JP5382284B2 - Projector, program, and projection method - Google Patents

Description

  The present invention relates to a projector, a program, and a projection method for adjusting the resolution of an image.

  Projectors that project manufacturer names, user logos, and the like at startup are provided. For example, Japanese Patent Application Laid-Open No. 2001-92408 describes a projector that writes image data (setting image data) such as a user logo in a flash ROM.

Also, as described in Japanese Patent Application Laid-Open No. 2007-140180, there are cases where the user sets the display resolution for reasons such as handling special image signals.
JP 2001-92408 A JP 2007-140180 A

  When a setting image based on such setting image data is projected, the setting image is projected at a fixed resolution regardless of the resolution of the original setting image data. However, in reality, the resolution of the original setting image data is not fixed, and if it is projected at a fixed resolution, part of the information of the original setting image data may be lost. . Specifically, for example, when the resolution of the original setting image data is 800 × 700 pixels and the fixed resolution is 800 × 600 pixels, information for 800 × 100 pixels is lost.

  Further, when the display resolution of the projector is set by the user, there are situations where the set resolution is not a standard resolution. Specifically, for example, when the fixed resolution for displaying the original setting image data is 800 × 600 pixels and the setting resolution is 800 × 500 pixels, if the projector projects the setting image at the setting resolution, 800 Information for × 100 pixels is lost.

  In addition, the original setting image data may be deformed (pixel thinning, interpolation, etc.) depending on the difference between the resolution of the original setting image data and the setting resolution. However, if the setting image data is deformed, the image quality deteriorates. End up.

  An object of the present invention is to provide a projector, a program, and a projection method capable of projecting an image with a desired set resolution when an image based on set image data is projected.

  In order to solve the above problems, a projector according to the present invention includes a storage unit that stores setting image data for generating a setting image, and the setting image is generated at a setting resolution of the setting image and includes the setting image. An image generation unit that executes processing for generating an initial image or processing for generating the initial image at the set resolution of the initial image based on the set image data, and the initial image at start-up or when an instruction to project the initial image is given And a projection unit for projecting.

  The program according to the present invention is a program readable by a computer included in a projector including a storage unit and a projection unit, and the computer stores setting image data for generating a setting image in the storage unit. A storage control unit, a process of generating the setting image at a setting resolution of the setting image and generating an initial image including the setting image, or a process of generating the initial image at the setting resolution of the initial image. An image generation unit that is executed based on data, and a projection control unit that causes the projection unit to project the initial image at startup or when the initial image is instructed to project.

  Further, the projection method according to the present invention is a method for projecting a resolution setting image for setting the setting resolution of the setting image or the setting resolution of the initial image including the setting image in the projection method by the projector, and setting the setting resolution. A setting for generating the setting image by inputting resolution information, generating the setting image at the setting resolution and generating the initial image, or generating the initial image at the setting resolution of the initial image. It is executed based on image data, and the initial image is projected when the projector is activated or when the initial image projection is instructed.

  According to the present invention, when projecting a setting image based on setting image data, the projector can project the setting image with a desired setting resolution.

  In addition, the projector may include an image data input unit that inputs the setting image data and stores it in the storage unit.

  Accordingly, the projector can project the setting image with a desired setting resolution when projecting the setting image based on the updateable setting image data.

  The projector may include an information input unit that inputs setting resolution information indicating the setting resolution, and the projection unit may project a resolution setting image for setting the setting resolution.

  According to this, the projector can project the setting image with the setting resolution set by the user.

  In addition, the projector determines a resolution determination unit that determines a resolution of the setting image data, and determines whether a difference between the resolution of the setting image data and the setting resolution of the setting image exceeds a first reference value. A difference determination unit, and the image generation unit generates the setting image at the resolution of the setting image data determined by the resolution determination unit when the difference exceeds the first reference value. If the difference does not exceed the first reference value, the setting image may be generated with a setting resolution of the setting image data.

  According to this, the projector can project an image with a desired setting resolution or the original setting image resolution while suppressing deterioration in image quality and lack of information.

  Further, the difference determination unit is configured to set a difference between a horizontal resolution of the setting image data and a setting horizontal resolution of the setting image that exceeds a second reference value, or a setting of the vertical resolution of the setting image data and the setting image. When the difference from the vertical resolution exceeds the third reference value, it may be determined that the difference exceeds the first reference value.

  According to this, the projector can project an image with a desired setting resolution or the original setting image resolution while suppressing deterioration in image quality and lack of information.

  Embodiments in which the present invention is applied to a projector 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.

(First embodiment)
FIG. 1 is a diagram illustrating a projection state of an initial image 300 in the first embodiment. The projector 100 projects an initial image 300 toward the screen 10 when starting up or when instructing projection. The initial image 300 includes a setting image 310 indicating a user logo or the like. The projector 100 according to the present embodiment has a function capable of arbitrarily setting the resolution of the setting image 310, a function of adjusting the resolution of the setting image 310 according to the difference between the actual resolution and the setting resolution of the setting image 310, and the like.

  Next, functional blocks of projector 100 having such a function will be described. FIG. 2 is a functional block diagram of the projector 100 in the first embodiment. The projector 100 includes an image data input unit 110 that inputs various image data (for example, RGB signals) from a PC (Personal Computer) or the like, and an information input unit 120 that inputs setting resolution information indicating a setting resolution by a user. The storage unit 130 stores various data, the resolution determination unit 140, the difference determination unit 150, the image generation unit 160, and the projection unit 190.

  The storage unit 130 also includes setting image data 131 for generating the setting image 310, actual resolution data 132 indicating the actual resolution of the setting image 310, setting resolution data 133 indicating the setting resolution of the setting image 310, and projection time. Determination resolution data 134 indicating the resolution of the setting image 310, resolution setting image data 135 for generating a resolution setting image, and the like are stored.

  Further, as hardware for mounting the functions of these units in the projector 100, for example, the following may be employed. For example, the image data input unit 110 is an image signal input terminal, an AD converter, the information input unit 120 is a key, a remote controller (remote controller), the storage unit 130 is a non-volatile memory, an HDD, etc., a resolution determination unit 140, The difference determination unit 150 may be a CPU, the image generation unit 160 may be an image processing circuit, and the projection unit 190 may be a lamp, a liquid crystal panel, a drive circuit, a projection lens, or the like.

  Further, the projector 100 may implement the functions of each unit by reading a program for implementing the functions of these units in the projector 100 from the information storage medium 200. As such an information storage medium 200, for example, a CD-ROM, DVD-ROM, ROM, RAM, HDD or the like can be applied, and the program reading method may be a contact method or a non-contact method. Good.

  Next, processing procedures using these units will be described. In this embodiment, the projector 100 first causes the user to input the set image data 131 and the set resolution as a preparation stage, and generates the determined resolution data 134 according to the actual resolution and the set resolution.

  FIG. 3 is a flowchart showing a processing procedure in a preparation stage in the first embodiment. The user operates the PC to determine the setting image 310 to be projected when the projector 100 is activated, and outputs setting image data 131 to the projector 100 from the PC. The image data input unit 110 inputs the setting image data 131 from the PC and stores it in the storage unit 130 (step S1).

  The resolution determination unit 140 determines the actual resolution (actual resolution) of the setting image 310 based on the setting image data 131, and stores it as the actual resolution data 132 in the storage unit 130 (step S2). In this embodiment, it is assumed that the resolution of the initial image 300 is 1920 × 1080 pixels, and the actual resolution of the setting image 310 is 1024 × 768 pixels.

  In addition, the user sets the resolution for displaying the setting image 310 in the projector 100 using the PC. When receiving a resolution setting instruction from the PC, the image generation unit 160 generates a resolution setting image based on the resolution setting image data 135, and the projection unit 190 projects the resolution setting image (step S3).

  FIG. 4 is a diagram illustrating an example of the resolution setting image 320 in the first embodiment. FIG. 5 is a diagram showing another example of the resolution setting image 321 in the first embodiment. In the resolution setting image 320, a plurality of options indicating general resolutions and a “resolution specification” option for the user to specify an arbitrary resolution are displayed. The user operates the remote controller of projector 100 to select a desired option.

  For example, when the user selects “resolution designation”, the image generation unit 160 generates the resolution setting image 321 shown in FIG. 5, and the projection unit 190 projects the resolution setting image 321. When the user selects an option other than “resolution designation” such as “800 × 600”, the resolution setting image 321 is not projected.

  The resolution setting image 321 is formed so that the horizontal resolution can be arbitrarily set from 480 to 1920 and the vertical resolution can be arbitrarily set from 300 to 1200. As a designation method, a method of moving a slide bar, a method of directly inputting a numerical value, a method of changing the size of a frame indicating the size of an image, or the like can be adopted. In the present embodiment, it is assumed that the user sets the horizontal resolution to 480 and the vertical resolution to 300.

  The information input unit 120 inputs set resolution information indicating the set resolution corresponding to the resolution setting operation (the information input unit 120 may generate the resolution according to the resolution setting operation), and stores it as the set resolution data 133. Store in the unit 130 (step S4).

  The difference determination unit 150 compares the actual resolution data 132 and the set resolution data 133 (step S5). More specifically, for example, the difference determination unit 150 compares the total number of pixels of the actual resolution with the total number of pixels of the set resolution, and calculates a difference by dividing the larger total number of pixels by the smaller number of combined pixels. Degree. For example, in this embodiment, the total number of pixels of the actual resolution is 1024 × 768 = 786432, and the total number of pixels of the set resolution is 800 × 300 = 2240. In this case, the dissimilarity is about 3.28.

  And the difference determination part 150 determines whether a difference degree is below a 1st reference value (step S6). In the present embodiment, it is assumed that the first reference value is 2. Note that the difference calculation method and the reference value are arbitrary.

  In the present embodiment, since the degree of difference is not 2 or less, the difference determination unit 150 stores the actual resolution data 132 in the storage unit 130 as the determined resolution data 134 (step S8). That is, when the degree of difference is greater than 2, the difference between the actual resolution and the set resolution is twice or more, so even if the set image 310 is displayed at the set resolution, information loss may increase or the initial image 300 may be displayed. The ratio of the setting image 310 to the image becomes very small.

  FIG. 6 is a diagram showing an original resolution setting image 310 in the first embodiment. FIG. 7 is a diagram illustrating a setting resolution setting image 311 in the first embodiment. For example, the setting image 310 has 1024 pixels in the horizontal direction and 768 pixels in the vertical direction, and the setting image 311 has 800 pixels in the horizontal direction and 300 pixels in the vertical direction. In this case, the content of the setting image 311 displayed at the setting resolution is greatly different from that of the original setting image 310.

  When it is determined that the disadvantage is great for such a user, the projector 100 uses the actual resolution instead of the set resolution because the user is likely to set the set resolution by mistake.

  On the other hand, when the degree of difference is equal to or less than the first reference value, the difference determination unit 150 stores the set resolution data 133 as the determined resolution data 134 in the storage unit 130 (step S7). In other words, when the difference between the actual resolution and the set resolution is small, the projector 100 uses the set resolution.

  The projector 100 completes the preparation for projecting the initial image 300 including the setting image 310 through the above processing. Next, a processing procedure in the normal image projection stage after the preparation stage will be described. In this embodiment, it is assumed that the initial image 300 is projected when the projector 100 is activated.

  FIG. 8 is a flowchart showing a processing procedure at the normal image projection stage in the first embodiment. The image generation unit 160 determines whether the projector 100 is activated (step S11). When the projector 100 is activated, the image generation unit 160 generates the setting image 310 with the determined resolution based on the determined resolution data 134 and the setting image data 131 (step S12).

  Then, the image generation unit 160 generates an initial image 300 including the setting image 310, and the projection unit 190 projects the initial image 300 (step S13). Thereby, the projector 100 can show a user logo or the like prior to the normal image to the user.

  After projecting the initial image 300, the image generation unit 160 generates a normal image based on a normal image signal input from the PC to the image data input unit 110, and the projection unit 190 projects the normal image. (Step S14).

  As described above, according to the present embodiment, when the projector 100 projects the setting image 310 based on the setting image data 131 stored in the storage unit 130, the projector 100 projects the setting image 310 at a user's desired setting resolution. can do. Further, according to the present embodiment, when the setting image 310 based on the updatable setting image data 131 is projected, the setting image 310 can be projected with a desired setting resolution. This eliminates the need for the user to generate a user logo image in accordance with a fixed resolution as in a conventional projector, generates a user logo image at a free resolution, and displays the setting image 310 on the projector 100 at the resolution. Can be projected.

  Further, according to the present embodiment, when the resolution determination unit 140 determines the resolution of the setting image data 131, the projector 100 receives the setting image data 131 having a resolution that did not exist when the projector 100 was sold. Even so, the setting image 310 can be projected with an appropriate resolution.

  Further, according to the present embodiment, the projector 100 determines the resolution to be applied by comparing the resolution difference with the reference value, thereby suppressing the deterioration of the image quality and the lack of information, and the desired set resolution or An image can be projected at the resolution of the original setting image 310.

(Second embodiment)
In the first embodiment, the projector 100 determines the resolution to be applied to the setting image 310 in the preparation stage, but the resolution may be determined in the image projection stage. The determination of the degree of difference may be performed for each of the horizontal resolution and the vertical resolution. Next, an embodiment will be described in which the projector 100 determines the resolution to be applied to the setting image 310 in the image projection stage, and determines the degree of difference for each of the horizontal resolution and the vertical resolution.

  FIG. 9 is a flowchart showing a processing procedure in a preparation stage in the second embodiment. The image data input unit 110 receives the setting image data 131 from the PC and stores it in the storage unit 130 (step S21). When receiving a resolution setting instruction from the PC, the image generation unit 160 generates a resolution setting image based on the resolution setting image data 135, and the projection unit 190 projects the resolution setting image (step S22).

  The information input unit 120 inputs the set resolution information indicating the set resolution corresponding to the resolution setting operation, and stores it in the storage unit 130 as the set resolution data 133 (step S23).

  Through the above processing, the projector 100 can store the setting image data 131 and the setting resolution data 133 in the storage unit 130. Next, a processing procedure in the normal image projection stage will be described.

  FIG. 10 is a flowchart illustrating a processing procedure in a normal image projection stage according to the second embodiment. The resolution determination unit 140 determines whether the projector 100 has been activated (step S31). When the projector 100 is activated, the resolution determination unit 140 determines the actual resolution of the setting image 310 based on the setting image data 131, and stores the actual resolution data 132 in the storage unit 130 (step S32).

  The difference determination unit 150 compares the actual resolution data 132 and the set resolution data 133 (step S33). Specifically, the difference determination unit 150 determines whether or not the difference in the horizontal direction is less than or equal to the second reference value (step S34). If the difference in the horizontal direction is less than or equal to the second reference value, the difference is determined in the vertical direction. It is determined whether or not the degree of difference is equal to or less than the third reference value (step S35).

  More specifically, for example, the difference determination unit 150 compares the number of pixels in the horizontal or vertical direction of the actual resolution with the number of pixels in the horizontal or vertical direction of the set resolution, and sets the larger number of pixels to the smaller one. The value divided by the number of pixels is the difference. In the present embodiment, it is assumed that the second reference value and the third reference value are 2.

  For example, in this embodiment, the number of pixels in the horizontal direction of the actual resolution is 1024, the number of pixels in the horizontal direction of the set resolution is 800, the dissimilarity is 1.28, and the dissimilarity in the horizontal direction is the second. Is below the reference value. On the other hand, the number of pixels in the vertical direction of the actual resolution is 768, the number of pixels in the vertical direction of the set resolution is 300, the dissimilarity is 2.56, and the dissimilarity in the vertical direction exceeds the third reference value. ing.

  When the horizontal dissimilarity exceeds the second reference value or when the vertical dissimilarity exceeds the third reference value, the image generation unit 160 adds the setting image data 131 and the actual resolution data 132 to each other. Based on the actual resolution, the setting image 310 is generated (step S37).

  On the other hand, when the horizontal difference is less than or equal to the second reference value and the vertical difference is less than or equal to the third reference value, the image generation unit 160 sets the set image data 131 and the set resolution data 133. Based on the above, the setting image 310 is generated with the setting resolution (step S36).

  Then, the image generation unit 160 generates an initial image 300 including the setting image 310, and the projection unit 190 projects the initial image 300 (step S38). After projecting the initial image 300, the image generation unit 160 generates a normal image based on a normal image signal input from the PC to the image data input unit 110, and the projection unit 190 projects the normal image. (Step S39).

  As described above, according to the present embodiment, the projector 100 has the same operational effects as the first embodiment. Further, according to the present embodiment, the projector 100 can execute processing without storing the determined resolution data 134 and the like.

  In the case of the first embodiment, even when the horizontal setting resolution is more than twice the actual resolution or the vertical setting resolution is more than twice the actual resolution, the degree of difference is the first. However, according to the present embodiment, the projector 100 can determine that the dissimilarity exceeds the second reference value or the third reference value in these cases as well. Therefore, the difference between the set resolution and the actual resolution can be determined more appropriately.

(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 information input unit 120 may input information indicating the above-described reference value from a PC or the like, and the difference determination unit 150 may perform the above-described determination using the input reference value. According to this, the projector 100 can improve the usability of the user's projector 100 (usability).

  For example, in the second embodiment, when the figure or character string included in the setting image 310 is horizontally long, there is no problem if the setting resolution and the actual resolution are different in the vertical direction, but they are different in the horizontal direction. Part of the figure or character string is missing. In such a case, the user sets the second reference value to a small value (compared to the third reference value), and the projector 100 performs the above-described determination using the input reference value, thereby obtaining information. Can be prevented from being lost.

  Further, the set resolution may indicate the resolution of the initial image 300. That is, for example, when the setting image 310 is not a part of the initial image 300 but the whole, the projector 100 may perform the above-described determination or the like for the setting resolution of the initial image 300.

  The projector 100 is not limited to a liquid crystal projector, and may be a projector using a DMD (Digital Micromirror Device), for example. DMD is a trademark of Texas Instruments Incorporated. Further, the function of the projector 100 may be distributed and implemented in a plurality of devices (for example, a PC and a projector).

It is a figure which shows the projection condition of the initial image in a 1st Example. It is a functional block diagram of the projector in a 1st Example. It is a flowchart which shows the process sequence in the preparation stage in a 1st Example. It is a figure which shows an example of the resolution setting image in a 1st Example. It is a figure which shows another example of the resolution setting image in a 1st Example. It is a figure which shows the setting image of the original resolution in a 1st Example. It is a figure which shows the setting image of the setting resolution in a 1st Example. It is a flowchart which shows the process sequence in the projection stage of the normal image in 1st Example. It is a flowchart which shows the process sequence in the preparation stage in a 2nd Example. It is a flowchart which shows the process sequence in the projection stage of the normal image in 2nd Example.

Explanation of symbols

  10 screen, 100 projector, 110 image data input unit, 120 information input unit, 130 storage unit, 131 set image data, 132 actual resolution data, 133 set resolution data, 134 determined resolution data, 135 resolution set image data, 140 resolution determination 150, difference determination unit, 160 image generation unit, 190 projection unit, 200 information storage medium, 300 initial image, 310-312 setting image, 320, 321 resolution setting image

Claims (6)

A storage unit for storing setting image data for generating a setting image;
A resolution determination unit for determining the resolution of the set image data;
An information input unit for inputting setting resolution information indicating the setting resolution of the setting image;
A difference determination unit that determines whether or not a difference indicating a ratio between the resolution of the setting image data and the setting resolution of the setting image exceeds a first reference value;
An image generation unit that performs processing for generating the setting image and generating an initial image of a predetermined resolution including the setting image;
A projection unit for projecting the initial image at startup or when instructing projection of the initial image;
Including
The image generation unit
If the difference exceeds the first reference value, the setting image is generated with the resolution of the setting image data determined by the resolution determination unit,
When the difference does not exceed the first reference value, an image of a region corresponding to the set resolution is generated as the set image among the set images having the resolution of the set image data . The projector according to claim 1, wherein
A projector including an image data input unit that inputs the setting image data and stores the set image data in the storage unit. The projector according to any one of claims 1 and 2,
The projection unit projects a resolution setting image for setting the setting resolution,
The projector, wherein the information input unit inputs setting resolution information indicating a setting resolution set in the resolution setting image. The projector according to any one of claims 1 to 3,
The difference determination unit dissimilarity representing the ratio between the set horizontal resolution of the horizontal resolution and the set image of the setting image data of vertical resolution and the setting image, or if the setting image data exceeds a second reference value A projector, characterized in that, when a dissimilarity representing a ratio to a set vertical resolution exceeds a third reference value, it is determined that the dissimilarity exceeds the first reference value. A program readable by a computer of a projector including a storage unit and a projection unit,
The computer,
A storage control unit that stores setting image data for generating a setting image in the storage unit;
A resolution determination unit for determining the resolution of the set image data;
An information input unit for inputting setting resolution information indicating the setting resolution of the setting image;
A difference determination unit that determines whether or not a difference indicating a ratio between the resolution of the setting image data and the setting resolution of the setting image exceeds a first reference value;
An image generation unit that performs processing for generating the setting image and generating an initial image of a predetermined resolution including the setting image;
Function as a projection control unit that causes the projection unit to project the initial image at start-up or when instructing projection of the initial image;
The image generation unit
If the difference exceeds the first reference value, the setting image is generated with the resolution of the setting image data determined by the resolution determination unit,
When the difference does not exceed the first reference value, a program that generates an image of an area corresponding to the set resolution among the set images of the resolution of the set image data as the set image . In the projection method using a projector,
Determine the resolution of the setting image data for generating the setting image,
Project a resolution setting image for setting the setting resolution of the setting image,
Input setting resolution information indicating the setting resolution set in the resolution setting image,
Determining whether the degree of difference representing the ratio between the resolution of the setting image data and the setting resolution of the setting image exceeds a first reference value;
When the difference exceeds the first reference value, the setting image is generated at the determined resolution of the setting image data to generate an initial image having a predetermined resolution including the setting image, and the difference is If the first reference value is not exceeded, an image of a region corresponding to the setting resolution is generated as the setting image among the setting images having the resolution of the setting image data, and an initial image having a predetermined resolution including the setting image is generated. And
A projection method, wherein the initial image is projected when the projector is started up or when the projection of the initial image is instructed.