JP2013251592A - Display device and control method for the same - Google Patents

Abstract

An image such as an OSD image different from an input image is effectively displayed together with the input image.
An image output unit that outputs image data of a left-eye image and a right-eye image based on input image data, an OSD image storage area that stores OSD image data, and an image output unit. Includes a display processing unit 15 that combines the OSD image data 10A and 10B with the image data output from the display unit 40, and a display unit 40 that displays an image based on the combined image data. An address selection unit for designating an address where the OSD image data 10A is stored when the image data is for the right eye, and for designating an address where the OSD image data 10B is stored when the image data is the image data for the right eye 35, and a synthesis processing unit 31 that reads out and synthesizes the OSD image data 10A and 10B from the designated addresses.
[Selection] Figure 1

Description

  The present invention relates to a display device that displays an image and a control method of the display device.

2. Description of the Related Art Conventionally, a display device that displays an input image has a function of displaying an image that is superimposed on an image that is being displayed and that is different from the input image (for example, see Patent Document 1). This type of function is called an OSD display function, for example, and a setting menu screen or the like is displayed as an OSD image together with the input image. As described in Patent Document 1, in a general OSD display function, an OSD image stored in advance is superimposed on an input image. The apparatus described in Patent Document 1 displays OSD images of various colors by synthesizing the colors of the OSD images in units of pixels.
In recent years, display devices that display 3D (stereoscopic) images are known. This type of display device has a configuration using a glasses-type polarizing filter (see, for example, Patent Document 2) and a configuration in which a lenticular lens is disposed on a display surface (for example, see Patent Document 3). By displaying a different image on the left eye, a three-dimensional image is displayed.

JP 2008-216460 A JP 7-284128 A JP-A-5-304685

By the way, regarding the function of displaying an image different from the input image in a superimposed manner, such as the OSD display function, how to display the OSD image or the like when the input image is a stereoscopic image has been conventionally solved. There was no problem. A stereoscopic image is composed of a pair of right-eye images and left-eye images. In contrast, a conventional OSD image or the like is a planar image. For this reason, processing cannot be performed in the same manner as when two planar images are superimposed, but there has been no example of how to superimpose an OSD image composed of a planar image on a stereoscopic image.
Many display devices that display stereoscopic images also support display of planar images. For this reason, the input image may be a planar image or a stereoscopic image. However, it has not been studied how to combine the process of superimposing images depending on whether the input image is a stereoscopic image or a planar image.
The present invention has been made in view of the above-described circumstances, a display device capable of effectively displaying an image such as an OSD image different from the input image together with the input image, and control of the display device. It aims to provide a method.

In order to solve the above problems, the present invention is a display device that displays a stereoscopic image including a left-eye image and a right-eye image based on input image data, and an image of a left-eye image based on the input image data. Image output means for outputting data and image data of a right eye image, a memory storing different image data for left eye, which is image data different from the input image data, and different image data for right eye, Image processing means for combining the image data output by the image output means with the separate image data for the left eye or the separate image data for the right eye stored in the memory, and the image combined by the image processing means Display means for displaying an image based on the data, and the image processing means stores in the memory when the acquired image data is image data of a left-eye image. And the address where the separate image data for the left eye is stored and the acquired image data is the image data of the right eye image, the address where the separate image data for the right eye is stored in the memory. It is characterized by comprising: a read control means for designating; and a composition processing means for performing processing for reading out the separate image data from the address designated by the read control means and compositing with the acquired image data.
According to the present invention, the display device that outputs the image data of the left-eye image and the image data of the right-eye image based on the input image data and displays the stereoscopic image is stored in the memory of the image data of the left-eye image. The left image data for the left eye is combined, and the image data for the right eye is combined with the image data for the right eye stored in the memory. This processing is executed by the image processing means acquiring the image data of the input image and the separate image data. In this process, the image processing means designates the address where the image data for the left eye is stored when the image data for the left eye is acquired, and separates for the right eye when the image data for the right eye is acquired. Specifies the address where the image data is stored. Then, the image processing means performs processing for acquiring and synthesizing the separate image data at the designated address. As a result, the left-eye image data and the right-eye image data are respectively synthesized with the left-eye image data and the right-eye image data based on the input image, for example, a stereoscopic image. Another image can be combined with the input image and displayed as a stereoscopic image, and an image such as an OSD image can be effectively displayed. In addition, in the process of combining separate image data for the left eye and separate image data for the right eye, the address of the memory is specified according to whether the image data of the input image to be processed is for the left eye or for the right eye. Another image data to be acquired is acquired. Therefore, it is possible to efficiently perform the process of acquiring and synthesizing the separate image data for the left eye and the separate image data for the right eye.

Further, the present invention is the above display device, wherein the memory is constituted by a volatile memory, and each of the plurality of different image data including the different image data for the left eye and the different image data for the right eye is provided. The stored non-volatile memory and the separate image data to be displayed are read from the non-volatile memory, and the separate image data for the left eye included in the read separate image data is converted into left-eye data in the memory. Another image management means for storing the separate image data for the right eye contained in the read separate image data at a corresponding address and storing it in the address corresponding to the data for the right eye in the memory. It is characterized by.
According to the present invention, it is possible to synthesize the image data for the left eye and the image data for the right eye with the input image data by storing them in the corresponding addresses. That is, the display device of the present invention can use a plurality of different image data stored in the non-volatile memory, and the different image data to be used is stored in a corresponding address in the memory to input the different image data. It can be combined with image data. This eliminates the need for complicated management such as assigning a uniform name to different image data, or specifying the address of another image data to be used from time to time. There is an advantage that management becomes easy.

The present invention is the display device described above, further comprising a buffer for temporarily storing the image data output by the image output unit, wherein the image processing unit acquires the image data from the buffer and performs the separate processing. Performing a process of synthesizing image data, wherein the read control means determines whether the image data acquired from the buffer is image data of a left-eye image or image data of a right-eye image, and designates an address of the memory; It is characterized by.
According to the present invention, when image data is acquired from a buffer and it is determined whether the acquired image data is left-eye image data or right-eye image data, another image data corresponding to the acquired image data is read from the memory. be able to.

Further, the present invention is the display device, wherein the image output means alternately outputs image data of the left eye image and image data of the right eye image, and the image data being output is data of the left eye image. The read control means outputs the identification signal indicating whether the image data is the right-eye image data or the right-eye image data. It is determined whether the data is image data, and an address of the memory is designated.
According to the present invention, whether the image data of the left-eye image and the image data of the right-eye image that are alternately output is the data of the left-eye image or the data of the right-eye image based on the identification signal. Then, separate image data is acquired from each appropriate address and synthesized. Thereby, the process which synthesize | combines the separate image data corresponding to each of the data of the image for left eyes, and the image data of the image for right eyes can be performed rapidly.

Further, the present invention is the display device, wherein the image output means is based on the image data of the stereoscopic image in the frame sequential format, the line alternative format, or the side-by-side format, and the image data of the left-eye image and the image of the right-eye image Data is generated and output alternately, and an identification signal indicating whether the image data being output is data for a left-eye image or data for a right-eye image is generated and output.
According to the present invention, separate image data corresponding to each of the left-eye image data and the right-eye image data that are alternately output based on the frame sequential format, line alternative format, or side-by-side stereoscopic image data. Can be quickly synthesized.

In order to solve the above-described problem, the present invention provides a control method for a display device that displays a stereoscopic image including a left-eye image and a right-eye image based on input image data, based on the input image data. When the image data of the left-eye image and the image data of the right-eye image are output, the output image data is acquired, and the acquired image data is the image data of the left-eye image, the input image data is When the address where the separate image data for the left eye is stored is specified in the memory storing the separate image data which is another image data, and the acquired image data is the image data of the right eye image, the memory A process for designating an address at which the separate image data for the right eye is stored, reading the separate image data from the specified address, and synthesizing the acquired image data. There, characterized in that, for displaying an image based on the processed left-eye image data and the right-eye image data.
According to the present invention, the image data of the left eye image is stored in the memory by the display device that outputs the image data of the left eye image and the image data of the right eye image based on the input image data and displays the stereoscopic image. The left image data for the left eye is combined, and the image data for the right eye is combined with the image data for the right eye stored in the memory. This processing is executed by the image processing means acquiring the image data of the input image and the separate image data. In this process, the image processing means designates the address where the image data for the left eye is stored when the image data for the left eye is acquired, and separates for the right eye when the image data for the right eye is acquired. Specifies the address where the image data is stored. Then, the image processing means performs processing for acquiring and synthesizing the separate image data at the designated address. As a result, the left-eye image data and the right-eye image data are respectively synthesized with the left-eye image data and the right-eye image data based on the input image, for example, a stereoscopic image. Another image can be combined with the input image and displayed as a stereoscopic image, and an image such as an OSD image can be effectively displayed. In addition, in the process of combining separate image data for the left eye and separate image data for the right eye, the address of the memory is specified according to whether the image data of the input image to be processed is for the left eye or for the right eye. Another image data to be acquired is acquired. Therefore, it is possible to efficiently perform the process of acquiring and synthesizing the separate image data for the left eye and the separate image data for the right eye.

  According to the present invention, it is possible to effectively display an image such as an OSD image by combining corresponding image data with each of the image data of the left-eye image and the image data of the right-eye image based on the input image. .

It is a functional block diagram of the projector which concerns on 1st Embodiment. It is a figure which shows typically the structure of an OSD image storage area. It is a functional block diagram of the image processing part of a projector. It is a timing chart which shows the output state of the Vsync signal and right-and-left identification signal which a projector processes. It is a figure which shows the example of the image which the image process part of a projector outputs, (A) shows the example of the image for left eyes, (B) shows the example of the image for right eyes. It is a flowchart which shows operation | movement of a projector. It is a functional block diagram of the image processing part of the projector which concerns on 2nd Embodiment. FIG. 10 is a functional block diagram of an image processing unit of a projector according to a third embodiment. It is a functional block diagram of the image processing part of the projector which concerns on 4th Embodiment.

[First Embodiment]
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing an overall configuration of a projector 1 as a display device according to the first embodiment. The projector 1 is connected to an external image supply device (not shown) such as a personal computer or various video players, and projects input image data S1 input from the image supply device onto a projection surface such as a screen SC. . Examples of the image supply device include a video playback device, a DVD playback device, a TV tuner device, a CATV set top box, a video output device such as a video game device, and a personal computer. In the present embodiment, a case where digital image data of a moving image is input as input image data S1 from the image supply apparatus to the display processing unit 15 will be described as an example. The digital image data includes information related to the format of the digital image data (including a stereoscopic video format, a frame rate, and the like) along with the image data itself.
The projector 1 can display either a still image or a moving image (video). In the following description, the case of displaying and outputting a moving image input from the image supply device will be described as an example. However, in the following description, the process of displaying the input image data S1 is also performed when displaying a still image. It can be applied as it is.
In the present embodiment, the screen SC is almost upright, and the screen surface is rectangular.

The projector 1 includes a display unit 40 (display unit) that forms an optical image roughly and an image processing system that electrically processes an image displayed by the display unit 40. The display unit 40 includes a light source unit 41, a light modulation device 42, and a projection optical system 43. The light source unit 41 includes a light source including a xenon lamp, an ultrahigh pressure mercury lamp, an LED, and the like. The light source unit 41 may include a reflector and an auxiliary reflector that guide light emitted from the light source to the light modulation device 42, and a lens group (not shown), a polarizing plate, A light control element or the like that reduces the amount of light emitted from the light source on the path to the light modulation device 42 may be provided.
The light modulation device 42 corresponds to a modulation unit that modulates light emitted from the light source unit 41 based on image data. The light modulation device 42 is configured by, for example, a system using three transmissive or reflective liquid crystal light valves corresponding to each color of RGB, a system using three digital mirror devices, and the like. In addition, the light modulation device 42 may be configured by a DMD method in which a color wheel that transmits RGB light among light included in white light emitted from a light source and a single digital mirror device (DMD) are combined. it can. In this embodiment, the light modulation device 42 is configured using a liquid crystal light valve. The light modulation device 42 includes a transmissive liquid crystal panel in which a plurality of pixels are arranged in a matrix, forms an image with the plurality of pixels, and modulates light emitted from a light source with the formed image. The light modulation device 42 is driven by a light modulation device driving unit 17 described later, and forms an image by changing the light transmittance in each pixel arranged in a matrix.

The projection optical system 43 includes a zoom lens that performs enlargement / reduction of a projected image and a focus adjustment, a zoom adjustment motor that adjusts the degree of zoom, a focus adjustment motor that performs focus adjustment, and the like. The projection optical system 43 forms an image by projecting the light modulated by the light modulation device 42 onto the screen SC using a zoom lens.
The display unit 40 includes a projection optical system driving unit 18 that drives each motor included in the projection optical system 43 according to the control of the control unit 10, and a light source driving unit that drives the light source included in the light source unit 41 according to the control of the control unit 10. 19 is connected.

  The image processing system is configured around a control unit 10 that integrally controls the entire projector 1, and includes a RAM 11 that temporarily stores data processed by the control unit 10, a program executed by the control unit 10, and the control unit 10. A non-volatile storage unit 12 (non-volatile memory) that stores data to be processed by the control unit 10 and a program executed by the control unit 10, an input processing unit 13 that detects an operation via the operation panel 51 and the remote control light receiving unit 52, and a control unit A display processing unit 15 (image processing means) that processes the input image data S1 according to 10 control, and a light modulation device that performs drawing by driving the light modulation device 42 based on the video signal output from the display processing unit 15 A drive unit 17 is provided.

  The control unit 10 (separate image management unit) controls each unit of the projector 1 by reading and executing a control program stored in the nonvolatile storage unit 12. The control unit 10 detects the content of the operation performed by the user based on the operation signal input from the input processing unit 13, and the display processing unit 15, the light modulation device driving unit 17, and the projection optical system according to this operation. The drive unit 18 and the light source drive unit 19 are controlled to project an image on the screen SC.

The nonvolatile storage unit 12 is configured by a semiconductor storage element such as PROM, EEPROM, flash memory, or a magnetic storage device, and stores programs and data in a nonvolatile manner. The non-volatile storage unit 12 stores OSD image data 12A (separate image data) in addition to the control program and data described above.
The OSD image data 12A is image data of an image (different image) different from the input image data S1, such as a menu image (setting image) for performing settings related to the function of the projector 1, and the OSD image data. 12A is superimposed on the input image data S1 and displayed on the screen SC. The nonvolatile storage unit 12 can also store a plurality of OSD image data 12A. Of the OSD image data 12A stored in the nonvolatile storage unit 12, OSD image data 12A to be displayed on the screen SC is read by the control unit 10 and stored in the RAM 11. The display processing unit 15 reads out the OSD image data 12A from the RAM 11, performs a process of superimposing the OSD image data 12A on the image data for each frame of the input image data S1, and synthesizes the combined image, with the display image data S8. Is output to the light modulation device driving unit 17. The light modulation device driving unit 17 performs drawing on the liquid crystal panel of the light modulation device 42 based on the display image data S8, whereby the synthesized image is projected onto the screen SC.
The OSD image data 12A corresponds to the fact that the input image data S1 is a three-dimensional image and includes an image for the left eye and an image for the right eye, and the OSD image data for the left eye and the OSD image data for the right eye. And are paired together. That is, one OSD image data 12A includes a pair of left-eye OSD image data 10A (left-eye separate image data) and right-eye OSD image data 10B (right-eye separate data, as will be described later with reference to FIG. Image data). The left-eye OSD image data 10A is combined with the left-eye image included in the input image data S1, and the right-eye OSD image data 10B is combined with the right-eye image included in the input image data S1. .

The RAM 11 is composed of a volatile semiconductor storage element such as a DRAM, and stores programs, data, and the like. Further, the RAM 11 is provided with an OSD image storage area 11A. The OSD image data 12A read from the nonvolatile storage unit 12 by the control unit 10 is stored in the OSD image storage area 11A.
FIG. 2 is a diagram schematically showing the configuration of the OSD image storage area 11A.
In the OSD image storage area 11A, the left-eye OSD image data 10A and the right-eye OSD image data 10B constituting one OSD image data 12A are stored. The start address A of the area in which the OSD image data 10A is stored and the start address B of the area in which the OSD image data 10B is stored are determined in advance and stored in the nonvolatile storage unit 12, for example. The control unit 10 stores the OSD image data 12A read from the nonvolatile storage unit 12 in the OSD image storage area 11A according to the head addresses A and B. Therefore, when the OSD image data 10A for the left eye is necessary, the data may be read from the address A in the OSD image storage area 11A. Similarly, when the OSD image data 10B for the right eye is necessary, the data may be read from the address B in the OSD image storage area 11A.

In the main body of the projector 1, an operation panel 51 including various switches and indicator lamps for operation by a user is disposed. The operation panel 51 is connected to the input processing unit 13, and the input processing unit 13 appropriately turns on or blinks the indicator lamp of the operation panel 51 according to the operation state or setting state of the projector 1 according to the control of the control unit 10. . When the switch of the operation panel 51 is operated, an operation signal corresponding to the operated switch is output from the input processing unit 13 to the control unit 10.
The projector 1 also has a remote controller 5 that is used by the user. The remote controller 5 includes various buttons, and transmits an infrared signal corresponding to the operation of these buttons. The main body of the projector 1 is provided with a remote control light receiving unit 52 that receives an infrared signal emitted from the remote controller 5. The remote control light receiving unit 52 decodes the infrared signal received from the remote control 5, generates an operation signal indicating the operation content in the remote control 5, and outputs the operation signal to the control unit 10.

FIG. 3 is a functional block diagram illustrating the configuration of the display processing unit 15 in detail.
The display processing unit 15 is connected to an external image supply device (not shown). The display processing unit 15 generates display image data S <b> 8 based on the input image data S <b> 1 input from the image supply device under the control of the control unit 10, and outputs the display image data S <b> 8 to the light modulation device driving unit 17.
The display processing unit 15 includes an image output unit 21 (image output unit) that outputs output image data S2 based on the input image data S1, and an image buffer that temporarily stores the output image data S2 output by the image output unit 21. 23 (buffer), and an image processing unit 30 that performs processing for superimposing the OSD image data 10A and 10B on the output image data S2 stored in the image buffer 23. The display processing unit 15 also includes an OSD reading unit 25 that reads out OSD image data 10A and 10B from the RAM 11, and an OSD image buffer 27 that temporarily stores the OSD image data 10A and 10B read out by the OSD reading unit 25. A buffer control unit 29 that reads out the OSD image data 10A and 10B stored in the OSD image buffer 27 at an appropriate timing and outputs them to the image processing unit 30.

The image output unit 21 outputs the input image data S1 to the image buffer 23 as output image data S2 for each frame. In the present embodiment, it is assumed that the input image data S1 is stereoscopic image data in a frame sequential format. In this case, the left-eye image frame and the right-eye image frame are alternately input to the image output unit 21. The image output unit 21 sequentially outputs the input frames of the input image data S1 to the image buffer 23.
Further, the image output unit 21 generates a Vsync signal S3 and a left / right identification signal S4 according to a clock signal included together with the input image data S1, and outputs the generated signal to the image processing unit 30.

FIG. 4 is a timing chart showing the output states of the Vsync signal S3 and the left / right identification signal S4 processed by the projector 1.
FIG. 4A shows the Vsync signal S3. The Vsync signal S3 is a vertical synchronization signal for the input image data S1. FIG. 4B shows a left / right identification signal S4. The left / right identification signal S4 is a signal indicating whether each frame of the input image data S1 is a left-eye image or a right-eye image. For example, a frame output while the left / right identification signal S4 is High is an image for the left eye, and a frame output while the left / right identification signal S4 is Low is an image for the right eye. The left / right identification signal S4 is input to the display processing unit 15 together with the input image data S1 in synchronization with the Vsync signal S3. When outputting the output image data S2 to the image buffer 23, the image output unit 21 outputs a Vsync signal S3 and a left / right identification signal S4 in synchronization with each frame of the output image data S2.

The OSD reading unit 25 (FIG. 2) reads the OSD image data 10A and 10B stored in the OSD image storage area 11A of the RAM 11. As described above, in the OSD image storage area 11A, the control unit 10 sets the OSD image data 10A and 10B stored in the nonvolatile storage unit 12 (FIG. 1) as a target to be displayed on the screen SC. The designated OSD image data 10A and 10B are stored.
When the reading start address is designated by the buffer control unit 29, the OSD reading unit 25 reads data from the address designated in the OSD image storage area 11A and outputs it to the OSD image buffer 27. The OSD reading unit 25 reads either the OSD image data 10A or the OSD image data 10B in one reading operation. Data read by the OSD reading unit 25 is stored in the OSD image buffer 27.
In response to a request from the image processing unit 30, the buffer control unit 29 specifies the address specified by the image processing unit 30 as a reading start address for the OSD reading unit 25, and causes the reading to be executed. Then, the buffer control unit 29 reads out the OSD image data 10 </ b> A or the OSD image data 10 </ b> B read out by the OSD reading unit 25 and stored in the OSD image buffer 27, and outputs it to the image processing unit 30. When the buffer control unit 29 requests the OSD reading unit 25 to read once, either the OSD image data 10A or the OSD image data 10B is read to the OSD image buffer 27, and the buffer control unit 29 reads the OSD image data. Either the data 10 A or the OSD image data 10 B is acquired from the OSD image buffer 27 and output to the image processing unit 30.

  The image processing unit 30 combines the image data of the output image data S2 stored in the image buffer 23 and the OSD image data 10A and 10B input from the buffer control unit 29 to generate display image data S8. In the section 31 (compositing processing means), the address selection section 35 (reading control means) for designating the address of the reading start position when reading the OSD image data 10A, 10B from the OSD image storage area 11A, and the OSD image storage area 11A A register 36 storing an address where the left-eye OSD image data 10A is stored, and a register 37 storing an address where the right-eye OSD image data 10B is stored in the OSD image storage area 11A are provided.

  The address selection unit 35 determines whether the image data to be read next from the image buffer 23 is the image data of the left-eye image or the right-eye image in accordance with the left / right identification signal S4 output from the image output unit 21. Based on the result, either the register 36 or the register 37 is selected. Then, the address selection unit 35 acquires an address from the selected register, and outputs it to the synthesis processing unit 31 as a reading start address.

FIG. 5 is a diagram illustrating an example of an image displayed based on the display image data S8 output from the image processing unit 30. (A) illustrates an example of a frame for the left eye, and (B) illustrates an image for the right eye. An example of a frame is shown.
In the example shown in FIGS. 5A and 5B, the OSD image 105 is arranged in the left-eye frame 101, and the OSD image 106 is arranged in the right-eye frame 103. The OSD image data 10A corresponding to the OSD image 105 actually includes a margin around the OSD image 105, and is data having the same size as the frame 101 as a whole. Accordingly, the image data of the left-eye image and the OSD image data 10A are image data of the same size, and the OSD image 105 is arranged at a predetermined position of the frame 101 by superimposing them. Similarly, the OSD image data 10 </ b> B is data having the same size as the frame 103, including margins around the OSD image 106. In the present embodiment, the blank area of the OSD image data 10A and 10B may be transparent or opaque.

In the example of FIG. 5, the position of the OSD image 105 in the frame 101 and the position of the OSD image 105 in the frame 103 are different. This positional shift amount is the parallax between the left and right images. For this reason, if a person wearing a glasses-type polarization filter, for example, sees the projection image in which the frames 101 and 103 are projected on the screen SC, the OSD images 105 and 106 appear three-dimensionally according to the parallax. In addition, when no parallax is provided between the position of the OSD image 105 in the frame 101 and the position of the OSD image 106 in the frame 103, the OSD images 105 and 106 appear as planar images in the projection image projected on the screen SC.
As described above, the projector 1 can display the OSD images 105 and 106 as a planar image or a stereoscopic image when the input image data S1 is image data of a stereoscopic image.
The OSD image data 10A and 10B may be image data smaller than the frames 101 and 103. In this case, the position where the OSD image data 10A is superimposed on the image data of the frame 101 and the position where the OSD image data 10B is superimposed on the image data of the frame 103 may be set in advance. In this case, image data smaller than the frames 101 and 103 can be used as the OSD image data 10A and 10B.

  The composition processing unit 31 designates the address designated by the address selection unit 35 to the buffer control unit 29 and requests reading of the OSD image data 10A and 10B. When the OSD image data 10A or the OSD image data 10B is input from the buffer control unit 29, the image data for one frame of the output image data S2 is acquired from the image buffer 23. The composition processing unit 31 develops image data for one frame in a frame memory (not shown), and superimposes (superimposes) the images by drawing the OSD image data 10A or the OSD image data 10B on the image data. . Then, the synthesis processing unit 31 reads the image data of the synthesized image from the frame memory, and outputs it as display image data S8 to the light modulation device driving unit 17 (FIG. 1).

FIG. 6 is a flowchart showing the operation of the projector 1.
First, the image output unit 21 outputs the output image data S2 including the image data of the left-eye image and the image data of the right-eye image based on the input image data S1 under the control of the control unit 10 and outputs it to the image buffer 23. At the same time, the Vsync signal S3 and the left / right identification signal S4 are output to the address selector 35 (step ST1). Further, the control unit 10 reads the OSD image data 12A from the nonvolatile storage unit 12 and stores it in the RAM 11 (step ST2). The process of step ST12 may be executed before the input image data S1 is input.

Here, the address selection unit 35 determines whether the image data to be read next from the image buffer 23 is for the left eye or the right eye based on the Vsync signal S3 and the left / right identification signal S4 (step ST3).
When the image data to be read next from the image buffer 23 is for the left eye, the address selection unit 35 acquires an address from the left eye register 36 and designates this address as a read start address to the synthesis processing unit 31. (Step ST4). The compositing processing unit 31 requests the buffer control unit 29 to specify a reading start address, and requests the reading, and the OSD reading unit 25 reads the OSD image data 10A from the OSD image storage area 11A in response to this request (step ST5). ). When the OSD image data 10 </ b> A read by the OSD reading unit 25 is input to the synthesis processing unit 31 by the buffer control unit 29, the synthesis processing unit 31 superimposes the OSD image data 10 </ b> A on the image data acquired from the image buffer 23. Processing is performed, and the combined display image data S8 is output to the light modulator driving unit 17 (step ST6). Thereafter, the display unit 40 displays an image on the screen SC based on the display image data S8 (step ST7).

  On the other hand, when the image data to be read next from the image buffer 23 is for the right eye, the address selection unit 35 acquires an address from the register 37 for the right eye and uses this address as a reading start address for the synthesis processing unit 31. Designate (step ST8). The compositing processing unit 31 requests the buffer control unit 29 to specify a reading start address, and requests the reading, and in response to this request, the OSD reading unit 25 reads the OSD image data 10B from the OSD image storage area 11A (step ST9). ). When the OSD image data 10B read by the OSD reading unit 25 is input to the composition processing unit 31 by the buffer control unit 29, the composition processing unit 31 superimposes the OSD image data 10B on the image data acquired from the image buffer 23. Processing is performed, and the combined display image data S8 is output to the light modulator driving unit 17 (step ST10), and the process proceeds to step ST7.

As described above, the projector 1 according to the first embodiment to which the present invention is applied is a projector 1 that displays a stereoscopic image including a left-eye image and a right-eye image based on the input image data S1. An image output unit 21 that outputs image data of the left-eye image and image data of the right-eye image based on the image data S1, and OSD image data 10A and 10B that are image data different from the input image data S1 are stored. A display processing unit 15 that combines the OSD image data 10A or the OSD image data 10B stored in the OSD image storage region 11A with the OSD image storage region 11A, the image data output by the image output unit 21, and the display processing unit 15 Display unit 40 that displays an image based on the image data synthesized by the display data processing unit 15. Is the image data of the left-eye image, the address where the OSD image data 10A is stored in the OSD image storage area 11A is designated, and the acquired image data is the image data of the right-eye image. The address selection unit 35 that specifies the address where the OSD image data 10B is stored in the image storage area 11A, and the OSD image data 10A or the OSD image data 10B read from the address specified by the address selection unit 35, and the acquired image data And a synthesizing processing unit 31 that performs the synthesizing process.
Thus, the projector 1 combines the OSD image data 10A stored in the OSD image storage area 11A with the image data of the left eye image, and the OSD image data stored in the OSD image storage area 11A as the image data of the right eye. 10B is synthesized. In this processing, the address selection unit 35 specifies the address where the OSD image data 10A is stored when the synthesis processing unit 31 acquires the image data of the left-eye image from the image buffer 23, and sets the image data of the right-eye image. When acquiring, the address where the OSD image data 10B is stored is designated. Then, the composition processing unit 31 acquires and synthesizes another image data at the designated address by the buffer control unit 29. Thus, the OSD image data 10A and the OSD image data 10B are respectively synthesized with the image data of the left-eye image and the image data of the right-eye image based on the input image. The OSD image can be synthesized as a stereoscopic image and displayed effectively.
In the process of combining the OSD image data 10A and 10B, an appropriate read start address in the OSD image storage area 11A is designated depending on whether the image data of the input image is for the left eye or for the right eye. Therefore, it is possible to efficiently perform the process of acquiring and combining with the OSD image data 10A and 10B.

  The OSD image storage area 11A is provided in the volatile RAM 11, and includes a nonvolatile storage unit 12 that stores a plurality of OSD image data 12A including OSD image data 10A and OSD image data 10B. The OSD image data 12A to be displayed is read from the nonvolatile storage unit 12, the OSD image data 10A included in the read OSD image data 12A is stored at an address corresponding to the data for the left eye, and the OSD image data 10B is used for the right eye. Is stored at an address corresponding to the data. That is, the projector 1 can use a plurality of OSD image data 12A stored in the nonvolatile storage unit 12, and stores the OSD image data 12A to be used at a corresponding address in the OSD image storage area 11A. The OSD image data 12A can be combined with the input image data. For this reason, a unified name is assigned to the OSD image data 12A, and an address at which the OSD image data 10A and 10B of the OSD image data 12A to be used among the plurality of OSD image data 12A is stored is designated as needed. Thus, there is an advantage that complicated management becomes unnecessary and management of the OSD image data 12A becomes easy.

  Also, the image buffer 23 that temporarily stores the image data output by the image output unit 21 is provided, and the composition processing unit 31 performs processing for acquiring the image data from the image buffer 23 and compositing the OSD image data 10A and 10B. The address selection unit 35 determines whether the image data acquired by the synthesis processing unit 31 from the image buffer 23 is for the left eye or the right eye, and designates an address in the OSD image storage area 11A. Thus, for example, if it is determined whether the image data acquired from the image buffer 23 is for the left eye or the right eye based on the left / right identification signal S4, the OSD image data 10A and 10B corresponding to the acquired image data is converted into the OSD image. Data can be read from the storage area 11A.

  The image output unit 21 alternately outputs the image data of the left eye image and the image data of the right eye image, and whether the image data being output is the left eye image data or the right eye image data. And the address selection unit 35 determines whether the image data acquired from the image buffer 23 is image data of the left-eye image or right-eye image based on the left-right identification signal S4. Then, the address of the OSD image storage area 11A is designated. As a result, the OSD image data 10A or the OSD image data 10B is acquired from appropriate addresses for the image data of the left-eye image and the image data of the right-eye image that are alternately output and combined. Thereby, the process which synthesize | combines the OSD image data 10A and 10B corresponding to each of the data of the image for left eyes, and the image data of the image for right eyes can be performed rapidly.

[Second Embodiment]
FIG. 7 is a functional block diagram showing a configuration of a display processing unit 15A according to the second embodiment to which the present invention is applied.
In the second embodiment, a case where the input image data S1 input from an image supply device (not shown) is side-by-side stereoscopic image data will be described as an example. Note that the configuration of the second embodiment can be easily applied even when the input image data S1 is a top-and-bottom stereoscopic image.

A display processing unit 15A illustrated in FIG. 7 constitutes the projector 1 instead of the display processing unit 15 illustrated in FIG. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
The display processing unit 15A includes an image output unit 21A instead of the image output unit 21 (FIG. 2). The image output unit 21A divides each frame constituting the input image data S1 to generate left-eye frame image data and right-eye frame image data. In the side-by-side image, the right half of one frame is an image for the right eye, and the left half of one frame is an image for the left eye. In order to display a side-by-side image as a stereoscopic image, one frame is separated into a right half and a left half, and each separated image is expanded in the horizontal direction so that a right eye frame and a left eye frame are displayed. And need to generate.
The image output unit 21A outputs the left half frame obtained by separating the frames of the input image data S1 to the image buffer 22 as output image data S5. That is, the image buffer 22 is a left-eye buffer memory, and the image data of the left-eye frame extracted from the input image data S1 is sequentially stored in the image buffer 22. Further, the image output unit 21A outputs the right half frame obtained by separating the frame of the input image data S1 to the image buffer 24 as the output image data S6. That is, the image buffer 24 is a right-eye buffer memory, and the image data of the left-eye frame extracted from the input image data S1 is sequentially stored in the image buffer 24.

  Further, the image output unit 21A generates a Vsync signal S7 and outputs it to the image processing unit 30A. The Vsync signal S7 is a vertical synchronization signal generated by the image output unit 21A based on the vertical synchronization signal input together with the input image data S1. When the input image data S1 is image data in the side-by-side format, the number of frames is doubled because each frame is separated by the image output unit 21A. Therefore, the vertical synchronization frequency is doubled to display all the frames. To be. The image output unit 21A generates a Vsync signal S7 having a frequency twice the vertical synchronization frequency of the input image data S1, and outputs the Vsync signal S7 to the address selection unit 35 included in the image processing unit 30A.

  The image processing unit 30A is provided in place of the image processing unit 30 (FIG. 2). Similar to the image processing unit 30, the image processing unit 30 A includes the address selection unit 35 and the registers 36 and 37, and similarly to the synthesis processing unit 31, the image processing unit 30 A combines two OSD image data 10 A and 10 B with image data. Processing units 32 and 33 are provided. The composition processing unit 32 performs processing for compositing the OSD image data 10 </ b> A with the image data for the left eye stored in the image buffer 22. On the other hand, the composition processing unit 34 performs processing for compositing the OSD image data 10 </ b> B with the image data for the right eye stored in the image buffer 24.

  The address selection unit 35 designates a read start address for each of the synthesis processing units 32 and 34. That is, the address selection unit 35 reads the address where the OSD image data 10A to be combined with the left-eye frame is stored from the register 36, and designates it as the reading start address to the combination processing unit 32. Similarly, the address selection unit 35 reads the address where the OSD image data 10B to be combined with the frame for the right eye is stored from the register 37, and designates this address to the combination processing unit 34 as a read start address.

With this configuration, the display processing unit 15 </ b> A performs the following operation under the control of the control unit 10. First, the image output unit 21A generates output image data S5 that is image data of the left-eye frame and output image data S6 that is image data of the right-eye frame from the input image data S1. The output image data S5 is sequentially stored in the image buffer 22, and the output image data S6 is sequentially stored in the image buffer 24.
On the other hand, the address selection unit 35 designates the addresses read from the registers 36 and 37 to the synthesis processing units 32 and 34 as read start addresses, respectively. The synthesizing processing units 32 and 34 specify the reading start address specified by the address selection unit 35 to the buffer control unit 29 and request reading of OSD image data. The OSD reading unit 25 reads data from the address designated to the buffer control unit 29 and stores it in the OSD image buffer 27.

Here, since the synthesis processing units 32 and 34 cannot acquire data from the buffer control unit 29 at the same time, the synthesis processing units 32 and 34 alternately request the buffer control unit 29 to read. The OSD reading unit 25 sequentially executes reading from addresses requested to the buffer control unit 29. The buffer control unit 29 sequentially outputs the OSD image data 10 </ b> A or the OSD image data 10 </ b> B output from the OSD reading unit 25 to the OSD image buffer 27 to the synthesis processing units 32 and 34.
The composition processing unit 32 designates the address designated by the address selection unit 35, requests the buffer control unit 29 to read, and acquires the OSD image data 10A input in response to this request. The composition processing unit 34 designates the address designated by the address selection unit 35, requests the buffer control unit 29 to read, and acquires the OSD image data 10B input in response to this request.

The composition processing units 32 and 34 perform processing for converting the resolution of the image data acquired from the image buffers 22 and 24. That is, since the image data acquired from the image buffers 22 and 24 is obtained by halving the frame of the input image data S1, the resolution in the horizontal (horizontal) direction is halved. Therefore, the synthesis processing units 32 and 34 perform pixel interpolation or the like so that the horizontal resolution of the image data acquired from the image buffers 22 and 24 is doubled before being synthesized with the OSD image data 10A and 10B. Performs resolution conversion processing. By this processing, the image data acquired from the image buffers 22 and 24 is expanded in the horizontal direction to become image data having an original aspect ratio.
If the OSD image data 10A and 10B are image data prepared in accordance with the size of the enlarged image data, the OSD image data 10A, It is desirable to perform processing to synthesize 10B.

Then, the composition processing unit 32 performs processing for arranging the OSD image data 10A on the enlarged image data and compositing. Further, the composition processing unit 34 performs processing for arranging the OSD image data 10B on the enlarged image data and compositing.
The image data synthesized by the synthesis processing units 32 and 34 are alternately output from the synthesis processing units 32 and 34. Therefore, the image processing unit 30A alternately outputs the image data of the left eye frame and the image data of the right eye frame as display image data S8. Thereby, the projector 1 provided with the display processing unit 15A can superimpose the OSD image on the stereoscopic image and display it on the screen SC, similarly to the example described in the first embodiment.

As described above, according to the second embodiment to which the present invention is applied, when side-by-side format image data is input as the input image data S1, the projector 1 generates a frame for the left eye from the input image data S1. Image data and right-eye frame image data can be generated, and the OSD image data 10A and 10B read from the OSD image storage area 11A can be combined with each image data and displayed on the screen SC. Therefore, similarly to the first embodiment, the process of combining the OSD image data 10A and 10B can be quickly executed.
Further, in the configuration shown in FIG. 7, the image data of the left-eye frame is processed by the synthesis processing unit 32, and the image data of the right-eye frame is processed by the synthesis processing unit 34, so that the synthesis process is performed at a higher speed. It is possible. For this reason, even when a side-by-side image is input and processing for separating the frames of the input image data S1 or resolution conversion is required, display delay can be suppressed and the image can be smoothly displayed on the screen SC. In addition, since the input image data S1 can be processed at high speed, it is possible to cope with the case of performing double speed driving that doubles the vertical synchronization frequency, quadruple speed driving that increases the quadruple frequency, etc. Can be displayed.

[Third Embodiment]
FIG. 8 is a functional block diagram showing the configuration of the display processing unit 15B according to the third embodiment to which the present invention is applied.
In the third embodiment, a case in which input image data S1 input from an image supply device (not shown) is side-by-side stereoscopic image data will be described as an example. Note that the configuration of the third embodiment can be easily applied even when the input image data S1 is a top-and-bottom stereoscopic image.

A display processing unit 15B illustrated in FIG. 8 constitutes the projector 1 instead of the display processing unit 15 illustrated in FIG. In the third embodiment, the same components as those in the first and second embodiments are denoted by the same reference numerals and description thereof is omitted.
The display processing unit 15B includes an image output unit 21B instead of the image output unit 21 (FIG. 2). Similarly to the image output unit 21A (FIG. 7), the image output unit 21B divides each frame constituting the input image data S1, and obtains the image data of the left eye frame and the image data of the right eye frame. It has a function to generate. The image output unit 21B alternately outputs the left half frame obtained by separating the frame of the input image data S1 and the right half frame obtained by separation of the frame of the input image data S1 to the enlargement processing unit 26 as output image data S9. To do.

  Further, the image output unit 21B generates a Vsync signal S7 and outputs it to the image processing unit 30A. The Vsync signal S7 is a vertical synchronization signal generated by the image output unit 21A. In accordance with the separation of the side-by-side image data, the Vsync signal S7 has a vertical synchronization frequency twice that of the input image data S1. Yes. The image output unit 21B generates a Vsync signal S7, and the left and right identification signal S4 indicating whether the image data being output to the enlargement processing unit 26 is a left-eye frame or a right-eye frame, and the image processing unit 30. Output to.

The enlargement processing unit 26 performs a process of converting the resolution of the image data of each frame included in the output image data S9 output by the image output unit 21B. Since the image data output from the image output unit 21B is obtained by halving the frame of the input image data S1, the enlargement processing unit 26 interpolates the pixels so that the horizontal resolution of the image data is doubled. A process for converting the resolution is performed. The processed image data becomes image data having the same resolution as the input image data S1, and is output to the image buffer 23 as output image data S11.
The image buffer 23 temporarily stores the output image data S11 input from the enlargement processing unit 26.

  The image processing unit 30 has been described in the first embodiment. The image processing unit 30 includes a compositing processing unit 31, an address selection unit 35, and registers 36 and 37. The image processing unit 30 acquires the output image data S11 stored in the image buffer 23 for each frame, and obtains OSD image data 10A, Processing to superimpose 10B is performed and output to the light modulator driving unit 17 as display image data S8.

  As described above, according to the third embodiment to which the present invention is applied, when side-by-side image data is input as the input image data S1, the projector 1 generates a left-eye frame from the input image data S1. Image data and right-eye frame image data can be generated, and the OSD image data 10A and 10B stored in the OSD image storage area 11A can be combined with each image data and displayed on the screen SC. Therefore, similarly to the first embodiment, the process of combining the OSD image data 10A and 10B can be quickly executed.

  Further, in the configuration shown in FIG. 8, the enlargement processing unit 26 performs a process of enlarging the resolution on the left-eye frame and the right-eye frame generated based on the input image data S1. Therefore, the output image data S11 output by the enlargement processing unit 26 can be processed in the same manner as each frame of stereoscopic image data in the frame sequential format. Accordingly, the OSD image data 10A and 10B can be superimposed on the input image data S1 in the side-by-side format and displayed on the screen SC by using the image processing unit 30 having one composition processing unit 31.

[Fourth Embodiment]
FIG. 9 is a functional block diagram showing a configuration of a display processing unit 15C according to the fourth embodiment to which the present invention is applied.
In the fourth embodiment, a case where the input image data S1 input from an image supply device (not shown) is stereoscopic image data in a frame sequential format will be described as an example.

A display processing unit 15C illustrated in FIG. 9 constitutes the projector 1 instead of the display processing unit 15 illustrated in FIG. In the fourth embodiment, the same components as those in the first, second, and third embodiments described above are denoted by the same reference numerals and description thereof is omitted.
The display processing unit 15C includes the image output unit 21, the image buffer 23, the OSD reading unit 25, the OSD image buffer 27, and the buffer control unit 29 illustrated in FIG.
Further, the display processing unit 15C includes an image processing unit 30A. The image processing unit 30 </ b> A includes two synthesis processing units 32 and 34, an address selection unit 35, and registers 36 and 37.
In this embodiment, the composition processing units 32 and 34 acquire image data from the image buffer 23 for each frame. In the image buffer 23, the image data of the left-eye frame and the image data of the right-eye frame are alternately input from the image output unit 21 and stored. Since the composition processing unit 32 acquires the image data of the left eye frame from the image buffer 23, and the composition processing unit 34 acquires the image data of the right eye frame from the image buffer 23, the composition processing units 32 and 34 are alternately arranged. It can be said that image data is acquired.

  The synthesis processing units 32 and 34 acquire the OSD image data 10A and 10B by the buffer control unit 29, and combine the OSD image data 10A and 10B with the image data acquired from the image buffer 23. Since the image data synthesized by the synthesis processing unit 32 and the image data synthesized by the synthesis processing unit 34 are alternately output, the display image data S8 includes the left-eye frame image data and the right-eye frame. Are alternately output. Based on the display image data S8, the light modulation device driving unit 17 drives the light modulation device 42, so that the projector 1 superimposes the OSD image on the stereoscopic image as in the example described in the first embodiment. Can be displayed on the screen SC.

In the configuration shown in FIG. 9, the OSD image data 10A and 10B are synthesized by the two synthesis processing units 32 and 34 with respect to the input image data S1 which is stereoscopic image data in the frame sequential format. Therefore, the process of drawing / developing the image data in the frame memory and superimposing the image data on the OSD image data 10A, 10B is not a bottleneck.
Therefore, it is possible to synthesize the OSD image data 10A and 10B for all frames even when double speed driving, quadruple speed driving, or the like for increasing the vertical synchronization frequency is performed, and a higher quality image can be displayed on the screen SC. .

Furthermore, in the configuration shown in FIG. 9, it is possible to execute the operation described in the first embodiment using only one of the synthesis processing units 32 and 34. In this case, for example, the synthesis processing unit 32 performs a process of sequentially synthesizing the OSD image data 10A and 10B with the image data of all the frames stored in the image buffer 23, similarly to the synthesis processing unit 31 (FIG. 2). Do. In this case, the address selection unit 35 continuously outputs the reading start addresses of the OSD image data 10A and 10B to the synthesis processing unit 32 based on the information read from the registers 36 and 37.
Then, when it is necessary to execute the processing for combining the OSD image data 10A and 10B at a particularly high speed, such as when the projector 1 performs double speed driving or quadruple speed driving, both the combining processing units 32 and 34 are used. Can do. In this case, as described above, the process of combining the OSD image data 10A with the image data of the left-eye frame and the process of combining the OSD image data 10B with the image data of the right-eye frame are separated from each other. 32, 34 can be processed.

  Furthermore, the operation mode for combining the OSD image data 10A and 10B using only one of the combination processing units 32 and 34, and the operation for combining the OSD image data 10A and 10B using both the combination processing units 32 and 34. It is good also as a structure which switches a mode by control of the control part 10. FIG. In this case, the control unit 10 operates according to whether or not the process of combining the OSD image data 10A and 10B needs to be executed at a particularly high speed, such as when the projector 1 performs double speed driving or quadruple speed driving. May be switched. Further, the control unit 10 determines whether or not the processing load for combining the OSD image data 10A and 10B is high depending on the size of the OSD image data 10A and 10B and the resolution of the input image data S1, and according to the determination result. The operation mode may be switched.

Each of the above-described embodiments is merely an example of a specific mode to which the present invention is applied, and does not limit the present invention. The present invention can also be applied as a mode different from each of the above-described embodiments. is there. In each of the above embodiments, the light modulation device 42 included in the display unit 40 includes three transmission type or reflection type light modulation devices 42 corresponding to each color of RGB as modulation means for modulating light emitted from the light source. The configuration used is described as an example, but the present invention is not limited to this. For example, a method using a combination of one liquid crystal panel and a color wheel, and three digital mirror devices (DMD) are used. Alternatively, a DMD method combining a single digital mirror device and a color wheel may be used. Here, when only one liquid crystal panel or DMD is used as the modulation means, a member corresponding to a synthetic optical system such as a cross dichroic prism is unnecessary. In addition to the liquid crystal panel and the DMD, any configuration that can modulate the light emitted from the light source can be used without any problem.
In each of the above embodiments, the case where the input image data S1 is a frame sequential or side-by-side stereoscopic image has been described as an example, but the present invention is not limited to this. For example, the present invention can also be applied when stereoscopic image data in a line alternative format, a top-and-bottom format, or the like is input as the input image data S1.

  The display device of the present invention is not limited to a projector that projects an image on the screen SC, and the image / video is displayed on a liquid crystal monitor or a liquid crystal television that displays an image / video on a liquid crystal display panel, or a plasma display panel (PDP). Self-luminous such as a monitor device or a television receiver for displaying an image / video on an organic EL display panel called a monitor device or a television receiver, an OLED (Organic light-emitting diode), an OEL (Organic Electro-Luminescence), etc. Various display devices such as a type display device are also included in the image display device of the present invention. In this case, a liquid crystal display panel, a plasma display panel, and an organic EL display panel correspond to the display means.

  In addition, each functional unit of the projector 1 illustrated in each of FIGS. 1, 2, and 7 to 9 indicates a functional configuration of the projector 1, and a specific mounting form is not particularly limited. That is, it is not always necessary to mount hardware corresponding to each function unit individually, and it is of course possible to adopt a configuration in which the functions of a plurality of function units are realized by one processor executing a program. In addition, in the above embodiment, a part of the function realized by software may be realized by hardware, or a part of the function realized by hardware may be realized by software. In addition, the specific detailed configuration of the projector 1 can be arbitrarily changed without departing from the gist of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Projector (display apparatus), 10 ... Control part (separate image management means), 10A, 10B ... OSD image data (separate image data), 11 ... RAM, 11A ... OSD image storage area (memory), 12 ... Non-volatile Storage unit (non-volatile memory), 15, 15A to 15C ... display processing unit (image processing unit), 21, 21A, 21B ... image output unit (image output unit), 22, 23, 24 ... image buffer (buffer), 25 ... OSD reading unit, 26 ... enlargement processing unit, 27 ... OSD image buffer, 29 ... buffer control unit, 30, 30A ... image processing unit (image processing unit), 31, 32, 34 ... synthesis processing unit (compositing processing unit) , 35... Address selection section (reading control means), 36, 37... Register, 40... Display section (display means), 41. Shako science-based, SC ... screen.

Claims (6)

A display device that displays a stereoscopic image including a left-eye image and a right-eye image based on input image data,
Image output means for outputting the image data of the left-eye image and the image data of the right-eye image based on the input image data;
A memory storing different image data for the left eye, which is image data different from the input image data, and different image data for the right eye;
Image processing means for combining the separate image data for the left eye or the separate image data for the right eye stored in the memory with the image data output by the image output means;
Display means for displaying an image based on the image data synthesized by the image processing means,
The image processing means includes
When the acquired image data is the image data of the image for the left eye, the address where the separate image data for the left eye is stored in the memory is specified, and the acquired image data is the image data of the image for the right eye A read control means for designating an address at which the separate image data for the right eye is stored in the memory;
Synthesis processing means for performing processing for reading out the separate image data from the address designated by the readout control means and synthesizing it with the acquired image data;
A display device. The display device according to claim 1,
The memory is composed of volatile memory,
A non-volatile memory storing a plurality of the different image data each including the separate image data for the left eye and the separate image data for the right eye;
Reading the separate image data to be displayed from the non-volatile memory, storing the separate image data for the left eye included in the read separate image data at an address corresponding to the data for the left eye in the memory, Different image management means for storing the different image data for the right eye contained in the read different image data at an address corresponding to the data for the right eye in the memory;
A display device comprising: The display device according to claim 1, wherein
A buffer for temporarily storing the image data output by the image output means;
The image processing means performs processing for acquiring image data from the buffer and synthesizing the different image data,
The read control means determines whether the image data acquired from the buffer is image data of a left-eye image or right-eye image and designates an address of the memory;
A display device. The display device according to claim 3,
The image output means alternately outputs image data of the left eye image and image data of the right eye image, and indicates whether the image data being output is data of the left eye image or right eye image. Output identification signal,
The reading control unit determines whether the image data acquired from the buffer is image data of a left-eye image or right-eye image based on the identification signal, and designates an address of the memory. Display device. The display device according to claim 4,
The image output means generates and alternately outputs image data for the left eye image and image data for the right eye image based on the image data of the stereoscopic image in the frame sequential format, the line alternative format, or the side-by-side format, A display device that generates and outputs an identification signal indicating whether the image data is left-eye image data or right-eye image data. A control method for a display device that displays a stereoscopic image including a left-eye image and a right-eye image based on input image data,
Based on the input image data, output the image data of the image for the left eye and the image data of the image for the right eye,
Get the output image data,
When the acquired image data is the image data of the image for the left eye, the address where the image data for the left eye is stored in the memory in which the image data different from the input image data is stored When the acquired image data is the image data of the right eye image, the address at which the separate image data for the right eye is stored in the memory is specified.
Read another image data from the specified address and combine it with the acquired image data.
Displaying an image based on the processed left-eye image data and right-eye image data;
A control method of a display device characterized by the above.

Images