JP2957883B2 - 3D effect glasses - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to glasses for generating a three-dimensional effect utilizing the Pulfrich effect.

[0002]

2. Description of the Related Art Conventionally, in order to obtain a three-dimensional image having left and right parallax, a two-dimensional stereoscopic video signal (three-dimensional video signal) obtained by imaging with a dedicated stereoscopic imaging device is recorded by a stereoscopic VTR or the like. It was necessary to reproduce this and reproduce it on a dedicated three-dimensional display or the like.

Therefore, according to this method, it is not possible to use existing two-dimensional video software, and it is necessary to newly produce three-dimensional video software, which causes an increase in the cost of a three-dimensional image reproduction system. .

[0004] On the other hand, there is a method of obtaining a three-dimensional effect by using the relationship between the perception time and the stimulus intensity (Pulrich effect), in which the brighter light is illuminated earlier even with the light stimulus which is lit at the same time. That is, when there is an object moving in the horizontal direction in a normal video signal (two-dimensional video signal), stereoscopic viewing is possible by observing this image using glasses having different transmittances on the left and right. The glasses are disclosed in, for example,
No. 205120.

According to this method, three-dimensional video can be reproduced using existing two-dimensional video software without producing new three-dimensional video software.

[0006]

By the way, in the conventional glasses used in the above method, the right and left transmittances are determined in advance.

[0007] Therefore, for example, when observing video software in which a subject in front of the background moves from left to right using glasses having a lower transmittance on the right side than on the left side, it is difficult to view the subject on the background. The stereoscopic view is possible because the object appears to pop out, but conversely, when viewing video software where the subject moves from right to left, natural stereoscopic vision is impossible because the subject appears to be retracted with respect to the background. There was a disadvantage of becoming.

[0008] The present invention provides a three-dimensional video reproducing apparatus capable of stereoscopic viewing by the Pulfrich effect regardless of the direction of motion of video software.

[0009]

SUMMARY OF THE INVENTION The present invention is directed to stereoscopic effect generating glasses provided with a pair of left and right liquid crystal shutters for observing an image displayed on a display in which at least a part moves in a horizontal direction. The stereoscopic effect generating glasses are characterized in that a control voltage is selectively applied to one of the pair of liquid crystal shutters according to the control signal to reduce the transmittance.

[0010]

According to the above-described means, when the subject moves from left to right, a control voltage corresponding to the moving speed is applied to the liquid crystal shutter for the right eye. As a result, the right liquid crystal shutter becomes translucent, the amount of light incident on the right eye is reduced as compared with the left eye, and stereoscopic viewing is enabled by the Pulfrich effect.

In a scene where a subject moves from right to left,
A control voltage corresponding to the movement speed is applied to the liquid crystal shutter for the left eye, so that stereoscopic viewing is possible.

[0012]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a display device and stereoscopic effect generating glasses according to the present embodiment. Display device 1
Is mounted with an infrared light emitting section 2 and a transmission circuit (not shown). The three-dimensional effect generating glasses 3 are provided with an infrared light receiving section 4 and a receiving circuit is built in the same housing as the light receiving section. Further, liquid crystal shutters 5 and 6 are mounted on the lens portion of the three-dimensional effect generating glasses 3 and are transparent when no voltage is applied, and are variable so that the transmittance is reduced according to the applied voltage. It is controlled.

That is, based on the motion of the image currently reproduced on the display device 1, the direction and amount of motion are transmitted to the three-dimensional effect generating glasses 3 by infrared rays, and one of the liquid crystal shutters becomes transparent based on this information. By controlling the other liquid crystal shutter to be translucent, a difference in luminance occurs between the images incident on the left and right eyes of the observer, and stereoscopic viewing is enabled by the Pulfrich effect.

Next, FIG. 2 shows a block diagram of a transmission circuit on the display device side. The input two-dimensional video signal is supplied to a display circuit 7 and also to a transmission circuit indicated by a broken line. This transmission circuit comprises a motion detection circuit 8, a CPU
9 and an infrared encoder 10. First, a motion vector is detected by the motion detection circuit 8. Next, CPU 9
Determines the motion amount and direction of the moving portion of the image based on the motion vector, and uses this data as the infrared encoder 10.
And modulates the infrared light with the data. The modulated infrared light is output from the infrared light emitting unit 2.

FIG. 3 shows a block diagram of a receiving circuit of the stereoscopic effect generating glasses. The infrared light received by the infrared light receiving unit 4 is decoded by the infrared decoder 11. Then, the decoded data generates a control voltage corresponding to the movement amount in the control voltage generation circuit 12 and outputs the control voltage to the switch 14.

The direction of movement of one of the data is determined by a left / right determination circuit 13. The output of the switch is
4 to supply the control voltage to one of the left and right liquid crystal shutters 5 and 6.

That is, when a subject moves from left to right,
The switch 14 is connected to the liquid crystal shutter 5 for the right eye, and a control voltage corresponding to the moving speed is applied to the liquid crystal shutter 5. As a result, the right liquid crystal shutter 5 becomes translucent, the amount of light incident on the right eye decreases compared to the left eye, and the subject appears to jump out due to the Pulfrich effect,
Stereoscopic vision becomes possible.

In a scene where a subject moves from right to left,
The switch 14 is connected to the liquid crystal shutter 6 for the left eye.
Next, FIG. 4 shows a second embodiment of the present invention.

In the first embodiment, a dedicated display device having an infrared light emitting unit and a transmission circuit is required. However, in this embodiment, a general-purpose display device such as an existing television receiver can be used.

That is, the adapter 16 is connected to the video output terminal of the existing television receiver 15. The adapter 16 has a built-in transmission circuit section and infrared light emitting section 2 which are indicated by broken lines in FIG. Further, the three-dimensional effect generating glasses 3 are the same as those in FIG. 1, and the operation is completely the same.

In the first and second embodiments, the wireless connection is provided between the display device or the adapter and the three-dimensional effect generating glasses 3, but it may be wired. FIGS. 5 and 6 show a third embodiment of the present invention.

In this embodiment, as shown in FIG. 5, a CCD 17 and a circuit block are provided on the three-dimensional effect generating glasses 3 side. Then, the screen of the television receiver 15 is photographed by the CCD 17, and the movement is detected from the photographed output.

That is, as shown in FIG. 6, the output of the CCD 17 is subjected to signal processing by a video signal processing circuit 18, and a motion vector is detected from the video signal by a motion detection circuit 19. First,
A detection area having a size such that an image portion of the television receiver is photographed is provided in the CCD imaging area. Then, a motion vector is separately detected inside and outside the detection area. Then, the two motion vectors are supplied to the arithmetic circuit 20. This arithmetic circuit 20 subtracts the motion vector outside the area from the motion vector inside the detection area. Therefore, if the user of the stereoscopic effect generating glasses keeps his head still during observation, no motion vector outside the area is generated, and only the motion vector inside the area is output. On the other hand, when the user moves his / her head, a motion vector outside the area is generated. By subtracting this from the motion vector within the area, the motion of the observer's head is corrected, and the motion of the image is accurately detected. be able to.

The operation circuit 20 and thereafter are the same as in the embodiment of FIG. Accordingly, a general-purpose display device such as an existing television receiver can be used as in the second embodiment.

[0025]

As described above, according to the three-dimensional effect generating glasses of the present invention, stereoscopic viewing by the Pulfrich effect is possible regardless of the direction of movement of the two-dimensional video software. More parts can be made.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a display and stereoscopic effect generating glasses according to an embodiment of the present invention.

FIG. 2 is a block diagram of a transmission circuit on the display side in the embodiment.

FIG. 3 is a block diagram of a receiving circuit on a stereoscopic effect generating glasses side in the embodiment.

FIG. 4 is a view illustrating a display and stereoscopic effect generating glasses according to a second embodiment of the present invention.

FIG. 5 is a diagram illustrating a display and stereoscopic effect generating glasses according to a third embodiment of the present invention.

FIG. 6 is a circuit block diagram according to a third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Display 2 Infrared light emitting part 3 Three-dimensional effect generating glasses 4 Infrared light receiving part 5, 6 Liquid crystal shutter 8 Motion detection circuit 9 CPU 10 Infrared encoder 11 Infrared decoder 12 Control voltage generating circuit 13 Left / right discriminating circuit 14 Switch 15 Television receiver 17 CCD

Continuation of the front page (72) Inventor Toshiya Iinuma 2-5-1-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Haruhiko Murata 2-5-5-1 Keihanhondori, Moriguchi-shi, Osaka Sanyo (56) References JP-A-1-205120 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G02B 27/22 G02F 1/13 505 G03B 35/18

Claims (3)

(57) [Claims] 1. A three-dimensional effect generating glasses comprising a pair of left and right liquid crystal shutters for observing an image in which at least a part displayed on a display moves in a horizontal direction, wherein the pair of liquid crystal shutters according to a moving direction of the image. Wherein the control voltage is selectively applied to one of the light-emitting devices to reduce transmittance. 2. The glasses according to claim 1, wherein the control voltage is proportional to a motion amount of the image. 3. The three-dimensional effect generating glasses according to claim 1, further comprising: an image sensor for photographing the display; and a motion detecting unit for detecting a motion on the display screen from an output of the image sensor.