JP2009186890A - Image supply device, program and information storage medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image supply device or the like capable of lightening processing load when muting is set. <P>SOLUTION: A PC 200 includes: a decision part 240 deciding whether to perform muting setting operation showing a muting instruction of an image for a projector 100 based on operation information; a display part 290 displaying an image written in a plotting memory 260; a capture part 220 capturing at least a part of the image in the plotting memory 260 and generating image information, and stopping generating the image information if the muting setting operation is performed; a storage part 270 storing muted image data 272 showing that the muting setting operation has been performed; and a transmission part 210 transmitting the image information to the projector 100 and also transmitting the muted image data 272 to the projector 100 instead of the image information when the muting setting operation is performed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

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

For example, as described in Japanese Patent Application Laid-Open No. 2006-58668, image information of an image displayed on a PC (Personal Computer) is transmitted to the projector via the network, and the projector is displayed on the PC. The same image as the currently displayed image may be displayed. An image supply device such as a PC may transmit an image mute setting instruction command in a display device such as a projector.
JP 2006-58668 A

  However, the mute setting instruction command or the like can be transmitted from the image supply device to the display device when the mute setting instruction command or the like can be mutually transmitted and interpreted, and only the image information transmission / reception function can be performed. Otherwise, it is impossible for the image supply device to send a command to the display device to give a mute setting instruction.

  Even when the mute setting instruction command and the like can be mutually transmitted and interpreted and the command can be interpreted, the image supply device continues to generate image information after performing the mute setting instruction. There was an unnecessary processing load.

  An object of the present invention is to provide an image supply device, a program, and an information storage medium that can perform mute settings for a display device more universally and can reduce the processing load at the time of mute settings. .

  In order to solve the above problems, an image supply device according to the present invention includes a determination unit that determines whether or not a mute setting operation indicating an image mute instruction to a display device has been performed based on operation information in the image supply device, and a drawing A display unit for displaying an image written in a memory; and at least a part of the image in the drawing memory is captured to generate image information indicating at least a part of the image, and the mute setting operation is performed. A capture unit that stops generation of the image information, a storage unit that stores mute image data indicating that the mute setting operation has been performed, the image information is transmitted to the display device, and the mute When the setting operation is performed, the mute image data is transmitted to the display device instead of the image information. A transmission unit that, characterized in that it comprises a.

  According to another aspect of the present invention, there is provided a program for muting an image on a display device in a computer included in the image supply device including a drawing memory, a storage unit, a transmission unit, and a display unit based on operation information in the image supply device. Determining whether a mute setting operation indicating an instruction has been performed; controlling the display unit to display an image written in the drawing memory; and at least part of the image in the drawing memory Generating image information indicating at least a part of the image and stopping the generation of the image information when the mute setting operation is performed, and the mute setting operation for the storage unit. A step of storing mute image data indicating that the transmission has been performed; Causing the image information to be transmitted to a display device, and performing a control to transmit the mute image data to the display device instead of the image information when the mute setting operation is performed. Features.

  An information storage medium according to the present invention is an information storage medium that stores a computer-readable program included in an image supply device that includes a drawing memory, a storage unit, a transmission unit, and a display unit. The program is memorized.

  According to the present invention, when the mute setting operation is performed, the image supply device transmits the mute image data to the display device, thereby using the same transmission path as the transmission path of the image information. Therefore, the mute setting for the display device can be performed more generally.

  Further, according to the present invention, the image supply device can reduce the processing load at the time of mute setting by stopping the generation and transmission of image information when a mute setting operation is performed.

  Further, the determination unit determines whether or not a mute release operation indicating an image mute release instruction is performed on the display device based on the operation information, and the capture unit performs the mute release operation. In addition, the capture of the image may be resumed, and the transmission unit may transmit the image information to the display device instead of the mute image data when the mute release operation is performed.

  According to this, even when the image supply device executes processing for reducing the processing load at the time of mute setting, the image supply device can quickly resume normal image display on the display device when mute setting is canceled.

  In addition, the determination unit causes the capture unit to generate image information indicating the entire image in the drawing memory when the image information is transmitted for the first time and when supply of the image information is resumed, and when the image information is transmitted for the first time. In addition, when the supply of the image information is not resumed, image information indicating an image of a region that has changed compared to the previous drawing in the drawing memory may be generated.

  According to this, the image supply apparatus can reduce the processing load during communication by transmitting image information indicating an image of a changed area, and is a case where supply of image information is stopped. Even when the supply of image information is resumed, an appropriate image can be displayed on the display device by transmitting image information indicating the entire image in the drawing memory.

  In addition, the transmission unit may stop transmission after the transmission of the mute image data until the mute release operation is performed.

  According to this, the image supply device can reduce the transmission load by stopping the transmission until the mute release operation is performed after the transmission of the mute image data.

  Embodiments in which the present invention is applied to a PC will be described below 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.

  FIG. 1 is a functional block diagram of the PC 200 in the present embodiment. The PC 200, which is a kind of image supply device, includes a transmission unit 210 that transmits (supplies) image information and the like to the projector 100, which is a kind of display device, and a user operation (for example, an operation using a keyboard, a mouse, a microphone, and the like). The operation unit 230 that generates operation information indicating the operation content according to the operation based on the voice instruction used) and the mute setting operation indicating the image mute instruction to the projector 100 is determined based on the operation information. It is comprised including the determination part 240 to perform.

  The PC 200 also includes a drawing memory 260, an image generation unit 250 that generates an image and writes the image in the drawing memory 260, a display unit 290 that displays the image written in the drawing memory 260, and at least one of the images in the drawing memory 260. A capture unit 220 that captures the image and generates image information indicating at least a part of the image, and a storage unit 270 that stores mute image data 272 indicating that the mute setting operation has been performed. .

  As the data format of the mute image data 272, for example, image data that can be used as it is by the projector 100 (for example, image data in RGB format), image data that can be developed and used by the projector 100 (for example, PNG ( Portable Network Graphics) format image data, compressed image data, encrypted data, etc.), moving image data, etc. may be employed.

  The capture unit 220 also includes the entire image generated in the previous frame (for example, n−1 frames, where n is an integer of 2 or more) and the current frame (for example, n frames) in the drawing memory 260. The whole image generated in (1) is compared, and image information indicating the image of the changed region (changed region) is generated. In addition, the capture unit 220 captures the entire image in the drawing memory 260 in the first case and when the mute setting is canceled to generate image information indicating the entire image, and displays the image of the change area in the second and subsequent times. Generate image information. The drawing memory 260 has a capacity capable of storing image information for at least two frames.

  In addition, each of these units may be mounted using the following hardware, for example. For example, the transmission unit 210 is a wired communication unit, a wireless communication unit, the capture unit 220 is an image processing circuit, a VRAM, the operation unit 230 is a button, a remote controller, the determination unit 240 is a CPU, a RAM, an image, etc. An image processing circuit or the like may be used as the generation unit 250, a VRAM or the like as the drawing memory 260, a RAM or the like as the storage unit 270, and a liquid crystal display or the like as the display unit 290.

  Further, the PC 200 may implement functions such as the determination unit 240 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, and the program reading method can be a contact method or a non-contact method. Good.

  Next, an image processing procedure using these units will be described. FIG. 2 is a flowchart showing a processing procedure in the present embodiment. Based on the operation information from the operation unit 230, the determination unit 240 of the PC 200 determines whether or not a mute setting operation has been performed (step S1). For example, when the PC 200 is a notebook PC as the mute setting operation, an operation of simultaneously pressing the “Fn” key and the “A” key of the keyboard may be applied.

  When the mute operation is performed, the determination unit 240 sets the state of the PC 200 indicated by the flag and the register in the determination unit 240 to the supply interruption state (step S2). In this case, the transmission unit 210 may be mute image data 272 (information obtained by encrypting, compressing, dividing, adding header information, etc. to the mute image data 272 in accordance with an instruction from the determination unit 240. .) Is transmitted to the projector 100 (step S3). The PC 200 may transmit the mute image data 272 only when the mute setting operation is performed, or after the mute setting operation is performed, the mute release operation is performed. The mute image data 272 may be transmitted at regular intervals until the operation is performed.

  The projector 100 receives the mute image data 272 and displays a mute image based on the mute image data 272. FIG. 3 is a diagram illustrating an example of the mute image 400 in the present embodiment.

  For example, the projector 100 displays a mute image 400 that is entirely black based on the mute image data 272. As a result, the projector 100 is in the same state as the state where the mute operation is performed.

  If the mute operation has not been performed, the determination unit 240 determines whether a mute release operation has been performed based on the operation information from the operation unit 230 (step S4). When the mute release operation is performed, the determination unit 240 sets the state of the PC 200 indicated by the flag and the register in the determination unit 240 to the supply enabled state, and cancels the supply interruption state (step S5). For example, when the PC 200 is a notebook PC, an operation of simultaneously pressing the “Fn” key and the “Q” key on the keyboard may be applied as the mute release operation.

  When the determination of the above operation information is completed, the determination unit 240 determines whether or not the current state of the PC 200 is a supply interruption state (step S6). When not in the supply interruption state, the capture unit 220 captures the image of the change area in the drawing memory 260 where the image is generated by the image generation unit 250, and generates image information (step S7). Note that a specific method for detecting the change region is described in Japanese Patent Application Laid-Open No. 2006-58668, and a description thereof will be omitted.

  The transmission unit 210 transmits the image information generated by the capture unit 220 to the projector 100 (step S8). The projector 100 receives the image information, and generates and displays an image by overwriting the current image with the changed portion of the image represented by the image information based on the image information. In the supply interruption state, the PC 200 does not execute the processes of steps S7 and S8.

  Regardless of the state determined by the determination unit 240, the display unit 290 displays the image generated by the image generation unit 250 in the drawing memory 260 (step S9). That is, in the supply interruption state, the PC 200 interrupts generation and transmission of image information to be transmitted to the projector 100, but continues to generate and display images.

  The PC 200 determines whether or not the image processing should be terminated by detecting that the power button of the PC 200 is turned off (step S10). For example, if the power button is turned off, the image processing is terminated. . Note that the PC 200 repeatedly executes the above-described processing (steps S1 to S10) when the image processing is not ended.

  As described above, according to the present embodiment, the PC 200 uses the same transmission path as the transmission path of the image information by transmitting the mute image data 272 to the projector 100 when the mute setting operation is performed. Thus, the mute image data 272 can be transmitted. In addition, the PC 200 can display the mute image 400 based on the mute image data 272 on the projector 100, thereby realizing the same state as the state in which the mute operation is performed on the projector 100.

  As a result, the PC 200 can perform mute settings for the projector 100 in a more versatile manner. Further, the user can perform mute setting for the projector 100 only by operating the keyboard of the PC 200 without using the buttons on the projector 100 main body or the remote controller of the projector 100.

  Further, according to the present embodiment, the PC 200 can reduce the processing load at the time of mute setting by stopping the generation and transmission of image information when a mute setting operation is performed. Thereby, the power saving of PC200 is also realizable.

  Further, according to the present embodiment, the PC 200 restarts generation and transmission of image information when a mute release operation is performed even when a process for reducing the processing load is performed at the time of mute setting. When the mute setting is canceled, the projector 100 can quickly resume normal image display.

  In addition, according to the present embodiment, the PC 200 can reduce the processing load during communication by transmitting image information indicating an image of a changed area, and can stop the supply of image information. Even so, it is possible to display an appropriate image on the projector 100 by transmitting the image information indicating the entire image in the drawing memory when the supply of the image information is resumed.

  Further, according to the present embodiment, the PC 200 can reduce the transmission load by stopping the transmission until the mute release operation is performed after the transmission of the mute image data 272.

  In addition, application of this invention is not limited to the Example mentioned above, A various deformation | transformation is possible. For example, the mute image 400 is not limited to a black image as a whole, and various images can be employed. In other words, the image mute function in the present embodiment is not limited to the image erasing function, but may have a function of displaying different types of images instead of the currently displayed image.

  FIG. 4 is a diagram illustrating another example of the mute image 401 in the present embodiment. FIG. 5 is a diagram illustrating another example of the mute image 402 in the present embodiment. FIG. 6 is a diagram illustrating another example of the mute image 403 in the present embodiment.

  For example, the mute image 401 shows a so-called user logo image. The mute image 402 indicates that the user is taking a break, the current time, and the scheduled resumption time of the conference. Note that when such a current time is indicated, the image generation unit 250 determines the current time based on a value of a system timer or the like inside the PC 200, and generates image information for displaying the mute image 402. May be.

  The mute image 403 is an image showing the agenda of the meeting. In addition, when showing the image which shows the content of such a presentation, or a user logo image, the image generation part 250 displays the image information for displaying the mute images 401 and 403 based on the image data memorize | stored in the memory | storage part 270. It may be generated.

  Further, the mute setting operation and the mute release operation may be the same operation. For example, the determination unit 240 may count the number of mute operations. If the number of mute operations is an odd number, it may be determined as a mute setting operation, and if the number of mute operations is an even number, it may be determined as a mute release operation.

  Further, the display device is not limited to the projector 100, and various display devices such as a television and a liquid crystal display can be employed. The image supply device is not limited to the PC 200, and various devices such as a mobile phone, a game device, and a DVD player can be employed.

  The projector 100 may be a projector using a liquid crystal panel, LCOS (Liquid Crystal On Silicon), DMD (Digital Micromirror Device) as an optical modulator. DMD is a trademark of Texas Instruments Incorporated. Further, the functions of the PC 200 may be distributed and implemented in a plurality of devices. For example, the functions of the image generation unit 250 and the drawing memory 260 may be provided on a DVD player, the display unit 290 may be provided on a television, and the transmission unit 210, the capture unit 220, the determination unit 240, and the storage unit 270 may be provided on a PC. .

It is a functional block diagram of PC in a present Example. It is a flowchart which shows the process sequence in a present Example. It is a figure which shows an example of the mute image in a present Example. It is a figure which shows another example of the mute image in a present Example. It is a figure which shows another example of the mute image in a present Example. It is a figure which shows another example of the mute image in a present Example.

Explanation of symbols

  100 projector (display device), 200 PC (image supply device), 210 transmission unit, 220 capture unit, 230 operation unit, 240 determination unit, 250 image generation unit, 260 drawing memory, 270 storage unit, 272 mute image data, 290 Display unit, 300 information storage medium, 400-403 mute image

Claims (6)

A determination unit that determines whether or not a mute setting operation indicating an image mute instruction to the display device has been performed based on operation information in the image supply device;
A display unit for displaying an image written in the drawing memory;
A capture unit that captures at least a part of the image in the drawing memory to generate image information indicating at least a part of the image, and stops generation of the image information when the mute setting operation is performed; ,
A storage unit for storing mute image data indicating that the mute setting operation has been performed;
A transmitter that transmits the image information to the display device and transmits the mute image data to the display device instead of the image information when the mute setting operation is performed;
An image supply apparatus comprising: The image supply device according to claim 1.
The determination unit determines whether or not a mute release operation indicating an image mute release instruction in the display device has been performed based on the operation information,
The capture unit resumes capturing the image when the mute release operation is performed,
The image supply device, wherein the transmission unit transmits the image information to the display device instead of the mute image data when the mute release operation is performed. The image supply device according to claim 2,
The determination unit causes the capture unit to generate image information indicating the entire image in the drawing memory when the image information is transmitted for the first time and when supply of the image information is resumed, and not when the image information is transmitted for the first time. An image supply device that generates image information indicating an image of a region that has changed as compared to the previous drawing in the drawing memory when the supply of the image information is not resumed. The image supply device according to claim 2,
The image supply device, wherein the transmission unit stops transmission until the mute release operation is performed after the transmission of the mute image data. In a computer having an image supply device including a drawing memory, a storage unit, a transmission unit, and a display unit,
Determining whether or not a mute setting operation indicating an image mute instruction to the display device has been performed based on operation information in the image supply device;
Controlling the display unit to display an image written in the drawing memory;
Capturing at least part of the image in the drawing memory to generate image information indicating at least part of the image, and stopping generation of the image information when the mute setting operation is performed;
A step of controlling the storage unit to store mute image data indicating that the mute setting operation has been performed;
Control the transmission unit to transmit the image information to the display device and to transmit the mute image data to the display device instead of the image information when the mute setting operation is performed. And a program for executing the steps. An information storage medium storing a computer-readable program included in an image supply device including a drawing memory, a storage unit, a transmission unit, and a display unit,
An information storage medium storing the program according to claim 5.

Images