JP2009223109A - Projector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a projector capable of preventing a user's ability for confirming an OSD image from being deteriorated when the environment for viewing and listening is changed. <P>SOLUTION: An image separation part 51 separates the information about image in an OSD region on which the OSD image is superposed from the information about input image when the OSD image is superposed on the input image. The image separation part 51 outputs the separated information about image in the OSD region into a buffer 53 and outputs the information about image in a background region on an outer side of the OSD image into an image quality adjusting and processing part 52, which adjusts and processes quality of image for the information about image in the background region and outputs the information about the processed image into an image synthesizing part 54. The buffer 53 stores the information about image in the OSD region temporarily and then outputs the information into the image synthesizing part 54, which synthesizes the information about image input from the image quality adjusting and processing part 52 and the information about image input from the buffer 53 and outputs the synthesized information about image into an image projecting part 10. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a projector that projects an image based on input image information.

As a projector that projects an image based on input image information, a projector that can adjust the image quality of a projected image according to a video source, a viewing environment, or the like is known (for example, see Patent Document 1). . With this projector, for example, when viewing an image in a bright environment, it is possible to view an image with excellent visibility even in a bright environment by performing image quality adjustments that enhance brightness and contrast. It becomes possible. On the other hand, when watching movies in a dark environment, you can adjust the image quality with more emphasis on color reproducibility than brightness and contrast. can do. The user operates a remote controller or the like to display a setting screen (menu image) that is an OSD (On Screen Display) image, thereby selecting an image quality adjustment mode to be applied from among a plurality of image quality adjustment modes (color modes). Can be set according to the video source and viewing environment.

JP 2007-74347 A

However, if the viewing environment changes after setting the image quality adjustment mode, the visibility of the image may be significantly reduced. For example, in a dark environment at night, if you set a picture quality adjustment mode that emphasizes color reproducibility and watch a movie, and then try to watch the image in the daytime with the same setting, the brightness and contrast will be insufficient. A situation may occur where visibility is reduced. In this case, it is necessary to display the setting screen and change the setting of the image adjustment mode. However, since the visibility of the setting screen is similarly lowered, the setting operation of the image adjustment mode becomes difficult. Has the problem.

SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

Application Example 1 A projector according to this application example includes an image information input unit to which image information is input, an image processing unit that performs image processing on the image information, and image quality adjustment for adjusting the image quality of the image. A mode setting unit for setting a mode, an image quality adjusting unit for performing image quality adjustment according to an image quality adjustment mode set by the mode setting unit, on the image information subjected to the image processing by the image processing unit, An image projection unit that projects the image based on the image information on which the image quality adjustment has been performed by the image quality adjustment unit, and the image processing unit has a function of superimposing an OSD image on an image based on the image information. And the image quality adjusting unit excludes at least a region where the OSD image is superimposed from the image quality adjustment target when the OSD image is superimposed.

According to this projector, the image quality adjustment unit can detect the OSD image when the OSD image is superimposed.
Since the area where the D image is superimposed is excluded from the target of image quality adjustment, the image quality adjustment according to the set image quality adjustment mode is not performed on the OSD image. For this reason, even when the viewing environment changes and an environment in which the image visibility decreases in the set image quality adjustment mode, it is possible to suppress a decrease in the visibility of the OSD image.

Application Example 2 In the projector according to the application example, it is preferable that the mode setting unit superimposes a setting screen for setting the image quality adjustment mode as the OSD image by the image processing unit.

According to this projector, since the setting screen for setting the image quality adjustment mode is superimposed as the OSD image, image quality adjustment according to the set image quality adjustment mode is not performed on the setting screen. For this reason, even when the viewing environment changes and the image quality adjustment mode that has been set has become an environment where the visibility of the image is reduced, the decrease in the visibility of the setting screen is suppressed, and a new viewing environment is created. It is possible to easily change (reset) to a suitable image quality adjustment mode.

Application Example 3 In the projector according to the application example described above, the image quality adjustment unit may include the OSD.
When the images are superimposed, it is desirable to perform the image quality adjustment on an area outside the OSD image.

According to this projector, since the image quality adjustment is performed outside the OSD image even when the OSD image is superimposed, the image quality outside the OSD image changes when the OSD image is superimposed. This eliminates the feeling of discomfort for the user.

Application Example 4 In the projector according to the application example, the image quality adjustment unit separates image information of a region where the OSD image is superimposed from image information on which the image processing is performed by the image processing unit. A separation unit, an image quality adjustment processing unit that performs image quality adjustment according to the image quality adjustment mode on image information in an area outside the OSD image, and image information that has been subjected to the image quality adjustment by the image quality adjustment processing unit. An image combining unit that combines the image information separated by the image separating unit;
It is desirable to provide.

According to this projector, it is possible to obtain the same effect as the projector described above.

Hereinafter, the projector according to the present embodiment will be described with reference to the drawings.
FIGS. 1A and 1B are perspective views showing the projector according to the present embodiment. FIG. 1A is a view of the projector as viewed from the front side. FIG. 1B is a view of the projector as viewed from the back side. It is.
As shown in FIGS. 1A and 1B, the projector 1 according to the present embodiment has a configuration surrounded by a housing 2, and an image is directed forward on the front surface 2 f of the housing 2. Projection lens 13 for projecting
Is exposed. The projector 1 is connected to an external image output device (for example, a personal computer) 100, and an image (hereinafter referred to as “input image”) Gi based on image information input from the image output device 100 is converted into a projection lens 13. To a projection surface S such as a screen. An operation panel 2 on which an input operation is performed by a user is provided on the upper surface 2t of the housing 2.
2, and an operation signal receiving unit 24 capable of receiving an operation signal transmitted from the remote controller 23 is provided on both the front surface 2 f and the back surface 2 b of the housing 2.

FIG. 2 is a block diagram illustrating a schematic configuration of the projector 1.
As shown in FIG. 2, the projector 1 includes an image projection unit 10, a control unit 20, a storage unit 21, an operation panel 22, a remote control 23, an operation signal reception unit 24, an image information input unit 30, and an image processing unit 3.
1 and an image quality adjustment unit 32 and the like.

The image projection unit 10 includes a light source 11 and three liquid crystal light valves 12R and 1 as light modulation devices.
2G, 12B, a projection lens 13 as a projection optical system, a light valve driving unit 14 and the like. The image projection unit 10 corresponds to a display unit, and emits light emitted from the light source 11.
An image is formed by modulation with the liquid crystal light valves 12R, 12G, and 12B, and this image is projected from the projection lens 13 and displayed on the projection surface S.

The light source 11 includes a discharge-type light source lamp 11a made of an ultra-high pressure mercury lamp, a metal halide lamp, or the like, and a reflector 11b that reflects light emitted from the light source lamp 11a toward the liquid crystal light valves 12R, 12G, and 12B. ing. The light emitted from the light source 11 is
The luminance distribution is converted into substantially uniform light by an integrator optical system (not shown), and is separated into light components of red (R), green (G), and blue (B) which are the three primary colors of light by a color separation optical system (not shown). Are incident on the liquid crystal light valves 12R, 12G, and 12B, respectively.

The liquid crystal light valves 12R, 12G, and 12B are configured by a liquid crystal panel in which liquid crystal is sealed between a pair of transparent substrates. The liquid crystal light valves 12R, 12G, and 12B are formed with a plurality of pixels arranged in a matrix, and a driving voltage can be applied to the liquid crystal for each pixel. When the light valve driving unit 14 applies a driving voltage corresponding to the input image information to each pixel, each pixel is set to a light transmittance corresponding to the image information. For this reason, the light emitted from the light source 11 is modulated by transmitting through the liquid crystal light valves 12R, 12G, and 12B, and an image corresponding to the image information is formed for each color light. The formed color images are synthesized for each pixel by a color synthesis optical system (not shown) to form a color image, and then enlarged and projected by the projection lens 13.

The control unit 20 includes a CPU (Central Processing Unit), a RAM (Random Access Memory) used for temporary storage of various data (not shown), and the like, according to a control program stored in the storage unit 21. By operating, the overall operation of the projector 1 is controlled. That is, the control unit 20 functions as a computer together with the storage unit 21.

The storage unit 21 includes a mask ROM (Read Only Memory), a flash memory, and an FeRAM.
It is configured by a non-volatile memory such as (Ferroelectric RAM: ferroelectric memory).
The storage unit 21 stores a control program for controlling the operation of the projector 1, various setting data for defining operation conditions of the projector 1, and the like.

The operation panel 22 and the remote controller 23 correspond to an input operation unit that receives an input operation from the user, and include a plurality of operation keys for the user to give various instructions to the projector 1. The operation keys provided on the operation panel 22 and the remote controller 23 include a “power key” for switching the power on and off, and an environment setting menu G for performing various settings.
“menu key” for displaying m (see FIG. 3), “direction keys” (four keys corresponding to up, down, left and right) used for selecting items in the environment setting menu Gm, etc., selected from the environment setting menu Gm, etc. "Decision key" to determine the selected item, "cancel key" to instruct to cancel the operation,
There is a “mode setting key” for setting an image quality adjustment mode to be described later. When the user operates various operation keys on the operation panel 22, the operation panel 22 outputs an operation signal corresponding to the operation content of the user to the control unit 20. When the user operates various operation keys of the remote controller 23, the remote controller 23 emits an infrared operation signal corresponding to the user's operation content, and the operation signal receiving unit 24 receives this and transmits it to the control unit 20.

The image information input unit 30 includes a personal computer and a DVD (Digital Versatile Disc).
) A connection terminal (not shown) for connecting to an external image output device 100 such as a playback device via a cable is provided, and various types of image information (image signals) are input from the image output device 100. Is done. The image information input unit 30 converts the input image information into digital image information and outputs the digital image information to the image processing unit 31.

The image processing unit 31 is an image processor that performs various types of image processing on image information sequentially input from the image information input unit 30. The image processing unit 31 includes a single semiconductor device, and includes a scaler 41, an OSD processing unit 42, an OSD memory 43, and the like. In addition to this, the image processing unit 31 may include a keystone correction unit or the like for correcting trapezoidal distortion that occurs when an image is projected from an oblique direction. And illustration is abbreviate | omitted.

The scaler 41 determines the resolution (number of pixels) of the image information input from the image information input unit 30.
Processing for matching the resolution (number of pixels) of the liquid crystal light valves 12R, 12G, and 12B is performed to convert the image information into a plurality of pixel values corresponding to all the pixels of the liquid crystal light valves 12R, 12G, and 12B. The pixel value determines the light transmittance of the corresponding pixel, and the intensity (gradation) of light emitted from each pixel is defined by the pixel value. Scaler 4
1 outputs the converted image information to the OSD processing unit 42.

The OSD processing unit 42 performs processing for superimposing and displaying an OSD (On Screen Display) image such as a menu image or a message image on the input image Gi based on an instruction from the control unit 20. For example, when the menu key of the operation panel 22 or the remote controller 23 is operated by the user, the control unit 20 displays the environment setting menu (top menu) G that is an OSD image.
m is superimposed on the input image Gi (see FIG. 3).

An OSD memory 43 is connected to the OSD processing unit 42. In the OSD memory 43,
For all OSD images available on the projector 1, O representing the OSD image itself.
SD image information, OSD shape information representing the shape and size of the OSD image, and OSD position information representing a position where the OSD image should be superimposed in the input image Gi are stored in association with each other. As shown in FIG. 3, when the OSD image (in this example, the environment setting menu Gm) is rectangular, the OSD shape information includes, for example, the horizontal length (number of pixels) Lx and the vertical length of the OSD image. (Number of pixels) Ly is used, and as the OSD position information, for example, the horizontal interval (number of pixels) Px and the vertical interval (pixels) from the upper left corner of the input image Gi to the upper left corner of the OSD image Number) Py is used.

Returning to FIG. 2, the control information for the control unit 20 to superimpose the OSD image is sent to the OSD processing unit 4.
2, the OSD processing unit 42 reads out OSD image information, OSD shape information, and OSD position information based on this control information from the OSD memory 43. The OSD processing unit 4
2 performs a process of combining the OSD image information with the image information input from the scaler 41 so that the OSD image based on the OSD image information is superimposed on the position based on the OSD position information, and the processed image information Is output to the image quality adjustment unit 32. In addition, the OSD processing unit 42
The OSD shape information and the OSD position information read from the memory 43 are output to the control unit 20.

On the other hand, when control information indicating that the OSD image is not superimposed is input from the control unit 20, O
The SD processing unit 42 uses the image information input from the image processing unit 31 as it is, the image quality adjusting unit 32.
Output to.

The image quality adjustment unit 32 performs processing for adjusting image quality on the image information input from the image processing unit 31 based on an instruction from the control unit 20, and outputs the processed image information to the light valve driving unit 14. . The user can select and set a desired one from a plurality of image quality adjustment modes by operating a mode setting key provided on the operation panel 22 or the remote controller 23, and the image quality adjustment unit 32. Performs image quality adjustment processing according to the set image quality adjustment mode. Details of the image quality adjustment unit 32 will be described later.

When the light valve drive unit 14 drives the liquid crystal light valves 12R, 12G, and 12B according to the image information input from the image quality adjustment unit 32, the liquid crystal light valves 12R, 12G, and 12B.
B forms an image according to the image information, and this image is projected from the projection lens 13.

When the mode setting key provided on the operation panel 22 or the remote controller 23 is operated while the projector 1 is projecting the input image Gi, the control unit 20 causes the image quality adjustment mode setting menu Gc to set the image quality adjustment mode. (See FIG. 4) is superimposed on the input image Gi and displayed. Note that an operation for displaying the image quality adjustment mode setting menu Gc can also be performed from the environment setting menu Gm (see FIG. 3) superimposed when the menu key is operated. As shown in FIG. 3, the environment setting menu Gm lists a plurality of items for performing various settings of the projector 1, and the user operates the direction keys provided on the operation panel 22 or the remote controller 23. By operating the enter key after selecting a desired item, settings regarding the selected item can be made. The configuration menu Gm also includes an item “image quality adjustment mode” for setting the image quality adjustment mode. When the user selects “image quality adjustment mode” and operates the enter key, the control unit 20 The image quality adjustment mode setting menu Gc (see FIG. 4) is superimposed on the input image Gi.

As shown in FIG. 4, the image quality adjustment mode setting menu Gc lists a plurality of selectable image quality adjustment modes. Specifically, "dynamic", "living room", "
Four image quality adjustment modes of “Theater” and “Theater Black” are described, and the user can set a desired image quality adjustment mode by operating the direction key and the enter key of the operation panel 22 or the remote controller 23. it can.

For example, the user selects an image quality adjustment mode according to the brightness of the viewing environment. Of the four image quality adjustment modes described above, “dynamic” and “living” are image quality adjustment modes suitable for image viewing in a bright environment. These are for performing image quality adjustment with an emphasis on brightness at the expense of color reproducibility to some extent. Among these two image quality adjustment modes,
Brightness is more important in “Dynamic” than “Living”. “Theater” and “Theater black” are image quality adjustment modes suitable for watching movies in a dark environment. These are for performing image quality adjustments with emphasis on color reproducibility at the expense of brightness. In these two image quality adjustment modes, “Theater Black” rather than “Theater” is used.
The more important is the color reproducibility.

When the image quality adjustment mode is set by the user, the control unit 20 instructs the OSD processing unit 42 to end the superimposition of the image quality adjustment mode setting menu Gc. Further, the control information is output to the image quality adjustment unit 32, the set image quality adjustment mode is notified, and the image quality adjustment according to the image quality adjustment mode is performed. The image quality adjustment unit 32 includes a plurality of LUTs (corresponding to each image quality adjustment mode).
When the image quality adjustment mode is set, the image quality adjustment unit 32 validates the LUT corresponding to the set image quality adjustment mode. Thereafter, image quality adjustment is performed on the image information input from the image processing unit 31 by converting pixel values using an effective LUT.

Here, when the OSD image such as the environment setting menu Gm or the image quality adjustment mode setting menu Gc is superimposed on the input image Gi, the image quality adjustment unit 32 of the present embodiment is an area where the OSD image is superimposed. Is excluded from the target of image quality adjustment, and image quality adjustment is performed only for the area outside the OSD image.

FIG. 5 is a block diagram showing a detailed configuration of the image quality adjustment unit 32.
As shown in FIG. 5, the image quality adjustment unit 32 includes an image separation unit 51, an image quality adjustment processing unit 52, a buffer 53, and an image composition unit 54.

When the OSD image is superimposed on the input image Gi, the image separation unit 51 displays the image processing unit 3.
1 is separated from the image information input from 1 (hereinafter referred to as “OSD region”) where the OSD image is superimposed. The image separation unit 51 displays separated image information, that is, OSD.
The image information of the area is output to the buffer 53, and the remaining image information, that is, the image information of the area outside the OSD image (hereinafter referred to as “background area”) is output to the image quality adjustment processing unit 52. Further, the image separation unit 51, when the OSD image is not superimposed on the input image Gi, the image processing unit 3
1 is output to the image quality adjustment processing unit 52 as it is.

More specifically, when a menu key or mode setting key provided on the operation panel 22 and the remote controller 23 is operated, the control unit 20 instructs the OSD processing unit 42 to display an OSD image (environment setting menu Gm, image quality adjustment). A mode setting menu Gc and the like). Thereafter, the control unit 2
0 outputs the OSD shape information and the OSD position information input from the OSD processing unit 42 to the image separation unit 51 as control information. The image separation unit 51 recognizes the shape (size) and position of the OSD area based on this control information, and determines whether each pixel constituting the image is inside or outside the OSD area. Then, among the image information input from the image processing unit 31, the pixel value of the pixel in the OSD area is output to the buffer 53, and the pixel value of the pixel outside the OSD area, that is, the pixel in the background area is output as the image quality adjustment processing unit. To 52.

The image quality adjustment processing unit 52 receives image information input from the image separation unit 51 (image information of the background area when the OSD image is superimposed, and image information of the entire area when the OSD image is not superimposed). On the other hand, the image quality adjustment process is performed using the LUT corresponding to the image quality adjustment mode notified from the control unit 20, that is, the image quality adjustment mode set by the user, and the processed image information is output to the image composition unit 54.

The buffer 53 temporarily stores the image information of the OSD area input from the image separation unit 51, and matches the timing when the image quality adjustment processing unit 52 outputs the image information to the image composition unit 54.
The stored image information is output to the image composition unit 54.

The image composition unit 54 synthesizes the image information input from the image quality adjustment processing unit 52 and the image information input from the buffer 53, and sends the combined image information to the image projection unit 10 (light valve driving unit 14). Output. For this reason, when the OSD image is superimposed, the image information of the background area that has undergone image quality adjustment and the image information of the OSD area that has not undergone image quality adjustment are combined and output.

As a result, an image based on the image information output from the image composition unit 54 is projected from the image projection unit 10. When the OSD image is superimposed on this image, the OSD image is not subjected to image quality adjustment processing, and the image is displayed with the image quality adjustment processing applied only to the input image Gi in the background area. The Further, when the image does not include an OSD image and only the input image Gi is projected, all image information passes through the image quality adjustment processing unit 52, so that the image quality adjustment processing is performed on the entire area of the input image Gi. An image is displayed in a state where is applied.

As described above, according to the projector 1 of the present embodiment, the following effects can be obtained.

(1) According to the projector 1 of the present embodiment, the image quality adjustment unit 32 excludes the OSD area from the image quality adjustment target when the OSD image is superimposed, so that it corresponds to the set image quality adjustment mode. Image quality adjustment is no longer performed on OSD images. For this reason, even when the viewing environment changes and an environment in which the image visibility decreases in the set image quality adjustment mode, it is possible to suppress a decrease in the visibility of the OSD image. For example, in a dark environment at night, after setting a picture quality adjustment mode ("Theater" or "Theater Black") at the expense of brightness and watching a movie etc., try to watch an image in the daytime with the same settings. Even when
Insufficient brightness of the OSD image is suppressed, and the visibility of the OSD image is improved.

(2) According to the projector 1 of the present embodiment, the image quality adjustment mode setting menu Gc for setting the image quality adjustment mode is superimposed as an OSD image, and therefore image quality adjustment according to the set image quality adjustment mode is performed. The mode setting menu Gc is not applied. For this reason, even when the viewing environment changes and the image quality adjustment mode is set to an environment in which the visibility of the image is reduced, the reduction in the visibility of the image quality adjustment mode setting menu Gc is suppressed,
It becomes possible to easily change (reset) the image quality adjustment mode suitable for a new viewing environment. For example, in a dark environment at night, after setting a picture quality adjustment mode ("Theater" or "Theater Black") at the expense of brightness and watching a movie etc., try to watch an image in the daytime with the same settings. In this case, since the deterioration of the visibility of the image quality adjustment mode setting menu Gc is suppressed, the image quality adjustment mode (“dynamic” or “living”) suitable for viewing in a bright environment can be easily changed. be able to.

(3) According to the projector 1 of the present embodiment, image quality adjustment is performed on the background area outside the OSD image even when the OSD image is superimposed. Thus, the image quality of the background area is not changed, and the user does not feel uncomfortable.

In the present embodiment, the image quality adjustment mode setting menu Gc for setting the image quality adjustment mode corresponds to the setting screen. Further, the control unit 20 for superimposing and displaying the image quality adjustment mode setting menu Gc by instructing the image processing unit 31 (OSD processing unit 42) to allow the user to set the image quality adjustment mode corresponds to the mode setting unit. .

(Modification)
In addition, you may change the said embodiment as follows.

In the above embodiment, when the OSD image is superimposed, the image quality adjustment unit 32 excludes the OSD area from the image quality adjustment target and performs image quality adjustment only on the background area outside the OSD image. It is not limited to an aspect. For example, when the OSD image is superimposed, the entire image, that is, both the OSD area and the background area may be excluded from the image quality adjustment targets.
However, in this case, when the OSD image is superimposed, the image quality changes in the background area where the image quality adjustment has been performed so far, which gives the user a sense of incongruity, as in the above embodiment. It is desirable to exclude only the OSD area from the object of image quality adjustment.

In the above embodiment, the image quality adjustment unit 32 outputs the image projection unit 10 without adjusting the image quality on the OSD area, but the present invention is not limited to this mode. For example, for the OSD area, image quality adjustment may always be performed in a specific image quality adjustment mode (for example, “dynamic”) regardless of the user setting.

In the above embodiment, the three liquid crystal light valves 12R, 12G, and 12B are used as the light modulation devices.
Although a three-plate projector using the above has been described, the invention is not limited to this. For example, it is possible to form an image with one liquid crystal light valve that includes sub-pixels that can transmit R light, G light, and B light in each pixel.

In the above embodiment, as the light modulation device, transmissive liquid crystal light valves 12R, 12G, 1
Although 2B is used, it is also possible to use a reflective light modulation device such as a reflective liquid crystal light valve. Also, a micromirror array device that modulates the light emitted from the light source 11 by controlling the emission direction of the incident light for each micromirror as a pixel can be used.

In the above embodiment, the light source 11 is constituted by the discharge-type light source lamp 11a. However, a solid light source such as an LED (Light Emitting Diode) light source or other light sources may be used.

(A), (b) is a perspective view which shows the projector of this embodiment, (a) is the figure which looked at the projector from the front side, (b) is the figure which looked at the projector from the back side. FIG. 2 is a block diagram showing a schematic configuration of a projector. The figure which shows the environment setting menu superimposed on the input image. The figure which shows an image quality adjustment mode setting menu. The block diagram which shows the detailed structure of an image quality adjustment part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Projector, 2 ... Housing | casing, 10 ... Image projection part, 11 ... Light source, 12R, 12G, 12
B ... Liquid crystal light valve, 13 ... Projection lens, 14 ... Light valve drive unit, 20 ... Control unit,
DESCRIPTION OF SYMBOLS 21 ... Memory | storage part, 22 ... Operation panel, 23 ... Remote control, 24 ... Operation signal receiving part, 30 ... Image information input part, 31 ... Image processing part, 32 ... Image quality adjustment part, 41 ... Scaler, 42 ... OSD processing part, 43 ... OSD memory, 51 ... Image separation unit, 52 ... Image quality adjustment processing unit, 53 ... Buffer,
54 ... Image composition unit, Gi ... Input image, Gm ... Environment setting menu, Gc ... Image quality adjustment mode setting menu, S ... Projection plane.

Claims (4)

An image information input unit for inputting image information;
An image processing unit that performs image processing on the image information;
A mode setting section for setting an image quality adjustment mode for adjusting the image quality of the image;
An image quality adjustment unit that performs image quality adjustment according to an image quality adjustment mode set by the mode setting unit, on the image information subjected to the image processing by the image processing unit;
An image projection unit that projects the image based on the image information on which the image quality adjustment has been performed by the image quality adjustment unit;
With
The image processing unit has a function of superimposing an OSD image on an image based on the image information,
When the OSD image is superimposed, the image quality adjustment unit at least includes the OSD.
A projector characterized in that an area where an image is superimposed is excluded from the image quality adjustment target. The projector according to claim 1,
The mode setting unit causes the image processing unit to superimpose a setting screen for setting the image quality adjustment mode as the OSD image. The projector according to claim 1 or 2,
The projector, wherein the image quality adjustment unit performs the image quality adjustment on a region outside the OSD image when the OSD image is superimposed. The projector according to claim 3, wherein
The image quality adjustment unit
An image separation unit that separates image information of a region where the OSD image is superimposed from image information on which the image processing has been performed by the image processing unit;
An image quality adjustment processing unit that performs image quality adjustment in accordance with the image quality adjustment mode on image information in an area outside the OSD image;
An image composition unit that synthesizes the image information that has been separated by the image separation unit with the image information that has undergone the image quality adjustment by the image quality adjustment processing unit;
A projector comprising:

Images