JP3575901B2 - 3D image display game machine having a forced synchronization circuit for left and right screens - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a game machine capable of experiencing stereoscopic vision by projecting images of two video sources for right eye and left eye onto a lenticular screen, and making each projected image on the lenticular screen enter the right eye and left eye respectively to give parallax More specifically, the present invention relates to a stereoscopic video display game machine having a left and right screen forced synchronization circuit in which the timing of video display for the left eye and video display for the right eye is matched.
[0002]
[Prior art]
Game machines that can experience stereoscopic viewing to give the game a sense of realism and power are becoming popular.
4A and 4B are diagrams showing an example of a game machine that can be viewed stereoscopically. FIG. 4A is a view seen from the side, and FIG. 4B is a view seen from above.
A right-eye projector 24 and a left-eye projector 25 are arranged in the game machine, and images projected from the projectors 24 and 25 are projected onto the lenticular screen 21 by the mirrors 22 and 23.
The players 26 and 27 sit at a predetermined position with respect to the lenticular screen 21, that is, the place where the head (both eyes) is fixed is a predetermined position, and watch the projected image on the screen. The image can be stereoscopically viewed.
[0003]
FIG. 5 is a diagram for explaining the principle of the game machine.
The lenticular screen is configured by arranging a number of kamaboko lenses. The images projected on the lenticular screen from the two right-eye and left-eye liquid crystal projectors are separated into left and right by the polarizing lens action of the kamaboko lens of the lenticular screen. The image of the right-eye liquid crystal projector is incident on the right eye, and the image of the left-eye liquid crystal projector is incident on the left eye.
The parallax due to the shift between the left and right images causes a sense of perspective and enables stereoscopic viewing.
[0004]
[Problems to be solved by the invention]
In the above game machine, when the timings of the images output from the left-eye projector and the right-eye projector and displayed on the lenticular screen do not match, the stereoscopic image is uncomfortable.
By the way, in a conventional game machine, for example, the signal sent from the A screen to the B screen is only coordinate data, so when the display timing error between the A screen and the B screen is large, a time difference of about 0.5 seconds occurs.
An object of the present invention is to provide a stereoscopic video display game machine in which a time error does not occur between a right-eye screen and a left-eye screen display by synchronizing the display screen scanning and game processing timing. There is.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a stereoscopic video display game machine according to the present invention projects two images for a right eye and a left eye on a lenticular screen, and each projected image on the lenticular screen is incident on the right eye and the left eye, respectively. In the game machine which can experience stereoscopic viewing by providing, one of the left-eye and right-eye video processing means has a synchronization signal transmission means and the other has a synchronization signal reception means. An H blank signal is generated, and the V blank signal and the H blank signal are transmitted from the synchronizing signal transmitting means to the synchronizing signal receiving means. During the V blank period, the left eye and right eye video processing means perform game processing. The left and right screen display is synchronized with the V blank signal and the H blank signal.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram for explaining how left-eye and right-eye projectors scan a stereoscopic video display game machine having a left-right screen forced synchronization circuit according to the present invention.
The scanning lines of the left-eye projector 1 and the right-eye projector 2 are matched in timing by a synchronization signal sent from the left-eye printed circuit board (hereinafter referred to as “PCB”) to the right-eye PCB. Scanning is completed as in (1), (2) and (3), and the synchronization signal is sent during V blank of (4). During this V-blank, each PCB is a game processing period.
[0007]
FIG. 2 is a block diagram showing an embodiment of PCB connection of a stereoscopic video display game machine according to the present invention.
A synchronization signal is sent from the left eye PCB 3 to the right eye PCB 4.
FIG. 3 is a circuit block diagram showing details of the circuit of FIG.
The CPUs 7 and 8 perform calculations based on the program and input signals, and send information for creating a three-dimensional image to the polygon control circuits 5 and 6.
The polygon control circuits 5 and 6 are a three-dimensional arithmetic circuit that converts the three-dimensional coordinates of the polygon data into a viewpoint coordinate system with the player as the origin, a perspective conversion circuit that converts the three-dimensional coordinates into two-dimensional coordinates on the screen, A 3D video signal is generated by a clipping circuit for determining whether or not the converted polygon enters the screen and a sorting circuit for rearranging each polygon based on the Z representative value. The left-eye and right-eye projectors 1 and 2 project this image on a lenticular screen.
[0008]
The clock oscillators 9 and 10 oscillate a reference clock for image processing. The polygon control circuits 5 and 6 generate an image based on the reference clock. The polygon control circuit 5 generates a V blank signal and an H blank signal.
The CPU 7 inputs a V blank signal from the polygon control circuit 5 and performs game processing during the V blank period.
The synchronization signal transmission unit 11 transmits the V blank signal and the H blank signal to the synchronization signal reception unit 12 of the right-eye PCB based on the frequency of the reference clock. The synchronization signal receiving unit 12 receives the V blank signal and the H blank signal and inputs them to the polygon control circuit 6 in synchronization with the reference clock of the clock oscillator 10.
The CPU 8 of the right eye PCB 4 receives the V blank signal from the polygon control circuit 6 as described above, and performs the game process during the V blank period synchronized with the CPU 7 of the left eye PCB 3.
[0009]
【The invention's effect】
As described above, according to the present invention, one of the left-eye and right-eye video processing means has a synchronization signal transmission means and the other has a synchronization signal reception means, and one video processing means uses the V blank signal and the H blank. By generating the signal and sending the V blank signal and the H blank signal from the sync signal transmitting means to the sync signal receiving means, the timings of the screen display for the right eye and the left eye can be made to coincide with each other. There is an effect that it does not give a sense of incongruity.
[Brief description of the drawings]
FIG. 1 is a diagram for explaining how left and right eye projectors scan a stereoscopic video display game machine having a left and right screen forced synchronization circuit according to the present invention;
FIG. 2 is a block diagram showing an embodiment of a printed circuit board connection of a stereoscopic video display game machine according to the present invention.
FIG. 3 is a circuit block diagram showing details of the circuit of FIG. 2;
4A and 4B are diagrams illustrating an example of a game machine that can be viewed stereoscopically, in which FIG. 4A is a diagram viewed from the side, and FIG. 4B is a diagram viewed from above.
FIG. 5 is a diagram for explaining the principle of the game machine of FIG. 4;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Left eye projector 2 ... Right eye projector 3 ... Left eye printed circuit board (PCB)
4 ... Right eye printed circuit board (PCB)
5, 6 ... Polygon control circuit 7, 8 ... CPU
9, 10 ... Clock oscillator 11 ... Synchronization signal transmission unit 12 ... Synchronization signal reception unit 21 ... Lenticular screen 22, 23 ... Mirror 24, 25 ... Projector 26, 27 ... Player

Claims (1)

In a game machine that can experience stereoscopic vision by projecting two images for the right eye and left eye onto the lenticular screen, and making each projection image on the lenticular screen enter the right eye and the left eye respectively to give parallax,
One of the left-eye and right-eye video processing means has a synchronization signal transmission means, and the other has a synchronization signal reception means.
Generates a V blanking signal and H blank signal on one image processing means, the sent from the synchronizing signal transmitting means and the V blanking signal and H blank signal to said synchronizing signal receiving means, during the V blanking period, the left-eye and A three-dimensional video display game machine having a left and right screen forced synchronization circuit, wherein game processing is performed by a right eye video processing means, and left and right screen display synchronization is performed by the V blank signal and the H blank signal.

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