表示装置、表示システム、表示方法およびプログラム Download PDFInfo
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- WO2011013466A1 WO2011013466A1 PCT/JP2010/060542 JP2010060542W WO2011013466A1 WO 2011013466 A1 WO2011013466 A1 WO 2011013466A1 JP 2010060542 W JP2010060542 W JP 2010060542W WO 2011013466 A1 WO2011013466 A1 WO 2011013466A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
-
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
- H04N21/4316—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations for displaying supplemental content in a region of the screen, e.g. an advertisement in a separate window
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- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
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- G09G2370/12—Use of DVI or HDMI protocol in interfaces along the display data pipeline
Definitions
- the present invention relates to a display device, a display system, a display method, and a program.
- IPTV Internet Protocol Television
- CATV systems are known that can provide interactive services in addition to video distribution services by using interactive networks.
- IMS IP Multimedia Subsystem
- the IPTV system integrates interactive services such as instant messaging function, chat function, and presence function with video distribution services such as IP multicast and VOD (Video On Demand). Can be provided.
- the display device included in the IPTV system displays the video information of the distribution content in the display area, and displays the image information of the interactive service in a partial display area which forms a part of the display area. This allows the user to use interactive services such as a message function with other users while viewing the content.
- the interactive service is used not only in the form used in combination with the video delivery service, but also in a form in which only passive information acquisition such as message reception is performed without the video delivery service. Then, for example, when confirming the message reception status in real time, the user needs to activate the display device for a long time regardless of the necessity of content viewing.
- the content displayed on the display device may be felt offensive, or the power consumption of the display device may be increased. Therefore, when performing passive information acquisition, the convenience of a display apparatus will fall.
- this invention tends to provide the display apparatus, the display system, the display method, and program which can improve the convenience in the case of performing passive information acquisition.
- a communication unit for receiving image information and control information from an external device, a display unit for displaying image information received from the external device on at least a part of a display area, and the external device And controlling the display of the image information on the partial display area forming a part of the display area based on the control information received from the control unit and suppressing the execution of the display function on the area other than the partial display area.
- a display device is provided.
- control unit may suppress the output of the backlight corresponding to the area other than the partial display area on the display area.
- control unit may control generation of image data so as to suppress a drive voltage of a pixel corresponding to an area other than the partial display area.
- different areas on the display area may be periodically set as partial display areas.
- the communication unit transmits display area information indicating the logical resolution and physical size of the partial display area to the external device, receives the image information adjusted based on the display area information from the external device, and the display unit The adjusted image information may be displayed in the partial display area.
- the communication unit may use, from an external device, the image information in which at least one of the size of the image, the size of characters in the image, the layout of the image, and the image constituting the image information is adjusted. It may be received.
- the display area is divided into a main screen display area and a sub screen display area including a partial display area fixed on the display area, and the control unit receives a sub screen display mode instruction from an external device.
- the output of the backlight corresponding to the main screen display area may be suppressed.
- the control unit may perform control so as not to drive a pixel corresponding to the main screen display area.
- the pixels of the main screen display area and the sub screen display area may be disposed on a display panel formed of one glass substrate.
- the backlight corresponding to the main screen display area and the backlight corresponding to the sub screen display area may be made up of light sources different from each other.
- the backlight corresponding to the main screen display area may be a lamp
- the backlight corresponding to the sub screen display area may be an LED.
- a light shielding plate may be disposed between the backlight corresponding to the main screen display area and the backlight corresponding to the sub screen display area.
- the external device may be a network connection device.
- a system having the display device according to the first aspect, and an external device for transmitting image information and control information to the display device.
- the steps of receiving image information and control information from an external device, and controlling display of image information regarding a partial display area forming a part of the display area are controlled based on the control information. And a step of suppressing execution of a display function regarding an area other than the partial display area.
- a program for causing a computer to execute the display method according to the third aspect is provided.
- the present invention it is possible to provide a display device, a display system, a display method, and a program that can improve the convenience in the case of performing passive information acquisition.
- FIG. 2 is a block diagram showing the architecture of an IPTV service using IMS. It is a block diagram which shows the main structures of STB. It is a block diagram which shows the main structures of TV. It is a perspective view which shows the structure of the display shown in FIG. It is a figure which shows an example of the display method which concerns on the 1st Embodiment of this invention. It is a block diagram which shows the structure of LCD panel periphery of TV which concerns on the 1st Embodiment of this invention. It is a block diagram which shows the structure of HDMI. It is a figure which shows the identification information of a video format. It is a figure which shows the data structure of CEC.
- FIG. 1 shows the data structure (header block) of CEC. It is a figure which shows the data structure (data block) of CEC. It is a figure which shows the prescription
- FIG. 17 is a partial cross-sectional view showing a configuration shown in FIG. It is a block diagram which shows the circuit structure of LCD panel periphery.
- FIG. 19 is a diagram showing a gate drive circuit shown in FIG. 18;
- FIG. 10 is a timing chart showing gate drive scanning in a main screen display mode.
- FIG. 17 is a timing chart showing gate drive scanning in a sub-screen display mode.
- FIG. 10 is a timing chart showing gate drive scanning in a full screen display mode.
- FIG. 1 is a view showing an outline of a display device according to an embodiment of the present invention. As shown in FIG. 1, the display device 100 is connected to the IPTV service 300 via the external device 200.
- the IPTV service 300 uses the interactive network NW to provide the user with interactive services such as a message function, a chat function, and a presence function, in addition to the video distribution service.
- the display device 100 is a television receiver or the like, and the external device 200 is a STB (Set Top Box) or the like.
- the user operates the display device 100 via the external device 200 to view the distributed content or check the message reception status.
- the display device 100 displays the video information of the content in the display area A10, and displays the image information of the interactive service in the partial display area A11 which is a part of the display area A10.
- the display device 100 executes a display function regarding all the areas L1 and L2 of the display area A10. On the other hand, when the user does not need to view the content, the display device 100 suppresses the execution of the display function regarding the area L1 other than the partial display area A11 in the display area A10.
- FIG. 2 is a block diagram showing the configuration of an IPTV service 300 using IMS.
- the IMS network 1 is configured to include a Home Subscriber Subsystem (HSS) 5, AS (Application Servers) 7, 9 and the like centering on a Call Session Control Function (CSCF) 3 based on a Session Initiation Protocol (SIP).
- HSS Home Subscriber Subsystem
- AS Application Servers
- SIP Session Initiation Protocol
- the user terminal 10 or 100 which is a mobile phone or TV accesses the CSCF 3 to register the user terminal 10 or 100 and control the session setting. In this process, it is determined in accordance with the user setting information registered in the HSS 5 whether or not the user terminal 10, 100 has subscribed to a required service.
- AS 7 and 9 are servers that actually process each service such as chat function and IPTV function.
- a user terminal 10 which is a mobile phone, for example, connects to an AS (chat) 7 providing a chat function via a mobile telephone network 11. Then, the user terminal 10 establishes a session with a plurality of members of the registered user group via the AS (chat) 7 and uses MSRP (Message Session Relay Protocol) to establish a session between the members via the relay server. Conduct a chat session.
- AS chat
- MSRP Message Session Relay Protocol
- the user terminal 100 which is, for example, a TV is connected to the AS (IPTV) 9 on the broadband IP network 15 via the STB 200 and the RG (IMS gateway) 13. Connecting.
- the AS (IPTV) 9 implements an IPTV function in cooperation with an EPG (Electronic Program Guide) server 301 that performs a service and a video server 303 that distributes content.
- EPG Electronic Program Guide
- the TV 100 and the STB 200 are connected using, for example, a video / audio input / output interface standard such as HDMI (High-Definition Multimedia Interface).
- a video / audio input / output interface standard such as HDMI (High-Definition Multimedia Interface).
- FIG. 3 is a block diagram showing the main configuration of STB 200.
- the STB 200 which is an external device, includes a CPU 201, a ROM 203, a RAM 205, a network I / F 207, an infrared light receiving unit 209, a graphic control unit 211, a VRAM 213, an MPEG decoder 215, a video combining unit 217, an HDMI transmission unit 219, a power supply unit 221, and a system. It comprises bus 223.
- the CPU 201 develops the processing program stored in the ROM 203 on the RAM 205 and executes the processing program, thereby controlling the entire STB 200.
- the processing program includes a communication protocol used to access the IPTV service 300 and an application used to control a user interface such as an EPG.
- the network I / F 207 is used for communication with the IPTV service 300, and the infrared light receiving unit 209 transmits an instruction of a user input through a commander (not shown) or the like to the application.
- the graphic control unit 211 is used to generate a graphical user interface (GUI) image such as an EPG, and the VRAM 213 stores image data processed by the graphic control unit 211.
- GUI graphical user interface
- the MPEG decoder 215 decodes the content compressed and delivered by a compression method such as MPEG.
- the video combining unit 217 combines the output of the graphic control unit 211 and the decoded video data. Thus, according to the setting of the transparency, the GUI image is displayed superimposed on the video information of the content.
- the HDMI transmission unit 219 outputs the video and audio signal processed by the MPEG decoder 215 and the video synthesis unit 217 to the TV 100, and the power supply unit 221 supplies power to each unit.
- FIG. 4 is a block diagram showing the main configuration of the TV 100.
- FIG. 5 is a perspective view showing the configuration of the display 135 shown in FIG.
- the TV 100 which is a display device, is a liquid crystal display (LCD) television.
- the TV 100 includes a CPU 101, a ROM 103, a RAM 105, a network I / F 107, an infrared light receiving unit 109, a graphic control unit 111, a VRAM 113, and an MPEG decoder 115.
- the TV 100 includes an analog tuner 117 and a digital tuner 119, an analog input unit 121, a video decoder 123, an audio A / D 125, an HDMI transmission unit 127, a video processing unit 129, an audio processing unit 131, a display control unit 133, a display 135, an audio
- the amplifier 137, the speaker 139, the backlight control unit 141, the power supply unit 143, and the system bus 145 are included.
- the analog input unit 121 is used to input an analog video and audio signal from an external device.
- the video decoder 123 and the audio A / D 125 convert an analog video and audio signal into a digital signal.
- the HDMI transmission unit 127 is used to input a digital video and audio signal from the STB 200.
- the video and audio signals input from the tuners 117 and 119, the analog input unit 121, or the HDMI transmission unit 127 are directly or indirectly input to the video processing unit 129 and the audio processing unit 131, and the video instructed by the user
- the audio signal is output to the display control unit 133 and the audio amplifier 137.
- the video processing unit 129 performs scaling processing on the video data in order to display video information corresponding to the video data in a predetermined area on the display area A10.
- the scaling process is a technique conventionally used to display video information in a two-screen display mode, a small screen display mode, or the like.
- the display control unit 133 generates a timing signal for driving a pixel and a video data signal based on the vertical and horizontal synchronization signals of the video signal input from the video processing unit 129, and supplies the generated signal to the display 135.
- the display 135 includes an LCD panel 151, optical films 153 (153a to 153d), a cold cathode fluorescent lamp group 155 forming a backlight, and a reflection plate 157.
- a pixel driving circuit and a backlight driving circuit are mounted on a glass substrate (not shown) of the LCD panel 151.
- the optical film 153 optically adjusts the diffusion and the like of the backlight light.
- the reflection plate 157 reflects the backlight light to the LCD panel 151 side.
- the display control unit 133 controls the pixel driving circuit and supplies a signal for adjusting the light amount of the entire backlight to the backlight driving circuit.
- the dimming signal of the backlight is generated by the video processing unit 129 based on the luminance setting value of the display 135 and the video signal characteristic.
- the HDMI transmission unit 127 receives the image information and the control information from the STB 200.
- the display 135 displays the image information on at least a part of the display area A10.
- the CPU 101 loads the processing program stored in the ROM 103 onto the RAM 105 and executes the program to control the entire TV 100.
- the processing program includes an application for executing the display method according to the present invention.
- the CPU 101 controls the display of the image information related to the partial display area A11 based on the control information, and suppresses the execution of the display function corresponding to the area other than the partial display area A11.
- FIG. 6 is a diagram showing an example of a display method according to the first embodiment of the present invention.
- the TV 100 according to the first embodiment has two display modes consisting of a full display mode and a partial display mode.
- the video information is displayed in the display area A10 of the display 151, and in the partial display mode, the image information is displayed in the partial display area A11 which is a part of the display area A10.
- Video information is input from the IPTV service 300 via the STB 200.
- the display area A10 consists of 1920 ⁇ 1080 pixels (note that 3 LCD pixels of RGB is one pixel)
- the partial display area A11 is an area consisting of 320 ⁇ 240 pixels in the lower center of the display area A10. It is set.
- the partial display area A11 may be set so that the number of pixels in the horizontal direction is the same as that of the entire display area A10.
- the TV 100 changes the display mode under the control of the CPU 101.
- the STB 200 instructs the entire display mode when content viewing is required, and instructs the partial display mode when passive information acquisition such as message reception is performed without the need for content viewing. Then, in the entire display mode, in the regions L1 and L2, the output of the backlight corresponding to the entire display region A10 is performed as usual (lit) (the backlight is lit). In the partial display mode, in the area L1 other than the partial display area A11, the display of the video information is suppressed by suppressing the output of the corresponding backlight.
- the output of the corresponding backlight may be set to 0 (no light).
- FIG. 7 is a block diagram showing the configuration around the LCD panel 151 of the TV 100 according to the first embodiment of the present invention.
- a plurality of cold cathode fluorescent lamps 156 (hereinafter also referred to as lamps 156) constituting a cold cathode fluorescent lamp group 155 (hereinafter also referred to as a lamp group 155) forming a backlight. They are arranged in the vertical direction of the LCD panel 151.
- the lamp 156 is driven by an inverter circuit 147 provided for each lamp 156 based on a light control signal input from the video processing unit 129.
- the inverter circuit 147 may be provided for every two or more lamps 156 instead of being provided for each one lamp 156.
- the inverter circuit 147 is supplied with power from the power supply unit 143 via the backlight control unit 141.
- the backlight control unit 141 normally supplies power to the inverter circuit 147 of the lamp 156 corresponding to the display area A10 in the entire display mode, and corresponds to an area other than the partial display area A11 in the partial display mode. Power supply to the inverter circuit 147 of the lamp 156 is suppressed.
- the partial display area A11 is set at the lower center of the display area A10 so as to correspond to FIG.
- the partial display area A11 may be set to a certain area on the display area A10, or may be set to an arbitrary area. In order to prevent deterioration of the lamp 156 corresponding to the partial display area A11, the partial display area A11 may be periodically set in different areas on the display area A10.
- FIG. 8 is a block diagram showing the configuration of the HDMI
- FIG. 9 is a diagram showing identification information of the video format.
- FIG. 10 is a diagram showing a data structure of the CEC
- FIG. 11 is a diagram showing a definition command of the CEC.
- three data channels 55 (55a, 55b, 55c), a clock channel 57, and a display data channel are provided between a transmitter (HDMI source) 51 and a receiver (HDMI sink) 53.
- DDC transmitter
- CEC home appliance control
- the data channels 55 (55a to 55c) and the clock channel 57 use high-speed digital transmission called transition minimized differential signaling (TMDS) to perform one-way communication from the transmitter 51 to the receiver 53.
- TMDS transition minimized differential signaling
- the DDC channel 59 is mainly used for display control
- the CEC line 61 is mainly used for home appliance control.
- the DDC channel 59 and the CEC line 61 both use a lower frequency than the data channel 55 and the clock channel 57 and perform bidirectional communication between the transmitter 51 and the receiver 53.
- the transmitting device 51 reads the E-EDID stored in the Enhanced Extended Display Identification Data (E-EDID) ROM 63 of the receiving device 53 through the DDC channel 59.
- E-EDID includes identification information indicating a video format applicable to the receiving device 53.
- the full high definition television applies a plurality of video formats consisting of the minimum resolution 640 ⁇ 480 to the maximum resolution 1920 ⁇ 1080 to a predetermined area on the display area A10 by scaling processing of video data.
- the identification information of the video format includes the resolution of each video format, the vertical synchronization frequency, the aspect ratio, and the like.
- the CEC line 61 transmits data composed of a start bit 71, a header block 73, and one or more data blocks 75.
- the data block 75 is a block subsequent to the start bit 71 transmitted in 4.5 ms and the header block 73 including header information, and includes data to be actually transmitted.
- the header block 73 and the data block 75 are 8-bit payload bits (b0 to b7) 81, 91, EOM (End Of Message) 83, 93, ACK (Acknowledge) 85, 95. It consists of
- the logical address (4 bits) of the transmitter 51 and the logical address (4 bits) of the receiver 53 are specified.
- opcodes, operands, parameters and the like are designated by a maximum of 8 bits.
- the command designated by the data block 75 is transmitted from the transmitter 51 to the receiver 53 based on the address designated by the header block 73.
- a broadcast address that specifies the addresses of all the receiving devices 53 that can receive a command can also be used.
- the CEC standard defines a plurality of commands such as an image display command ⁇ Image View On> and an input switching command ⁇ Active Source>.
- Each command includes an opcode name, an opcode value, a parameter, and a reply command.
- the transmitter 51 designates the opcode value and the parameter in the payload bit 91 of each data block 75, and designates the EOM bit 93 and the ACK bit 95 of the final data block as "1".
- the transmitting device 51 confirms the reception of the data block 75 by the receiving device 53 changing the ACK bit 95 to 0.
- the reply command is a command that the receiving device 53 that has received the command should send back to the transmitting device 51.
- the reception device 53 when receiving the power supply status inquiry command ⁇ Give Device Power Status>, the reception device 53 notifies the reception device 51 of the power supply state using the power supply status report command ⁇ Report Power Status>.
- FIG. 12 is a diagram showing a CEC extension command.
- FIG. 13 is a sequence diagram showing a display method according to the first embodiment of the present invention.
- FIG. 14 is a diagram showing another example of the display method according to the present embodiment.
- the video processing unit 129 of the TV 100 performs scaling processing on the video data according to the resolution of the video data input from the STB 200 and the video format set by the STB 200. For example, in a high-definition television, a video format with a resolution of 1920 ⁇ 1080 is usually set for the display area A10. Then, when the resolution of the video data is smaller than the set video format, the video processing unit 129 performs enlargement processing of the video data and outputs the image data to the display control unit 133.
- the TV 100 applies the plurality of video formats described above to a partial display area A11 composed of 320 ⁇ 240 pixels, for example, and displays image information corresponding to image data.
- the video processing unit 129 When the resolution of the image data is larger than the number of pixels of the partial display area A11, the video processing unit 129 performs a reduction process on the image data and outputs the image data to the display control unit 133. For example, when applying a video format 1 called VGA resolution (resolution 640 ⁇ 480) to a partial display area A11 consisting of 320 ⁇ 240 pixels, the video processing unit 129 scales the image data so as to reduce the image data to 1 ⁇ 2. To process.
- VGA resolution resolution 640 ⁇ 480
- the video processing unit 129 displays the image information corresponding to the reduced image data in the partial display area A11, and the video information corresponding to any video data or black video data is in an area other than the partial display area A11. Generate video data to be displayed. As a result, video data with a resolution of 1920 ⁇ 1080 is output to the display control unit 133 as in the entire display mode.
- a VA (Vertical Alignment) type or an IPS (In-Plane Switching) type LCD panel in which a driving voltage is not applied to pixels supplied with black video data is adopted. Therefore, by supplying black video data to pixels corresponding to areas other than the partial display area A11, power consumption due to the drive voltage can be suppressed. Also, by supplying video data other than black to pixels corresponding to areas other than the partial display area A11, decoration is provided around the partial display area A11 by using the light leaked to the area other than the partial display area A11. Display effect can be obtained.
- a vendor in the CEC standard, can set an extension command unique to the vendor.
- the extended command a vendor ID and an operation code value of the command are specified.
- the extension command includes a display area size request command ⁇ Give Display Area Size> and a display area size report command ⁇ Report Display Area Size>. Further, the extended command includes a display mode setting command ⁇ Set Display Area Mode>, a display mode request command ⁇ Give Display Area Mode>, and a display mode report command ⁇ Report Display Area Mode>.
- the STB 200 requests the display area size to the TV 100 by the display area size request command, and the TV 100 reports the display area size to the STB 200 by the display area size report command. Further, the STB 200 requests the display mode from the TV 100 by the display mode request command, and changes the setting of the display mode to the TV 100 by the display mode setting command. On the other hand, the TV 100 reports the current display mode to the STB 200 by the display mode report command.
- the STB 200 transitions from the standby mode to the standard mode.
- the STB 200 receives infrared light from the commander in the standby mode, but maintains the other functions in the low power consumption state, and enables the function for accessing the IPTV service 300 in the standard mode.
- the STB 200 transmits an image display command to the TV 100 by the HDMI transmission unit 219 (S13). If the TV 100 is in the standby mode at the time of receiving the image display command, the TV 100 transitions to the standard mode (S15).
- the STB 200 may use a text display command instead of the image display command.
- the TV 100 always turns off the menu display on the on-screen display (OSD) when receiving the image display command, but maintains the menu display even when the menu display on the OSD is turned on when the text display command is received. .
- OSD on-screen display
- the STB 200 transmits an input switching command to the TV 100 (S17).
- the TV 100 switches the input by the HDMI transmission unit 127 so as to input the video data transmitted from the STB 200 that has transmitted the command (S19).
- the TV 100 displays the GUI menu of the STB 200 together with the video information corresponding to the input video data.
- the STB 200 implements an HTML browser conforming to the open IPTV forum specification, acquires the content menu of the EPG service and the VOD service as an HTML document from the IPTV service 300, and causes the TV 100 to display it as a GUI menu.
- the user uses the commander to perform interaction such as selection of content on the GUI menu (S21).
- the user receives the video distribution service from the IPTV service 300 (S23).
- video information of the content is displayed in the full display mode.
- the STB 200 starts passive information acquisition without viewing content.
- the standby button may be provided on the GUI menu instead of being provided on the commander.
- the STB 200 transmits a display area size request command to the TV 100 by the HDMI transmission unit 219 (S27).
- the display area size report command is sent back to the STB 200 for all display modes applicable to the TV set 100 (S29).
- the TV 100 designates the display mode and the physical size of a predetermined area on the display area A10 as parameters of the display area size report command.
- the display mode is a 1-byte parameter
- the physical size is a parameter representing the horizontal and vertical sizes (in mm) of a predetermined area on the display area A10 on the LCD panel 151 in 2 bytes.
- the TV 100 sends a display area size report command to the STB 200 for the full display mode and the partial display mode.
- the STB 200 displays mode 0, size 1016 ⁇ 572 mm for the entire display mode, display mode 1 for the partial display mode, size 226 ⁇ 95 mm. specify.
- the STB 200 When receiving the display area size report command, the STB 200 transmits the support status of the partial display mode and the physical size of the partial display area A11 to the IPTV service 300 (S31).
- the IPTV service 300 selects a logical resolution appropriate for display in the partial display mode and transmits it to the STB 200.
- the STB 200 provides a method as an extended application program interface (API) of an ECMA script by the implemented HTML browser.
- the method enables reading and setting of information on the display mode acquired from the TV 100 (physical size of each display area, applicable logical resolution).
- the applicable logical resolution corresponds to each video format shown in FIG. 9 and is received from the TV 100 via the CEC line 61.
- the application described by the ECMA script acquires information from the API, and notifies the IPTV service 300 of the acquired information by the request method of XML HTTP (S33). For example, since the partial display area A11 consists of 320 ⁇ 240 pixels, the IPTV service 300 returns the closest VGA resolution 640 ⁇ 480 to the application as an appropriate logical resolution.
- the STB 200 notifies the TV 100 of the display mode corresponding to the logical resolution specified by the IPTV service 300 by the display mode setting command (S35).
- the display mode setting command one of the display modes reported by the display area size report command is designated, and in the present embodiment, the display mode 1 is designated as the partial display mode.
- the STB 200 sets the graphic control unit 211 so that a video signal corresponding to the VGA resolution 640 ⁇ 480 specified via the API is output.
- the TV 100 When receiving the display mode setting command from the STB 200, the TV 100 changes the display mode to the partial display mode (S37).
- the TV 100 receives image data to be displayed in the partial display area A11 from the IPTV service 300 via the STB 200.
- the display control unit 133 supplies the scaled image data to the display 135 in order to display in the partial display area A11.
- the backlight control unit 141 supplies normal power to the inverter circuit 147 of the lamp 156 corresponding to the partial display area A11, and suppresses power supply to the inverter circuit 147 of the lamp 156 corresponding to the area other than the partial display area A11. .
- the user can perform passive information acquisition such as message reception without displaying the video information of the content (S39).
- the STB 200 can change the setting of the display mode to the entire display mode by the display area setting command specifying the display mode 0. For example, the STB 200 changes the setting of the display mode to the entire display mode when the user instructs to reply the message after confirming the reception of the message or instructs to view the content.
- the IPTV service 300 adjusts the character size, layout, etc. of the image information displayed in the partial display area A11 according to the physical size and logical resolution of the partial display area A11.
- An HTML document can be generated to cause the TV 100 to display the subsequent image information.
- the STB 200 receives the HTML document and provides the user with an interactive service for passive information acquisition.
- the LCD panel 151 has 1920 ⁇ 1080 pixels, the resolution of the video format input for the partial display area is 640 ⁇ 480, and the vertical size of the standard font suitable for character reading in the full display mode is 36 pixels Assume.
- a font suitable for character reading in the partial display areas A11 and A11 ′ is determined as follows.
- Region A11 ′: 36 ⁇ (480/1080) ⁇ (1016/452) 36 pixels
- the image information is adjusted based on the logical resolution and physical size of the partial display area A11, so that appropriate image information can be displayed on the partial display area A11.
- the image size can also be determined in the same manner as the character size.
- information such as time information and weather information can be displayed.
- the image information of the interactive service is displayed in the partial display area A11, and the display function is executed for areas other than the partial display area A11.
- the power consumption of the TV 100 is also reduced by suppressing the output of the backlight and / or generating the image data capable of suppressing the driving voltage of the pixels outside the partial display area A11.
- FIG. 15 is a diagram showing an example of a display method according to the second embodiment of the present invention.
- the TV 100 ′ according to the second embodiment has three display modes including a main screen display mode, a sub screen display mode, and a full screen display mode.
- the display area of the display 135 is divided into a main screen display area A21 in which content is displayed, and a sub screen display area A22 in which a message reception status or the like is displayed.
- the main screen display area A21 is composed of 1920 ⁇ 1080 pixels
- the sub screen display area A22 is composed of 1920 ⁇ 120 pixels.
- main screen display mode (a) video information is displayed in the main screen display area A21.
- sub screen display mode (b) image information is displayed in the sub screen display area A22.
- full screen display mode (c) Image information is displayed in the main screen display area A21 and the sub screen display area A22.
- the TV 100 ′ changes the display mode under the control of the CPU 101.
- the STB 200 instructs the main screen display mode when performing only content viewing, instructs the sub screen display mode when performing passive information acquisition only, and performs the full screen when performing content viewing and passive information acquisition Indicate the display mode.
- the TV 100 ′ only outputs the backlight corresponding to the main screen display area A21 and drives the pixels in the main screen display mode, and outputs the backlight corresponding to the sub screen display area A22 in the sub screen display mode And only drive the pixels.
- the output of the backlight may be suppressed or may be zero.
- FIG. 16 is a plan view showing the configuration around the LCD panel 151 ′ of the TV 100 ′ according to the second embodiment of the present invention.
- FIG. 17 is a partial cross-sectional view (cross section AA) showing the configuration shown in FIG.
- FIG. 18 is a block diagram showing a circuit configuration around the LCD panel 151 ′.
- the LCD panel 151 ' is formed of one glass substrate, and is divided into a main screen display area A21 and a sub screen display area A22 by a light shielding plate 161 provided between the LCD panel 151' and the back chassis 159.
- the low cost lamp group 155 functions as a direct type backlight
- the LED group 163 having a long lifetime functions as an edge light type backlight.
- the optical film 153, the lamp group 155, and the reflection plate 157 are disposed on the back surface of the LCD panel 151', as in the first embodiment.
- the optical film 153, the LED group 163, the light guide plate 165, and the reflection plate 157 are disposed on the back surface of the LCD panel 151 '.
- the LED group 163 is disposed on the light shielding plate 161 side, and the light guide plate 165 made of an acrylic plate or the like is disposed to guide the light of the LED group 163 to the entire sub screen display area A22.
- the LED group 163 may be disposed other than the light shielding plate 161 side.
- the light shielding plate 161 prevents optical interference between the light of the lamp group 155 and the light of the LED group 163.
- Each of the lamps 156 constituting the lamp group 155 is driven by the inverter circuit 147 based on the dimming signal, as in the first embodiment. Further, the LED group 163 is also driven by the inverter circuit 147 based on the dimming signal, as in the case of the lamp 156. That is, power is supplied to the inverter circuit 147 of each lamp 156 of the lamp group 155 in the main screen display mode, power is supplied to the inverter circuit 147 of the LED group 163 in the sub screen display mode, and in the full screen display mode Power is supplied to each lamp 156 of the lamp group 155 and the inverter circuit 147 of the LED group 163.
- the pixels on the display panel 151 ' can be easily manufactured by arranging the pixels on the main screen display area A21 and the sub screen display area A22 on the display panel 151' formed of one glass substrate.
- an appropriate light source can be adopted as the backlight according to the usage frequency of the sub-screen display area A22.
- the life of the backlight can be extended.
- the case of the television of LCD system is demonstrated, the case of an organic electroluminescent display can be demonstrated similarly.
- a gate drive circuit 171 driving gate electrodes (not shown) of the lines Y1 to Ym arranged in the horizontal direction, and lines X1 to Xm arranged in the vertical direction
- the source drive circuit 173 which drives the source electrode (not shown) of the circuit is arranged.
- the display control unit 133 generates a gate timing signal for driving the gate and video data for driving the source based on the video signal input from the video processing unit 129.
- the drive voltage generation circuit 175 supplies power from the power supply unit 143 to the gate drive circuit 171 and the source drive circuit 173 under the control of the CPU 101.
- the drive voltage generation circuit 175 supplies gate drive voltages for the main screen and the sub screen to the gate drive circuit 171, and supplies a source drive voltage and a gradation reference voltage to the source drive circuit 173.
- the drive voltage is applied to the active element of each pixel by the gate drive circuit 171 and the source drive circuit 173, and the backlight light passing through the pixel changes according to the change of the drive voltage, so that the video information is transmitted to the LCD panel 151 '. Is displayed. In each pixel, three LCD pixels with RGB color filters are provided.
- the CPU 101 ′ controls the supply of the gate timing signal and the drive voltage to the gate drive circuit 171 according to the display mode.
- a drive voltage is supplied to the corresponding gate drive circuit 171.
- a drive voltage is supplied to the corresponding gate drive circuit 171 in order to drive the pixels on the lines Yn + 1 to Ym corresponding to the sub-screen display area A22.
- drive voltages are supplied to all the gate drive circuits 171 in order to drive the pixels on the lines Y1 to Ym corresponding to the main screen display area A21 and the sub screen display area A22.
- the CPU 101 ′ controls the drive voltage generation circuit 175 so as to generate an appropriate source drive voltage according to the designated display mode, and controls the display control unit 133 so as to generate an appropriate gate timing signal. .
- FIG. 19 is a diagram showing an example of the gate drive circuit 171 shown in FIG. In the LCD panel 151 ′, first to fourth gate drive circuits 171a to 171d for the main screen and a fifth gate drive circuit 171e for the sub screen are arranged.
- Each of the gate drive circuits 171a to 171e has a 270-bit shift register 172 in order to sequentially apply a drive voltage to up to 270 gate electrodes O. Pixels corresponding to 1080 lines forming the main screen display area A21 are driven by the first to fourth gate driving circuits 171a to 171d using the shift register 172, and pixels corresponding to 120 lines forming the sub screen display area A22 are It is driven by the fifth gate drive circuit 171e.
- the first to fourth gate driving units 171a to 171d use the input of the start pulse as a trigger and shift the shift register 172 in synchronization with the gate clock to sequentially apply the driving voltage to the gate electrodes O1 to O270. .
- the first to fourth gate drive circuits 171a to 171d are cascade-connected, and when the drive power for the main screen is on, when the start pulse for the main screen is input, the main screen display area A21 is displayed. Driving voltages are sequentially applied to the gate electrodes for 1080 lines.
- the fifth gate drive circuit 171e is triggered by the input of the start pulse and shifts the shift register 172 in synchronization with the gate clock to sequentially apply drive voltages to the gate electrodes O1 to O120.
- the start pulse for the sub screen is ORed with the shift-up signal of the fourth gate drive circuit 171d, and the calculation result is used as the start pulse for the sub screen.
- the drive voltage is applied to the gate electrodes for 120 lines of the sub screen display area A22 following the gate electrodes for 1080 lines of the main screen display area A21. Are sequentially applied.
- the drive power for the main screen is off and the drive power for the sub screen is on, when the start pulse for the sub screen is input, the gate electrode for 120 lines of the sub screen display area A22 is Drive voltages are sequentially applied.
- FIGS. 20, 21, and 22 are timing diagrams showing gate drive scanning in the main screen display mode, the sub screen display mode, and the full screen display mode.
- 20 to 22 show the vertical synchronization signal, the start pulse, and the gate clock generated by the display control unit 133, the gate drive voltage generated by the drive voltage generation circuit 175, and the gate drive output.
- each screen display mode for example, the next pixel is used for each video format shown in FIG. ⁇
- Main screen display mode 1920 x 1080 pixels (high definition resolution)
- Sub-screen display mode 1920 ⁇ 120 pixels (special resolution)
- Full screen display mode 1920 x 1200 pixels (WUXGA resolution)
- the video data is HDMI input at an internal vertical synchronization of 59.94 Hz, and the display control unit 133 generates a 59.94 Hz vertical synchronization signal in the same manner as the video data.
- the display control unit 133 supplies a gate timing signal to the gate drive circuit 171 and supplies video data to the source drive circuit 173 in synchronization with the dot clock at the application timing of the drive voltage to each gate electrode.
- gate drive power for the main screen is turned on and gate drive power for the sub screen is turned off. Then, as shown in FIG. 20, a gate clock of horizontal synchronization 67.43 kHz is supplied to the gate drive circuit 171.
- the number of display effective lines is 1080, the total number of scanning lines is 1125.
- the start pulse for the main screen is input to the first gate drive circuit 171a in synchronization with the vertical synchronization signal.
- the cascaded first to fourth gate drive circuits 171a to 171d sequentially apply drive voltages to the gate electrodes while shifting the shift register 172 in synchronization with the gate clock. .
- gate drive power for the sub screen is turned on. Then, as shown in FIG. 21, a gate clock of horizontal synchronization 7.49 kHz is supplied to the gate drive circuit 171.
- the number of display effective lines is 120, the total number of scanning lines is 124.
- the start pulse for the sub-screen is input to the fifth gate drive circuit 171 e in synchronization with the vertical synchronization signal.
- the fifth gate drive circuit 171 e sequentially applies a drive voltage to the gate electrodes while shifting the shift register 172 in synchronization with the gate clock.
- gate drive power for the main screen and the sub screen is turned on. Then, as shown in FIG. 22, a gate clock of horizontal synchronization 74.56 kHz is supplied to the gate drive circuit 171.
- the number of display effective lines is 1200, but the total number of scanning lines is 1245.
- the start pulse for the main screen is input to the first gate drive circuit 171a in synchronization with the vertical synchronization signal.
- the cascaded first to fourth gate drive circuits 171a to 171d sequentially apply drive voltages to the gate electrodes while shifting the shift register 172 in synchronization with the gate clock.
- the shift-up signal of the fourth gate drive circuit 171 d is subjected to an OR operation 177 and input, the fifth gate drive circuit 171 e shifts the shift register 172 in synchronization with the gate clock, The drive voltage is applied sequentially.
- the power consumption of the TV 100 ' can be further reduced by suppressing the output of the backlight for the main screen and suppressing the drive voltage by the source drive circuits 171a to 171d for the main screen.
- the supply of the drive voltage by the gate drive circuit 171 has been described, but the supply of the common voltage may be controlled.
- the image information of the interactive service is displayed on the sub screen display area A22, and the main screen display area other than the sub screen display area A22.
- the display of unnecessary video information is suppressed.
- the power consumption of the TV 100 ′ is also reduced by suppressing the output of the backlight and performing the drive of the pixels.
- the video signal may be transmitted using an AVI Info (Auxillary Video Information) frame in the partial display area mode or the sub display area mode.
- AVI Info Advanced Video Information
- the video display system is configured to include the TV 100, 100 'and the STB 200 to which the HDMI connection is made has been described.
- the video display system may be configured to include a TV that incorporates the IPTV STB function.
- the TVs 100 and 100 ' are LCD televisions.
- the power consumption of the TV 100 or 100' can be reduced by suppressing the execution of the display function in part of the display area.
- the case where one partial display area A11 is set has been described, but two or more partial display areas A11 may be set. Also, two or more partial display areas A11 may be set with different numbers of pixels. In this case, the number of pixels of the partial display area A11 and / or the position on the display area A10 may be set by extension of the CEC command.
- the video information is displayed in each display mode using the video data of the same resolution as the video format input in the HDMI has been described.
- the video information may be displayed in each display mode using video data of a resolution different from that of the HDMI-input video format through scaling processing.
- main screen display area A21 and the sub screen display area A22 may display the message reception status etc. and the video information of the content on each. Also, a GUI menu of, for example, the TV 100 ′ or another application executed on the STB 200 may be displayed. Furthermore, one video information may be displayed using the main screen display area A21 and the sub screen display area A22.
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Abstract
Description
図1は、本発明の実施形態に係る表示装置の概要を示す図である。図1に示すように、表示装置100は、外部装置200を介してIPTVサービス300に接続される。
本発明の実施形態に係る表示システムは、IMSを利用したIPTVサービス300のアーキテクチャを利用する。図2は、IMSを利用したIPTVサービス300の構成を示すブロック図である。
図3は、STB200の主要な構成を示すブロック図である。外部装置であるSTB200は、CPU201、ROM203、RAM205、ネットワークI/F207、赤外線受光部209、グラフィック制御部211、VRAM213、MPEGデコーダ215、映像合成部217、HDMI伝送部219、電源供給部221、システムバス223を含んで構成される。
図4は、TV100の主要な構成を示すブロック図である。図5は、図4に示すディスプレイ135の構成を示す斜視図である。
図6は、本発明の第1の実施形態に係る表示方法の一例を示す図である。第1の実施形態に係るTV100は、全体表示モードおよび部分表示モードからなる2の表示モードを有する。
図7は、本発明の第1の実施形態に係るTV100のLCDパネル151周辺の構成を示すブロック図である。LCDパネル151の背面には、バックライトをなす冷陰極管ランプ群155(以下では、ランプ群155とも称する。)を構成する複数の冷陰極管ランプ156(以下では、ランプ156とも称する。)がLCDパネル151の垂直方向に配列される。
以下では、図8~図12を参照しながら、本発明の第1の実施形態に係る表示方法について説明する。本発明の実施形態に係る表示方法では、HDMI規格を拡張することで、HDMI接続されたTV100の表示モードの設定がSTB200から変更される。
hf、hf’:全体表示モード、部分表示モードのフォントの縦サイズ(画素)
rv、rv’:表示領域A10、部分表示領域A11の縦解像度(画素)
sv、sv’:表示領域A10、部分表示領域A11の縦サイズ(mm)
領域A11:36×(480/1080)×(1016/226)=72画素
領域A11’:36×(480/1080)×(1016/452)=36画素
以上説明したように、本実施形態によれば、受動的な情報取得を行う場合に、対話型サービスの画像情報を部分表示領域A11に表示し、部分表示領域A11以外の領域に関する表示機能の実行を抑制することで、不要な映像情報の表示が抑制される。また、部分表示領域A11以外で、バックライトの出力を抑制し、および/または画素の駆動電圧を抑制可能な画像データを生成することで、TV100の消費電力も削減される。
図15は、本発明の第2の実施形態に係る表示方法の一例を示す図である。図15に示すように、第2の実施形態に係るTV100’は、主画面表示モード、副画面表示モード、および全画面表示モードからなる3の表示モードを有する。ディスプレイ135の表示領域は、コンテンツが表示される主画面表示領域A21、およびメッセージ受信状況等が表示される副画面表示領域A22に区分される。例えば、主画面表示領域A21は、1920×1080画素からなり、副画面表示領域A22は、1920×120画素からなる。
図16は、本発明の第2の実施形態に係るTV100’のLCDパネル151’周辺の構成を示す平面図である。図17は、図16に示す構成を示す部分断面図(断面A-A)である。図18は、LCDパネル151’周辺の回路構成を示すブロック図である。
図19は、図18に示すゲート駆動回路171の一例を示す図である。LCDパネル151’には、主画面用の第1~第4のゲート駆動回路171a~171d、および副画面用の第5のゲート駆動回路171eが配置されている。
・主画面表示モード:1920×1080画素(ハイビジョン解像度)
・副画面表示モード:1920× 120画素(特殊解像度)
・全画面表示モード:1920×1200画素(WUXGA解像度)
以上説明したように、本実施形態によれば、受動的な情報取得を行う場合に、対話型サービスの画像情報を副画面表示領域A22に表示し、副画面表示領域A22以外の主画面表示領域A21に関する表示機能の実行を抑制することで、不要な映像情報の表示が抑制される。また、主画面表示領域A21で、バックライトの出力を抑制し、画素の駆動を実行しないように制御することで、TV100’の消費電力も削減される。
101、101’ CPU
127 HDMI伝送部
135 ディスプレイ
200 STB
A10 表示領域
A11 部分表示領域
A21 主画面表示領域
A22 副画面表示領域
Claims (16)
- 画像情報および制御情報を外部装置から受信する通信部と、
前記外部装置から受信された画像情報を表示領域の少なくとも一部に表示する表示部と、
前記外部装置から受信された制御情報に基づいて、前記表示領域の一部をなす部分表示領域に関する前記画像情報の表示を制御するとともに、前記部分表示領域以外の領域に関する表示機能の実行を抑制する制御部と、
を備える表示装置。 - 前記制御部は、前記外部装置から部分表示モードの指示が受信されると、前記表示領域上の前記部分表示領域以外の領域に対応するバックライトの出力を抑制する、請求項1に記載の表示装置。
- 前記制御部は、前記外部装置から部分表示モードの指示が受信されると、前記部分表示領域以外の領域に対応する画素の駆動電圧が抑制されるように、画像データの生成を制御する、請求項1に記載の表示装置。
- 前記表示領域上の異なる領域が前記部分表示領域として周期的に設定される、請求項1に記載の表示装置。
- 前記通信部は、前記部分表示領域の論理解像度および物理サイズを表す表示領域情報を前記外部装置に送信し、前記表示領域情報に基づいて調整された画像情報を前記外部装置から受信し、
前記表示部は、前記調整された画像情報を前記部分表示領域に表示する、請求項1に記載の表示装置。 - 前記通信部は、前記表示領域情報に基づいて、画像のサイズ、画像中の文字サイズ、画像のレイアウト、前記画像情報を構成する画像のうち少なくともいずれかが調整された画像情報を前記外部装置から受信する、請求項5に記載の表示装置。
- 前記表示領域は、主画面表示領域と、前記表示領域上に固定された前記部分表示領域からなる副画面表示領域とに区分され、
前記制御部は、前記外部装置から副画面表示モード指示が受信されると、前記主画面表示領域に対応するバックライトの出力を抑制する、請求項1に記載の表示装置。 - 前記制御部は、前記外部装置から副画面表示モード指示が受信されると、前記主画面表示領域に対応する画素の駆動を実行しないように制御する、請求項7に記載の表示装置。
- 前記主画面表示領域および前記副画面表示領域の画素は、1のガラス基板からなる表示パネル上に配置される、請求項7に記載の表示装置。
- 前記主画面表示領域に対応するバックライトと前記副画面表示領域に対応するバックライトは、互いに異なる光源からなる、請求項7に記載の表示装置。
- 前記主画面表示領域に対応するバックライトがランプであり、前記副画面表示領域に対応するバックライトがLEDである、請求項10に記載の表示装置。
- 前記主画面表示領域に対応するバックライトと前記副画面表示領域に対応するバックライトの間には、遮光板が配置される、請求項7に記載の表示装置。
- 前記外部装置がネットワーク接続機器である、請求項1に記載の表示装置。
- 表示装置および外部装置を有する表示システムであって、
前記外部装置は、画像情報および制御情報を前記表示装置に送信し、
前記表示装置は、
前記画像情報および前記制御情報を前記外部装置から受信する通信部と、
前記外部装置から受信された画像情報を表示領域の少なくとも一部に表示する表示部と、
前記外部装置から受信された制御情報に基づいて、前記表示領域の一部をなす部分表示領域に関する前記画像情報の表示を制御するとともに、前記部分表示領域以外の領域に関する表示機能の実行を抑制する制御部と、
を備える、表示システム。 - 画像情報および制御情報を外部装置から受信するステップと、
表示領域の一部をなす部分表示領域に関する前記画像情報の表示を前記制御情報に基づいて制御するとともに、前記部分表示領域以外の領域に関する表示機能の実行を抑制するステップと、
を含む表示方法。 - 画像情報および制御情報を外部装置から受信するステップと、
表示領域の一部をなす部分表示領域に関する前記画像情報の表示を前記制御情報に基づいて制御するとともに、前記部分表示領域以外の領域に関する表示機能の実行を抑制するステップと、
を含む表示方法をコンピュータに実行させるためのプログラム。
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| US13/383,268 US20120113170A1 (en) | 2009-07-28 | 2010-06-22 | Display device, display system, display method, and program |
| CN2010800332793A CN102474669A (zh) | 2009-07-28 | 2010-06-22 | 显示装置、显示系统、显示方法和程序 |
| EP10804213A EP2461583A1 (en) | 2009-07-28 | 2010-06-22 | Display device, display system, display method, and program |
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| JP2009175483A JP2011030081A (ja) | 2009-07-28 | 2009-07-28 | 表示装置、表示システム、表示方法およびプログラム |
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| EP (1) | EP2461583A1 (ja) |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20120040699A (ko) | 2012-04-27 |
| EP2461583A1 (en) | 2012-06-06 |
| JP2011030081A (ja) | 2011-02-10 |
| CN102474669A (zh) | 2012-05-23 |
| US20120113170A1 (en) | 2012-05-10 |
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