JPH11331732A - Heat mounted video display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically set a control value through a simple constitution. SOLUTION: Immediately after starting power supply to a system, a control means 27 sends an image signal for displaying a control image to a character generation part 26, and while observing the control image, a user sets the values of a video parameter and an audio parameter. The means 27 reads out the video and audio parameters stored in a storage means 28, a decoder processing part 22 sets the initial value of the video parameter, based on an analog signal D/A converted by a D/A conversion circuit 25 and an audio processing part 23 sets the initial value of the audio parameter. Thereby the user can enjoy proper image and sound, immediately after turning on the power supply.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a head-mounted video display device which is mounted on a head or face to view an image displayed.

[0002]

2. Description of the Related Art FIG. 9 is a block diagram of a conventional head mounted video display device using a small and lightweight liquid crystal panel as a display element. The output of a decoder processing section 1 for inputting video signals and a power switch 2 are shown. Is connected to the display driver 4. The output of the power supply circuit 3 is connected to backlights 6L and 6R for illumination via drivers 5L and 5R, respectively, and the output of the display driver 4 is a display element 7L for left and right eyes composed of a liquid crystal panel which does not emit light. 7R. Optical elements 8L and 8R each composed of a prism are attached to the left and right eye display elements 7L and 7R, respectively, and the optical elements 8L and 8R are respectively incident surfaces 8La and 8Ra, reflecting surfaces 8Lb and 8Rb, and half mirror surfaces 8Lc and 8Rc. Are formed. The left and right drivers 5L and 5R, the backlights 6L and 6R, the display elements 7L and 7R, and the optical elements 8L and 8R form left and right display optical systems 9L and 9R, respectively.

When a power switch 2 is input, a power circuit 3
Starts supply of necessary power to the entire image display device. NT which is a video signal from a TV tuner or a video reproducer
The SC signal is sent to the decoder processing unit 1. Then, the NTSC signal is converted into an RGB signal by the decoder processing unit 1 and then sent to the display driver 4, and the display driver 4 displays an image on the left-eye display element 7L and the right-eye display element 7R. Here, since the left and right display elements 7L and 7R are not self-luminous elements, the backlights 6 for illumination are respectively provided.
L, 6R.

In the left and right display optical systems 9L and 9R,
Display elements 7L, 7R emitted from backlights 6L, 6R
Are incident on the incident surfaces 8La and 8La of the optical elements 8L and 8R.
8Ra, and further incident on the reflecting surfaces 8Lb and 8Rb at an angle of incidence equal to or greater than the critical angle and are totally reflected. The totally reflected light beam is reflected by the half mirrors 8Lc and 8Rc, again enters the reflection surfaces 8Lb and 8Rb at a critical angle or less, and forms an image on the observer's pupils eL and eR. As a result, the observer observes the image displayed on the display elements 7L and 7R in an enlarged manner.

[0005]

However, in the above-mentioned conventional head-mounted image display apparatus, the image parameters such as brightness, hue, and color density immediately after the power is turned on, and the volume, balance, sound quality, etc. The voice parameter is set to a predetermined adjustment value or the adjustment value used immediately before, and the adjustment value immediately after turning on the power cannot be changed by the user's will.

For this reason, when a plurality of users use the same apparatus, the adjustment values of these video and audio parameters differ from one user to another. In addition, even when the same user uses it, it is necessary to adjust again according to the viewing source and the observation environment. In addition, if there are many parameters that can be adjusted, it will be a subtle adjustment, so it is very difficult to match the same adjustment value every time, and it is also difficult to match the adjustment value adjusted last time. .

An object of the present invention is to solve the above-mentioned problems,
It is an object of the present invention to provide a head-mounted video display device that can automatically set an adjustment value with a simple configuration.

[0008]

According to a first aspect of the present invention, there is provided a head-mounted image display device for displaying an image, and an image display driving unit for displaying an image on the image display unit. A head-mounted video display device comprising: an illumination unit for illuminating the image display unit; and an optical system unit for enlarging and guiding an image displayed on the image display unit to an observer's pupil. And an adjustment value setting means for automatically setting the standard adjustment value.

[0009] Also, a head-mounted video display device according to the present invention is an image display means for displaying an image, an image display drive means for displaying an image on the image display means, and a lighting means for illuminating the image display means. And an optical system for enlarging and guiding an image displayed on the image display to an observer's pupil, wherein a storage for storing an adjustment value for each user; Erasing means for deleting the adjustment value of, a discriminating means for identifying the user, and an adjusting value setting means for automatically setting the adjustment value stored in the storage means corresponding to the user identified by the discriminating means. It is characterized by having.

[0010] A head mounted video display device according to the present invention comprises: an image display means for displaying an image; an image display drive means for displaying an image on the image display means; an illumination means for illuminating the image display means; In a head-mounted image display device having an optical system means for enlarging and guiding an image displayed on the image display means to an observer's pupil, a storage means for adding and storing a keyword to adjustments made by a user, Erasing means for deleting the adjustment value and the keyword stored in the storage means, selecting means for selecting the keyword, and adjustment value setting changing means for changing the setting to the adjustment value assigned to the keyword selected by the selecting means. It is characterized by having.

[0011] A head-mounted video display device according to the present invention comprises: an image display means for displaying an image; an image display drive means for displaying an image on the image display means; an illumination means for illuminating the image display means; A head mounted video display device having an optical system for enlarging and guiding an image displayed on the image display to an observer's pupil; a decoder processing unit for converting an input video signal into an RGB signal; a character display unit; The control means and the storage means are mounted on the same substrate, and the control means adjusts the parameters.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in FIGS. FIG. 1 is a perspective view of a head-mounted video display device according to a first embodiment, in which a display unit main body 11 is connected to a relay box 12 via a cable 13 to transmit a video signal, an audio signal, a power supply, and the like. It has become. The relay box 12 has a power jack 1
4. A video input jack 15 for inputting an NTSC video signal from a television tuner or a video reproducer, and an audio input jack 16 for inputting audio are provided. Note that the video input jack 15 and the audio input jack 16 may be combined into one jack.

FIG. 2 shows the display body 11 and the relay box 1.
2, a power supply circuit 21 having a power switch 20, a decoder processing unit 22 to which a video signal is input, and an audio processing unit 23 to which an audio signal is input are arranged in the relay box 12. The output of the decoder processing unit 22 is connected to a signal processing unit 24 and a D / A conversion circuit 25,
The output of the signal processing unit 24 is connected to a control unit 27 via a character generation unit 26. The output of the D / A conversion circuit 25 is connected to the control means 27, the output of the control means 27 is connected to the storage means 28, and the output of the input means 29 is connected to the control means 27. The output of the audio processing unit 23 is connected to the control unit 27 via the D / A conversion circuit 22.

The input means 29 is capable of setting various parameters by means of buttons and switches. For example, a button arranged on the relay box 12 or a remote control which can communicate with the relay box 12 as shown in FIG. The selection button 31 arranged on the unit 30 allows the observer to adjust the brightness, hue, color depth, volume, sound balance,
Sound quality and the like can be set.

The display unit main body 11 comprises left and right image display optical systems 32L and 32R, a display drive circuit 33, and an earphone 34. Signal processing unit 24 of relay box 12
Is connected to the display drive circuit 33, the output of the audio processing unit 23 is connected to the earphone 34, and the output of the power supply circuit 21 is connected to the display drive circuit 33 and left and right drivers 35L and 35R.

Image display optical systems 32L, 32R for left and right eyes
In this case, the output of the display driving circuit 33 is a display element 36 for the left and right eyes which is a liquid crystal panel which does not emit light by itself.
L, 36R, and the outputs of the drivers 35L, 35R output the backlight 3 illuminating the display elements 36L, 36R.
7L and 37R. Then, the display element 36
L and 36R each have an optical element 38 composed of a prism.
L, 38R are attached, and the optical elements 38L, 38R are formed with incident surfaces 38La, 38Ra, reflecting surfaces 38Lb, 38Rb, and half mirror surfaces 38Lc, 38Rc, respectively. The backlight is a left-eye backlight 37L.
And the right-eye backlight 37R may be arranged separately, or a single left and right backlight may be arranged.

In such a configuration, the power switch 2
When 0 is input, the power supply circuit 21 starts supplying power required for the entire image display device. A video signal and an audio signal are input from the TV tuner or the video reproducer to the relay box 12, the video signal is sent to the decoder processing unit 22, and the audio signal is sent to the audio processing unit 23. Control means 27
Sends the D / A conversion circuit 25 audio parameters such as volume, balance, and sound quality stored in the storage means 28. Each audio parameter is D / A converted in the D / A conversion circuit 25 and sent to the audio processing unit 23. In the audio processing unit 23, the audio signal is processed according to these audio parameters and output to the earphone 34.

The control means 27 sends video parameters such as brightness, hue, and color density stored in the storage means 28 to the D / A conversion circuit 25. Each video parameter is D /
The data is D / A converted in the A conversion circuit 25 and sent to the decoder processing unit 22. In the decoder processing unit 22, the NTSC signal is converted into an RGB signal according to these video parameters and sent to the signal processing unit 24. The character generation unit 26 sends image data of an adjustment screen for adjusting the brightness, color, etc. to the signal processing unit 24 according to an instruction sent from the control unit 27. In the signal processor 24, the image data from the character generator 26 is mixed with the input video signal as necessary.

In the present embodiment, the decoder processing section 22 is arranged before the signal processing section 24, but the decoder processing section 22 may be arranged after the signal processing section 24. At this time, the video signal is first input to the signal processing unit 24, where the video signal is mixed with the image data from the character generation unit 26 as necessary, and then converted into RGB signals in the decoder processing unit 22. In this case, since the control unit 27 and the decoder processing unit 22 can be mounted on the same base, the electronic adjustment by the control unit 27 can be easily performed.

The RGB signals from the signal processing section 24 or the decoder processing section 22 are output from the relay box 12 and are transmitted through the cable 13 or the like to the display driving circuit 33 of the display section main body 11.
Is transmitted to Here, the left and right display elements 36L, 36R
Are illuminated by the backlights 37L and 37R, respectively.
Light beams emitted from the backlights 37L and 37R, distributed by the light guide plate, and passed through the display elements 36L and 36R enter the incident surfaces 38La and 38Ra of the optical elements 38L and 38R, and are incident on the reflecting surfaces 38Lb and 38Rb at a critical angle or more. It is incident at an angle of incidence and is totally reflected. Totally reflected light is half mirror surface 38L
The light is reflected by c and 38Rc, enters the reflection surfaces 38Lb and 38Rb at a critical angle or less, and forms an image on the pupils eL and eR of the observer. as a result,
The image displayed on the display elements 36L and 36R is enlarged and observed by the observer.

Next, in the processing in which the video and audio parameters are transmitted from the control means 27 to the decoder processing section 22 and the audio processing section 23, immediately after the system is powered on,
The control unit 27 reads out the video parameters and the audio parameters stored in the storage unit 28. A signal is sent to the D / A conversion circuit 25 according to the value of the read parameter,
Decoder processing unit 2 by D / A converted analog signal
2, the initial values of the video parameters are set, and the audio processing unit 23 sets the initial values of the audio parameters. In this way, the user can instantly enjoy proper video and audio after turning on the power. The user can update the video and audio parameters stored in the storage unit 28 at any time, and the updated parameters are retained in the storage unit 28 even after the power is turned off.

When the user updates the video / audio parameters stored in the storage means 28, the observer selects the selection button 31
When is pressed, the control means 27 sends an image signal for displaying an adjustment screen to the character generator 26, and an adjustment screen as shown in FIG. 4 is displayed on the display screen. The observer operates the selection button 31 while looking at the adjustment screen to adjust the brightness, color,
The values of video parameters such as color depth and audio parameters such as volume, balance, and sound quality are set. Here, if the observer selects "Register to standard value" R, the value in the storage means 28 is rewritten to the value of the video / audio parameter at the present time. The initial value is set to a new video / audio parameter registered by the user. When “Restore” B is selected, the storage unit 28
Can be returned to the device default value.

As described above, since the user can set the video and audio parameters immediately after the power is turned on, it is possible to save the user from having to make adjustments each time.
Also, by mounting the decoder processing unit 22 and the microcomputer on the same board, electronic adjustment of video and audio under the control of the microcomputer becomes easy, and at the same time, the adjustment mechanism can be simplified, so that parts such as volume can be reduced. can do.

FIG. 5 shows a display screen immediately after power-on according to the second embodiment, which is a modification of the method for updating the video and audio parameters stored in the storage means 28. As in the first embodiment,
The RGB signals from the relay box 12 are transmitted to the left and right display elements 36.
L, 36R, left and right video display optical systems 32L, 3L
The enlarged image is presented to the observer through the 2R, and an audio signal is output to the earphone 34.

When a user name is entered in the input field A immediately after the power is turned on to the system, the control means 27 stores the video and audio parameters stored in the storage means 28 corresponding to the user name. read out. A signal is sent to the D / A conversion circuit 25 in accordance with the read parameter value, and an initial value of a video parameter is set in the decoder processing unit 22 by the D / A converted analog signal. And the initial values of the voice parameters are set. Therefore, after turning on the power, the user can instantly appreciate the appropriate video and audio for himself. The user can update the video and audio parameters stored in the storage unit 28 as needed, and the updated parameters are retained in the storage unit 28 even after the power is turned off.

As shown in Table 1, the storage means 28 stores video parameters and audio parameters corresponding to respective user names, and the control means 27 reads out each parameter using the user name as a key. be able to.

Table 1 User Brightness Color Matching Color Depth Volume Sound Quality yama 50 1200 200 3 kawa 30 5 100 10 2 uri 40 10 50 10 3

Next, when updating the video and audio parameters stored in the storage means 28, when the user presses the selection button 31, the control means 27 sends an instruction for displaying an adjustment screen to the character generation unit 26. . Upon receiving the instruction, the character generator 26 sends an image signal for displaying an adjustment screen to the signal processor 24, and an adjustment screen as shown in FIG. 6 is displayed on the display screen. The user selects the selection button 3 while looking at the adjustment screen.
The user operates 1 to set values of video parameters such as brightness, hue, and color density, and values of audio parameters such as volume, balance, and sound quality. When the user name is entered in the “user name input field” N and “Register to standard value” R is selected, the entered user name and the current value of the video / audio parameter are stored in the storage unit 28. Table 1 is added. However, if the entered user name already exists in Table 1, the values of the video and audio parameters are updated to the current values. The new video / audio parameters registered by the user are set. On the other hand, when "Restore" B is selected, the value of the storage means 28 can be returned to the default value of the apparatus.

As described above, by holding the adjustment value for each user, even when a plurality of users use the same device, the user can set the video and audio parameters immediately after turning on the power in advance. It is possible for each user to easily set the adjustment value to his / her preference.

FIG. 7 shows a display screen at the time of automatic adjustment by a keyword according to the third embodiment, which is a further modification of the method of updating the video and audio parameters stored in the storage means 28. The principle of output is the same as in the first and second embodiments.

When the observer selects a keyword from the menu screen M during video observation, the control means 27 reads out the video parameters and audio parameters stored in the storage means 28 corresponding to the keyword. A signal is sent to the D / A conversion circuit 25 according to the value of the read parameter,
The A-converted analog signal is used by the decoder processing unit 22
In this case, the initial value of the video parameter is set, and the initial value of the audio parameter is set in the audio processing unit 23. Therefore, even if the viewing source or viewing environment changes,
The observer can instantly view appropriate video and audio by simple operations. Also in this case, the user can update the video and audio parameters stored in the storage unit 28 at any time, and the updated parameters are retained in the storage unit 28 even after the power is turned off.

As shown in Table 2, the storage means 28 stores video parameters and audio parameters corresponding to respective keywords, and the control means 27 can read out each parameter using the keywords as keys. .

Table 2 Keywords Brightness Hue Color Depth Volume Sound Quality sharp 100 5 200 203 soft 50 1 100 10 2 dark 20 10 50 15 3

Next, when updating the video and audio parameters stored in the storage means 28, when the user presses the selection button 31, the control means 27 sends an instruction for displaying an adjustment screen to the character generation unit 26. . The character generation unit 26 that has received the instruction sends an image signal for displaying an adjustment screen to the signal processing unit 24, and an adjustment screen as shown in FIG. 8 is displayed on the display screen. The user selects the selection button 3 while looking at the adjustment screen.
The user operates 1 to set values of video parameters such as brightness, hue, and color density, and audio parameters such as volume, balance, and sound quality. When a keyword is input to the “keyword input field” K and “Registration” R is selected, the input keyword and the current value of the video / audio parameter are added to Table 2. However, if the input keyword already exists in Table 2, the value of the video / audio parameter is updated to the current value, and even if the power is turned on again thereafter, the registered parameter is stored in the storage unit 28. Is held. When a keyword is input in the “keyword input field” D and “delete” C is selected, the input keyword and each parameter corresponding to the keyword are stored in the storage unit 2.
8 is deleted from the table.

As described above, the adjustment values of a plurality of patterns can be newly added, so that the adjustment can be instantaneously changed by an easy operation even if the viewing source or the observation environment changes. Becomes

[0036]

As described above, the head-mounted image display device according to the present invention allows the user to set standard adjustment values in advance, so that the user does not need to perform adjustment each time. Appropriate video and audio can be instantly appreciated.

Further, the head-mounted video display device according to the present invention automatically sets the adjustment value stored in the storage means corresponding to the user identified by the determination means, so that the adjustment value for each user can be adjusted. Since the values are held, even when a plurality of users use, each user can easily set the adjustment value to his / her preference.

The head-mounted video display device according to the present invention selects a keyword corresponding to the adjustment made by the user and changes the setting to the adjustment value assigned to the keyword, so that the adjustment values of a plurality of patterns are newly set. The adjustment value can be instantaneously changed by an easy operation even if the source to be viewed or the observation environment changes.

A head-mounted video display device according to the present invention is provided with a microcomputer in which a decoder processing unit, a character display unit, a control unit, and a storage unit are mounted on the same substrate, and parameters are electronically adjusted by the control unit. Electronic adjustment of video and audio by control becomes easy,
The adjustment mechanism can be simplified, and the size and weight of the device can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a first embodiment.

FIG. 2 is a configuration diagram.

FIG. 3 is a configuration diagram of a remote control unit.

FIG. 4 is an explanatory diagram of a display screen at the time of electronic adjustment.

FIG. 5 is an explanatory diagram of a display screen immediately after power-on according to a second embodiment.

FIG. 6 is an explanatory diagram of a display screen at the time of an adjustment screen.

FIG. 7 is an explanatory diagram of a display screen at the time of automatic adjustment using a keyword.

FIG. 8 is an explanatory diagram of a display screen at the time of an adjustment screen.

FIG. 9 is a configuration diagram of a conventional head mounted display device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Display main body 12 Relay box 14 Power jack 15 Video input jack 16 Audio input jack 21 Power supply circuit 22 Decoder processing part 23 Audio processing part 24 Signal processing part 26 Character generator 27 Control means 33 Display drive circuit 34 Earphone 36L, 36R Display Element 37L, 37R Backlight 38L, 38R Optical element

Claims (9)

[Claims] 1. An image display means for displaying an image, an image display drive means for displaying an image on the image display means, an illumination means for illuminating the image display means, and an image displayed on the image display means. A head-mounted image display device having an optical system means for enlarging and guiding to a pupil of a person, comprising a storage means for storing a standard adjustment value, and an adjustment value setting means for automatically setting the standard adjustment value. Characteristic head-mounted image display device. 2. An image display means for displaying an image, an image display drive means for displaying an image on the image display means, an illumination means for illuminating the image display means, and an image displayed on the image display means. A head-mounted video display device having an optical system for enlarging and guiding to a user's pupil, a storage for storing an adjustment value for each user, an erasing unit for deleting an adjustment for each user, Determining means for identifying
A head-mounted image display device comprising: an adjustment value setting unit for automatically setting an adjustment value stored in the storage unit in accordance with the user identified by the determination unit. 3. The head mounted image display device according to claim 2, wherein said user discriminating means inputs a user name when power is turned on. 4. An image display means for displaying an image, an image display drive means for displaying an image on the image display means, an illumination means for illuminating the image display means, and observing the image displayed on the image display means. A head-mounted image display device having an optical system for enlarging and guiding the user's pupil, a storage unit for adding a keyword to the adjustment performed by the user and storing the adjustment, an adjustment value and a keyword stored in the storage unit Deleting means for deleting a keyword, selecting means for selecting a keyword,
A head-mounted image display device comprising: an adjustment value setting change unit that changes a setting to an adjustment value assigned to the keyword selected by the selection unit. 5. The head mounted image display device according to claim 4, wherein said keyword selecting means is selected by a user through a menu operation. 6. An image display means for displaying an image, an image display drive means for displaying an image on the image display means, an illumination means for illuminating the image display means, and observing the image displayed on the image display means. A head-mounted video display device having an optical system for enlarging and guiding the pupil of a person, a decoder processing unit for converting an input video signal into an RGB signal,
A head-mounted video display device, wherein a character display unit, a control unit, and a storage unit are mounted on the same substrate, and parameters are adjusted by the control unit. 7. The head-mounted image display device according to claim 6, further comprising storage means for storing a standard adjustment value immediately after power-on, and adjustment value setting means for automatically setting the standard adjustment value. 8. A storage unit for storing an adjustment value for each user, an erasing unit for removing an adjustment value for each user, an identification unit for identifying a user, and a user identified by the identification unit. 7. The head-mounted image display device according to claim 6, further comprising: an adjustment value setting unit that automatically sets the adjustment value to the adjustment value stored in the storage unit. 9. A storage unit for adding a keyword to an adjustment made by a user and storing the adjustment, a deletion unit for deleting an adjustment value and a keyword stored in the storage unit, a selection unit for selecting a keyword, and the selection unit. 7. The head-mounted image display device according to claim 6, further comprising: an adjustment value setting change unit that changes a setting to an adjustment value assigned to the keyword selected by the unit.