Source: https://patents.google.com/patent/JP3673217B2/en
Timestamp: 2020-03-30 20:51:12
Document Index: 405055351

Matched Legal Cases: ['art 12', 'art 12', 'art 12', 'art 12', 'arts 12', 'art 12', 'art 12', 'art 12', 'art 12', 'art\n71']

JP3673217B2 - Video display device - Google Patents
JP3673217B2
JP3673217B2 JP2001387842A JP2001387842A JP3673217B2 JP 3673217 B2 JP3673217 B2 JP 3673217B2 JP 2001387842 A JP2001387842 A JP 2001387842A JP 2001387842 A JP2001387842 A JP 2001387842A JP 3673217 B2 JP3673217 B2 JP 3673217B2
JP2001387842A
JP2003185967A (en
2001-12-20 Application filed by オリンパス株式会社 filed Critical オリンパス株式会社
2001-12-20 Priority to JP2001387842A priority Critical patent/JP3673217B2/en
2003-07-03 Publication of JP2003185967A publication Critical patent/JP2003185967A/en
2005-07-20 Publication of JP3673217B2 publication Critical patent/JP3673217B2/en
The present invention relates to a video display device capable of displaying a three-dimensional video (3D video).
Various video display devices for displaying 3D video have been proposed in the past. However, 3D video displayed on the video display device may create a different observation state from daily life, and may feel unsightly or unnatural. It is said that content with a lot of parallax changes such as large parallax or a subject jumping out of the screen can have a strong stereoscopic effect, but it is harder to see, and long viewing should be avoided. .
In consideration of this, for example, in Japanese Patent Laid-Open No. 11-355808, a parallax amount of an input 3D video signal is measured, and an influence level that will be given to an observer is estimated based on the parallax amount. By controlling the stereoscopic degree of the 3D video presented to the observer, or by switching the 3D video to a two-dimensional video (2D video), it is possible to extend the video with a large influence for a long time. A video system that avoids viewing has been proposed.
On the other hand, as defined in EIAJ CPR-1204, 3D video distinguishes L and R information based on 3D information superimposed in the vertical blanking period of the luminance signal. It is known that an R signal is provided to be displayed on a display on the R side.
However, in the video system disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 11-355808, the degree of influence is estimated by simply measuring the amount of parallax of the 3D video signal. There is a possibility that it will not function well against image noise, and there is a possibility that it will be forcibly switched to a two-dimensional image against the wishes of the observer.
On the other hand, there is a method of providing 3D video as defined by the above-mentioned EIAJ. However, the current 3D video software in Japan and overseas arranges the L side signal in the even field and the R side signal in the odd field. Contrary to this, there are a mixture of R-side signals arranged in even fields and L-side signals arranged in odd fields.
For this reason, in the video display device that displays the video by manually switching L and R according to the provided 3D video software, the influence on the observer is strengthened or provided by wrong switching. Some 3D video software may cause inconveniences such as the inability to view 3D video.
Accordingly, an object of the present invention made in view of the above point is to provide an image display apparatus that can reduce the degree of influence of a 3D image on an observer and can always observe an image in an appropriate state.
The invention according to claim 1, which achieves the above object, provides a video display device that receives left and right video signals capable of stereoscopic video display that are alternately supplied in a field sequence and displays video on the left and right video display elements.
3D protection processing that detects the amount of parallax between the left and right video signals supplied to the left and right video display elements, calculates the degree of influence on the observer, and determines whether the calculated degree of influence has reached a reference value Means,
When it is determined by the 3D protection processing means that the degree of influence has reached the reference value, that effect is selectively displayed on the left and right video display elements.At the same time, when displaying that fact, it is possible to select on the left and right video display elements whether to continue to view the video along with the display.Display control means for displaying on the screen.
Claim 2The invention according toClaim 1In the video display device described in
When it is selected that the video is to be continuously viewed, the display control means supplies the video signal of the odd field or the even field to the left and right video display elements to forcibly display the video in two dimensions. When it is selected not to continue viewing, the main power supply is forcibly turned off.
Claim 3The invention according toClaim 1 or 2In the video display device described in
A password input means for selectively inputting an observer's password;
Password storage means for selectively storing a password from the password input meansWhen,
Password determination means for determining whether or not a password from the password input means is stored in the password storage means;
When it is determined by the password determination means that the password is stored, the display control means determines whether the influence has reached the reference value in the 3D protection processing means. When the stereoscopic image is displayed by the left and right video display elements without being displayed on the video display element, and the password determining means determines that no password is stored, the 3D protection processing means determines the degree of influence. When it is determined that the reference value has been reached, a message to that effect is displayed on the left and right video display elements.
Claim 4The invention according toClaim 1, 2 or 3In the video display device described in
Field discriminating means for discriminating the left and right video signal fields based on the amount of parallax detected by the 3D protection processing means;
The display control means supplies the left video signal to the left video display element and the right video signal to the right video display element according to the discrimination result of the field discrimination means. It is.
Claim 5The invention according toClaim 4In the video display device described in
During the field discriminating period by the field discriminating means, the display control means prohibits the display of the stereoscopic video by the left and right video display elements and displays that the left and right video display elements are in the field discriminating period. It is characterized by doing.
Hereinafter, an embodiment of a video display device according to the present invention will be described with reference to the drawings, taking as an example a case where the video display device is applied to a head-mounted video display device.
1 to 6 show a first embodiment of the present invention. FIG. 1 is a perspective view showing a head-mounted image display device and a controller from the front side, and FIG. 2 is a head-mounted image display device. FIG. 3 is a partially exploded perspective view of the video display system shown in FIG. 2, and FIG. 4 is a block diagram showing the circuit configuration of the main part of the apparatus main body and controller shown in FIG. 5 is a block diagram showing an example of the configuration of the 3D protection processing unit shown in FIG. 4, and FIG. 6 is a block diagram showing an example of the configuration of the influence degree calculation unit shown in FIG.It is a figure.
As shown in FIG. 1, the head-mounted image display device 1 of the present embodiment includes a device main body 5 that covers a built-in video display system by a front cover 5a and a rear cover 5b, Joint members 6L, 6R fixed to the left and right, head support frames 7L, 7R pivotally supported so as to be foldable to the joint members 6L, 6R, and the head support frames 7L, 7R, which will be described later Left and right inner phones 9L and 9R that can be accommodated in the inner phone holding section 7b as needed, an inner phone cable 9a for transmitting audio signals to these inner phones 9L and 9R, and a head support frame 7L, 7R and the joint members 6L and 6R, and a slide type adjuster 8 that can be slid and inserted. Further, although not shown, a nose pad member extending from the apparatus main body 5 so as to be extendable and contracting and supporting the apparatus main body 5 together with the head support frames 7L and 7R in contact with the nose bridge of the user is also provided.
The joint members 6L and 6R have pivot support portions 6a for rotatably supporting the head support frames 7L and 7R, and a groove 6b for inserting the inner phone cable 9a is formed on the outer surface side. Has been.
The head support frames 7L and 7R include a pivotal support 7a for engaging with the pivotal support 6a of the joint members 6L and 6R, and inner phones 9L and 9L formed at the end opposite to the pivotal support 7a. An in-phone holding portion 7b for storing and holding 9R as required, a groove 7e formed on the outer surface side for inserting the inner phone cable 9a, and a slide type adjuster 8 at an insertion position and a retraction position The insertion position locking portion 7c and the retracted position locking portion 7d are separated by ribs or the like.
The slide-type adjuster 8 includes a locking claw 8a that selectively engages with the insertion position locking portion 7c and the retraction position locking portion 7d of the head support frames 7L and 7R, and the locking claw 8a is connected to the insertion position locking portion 7d. When engaged with the stop portion 7c, the angle of opening of the head support frames 7L and 7R is inserted between the pivot support portions 6a of the joint members 6L and 6R and the pivot support portions 7a of the head support frames 7L and 7R. And a rotation angle restricting claw portion 8b for restricting so as to be narrowed, and a rectangular hole 8c for reducing the weight is formed in part.
This slide type adjuster 8Head support frame7L, 7R is detachably attached to the outer surface side, and by attaching from the outside of the inner phone cable 9a accommodated along the groove 7e, the inner phone cable 9a and further the inner phone 9L. , 9R has a function of holding on the temporal side so that it does not hang down in front of the eyes.
Further, a main cable 2 for transmitting a video signal, an audio signal, and the like to the head-mounted image display device 1 is integrally extended from the lower side of the joint member 6L. A controller 3 for controlling video and audio of the head-mounted video display device 1 is connected.
The controller 3 is connected to the main cable 2 extending from the head-appearing image display device 1 in an integrated manner, and the exterior is configured by fitting the upper cover 31 and the lower cover 32. A connection cable 4 for connecting to an external device is integrally extended. Note that the connection cable 4 may be configured to be detachably connected by providing a connector terminal on the controller 3.
The controller 3 includes an operation button 34 for displaying a menu, moving a target item, changing a setting value related to the target item, and confirming a set item, and a power switch 36 (see FIG. 4), a power lamp 35 is provided which emits light when the power is turned on and visually notifies that effect.
The operation button 34 can be tilted in four directions, up, down, left and right, from the center position when not operated, and can be further pressed. The operation button 34 on the exterior of the controller 3 is exposed. The vicinity of the opening is formed as a lower step portion 31b that is lower than the other upper surface portion 31a, and the height at which the operation button 34 is exposed from the lower step residence 31b is lower than the height of the upper surface portion 31a. .
Further, the operation button 34 is disposed so as to be positioned below a straight line connecting the corner portion on the lower step portion 31b side of the upper surface portion 31a and the surface of the lower step portion 31b, and the controller 3 is placed. Regardless of whether the operation button 34 is touched or not. Thus, even if the controller 3 is placed on the desk or the like, for example, obliquely, the operation button 34 is not inadvertently pressed.
Next, the configuration of the video display system in the head-mounted video display device 1 will be described with reference to FIGS.
This video display system includes left and right backlights 17L and 17R each composed of a white planar light emitting LED unit, and a liquid crystal display element (LCD) as a left and right video display element for expressing a video corresponding to a supplied video signal. 15L, 15R (see FIG. 4), and prisms 11L, 11R for guiding the luminous flux of the image expressed by the LCDs 15L, 15R and illuminated by the corresponding backlights 17L, 17R toward the left and right eyeballs of the user. A circuit board 18 mounted on the optical system holding member 12 and further mounted with a control circuit for controlling the LCDs 15L and 15R and a control circuit for controlling the backlights 17L and 17R is mounted on the optical system holding member 12. Yes.
The optical system holding member 12 is formed by connecting the optical system holding part 12L on the left eye side and the optical system holding part 12R on the right eye side integrally by a connecting part 12b, and is fastened at a substantially central part of the connecting part 12b. By screwing a screw or the like into the portion 12a, it is fixed to the rear cover 5b.
The optical system holding member 12 is formed with a light beam passage window 12d made of rectangular holes and the optical system holding parts 12L and 12R. Locking protrusions 12c are provided at the left and right corners of the optical system holding part 12L and 12R. Other locking projections 12j are provided at the center of the side facing the locking projection 12c.
In addition, position defining pins 12e for positioning and fixing the circuit board 18 project from the two corners on the connecting part 12b side of the optical system holding part 12R on the right eye side.
Furthermore, receiving portions 12h into which engaging convex portions 11a (described later) of the prisms 11L and 11R are respectively inserted are formed at the left and right ends of the optical system holding member 12, and the receiving portions 12h are formed on the upper surface side of these receiving portions 12h. Each has a boss 12g protruding therefrom. The inside of the boss 12g is a screw hole into which a screw is screwed.
Similarly, the left and right end portions on the lower surface side of the connecting portion 12b of the optical system holding member 12 are formed with shape portions into which the engaging convex portions 11a of the prisms 11L and 11R are respectively inserted.
The prisms 11L and 11R are so-called free-shaped prisms that employ free-form surfaces that can ensure high optical performance while reducing the size and weight, and reflect the light flux of the image by the corresponding LCDs 15L and 15R twice. Later, it is emitted toward the user's eyeball.
The prisms 11L and 11R have system-convex convex portions 11a projecting from the left and right upper ends thereof, and U-grooves 11b for screwing screws are engraved therein, and the engaging convex portions 11a receive the receiving portions 12h. Or, it is fixed to the optical system holding member 12 by fitting to the connecting portion 12b and fastening a screw to a screw hole screwed into the inside of the boss 12g or the lower surface side of the connecting portion 12b. .
On the other hand, the left and right optical system holding portions 12L and 12R of the optical system holding member 12 are provided with low-pass filters 13L and 13R for removing unnecessary high frequency components of the frequency components included in the light flux, and a rectangular hole 14a. Mask members 14L and 14R for restricting the passage of unnecessary light such as flare and LCDs 15L and 15R are fixed at predetermined positions while covering and protecting the LCDs 15L and 15R, and for attaching the backlights 17L and 17R. The backlight holding frames 16L and 16R and the backlights 17L and 17R are attached in order from the bottom to the top.
The low-pass filters 13L and 13R and the mask members 14L and 14R are configured so that one of the four corners is notched obliquely and is not mounted in the wrong direction. The low-pass filter 13R and the mask member 14R are not shown.
Each of the backlight holding frames 16L and 16R is formed of a transparent resin or the like, and has a light transmitting surface 16a, a tip engaging portion 16b for engaging with the locking projection 12j of the optical system holding member 12, and an optical A pair of left and right proximal end system coupling portions 16c for engaging with the locking projections 12c of the system holding member 12, and a locking claw 16d for sandwiching and locking the corresponding backlights 17L and 17R in a pair of left and right, The fixed shape portion 16e for sandwiching and fixing one end side of the circuit board 18 between the upper end surface 12f of the optical system holding portion 12R and the other end side of the circuit board 18 between the upper end surface of the optical system holding portion 12L. It has a fixed shape portion 16f for sandwiching and fixing between them.
The backlight holding frames 16L and 16R are members having the same shape, and by forming the left and right with the same mold in this way, the cost can be reduced and the assembly work can be easily performed. It has become.
The corresponding backlights 17L and 17R are sandwiched between the latching claws 16d so that the lower surfaces 17d serving as the light emitting surfaces of the backlight holding frames 16L and 16R face the light transmission surface 16a. It is supposed to be fixed.
The backlights 17L and 17R each include a substantially tapered casing 17a that is thin on one side and thick on the other side when viewed from the side. The LED as the light source is disposed on the side, and the upper surface 17c (more specifically, the inner surface) of the housing 17a becomes an inclined reflecting surface for uniformly reflecting the light emitted by the LED, and the lower surface 17d of the housing 17a. Is a light emitting surface for emitting the uniformed illumination light to the outside.
As described above, since the backlights 17L and 17R are configured using the LED as a light source, it is possible to achieve low power consumption as compared with the case where the fluorescent tube is used as the light source.
One or a plurality of LEDs are arranged in a row in the housing 17a. For example, the LED is configured as a light source that emits light having a relatively short wavelength (such as blue light), and the inclined reflection surface is fluorescently scattered. By constituting as a reflective surface, it is converted into uniform white light and reflected.
A flexible printed circuit board 19 is extended from the LCDs 15L and 15R, and a plurality of lead wires 20 are extended from the backlights 17L and 17R after being fixed once by a fixing tape 22. The connector 19a mounted on the substrate 18 is connected to the lead wire connecting portion 20a.
The circuit board 18 is composed of, for example, a rigid circuit board on which LCD 15L and 15R control circuits and backlight 17L and 17R control circuits as indicated by reference numeral 21 are mounted, and further, the inner phone cable 9a and the main cable 2 are connected thereto. ing.
The circuit board 18 is miniaturized as much as possible, and is placed and fixed on the connecting portion 12b between the left optical system holding portion 12L and the right optical system holding portion 12R. It has become.
In other words, the two corners of the circuit board 18 on the optical system holding part 12R side are provided with holes 18a and long holes 18b for engaging with the position defining pins 12e, respectively. Has been made.
The circuit board 18 is further sandwiched between the upper end surface 12f and the fixed shape portion 16e on the optical system holding portion 12R side, and is sandwiched between the upper end surface and the fixed shape portion 16f on the optical system holding portion 12L side. It is fixed to the optical system holding member 12.
The video display system described above is covered by the front cover 5a and the rear cover 5b and is housed in the apparatus main body 5.
At this time, an antistatic film (not shown) is attached to a portion further outside the backlights 17L and 17R. This prevents static electricity from the outside and protects the internal circuit.
Further, an eyepiece window (not shown) is formed on the rear cover 5b and a transparent plate (not shown) is fitted, and images emitted from the prisms 11L and 11R are observed through the eyepiece window. It is like that.
Further, in accordance with the front cover 5a having a gently sloping shape toward the front, the tapered backlights 17L and 17R as described above have the thin side on the front and the thick side (the LED is arranged). It is arranged so that the provided side) is the rear (that is, the eyepiece side).
Next, the circuit configuration of the main part of the head-mounted image display device according to the present embodiment will be described with reference to FIG.
The controller 3 includes a YC separation circuit 40, a decoder 41, an A / D conversion circuit 42, a synchronization separation circuit 43, a 3D protection processing unit 44, an external memory 45, an operation button 34, a microcomputer 47, an audio preamplifier 48, an audio main amplifier 49, A power supply unit 51 and a power switch 36 are provided. Further, as described above, the apparatus main body 5 includes the control circuit 21, the left and right LCDs 15L and 15R, and the left and right inner phones 9L and 9R.
An analog composite video signal including left and right video signals capable of 3D video display that are alternately output in a field sequence from an external device is supplied to the YC separation circuit 40 in the controller 3 to be separated into a luminance signal Y and a color signal C. Further, the signal is converted into an analog RGB video signal by the decoder 41 and supplied to the control circuit 21 of the apparatus body 5, and is supplied from the control circuit 21 to the left and right LCDs 15 </ b> L and 15 </ b> R.
The left and right LCDs 15L and 15R are driven and controlled by the control circuit 21 based on a command from the microcomputer 47 of the controller 3. For example, in the 3D observation mode, the left and right LCDs 15L and 15R are alternately driven in synchronization with the field, thereby displaying, for example, an even field video signal on the left eye LCD 15L, and an odd field image on the right eye LCD 15R. A 3D image is observed by displaying a signal and fusing these left and right images by an observer. In the 2D video (2D) observation mode, the left and right LCDs 15L and 15R are simultaneously driven to display the same video signals in both fields on the left and right LCDs 15L and 15R.
The selection of the 3D or 2D observation mode is performed by a predetermined operation of the operation button 34 from the microcomputer 47 via the control circuit 21 to the left and right LCDs 15L and 15R with an OSD (on-screen display) signal for a 3D / 2D selection screen. Are selected by operating the operation button 34 on the OSD screen.
In addition, the left and right audio signals supplied together with the composite video signal from the external device are amplified by the audio preamplifier 48 of the controller 3 and further amplified by the audio main amplifier 49, and then from the left and right inner phones 9L and 9R of the device body 5. Output.
On the other hand, the luminance signal Y separated by the YC separation circuit 40 in the controller 3 is converted into a digital signal by the A / D conversion circuit 42 and supplied to the 3D protection processing unit 44. The luminance signal Y is also supplied to the sync separation circuit 43, where the vertical sync signal is separated from the luminance signal Y to generate a field sync signal, and the field sync signal is supplied to the 3D protect processing unit 44. . The controller 3 has an S terminal. The luminance signal Y input to the S terminal is supplied to the decoder 41, the A / D conversion circuit 42, and the synchronization separation circuit 43, and the color signal C is supplied to the decoder 41. To do.
As illustrated in FIG. 5, the 3D protection processing unit 44 includes a memory control unit 61, an influence degree calculation unit 62, and an influence degree determination unit 63. In this 3D protection processing unit 44, the digital video signal of the sequential field from the A / D conversion circuit 42 is synchronized with the field synchronization signal from the synchronization separation circuit 43 to the external memory 45 via the memory control unit 61. Multiple fields (here, 4 fields in sequence) are written while being sequentially updated, and the video signals of the sequential 2 fields (ODD field and next EVEN field) written in the external memory 45 are similarly field-synchronized. The signal is read out via the memory control unit 61 in synchronization with the signal, and the influence degree calculation unit 62 detects the amount of parallax in the horizontal and vertical directions, for example, by a known block matching method based on the read video signal of the sequential field. The degree of influence on the observer is calculated based on the sequentially detected amount of parallax, and the degree of influence is calculated as a reference value. Is determined by the influence degree determination unit 63, and the determination result is output to the microcomputer 47.
As shown in FIG. 6, the influence calculation unit 62 includes a preprocessing unit 65, a parallax measurement unit 66, an evaluation unit 67, an error code setting unit 68, and an evaluation value accumulation unit 69. It has a static parallax evaluation unit 67-1 and a dynamic parallax evaluation unit 67-2.
The sequential field video signals read from the external memory 45 by the memory control unit 61 are supplied to the pre-processing unit 65, where the sequential two-field images are stored in the memory of the pre-processing unit 65 at a predetermined timing. Then, pre-processing such as resolution conversion and smoothing is performed.
The parallax measurement unit 66 calculates the parallax statistic by measuring the parallax amount included in the stereoscopic image from the preprocessed image. Here, the parallax statistic is statistical data such as a minimum value or a mode value of the parallax amount included in the stereoscopic image.
The evaluation unit 67 converts the parallax statistic into an evaluation value based on a preset rule. This rule is determined in consideration of human visual characteristics. Of the evaluation unit 67, the static parallax evaluation unit 67-1 performs static evaluation of the amount of parallax, and sets an evaluation value according to the value of the parallax statistic. If the image has a large parallax, a large evaluation value is set. On the other hand, the dynamic parallax evaluation unit 67-2 performs dynamic evaluation of the parallax amount, and sets an evaluation value according to the temporal change of the parallax statistic.
Here, depending on the nature of the input 3D video, the accuracy of the parallax measurement may not be sufficiently obtained, and the reliability of the calculated parallax statistic may be low. Therefore, the error status is recorded by the error code setting unit 68, and the evaluation value is changed as necessary with reference to the error code setting unit 68 when setting the evaluation value.
In the evaluation value accumulating unit 69, the evaluation values obtained by the evaluating unit 67 are integrated and added to the accumulated values so far, and the accumulated value is supplied to the influence degree determining unit 63 as an influence degree to determine the influence degree. It is determined whether or not the degree of influence has reached a reference value by the unit 63, the determination result is supplied to the microcomputer 47, and the microcomputer 47 determines the left and right by the control circuit 21 based on the determination result in the degree of influence determination unit 63. The display operation of the LCDs 15L and 15R is controlled.
The controller 3 and each part of the apparatus main body 5 are supplied with required power from the power supply unit 51 provided in the controller 3 when the power switch 36 is turned on.
Less than,Of the above configurationVideo display deviceIn the reference example developed together with the present inventionActionTheDescription will be made with reference to the flowchart shown in FIG. 7 and the OSD display examples shown in FIGS.
First, when the power switch 36 is turned on (step S1), the microcomputer 47 causes the left and right LCDs 15L and 15R to select a 2D or 3D observation mode as shown in FIG. 8 via the control circuit 21. The OSD is displayed, and the cursor is moved under the operation of the operation button 34 by the observer on the selection screen to select 2D or 3D (step S2).
If the 2D observation mode is selected in step S2, the left and right LCDs 15L and 15R are simultaneously driven as described above in the normal routine in step S3, and the same images in both fields are displayed on the left and right LCDs 15L and 15R. Display the signal.
On the other hand, when the 3D observation mode is selected in step S2, the input of the 3D video signal to the 3D protection processing unit 44 is started (step S4), and the influence calculation unit 62 uses the block matching method to select all blocks. For each block, a parallax amount in the horizontal and vertical directions is detected (step S5), an evaluation value is calculated based on the parallax amount (step S6), and parallax detection and parallax evaluation for all blocks are performed in step S7. When it is detected that the measurement has been completed, the evaluation values of all the blocks are integrated and added to the accumulated value up to that time (step S8), and the accumulated value is supplied to the influence degree determination unit 63 as an influence degree to obtain the reference value. It is determined whether or not it has been reached (step S9).
If the influence level does not reach the reference value in step S9, the process returns to step S8, the parallax evaluation values in the next sequential field are accumulated, and if the influence level reaches the reference value, step S10 is reached at that time. In FIG. 9, the microcomputer 47 displays the warning screen as shown in FIG. 9A on the left and right LCDs 15L and 15R via the control circuit 21, for example, and then displays the notification screen as shown in FIG. After the display, the power switch 36 is automatically turned off to forcibly stop the 3D video observation.
in this way3DIn the observation mode, the 3D protection processing unit 44 detects the amount of parallax and accumulates the evaluation value. When the accumulated value (influence degree) reaches the reference value, the warning screen is displayed on the OSD to warn the observer and power Switch 36 is automatically turned offifThe influence on the observer due to the 3D image observation can be surely reduced.
FIGS. 10 (a), (b) and (c) show the present invention.First embodimentFIG. 5 is a diagram for explaining an OSD display example.
This embodiment isAs shown in FIGS.In the configuration, when the influence level reaches the reference value during the video observation in the 3D observation mode, the microcomputer 47 displays a warning screen as shown in FIG. 10A on the left and right LCDs 15L and 15R via the control circuit 21, for example. When the display button is displayed and the observer selects “continue” or “do not continue” video operation by operating the operation button 34, and “continue” is selected, for example, FIG. When the notification screen as shown in FIG. 5 is displayed on the OSD, the mode is forcibly switched to the 2D observation mode and the video observation is continued in a normal routine, and “not continue” is selected, for example, FIG. After the notification screen as shown in FIG. 5 is displayed on the OSD, the power switch 36 is automatically turned off to forcibly stop the observation of the 3D video.
In this way,In the case of the above reference exampleSimilarly to the above, the influence on the observer due to the 3D image observation can be surely reduced, and when the “continue” image observation is selected, the observer is automatically switched to the 2D observation mode. The video can be observed to the end.
Incidentally, some conventional head-mounted video display devices generally prohibit use under the age of 16 and register a password. Such a video display device is for personal use only when a password is registered, and depending on the person, after 3D observation mode has reached the reference value, the 3D video is continuously affected. Some people do not.
Therefore, the present inventionSecond embodimentThe password can be registered and the video can be observed without registering the password. However, when a password that has already been registered is input when the apparatus is used, the degree of influence is the reference in the 3D observation mode. Even after reaching the value, the 3D image can be observed continuously.
FIG.Second embodimentIt is a block diagram which shows the circuit structure of the principal part. The head-mounted image display apparatus is provided with a password memory 71 that is connected to the microcomputer 47 and stores a password in the configuration shown in FIG. 4, and the other configuration is the same as that shown in FIG. The same reference numerals are assigned to the same constituent elements and the description thereof is omitted.
In the present embodiment, the password of the device user is previously input and stored in the password memory 71 by operating the operation button 34, and whether or not the password is set when the device is used, that is, whether or not the password is input. When a password is input, the microcomputer 47 controls the display of video on the left and right LCDs 15L and 15R via the control circuit 21 depending on whether or not the input password is registered in the password memory 71.
That is, in the 3D observation mode, if it is determined in step S9 shown in FIG. 7 that the influence level has reached the reference value, the microcomputer 47 determines whether or not a password is set as shown in the flowchart in FIG. (Step S11).
Here, when it is determined that a password is set, that is, when the password is input when the apparatus is used, and the microcomputer 47 confirms that the input password matches the password registered in the password memory 71. The OSD displays a warning screen as shown in FIG. 13A, for example, on the left and right LCDs 15L and 15R via the control circuit 21, and the observer “continues” or “does not continue” 3D video observation as it is. Is selected by operating the operation button 34 (step S12), and when “continue” is selected, for example, a notification screen as shown in FIG. 13B is displayed on the OSD and shown in FIG. Returning to step S5, 3D video display is continued as it is.
In this case, once the warning screen shown in FIG. 13A is displayed, the 3D observation mode is continued until the power switch 36 is turned off by the observer without displaying this warning screen. Or when the process returns from step S12 in FIG. 12 to step S5 in FIG. 7, the influence degree accumulated so far is reset and the calculation of the influence degree is started, and each time the influence degree reaches the reference value. The warning screen shown in FIG. 13A is displayed to select whether or not to continue the 3D observation mode.
On the other hand, when “not continue” is selected on the warning screen shown in FIG. 13A in step S12, for example, a notification screen as shown in FIG. The power switch 36 is automatically turned off to stop observation of 3D video.
On the other hand, if it is determined in step S11 in FIG. 12 that a password has not been set, that is, if a password has not been input when the apparatus is used, or if a password is input, the input password is registered in the password memory 71. If it is confirmed by the microcomputer 47, for example, a warning screen as shown in FIG. 10 (a) is displayed on the OSD, and the observer observes the video observation as it is or does not continue. (Step S13), and when “Continue” is selected, for example, a notification screen as shown in FIG. 10B is displayed on the OSD, and the mode is forcibly switched to the 2D observation mode. When the video observation is continued (step S14) and “not continue” is selected, for example, a notification screen as shown in FIG. After OSD display, forcibly stops the observation of the 3D image by automatically turning off the power switch 36.
According to the present embodiment, since the password is registered in advance and the password registered when the apparatus is used can be input, it is possible to observe the 3D video source in the 3D observation mode to the end. Video observation is possible.
In addition,Second embodimentIn this case, the video can be observed without registering the password. However, the password can be registered so that the video cannot be observed unless the registered password is input at the time of use. In this case, step S11 in FIG. 12 is omitted and step S12 is executed when the influence level reaches the reference value, or the calculation of the influence degree and the warning display are not performed, and the 3D video is set. Can be observed.
FIG. 14 illustrates the present invention.Third embodimentIt is a block diagram which shows the circuit structure of the principal part. This head-mounted video display device is provided with a field discriminating unit 75 for discriminating the left and right video signal fields based on the amount of parallax detected by the 3D protect processing unit 44 in the 3D observation mode in the configuration shown in FIG. The control circuit 21 is controlled by the microcomputer 47 in accordance with the determination result in the field determination unit 75 so that the left video signal is supplied to the left LCD 15L and the right video signal is supplied to the right LCD 15R. 4 is the same as that of FIG. 4, the same reference numerals are given to the same components as those in FIG. 4 and the description thereof is omitted.
In other words, as described above, some field-sequential 3D video signals are defined by EIAJ. However, current domestic and overseas 3D video software uses L-side signals for even fields and R-side signals for odd fields. On the other hand, and the signal on the R side in the even field and the signal on the L side in the odd field are mixed. When the odd-numbered field video signal is fixedly displayed on the R-side LCD 15R on the LCD 15L, the provided 3D video software has the even-numbered field as the R-side video signal and the odd-numbered field as the L-side video signal. This causes inconveniences such as making the influence on the observer stronger and making it impossible to view 3D images.
Therefore, in the present embodiment, the field discriminating unit 75 discriminates the fields of the left and right video signals based on the parallax amount detected by the influence degree calculating unit 62 (see FIG. 6) of the 3D protection processing unit 44, and the discrimination. The microcomputer 47 controls the control circuit 21 so that the left LCD 15L is driven in the field period in which the left video signal is supplied according to the result, and the right LCD 15R is driven in the field period in which the right video signal is supplied. Then, the left video signal is displayed on the left LCD 15L, and the right video signal is displayed on the right LCD 15R.
Here, field discrimination based on the amount of parallax in the field discriminating unit 75 is comprehensively discriminated from the following three characteristics 1), 2) and 3).
1) If there is too much parallax for one polarity, there is the reverse possibility.
This point will be described with reference to FIGS. 15A and 15B and FIG. 15A and 15B are diagrams for explaining the amount of parallax in the 3D video signal, and FIG. 15A shows an observation mode of the 3D video in which the sphere appears to pop out, and FIG. ) Shows images displayed on the left and right LCDs 15L and 15R at that time. In FIG. 15B, a triangle mark indicates an image at infinity, a circle mark indicates a sphere that is displayed in 3D (projecting display), XL is the horizontal position of the sphere of the L image, and XR is the R image of the R image. The horizontal positions of the spheres are shown, and XL and XR are not equal and are shifted to the right or left from the median.
As shown in FIG. 15 (a), when the images shown in FIG. 15 (b) are displayed on the left and right LCDs 15L and 15R, respectively, and viewed with the left and right eyeballs 82L and 82R through the left and right lenses 81L and 81R, The left and right eyeballs 82L and 82R are displayed at the in-focus virtual image position 83, and two images displayed at the virtual image position 83 are fused and observed as one image at the fusion position 84. Here, the distance from the positions of the left and right lenses 81L and 81R to the fusion position 84 is called a convergence distance, the distance from the positions of the left and right lenses 81L and 81R to the virtual image position 83 is called a viewing distance, and the amount of horizontal parallax is The difference between the horizontal positions of the images is expressed by, for example, (XL-XR), and this amount of parallax corresponds to the convergence distance. If the amount of parallax is large, it means that the degree of popping out is large.
However, as shown in FIG. 16, when the R side image is displayed on the L side LCD 15L and the L side image is displayed on the R side LCD 15R, the XR of the image displayed on the R side LCD 15R increases. The sphere shifts from the center of the screen to the right, and the amount of parallax becomes negative.
Thus, when many images included in the 3D video have the above relationship, it is determined that the left and right videos are displayed in reverse. In the above example, since the horizontal parallax amount is detected from (XL-XR), it becomes negative when the left and right images are reversed, but when the horizontal parallax amount is detected from (XR-XL). On the other hand, it grows positively.
2) The lower half of the upper half and the lower half of the screen generally have larger parallax.
In the case of a normal landscape, the lower part of the screen is often a near view and the upper part is a distant view. For example, as shown in FIG. .
In consideration of this, for example, as shown in FIG. 18A, when a spherical object 86 in front of the wall surface 85 is imaged by looking down on the left and right cameras 87L and 87R, the left and right images are shown in FIG. As shown in (b), when this is displayed in reverse on the left and right LCDs 15L and 15R, it becomes as shown in FIG. 19 and the same phenomenon as in the case of 1) occurs. Therefore, when the parallax is large in the reverse direction in the lower half of the screen, it is determined that the left and right images are displayed in reverse.
3) When vertical parallax occurs at the screen edge, the right image is shifted upward at the upper right edge, and the right image is shifted downward at the lower right edge.
That is, as shown in FIG. 20 (a), when the wall surface 85 is imaged by the left and right cameras 87L and 87R, the left and right images are as shown in FIG. 20 (b). Here, when attention is paid to the upper right ends A and A ′ of the wall surfaces displayed on the left and right screens, the position of the upper right end A ′ of the right image is shifted by h minutes from the position of the upper right end A of the left image. When attention is paid to the lower right ends B and B ′, the position of the right lower end B ′ of the right image is shifted downward from the position of the lower right end B of the left image.
On the other hand, when the image shown in FIG. 20B is displayed on the left and right LCDs 15L and 15R in reverse as shown in FIG. 21, the above relationship is reversed. Therefore, when such vertical parallax occurs, it is determined that the left and right images are displayed in reverse.
The field discriminating unit 75 discriminates the left and right video signal fields from the above three characteristics based on the parallax amount detected by the 3D protection processing unit 44, and the video signals displayed on the left and right LCDs 15L and 15R are reversed. In this case, driving of the left and right LCDs 15L and 15R by the control circuit 21 is switched via the microcomputer 47 so that the left video signal is correctly displayed on the left LCD 15L and the right video signal is correctly displayed on the right LCD 15R. The reading order of the video signals of the sequential fields from the external memory 45 by the memory control unit 61 (see FIG. 5) of the 3D protection processing unit 44 is switched in reverse.
During the field period by the field discriminating unit 75, the left and right LCDs 15L,15RWithout displaying the video signal from the external device, an OSD display is displayed on the blue back or black back to indicate that the field is being detected, such as “detecting”. Is displayed on the left LCD 15L, and the control circuit 21 is controlled by the microcomputer 47 so that the right video signal is correctly displayed on the right LCD 15R. Thereafter, the first embodimentAlternatively, the second embodimentalikeMake it work.
As described above, in this embodiment, the field discriminating unit 75 discriminates the left and right video signal fields based on the parallax amount detected by the 3D protection processing unit 44 in the 3D observation mode, and the left video signal is the left video signal. Since the LCD 15L is controlled so that the right video signal is correctly displayed on the right LCD 15R, the 3D video is in a normal state without being affected by the order of the left and right video signals of the provided 3D video software. You can watch at.
FIG. 22 shows the present invention.Fourth embodimentIt is a block diagram which shows the circuit structure of the principal part. In the present embodiment, the above first toThirdEach of the embodiments is basically different in that the function of the 3D protection processing unit 44 is provided to the digital image processing unit.
In FIG. 22, a controller 300 includes a YC separation circuit 402 that separates a composite video signal VBS input from an A / V input terminal 101 into a luminance signal Y and a color signal C, and an A / V input terminal 101 or S video input. A switch 104 that selects and outputs a signal from a connected terminal according to which of the terminals 103 is connected, and a luminance signal Y and a color signal C from the switch 104 are red (R), A decoder 105 that converts signals of green (G) and blue (B) into colors and extracts a vertical synchronizing signal VD, a horizontal synchronizing signal HD, and a field signal E / O, and an RGB signal output from the decoder 105 and a computer A selector switch 108 for switching between RGB PC video signals input to the RGB input terminal 107 from an external device such as A / D converters 109R, 109G, and 109B that sample RGB signals from the switch 108 at a sampling frequency twice as high as normal and convert them into digital signals, respectively, and these A / D converters 109R, 109G, and 109B digitize Digital image processing for performing LCD display corresponding to pixel shifting (wobbling) of a four-point shift while performing the 3D protection processing described in the above embodiment based on the processed video signal, and the image A digital image processing unit 110 for performing the mask processing, a DRAM 111 as a working memory of the digital image processing unit 110, and a D / A for converting digital RGB signals output from the digital image processing unit 110 into analog signals, respectively. Converter 112R, 112G, 1 2B, an audio unit 114 that switches between an audio signal input from the A / V input terminal 101 and an audio signal input from the audio input terminal 113 and adjusts the volume and sound quality according to the switching, and an RGB input terminal 107 A waveform shaping circuit 115 that shapes the input vertical synchronization signal VD and horizontal synchronization signal HD, a power supply circuit 116 that supplies necessary power to each part of the controller 300 and each part of the apparatus main body 150, and a power supply for the power supply circuit 116 A power supply voltage detection circuit 117 for detecting a voltage;2A PROM 118; an operation button 119 having a power button, a menu button, a selection button, and the like; a vertical synchronization signal VD from the decoder 105, a horizontal synchronization signal HD, a field signal E / O, and a vertical synchronization signal VD from the waveform shaping circuit 115; Horizontal synchronization signal HD, detection voltage from power supply voltage detection circuit 117, E2And a CPU 120 that controls the operation of each unit based on the stored contents of the PROM 118, the operation of the operation buttons 119, and the like.
Where E2In the PROM 118, various setting values and initial values related to video / audio and the like are stored in association with the video source, and adjustment values arbitrarily set by the user in relation to the video source are stored. In this embodiment, as video sources, four types of video signals of NTSC and PAL composite video signals and S video signals in AV mode, and PC video signals from an external device such as a computer in PC mode are used. A total of five types of video sources can be selected, and adjustments relating to the video are made independently for each of these video signals. For example, for each video signal in the AV mode, contrast, brightness, color density, hue, sharpness, The white balance red and white balance blue items can be adjusted. For the PC video signal in the PC mode, the contrast and bright items can be adjusted. Regarding the audio signal, it is possible to adjust each item such as volume, bass, treble, balance, and surround independently in the AV mode and the PC mode. In addition, the reference value of the degree of influence in the 3D observation mode is appropriately changed by the observer to change E2Store in the PROM 118.
In addition to the left and right LCDs 151L and 151R, the left and right backlights (BL) 152L and 152R, and the left and right wobbling elements (WB) 153L and 153R, the apparatus main body 150 includes the LCDs 151L and 151R based on analog RGB signals from the controller 300. LCD driving circuit 154 for driving, left and right backlight (BL) driving circuits 155L and 155R for driving backlights 152L and 152R, and left and right wobbling element (WB) driving circuits 156L and 156R for driving wobbling elements 153L and 153R And E2PROM157 and this E2A timing generator (TG) unit 158 for controlling the operations of the LCDs 151L and 151R, the backlight drive circuits 155L and 155R, the wobbling element drive circuits 156L and 156R, etc., based on the stored contents of the PROM 157 and signals from the CPU 120 of the controller 300, Left and right inner phones 159L, 159R.
Where E2In the PROM 157, for each backlight drive circuit 155L, 155R, control data corresponding to the power supply voltage for driving the corresponding backlight 152L, 152R with substantially the same predetermined illumination brightness, for example, the power supply voltage is used as the reference voltage. Offset data for initial data at a certain time is stored in advance.
In the present embodiment, the AV mode and the PC mode are switched and selected by OSD (on-screen display) by operating the operation button 119, and the AV switch or the PC input is selected by the changeover switch 108 by this OSD switch. . Note that, when the S video input terminal 103 is connected, the switch 104 is switched so that S priority is given.
Further, the CPU 120 performs video setting according to the video source, and according to the video setting, the input video signal is subjected to image processing in the decoder 105, the digital image processing unit 110, and the LCD driving circuit 154 and displayed on the left and right LCDs 151L and 151R. At the same time, the audio setting is performed according to the AV mode or the PC mode, and the input audio signal is processed by the audio unit 114 according to the audio setting and output from the left and right inner phones 159L and 159R.
In other words, in video settings, confirm the video source and2The adjustment value of the corresponding video source is read from the PROM 118, and each read adjustment value is written in the corresponding circuit unit, for example, the decoder 105, the digital image processing unit 110, the LCD driving circuit 154, and the timing generator unit 158. Thus, the input video signal is processed in accordance with each set adjustment value and displayed on the left and right LCDs 151L and 151R. Note that when the video source is a PC video signal, the processing in the decoder 105 is not performed.
In the audio setting, the video source is confirmed and E is set according to the AV mode or the PC mode.2The adjustment value of the corresponding mode is read from the PROM 118, the read adjustment values are written to the audio unit 114, and the input audio signal is processed in accordance with the set adjustment values, and the left and right inner phones 159L and 159R are processed. Output.
Thus, E2The PROM 118 stores various setting values and initial values related to video / audio in relation to the video source, and also stores adjustment values arbitrarily set by the user, based on the input video source.2By processing the input video / audio signal with the data of the corresponding video source stored in the PROM 118, it is possible to set subtle video differences for each video source as data and without requiring a call operation. Input video / audio signals can be processed automatically. Therefore, even if the video source is changed, the video can always be observed in a desired state without performing any operation, and the usability can be improved.
Note that the 3D protection processing in the digital image processing unit 110 is the first and second processing described above.Or the third embodimentTherefore, the description is omitted here.
According to the present invention, in the 3D observation mode, the amount of parallax of the left and right video signals supplied to the left and right video display elements is detected by the 3D protection processing unit, and the degree of influence on the observer based on the detected amount of parallax Is calculated, and it is determined whether or not the calculated influence level has reached the reference value. When it is determined that the influence level has reached the reference value, the display control means notifies the right and left video display elements. Selectively display onAt the same time, when displaying that fact, it is displayed on the left and right video display elements as to whether or not to continue to view the video along with the display.Since it did in this way, the influence degree of 3D image | video to an observer can be reduced and an image | video can always be observed in an appropriate state.
FIG. 1 is a perspective view showing a head-mounted image display device and a controller according to a first embodiment of the present invention from the front side.
2 is a perspective view showing a state in which a video display system of the head-mounted video display device shown in FIG. 1 is assembled. FIG.
3 is a partially exploded perspective view of the video display system shown in FIG.
FIG. 4 is a block diagram showing a circuit configuration of a main part in the first embodiment.
5 is a block diagram showing a configuration of an example of a 3D protection processing unit shown in FIG.
6 is a block diagram showing a configuration of an example of an influence degree calculation unit shown in FIG. 5. FIG.
[Fig. 7]Reference examples developed with the present inventionIt is a flowchart for demonstrating operation | movement of.
[Fig. 8]Similarly, reference examplesIt is a figure which shows the example of OSD display in.
[Fig. 9]Reference exampleIt is a figure which shows the example of OSD display in.
FIG. 10 shows the present invention.First embodimentIt is a figure which shows the example of OSD display for demonstrating.
FIG. 11 shows the present invention.Second embodimentIt is a block diagram which shows the circuit structure of the principal part in FIG.
FIG.Second embodimentIt is a flowchart for demonstrating operation | movement of the principal part.
FIG. 13Second embodimentIt is a figure which shows the example of OSD display in.
FIG. 14 shows the present invention.Third embodimentIt is a block diagram which shows the circuit structure of the principal part in FIG.
FIG. 15 is a diagram for explaining a fourth embodiment;
FIG. 16 Similarly,Third embodimentIt is a figure for demonstrating.
[Fig. 17]Third embodimentIt is a figure for demonstrating.
[Fig. 18]Third embodimentIt is a figure for demonstrating.
FIG. 19Third embodimentIt is a figure for demonstrating.
FIG. 20 Similarly,Third embodimentIt is a figure for demonstrating.
[Fig.21]Third embodimentIt is a figure for demonstrating.
FIG. 22 shows the present invention.Fourth embodimentIt is a block diagram which shows the circuit structure of the principal part in FIG.
5 Device body
9L, 9R inner phone
15L, 15R Liquid crystal display (LCD)
34 Operation buttons
40 YC separation circuit
41 Decoder
42 A / D conversion circuit
43 Sync separation circuit
44 3D protection processing section
45 External memory
47 Microcomputer
48 voice preamplifier
49 Voice main amplifier
61 Memory control unit
62 Impact calculator
63 Influence degree judgment part
71 Password memory
75 Field discriminator
In a video display device that receives left and right video signals that can be displayed in three-dimensional video, which are alternately supplied in sequence, and displays video on the left and right video display elements,
When it is determined by the 3D protection processing means that the degree of influence has reached the reference value, that effect is selectively displayed on the left and right video display elements, and when displaying that effect, A video display device comprising: display control means for selectively displaying on the left and right video display elements whether or not video is to be continuously viewed along with display.
When it is selected that the video is to be continuously viewed, the display control means supplies the video signal of the odd field or the even field to the left and right video display elements to forcibly display the video in two dimensions. The video display device is characterized in that the main power supply is forcibly turned off when it is selected not to continue viewing .
The video display device according to claim 1 or 2,
Password storage means for selectively storing a password from the password input means;
When it is determined by the password determination means that the password is stored, the display control means determines whether the influence has reached the reference value in the 3D protection processing means. When the stereoscopic image is displayed by the left and right video display elements without being displayed on the video display element, and the password determining means determines that no password is stored, the 3D protection processing means determines the degree of influence. When it is determined that the reference value has been reached, a message to that effect is displayed on the left and right video display elements .
In the video display device according to claim 1, 2, or 3,
The display control means supplies the left video signal to the left video display element and the right video signal to the right video display element in accordance with the discrimination result of the field discrimination means. Display device.
The video display device according to claim 4 ,
During the field discriminating period by the field discriminating means, the display control means prohibits the display of the stereoscopic video by the left and right video display elements and displays that the left and right video display elements are in the field discriminating period. A video display device characterized by:
JP2001387842A 2001-12-20 2001-12-20 Video display device Expired - Fee Related JP3673217B2 (en)
JP2001387842A JP3673217B2 (en) 2001-12-20 2001-12-20 Video display device
US10/480,495 US7538768B2 (en) 2001-12-20 2002-03-15 Image display device utilizing 3D protecting process by detecting a parallax value
PCT/JP2002/002511 WO2003055234A1 (en) 2001-12-20 2002-03-15 Image display device
JP2003185967A JP2003185967A (en) 2003-07-03
JP3673217B2 true JP3673217B2 (en) 2005-07-20
ID=19188097
JP2001387842A Expired - Fee Related JP3673217B2 (en) 2001-12-20 2001-12-20 Video display device
US (1) US7538768B2 (en)
JP (1) JP3673217B2 (en)
WO (1) WO2003055234A1 (en)
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2001-12-20 JP JP2001387842A patent/JP3673217B2/en not_active Expired - Fee Related
2002-03-15 US US10/480,495 patent/US7538768B2/en not_active Expired - Fee Related
2002-03-15 WO PCT/JP2002/002511 patent/WO2003055234A1/en active Application Filing
US20040239685A1 (en) 2004-12-02
JP2003185967A (en) 2003-07-03
WO2003055234A1 (en) 2003-07-03
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