JP2009027606A - Projection type display device and control method of projection type display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a projection type display device capable of easily adjusting positions between a screen and an input image even if an aspect ratio between a display image and a screen is different from that between the display image and an input image, a program, and a control method of the projection type display device. <P>SOLUTION: A projection type display device 10 includes a display portion 42 composed so as to display a display image with a predetermined aspect ratio, a display control portion 32 performing display control on an image to be displayed in the display portion based on an input image signal of a plurality of aspect ratios, and a projection portion 40 projecting the image displayed on the display portion on the screen. The display control portion 32 includes an input display range guide image display control portion 34 which displays an input display range guide image for guiding an input image display range in the display image on the display portion. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a projection display device and a control method for the projection display device.

Conventionally, a projection type display device that optically processes a light beam emitted from a light source to form an optical image, and enlarges and projects the optical image by a projection lens is known. Many are also provided. In such a movable projection display device, in order to install the projector at an optimum position with respect to the screen, the projector main body is temporarily installed at a suitable position, and then the power is turned on to actually place the image on the screen. A method is used in which the position of the projector body is adjusted while projecting and viewing the projected screen.
Japanese Patent Laid-Open No. 2002-162690

  Recently, the number of projection display devices compatible with wide screens is increasing, but the screen itself is still often compatible with 3: 4. In such a situation, when the projection display device is turned on, a no-signal screen is projected on the entire wide screen, so that it is difficult to fit the projected image onto the 3: 4 screen.

  The present invention has been made in view of the above-described problems, and it is easy to align the screen and the input image even when the aspect ratio of the display image and the screen and the aspect ratio of the display image and the input image are different. To provide a projection display device and a control method for the projection display device.

(1) The present invention provides a display unit configured to display a display image having a predetermined aspect ratio, and display control for performing display control of an image displayed on the display unit based on an input image signal having a plurality of aspect ratios. And a projection unit that projects an image displayed on the display unit onto a screen, wherein the display control unit is an input for guiding an input image display area in the display image. An input display area guide image display control unit that displays a display area guide image on the display unit is included.

  The aspect ratio is the ratio of the vertical and horizontal length (number of pixels) of a screen or image.

  The display unit configured to display a display image having a predetermined aspect ratio may be, for example, a case where a liquid crystal panel, a DMA, or a light valve constituting the display unit is configured with a predetermined aspect ratio, or in a default state. In this case, the image displayed on the display unit may have a predetermined aspect ratio, or the image displayed in a state where the display target image is not input may have a predetermined aspect ratio.

According to the present invention, it is possible to align the screen and the display area of the input image using the input display area guide image. Therefore, it is possible to provide a projection display device that allows easy alignment of the screen and the input image even when the aspect ratio of the display image and the screen and the aspect ratio of the display image and the input image are different.
(2) In the projection display device of the present invention, the input display area guide image display control unit includes an area set as the input image display area as the input display area guide image, and other areas, This area is characterized in that an image set darker than the area set as the input image display area is displayed.
(3) In the projection type display device of the present invention, the input display area guide image display control unit, as an input display area guide image, shows a boundary between an area set as the input image display area and other areas. Alternatively, an image including a dot or a mark set in association with the dot or the dot is displayed.
(4) In the projection type display device of the present invention, the input display area guide image display control unit uses the input display area guide image as the vertical or horizontal length of the image and the vertical or horizontal length of the input image display area. An image in which the input image display area is set so as to substantially match is displayed.
(5) In the projection type display device of the present invention, the input display area guide image display control unit controls to display the input display area guide image when it is determined that there is no input image signal. And

According to the present invention, it is possible to perform alignment according to an input image even when there is no input image signal.
(6) The projection type display device of the present invention is characterized in that the aspect ratio of the screen is smaller than the aspect ratio of the display image, or the aspect ratio of the screen is smaller. The fact that the ratio of horizontal to vertical is smaller than the display image aspect ratio means that the display image (image projected on the screen) is horizontally longer than the screen.

That the aspect ratio of the screen is smaller than the aspect ratio of the display image in the vertical direction means that the display image (image projected on the screen) is longer than the screen.
(7) The projection display device of the present invention further includes a screen aspect ratio information receiving unit that receives screen aspect ratio information that is information relating to an aspect ratio of a screen to be used, and the input display area guide image display control unit receives the screen aspect ratio information. When it is determined that the screen aspect ratio and the display image aspect ratio have a predetermined relationship based on the screen aspect ratio information, an input display area guide image is displayed.

  The screen aspect ratio information of the screen to be used may be set by an input operation, for example.

  If the aspect ratio of the screen and the aspect ratio of the display image are not the same, alignment is difficult. Therefore, the input display area guide image display control unit may display the input display area guide image when determining that the aspect ratio of the screen and the aspect ratio of the display image are not the same.

  Further, for example, when the aspect ratio of the screen is smaller than the aspect ratio of the display image, or the ratio of the aspect ratio to the width is smaller than the aspect ratio of the display image, the alignment is difficult. Therefore, when the input display area guide image display control unit determines that the aspect ratio of the screen is smaller than the aspect ratio of the display image, or when the ratio of the aspect ratio to the height is smaller, The input display area guide image may be displayed.

According to the present invention, an input display area guide image can be displayed when alignment is difficult.
(8) The projection display device of the present invention further includes a screen shape detection unit that detects the shape of the screen to be used, and the input display area guide image display control unit is configured to detect the screen shape based on the detection result of the screen shape. An aspect ratio is obtained, and when it is determined that the aspect ratio of the screen and the aspect ratio of the display image have a predetermined relationship, an input display area guide image is displayed.

The screen shape detection unit can be realized by a CCD camera or the like, for example.
(9) The projection display apparatus of the present invention further includes an input aspect ratio information receiving unit that receives input aspect ratio information that is information related to an aspect ratio of a planned input image, and the input display area guide image display control unit includes: An input display area guide image corresponding to the received input aspect ratio information is displayed.

The aspect ratio information of the scheduled input image may be set by an input operation, for example.
(10) The present invention provides a display unit configured to display a display image having a predetermined aspect ratio, a display control unit configured to display an image to be displayed on the display unit based on an input image signal having a plurality of aspect ratios. And a projection unit that projects an image displayed on the display unit onto a screen, and an input display region guide for guiding a display region of the input image in the display image An image is displayed on the display unit.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. The embodiments described below do not unduly limit the contents of the present invention described in the claims. In addition, not all of the configurations described below are essential constituent requirements of the present invention.

  Hereinafter, electronic devices according to embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a functional block diagram of a projector which is an example of a projection display device according to the present embodiment.

  The projector 10 according to the present embodiment includes a display unit 44. The display unit 44 is realized by a liquid crystal panel, a light valve, a DMD, or the like, and is configured to display a display image having a predetermined aspect ratio (for example, a first aspect ratio). For example, in the case of a liquid crystal panel, the size of the liquid crystal panel is configured to have a predetermined aspect ratio. The liquid crystal panel may be composed of three panels corresponding to R, G, and B, respectively.

  Projector 10 of the present embodiment includes a control unit 30. The control unit 30 performs various processes of the projector 10 and may be realized by hardware such as a CPU and a DSP and a program for executing various processes of the projection display device.

  The control unit 30 includes a display control unit 32 that controls an image displayed on the display unit 44. The display control unit 32 performs display control for displaying an input display region guide image on the display unit 44 for guiding the display region of the input image in the display image.

  The input display area guide image display control unit 34 includes, as the input display area guide image, an area set in relation to the display area of the input image and other areas. In other areas, an image set darker than the area set in relation to the display area of the input image may be displayed.

  In addition, the input display area guide image display control unit 34 uses, as the input display area guide image, a line or a point indicating the boundary between the area set in relation to the input image display area and the other area, or in relation thereto. An image including the set mark may be displayed.

  In addition, the input display area guide image display control unit 34 displays the input image so that the vertical or horizontal length of the image substantially matches the vertical or horizontal length of the input image display area. You may make it display the image set to the area | region.

  Further, the input display area guide image display control unit 34 may display the input display area guide image when determining that there is no input image signal.

  When the input display area guide image display control unit 34 determines that the aspect ratio of the screen 210 and the aspect ratio of the display image have a predetermined relationship based on the received screen aspect ratio information, the input display area guide image May be displayed.

  Further, the input display area guide image display control unit 34 obtains the aspect ratio of the screen 210 based on the detection result of the shape of the screen 210, and determines that the aspect ratio of the screen 210 and the aspect ratio of the display image have a predetermined relationship. In such a case, an input display area guide image may be displayed.

  Further, the input display area guide image display control unit 34 may display an input display area guide image corresponding to the received input aspect ratio information.

  Projector 10 of the present embodiment includes an operation unit 70. The operation unit 70 is for a user to input operation data and operation instructions, and the function can be realized by a lever, a button, a tearing, a knob, a touch panel, and the like. The operation unit 70 may function as a screen aspect ratio information receiving unit that receives screen aspect ratio information that is information related to the aspect ratio of the screen 210 to be used. The operation unit 70 may function as an input aspect ratio information receiving unit that receives input aspect ratio information that is information related to the aspect ratio of a planned input image.

  Projector 10 of the present embodiment includes an input image signal receiving unit 90. The input image signal receiving unit 90 includes a communication device and receives an input image signal supplied from an external input image supply device (for example, a PC). In the present embodiment, input image signals 92 having a plurality of aspect ratios including an aspect ratio different from the aspect ratio of the display image are input.

  Projector 10 of the present embodiment includes an imaging unit 20. The imaging unit 20 includes a CCD camera or the like, and functions as a screen shape detection unit that detects the shape of the screen 210 to be used.

  Projector 10 of the present embodiment includes a projection optical system 40. The projection optical system 40 includes a light source 42 such as a lamp unit, a display unit 44, and a projection lens 46. The projection optical system 40 projects and displays an image on a screen surface 210 outside the projector 10. It functions as a projection unit that projects the image displayed on the screen 210.

  The light source 42 irradiates the display unit 44 with light, and performs a lighting operation using light source driving power generated by the ballast unit 64. The display unit 44 includes a plurality of pixels (not shown) formed in a matrix, and modulates the light emitted from the light source 42 for each pixel based on the image signal 36 input from the display control unit 32. An optical image corresponding to the image signal is formed.

  The optical image formed by the display unit 44 is enlarged and projected onto the screen surface 210 and the like by the projection lens 46.

  Projector 10 of the present embodiment includes a power supply unit 60. The power supply unit 60 receives a commercial power supply such as AC 100 V and generates a DC power supply voltage necessary for various operations of the projection display apparatus 10, and a ballast unit 64 that drives the light source of the projection optical system 40. Including. The main power supply unit 62 includes a rectifier circuit that converts commercial power into direct current by full-wave rectification, a power factor improvement (PFC) circuit that suppresses harmonic current and improves the power factor, and power factor improvement. It has a DC-DC conversion circuit that converts the output of the circuit to a predetermined voltage by a transformer (transformer) a, and may generate operating power for operating the control unit 60 from a commercial power supply. Good.

  The ballast unit 64 is connected to a power factor correction circuit provided on the primary side (commercial power supply) of the transformer, and is stepped down by a step-down chopper that steps down the output voltage from the power factor improvement circuit and the step-down chopper. An inverter for converting a direct current into an alternating current rectangular wave current (light source driving power) and an igniter for urging the light source lamp to start by performing dielectric breakdown between the electrodes of the light source lamp are provided.

  2A to 2C are diagrams showing a no-signal image 300 and an example of projection thereof.

  2A shows a non-signal image 300 of a projector 10 (hereinafter referred to as a projector having a first aspect ratio) having a display unit 44 configured such that a display image has a first aspect ratio. The screen is projected onto the screen 210 having a second aspect ratio different from the aspect ratio.

  The no-signal image 300 is an image displayed when there is no image to be displayed or when there is no input image signal. For example, all the pixels of the display image have a predetermined color (for example, blue). is there. The first aspect ratio may be an aspect ratio of an image compatible with a wide screen having an aspect ratio of 9:16, for example.

  The aspect ratio of the non-signal image 300 is equal to the aspect ratio of the display image of the projector having the first aspect ratio. Therefore, when the aspect ratio of the display image of the projector having the first aspect ratio is a: b, the aspect ratio L1: L2 of the no-signal image 300 is a: b.

  FIG. 2B shows a state in which a no-signal image 300 of a projector having a first aspect ratio is displayed on a screen 210 corresponding to the first aspect ratio (hereinafter referred to as a screen having a first aspect ratio). Show.

  FIG. 2C shows a state in which a no-signal image 300 of a projector having a first aspect ratio is displayed on a screen 210 corresponding to the second aspect ratio (hereinafter referred to as a screen having a second aspect ratio). Show.

  The second aspect ratio may be a case where the aspect ratio is 3: 4 when the aspect ratio to the vertical is smaller than the first aspect ratio. The screen having the second aspect ratio may be a normal screen having an aspect ratio of 3: 4, for example.

  Since the projector 10 can perform projection after the light source 42 is turned on, input of a video signal is often started after the power switch is turned on first and the light source 42 is turned on. Immediately after the power is turned on (until the video signal is received after the power is turned on, for example, immediately after the projector 10 is activated), the no-signal image 300 is projected onto the screen 210.

  FIG. 3 is a diagram illustrating an example of alignment between the no-signal image 300 of the projector having the first aspect ratio and the screen 210 having the second aspect ratio.

  When the no-signal image 300 is projected by the projector having the first aspect ratio, when the no-signal image 300 and the screen 210 are aligned, the no-signal image 300 fits in the screen 210 as shown in FIG. In general, alignment is performed.

  However, even a projector that supports the first aspect ratio (for example, wide screen) may display an image that supports the second aspect ratio (for example, 3: 4).

  FIG. 4 is a diagram showing a display image (projected image) 330 when the projector corresponding to the first aspect ratio displays an image corresponding to the second aspect ratio (hereinafter referred to as an input image).

  The display image 330 of the first aspect projector has a first aspect ratio. The display image 330 includes an input image display area 332 and non-display areas 334 and 336. An input image (second aspect ratio image) is displayed in the input image display area 332, and a predetermined color (for example, black) is displayed in the non-display areas 334 and 336.

  FIG. 5 shows a state in which an input image having the second aspect ratio is displayed on the screen 210 having the first aspect ratio by using a projector having the first aspect ratio.

  In such a case, the display image (image projected by the projector having the first aspect ratio) 330 is placed on the screen 210 having the first aspect ratio by performing alignment with the screen 210 using the no-signal image 300. It can be displayed in full. Therefore, since the input image 332 can fully use the vertical direction of the wide screen 210, there is no particular problem.

  FIG. 6 shows a state where the input image 332 having the second aspect ratio is displayed on the screen 210 having the second aspect ratio by using the projector having the first aspect ratio.

  In such a case, since the aspect ratio of the screen 210 and the input image (the second aspect ratio image 332) is the same, the input image 332 is preferably displayed on the screen 210 as much as possible. However, when alignment as shown in FIG. 3 is performed using the non-signal image 300 of the projector having the first aspect ratio, the ratio of the display area of the input image 332 to the screen 210 is small as shown in FIG. Therefore, the screen cannot be used efficiently.

  7 to 9 are diagrams for explaining the input display area guide image 410 according to the present embodiment.

  The input display area guide image 410 is an image for guiding the display area of the input image in the display image. That is, the first aspect ratio projector is an image for guiding an input image display area having a second aspect ratio different from the first aspect ratio.

  For example, as shown in the input display area guide image 410 in FIG. 7, an area (hereinafter referred to as a display area) 412 set in relation to the display area of the input image is set as another area (hereinafter referred to as a non-display area). Guidelines 415 and 417 indicating boundaries with 414 and 416 may be displayed.

  In addition to the guideline, a point indicating the boundary between the display area 412 and the non-display area (for example, two points on the boundary) may be displayed, or a mark indicating the boundary (for example, ““ ””, etc.) may be displayed. You may make it display a bracket. In this way, the input image can be efficiently displayed on the screen 210 by performing alignment with the screen 210 using the guideline 415, 417, etc. in the display (projection) image.

  The area (hereinafter referred to as the display area) 412 set in relation to the display area of the input image is preferably the same in aspect ratio as the input image (similar to the input image), but some buffers are provided. It is within the scope of the present invention if the aspect ratio differs slightly depending on the case.

  Further, for example, as shown in the input display area guide image 410 of FIG. 8, the display area 412 may be displayed in a display mode different from the display outside areas 414 and 416. As a different display mode, for example, the color, pattern, and luminance may be changed between the display area 412 and the non-display areas 414 and 416. In this way, the input image can be efficiently displayed on the screen 210 by aligning the display area 412 that can be identified by the display mode with the screen 210.

  Here, as shown in the input display area guide image 410 of FIG. 9, the brightness of the non-display areas 414 and 416 may be set to be smaller (darker) than the brightness of the display area 412.

  Since the screen 210 is not provided in the portion where the outside display areas 414 and 416 are displayed, the screen 210 cannot block the projection light. Therefore, if the luminance of the outside display areas 414 and 416 is high, a load is applied to the eyes of the user who enters the left and right areas of the screen 210.

  However, according to the present embodiment, the luminance of the outside display areas 414 and 416 is made smaller than the luminance of the display area 412, so the load on the eyes of the user can be reduced.

  Note that black may be displayed in the non-display areas 414 and 416 in order to minimize the burden on the user's eyes.

  Further, as shown in the input display area guide image 410 of FIG. 8, the display area 412 may be set to fill the vertical direction of the input display area guide image 410, or the input display area guide image 410 of FIG. As shown, the display area 412 may be set leaving a margin in the vertical direction of the image 410.

  11A to 11C are diagrams showing the relationship between the aspect ratio of the screen and the aspect ratio of the projector. The description will be made assuming that the aspect ratio of the projector is equal to the aspect ratio of the no-signal image 300 of the projector 10.

  FIG. 11A shows a case where the aspect ratio of the screen 610 and the aspect ratio of the no-signal image 300 are different. In such a case, as described with reference to FIGS. 4 to 6, it is difficult to align the non-signal image 300 (image at the time of no input signal).

  On the other hand, as shown in FIG. 11B, when the aspect ratio of the screen 210 and the aspect ratio of the no-signal image 300 are the same, alignment is performed on the no-signal image 300 (image at the time of no input signal). Is possible.

  Therefore, the input display area guide image display control unit 34 performs control to display the input display area guide image when it is determined that the aspect ratio of the screen is not the same as the first aspect ratio.

  FIG. 11C also shows a case where the aspect ratio of the screen 210 is different from that of the no-signal image 300. Here, in FIG. 11A, since the aspect ratio of the screen 210 is smaller than the aspect ratio of the non-signal image 300 in the horizontal ratio, it is difficult to align the non-signal image 300 (image without input signal). is there. On the other hand, in FIG. 11C, the aspect ratio of the screen 210 is larger in the horizontal to vertical ratio than the aspect ratio of the non-signal image 300, so that the alignment is possible with the non-signal image 300 (image at the time of no input signal). is there.

  Therefore, when it is determined that the aspect ratio of the screen 210 is smaller than the aspect ratio of the non-signal image, or the aspect ratio of the width is smaller than the aspect ratio of the non-signal image, the input display area guide image is controlled to be displayed. Also good.

  The aspect ratio information regarding the aspect ratio of the screen to be used may be set by an operation input from the operation unit, for example. The input display area guide image display control unit 34 may determine the aspect ratio of the screen 210 based on the set aspect ratio information.

  Further, the screen 210 may be photographed by the imaging unit 20, and the shape of the screen 210 may be detected based on the photographed image. The input display area guide image display control unit 34 may determine the aspect ratio of the screen 210 based on the detection result.

  12A to 12C are diagrams showing input display area guide images 410 corresponding to input images having different aspect ratios. FIG. 12A shows an input display area guide image 410a corresponding to an input image having the second aspect ratio (aspect ratio is a2: b2). FIG. 12B shows an input display area guide image 410b corresponding to an input image having a third aspect ratio (aspect ratio is a3: b3). FIG. 12C shows an input display area guide image 410c corresponding to an input image having a fourth aspect ratio (aspect ratio is a4: b4).

  Input display area guide images 410a, 410b, 410c corresponding to a plurality of input images having different aspect ratios as shown in FIGS. 12A to 12C are prepared, and any one of them is determined based on a predetermined condition. The input display area guide image 410 may be selected and displayed.

  Further, an input display area guide image 410 corresponding to an input image having any aspect ratio may be generated and displayed based on a predetermined condition.

  For example, input aspect ratio information that is information related to the aspect ratio of the planned input image may be received, and the input display area guide image 410 corresponding to the received input aspect ratio information may be displayed. For example, it is determined whether the received input aspect ratio information corresponds to the second aspect ratio, the third aspect ratio, or the forty-second aspect ratio, and the input display area guide image 410 corresponding to the corresponding aspect ratio is determined. You may make it display.

  FIG. 13 is a flowchart showing the processing flow of the present embodiment.

  You may make it perform the process of step S10-S50 for every predetermined period (for example, every 1/60 second).

  The presence / absence of an input image signal is detected. If there is no input signal, the following processing is performed (step S10).

  First, whether screen aspect ratio information is set is detected. If it is set (step S20), it is determined whether the aspect ratio of the screen 210 is different from the aspect ratio of the display image (step S30). If it is not set, go to step S40.

  When the aspect ratio of the screen 210 and the aspect ratio of the display image are the same, the input display area guide image 410 is not displayed. If the aspect ratio of the screen is different from the aspect ratio of the display image (step S30), it is determined whether input aspect ratio information is set (step S40).

If the input aspect ratio information is set, the input display area guide image 410 corresponding to the input aspect ratio information is displayed (step S50).
If the input aspect ratio information is not set, the default input display area guide image 410 is displayed (step S60).

  The present invention includes configurations that are substantially the same as the configurations described in the embodiments (for example, configurations that have the same functions, methods, and results, or configurations that have the same objects and effects). In addition, the invention includes a configuration in which a non-essential part of the configuration described in the embodiment is replaced. In addition, the present invention includes a configuration that exhibits the same operational effects as the configuration described in the embodiment or a configuration that can achieve the same object. Further, the invention includes a configuration in which a known technique is added to the configuration described in the embodiment.

  Further, the projector is not limited to a projector using a liquid crystal panel, and may be a projector using a DMD (Digital Micromirror Device), for example. DMD is a trademark of Texas Instruments Incorporated.

1 is a functional block diagram of a projector that is an example of a projection display device according to an embodiment. 2A to 2C are diagrams showing a no-signal image and a projection example thereof. The figure which shows an example of alignment of the non-signal image of the projector of the 1st aspect ratio, and the screen of the 2nd aspect ratio. The figure which shows a display image in case the projector corresponding to a 1st aspect ratio displays the image corresponding to a 2nd aspect ratio. The figure which shows a mode in the case of displaying the input image of a 2nd aspect ratio on the screen of a 1st aspect ratio using the projector of a 1st aspect ratio. The figure which shows a mode in the case of displaying the input image of a 2nd aspect ratio on the screen of a 2nd aspect ratio using the projector of a 1st aspect ratio. The figure for demonstrating the input display area guide image of this Embodiment. The figure for demonstrating the input display area guide image of this Embodiment. The figure for demonstrating the input display area guide image of this Embodiment. The figure shown in the input display area guide image in which the display area was set leaving the allowance in the vertical direction. 11A to 11C are diagrams showing the relationship between the aspect ratio of the screen and the aspect ratio of the projector. 12A to 12C are diagrams showing input display area guide images 410 corresponding to input images having different aspect ratios. The flowchart which shows the flow of the process of this Embodiment.

Explanation of symbols

10 projector, 20 imaging unit, 30 control unit, 32 display control unit, 34 input display area guide image display control unit, 36 image signal, 42 light source, 44 display unit, 46 optical system, 60 power supply unit, 64 ballast unit, 62 Main power supply unit, 70 operation unit, 210 screen, 300 no signal image, 330 display image, 332 input image display region, 334, 336 no display region, 412 display region, 414, 416 non-display region, 415, 417 guidelines

Claims (10)

A display unit configured to display a display image having a predetermined aspect ratio;
A display control unit that performs display control of an image displayed on the display unit based on input image signals having a plurality of aspect ratios;
A projection unit that projects an image displayed on the display unit onto a screen;
The display control unit
An input display region guide image display control unit for displaying an input display region guide image for guiding an input image display region in the display image on the display unit;
Projection type display device characterized by including. In claim 1,
The input display area guide image display control unit,
As the input display area guide image, an area that is set as the input image display area and other areas are displayed, and the other areas are displayed darker than the area set as the input image display area. A projection-type display device. In any one of Claims 1 thru | or 2.
The input display area guide image display control unit,
As the input display area guide image, an image including a line or a point indicating a boundary between the area set as the input image display area and the other area or a mark set in relation thereto is displayed. Projection display device. In any one of Claims 1 thru | or 3,
The input display area guide image display control unit,
As the input display area guide image, an image in which the input image display area is set so that the vertical or horizontal length of the image substantially matches the vertical or horizontal length of the input image display area is displayed. Projection type display device. In any one of Claims 1 thru | or 4,
The input display area guide image display control unit,
A projection-type display device that controls to display the input display area guide image when it is determined that there is no input image signal. In any one of Claims 1 thru | or 5,
A projection type display device characterized in that the aspect ratio of the screen is smaller than the aspect ratio of the display image in the horizontal ratio or the vertical ratio in the horizontal direction. In any one of Claims 1 thru | or 6.
A screen aspect ratio information receiving unit that receives screen aspect ratio information that is information relating to the aspect ratio of the screen to be used;
The input display area guide image display control unit,
A projection-type display device that displays an input display area guide image when it is determined that the aspect ratio of the screen and the aspect ratio of the display image have a predetermined relationship based on the received screen aspect ratio information. In any one of Claims 1 thru | or 7,
A screen shape detection unit for detecting the shape of the screen to be used;
The input display area guide image display control unit,
Based on the screen shape detection result, the aspect ratio of the screen is obtained, and when it is determined that the aspect ratio of the screen and the aspect ratio of the display image have a predetermined relationship, an input display area guide image is displayed. Projection type display device. In any one of Claims 1 thru | or 8.
An input aspect ratio information receiving unit that receives input aspect ratio information that is information related to the aspect ratio of the input image to be scheduled;
The input display area guide image display control unit,
A projection display device that displays an input display area guide image corresponding to received input aspect ratio information. A display unit configured to display a display image having a predetermined aspect ratio;
A display control unit for displaying an image to be displayed on the display unit based on input image signals having a plurality of aspect ratios;
A projection unit that projects an image displayed on the display unit onto a screen, and a control method for a projection display device,
An input display area guide image for guiding a display area of an input image in the display image is displayed on the display unit.

Images