JP2010197633A - Display device, program, and information storage medium - Google Patents

Abstract

To provide a display device and the like capable of more appropriately receiving an image signal from an image supply device and displaying an image.
A projector includes a communication unit that receives an image signal from an image supply device according to reception setting information, determination criterion information, and reception of the image signal is stable according to a reception state of the communication unit. A determination unit 120 that determines whether or not reception is performed, a control unit 130 that updates the reception setting information and causes the determination unit 120 to perform re-determination when it is determined that reception is not stable, and the image signal An image generation unit 140 that generates an image based on the above and a projection unit 190 that displays the image. When the control unit 130 determines that the reception is not stable in the re-determination, the image generation unit 140 A user adjustment instruction image is generated and the projection unit 190 projects the user adjustment instruction image.
[Selection] Figure 2

Description

  The present invention relates to a display device, a program, and an information storage medium.

  When the image supply device and the display device are connected, there is a problem that an image is not displayed due to various factors. For example, in the case of connection via an HDMI terminal in each device, the cause is that the display device does not select an image signal that matches the reception performance on the display side, the cause that the copy protection function in the display device malfunctions, Factors in which the display device cannot properly receive the image signal due to at least one of the quality deterioration of the image signal from the supply device, the quality deterioration of the HDMI cable, the reception circuit of the display device does not have sufficient performance, etc. Malfunctions occur due to such factors.

  For general users, when a problem occurs, it is difficult to identify the cause, and in particular, when a problem occurs due to a combination of multiple factors, it is very difficult to identify the cause. . For example, in Japanese Patent Application Laid-Open No. 2007-140180, when an image signal whose type cannot be determined is input, a measurement value such as a synchronization type of the image signal is displayed, and the user is allowed to make a setting according to the user setting information. A projector that updates setting data and displays an image based on an image signal using the setting data is described.

JP 2007-140180 A

  However, when a problem occurs due to a combination of a plurality of factors, there is a possibility that a situation in which the method of updating the setting data according to the user setting cannot be appropriately handled as disclosed in JP 2007-140180 A may occur. There is.

  An object of the present invention is to receive an image signal from an image supply device more appropriately and receive an image even when a malfunction occurs due to a plurality of factors related to each other when connected to the image supply device. Is to provide a display device, a program, and an information storage medium.

  In order to solve the above-described problem, a display device according to the present invention provides a communication unit that receives an image signal from an image supply device according to reception setting information, determination criterion information, and a reception state of the communication unit. A determination unit configured to determine whether reception of the image signal is stable, and updates at least one of the reception setting information and the determination reference information when the determination determines that the reception is not stable. A control unit that causes the determination unit to re-determine whether reception of the image signal is stable, an image generation unit that generates an image based on the image signal, and a display unit that displays the image. The control unit causes the image generation unit to generate a user adjustment instruction image when the re-determination determines that the reception is not stable, and causes the display unit to generate the user adjustment instruction. And wherein the displaying the instruction image.

  Further, the program according to the present invention includes a computer having a display device including a communication unit that receives an image signal from an image supply device according to reception setting information, according to determination criterion information and a reception state of the communication unit. A determination unit that determines whether reception of the image signal is stable, and updates at least one of the reception setting information and the determination criterion information when the determination determines that the reception is not stable Then, the control unit causes the determination unit to re-determine whether or not the reception of the image signal is stable, and the image generation unit generates an image based on the image signal.

  An information storage medium according to the present invention is an information storage medium that can be read by a computer of a display device including a communication unit that receives an image signal from an image supply device according to reception setting information. It is memorized.

  According to the present invention, when the reception of the image signal is not stable, the display device or the like updates and re-determines at least one of the reception setting information and the determination criterion information, and further receives the image signal in the re-determination. By displaying a user adjustment instruction image when it is determined that the image is not stable, even when a malfunction occurs due to multiple factors related to the connection with the image supply device, An image signal from the supply device can be received more appropriately and an image can be displayed.

  An information input unit that inputs user adjustment instruction information in a state in which the user adjustment instruction image is displayed, wherein the user adjustment instruction image is an image that indicates a display attribute adjustment instruction; The display attribute information is determined according to the user adjustment instruction information, and the communication unit receives the display attribute information transmission request information from the image supply device and displays the display attribute information determined by the control unit. You may transmit to the said image supply apparatus.

  According to this, when it is determined that the reception of the image signal is not stable in the re-determination, the display device or the like transmits the display attribute information to the image supply device in accordance with the user adjustment instruction information. The image signal transmitted from the apparatus can be adjusted. Thereby, the display device or the like can display the image by more appropriately receiving the image signal from the image supply device.

  The user adjustment instruction image may be an image indicating an instruction for confirming a connection state between the image supply device and the display device.

  According to this, the display device or the like can display the image by receiving the image signal from the image supply device more appropriately without inputting the user adjustment instruction information.

  The control unit may update the amplification factor of the image signal as the update of the reception setting information.

  According to this, the display device or the like can display the image by more appropriately receiving the image signal from the image supply device by adjusting the amplification factor of the image signal.

  Further, the control unit may update a reference value that is determined to be stable in receiving the image signal as the update of the determination criterion information.

  According to this, the display device or the like can display the image by receiving the image signal from the image supply device more appropriately by updating the reference value determined to be stable in receiving the image signal. Can do.

It is a figure which shows the use condition of the projector in a 1st Example. It is a functional block diagram of the projector in a 1st Example. It is a flowchart which shows the projection procedure in a 1st Example. It is a figure which shows an example of the user adjustment instruction | indication image in a 1st Example. It is a figure which shows the use condition of the television in a 2nd Example. It is a functional block diagram of the television in a 2nd Example. It is a flowchart which shows the display procedure in a 2nd Example. It is a figure which shows an example of the user adjustment instruction | indication image in a 2nd Example.

  Hereinafter, an embodiment in which the present invention is applied to a projector and an embodiment in which the present invention is applied to a television will be described with reference to the drawings. In addition, the Example shown below does not limit the content of the invention described in the claim at all. In addition, all the configurations shown in the following embodiments are not necessarily essential as means for solving the invention described in the claims.

(First embodiment)
FIG. 1 is a diagram illustrating a usage state of the projector 100 according to the first embodiment. A projector 100, which is a type of display device, is connected to a DVD player 200, which is a type of image supply device, via a digital signal HDMI cable. For example, the projector 100 determines whether or not the image signal can be properly received when the power is turned on, when the source is switched (when the image supply apparatus to which the image signal is input) is switched. In the present embodiment, when the projector 100 determines that the image signal cannot be stably received, the projector 100 updates the reception setting information to perform re-determination, and determines that the image signal cannot be stably received even during re-determination. And a function of adjusting display attribute information according to a user's adjustment instruction.

  Next, functional blocks of the projector 100 having such functions will be described. FIG. 2 is a functional block diagram of the projector 100 according to the first embodiment. The projector 100 determines whether the reception of the image signal is stable according to the communication unit 110 that receives the image signal from the DVD player 200 according to the reception setting information, the determination criterion information, and the reception state of the communication unit 110. A determination unit 120 that performs the determination and the like, and when it is determined that the reception is not stable in the determination, the reception setting information is updated, and the determination unit 120 re-determines whether the reception of the image signal is stable. The control unit 130 includes an image generation unit 140 that generates an image based on an image signal, and a projection unit 190 that functions as a display unit that displays the image.

  The projector 100 includes an information input unit 160 that inputs user adjustment instruction information and the like, and a storage unit 150 that stores image data 152 and the like used by the image generation unit 140.

  Note that the projector 100 may implement the functions of these units using the following hardware. For example, in the projector 100, the communication unit 110 is an HDMI terminal, a waveform adjustment circuit, a reception circuit, etc., the determination unit 120, the control unit 130 is a CPU, the image generation unit 140 is an image processing circuit, the storage unit 150 is a non-volatile memory, etc. The information input unit 160 may be mounted using a remote controller (remote controller), a button, and the like, and the projection unit 190 may be mounted using a lamp, a liquid crystal panel, a liquid crystal driving circuit, a lens, or the like.

  Further, the projector 100 may implement the functions of the determination unit 120 and the like by reading a program stored in the information storage medium 300. As such an information storage medium 300, for example, a CD-ROM, DVD-ROM, ROM, RAM, HDD, or the like can be applied.

  Next, a projection procedure using these parts will be described. FIG. 3 is a flowchart showing a projection procedure in the first embodiment. For example, when the DVD player 200 becomes an input source of an image signal at the time of source switching, the determination unit 120 confirms the reception state of the image signal from the DVD player 200 by referring to the image signal in the communication unit 110 ( Step S1). Specifically, for example, the determination unit 120 determines whether the image signal is stable by determining whether the waveform of the image signal is continuously within the reference range (step S2).

  If it is determined that the image signal is stable, the determination unit 120 performs HDCP authentication (step S3), the image generation unit 140 generates an image based on the image signal received by the communication unit 110, and the projection unit 190 The image is projected (step S4). Note that HDCP authentication is a general process in connection via an HDMI cable. For example, if the HDCP authentication fails, the control unit 130 causes the communication unit 110 to execute a retry process. If the HDCP authentication fails after the retry process, the control unit 130 displays a notification image indicating that the HDCP authentication has failed in the image generation unit 140. Then, the projection unit 190 projects the notification image.

  On the other hand, when it is determined that the image signal is not stable, the control unit 130 updates the reception setting information of the communication unit 110 (step S5). Specifically, for example, the control unit 130 may update the signal amplification factor according to the received signal level in the waveform shaping circuit of the communication unit 110.

  After updating the reception setting information of the communication unit 110, the determination unit 120 confirms the reception state of the image signal from the DVD player 200 (step S6) and determines whether the image signal is stable (step S7).

  When the projector 100 is stable, the projector 100 performs the above-described HDCP authentication (step S3), image generation based on the image signal, and projection (step S4).

  On the other hand, if not stable, the control unit 130 instructs the image generation unit 140 to generate a user adjustment instruction image. In response to the instruction, the image generation unit 140 generates a user adjustment instruction image using the image data 152, and the projection unit 190 projects the user adjustment instruction image (step S8).

  FIG. 4 is a diagram illustrating an example of a user adjustment instruction image 400 in the first embodiment. For example, the user adjustment instruction image 400 includes images indicating a plurality of selectable resolutions. For example, the user selects a desired resolution by operating a button on the remote controller and selects “select” in the user adjustment instruction image 400.

  The information input unit 160 inputs user adjustment instruction information indicating the resolution selected by the user, and the control unit 130 determines display attribute information (for example, EDID) according to the user adjustment instruction information, and the communication unit 110 transmits the display attribute information to the DVD player 200 (step S9).

  For example, the DVD player 200 adjusts an image signal to be transmitted according to a change in the received EDID. After transmitting the display attribute information, the determination unit 120 confirms the reception state of the image signal from the DVD player 200 (step S10) and determines whether the image signal is stable (step S11).

  When the projector 100 is stable, the projector 100 performs the above-described HDCP authentication (step S3), image generation based on the image signal, and projection (step S4).

  On the other hand, when it is not stable, the control unit 130 instructs the image generation unit 140 to generate a notification image. The image generation unit 140 generates a notification image using the image data 152 according to the instruction, and the projection unit 190 projects the notification image (step S12). Note that this notification image is, for example, an image indicating that an image signal cannot be normally received.

  As described above, according to the present embodiment, when the reception of the image signal is not stable, the projector 100 updates the reception setting information (for example, updates the signal amplification factor, etc.) and re-determines. When it is determined that the reception of the image signal is not stable in the re-determination, the user adjustment instruction image 400 is displayed, and thus, when connected to the DVD player 200, a plurality of factors are related in a complex manner. Even when this occurs, an image signal from the DVD player 200 can be received more appropriately and an image can be displayed.

  In particular, according to the present embodiment, the projector 100 performs an internal adjustment (update of reception setting information) prior to the user's adjustment, thereby adjusting items that the user does not want to show to the user and adjustments that are difficult for the user to make adjustments. Since items can be adjusted, more complicated problems can be dealt with.

  Further, according to the present embodiment, the projector 100 can indicate a countermeasure to the user by projecting the user adjustment instruction image 400, so that the user can solve the problem even if a problem occurs. Factors are easy to identify and deal with.

  Further, according to the present embodiment, the projector 100 transmits display attribute information to the DVD player 200 according to the user adjustment instruction information when it is determined that the reception of the image signal is not stable in the re-determination. The image signal transmitted from the DVD player 200 can be adjusted. Thereby, the projector 100 can display the image by receiving the image signal from the DVD player 200 more appropriately.

(Second embodiment)
The display device is not limited to the projector 100, and may be a television, a liquid crystal monitor, or the like, for example. The image supply device is not limited to the DVD player 200, and may be a set top box, a Blu-ray disc player, a video deck, a game device, or the like. Also, the input of user adjustment instruction information is not essential. In the second embodiment, an embodiment will be described in which a television is applied as a display device, a set-top box is applied as an image supply device, and redetermination is performed without inputting user adjustment instruction information.

  FIG. 5 is a diagram illustrating a usage state of the television 500 in the second embodiment. A television 500, which is a type of display device, is connected to a set-top box 600, which is a type of image supply device, via a video cable for analog video signals. For example, the television 500 determines whether or not an image signal can be properly received when the power is turned on or when the source is switched. In this embodiment, when it is determined that the television 500 cannot receive the image signal stably, the television 500 updates the reception setting information and performs re-determination, and when it is determined that the image signal cannot be stably received even in the re-determination. Has a function of performing re-determination after displaying the user adjustment instruction image.

  Next, functional blocks of the television 500 having such functions will be described. FIG. 6 is a functional block diagram of the television 500 in the second embodiment. Is television 500 stable in receiving image signals in accordance with communication unit 510 that receives the image signal from set-top box 600 according to the reception setting information, determination criterion information, and the reception state of communication unit 510? A determination unit 520 for determining whether or not, and re-determination of whether the reception of the image signal is stable in the determination unit 120 by updating the determination reference information when it is determined that the reception is not stable in the determination The control unit 530 is configured to include: an image generation unit 540 that generates an image based on an image signal; a display unit 590 that displays the image; and a storage unit 550 that stores image data 552 and the like.

  Since the hardware configuration is the same as that of the first embodiment, description thereof is omitted. Further, the television 500 may implement a function such as the determination unit 520 by reading a program from the information storage medium 301.

  Next, a display procedure using these units will be described. FIG. 7 is a flowchart showing a display procedure in the second embodiment. For example, when the set top box 600 becomes an input source of an image signal at the time of source switching, the determination unit 520 confirms the reception state of the image signal from the set top box 600 by referring to the image signal in the communication unit 510. (Step S21). Specifically, for example, the determination unit 520 determines whether the image signal is stable by determining whether the waveform of the image signal is continuously within the reference range (step S22).

  When it is determined that the image signal is stable, the image generation unit 540 generates an image based on the image signal received by the communication unit 510, and the display unit 590 displays the image (step S23).

  On the other hand, when it is determined that the image signal is not stable, the control unit 530 updates the determination criterion information of the determination unit 520 (step S24). Specifically, for example, the control unit 530 updates the determination reference value of the determination unit 520 (for example, updates the reference value of the signal level determined to be stable, and determines that the signal is continuously received. Extended time interval).

  After the determination criterion information is updated, the determination unit 520 checks the reception state of the image signal from the set top box 600 (step S25) and determines whether the image signal is stable (step S26).

  If stable, the television 500 generates and displays an image based on the above-described image signal (step S23). On the other hand, if not stable, the control unit 530 instructs the image generation unit 540 to generate a user adjustment instruction image. The image generation unit 540 generates a user adjustment instruction image using the image data 552 according to the instruction, and the display unit 590 displays the user adjustment instruction image (step S27).

  FIG. 8 is a diagram illustrating an example of the user adjustment instruction image 410 in the second embodiment. For example, the user adjustment instruction image 410 includes an image indicating a character string such as “Please check the cable connection state”. When the user adjustment instruction image 410 is displayed, the user confirms whether the video cable and the terminal of the television 500 are properly connected.

  The determination unit 520 confirms the reception state of the image signal from the set top box 600 when a predetermined time (for example, 1 minute) elapses after the user adjustment instruction image 410 is displayed (step S28). It is determined whether or not it is stable (step S29).

  If stable, the television 500 generates and displays an image based on the above-described image signal (step S23). On the other hand, when it is not stable, the control unit 530 instructs the image generation unit 540 to generate a notification image. In response to the instruction, the image generation unit 540 generates a notification image using the image data 552, and the display unit 590 displays the notification image (step S30). Note that this notification image is, for example, an image indicating that an image signal cannot be normally received.

  As described above, according to the present embodiment, the television 500 updates the determination reference information when the reception of the image signal is not stable (for example, the reference value that is determined as the reception of the image signal is stable). When the connection with the set top box 600 is performed by displaying the user adjustment instruction image 410 when it is determined that the reception of the image signal is not stable in the re-determination. Even when a plurality of factors are related in a complex manner and a problem occurs, an image signal from the set top box 600 can be received more appropriately and an image can be displayed.

  In particular, according to the present embodiment, the television 500 performs an internal adjustment (update of judgment criterion information) prior to the user's adjustment, so that adjustment items that the user does not want to show to the user and adjustments that are difficult for the user to make adjustments are performed. Since items can be adjusted, more complicated problems can be dealt with.

  In addition, according to the present embodiment, the TV 500 can display a user adjustment instruction image 410 to indicate a coping method to the user, so that even if a problem occurs, the user can Factors are easy to identify and deal with.

  Further, according to the present embodiment, the television 500 can more appropriately receive the image signal from the set-top box 600 and display an image without inputting user adjustment instruction information.

(Other examples)
In addition, application of this invention is not limited to the Example mentioned above, A various deformation | transformation is possible. For example, the control units 130 and 530 may update both the reception setting information and the determination criterion information.

Further, the user adjustment instruction image 400 that prompts input of user adjustment instruction information is not limited to the selection of resolution, and may be an image that directly selects EDID, for example. Further, the user adjustment instruction image 410 that does not prompt the user adjustment instruction information to be input is not limited to an image for confirming the connection state of the cable. For example, the user adjustment instruction image 410 is an image for instructing restart of the display device or the image supply device. May be.

  The projector 100 is not limited to a liquid crystal projector (transmission type, reflection type such as LCOS), and may be a projector using a DMD (Digital Micromirror Device), for example. DMD is a trademark of Texas Instruments Incorporated. Further, the functions of the projector 100 and the television 500 may be distributed and implemented in a plurality of devices (for example, a PC and a projector, a television and a game device, etc.).

  100 Projector (Display Device), 110, 510 Communication Unit, 120, 520 Determination Unit, 130, 530 Control Unit, 140, 540 Image Generation Unit, 150, 550 Storage Unit, 152, 552 Image Data, 160 Information Input Unit, 190 Projection unit (display unit), 200 DVD player (image supply device), 300, 301 Information storage medium, 400, 410 User adjustment instruction image, 500 TV (display device), 590 display unit, 600 Set-top box (image supply device) )

Claims (7)

A communication unit for receiving an image signal from the image supply device according to the reception setting information;
A determination unit that determines whether reception of the image signal is stable according to determination criterion information and a reception state of the communication unit;
When it is determined in the determination that the reception is not stable, at least one of the reception setting information and the determination reference information is updated, and the determination unit re-determines whether the reception of the image signal is stable. A control unit for performing
An image generation unit for generating an image based on the image signal;
A display unit for displaying the image;
Including
The control unit causes the image generation unit to generate a user adjustment instruction image when it is determined that the reception is not stable in the re-determination, and causes the display unit to display the user adjustment instruction image.
Display device. The display device according to claim 1,
An information input unit for inputting user adjustment instruction information in a state where the user adjustment instruction image is displayed;
The user adjustment instruction image is an image indicating a display attribute adjustment instruction,
The control unit determines display attribute information according to the user adjustment instruction information,
The communication unit receives transmission request information of the display attribute information from the image supply device and transmits display attribute information determined by the control unit to the image supply device.
Display device. The display device according to claim 1,
The user adjustment instruction image is an image indicating an instruction for confirming a connection status between the image supply device and the display device.
Display device. The display device according to any one of claims 1 to 3,
The control unit updates the amplification factor of the image signal as the update of the reception setting information.
Display device. The display device according to any one of claims 1 to 4,
The control unit updates a reference value for determining that reception of the image signal is stable, as an update of the determination criterion information.
Display device. A computer having a display device including a communication unit that receives an image signal from an image supply device according to reception setting information,
A determination unit that determines whether reception of the image signal is stable according to determination criterion information and a reception state of the communication unit;
When it is determined in the determination that the reception is not stable, at least one of the reception setting information and the determination reference information is updated, and the determination unit re-determines whether the reception of the image signal is stable. A control unit for performing
A program that functions as an image generation unit that generates an image based on the image signal. A computer-readable information storage medium having a display device including a communication unit that receives an image signal from an image supply device according to reception setting information,
An information storage medium storing the program according to claim 6.

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