JP2009145523A - Image display apparatus, projector provided with image display apparatus, and method of controlling image display apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automatically reproduce images of a part difficult to see after completion of set operation even when reproduced images are difficult to be seen by being hidden in a set screen by performing the set operation such as menu operation during reproducing the images. <P>SOLUTION: An image display apparatus includes a reproducing step of reproducing image information recorded on a storing medium such as a DVD (step S11), a displying step of displaying video signals reproduced in the reproducing step (step S12), and a detecting step of detecting set regulation image display signals displayed to overlap set regulation images on displayed display images (step S14). The image display apparatus reproduces from a reproducing position (step S18) when input of set regulation image display completion signals exists (step S15:Yes) based on reproducing position information indicating the reproducing position when detecting the set regulation image display signals in the reproducing step. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an image display device that displays a video signal, a projector including the image display device, and a control method for the image display device.

  Projectors that project images onto a screen or the like have been rapidly spreading in recent years because they can be used in home theaters and the like. The projector modulates the light source emitted from the light source lamp in accordance with the video signal, the modulated signal is magnified by the projection lens, and the projection light is displayed as an image on the screen (see, for example, Patent Document 1). An integrated projector in which a liquid crystal projector and a playback device such as a VCR (Video Cassette Recorder) are accommodated in the same cabinet has also been proposed (see, for example, Patent Document 2).

  By the way, when image adjustment and various setting operations are performed, a setting screen and an adjustment screen are displayed on a projection surface such as a screen. Normally, when performing image adjustment and various setting operations, it is necessary to first display a menu screen by operating a button installed on the projector main body or a button on a remote control to display a setting screen or an image adjustment screen. The menu screen and setting screen are projected on top of the normal projection image. When the image signal is not projected, the menu screen or the like is displayed alone, and the setting operation may be performed with reference to the setting screen. However, as shown in FIG. 4, if a video signal is being projected, the menu screen or the like is displayed on top of the projected image Z, so that the projected image Z is hidden by the menu screen or the like.

Japanese Patent Laid-Open No. 06-138433 Japanese Patent Application Laid-Open No. 07-113996

  In particular, when performing image adjustment, the user often determines whether or not to perform image adjustment according to the projection environment while viewing a moving image to be projected. If image adjustment is necessary, the image adjustment screen is displayed over the projected image, and the projected image is adjusted to perform image adjustment such as color mode, brightness, contrast, color density, hue, and color adjustment. Hiding on the screen makes it difficult to see. For this reason, if a movie projected during image adjustment is to be viewed again, it must be rewound to a predetermined position and reproduced.

  Even when rewinding to a predetermined position, the predetermined position to be reproduced again is not found, and in many cases, the reproduction position is finally found by repeating pause operation, fast forward operation, etc. in addition to rewinding operation.

  The present invention has been made to solve the above-described problem, and even when a setting operation such as a menu operation is performed during image reproduction, the reproduction image is hidden on the setting screen and is difficult to see. An object of the present invention is to provide an image display device capable of automatically reproducing an image of a portion that is difficult to see after the setting operation is completed, a projector including the image display device, and a control method for the image display device.

An image display device according to the present invention capable of solving the above-described problems displays an image information reproducing unit that reproduces image information recorded on an image information storage medium, and a video signal reproduced by the image information reproducing unit. A display unit; a signal detection unit that detects a setting adjustment image display signal for displaying a setting adjustment image other than the display image on the display image displayed by the display unit; and A reproduction position information storage unit that stores reproduction position information indicating a reproduction position when the signal detection unit detects the setting adjustment image display signal, and
The image information reproduction unit reproduces from the reproduction position when a setting adjustment image display end signal is input based on the reproduction position information.

  According to the above configuration, when the setting adjustment image display end signal is input, the image information is reproduced from the reproduction position when the setting adjustment image display signal is detected during the reproduction of the image information. For example, even when a setting operation such as a menu operation is performed during image playback, the playback image can be played from the playback position when the setting operation is started even if the playback image is hidden behind the setting screen and is difficult to see. . Accordingly, it is possible to automatically reproduce an image of a portion that is difficult to see after the setting operation is completed.

In the image display device of the present invention, the image information reproduction unit includes a reproduction position information storage unit that stores the reproduction position information.
When the signal detection unit detects the setting adjustment image display signal, the reproduction position is stored as the reproduction position information and the reproduction is continued. When the signal detection unit detects the setting adjustment image display end signal, the storage is stored. The reproduction is performed from the reproduction position.

  According to the above configuration, when the signal detection unit detects the setting adjustment image display signal, the image information reproduction unit stores the reproduction position at that time as reproduction position information and continues the reproduction. For example, when performing image adjustment of a display image in the setting adjustment operation, the user often determines whether or not to perform image adjustment according to the surrounding environment while viewing the image displayed on the display unit. Even in such a case, it is possible to perform image adjustment while viewing the reproduced image, and it is possible to automatically go back and reproduce an image that is hidden behind the setting screen during image adjustment.

In the image display device of the present invention, the display unit includes a reproduction position information storage unit that stores the reproduction position information.
When the signal detection unit detects the setting adjustment image display signal, the reproduction position is stored as the reproduction position information. When the signal detection unit detects the setting adjustment image display end signal, reproduction is performed from the stored reproduction position. The image information reproducing unit is instructed to do so.

  According to the above configuration, the display unit stores the reproduction position as reproduction position information when the signal detection unit detects the setting adjustment image display signal. Therefore, an image display device can be provided even if the display unit is provided with a storage unit that stores reproduction position information.

  In addition, the present invention that can solve the above-described problems includes an image display device according to any one of the above, wherein the display unit modulates light emitted from a light source according to the video signal; And a projection unit that projects the light modulated by the light modulation unit.

  According to the above configuration, when the setting adjustment image display end signal is input by operating the projector main body or the remote controller, the image can be reproduced back to the reproduction position when the setting adjustment image display signal is detected during image reproduction. As a result, even when setting operations such as menu operations are performed during image playback, even if the image projected on the projection screen of the projector is hidden behind the setting screen and difficult to see, Playback from the playback position is possible. Therefore, it is possible to automatically reproduce and project the projected image of the portion that was difficult to see during the setting operation after the setting operation is completed.

The method for controlling the image display device according to the present invention, which can solve the above-described problems, includes a reproduction step of reproducing image information recorded in an image information storage medium, and a video signal reproduced in the reproduction step. And a detection step of detecting a setting adjustment image display signal for displaying the setting adjustment image on the display image displayed in the display step.
Based on reproduction position information indicating a reproduction position when the setting adjustment image display signal is detected in the reproduction step, reproduction is performed from the reproduction position when a setting adjustment image display end signal is input.

  According to the above configuration, even when a setting operation such as a menu operation is performed during image playback, even if the playback image is hidden by the setting screen and is difficult to see, playback is started from the playback position when the setting operation is performed. can do. Accordingly, it is possible to automatically reproduce an image of a portion that is difficult to see after the setting operation is completed.

  Hereinafter, embodiments of an image display device, a projector including the image display device, and a control method for the image display device according to the present invention will be described in detail with reference to the drawings.

<First Embodiment>
FIG. 1 is a control block diagram showing the internal configuration of the projector according to the present embodiment.
In the following, a so-called liquid crystal projector in which light is transmitted through a liquid crystal light valve and the transmitted image is enlarged and projected onto a screen will be described as an embodiment. However, projectors that employ other methods are not excluded. Absent. For example, the present invention can be applied to a projector using a micromirror array device.

(Internal configuration of projector)
The projector 1 of this embodiment mainly includes an image display device 10, a power supply control unit 9, and a lamp power supply 13. When the power supply control unit 9 detects power supply from the outside, the power supply control unit 9 supplies power to the lamp power supply 13 in accordance with predetermined power supply conditions and supplies power to other functional units.

The image display device 10 includes a display unit 4, an image information reproduction unit 5, a control unit 8, and a key input processing unit 11. The control unit 8 and the key input processing unit 11 constitute a signal detection unit.
Furthermore, the display unit 4 includes an optical system such as a lens (not shown) in addition to the video signal processing unit 3, the image forming unit 6 (light modulation unit), and the light source unit 7. Specifically, at least two dichroic mirrors are provided. The first dichroic mirror separates the light beam including the R (red) light component and the light beam including the G (green) light component and the B (blue) light component, and then the second dichroic mirror. Thus, the G (green) light component and the B (blue) light component are separated from the light flux including the G (green) light component and the B (blue) light component. In this way, the light source Y from the light source unit 7 can be separated into three components of RGB.

  The image forming unit 6 is a spatial light modulation element, and includes three liquid crystal light valves provided corresponding to RGB light components. Each liquid crystal light valve is composed of a plurality of pixels arranged vertically and horizontally. The light components separated into RGB by the two dichroic mirrors are transmitted or reflected on the image written in these pixels. Furthermore, a prism for synthesizing light transmitted through each liquid crystal light valve is provided, and light transmitted from the liquid crystal light valve is synthesized through the prism. The combined transmitted light is enlarged by the projection unit 14 including a projection lens, is emitted as projection light X, and is displayed on the screen 20 as an image.

  The video signal processing unit 3 performs signal processing on the input video signal. That is, when the video signal input from the video input unit 2 to be described later is an analog signal, analog / digital conversion processing is performed to convert the video signal into a predetermined digital signal format, and the video display state (for example, luminance, contrast, synchronization, etc.) , Tracking, color density, hue, etc.) are adjusted, and an image frame to be written in the image forming unit 6 is generated. The generated image frame is written to each of the RGB liquid crystal light valves.

  As described above, when light is supplied from the light source unit 7 to the image forming unit 6, RGB light components are modulated according to the image frame displayed on each liquid crystal light valve. That is, the transmitted light modulated by the image forming unit 6 is synthesized from the display unit 4 and output as the projection light X.

The image information reproducing unit 5 reproduces image information recorded on a mass storage medium (image information storage medium) such as a DVD (Digital Versatile Disk), an HD DVD (High Definition DVD), or a hard disk. In this embodiment, it functions as a so-called DVD playback device, and includes a video input unit 2 and a playback position information storage unit 12. The video input unit 2 outputs the reproduced image information to the video signal processing unit 3 as a video signal. As described above, the projector 1 of the present embodiment is a DVD-integrated projector of a type incorporating a DVD playback device.
When there is an input of a setting adjustment image display signal for displaying a setting adjustment image such as a menu screen on the screen projected on the screen 20 by the display unit 4, the reproduction position information storage unit 12 reproduces the image being reproduced at that time. The position is stored as reproduction position information.

  As a method for storing the reproduction position information, for example, a method described in Japanese Patent Laid-Open No. 2002-223411 can be employed. That is, in accordance with the well-known DVD video format, the video input unit 2 uses the NV_PCK including the cell number, the playback control information (PCI), and the data search information (DSI) when the setting adjustment image display signal is input. The address may be stored in the reproduction position information storage unit 12 as reproduction position information. When the setting adjustment image display end signal for ending the setting adjustment image display is input, the video input unit 2 receives the cell number and the NV_PCK address when the setting adjustment image display signal stored in the reproduction position information storage unit 12 is input. Is read out, the image information reproducing unit 5 can reproduce the information back to the reproduction position when the menu screen or the like is displayed.

The control unit 8 controls the overall operation of the projector 1. The key input processing unit 11 detects an input operation given from an operation unit of the projector main body or a remote controller as a control signal. The control signal is analyzed via the control unit 8 and transmitted to each functional unit.
As a result of analyzing the control signal input from the key input processing unit 11, the control unit 8 instructs the video input unit 2 to execute DVD reproduction when analyzing that the instruction is DVD reproduction execution instruction.

Further, when the control unit 8 analyzes the control signal input from the key input processing unit 11 and analyzes that it is a setting adjustment image display signal, the control unit 8 instructs the video signal processing unit 3 to display the setting adjustment image. To do. Further, it instructs the video input unit 2 to store the DVD playback position at that time as playback position information and to continue playback.
Further, when the setting adjustment image display end signal is analyzed, the video input unit 2 is instructed to start playback from the DVD playback position based on the stored playback position information.

(DVD playback method when setting adjustment screen display signal is detected)
Next, a DVD playback method when a setting adjustment screen display signal and a setting adjustment screen display end signal are detected will be described. FIG. 2 is a flowchart for explaining a DVD playback method performed by the image display apparatus 10 included in the projector according to the present embodiment.

  When the image information reproducing unit 5 performs DVD reproduction based on the DVD reproduction instruction (step S11), the display unit 4 projects the image signal on the screen 20 as a video signal (step S12). When the key input processing unit 11 detects an input operation given from the operation unit of the projector main body or a remote controller as a control signal, the control unit 8 analyzes the control signal. As a result of the analysis, if it is determined that the setting adjustment image display signal is for executing the menu operation (step S13: Yes), the display unit 4 displays the menu screen on the screen 20. Subsequently, the control unit 8 determines whether or not the image information reproducing unit 5 is reproducing the DVD (step S14). When the DVD is being played back (step S14: Yes), the video input unit 2 acquires the DVD playback position when the menu operation is accepted, and stores it as playback position information in the playback position information storage unit 12 (step S15). . On the other hand, if the DVD playback is not executed when the menu operation is accepted (step S14: No), the DVD playback position is not acquired.

  When the key input processing unit 11 detects the input operation as a control signal again (step S16: Yes), the control unit 8 analyzes the control signal. As a result of the analysis, it is determined whether or not it is a setting adjustment image display end signal for ending the menu operation (step S17). If it is not the setting adjustment image display end signal (step S17: No), the control signal is analyzed and processed in accordance with another input operation (step S18). If it is determined that it is a setting adjustment image display end signal (step S18: Yes), it is determined whether or not reproduction position information is stored in the reproduction position information storage unit 12 (step S19). When the playback position information is stored (step S19: Yes), the video input unit 2 reads and analyzes the playback position information, and performs DVD playback retroactively to the playback position (step S20).

  On the other hand, when the playback position information is not stored (step S19: No), the DVD playback is continued as usual without performing the DVD playback back to the playback position.

  As described above, when the setting adjustment image display end signal is input by operating the projector main body or the remote controller, the projector 1 according to the present embodiment can return to the playback position when the setting adjustment image display signal is detected during DVD playback. Can be played. As a result, even when the setting operation such as the menu operation is performed during DVD playback, even if the image projected on the screen 20 is hidden behind the setting screen and is difficult to see, the playback position when the setting operation is performed Can be played from. Therefore, it is possible to automatically reproduce and project an image of a portion that is difficult to see during the setting operation after the setting operation is completed.

  In the projector 1 of the present embodiment, when the key input processing unit 11 detects the setting adjustment image display signal, the image information reproduction unit 5 stores the DVD reproduction position at that time in the reproduction position information storage unit 12 as reproduction position information. Memorize and continue DVD playback. When performing image adjustment in the setting adjustment operation, the user often determines whether or not to perform image adjustment according to the projection environment of the projector 1 while viewing the image displayed on the screen 20. Even in such a case, image adjustment can be performed while watching a moving image, and a scene that is hidden behind the setting screen during image adjustment and can be automatically reproduced can be reproduced.

<Second Embodiment>
In the projector 1 according to the first embodiment, when the key input processing unit 11 detects an input operation as a control signal and determines that the control signal is a setting adjustment image display signal for executing a menu operation, an image is displayed. The reproduction position information storage unit 12 included in the information reproduction unit 5 is configured to store reproduction position information. In the second embodiment, the display unit 4 includes a reproduction position information storage unit 12. FIG. 3 is an internal block diagram showing a modification of the projector according to the present embodiment.

  As shown in FIG. 3, the display unit 4 includes a reproduction position information storage unit 12. When the key input processing unit 11 detects the setting adjustment image display signal, the DVD playback position at that time is stored as playback position information through the video signal processing unit 3 in the playback position information storage unit 12 included in the display unit 4. When the key input processing unit 11 detects the setting adjustment image display end signal, it instructs the image information reproduction unit 5 to reproduce from the stored DVD reproduction position.

  In this case, the cell number when the setting adjustment image display signal is input and the NV_PCK address including the reproduction control information (PCI) and the data search information (DSI), which are reproduction position information, are input from the video signal input unit 2 to the video. You may set so that it may be input with a signal. If the reproduction position information is input from the video signal input unit 2 together with the video signal, the reproduction position information can be stored in the reproduction position information storage unit 12 via the video signal processing unit 3.

When the setting adjustment image display signal is input, the control unit 8 instructs the video input unit 2 to notify the playback position, and the playback position information notified from the video input unit 2 is displayed on the display unit 4. You may memorize | store in the reproduction | regeneration position information storage part 12. FIG.
The reproduction position information storage unit 12 may be provided in the image display device 10 and may be provided in addition to the image information reproduction unit 5 and the display unit 4.

  In the above embodiment, the projector 1 in which the display unit 4 and the image information reproduction unit 5 are integrated has been described as an example. However, the projector 1 is not necessarily integrated and may be a separate unit.

It is a control block diagram which shows the internal structure of the projector of this embodiment. It is a flowchart for demonstrating the DVD reproduction method which the image display apparatus with which the projector of this embodiment is provided performs. It is an internal block diagram which shows the modification of the projector of this embodiment. It is a schematic diagram when a setting screen is displayed during projection in a conventional projector.

Explanation of symbols

  1: projector, 2: video input unit, 3: video signal processing unit, 4: display unit, 5: image information reproducing unit, 6: image forming unit, 7: light source unit, 8: control unit, 9: power supply control unit 10: Image display device, 11: Key input processing unit, 12: Playback position information storage unit, 13: Lamp power supply, 14: Projection unit, 20: Screen

Claims (5)

An image information reproducing unit for reproducing image information recorded in the image information storage medium;
A display unit for displaying a video signal reproduced by the image information reproduction unit;
A signal detection unit for detecting a setting adjustment image display signal for displaying a setting adjustment image other than the display image on the display image displayed by the display unit;
A reproduction position information storage unit that stores reproduction position information indicating a reproduction position when the signal detection unit detects a setting adjustment image display signal during reproduction of the image information,
The image information reproduction section reproduces from the reproduction position when a setting adjustment image display end signal is input based on the reproduction position information. The image information reproduction unit includes the reproduction position information storage unit,
When the signal detection unit detects the setting adjustment image display signal, the reproduction position is stored as the reproduction position information and the reproduction is continued.
2. The image display device according to claim 1, wherein when the signal detection unit detects the setting adjustment image display end signal, reproduction is performed from the stored reproduction position. The display unit includes the reproduction position information storage unit,
When the signal detection unit detects the setting adjustment image display signal, the reproduction position is stored as the reproduction position information, and when the signal detection unit detects the setting adjustment image display end signal, reproduction is performed from the stored reproduction position. The image display apparatus according to claim 1, wherein the image information reproduction unit is instructed to do so. An image display device according to any one of claims 1 to 3,
The projector comprising: a light modulation unit that modulates light emitted from a light source according to the video signal; and a projection unit that projects light modulated by the light modulation unit. . A reproduction step of reproducing the image information recorded in the image information storage medium;
A display step for displaying the video signal reproduced in the reproduction step;
Detecting a setting adjustment image display signal for displaying the setting adjustment image in a superimposed manner on the display image displayed in the display step, and
An image display device for reproducing from the reproduction position when a setting adjustment image display end signal is input based on reproduction position information indicating a reproduction position when the setting adjustment image display signal is detected in the reproduction step. Control method.

Images