JP2007256757A - Image display apparatus, image display method, program and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image display apparatus which does not make an observer feel that he/she is wasting time, by providing the observer with some information, even in a state of no input image signal. <P>SOLUTION: In the image display apparatus comprising: an image signal input means 61 to which the image signal is input; an image display means 7 for displaying an image, based on input image signal; and a controlling means 6 for controlling the image signal input means 61 and the image display means 7, the controlling means 6 includes: a moving image information storing means 68 in which a moving information for displaying in the image display means 7 is stored; an image signal monitoring means 66 for monitoring the image signal inputted to the image signal input means 61; and a moving information reproducing means 67 for reading and reproducing the moving image information stored in the moving information storing means 68, when inputting of the image signal is stopped in the image signal monitoring means 66. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an image display device, an image display method, a program, and a recording medium.

For example, an image display device such as a projector has a plurality of signal input terminals with different transmission formats, and a video playback device such as a computer or a DVD playback device is connected to one of the signal input terminals, and is output from these devices. An image is displayed based on the received image signal (see, for example, Patent Document 1).
In such an image display device, when the power of the connected computer or the like is turned off, the connection cable is disconnected, or the signal input terminal is switched to nothing, the control means of the image display device In many cases, it is determined that there is no input of an image signal, and a monochrome background image such as blue is displayed or a manufacturer's logo or the like is displayed and a message such as “no video source input” is displayed.

JP 2003-274316 A

  However, in the conventional technique in which a monochrome background image or the like is displayed in a state where no image signal is input, no information is obtained even if the observer observes the display image during that time. In particular, when there are many observers for a single display device such as a projector, there is a problem that a lot of observers spend time unnecessarily.

  An object of the present invention is to provide an image display device, an image display method, a program, and a recording medium that do not cause an observer to feel waste by providing some information even when no image signal is input. There is to do.

An image display device according to the present invention includes:
An image signal input means for inputting an image signal, an image display means for displaying an image based on the input image signal, and a control means for controlling the image signal input means and the image display means A display device,
The control means includes
Moving image information storage means storing moving image information to be displayed on the image display means;
Image signal monitoring means for monitoring an image signal input to the image signal input means;
When the image signal monitoring unit determines that the input of the image signal has been stopped, the image signal monitoring unit includes a moving image information reproducing unit that reads out and reproduces the moving image information stored in the moving image information storage unit.

Here, as moving image information to be stored in the moving image information storage means, for example, moving image content such as commercials can be considered.
According to the present invention, when the input of the image signal from the computer or the like is stopped, the moving image information stored in the moving image information storage unit is automatically reproduced by the moving image information reproducing unit. Even when the input is stopped, the observer can observe the moving image content, and thus does not feel useless.
In particular, when the moving image content that is played back when the input of the image signal is stopped is a commercial, the image display device can function as an advertising medium. Therefore, the commercial provider is given a part of the price of the image display device. A business model effect can be expected in which the cost of the image display device can be reduced by that amount and provided to the customer.

In the present invention, the image display device is connected to a content distribution server that distributes moving image information via a network.
The control means includes
When moving image information is distributed from the content distribution server, it is preferable that the moving image information update unit updates the moving image information stored in the moving image information storage unit.
Here, the moving image information distributed from the content distribution server is preferably moving image content such as the commercial described above.
According to the present invention, since the moving image content displayed when the image signal input is stopped can be used as a system that is updated at regular intervals, the advertisement effect is further improved as an image display device that displays commercials. Can be made.

The present invention is established not only as the image display apparatus described above but also as an image display method executed on the image display apparatus. Specifically, the image display method according to the present invention includes:
Image display comprising image signal input means for inputting an image signal, image display means for displaying an image based on the input image signal, and control means for controlling the image signal input means and the image display means An image display method executed on an apparatus,
The control means is
An image signal monitoring step input to the image signal input means;
When it is determined that the input of the image signal has been stopped, a moving image information reproduction step of reading and reproducing the moving image information from the moving image information storage means in which the moving image information is stored in advance is executed.
According to this invention, the same operation and effect as described above can be enjoyed.

  Further, the present invention is also realized as a program for executing the above-described image display method on an image display device and a computer-readable recording medium on which the program is recorded. You can enjoy the same actions and effects.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a system 1 according to an embodiment of the present invention. This system 1 includes a content distribution server 2 and a projector 4 connected to the content distribution server 2 via a network 3 such as the Internet or an intranet. And is configured.
Although only one content distribution server 2 is shown in FIG. 1 for the sake of convenience, the content distribution server 2 is a server that distributes moving image content such as commercial information to a plurality of projectors 4 connected on the network 3. 21, content distribution means 22, and moving image content storage means 23.

The projector database 21 stores the IP address of each projector 4 connected to the network 3.
The content distribution unit 22 is a part that specifies the projector 4 connected to the network 3 and distributes the moving image content. The specification of the projector 4 to be distributed searches the projector database 21 and acquires an IP address. Is done.
The moving image content storage unit 23 is a part in which the moving image content distributed by the content distribution unit 22 is stored, and includes a storage such as a hard disk connected to the arithmetic processing unit constituting the content distribution server 2. The moving image content stored in the moving image content storage unit 23 is, for example, moving image content related to a commercial such as the projector 4.

The projector 4 is connected to the network 3 and is also connected to an image output device 5 such as a computer or a DVD playback device. Normally, an image is displayed on the screen SC based on an image signal output from the image output device 5. Is displayed.
The projector 4 includes a light source such as a high-pressure mercury lamp, a color separation optical system that separates a light beam emitted from the light source into a plurality of color lights, and performs light modulation on each separated color light according to an input image signal. A three-plate projector provided with a liquid crystal panel as a light modulation device to be performed, a color synthesis optical device such as a dichroic prism that synthesizes the color light modulated by each liquid crystal panel, and a projection optical device that magnifies and projects the synthesized luminous flux Configured as

As shown in FIG. 2, the operation control of the projector 4 is performed by a control unit 6 that performs image processing of an image signal input from an input terminal VIDEO, PC, and the like. Input means 61, RGB / color difference signal converting means 62, decoder 63, image processing means 64, liquid crystal panel driving means 65, image signal monitoring means 66, moving picture information reproducing means 67, moving picture information storing means 68, and moving picture information updating means 69 It is configured with.
The image signal input means 61 is a part to which an image signal is input via an input terminal VIDEO, PC or the like. The image signal input means 61 receives a video signal such as a moving image content output from, for example, a DVD playback device via an input terminal VIDEO, and a presentation output from, for example, a computer via an input terminal PC. An image signal such as an image is input.

The RGB / color difference signal conversion means 62 is a part that converts the RGB signal input from the input terminal PC into a YUV signal, and the converted YUV signal is output to the image processing means 64.
The decoder 63 is a part that converts the video signal input from the input terminal VIDEO into a format suitable for the projector 4. In this embodiment, the decoder 63 also decodes video content compressed in a predetermined compression format such as the MPEG2 format. Then, the decoded image signal is output to the image processing means 64.

The image processing means 64 performs color adjustment of the converted image signal, black-and-white expansion processing, etc., and then converts the YUV signal back to the RGB signal, and further according to individual differences of the liquid crystal panel 7 as the image display means. This is a part that performs V-Tγ correction and frame rate conversion, and the converted image signal is output to the liquid crystal panel driving means 65.
The liquid crystal panel driving means 65 is a part for driving the liquid crystal panel 7 based on the image signal processed by the image processing means 64. The liquid crystal panel driving means 65 converts the image signal input from the input terminal VIDEO, PC, etc. through a series of these processes. Based on this, an image is formed on the liquid crystal panel 7, and the projected image is enlarged and displayed on the screen SC.

The image signal monitoring unit 66 is a part that monitors the image signal input to the image signal input unit 61, and determines whether the input of the image signal to the image signal input unit 61 is performed or the input is stopped. And outputs the result to the moving image information reproducing means 67.
The moving image information reproducing means 67 is a part that reads out the moving image content stored in the moving image information storage means 68 in accordance with the determination result from the image signal monitoring means 66, and instructs the reproduction. After being decoded by the decoder 63, it is processed by the image processing means 64 and displayed on the liquid crystal panel 7.

The moving image information storage means 68 is composed of a rewritable storage such as E ² PROM, and the moving image information storage means 68 stores moving image contents such as commercials compressed in a predetermined compression format such as MPEG2 format. Yes.
The moving image information updating unit 69 receives moving image content distributed from the content distribution server 2 via the network connection terminal NETWORK of the projector 4 and stores the moving image content in the moving image information storage unit 68 to update the moving image content. It is.

Next, the operation of the projector 4 described above will be described based on the flowchart shown in FIG.
As shown in FIG. 1, in a state where an image output device 5 such as a PC is connected to the projector 4 and an image signal is input from the image output device 5 to the projector 4, the image signal monitoring unit 66 performs image signal input. The image signal input to the means 61 is monitored to determine whether or not the input of the image signal is stopped (processing S1).
If it is determined that the input of the image signal is stopped, the moving image information reproduction unit 67 reads the moving image content stored in the moving image information storage unit 68 (processing S2), and the decoder 63 reads the read moving image content. A reproduction instruction for decoding is performed (process S3), and the decoder 63 decodes the moving image content based on this instruction (process S4).

The image processing means 64 performs predetermined image processing on the image signal decoded by the decoder 63 and then outputs it to the liquid crystal panel driving means 65. The liquid crystal panel driving means 65 drives the liquid crystal panel 7 based on this. Then, the moving image content is displayed (process S5).
During the display of the moving image information, the image signal monitoring means 66 monitors whether or not the input of the image signal from the input terminal VIDEO and PC has been restored (step S6), and if it is in the stopped state, displays the moving image content. If it continues and is in the return state, the reproduction by the moving picture information reproduction means 67 is stopped, and the display is switched to the display based on the image signal from the input terminal VIDEO and PC.

Next, the distribution of the moving image content from the content distribution server 2 and the updating of the moving image information in the projector 4 will be described based on the flowchart shown in FIG.
The content distribution means 22 of the content distribution server 2 searches the projector database 21 and identifies the projector 4 that distributes the moving image content (processing S7).
When the distribution destination projector 4 is specified, the content distribution unit 22 transmits the moving image content to be distributed to the projector 4 via the network 3 (processing S8).
During this time, the moving image information updating unit 69 of the projector 4 monitors whether or not content distribution has been made to the network connection terminal NETWORK (processing S9), and if it detects reception of the moving image content transmitted from the content distribution server 2, the moving image information storage unit The newly received moving image content is written in 68, and the moving image content is updated.

By adopting such a system, when new video content is appropriately distributed from the content distribution server 2 and the input of the image signal to the input terminal VIDEO, PC, etc. is stopped by the projector 4, the video content updated appropriately Is automatically displayed as a projection image of the projector 4, so that even if the input of the image signal is in a stopped state, the observer does not feel useless.
In addition, by appropriately distributing video content such as commercials, the projector 4 itself functions as an advertising medium. Therefore, the commercial provider bears a part of the price of the projector 4 as an advertising fee. It can be expected to reduce the market price of the projector 4.

It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
In the embodiment, the projector 4 automatically displays the moving image content when the input of the image signal is stopped. However, the present invention is not limited to this, and a thin large screen such as a liquid crystal display or a plasma display. The present invention may also be adopted for this image display apparatus.
In the embodiment, the content distribution server 2 is configured to distribute video content such as commercials. However, the content distribution server 2 is not limited to this, and distributes normal moving image content and video content that displays character information. It may be.
In addition, the specific structure, shape, and the like in the implementation of the present invention may be other structures as long as the object of the present invention can be achieved.

The schematic diagram showing the structure of the system which concerns on embodiment of this invention. The block diagram showing the control system of the image display apparatus in the said embodiment. The flowchart for demonstrating the effect | action of the said embodiment. The flowchart for demonstrating the update of the moving image information in the said embodiment.

Explanation of symbols

  2 ... content distribution server, 3 ... network, 4 ... projector, 6 ... control means, 7 ... liquid crystal panel, 61 ... image signal input means, 62 ... RGB / color difference signal conversion means, 63 ... decoder, 64 ... image processing means, 65 ... Liquid crystal panel driving means, 66 ... Image signal monitoring means, 67 ... Movie information reproduction means, 68 ... Movie information storage means, 69 ... Movie information update means

Claims (6)

Image display comprising image signal input means for inputting an image signal, image display means for displaying an image based on the input image signal, and control means for controlling the image signal input means and the image display means A device,
The control means includes
Moving image information storage means storing moving image information to be displayed on the image display means;
Image signal monitoring means for monitoring an image signal input to the image signal input means;
A video information reproducing unit that reads out and reproduces the moving image information stored in the moving image information storage unit when the image signal monitoring unit determines that the input of the image signal is stopped; apparatus. The image display device according to claim 1,
The image display device is connected to a content distribution server that distributes moving image information via a network.
The control means includes
An image display device comprising: moving image information updating means for updating moving image information stored in the moving image information storage means when moving image information is distributed from the content distribution server. Image display comprising image signal input means for inputting an image signal, image display means for displaying an image based on the input image signal, and control means for controlling the image signal input means and the image display means An image display method executed on an apparatus,
The control means is
An image signal monitoring step input to the image signal input means;
An image display method characterized in that, when it is determined that the input of an image signal has been stopped, a moving image information reproduction step of reading out and reproducing moving image information from moving image information storage means in which moving image information is stored in advance. The image display method according to claim 3,
The image display device is connected to a content distribution server that distributes video information via a network,
The control means is
When the moving image information is distributed by the content distribution server, the moving image information updating step of updating the moving image information stored in the moving image information storage unit is executed. An image comprising image signal input means for inputting an image signal, image display means for displaying an image based on the input image signal, and control means for controlling the layer signal input means and the image display means A program executed by the control means of the display device,
The program according to claim 3 or 4, wherein the control means executes the image display method according to claim 3 or 4.   A computer-readable recording medium storing the program according to claim 5.

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