JP2003066364A - Head mounted display device and head mounted display system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an HMD (head mounted display) device which supports the rotation of a two-dimensional display element, notifies a connection device of a screen state of the two-dimensional display element to perform display corresponding to a screen, fast accesses a memory and can switch vertical and horizontal screens from an application. SOLUTION: This HMD device having an optical part 802 for projecting an image of the two-dimensional display element 801 to both eyes of a user, is provided with a rotation supporting means for the two-dimensional display element, a stopper means, and a drive controlling part 811 for controlling a drive signal and display data in accordance with a rotation state. The drive controlling part 811 performs address conversion in order to use the same row address to access the memory 812. The connection device 820 acquires the screen state of the two-dimensional display element with a communication controlling part 822 and issues a screen switching command to the HMD device with an API (application program interface).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head mounted display (hereinafter referred to as HMD) device which is used by being mounted on a user's head, face, etc., and its HMD device, video display device, and information processing device. The present invention relates to an HMD system connected to a connection device such as.

[0002]

2. Description of the Related Art Conventionally, a liquid crystal display element or the like has been used as a display device which is used by being mounted on a user's head or face.
An HMD device is known in which a virtual image is formed by an optical system from an image displayed on a three-dimensional display element and a user can see the formed virtual image.

In such an HMD device, a device in which the display screen can be switched between the vertical and horizontal directions is disclosed in, for example, Japanese Patent Laid-Open No. 6-
It is disclosed in Japanese Patent No. 70265. The HMD device disclosed in this publication will be described below with reference to FIGS. 1 (A), 1 (B), 2 (A), 2 (B), 3 (C) and 3 (D). It demonstrates using. FIG. 1A and FIG.
FIG. 2B is a schematic view of a user wearing a conventional HMD device as viewed from above, and FIGS. 2A and 2B respectively show a conventional HMD device as a user. 3A and 3B are schematic views of the mounted state when viewed from the side, and FIGS. 3A and 3B respectively show the state of the display screen of the two-dimensional display element in the conventional HMD device. Further, FIGS. 1A, 2A and 3A respectively show cases where the two-dimensional display element is a horizontal screen display,
FIG. 1B, FIG. 2B, and FIG. 3B each show a case where the two-dimensional display element is a vertical screen display.

This HMD device includes two two-dimensional display elements 104 and 104 and two concave mirrors 103 and 10.
3 and two half mirrors 102 and 102, and is mounted on the head, face, etc. of the user.

Each two-dimensional display element 104 is composed of a liquid crystal display element or the like, and an image or image is displayed on each screen. Light from the left two-dimensional display element 104 is reflected by the left half mirror 102 toward the left concave mirror 103. The concave mirror 103 is for showing a virtual image to the user, and the magnified image from the left concave mirror 103 is guided to the left eyeball 101 through the left half mirror 102. Similarly, light from the right two-dimensional display element 104 is emitted from the right half mirror 102.
Is reflected toward the right concave mirror 103, and an enlarged image from the right concave mirror 103 is reflected by the right half mirror 10.
It is guided to the eyeball 101 on the right side through 2.

The two-dimensional display element 104 and the half mirror 102 can rotate integrally.
As shown in FIGS. 1 (A) and 2 (A), a state in which the two-dimensional display element 104 is arranged on the side surface side of the user's face, and as shown in FIGS. 1 (B) and 2 (B). Then, the two-dimensional display element 104 is placed above the user's face. When the two-dimensional display element is arranged on the side surface side of the user's face, the half mirror 102 is arranged so that the light from the two-dimensional display element 104 at this position is reflected by the concave mirror 103. In this case, the image is displayed so that a horizontally long screen as shown in FIG. Further, when the two-dimensional display element is arranged above the user's face, the half mirror 102 is placed at this position.
It is arranged so that the light from the three-dimensional display element 104 is reflected by the concave mirror 103. In this case, the image is displayed so that a vertically long screen as shown in FIG.

Instead of integrally rotating the two-dimensional display element 104 and the half mirror 102, only the two-dimensional display element 104 may be rotated, or the two-dimensional display element 104 and the half mirror 102 may be rotated. It is also possible to place an image rotator in between to optically rotate the image or image.

FIG. 4 is a block diagram showing the configuration of an HMD system using the above HMD device. This HMD system includes a display device 400 and a control unit 4
HMD device with 10 and VCR (video cassette
A connection device 420 such as a recorder) is connected.

The connection device 420 is a VCR (video cassette recorder) or the like, and a video signal is output from the display control section 421 and input to the control unit 410.

In the control unit 410, when a video signal is input from the connection device 420, the drive control unit 41
The data is converted into display data and a drive signal which can be displayed by the two-dimensional display element by 1, and is supplied to the two-dimensional display element 401. The signal conversion processing by the drive control unit 411 is performed using the memory 412. At this time, when field sequential driving is performed, signals corresponding to the respective colors of RGB are output in a time division manner.

For example, an analog signal input from a video device as a Video signal or S-Video signal is converted into digital data (RGB or YCrCb) by an LSI such as an NTSC decoder. Normal,
24 bits per pixel for RGB, 1 pixel for YCrCb
Converted to 6 bits. The converted data is temporarily stored in the memory 412, and the drive signal and the data RGB read from the memory 412 are output to the two-dimensional display element 401 in synchronization with the drive timing of the two-dimensional display element (for example, a liquid crystal display element). It When YCrCb data is stored in the memory 412, it is converted into RGB data by the drive control unit. When the field sequential drive is performed, the drive is performed at a frequency about three times as high as the drive timing, and each of the RGB colors is separately displayed in the two-dimensional display device 4.
It is output to 01.

The memory 412 may be built in the LSI constituting the drive control unit 411,
Further, the control unit 410 may be integrated with the display device 400.

The display device 400 comprises a two-dimensional display element 401 composed of a liquid crystal display element and the like, and an optical section 402 having the above-mentioned half mirror, concave mirror and the like.
Light from the three-dimensional display element 401 is projected onto both eyes of the user via the optical unit 402. This optical part 4
02 may be composed of several spherical lenses, aspherical lenses, and the like. Further, when the two-dimensional display element 401 is composed of a liquid crystal display element or the like that does not spontaneously emit light, the light source unit 403 irradiates the two-dimensional display element 401 with light.

In the display device 400, when the display data and the drive signal are input from the drive control unit 411, the light source unit 4
Upon receiving the light from 03, the two-dimensional display element 401 forms a two-dimensional image, and the light from the two-dimensional display element 401 is guided to both eyes of the user via the optical unit 402.

[0015]

However, the above-mentioned HMD device can switch the horizontal screen and the vertical screen of the two-dimensional display element, but has the following problems.

When the two-dimensional display element 104 is rotated,
Since there is no member that controls the rotation of the two-dimensional display element 104 to perform positioning, the two-dimensional display element 104 is not reliably fixed and the two-dimensional display element 104 is unstable.

Further, on the side of the connection device 420 connected to the HMD device, it is not known whether the state of the screen of the two-dimensional display element 104 is a horizontal screen or a vertical screen.

Further, if only the two-dimensional display element 104 is rotated or only the two-dimensional display element 104 is rotated together with the optical system, it is possible to perform the operation shown in FIGS. 10A-1 and 10A.
-2), the horizontal screen can be changed to the vertical screen, but the originally intended vertically long image as shown in FIG. 10B-2 cannot be obtained.

When the display data of the vertical screen or the horizontal screen is input from the connected device to the control unit and the drive control unit converts the display data into the display data and the drive signal which can be displayed by the two-dimensional display element, the Row address and the Col
When a memory that can be accessed using the um address is used, in the vertical screen display, the same line is different for input (when writing) data and output (when reading) data. Therefore, for example, when data is written by high-speed access using the same ROW address at the time of input and an attempt is made to output a signal in accordance with the rotation of the two-dimensional display element, the data can be read using the same ROW address. become unable.

Furthermore, the two-dimensional display element cannot be switched to the horizontal screen or the vertical screen from the application used in the connected device.

The present invention has been made in order to solve the problems of the prior art as described above, and can stably support the two-dimensional display element when it is rotated, and The state can be notified to the connected device connected to the HMD device, an image can be displayed according to the screen state when the two-dimensional display element is rotated, and the drive control unit can display the display data and the drive signal. A head-mounted data device and a head-mounted display system that enable high-speed access to a memory when performing conversion processing and that can switch a two-dimensional display element to a horizontal screen or a vertical screen from an application used in a connected device. The purpose is to provide.

[0022]

A head mounted display device according to the present invention is used by being mounted on a user's head or face, and a video or image is displayed in the vertical pixel number (resolution, dot number) and horizontal direction. Two two-dimensional display elements that are displayed on the screen having different numbers of pixels (resolution and number of dots) in the same direction, and the image displayed on one of the two-dimensional display elements is projected on one eye of the user, and the other An optical system means for projecting an image displayed on the two-dimensional display element on the other eye of the user;
Rotation supporting means for supporting and rotating the two-dimensional display element, stopper means for controlling the rotational position of the two-dimensional display element, and the two-dimensional display element are supplied in accordance with the rotation state of the two-dimensional display element. A drive control means for controlling a drive signal and display data, and an image displayed on the two-dimensional display element is displayed according to whether the two-dimensional display element is a horizontal screen display or a vertical screen display. It is possible to switch between a horizontally long image and a vertically long image, and thereby the above object is achieved.

According to the above construction, when the two-dimensional display element is switched to the horizontal screen or the vertical screen, the two-dimensional display element can be stably held by the rotation supporting means and the stopper means. Further, the display image can be switched by the drive control means according to the screen state of the two-dimensional display element, and an image display suitable for a vertical screen or a horizontal screen can be obtained.

The rotation supporting means may electrically control the rotation of the two-dimensional display element.

According to the above configuration, the switching between the horizontal screen and the vertical screen of the two-dimensional display element can be electrically controlled.

The stopper means preferably comprises means for positioning the two-dimensional display element and adjusting rattling.

According to the above structure, the two-dimensional display element can be stably held by performing positioning and rattling during rotation of the two-dimensional display element.

The drive control means is connected to a memory element which is accessed by using a Row address and a Column address, and when display data is input to the drive control means, the drive control means is used to perform the above-mentioned operation. A drive signal and display data to be supplied to the two-dimensional display element are generated, and the display data is displayed in the drive control means in both cases of the horizontal screen display and the vertical screen display. It is preferable that the address conversion is performed by the drive control means so that the same Row address is used to access the memory element when is input.

According to the above construction, the same R is stored in the memory regardless of whether the two-dimensional display element is a horizontal screen or a vertical screen.
High-speed access can be performed using the ow address.

The head mounted display system of the present invention comprises the head mounted display device of the present invention,
A head-mounted display system having a connection device connected to the head-mounted display device, wherein the head-mounted display device and the connection device have a horizontally long image displayed on the two-dimensional display element. , Or a communication means for communicating whether the image is a vertically long image, and the connected device is configured to display the two-dimensional display element according to whether the two-dimensional display element is a horizontal screen display or a vertical screen display. The display control means for controlling the supplied drive signal and display data is provided, thereby achieving the above object.

According to the above configuration, the information indicating whether the two-dimensional display element is in the horizontal screen display or the vertical screen display is displayed in the HMD.
It is possible to communicate between the device and the connected device, and both can support switching of screen states. In this configuration,
The connected device outputs the display data converted according to whether the two-dimensional display element is in the vertical screen display or the horizontal screen display, and the control unit does not perform the vertical / horizontal conversion process.

The display control means is connected to a memory element that is accessed using a Row address and a Column address, and the memory element is used to connect to the memory cell.
A drive signal and display data supplied to the three-dimensional display element are generated, and the same Row is generated for the memory element in both cases of the horizontal screen display and the vertical screen display of the two-dimensional display element. It is preferable to perform address conversion by the display control means so that access is performed using an address.

According to the above configuration, regardless of whether the two-dimensional display element is in the horizontal screen display or in the vertical screen display, high speed access can be performed to the memory by using the same Row address. . In this configuration,
The memory element is provided on the connection device side.

For registering in advance which of the horizontal screen display and the vertical screen display of the two-dimensional display element is to be used for the application used in the connection device, the user can set. The connected device has at least one of the setting means, and when the user uses the application, the connected device sets the two-dimensional display element to the head mounted display device according to the registered content or the set content. The head mounted display device is provided with a command issuing means for issuing a command for switching to a horizontal screen display or a vertical screen display.
A command receiving means for receiving a command from the connected device, a switching means for switching the two-dimensional display element to a horizontal screen display or a vertical screen display according to the command, and a notifying means for notifying a state after the screen switching are provided. Is preferred.

According to the above configuration, when the application set by the user or the application registered at the time of shipment is started, it is possible to automatically switch to the horizontal screen display or the vertical screen display.

The connected device acquires the current display screen of the two-dimensional display element and issues a command to the head mounted display device to switch the two-dimensional display element to a horizontal screen display or a vertical screen display. It has an application program interface that enables you to switch screens when you need to switch between screens.
It is preferable that a command is issued from the application program interface to the head mounted display device, and the two-dimensional display element is switched to a horizontal screen display or a vertical screen display according to the command.

According to the above configuration, it is possible to switch between the horizontal screen display and the vertical screen display in the application.

The head mounted display system of the present invention comprises the head mounted display device of the present invention,
A head-mounted display system having a connection device connected to the head-mounted display device, which is either a horizontal screen display or a vertical screen display of the two-dimensional display element for an application used in the connection device. Has at least one of a registration means for registering in advance and a setting means for the user to set, and the connected device is the head mounted display when the user uses an application. The device is provided with a command issuing means for issuing a command for switching the two-dimensional display element to a horizontal screen display or a vertical screen display according to the registered content or the set content. A command receiving means for receiving a command from the device, and a response to the command. And switching means for switching the two-dimensional display device in the horizontal screen or portrait display Te, and a notifying means for notifying the state after the screen switching, the object is achieved.

According to the above configuration, when the application set by the user or the application registered at the time of shipment is started, it is possible to automatically switch to the horizontal screen display or the vertical screen display.

The head mounted display system of the present invention comprises the head mounted display device of the present invention,
A head-mounted display system having a connection device connected to the head-mounted display device, the connection device acquiring a current display screen of the two-dimensional display element, and And an application program interface for issuing a command for switching the two-dimensional display element to a horizontal screen display or a vertical screen display, and when the screen needs to be switched in the application, the head mounted display device is A command is issued from the application program interface, and the two-dimensional display element is switched to a horizontal screen display or a vertical screen display according to the command, whereby the above object is achieved.

According to the above configuration, it is possible to switch between the horizontal screen display and the vertical screen display in the application.

[0042]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

5 (A) and 5 (B) are schematic views of the user wearing the HMD device according to one embodiment of the present invention, respectively, and FIG. 6 (A). 6 and FIG. 6B are schematic views of the user wearing the HMD device according to the embodiment of the present invention, respectively. FIG. 7A and FIG. Each shows the state of the display screen of a two-dimensional display element in the HMD device which is one embodiment of the present invention. Also, FIG.
(A), FIG. 6 (A), and FIG. 7 (A) respectively show 2
FIG. 5 shows a case where the three-dimensional display element is a horizontal screen display.
(B), FIG. 6 (B) and FIG. 7 (B) respectively show 2
The case where the dimensional display element is a vertical screen display is shown.

This HMD device includes two two-dimensional display elements 504 and 504 and two concave mirrors 503 and 50.
3 and 2 half mirrors 502 and 502, 2 each
It has a rotation control mechanism for the three-dimensional display element and stoppers 505 and 505, and is mounted on the head, face, etc. of the user.

The two-dimensional display element 504 is composed of a liquid crystal display element or the like, and an image or an image is displayed on each screen. The light from the left two-dimensional display element 504 is reflected by the left half mirror 502 toward the left concave mirror 503. The concave mirror 503 is for showing a virtual image to the user, and an enlarged image from the left concave mirror 503 is guided to the left eyeball 501 through the left half mirror 502. Similarly, the two-dimensional display element 50 on the right side
The light from No. 4 is reflected by the right half mirror 502 toward the right concave mirror 503, and the right concave mirror 503 is reflected.
The magnified image from 3 passes through the right half mirror 502 and is guided to the right eyeball 501.

The two-dimensional display element 504 is rotatable, and its rotation is controlled by the rotation control mechanism of the display element and the stopper 505. In the case of the horizontal screen display, as shown in FIGS. 5A and 6A, the two-dimensional display element 104 is arranged on the horizontal screen on the side surface side of the user's face, whereby the two-dimensional display element 104 shown in FIG. A horizontally long screen as shown in A) is observed. In the case of the vertical screen display, as shown in FIG.
As shown in FIG. 6B and FIG. 6B, the two-dimensional display element 104 includes a rotation control mechanism for the display element and the stopper 5.
It is rotated while being held on the side of the user's face by 05 and arranged on the vertical screen.
A vertically long screen as shown in (B) is observed.

FIG. 8 is a block diagram showing the configuration of an HMD system using the above HMD device. This HMD system includes a display device 800 and a control unit 8
The HMD device having 10 and the connection device 820 are connected.

The connection device 820 is a device such as a VCR or a PC (personal computer), and a video signal is output from the display control section 821 and input to the control unit 810. In addition, the communication control unit of the connection device 820 communicates with the control unit 810, information such as whether the two-dimensional display element 801 is in the horizontal screen display or the vertical screen display, a command, and the like. Control communication.

In the control unit 810, when the video signal is input from the connection device 820, the drive control section 81.
The data is converted into display data and a drive signal that can be displayed by the two-dimensional display element 1 and is supplied to the two-dimensional display element 801.

Further, the drive control / memory conversion unit 811 is
When the two-dimensional display element 801 communicates information such as vertical screen display or horizontal screen display, a command, and the like with the connection device 820, communication control is performed. The signal conversion processing by the drive control / memory conversion unit 811 is performed using the memory 812. At this time, when field sequential driving is performed, signals corresponding to the respective colors of RGB are output in a time division manner.

Furthermore, in this embodiment, the two-dimensional display element 801 is set to the horizontal screen display or the vertical screen display by the drive control / memory conversion unit 811.
Display data and drive signals for the dimensional display element 801 are converted and output to the two-dimensional display element 801. At this time, the drive control / memory conversion unit 811, as shown on the left side of FIG. 10C, when the display data corresponding to the vertical screen display and the horizontal screen display is input from the connected device, respectively.
It is possible to convert the output data according to the vertical screen display and the horizontal screen display as shown on the right side of FIG. However,
When this conversion process is performed on the connected device side, the drive control / memory conversion unit 811 does not perform this conversion process.

The memory 812 may be built in the LSI forming the drive control / memory conversion section 811, and the control unit 810 is integrated with the display device 800. Good.

The display device 800 is provided with a two-dimensional display element 801 composed of a liquid crystal display element and the like, and an optical section 802 having the above-mentioned half mirror, concave mirror and the like.
Light from the three-dimensional display element 801 is projected on both eyes of the user via the optical unit 802. This optical section 8
02 may be composed of several spherical lenses, aspherical lenses, and the like. Further, when the two-dimensional display element 801 is composed of a liquid crystal display element or the like that does not emit light spontaneously, the light source unit 803 irradiates the two-dimensional display element 801 with light.

In the display device 800, when the display data and the drive signal are input from the drive control / memory conversion section 811, the light from the light source section 803 is received and the two-dimensional display element 8 is received.
A two-dimensional image is formed by 01 and the two-dimensional display element 8
Light from 01 is guided to the user through the optical unit 802 to both eyes.

Further, the display device 800 is provided with a rotation control mechanism for the display element and a stopper 505, which controls the rotation and positioning of the two-dimensional display element 801.

The rotation control mechanism of the display element and the stopper 505 will be described below with reference to FIGS.
An explanation will be given using (B). FIG. 9A shows a case where the two-dimensional display element 504 is in the horizontal screen display state, and FIG.
Shows the case where the two-dimensional display element 504 is in the vertical screen display state.

The rotating portion 901 is a portion that supports the two-dimensional display element 504, is fixed around the two-dimensional display element 504, and has a circular outer periphery. For example, in the case of a transmissive display element, a hole for embedding a centered two-dimensional display element is made in a circular rotating part, and the two-dimensional display element is embedded and attached to the hole. You can Further, in the case of a reflective display element, a two-dimensional display element can be attached to the circular rotating part with the center aligned. By rotating this rotating unit 901,
The two-dimensional display element 504 rotates.

The rotation support portion 902 is a portion that supports the rotation of the rotation portion 901 and controls the rotation, and the ring-shaped inner peripheral portion is arranged at a predetermined distance from the rotation portion 901. The rotation support portion 902 includes the following stopper and movable stopper.

The stoppers 903 and 904 are fixed to the rotation support portion 902, and the rotation portion 901 is the stopper 90.
It does not rotate beyond 3 and 904,
This controls the rotational position of the rotating unit 901.

As shown in FIG. 9A, the movable stopper 905 is a stopper for positioning and adjusting rattling when the two-dimensional display element 504 is in the horizontal screen display state. The movable stopper 906 is shown in FIG.
As shown in (B), it is a stopper for positioning and adjusting the rattling when the two-dimensional display element 504 is in the horizontal screen display state. Also, the stopper 908 of the rotating part
Is for positioning the two-dimensional display element during rotation, and is fixed to the rotating unit 901.

The rotation control motor / stopper control circuit portion 917 electrically controls rotation and stopper control of these stoppers, movable stoppers and rotating portions.

The rotation control mechanism of the display element and the stopper 505 operate as follows. First, FIG.
When switching from the horizontal screen display state shown in FIG. 9A to the vertical screen state shown in FIG. 9B, the movable stopper 905 is set in the released state as shown in FIG.
Rotate 01. Then, when the stopper 908 of the rotating portion 901 hits the stopper 904, the movable stopper 906 is locked as shown in FIG. 9B.
The two-dimensional display element 504 is fixed in the vertical screen state.

When the movable stopper 906 changes to the locked state, the rotation control motor / stopper control circuit section 9
07 notifies the control unit 810 that the display has been switched to the vertical screen display by the vertical / horizontal state signal.

10 (A-1) and 10 (A-2)
As shown in, the desired vertical image cannot be obtained only by rotating the two-dimensional display element from the horizontal screen to the vertical screen.
When the control unit 810 is notified that the display has been switched to the vertical screen display state, as shown in FIG. 10B-1, the drive control / memory conversion unit 811 causes the drive signal and the display data to be displayed in accordance with the vertical screen display. Is converted and output to the display device 800. As a result, FIG.
As shown in 2), the two-dimensional display element displays a vertically long image corresponding to the vertical screen.

At this time, it is possible to notify the connected device 820 of a change in the vertical / horizontal state. In this case, the display control unit 821 of the connected device 820 drives the drive signal in accordance with the state of the display screen. It is also possible to convert and output the display data.

When switching from the vertical screen display state shown in FIG. 9B to the horizontal screen state shown in FIG. 9A, the movable stopper 906 is released as shown in FIG. 9A. Then, the rotating unit 901 is rotated. And
When the stopper 908 of the rotating unit 901 hits the stopper 903, the movable stopper 9 is moved as shown in FIG. 9 (A).
05 is locked and the two-dimensional display element 504 is fixed in the horizontal screen state.

When the movable stopper 905 changes to the locked state, the rotation control motor / stopper control circuit section 9
07 notifies the control unit 810 that the display has been switched to the horizontal screen display by the vertical / horizontal state signal.

When the control unit 810 is notified that the display has been switched to the horizontal screen display state, the drive control / memory conversion unit 811 converts the drive signal and the display data in accordance with the horizontal screen display and outputs it to the display device 800. To do. As a result, a horizontally long image corresponding to the horizontal screen is displayed on the two-dimensional display element.

At this time, it is also possible to notify the connected device 820 of a change in the vertical / horizontal state. In this case, the display control unit 821 of the connected device 820 drives the drive signal in accordance with the state of the display screen. It is also possible to convert and output the display data.

The rotation of the rotating unit 901 and the operation of the movable stoppers 905 and 906 can be performed manually, and a vertical / horizontal switching signal is input to the rotation control motor / stopper control circuit unit 907 for electrical operation. It is also possible to control. This vertical / horizontal switching signal may be supplied from the control unit 810, or a command may be output from the connected device to control unit 8.
A vertical / horizontal switching signal may be supplied via 10. Further, as shown in FIGS. 9 (A) and 9 (B), by making the stopper and the movable stopper thinner and arranging them in a staggered manner, the alignment at the time of rotation and the prevention of rattling can be prevented. And can be done easily.

A cylinder cam as shown in FIG. 11 may be used as the rotation control mechanism and stopper of such a two-dimensional display element. In the example shown in FIG. 11, the cylindrical cam 1101 on which the two-dimensional display element is arranged operates in the B direction, and the fixing portion 1102 causes the cylindrical cam 1101 to scribe 11
When it is locked by entering 03, a horizontal screen display is obtained, and from that state, the tubular cam 1101 operates in the direction A to rotate and the fixing portion 1102 enters the marking 1104 of the tubular cam 1101. If it is locked by the lock, a vertical screen display can be obtained. Also in this case, the fixing part which is the joint part and the tip of the scribe are made thin,
Positioning at the time of rotation and prevention of rattling can be easily performed.

In this HMD system, the two-dimensional display element is simply rotated to switch from the horizontal screen to the vertical screen, and the drive control / memory conversion unit 811 causes the screen shown in FIG.
When the output data as shown in the display image of -1) is supplied to the two-dimensional display element 801, the output data of FIG.
As shown in, although the two-dimensional display element has a vertical screen, an intended vertical image cannot be obtained. For this reason,
As shown in FIG. 10 (B-2), the output data as shown in the display image of FIG. 10 (B-1) is output by the drive control / memory conversion unit 811 so that a normal display state can be obtained on the vertical screen. It has to be processed and supplied to a two-dimensional display element.

FIG. 10C shows that the data input from the connection device 820 to the drive control / memory conversion unit 811 is 2
When processing the output data for the three-dimensional display element, 2
It is a figure which shows that processing is different when a three-dimensional display element has a horizontal screen and a vertical screen. In the horizontal screen display, the data corresponding to the input coordinate value shown in the lower left of FIG. 10C may be output as the data corresponding to the output coordinate value shown in the lower right, but in the vertical screen display, FIG. It is necessary to convert the input coordinate value shown at the upper left of the above into the output coordinate value shown at the upper right.

As described above, since the process of converting the display data and the drive signal is different between the vertical screen display and the horizontal screen display, the R in the drive control / memory conversion unit 811 is changed.
When processing is performed using the memory 812 that is accessed by the ow address / Column address, FIG.
As shown in (C), high-speed access can be performed by performing address conversion suitable for both vertical screen display and horizontal screen display. This will be described with reference to FIGS. 12 and 13.

In this embodiment, as shown in FIGS. 12 and 13, address conversion is performed so that the same Row address can be used for access in both vertical screen display and horizontal screen display. . It should be noted that in the following description, 3 is set for the display data of resolution 1024 × 768.
Address conversion is performed in 2 × 32 pixel block units.
Not limited to these values, various values can be optimized and used.

FIG. 12 shows a drive control / memory conversion unit 81 suitable for drive control considering vertical screen display and horizontal screen display.
It is a figure for demonstrating the structure of 1. When the display data is input to the drive control / memory conversion unit 811, the write command is written.
In the address conversion unit 1201, when input data is written in the memory 1204, one line corresponds to one Row.
The write address is calculated and the address conversion is performed so that the write address is not written to the address but is written to one Row address in block units of 32 × 32 pixels.

Then, the read / write timing control section 1
The write timing to the memory 1204 having the Row address and the Column address is controlled by the 202, and the data is written to the memory 1204.

When the vertical / horizontal switching signal is input, the read address conversion unit 1203 matches the pixel arrangement according to the horizontal and vertical screens of the two-dimensional display element as shown in the memory address map. Memory 1
The address of the data read from 204 is calculated. Here, the conversion calculation content may be stored in advance in the address conversion unit or may be calculated from the resolution. Further, it may be stored in advance in the read / write timing control unit 1202, or may be calculated from the resolution and supplied to the address conversion unit.

Then, the read / write timing control section 1
By 202, the read timing to the memory 1204 having the Row address and the Column address is controlled, and the data is read from the memory 1204.

FIG. 13A shows a resolution of 1024 × 768.
13B shows an example of a memory address map in which the address conversion is not performed on the display data of FIG.
An example of a memory address map obtained by performing address conversion in units of blocks of 2 pixels is shown. In each memory address map, the Row address is 0 to 2FF (hexadecimal notation),
The Column address is 0 to 3FF (hexadecimal notation).

As shown in FIG. 13A, when the address conversion is not performed, in the horizontal screen display, the arrangement of the pixels of the two-dimensional display element 801 is the same as the arrangement of the memory map. It is possible to access at high speed using the same Row address. However, in the vertical screen display, only when writing to the memory or reading from the memory,
The same Row address can be used to access the memory, and in the other case, the same Row address cannot be used to access the memory. For example,
At the time of writing, it is in the state before conversion shown in FIG. 13, and in this case, the same RO at the time of output (at the time of reading) for the vertical display
It is not possible to access the memory using the W address. Further, in order to access the memory by using the same ROW address at the time of reading, it is necessary to perform conversion at the time of writing.

Therefore, in the present embodiment, as shown in FIG. 13B, the same R is displayed in both the vertical screen display and the horizontal screen display.
In order to access the memory by using the ow address, address control at the time of reading and writing is performed in a block unit of 32 × 32 pixels, and 32 × 3
Allow blocks of 2 pixels to be accessed using the same Row address.

At the time of writing data to the memory, FIG.
As shown in (B), it is converted into an address corresponding to the pixel of the two-dimensional display element, and the data is written in the memory.

The address conversion at this time is performed as follows, corresponding to the input pixel (data input from the connection device) and the output pixel (data output to the two-dimensional display element). When the coordinate value of the input pixel is (Xi, Yi), Xi is 1 or more and 1024 or less, Yi in the horizontal screen display.
Is 1 or more and 768 or less, and the coordinate value (Xo, Yo) of the output pixel to the two-dimensional display element is (Xo, Yo) = (Xi, Yi). In the vertical screen display, Xi is 1 or more and 768 or less, Yi is 1 or more and 1024 or less, and the coordinate value of the input pixel is the coordinate value (Xo, Y) of the output pixel to the two-dimensional display element.
o) becomes (Xo, Yo) = (Yi, 769−Xi).

After converting the coordinate values in this way, the write address to the memory is calculated. Here, (Xo-
Converting 1) into a binary number and converting it to 10 bits, XW (9:
0), and (Yo-1) is converted to a binary number and converted into 10 bits to be YW (9: 0), and the column address is YW (4: 0) & XW (4: 0) (10 bits are the most significant bits). From MLB to the least significant bit MSB,
(YW4 YW3 YW2 YW1 YW0 XW4
XW3 XW2 XW1 XW0)), and the Row address is YW (9: 5) & XW (9:
5) (When 10 bits are arranged from MLB to MSB,
(YW9 YW8 YW7 YW6 YW5XW9 X
W8 XW7 XW6 XW5))).

By performing such address conversion, the input (Xi, Yi) coordinate value data is written in the memory for each of the horizontal screen display and the vertical screen display.
As a result, input data can be written to the same Row address in units of 32 pixels in both horizontal screen display and vertical screen display, and high-speed access to the memory becomes possible.

At the time of reading the data from the memory, the address is calculated as follows as the coordinate value (Xo, Yo) of the output data, and the data is read from the memory.
Output to the dimensional display element.

Here, (Xo-1) is converted into a binary number, and 1
The 0-bit format is set as XR (9: 0), and (Yo-
Converting 1) into a binary number and converting it to 10 bits, YR (9:
0), the column address is YR (4: 0) & X
R (4: 0) (If 10 bits are arranged from the most significant bit MLB to the least significant bit MSB, (YR4 YR3 Y
R2 YR1 YR0 XR4 XR3 XR2 XR
1 XR0)), and the Row address becomes YR
(9: 5) & XR (9: 5) (If 10 bits are arranged from the most significant bit MLB to the least significant bit MSB, (YR
9 YR8 YR7 YR6 YR5 XR9 XR8
XR7 XR6 XR5))).

By performing such address conversion, in each of the horizontal screen display and the vertical screen display, (Xo,
Yo) coordinate value data is read from the memory. As a result, data can be read from the same Row address in units of 32 pixels in both horizontal screen display and vertical screen display.
High-speed access to the memory becomes possible.

In the present embodiment, such a memory address conversion unit is used to drive / control the control unit 810.
Although provided in the memory conversion unit 811, by providing the display control unit 821 of the connection device 820 with an address conversion unit in consideration of vertical display and horizontal display, output corresponding to the vertical screen and the horizontal screen is performed on the connection device side. It is also possible. In this case, the control unit 810 does not perform the address conversion, but only the conversion according to the driving of the two-dimensional display element.

Next, a method of switching between the horizontal screen display and the vertical screen display depending on the application used in the connected device will be described by using an information processing apparatus as the connected device as an example.

FIG. 14 shows the connection device 8 in this embodiment.
20 is a block diagram for explaining the internal structure of 20. FIG. The connection device 821 is a VCR, a PC, or the like, and the two-dimensional display element is a horizontal screen display between the control unit 810 and the display control unit 821 that outputs a video signal, an RGB signal, and the like to the control unit. Or a communication control unit 822 that controls when performing command communication.

The display control unit 821 has a video memory 823.
The display data is stored in the video memory 823. This video memory 823 may be built in the display control section 821, and the main memory 83
It may be shared with 3.

Further, the display control unit 823 and the communication control unit 822 are controlled by the CPU 83 via the CHIP SET 832.
It is connected to 1. The CPU 831 is a central processing unit for performing overall control, and is also connected to other circuits and logic via the CHIP SET 832.

The CPU 831 uses the CHIP SET 832
The main memory 833 is connected to the main memory 833 via a memory, and the main memory 833 stores programs and data used by the CPU. In addition, the settings and programs related to the most basic operation of the connected device are BIOS (Bas
ic Input Output System) 834
Stored in, and these settings and programs are read when the power of the connected device is turned on, and the operation is executed.

A power supply control IC 835 is connected to the power supply SW 840 for operating the power supply of this connected device. The power supply control IC 835 is a logic circuit configured by a one-chip microcomputer or the like that controls a portion of the connected device that supplies power, and operates first when the power is turned on.

Other circuits 836 include a parallel interface, a serial interface, a USB (Uni
An interface portion with an input / output device, such as a versatile serial bus) interface, and controls an input device 840 used by a user, such as a keyboard, a mouse, and a remote controller. Also, the sound LSI 837 is
It is a logic circuit that controls the audio input / output of the connected device,
It is connected to the speaker. In addition, the storage device 838
Is composed of a hard disk drive (HDD), a large-capacity flash memory, and the like, and has a large-capacity program and an OS (Operating System).
Etc. are stored.

In this connected device, when the power SW 839 is operated, the power supply control IC 835 supplies power to each part of the connected device, and the CPU 831 causes the BIOS 834.
Is read, and initial setting and control of each part are performed via the CHIP SET 832 and the power supply control IC 835.
At this time, the entire BIOS 834 may be read into the main memory 833 to perform the operation. After that, the storage device 8
38 boots the Boot-OS to bring the main memory 83
Read to 3. This allows the application stored in the storage device 838 to be activated.

At this time, an application that the user has previously set to display in a vertical screen, or an application that has been registered to display a vertical screen when the product is shipped and has not been changed by the user is started. In this case, the connection device 820 determines by reading from the display device 800 via the control unit 810 the information indicating whether the current display screen state is the horizontal screen or the vertical screen. Then, when the current display screen state is the horizontal screen, the command is sent to the CPU 2 so as to switch to the vertical screen.
01 to CHIP SET 832 and communication control unit 82
2 to the control unit 810. In the control unit 810, the two-dimensional display element 801 is switched to the vertical screen and the display image is switched to the vertical image by the method described above. Connected device 8
At 20, the control unit 810 receives the information that the display has been switched to the vertical screen display, starts the application, and the user operates.

On the other hand, when an application that is not registered or set to perform the vertical screen display is activated, the connected device 820 causes the display device 800 to change the current display screen state via the control unit 810. It is determined by reading the information indicating whether the screen is a horizontal screen or a vertical screen. Then, when the current display screen state is the vertical screen, the command is sent to the CPU 2 so as to switch to the horizontal screen.
01 to CHIP SET 832 and communication control unit 82
2 to the control unit 810. The control unit 810 switches the two-dimensional display element 801 to the horizontal screen and switches the display image to the horizontally long image by the method described above. Connected device 8
At 20, the control unit 810 receives information indicating that the display has been switched to the horizontal screen display, activates the application, and the user operates.

Regarding the determination of whether the screen state is the vertical screen or the horizontal screen, the change history is managed on the side of the connected device, so that the process of reading the screen state information via the control unit 810 is omitted. You can also do it.

A method for setting an application for vertical display by the user is, for example, as shown in FIG. 15, displaying a list of applications currently available to the user on the screen and using the list from the list. A method of selecting and registering by a person can be used.

In the example shown in FIG. 15, the Mailer application and the word processing application have already been registered as applications for vertical screen display. Further, when the user wants to additionally register the Web browser application, the Web browser application is selected from the list of available applications by using the input device 839 such as a mouse, a keyboard, or a remote controller, and the registration button is selected. The Web browser application can be additionally registered as an application for displaying a vertical screen. Further, when the vertical screen display is canceled and the application is changed to the horizontal screen display, the application to be canceled is selected from the vertical screen registered application list by using the input device 839 such as a mouse, a keyboard, or a remote controller. By selecting the release button, the application can be displayed horizontally.

In order to switch between the horizontal screen display and the vertical screen display while the application is being executed, the application program interface of the connected device (hereinafter referred to as AP
(Referred to as I), a vertical screen / horizontal screen switching API can be prepared and used in the application. By calling this API, a screen switching command is transmitted from the connected device to the control unit via the communication control unit 822.

For example, Set Current Disp
Prepare an API called "lay (Function)" and obtain Function = 1: get the current screen display state Return Value = 0: horizontal screen display Return Value = 1: vertical screen display Function = 2: change to horizontal screen display Return Value = 0: Normal change to landscape view Return Value = 1: Change to landscape view ended abnormally Function = 3: Change to portrait view Return Value = 0: Change to portrait view Normal end Return Value = 1: Change to portrait screen display As a function of abnormal termination, switching of portrait screen display and landscape screen display in an application will be described with reference to the flowchart shown in FIG.

It should be noted that no matter what kind of operation the application performs other than the screen switching, since it is not particularly related to the present invention, the description of that part is omitted, and the screen switching is necessary here. I will explain the part that became.

When the application is activated and the screen needs to be switched, it is determined in step S1 whether the horizontal screen display or the vertical screen display is performed.

If a horizontal screen display is desired, in step S2, SetCurrent D of the above API is executed.
Execute display (1) to obtain the current screen display state. In step S3, Return Value
It is determined whether or not e is 1. Return Val
If ue is not 1, it is a horizontal screen display and there is no need to switch screens, and the normal application operation is returned to. If the Return Value is 1, it means that the display is a vertical screen, and therefore the process proceeds to step S4 to switch to a horizontal screen display.

In step S4, in order to switch to the horizontal screen display, Set Current Dis of the above API is executed.
The play (2) is executed, and in step S5, a switching command for switching to the horizontal screen display is issued from the connected device to the control unit and the display device.

In step S6, when the display device receives the command for switching to the horizontal screen display, as described above, the rotating unit is rotated so that the two-dimensional display element becomes the horizontal screen, and when it is finished, the horizontal screen state is set. Is output to the control unit. The control unit is
The drive control / memory conversion unit inside the control unit corresponds to the horizontal screen display as well as receiving the signal indicating the horizontal screen display state and notifying the connected device.

At step S7, when the connected device confirms the signal indicating the horizontal screen state, it returns.
Generates 0 as the Value and the value is read by the application.

At this time, when the display device does not switch to the horizontal screen display state, the signal is that the screen is in the vertical screen display state, and the control unit informs the connected device that the screen display state has been switched. Do not notify. At this time, if a predetermined time is exceeded on the connected device side, a timeout is generated, 1 is generated as Return Value, and when the value is read by the application, error processing is performed. In the example shown in FIG. 16, the process returns to step S4, and the command for switching to the horizontal screen display is issued again.

In such an error process, there is a risk of falling into an infinite loop process, but by using a LOOP count or the like during the error process, such a risk can be avoided. For example, when the error processing is performed 10 times in succession, the user can be notified that the display cannot be switched to the horizontal screen display state, and the operation can be performed without switching to the horizontal screen display. Further, the loop part in the error processing may be performed not in the application but in the API function, and the application may not perform the loop processing. For example, when an error occurs in step S7, the application abnormally ends without performing the loop process. In this case, in the API function, Set Current Dis
When play (2) is executed, Control Un
When a signal indicating that the vertical screen display is supported is supplied from it, the process returns to step S5 of issuing a command for switching to the horizontal screen again, and loop processing is performed.

Depending on the application, Return
When 0 is read as Value, step S8
Connected device supports video signal, R
Generate a GB signal and return to normal application operation.

Next, if a vertical screen display is desired, in step S9, Set Curre of the above API is executed.
nt Display (1) is executed to obtain the current screen display state. In step S10, Return
It is determined whether or not Value is 0. Retur
When n Value is not 0, the screen is not displayed because it is a vertical screen display, and the normal application operation is resumed. Also, Return V
If value is 0, it means horizontal screen display, and therefore the process proceeds to step S11 to switch to vertical screen display.

[0116] In step S11, in order to switch to the vertical screen display, SetCurrent Di of the above API is used.
The spray (3) is executed, and in step S12, a switching command for switching to the vertical screen display is issued from the connected device to the control unit and the display device.

In step S13, when the display device receives the command for switching to the vertical screen display, as described above, the rotating portion is rotated so that the two-dimensional display element becomes the vertical screen, and when it is finished, the vertical screen state is set. Is output to the control unit. The control unit receives the signal indicating the vertical screen display state and notifies the connected device, and the drive control / memory conversion unit inside the control unit also supports the vertical screen display.

In step S14, when the connected device confirms the signal indicating the vertical screen state, it returns
Generates 0 as the Value and the value is read by the application.

At this time, if the display device does not switch to the vertical screen display state, the signal is that it is in the horizontal screen display state, and the control unit informs the connected device that the screen display state has been switched. Do not notify. At this time, if a predetermined time is exceeded on the connected device side, a timeout is generated, 1 is generated as Return Value, and when the value is read by the application, error processing is performed. In the example shown in FIG. 16, the process returns to step S11, and the switching command for switching to the vertical screen display is issued again.

In such an error process, there is a risk of falling into an infinite loop process, but such a risk can be avoided by using a LOOP count or the like during the error process. Further, the loop part in the error processing may be performed not in the application but in the API function, and the application may not perform the loop processing.

Depending on the application, Return
When 0 is read as the value, step S1
In 5, the connected device supports the vertical screen display and video signals,
Generate RGB signals and return to normal application operation.

As described above, it is possible to switch between the vertical screen display and the horizontal screen display in the application.

[0123]

As described above in detail, according to the present invention as set forth in claim 1, when the two-dimensional display element is switched to the horizontal screen or the vertical screen, the two-dimensional display is performed by the rotation supporting means and the stopper means. The element can be stably held. Further, the display image can be switched by the drive control means according to the screen state of the two-dimensional display element, and an image display suitable for a vertical screen or a horizontal screen can be obtained.

According to the second aspect of the present invention, the switching between the horizontal screen and the vertical screen of the two-dimensional display element can be electrically controlled.

According to the third aspect of the present invention, the two-dimensional display element can be stably held by performing positioning and rattling during rotation of the two-dimensional display element.

According to the present invention as set forth in claims 4 and 6, regardless of whether the two-dimensional display element is in a horizontal screen display or a vertical screen display, a high speed access is made to the memory by using the same row address. It can be carried out.

According to the fifth aspect of the present invention, the information indicating whether the two-dimensional display element is in the horizontal screen display or the vertical screen display is communicated between the HMD device and the connection device, and both of them are communicated with each other. It is possible to handle switching of screen states.

According to the present invention as set forth in claim 7, when the application set by the user or the application registered at the time of shipment is started, it can be automatically switched to the horizontal screen display or the vertical screen display. .

According to the present invention described in claim 8, it is possible to switch the display to the horizontal screen display or the vertical screen display as needed in the application.

[Brief description of drawings]

1A and 1B are top views of a state in which a conventional HMD device is mounted.

2A and 2B are side views of a state in which a conventional HMD device is mounted.

3A and 3B are diagrams showing a state of a display screen of a two-dimensional display element in a conventional HMD device.

FIG. 4 is a block diagram for explaining the configuration of a conventional HMD system.

5 (A) and 5 (B) are top views showing a state in which the HMD device according to the embodiment of the present invention is mounted.

6A and 6B are side views showing a state in which the HMD device according to the embodiment of the present invention is mounted.

7A and 7B are diagrams showing a state of a display screen of a two-dimensional display element in the HMD device according to the embodiment of the present invention.

FIG. 8 is a block diagram for explaining a configuration of an HMD system that is an embodiment of the present invention.

9A and 9B are views for explaining a rotation control mechanism and a stopper of a display element in the HMD device which is one embodiment of the present invention.

10 (A-1) and (A-2) are examples of a display image of output data in a line display and a display image of a two-dimensional display element when simply switching from a horizontal screen to a vertical screen, (B-1) and (B-2) are a display image of output data in a line display and a display example of a two-dimensional display element when drive control is performed so that a normal display image is obtained on a vertical screen, (C) is a display image of a connected device and a display image of output data in a line display when drive control is performed so that normal display can be obtained in vertical screen display and horizontal screen display.

FIG. 11 is a perspective view showing an example in which a cylindrical cam is used as a rotation control mechanism of a display element and a stopper in the HMD device according to the embodiment of the present invention.

FIG. 12 is a diagram for explaining a memory conversion unit suitable for drive control in consideration of vertical screen display and horizontal screen display.

13A and 13B are diagrams for explaining an example of a memory map address suitable for drive control in consideration of vertical screen display and horizontal screen display.

FIG. 14 is a block diagram for explaining an internal configuration of a connection device in the HMD system of the present invention.

FIG. 15 is a diagram showing an example of a registration screen for registering an application using a vertical screen display in the HMD system of the present invention.

FIG. 16 is a flowchart for explaining a process of switching between vertical screen display and horizontal screen display in an application in the HMD system of the present invention.

[Explanation of symbols]

101,501 Eyeball 102,502 Half mirror 103, 503 concave mirror 104,504 Two-dimensional display device 400, 800 display device 401,801 Two-dimensional display element 402, 802 Optics 403, 803 Light source part 410, 810 control unit 411 Drive control unit 412, 812 memory 420, 820 Connected device 421, 821 Display control unit 505 Display element rotation control mechanism and stopper 811 Drive control / memory conversion unit 822 Communication control unit 823 video memory 831 CPU 832 CHIP SET 833 main memory 834 BIOS 835 Power control IC 836 Other circuits 837 Sound LSI 838 storage device 839 Input device 840 power switch 901 Rotating part 902 rotation support 903,904 Stopper 905, 906 Movable stopper 907 Rotation control motor / stopper control circuit 908 Rotor stopper 1101 cylinder cam 1102 Fixed part 1103, 1104 1201 write address converter 1202 memory read / write timing control unit 1203 read address conversion unit 1204 memory

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Mizuta Sakuta             22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka             Inside the company (72) Inventor Nozomi Shiotani             22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka             Inside the company F-term (reference) 5C006 AA01 AA02 AB01 AF02 AF03                       AF04 AF42 BB11 BF02 EC13                       FA01                 5C080 AA10 BB05 DD21 EE11 EE23                       JJ01 JJ02 JJ06 JJ07

Claims (10)

[Claims] 1. Two two-dimensional display elements which are mounted on a user's head or face and are used to display an image or image on a screen having different numbers of vertical and horizontal pixels. An optical system means for projecting an image displayed on one of the two-dimensional display elements onto one eye of the user and an image displayed on the other two-dimensional display element onto the other eye of the user, Rotation supporting means for supporting and rotating the two-dimensional display element, stopper means for controlling the rotational position of the two-dimensional display element, and supply to the two-dimensional display element in accordance with the rotation state of the two-dimensional display element. An image displayed on the two-dimensional display element according to whether the two-dimensional display element is a horizontal screen display or a vertical screen display. Switch to landscape image or portrait image A head-mounted display device that can be used. 2. The head mounted display device according to claim 1, wherein the rotation support means electrically controls rotation of the two-dimensional display element. 3. The head mount display device according to claim 1, wherein the stopper means includes means for positioning the two-dimensional display element and adjusting rattling. 4. The drive control means is connected to a memory element that is accessed using a Row address and a Column address, and uses the memory element when display data is input to the drive control means. Drive signal and display data to be supplied to the two-dimensional display element are generated by the drive control means in both cases of the horizontal screen display and the vertical screen display. The address conversion is performed by the drive control unit so that the memory device is accessed using the same Row address when display data is input. Head mounted display device. 5. A head mount display system, comprising: the head mount display device according to claim 1; and a connection device connected to the head mount display device. The display device and the connected device include a communication unit that communicates whether the image displayed on the two-dimensional display element is a horizontally long image or a vertically long image, and the connected device has the two-dimensional display element. A head mounted display system comprising a display control means for controlling a drive signal and display data supplied to the two-dimensional display element depending on whether the display is a horizontal screen display or a vertical screen display. 6. The display control means is connected to a memory element accessed by using a Row address and a Column address, and a drive signal and a display supplied to the two-dimensional display element using the memory element. Data is generated so that the memory element is accessed using the same Row address in both cases of the horizontal screen display and the vertical screen display of the two-dimensional display element. The head mounted display system according to claim 5, wherein address conversion is performed by the display control means. 7. A registration unit and a user who pre-register which of a horizontal screen display and a vertical screen display of the two-dimensional display element is used for an application used in the connected device is set by a user. For connecting the head-mounted display device to the head-mounted display device when the user uses an application.
The head mounted display device is provided with a command issuing means for issuing a command for switching the two-dimensional display element to the horizontal screen display or the vertical screen display according to the registered content or the set content, and the head mounted display device receives the command from the connected device. 6. A command receiving means, a switching means for switching the two-dimensional display element to a horizontal screen display or a vertical screen display according to the command, and a notification means for notifying a state after the screen switching. The head mounted display system according to item 6. 8. The command for the connected device to acquire the current display screen of the two-dimensional display element and switch the two-dimensional display element to the horizontal screen display or the vertical screen display for the head mounted display device. The application program interface for issuing a command is issued from the application program interface to the head mounted display device when the screen needs to be switched in the application, and the two-dimensional image is sent according to the command. The head mounted display system according to claim 5, wherein the display element is switched to a horizontal screen display or a vertical screen display. 9. A head mounted display system comprising the head mounted display device according to claim 1, and a connecting device connected to the head mounted display device. At least one of a registration means and a setting means for the user to set in advance which of the horizontal screen display and the vertical screen display of the two-dimensional display element is to be used for the application used in The connection device has one of the two, and when the user uses the application, the connected device is configured to operate in accordance with registration contents or setting contents with respect to the head mounted display device.
The head mounted display device is provided with a command issuing means for issuing a command for switching the three-dimensional display element to the horizontal screen display or the vertical screen display, and the head mount display device receives the command from the connected device and the command receiving means according to the command. A head mounted display system, comprising: switching means for switching a two-dimensional display element to a horizontal screen display or a vertical screen display; and a notification means for notifying a state after screen switching. 10. A head mounted display system, comprising: the head mounted display device according to claim 1; and a connection device connected to the head mounted display device. Has an application program interface for acquiring the current display screen of the two-dimensional display element and issuing a command for switching the two-dimensional display element to a horizontal screen display or a vertical screen display to the head mounted display device. When a screen change is required in an application, a command is issued from the application program interface to the head mounted display device, and the two-dimensional display element is displayed horizontally or vertically according to the command. Switch to screen display Head-mounted display system.