JP2013239835A - Projector and projector control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress a waiting time caused by misoperation in a projector movably comprising an anamorphic optical component.SOLUTION: A projector 1 comprises: a projection unit 20 which modulates light emitted from a light source unit 21 to output an image; an anamorphic lens 42 for changing the aspect ratio of the image; a signal reception unit 16 and an operation unit 17 for detecting an operation from the outside; a lens moving mechanism 41 which moves the anamorphic lens 42 in accordance with the operation detected by the signal reception unit 16 or the operation unit 17; and a lens movement control unit 13 which, if the signal reception unit 16 or the operation unit 17 detects an operation indicating the movement of the anamorphic lens 42, allows for selection of whether the anamorphic lens 42 can be moved or not, in advance of moving the anamorphic lens 42 by the lens moving mechanism 41.

Description

  The present invention relates to a projector and a projector control method.

  Conventionally, a projector including an anamorphic optical system for converting an aspect ratio is known (see, for example, Patent Document 1). The projector described in Patent Document 1 includes a mechanism that slides the anamorphic lens, and can switch between a state in which the anamorphic lens is used and a state in which the anamorphic lens is not used according to the aspect ratio of the projected image.

US Pat. No. 7,654,678

By the way, the optical component including the lens is delicate, and the accuracy of the position affects the quality of the projected image. For this reason, as in the case of the anamorphic lens described in Patent Document 1, when the optical component is moved, it is generally not moved at a high speed but moved at a relatively low speed. For this reason, if an operation for instructing movement of the optical component is mistakenly performed, it is necessary to wait for a long time until the movement is completed and the optical component is returned to the original position.
The present invention has been made in view of the above-described circumstances, and an object thereof is to suppress a waiting time due to an erroneous operation in a projector having an anamorphic optical component that is movable.

In order to achieve the above object, a projector according to the present invention includes a projection unit that modulates light emitted from a light source and projects an image, an anamorphic optical component that converts an aspect ratio of the image, and an external operation. When detecting an operation detecting means for detecting, a moving means for moving the anamorphic optical component in accordance with the operation detected by the operation detecting means, and an operation indicating movement of the anamorphic optical component by the operation detecting means, And an optical system control unit that enables selection of whether or not the anamorphic optical component can be moved before the anamorphic optical component is moved by the moving unit.
According to the present invention, when an operation for instructing movement of the anamorphic optical component is performed, it is possible to select not to move the optical component before actually moving the optical component. Can be prevented from moving. Thereby, when the anamorphic optical component is moved by mistake, it is possible to avoid occurrence of a waiting time for returning to the original position.

Further, the present invention is the projector, wherein the optical system control unit moves the anamorphic optical component by the operation detection unit when the operation indicating the movement indicates switching to a use state of the anamorphic optical component. Before detecting whether or not the image can be detected, the anamorphic optical component executes an extension process for extending the image in a direction perpendicular to a direction in which the image is enlarged.
According to the present invention, the image is stretched in the direction perpendicular to the direction in which the anamorphic optical component enlarges the image before detecting whether the anamorphic optical component can move. As a result, the user can more accurately determine whether or not the anamorphic optical component needs to be moved. For example, the anamorphic optical component may not be moved as a result. Therefore, it is possible to prevent an erroneous operation of moving the anamorphic optical component by mistake even though it is not necessary to move the anamorphic optical component, and the occurrence of waiting time can be suppressed. Furthermore, there is an advantage that when the anamorphic optical component is moved, the aspect ratio of the image can be quickly adjusted to a desired state by executing the extension process before the anamorphic optical component is moved.

In the projector according to the aspect of the invention, the optical system control unit may perform the expansion process performed on the image when the operation detection unit detects that the anamorphic optical component is not moved. It is characterized by canceling.
According to the present invention, when the anamorphic optical component is not moved, the extension process can be canceled and the original projection state can be quickly restored, and the waiting time can be shortened.

Further, the present invention is the above projector, wherein the optical system control unit moves the anamorphic optical component by the operation detection unit when the operation indicating the movement indicates switching to a non-use state of the anamorphic optical component. Before detecting whether the image is acceptable, a reduction process for reducing the image in a direction perpendicular to a direction in which the anamorphic optical component enlarges the image is executed.
According to the present invention, the image is reduced in the direction perpendicular to the direction in which the anamorphic optical component enlarges the image before the possibility of movement of the anamorphic optical component is detected. As a result, the user can more accurately determine whether or not the anamorphic optical component needs to be moved. For example, the anamorphic optical component may not be moved as a result. Therefore, it is possible to prevent an erroneous operation of moving the anamorphic optical component by mistake even though it is not necessary to move the anamorphic optical component, and the occurrence of waiting time can be suppressed. Further, by executing the reduction process before the movement of the anamorphic optical component, there is an advantage that the aspect ratio of the image can be quickly adjusted to a desired state when the anamorphic optical component is moved.

Further, the present invention is the above projector, wherein the optical system control unit performs the reduction process performed on the image when the operation detection unit detects that the anamorphic optical component is not moved. It is characterized by canceling.
According to the present invention, when the anamorphic optical component is not moved, the reduction process can be canceled and the original projection state can be quickly restored, and the waiting time can be shortened.

In order to achieve the above object, the present invention provides a projector control method that includes an anamorphic optical component that converts an aspect ratio of an image, modulates light emitted from a light source, and projects an image. Detecting an operation indicating movement of the anamorphic optical component from, a moving step of moving the anamorphic optical component according to an operation indicating the detected movement, and before moving the anamorphic optical component, the anamorphic optical And a step of selecting whether or not the part can be moved.
According to the present invention, when an operation for instructing movement of the anamorphic optical component is performed, it is possible to select not to move the optical component before actually moving the optical component. Can be prevented from moving. Thereby, when the anamorphic optical component is moved by mistake, it is possible to avoid occurrence of a waiting time for returning to the original position.

  According to the present invention, it is possible to prevent the anamorphic optical component from being moved by an erroneous operation, and to avoid waiting time.

It is a functional block diagram of a projector. It is explanatory drawing which shows the example of the process which converts an aspect ratio using an anamorphic lens, (A) shows the example of input image data, (B) shows the example which converted the aspect ratio by image processing, ( C) shows an example of an image projected through an anamorphic lens. It is a flowchart which shows operation | movement of a projector. It is a flowchart which shows operation | movement of a projector. It is explanatory drawing which shows the example of the process which converts an aspect ratio using an anamorphic lens and image processing, (A) shows the example of image data D, (B) shows the example of the image projected through an anamorphic lens. (C) shows an example in which the aspect ratio is converted by image processing, and (D) shows an example of an image projected through an anamorphic lens after image processing.

Embodiments to which the present invention is applied will be described below with reference to the drawings.
FIG. 1 is a block diagram illustrating a functional configuration of a projector 1 according to the embodiment. The projector 1 that projects an image onto a screen SC as a projection surface projects an image onto the screen SC based on image data D input from an external image supply device (not shown) such as a personal computer or various image players. .
The image data D input to the projector 1 may be moving image (video) data or still image data. The projector 1 may project a video on the screen SC, or may display a still image on the screen SC. It is also possible to continue projecting. In the present embodiment, a configuration in which image data D, which is digital image data, is input to the projector 1 will be described. The projector 1 may be configured to A / D convert an analog image signal input from the outside and project an image based on the analog image signal.

The projector 1 includes a projection unit 20 (projection unit) that forms an optical image, and an image processing system that electrically processes an image signal input to the projection unit 20, and each of these units is a control unit. It operates according to 10 controls.
The projection unit 20 includes a light source unit 21, a light modulation device 22, and a projection optical system 23. The light source unit 21 includes a light source such as a xenon lamp, an ultra-high pressure mercury lamp, an LED (Light Emitting Diode), and a laser light source. The light source unit 21 includes a reflector and an auxiliary reflector for guiding the light from the light source to the light modulation device 22, a dimming element (not shown) for dimming the light from the light source on the path to the light modulation device 22, and the like. You may prepare. A light source driving unit 34 is connected to the light source unit 21. The light source driving unit 34 controls power supply to the light source unit 21 according to control of the control unit 10 described later, and turns on and off the light source of the light source unit 21.

  The light modulation device 22 receives a signal from an image processing system, which will be described later, and modulates the light emitted from the light source unit 21 into image light. As a specific configuration of the light modulation device 22, for example, a system using three transmissive or reflective liquid crystal panels (not shown) corresponding to RGB colors can be cited. In this case, the light emitted from the light source unit 21 is incident on the light modulation device 22 after being separated into R, G, and B color light by a dichroic mirror or the like, and each color light is provided by the liquid crystal panel of each color included in the light modulation device 22. Is modulated, and then the respective color lights are combined by the cross dichroic prism and guided to the projection optical system 23. In the present embodiment, the light modulation device 22 includes a transmissive liquid crystal panel. The light modulation device 22 is driven by a light modulation device driving unit 33 described later, and forms an image by changing the light transmittance of each pixel arranged in a matrix.

  The projection optical system 23 includes a projection lens 24 that projects the image light modulated by the light modulation device 22 onto the screen SC. Specifically, the projection lens 24 includes a lens group including a plurality of lenses. By adjusting the position of the projection lens 24, the focus adjustment of the projection image on the screen SC and the zoom adjustment for adjusting the enlargement / reduction of the projection image can be performed. The projection lens 24 includes a focus adjustment unit 26 that performs focus adjustment by moving the projection lens 24 according to the control of the control unit 10, and a zoom adjustment unit 27 that performs zoom adjustment by moving the projection lens 24 according to the control of the control unit 10. It is connected.

  The projection optical system 23 includes an anamorphic lens 42 (anamorphic optical component) that converts the aspect ratio of the image light modulated by the light modulation device 22. The anamorphic lens 42 is incorporated in the anamorphic lens unit 40 together with a lens moving mechanism 41 that moves the anamorphic lens 42, a motor 45 that drives the lens moving mechanism 41, and a position detection unit 46 that detects the position of the anamorphic lens 42. . Here, the lens moving mechanism 41 and the motor 45 correspond to moving means in the claims.

  The lens moving mechanism 41 has a mechanism for slidingly moving the anamorphic lens 42, and is connected to the motor 45 via a speed reduction mechanism or the like. The anamorphic lens 42 is guided by the mechanism of the lens moving mechanism 41 and operates to enter and exit on the optical path of the projection optical system 23, that is, on the optical axis of the projection lens 24. That is, the projector 1 moves the anamorphic lens 42 so that the image light that has passed through the projection lens 24 is projected onto the screen SC through the anamorphic lens 42 (hereinafter referred to as the use state of the anamorphic lens 42). In this configuration, light that has passed through the projection lens 24 can be switched between a state in which the light is projected onto the screen SC without passing through the anamorphic lens 42 (hereinafter referred to as a non-use state).

The motor 45 performs forward rotation and reverse rotation according to control of the control unit 10 described later. The lens moving mechanism 41 moves the anamorphic lens 42 in a direction corresponding to the rotation direction of the motor 45. Therefore, the control unit 10 can control the moving direction and the moving amount of the anamorphic lens 42.
The position detection unit 46 detects the position of the anamorphic lens 42. The position detection unit 46 only needs to be able to detect the current position of the anamorphic lens 42 by the position detection unit 46, and the specific configuration is arbitrary. For example, the position detection unit 46 may be configured to directly detect the position of the anamorphic lens 42 using a linear encoder provided in the lens moving mechanism 41. The position detector 46 can also be configured as a rotary encoder that detects the amount of rotation of the motor 45, or as a counter that counts the number of operation steps of the motor 45 when the motor 45 is a stepping motor.

The image processing system of the projector 1 is configured around a control unit 10 that controls the entire projector 1 in an integrated manner, a storage unit 15 that stores data processed by the control unit 10 and a control program executed by the control unit 10, and a remote controller 50, a signal receiving unit 16 (operation detecting unit) that detects an operation by the operation unit 55, an operation unit 17 (operation detecting unit) that detects an operation on the operation panel 55, an image input unit 18 to which image data D is input, and an image input unit 18. An image processing unit 31 that processes input image data D, and a light modulation device driving unit 33 that performs drawing by driving the light modulation device 22 based on an image signal output from the image processing unit 31 are provided.
The control unit 10 controls each unit of the projector 1 by reading and executing the control program stored in the storage unit 15. The control unit 10 detects the content of the operation performed by the user based on the operation information input from the signal receiving unit 16 or the operation unit 17, and the image processing unit 31 and the light modulation device driving unit 33 according to this operation. The light source drive unit 34, the focus adjustment unit 26, the zoom adjustment unit 27, and the anamorphic lens unit 40 are controlled to project an image on the screen SC.

The projector 1 is configured to be operable when a user inputs an operation to the remote controller 50 and the operation panel 55. The remote controller 50 includes a plurality of input keys 51 and wirelessly transmits an operation signal corresponding to the operated input key 51 to the projector 1 as an infrared wireless signal, for example. The signal receiving unit 16 receives and decodes a radio signal transmitted by the remote controller 50 that operates the projector 1, and specifies the input key 51 operated by the remote controller 50. The signal receiving unit 16 generates operation information indicating the detected input key 51 and outputs the operation information to the control unit 10.
The operation panel 55 is provided in the main body of the projector 1, for example, and includes a plurality of input keys 56. The operation unit 17 is connected to the operation panel 55. The operation unit 17 generates operation information indicating the input key 56 operated on the operation panel 55 and outputs the operation information to the control unit 10. Further, the operation unit 17 controls the lighting state of the indicator lamp of the operation panel 55 according to the operation state and the setting state of the projector 1 according to the control of the control unit 10.

  The image input unit 18 performs a scaling process on the image data D input from the outside, and outputs the processed image data to the image processing unit 31. Here, the image input unit 18 is, for example, a VISA (Video Electronics) such as a DVI (Digital Visual Interface) interface, a USB interface and a LAN interface to which a digital video signal is input, or an HDMI connector compliant with the HDMI (registered trademark) standard. It has an interface having connectors and the like conforming to the DisplayPort (trademark) standard established by Standards Association).

  The image processing unit 31 acquires the image data D output from the image input unit 18 according to the control of the control unit 10, and the image data D is an image size or resolution, whether it is a still image or a moving image, or a moving image. If there is, an attribute such as a frame rate is determined. The image processing unit 31 develops an image in the frame memory 32 for each frame. Further, the image processing unit 31 performs resolution conversion processing when the resolution of the acquired image data D is different from the display resolution of the liquid crystal panel of the light modulation device 22, and zooming is instructed by operating the remote controller 50 or the operation panel 55. In such a case, enlargement / reduction processing is performed, and these processed images are developed in the frame memory 32. Thereafter, the image processing unit 31 outputs the image for each frame developed in the frame memory 32 to the light modulation device driving unit 33 as a display signal.

The control unit 10 implements the functions of the projection control unit 11, the focus control unit 12, and the lens movement control unit 13 by executing the control program stored in the storage unit 15.
The projection control unit 11 initializes each unit of the projector 1 according to the operation detected by the signal receiving unit 16 or the operation unit 17, and controls the light source driving unit 34, the image processing unit 31, and the light modulation device driving unit 33. Project the image.
The focus control unit 12 operates the focus adjustment unit 26 and the zoom adjustment unit 27 in accordance with the operation detected by the signal reception unit 16 or the operation unit 17 to execute focus adjustment and zoom adjustment.
The lens movement control unit 13 drives the motor 45 of the anamorphic lens unit 40 according to the operation detected by the signal receiving unit 16 or the operation unit 17 to move the anamorphic lens 42 to determine whether the anamorphic lens 42 is used or not used. Switch between states. The lens movement control unit 13 detects the position of the anamorphic lens 42 by the position detection unit 46. Here, the lens movement control unit 13 corresponds to the optical system control means in the claims.

  FIG. 2 is a diagram illustrating an example of processing for converting the aspect ratio of an image using the anamorphic lens 42. 2A shows the image 101 indicated by the image data D, and FIG. 2B shows the image 102 that has been subjected to image processing for converting the aspect ratio of the image 101 shown in FIG. 2A. FIG. 2C shows an image 103 in which image light indicating the image 102 of FIG. 2B is projected through the anamorphic lens 42.

The projector 1 can use the anamorphic lens 42 to convert the aspect ratio and project it onto the screen SC. Specifically, the projector 1 can project an image that is longer than the aspect ratio of the drawing area of the light modulation device 22. . The anamorphic lens 42 is a lens that converts an image with an aspect ratio of 16: 9 into a cinemascope size of 2.4: 1, for example.
As an example, as shown in FIG. 2A, it is assumed that the image data D includes a 2.4: 1 image 101 in a frame 100 having an aspect ratio of 16: 9. Further, it is assumed that the drawing area of the light modulation device 22 corresponds to 16: 9. In this case, the image data D input to the projector 1 is a letterbox having black bands on the top and bottom. When the image data D is projected without using the anamorphic lens 42, an image 101 with a black band is drawn on the light modulation device 22 as shown in FIG. 2A and projected onto the screen SC. The projected image 101 has an aspect ratio of 2.4: 1, but a part of the drawing area of the light modulation device 22 is not used because it is a black belt, and can therefore be projected on the screen SC. Projected smaller than the area. Although it is possible to enlarge and project by the function of the zoom adjustment unit 27, the image quality and brightness are slightly inferior to the case of drawing on the entire drawing area of the light modulation device 22.

When projecting using the anamorphic lens 42, the lens movement control unit 13 controls the image processing unit 31 to perform image processing (extension processing) for extending the aspect ratio of the image data D in the vertical direction (vertical direction). . As a result, as shown in FIG. 2B, the projector 1 projects the image 102 that is elongated and stretched substantially over the entire 16: 9 frame 100. The image 102 shown in FIG. 2B is drawn using almost the entire drawing area of the light modulation device 22.
Then, as shown in FIG. 2C, the projector 1 causes the image light shown by the image 102 in FIG. 2B to pass through the anamorphic lens 42, so that the image 103 having an aspect ratio of 2.4: 1 is displayed on the screen SC. Project. Since the image 103 is drawn on almost the entire drawing area of the light modulation device 22, the image quality and brightness are better than those of the image 101 shown in FIG.

When performing projection as shown in FIGS. 2B and 2C, the use of the anamorphic lens 42 is instructed by the operation of the remote controller 50 or the operation panel 55, and the lens movement control unit 13 drives the motor 45, The anamorphic lens 42 is moved on the optical path of the projection optical system 23.
Since this movement takes time, the lens movement control unit 13 detects the operation for instructing the movement of the anamorphic lens 42 by the signal reception unit 16 or the operation unit 17 before actually driving the motor 45. Then, a screen for confirming whether or not to move the anamorphic lens 42 is projected. When the movement of the anamorphic lens 42 is instructed again by the operation of the remote controller 50 or the operation panel 55 in a state where this screen is projected, the lens movement control unit 13 moves the motor 45 to put the anamorphic lens 42 into a use state. .

FIG. 3 is a flowchart showing the operation of the projector 1, and particularly shows the operation when the movement of the anamorphic lens 42 to the use state is instructed by the operation of the remote controller 50 or the operation panel 55.
When an instruction related to changing the aspect ratio is detected by the signal receiving unit 16 or the operation unit 17 (step S11), the lens movement control unit 13 converts the setting menu screen for setting the aspect ratio into an input image by the projection unit 20. Superimpose and project (step S12). The lens movement control unit 13 detects an operation in which the mode (anamorphic mode) using the anamorphic lens 42 is selected as the aspect ratio setting by the signal receiving unit 16 or the operation unit 17 during the projection of the setting menu screen. Whether or not (step S13). Specifically, for example, the user operates the remote controller 50 or the operation panel 55 from the setting menu screen, and selects an anamorphic mode from several aspect ratios. When the projection of the setting menu screen is terminated without detecting the operation for selecting the anamorphic mode (step S13; No), the lens movement control unit 13 terminates the projection of the setting menu screen and ends the present process.

On the other hand, when an operation for selecting the anamorphic mode is detected (step S13; Yes), the lens movement control unit 13 corresponds to the use of the anamorphic lens 42 and the image data D shown in FIG. A decompression process for decompressing in the vertical direction is executed by the image processing unit 31 (step S14). Here, the image projected by the projector 1 is a vertically long image as shown in FIG.
Subsequently, the lens movement control unit 13 detects the position of the anamorphic lens 42 by the position detection unit 46, and determines whether or not the anamorphic lens 42 is in an unused state based on the detected position (step S15). . When the anamorphic lens 42 is on the optical path of the projection optical system 23, that is, when the anamorphic lens 42 is in use (step S15; No), the lens movement control unit 13 ends this process. In this case, since the image projected by the projector 1 is subjected to the expansion process in step S14 and is projected through the anamorphic lens 42, the image is projected in a suitable state.

  When the anamorphic lens 42 is not in use (step S15; Yes), the lens movement control unit 13 causes the image processing unit 31 to display a confirmation menu screen for confirming whether to move the anamorphic lens 42 to switch to the use state. Drawing and projecting on the screen SC (step S16). This confirmation menu screen is a screen on which, for example, a message for guiding whether or not to move the anamorphic lens 42 to enter the use state is displayed, and whether or not the anamorphic lens 42 can be moved can be selected. is there.

  Then, the lens movement control unit 13 determines whether the operation input during the display of the confirmation menu screen is an operation for selecting movement of the anamorphic lens 42 (step S17). Here, when the movement of the anamorphic lens 42 is selected (step S17; Yes), the lens movement control unit 13 drives the motor 45 to move the anamorphic lens 42 onto the optical path of the projection optical system 23 and is in a use state. (Step S18), and this process is terminated. On the other hand, when it is selected not to move the anamorphic lens 42 (step S17; No), the lens movement control unit 13 cancels the expansion process executed in step S14 and changes the aspect ratio of the projected image. The state of the input image data is set (step S19), and this process ends.

FIG. 4 is a flowchart showing the operation of the projector 1, and particularly shows the operation when the movement of the anamorphic lens 42 to the non-use state is instructed by the operation of the remote controller 50 or the operation panel 55.
When an instruction related to changing the aspect ratio is detected by the signal receiving unit 16 or the operation unit 17 (step S31), the lens movement control unit 13 displays the setting menu screen for setting the aspect ratio as in step S12. And is projected on the screen (step S32). The lens movement control unit 13 determines whether or not an operation in which a mode not using the anamorphic lens 42 is selected as the aspect ratio setting, that is, an operation to cancel the anamorphic mode is detected during the projection of the setting menu screen. (Step S33). This operation is, for example, an operation in which the user operates the remote controller 50 or the operation panel 55 from the setting menu screen to select an aspect ratio other than the anamorphic mode among several aspect ratios. When the projection of the setting menu screen is finished without detecting the operation for selecting the cancellation of the anamorphic mode (step S33; No), the lens movement control unit 13 finishes the projection of the setting menu screen and ends the present process.

On the other hand, when an operation for selecting cancellation of the anamorphic mode is detected (step S33; Yes), the lens movement control unit 13 performs compression processing by the image processing unit 31 in response to the fact that the anamorphic lens 42 is not used. Is executed (step S34). In this compression processing, the anamorphic lens 42 enlarges the image in order to return the aspect ratio of the image subjected to the decompression processing as shown in FIG. 2 (B) to the state shown in FIG. 2 (A). This is a process of compressing an image in a direction perpendicular to the direction. Here, in the example described with reference to FIG. 2, the image 103 in FIG. 2C projected using the anamorphic lens 42 is compressed in a direction perpendicular to the direction in which the anamorphic lens 42 enlarges the image. Since the process is executed, the image projected by the projector 1 is a horizontally long image, and an image in which black areas are formed vertically like the image 101 in FIG.
Subsequently, the lens movement control unit 13 detects the position of the anamorphic lens 42 by the position detection unit 46, and determines whether or not the anamorphic lens 42 is in use based on the detected position (step S35). When the anamorphic lens 42 is not on the optical path of the projection optical system 23, that is, when the anamorphic lens 42 is not in use (step S35; No), the lens movement control unit 13 ends this processing. In this case, the image projected by the projector 1 is subjected to the compression process in step S34 and is projected without passing through the anamorphic lens 42. This image has the same aspect ratio as that of the original image data D or a normal aspect ratio designated by the operation of the remote controller 50 or the operation panel 55, and is projected in a suitable state. That is, the execution of the compression process is equivalent to releasing the decompression process.

  When the anamorphic lens 42 is in use (step S35; Yes), the lens movement control unit 13 causes the image processing unit 31 to display a confirmation menu screen for confirming whether to move the anamorphic lens 42 to switch to the non-use state. Drawing and projecting on the screen SC (step S36). In this confirmation menu screen, for example, a message for guiding whether or not to move the anamorphic lens 42 to make it unusable is displayed, and it is possible to select whether or not the anamorphic lens 42 can be moved. It is.

  Then, the lens movement control unit 13 determines whether or not the operation input while the confirmation menu screen is displayed is an operation for selecting movement of the anamorphic lens 42 (step S37). When the movement of the anamorphic lens 42 is selected (step S37; Yes), the lens movement control unit 13 drives the motor 45 to move the anamorphic lens 42 from the optical path of the projection optical system 23 to the standby position. To make it in a non-use state (step S38), and this process is terminated. On the other hand, when it is selected not to move the anamorphic lens 42 (step S37; No), the lens movement control unit 13 cancels the compression processing executed in step S34 and changes the aspect ratio of the projected image. Then, the image is projected when the anamorphic mode is selected (step S39), and this process is terminated. Here, the cancellation of the compression process corresponds to executing the expansion process. With the above processing, when the anamorphic mode is shifted to the non-use mode of the anamorphic lens 42, the aspect ratio of the projected image can be quickly returned to the state before the anamorphic lens 42 is used. Further, since the confirmation menu screen is projected before the anamorphic lens 42 is moved, an erroneous operation can be prevented.

  Further, the projector 1 can project an image with an aspect ratio of 16: 9 even when the anamorphic lens 42 is in use. For example, as shown in FIG. 2, the projector 1 performs an expansion process on the image 101 indicated by the input image data whose image aspect ratio is 2.4: 1, and projects the image 103 through the anamorphic lens 42. In the state where the aspect ratio of the input image data is switched from 2.4: 1 to 16: 9, the projector 1 uses the anamorphic lens 42 to display the image indicated by the input image data as a 16: 9 image. Can project as.

FIG. 5 illustrates processing for converting the aspect ratio by using the anamorphic lens 42 and executing image processing. 5A shows an image 201 indicating the image data D, and FIG. 5B shows an image obtained by performing the same decompression processing on the image 201 as the image 102 of FIG. 2B. 5C shows an image 202 in which light is projected through the anamorphic lens 42, FIG. 5C shows an image 203 on which image processing for converting an aspect ratio is performed on the image 201, and FIG. An image 204 in which the image light indicating the image 203 of 5 (C) is projected through the anamorphic lens 42 is shown.
FIG. 5A shows an example of image data D including an image 201 having the same aspect ratio in a 16: 9 frame 100. When the projector 1 performs the extension process in the vertical direction described with reference to FIG. 2B and projects the image 201 with the anamorphic lens 42, the image projected by the projector 1 is illustrated in FIG. 5B. Thus, the image 202 is cut off at the upper and lower ends.

Therefore, as shown in FIG. 5C, the lens movement control unit 13 controls the image processing unit 31 to compress the image data D of the image 201 shown in FIG. 5A in the horizontal direction. Execute the process. The image 203 subjected to this image processing is in a state in which the width is compressed with respect to the frame 100 having an aspect ratio of 16: 9. Here, it is preferable that the compression ratio for compressing the horizontal width is the reciprocal of the enlargement ratio at which the anamorphic lens 42 enlarges the image in the horizontal direction.
When the image 203 compressed in the horizontal direction in FIG. 5C is drawn on the light modulation device 22 and projected through the anamorphic lens 42, the image projected by the projector 1 is as shown in FIG. The image 204 maintains the aspect ratio of the image 201 of 5 (A) and the end portion is not cut. An image 203 and an image 204 shown in FIGS. 5C and 5D are obtained by drawing or projecting a 16: 9 image in a 2.4: 1 horizontal region projected using the anamorphic lens 42. Because it is, it is in the state of the side panel (pillar box).
As described above, the projector 1 can project an image suitable for projection without using the anamorphic lens 42 while performing the image processing for compressing the image in the horizontal direction while the anamorphic lens 42 is in a use state.

  As described above, according to the projector 1 according to the embodiment to which the present invention is applied, the projector 1 projects an image based on the input image data D, and modulates the light emitted from the light source unit 21. Are detected by the projection unit 20 that projects the image, the anamorphic lens 42 that converts the aspect ratio of the image, the signal reception unit 16 and the operation unit 17 that detect an external operation, and the signal reception unit 16 or the operation unit 17. The lens moving mechanism 41 that moves the anamorphic lens 42 in response to the operation, and when the operation indicating movement of the anamorphic lens 42 is detected by the signal receiving unit 16 or the operation unit 17, the lens moving mechanism 41 moves the anamorphic lens 42. Lens movement control unit 1 that enables selection of whether or not the anamorphic lens 42 can be moved before And, equipped with a. As a result, when the movement of the anamorphic lens 42 is instructed by the remote controller 50 or the operation panel 55, it is possible to select not to move the anamorphic lens 42 before moving the anamorphic lens 42 which takes time. For this reason, it is possible to prevent the anamorphic lens 42 from being moved by an erroneous operation. Thereby, when the anamorphic optical component is moved by mistake, it is possible to avoid occurrence of a waiting time for returning to the original position.

  In addition, when the operation detected by the signal receiving unit 16 or the operation unit 17 indicates switching to the usage state of the anamorphic lens 42, the lens movement control unit 13 causes the signal receiving unit 16 or the operation unit 17 to move the anamorphic lens 42. Before the availability is detected, an expansion process is performed to expand the image in a direction perpendicular to the direction in which the anamorphic lens 42 enlarges the image. As a result, the user can more accurately determine whether or not the anamorphic lens 42 needs to be moved. For example, the anamorphic lens 42 may not be moved as a result. Therefore, it is possible to prevent an erroneous operation of moving the anamorphic lens 42 by mistake even though it is not necessary to move the anamorphic lens 42, and to suppress the occurrence of waiting time. Furthermore, there is an advantage that when the anamorphic lens 42 is moved, the aspect ratio of the image can be quickly adjusted to a desired state by executing the expansion process before the anamorphic lens 42 is moved.

  The lens movement control unit 13 cancels the decompression process performed on the image when it is detected by the signal receiving unit 16 or the operation unit 17 that the anamorphic lens 42 is not moved. As a result, when the anamorphic lens 42 is not moved, the expansion process is canceled, and the original projection state can be quickly restored, and the waiting time can be shortened.

  In addition, the lens movement control unit 13 uses the signal reception unit 16 or the operation unit 17 to perform an anamorphic operation when the operation indicating the movement detected by the signal reception unit 16 or the operation unit 17 indicates switching to the non-use state of the anamorphic lens 42. Before detecting whether or not the optical component can be moved, a reduction process for reducing (compressing) the image in a direction perpendicular to the direction in which the anamorphic lens 42 enlarges the image is executed. Thus, the user can more accurately determine whether or not the anamorphic lens 42 needs to be moved. Further, by executing the compression process before the movement of the anamorphic lens 42, there is an advantage that the aspect ratio of the image can be adjusted quickly when the anamorphic lens 42 is not used.

  The lens movement control unit 13 cancels the compression processing performed on the image when it is detected by the signal receiving unit 16 or the operation unit 17 that the anamorphic lens 42 is not moved. When it is not moved, it can quickly return to the original projection state.

The above-described embodiment is merely an example of a specific mode to which the present invention is applied, and the present invention is not limited. The present invention can be applied as a mode different from the above-described embodiment. For example, in the above-described embodiment, the light modulation device 22 has been described by taking as an example a configuration using three transmissive liquid crystal panels corresponding to RGB colors, but the present invention is not limited to this. For example, a reflective liquid crystal panel may be used, or a configuration using three digital mirror devices (DMD) that modulate color lights of RGB colors may be used.
Moreover, although the said embodiment demonstrated the structure provided with the anamorphic lens 42 as an example of an anamorphic optical component, this invention is not limited to this. The anamorphic optical component of the present invention is not limited to a lens as long as it is an optical component that can convert the aspect ratio of image light modulated by the light modulation device 22, and a prism can also be used, for example. Moreover, in the said embodiment, although the projector 1 gave and demonstrated as an example the structure which projects the image based on the image data D supplied from an external apparatus, the projector 1 is the memory | storage part 15, another memory | storage device, or Of course, it is possible to project video and images based on image data stored in a portable storage medium.

  Moreover, each function part shown in FIG. 1 shows the functional structure of the projector 1, Comprising: A specific mounting form in particular is not restrict | limited. In other words, it is not always necessary to individually implement hardware corresponding to each functional unit, and it is of course possible to implement a configuration in which the functions of some functional units are realized by software by the processor executing a program. There are other detailed configurations that can be arbitrarily changed.

  In the present embodiment, the use / nonuse switching of the anamorphic lens 42 can be selected by changing the aspect ratio by an operation during projection on the setting menu screen. However, the present invention is not limited to this. For example, the projection mode such as the theater mode that projects in the aspect ratio of the anamorphic mode and the normal mode that projects without using the anamorphic lens 42 are associated with the aspect ratio, and these projection modes are selected from the setting menu screen. Thus, the projection mode may be switched (set) and the use / non-use of the anamorphic lens 42 may be automatically switched.

  Further, in the present embodiment, the setting menu screen for setting the aspect ratio by the projector 1 has been described as an example in which it is displayed superimposed on the input image. However, the present invention is not limited to this, and for example, A setting menu screen is displayed in an image area corresponding to a portion where an input image is not formed on a liquid crystal panel (not shown) included in the light modulation device 22 (for example, a black area of the image 101 in FIG. 2A). Alternatively, the input image formed on the liquid crystal panel (not shown) may be reduced to create a portion where no image is formed as described above, and set an image area corresponding to this portion. The menu screen may be displayed.

  DESCRIPTION OF SYMBOLS 1 ... Projector, 10 ... Control part, 11 ... Projection control part, 12 ... Focus control part, 13 ... Lens movement control part (optical system control means), 15 ... Memory | storage part, 16 ... Signal receiving part (operation detection means), DESCRIPTION OF SYMBOLS 17 ... Operation part (operation detection means), 20 ... Projection part (projection means), 21 ... Light source part, 22 ... Light modulation device, 23 ... Projection optical system, 24 ... Projection lens, 40 ... Anamorphic lens unit, 41 ... Lens Moving mechanism (moving means) 42... Anamorphic lens (anamorphic optical component) 45 45 Motor 46 Position detector 50 Remote control 55 Operation panel SC Screen

Claims (6)

A projection means for projecting an image by modulating light emitted from the light source;
An anamorphic optic that converts the aspect ratio of the image;
Operation detecting means for detecting an operation from the outside;
Moving means for moving the anamorphic optical component in accordance with the operation detected by the operation detecting means;
When the operation indicating the movement of the anamorphic optical component is detected by the operation detecting means, an optical system control that enables selection of whether or not the anamorphic optical component can be moved before moving the anamorphic optical component by the moving means. Means,
A projector comprising: The projector according to claim 1,
When the operation indicating the movement indicates switching to a use state of the anamorphic optical component, the optical system control unit may determine whether the anamorphic optical component can be moved before the operation detection unit detects whether the anamorphic optical component can be moved. A projector that performs a decompression process for decompressing the image in a direction perpendicular to a direction in which the component enlarges the image. The projector according to claim 2,
The projector according to claim 1, wherein the optical system control unit cancels the expansion process performed on the image when the operation detection unit detects that the anamorphic optical component is not moved. The projector according to claim 2 or 3,
When the operation indicating the movement indicates switching of the anamorphic optical component to a non-use state, the optical system control means may detect the anamorphic optical component before the operation detecting means detects whether the anamorphic optical component is movable. A projector that performs a reduction process for reducing the image in a direction perpendicular to a direction in which the optical component enlarges the image. The projector according to claim 4,
The optical system control unit cancels the reduction process performed on the image when the operation detection unit detects that the anamorphic optical component is not moved. A control method for a projector that includes an anamorphic optical component that converts an aspect ratio of an image, modulates light emitted from a light source, and projects an image.
Detecting an operation indicating movement of the anamorphic optical component from the outside;
Moving the anamorphic optical component in response to an operation indicating the detected movement;
Enabling the movement of the anamorphic optical component to be selectable before moving the anamorphic optical component; and
A projector control method comprising:

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