JPH08191463A - Stereoscopic image display device and storage device used for it - Google Patents

Abstract

PURPOSE: To display a stereoscopic image with less information quantity and a simple configuration. CONSTITUTION: A program cartridge 4 is loaded removably in a main body device 2. A game program and prescribed data are stored in the cartridge. The main body device reads the game program from the program cartridge and executes it and reads and references the prescribed data to display an OBJ image and a BG image with a parallax to left and right display systems. That is, a planer OBJ image having no parallax in itself is shifted in horizontally opposite directions to each other by a quantity corresponding to the given parallax information and displayed on the left and right display systems. Furthermore, a planer source image having no parallax in itself is shifted in horizontally opposite directions and two left and right BG images are segmented and the segmented left and right BG images are displayed on the same position of the left and right display systems.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereoscopic image display device, and more particularly, to a stereoscopic image display device used for various electronic devices with a display such as an electronic game device, a training device, an educational device, and a guide device. Related stereoscopic image display device.

[0002]

2. Description of the Related Art A conventional electronic game device (for example, a product name "Super Nintendo" manufactured and sold by the applicant of the present application)
Or in "Super NES"), when the main character moves laterally, multiple background images such as mountains and clouds are scrolled in the opposite direction to the main character, and the scroll speed of each is changed according to the distance. , I was trying to give an apparent perspective. That is, by making the moving speed of an object farther than the main character slower than the moving speed of the main character, a sense of perspective is provided (this method is called multiple scrolling). However,
The conventional multiple scroll method has a problem that the perspective is lost when the scroll is stopped.

[0003] On the other hand, various stereoscopic image display devices have been proposed in the past, which allow virtually observing a stereoscopic image (for example, JP-A-6-38246 and JP-A-63-12).
7777, JP-A-63-314990, and JP-A-1-206798). These conventional stereoscopic image display devices perform stereoscopic display by observing two pictures with parallax separately by the left and right eyes of an observer.

[0004]

However, the conventional stereoscopic image display device requires a large amount of information as compared with a device which displays a planar image. This is because it is necessary to use two different pictures with parallax in order to display one image. Therefore, the processing for drawing becomes complicated.

When the stereoscopic image display device as described above is applied to an electronic game device, most of the internal ROM (or CD-ROM) of the program cartridge is occupied to store image information. Will. In particular, recent game contents are becoming more and more complicated, and programs are becoming larger and larger. Therefore, the image information for stereoscopic display cannot be satisfactorily stored with a storage capacity of several tens to several hundreds of megabits.
If a larger capacity storage device were used, the price of the program cartridge would increase dramatically, and the game software package would be unrealistically priced as an amusement product. Further, a high-speed processing device (CPU or the like) is required, and the price of the device itself becomes high.

Therefore, an object of the present invention is to provide an inexpensive stereoscopic image display device capable of displaying a stereoscopic image with a simple structure and a small amount of information. Another object of the present invention is to provide a portable storage device which is used by being connected to an inexpensive electronic game device capable of displaying a stereoscopic image with a simple configuration and a small amount of information.

[0007]

[Means for Solving the Problems] The means adopted in the present invention for solving the above problems will be shown below.
The drawing numbers and reference numbers of the corresponding examples are given in parentheses to the respective means.

The invention according to claim 1 is a stereoscopic image display device for displaying a stereoscopic image with parallax on a display means, and for generating a planar image without parallax, a plurality of screens are displayed. An image data storage unit (41) for storing source image data as a source of the image data, a storage region of at least the number of dots corresponding to the number of pixels of one screen of the display unit, and for displaying the first display image for the left side. A writable / readable first temporary storage means (224, 2241, 2243) for temporarily storing the first display image data, and a storage area of at least a dot number corresponding to the number of pixels of one screen of the display means. Writable / readable second temporary storage means (224, 2242, 2244) for temporarily storing the second display image data for displaying the second display image for the right side, the first and Second display Parallax information storage means (41, 414, 415) for storing parallax information for designating an amount by which the images are laterally displaced from each other, and the planar image data for one image in the source image data is set to the first and the second. When the first and second display images are displayed on the display means after being converted into the second display image data, the first and second display images are laterally displaced from each other by the number of dots corresponding to the parallax. The first display image data based on the parallax information.
Writing control means (22) for writing the second display image data into the second temporary storage means.
1, 223, 225), and the write control means is the first or second
When the writing operation is not performed to the temporary storage means of
Alternatively, read control means (2) for reading out the first or second display image data temporarily stored in the second temporary storage means
21, 223, 225) and supply means (221, 223, 225) for supplying the first and second display image data read by the read control means to the display means (FIGS. 2 and 53). reference).

In order to display a stereoscopic image with parallax on the display means, the invention according to claim 9 provides first and second temporary storage means, a write control means, a read control means, and a supply means. Is a storage device configured to be detachable from the stereoscopic image device, the first temporary storage device being at least one of the display devices.
It is configured such that it includes a storage area for the number of dots corresponding to the number of pixels on the screen, temporarily stores the first display image data for displaying the first display image for the left, and is writable / readable ( 224, 2241, 2243), the second temporary storage means includes at least a storage area of the number of dots corresponding to the number of pixels of one screen of the display means, and a second temporary storage means for displaying the second display image for the right side. Display image data is temporarily stored and is writable / readable (224, 224).
2, 2244), and the writing control means is configured to write the first display image data to the first temporary storage means and the second display image data to the second temporary storage means (221, 223, 225), the read control means is temporarily stored in the first or second temporary storage means when the write control means is not writing to the first or second temporary storage means. Configured to read the first or second display image data (221, 223, 225),
The supply means is configured to supply the first and second display image data read by the reading means to the display means (221, 223, 225), and the storage device (4) is
Image data storage means (41) for storing source image data for a plurality of images in order to generate a planar image without parallax.
2, 413), and parallax information storage means (414, 415) for storing parallax information for designating the amount of lateral displacement of the first and second display images from each other, and writing control of parallax information. A display control program storage means (411) for storing a display control program for giving the means and designating the display coordinate positions of the first and second display images,
As a result, the writing control means, based on the display control program, converts the planar image data for one screen of the source image data stored in the image data storage means into the first and second display image data. And the first and second display images are displayed on the display means, the first and second display images are laterally displaced from each other by the number of bits corresponding to the parallax. Based on the above, the first display image data is written in the first temporary storage means, and the second display image data is written in the second temporary storage means.

[0010]

According to the first aspect of the invention, the image data for one flat image without parallax is converted into the first and second display image data, and then the first display image data is converted into the first temporary image data. The second display image data is written in the storage means, and the second display image data is written in the second temporary storage means. Based on the parallax information, when the first and second display images are displayed on the display unit, the first and second display images are laterally displaced from each other by the number of dots corresponding to the parallax. Write control is performed. The first written in the first and second temporary storage means
The second display image data and the second display image data are alternately read out and supplied to the display means to be displayed as a stereoscopic image with parallax. As described above, since a stereoscopic image having a parallax can be displayed from the image data of one planar image having no parallax, the configuration can be simplified as compared with the conventional stereoscopic image display device, and The amount of data used can be significantly reduced.

According to the ninth aspect of the invention, the image data storage means stores the source image data for a plurality of images in order to generate a planar image with no parallax. Also, the parallax information storage unit stores parallax information for designating an amount by which the first and second display images are laterally displaced from each other. Further, the display control program storage means stores a display control program for giving parallax information to the writing control means and designating display coordinate positions of the first and second display images. The writing control means in the three-dimensional image display device operates based on the display control program, and the first and second plane image data for one screen out of the source image data stored in the image data storage means. So that when the first and second display images are displayed on the display means, the first and second display images are laterally displaced from each other by the number of bits corresponding to the parallax. Based on the parallax information, the first display image data is written in the first temporary storage means, and the second display image data is written in the second temporary storage means.

[0012]

Example When a human sees two pictures with parallax separately by his left and right eyes, he can fuse the two pictures in his brain and feel the depth. The electronic game device according to the embodiments described below is configured to display a stereoscopic image to the observer by utilizing this fusion effect.

Generally speaking, a display screen for a game is roughly composed of two types of components. The first component is a display object, such as a mountain, a river, a forest, a sky, and a building, which has a relatively large display area and has a small movement on the screen. The second component is a display object, such as a hero, an enemy, a bullet, or a missile, which has a relatively narrow display area and moves finely and quickly on the screen. In the electronic game device according to the embodiment described below, the display object belonging to the first component is referred to as a background image (hereinafter referred to as BG), and the second
The display object belonging to the component is called an object (hereinafter referred to as OBJ).

FIG. 1 is a perspective view showing a usage state of an electronic game device according to an embodiment of the present invention. FIG. 2 is a block diagram showing an electrical configuration of the electronic game device shown in FIG. The configuration of this embodiment will be described below with reference to FIGS. 1 and 2.

The electronic game apparatus 1 includes a main unit 2, a support base 3 connected to the bottom of the main unit 2, a program cartridge 4 detachably attached to the main unit 2, and a main unit via a cord 5. 2 and a controller 6 connected to the controller 2. The main body device 2 is supported by a support base 3 on a desk or the like. The player can see the game image by looking into the supported main body device 2.

The program cartridge 4 is a ROM or C
It includes a memory 41 configured by a non-volatile storage medium such as a D-ROM, a backup memory 42 configured by a rewritable storage element such as a RAM, and a battery 43 configured by a lithium battery or the like. The memory 41, the backup memory 42, and the battery 43 are mounted on a substrate 44 having a terminal 45 as shown in FIG. 3, for example. The board 44 is housed in a case formed by an upper housing 46 and a lower housing 47.

Preferably, the controller 6 is equipped with a detachable battery pack. This battery pack has a function of accommodating batteries and spontaneously supplying drive power to the main body device 2. Therefore, the electronic game device according to the present embodiment is provided in a place where the commercial power is not supplied (outdoor,
It can also be used in vehicles. It is also possible to attach a power adapter to the controller 6 and supply external commercial power to the main unit 2.

The main unit 2 includes an image display unit 21 and
It includes an image / audio processor 22 and a transfer port 23.
The image / sound processing device 22 includes a CPU 221, a work memory 222, an image processing IC 223, and an image memory 22.
4, image work memory 225, and voice processing IC 226
And an amplifier 227 and a speaker 228. CPU
The game program 221 executes the game program stored in the memory 41 of the program cartridge 4. Transfer port 23
Are connected to this CPU 221.

The image display unit 21 schematically includes a mirror control circuit 211 and a pair of left and right LED (light emitting diode) units 212L and 212R. A more detailed structure of the image display unit 21 is shown in FIG. As shown in FIG. 4, the image display unit 21 further includes a pair of left and right motor drive / sensor circuits 215L and 215R, and a pair of left and right lens systems 216L and 21F.
6R and a pair of left and right mirrors 217L and 217R,
Left and right pair of voice coil motors 218L and 218R
And In addition, the LED units 212L and 212
R is the LED driver 213L and 213, respectively.
R and LED arrays 214L and 214R.

The image display unit 21 displays one screen with 384 dots in the X-axis direction (horizontal direction to the visual field) and 224 dots in the Y-axis direction (vertical direction to the visual field). Therefore, the LED arrays 214L and 214R
Are each composed of 224 LEDs arranged in a line in the Y-axis direction. The column-shaped light beams emitted from the LED arrays 214L and 214R are respectively reflected by the lens system 2
16L and 216R, and enters the mirrors 217L and 217R.
After being reflected by R, it enters the player's left and right eyes. The mirror control circuit 211 uses the motor drive / sensor circuits 215L and 215R to drive the voice coil motors 218L and 218R. As a result, the mirrors 217L and 217R are respectively fulcrum 219L.
And 219R as a center, and reciprocally rotates at regular intervals. As a result, the row-shaped light beams emitted from each LED array are scanned in the horizontal direction. Also,
The image processing IC 223 is a mirror 217L or 217R.
Image data for 384 columns from the image memory 224 to the LED driver 213L or 213 during one rotation of the
Transfer to R. Therefore, the player, due to the afterimage phenomenon,
An image composed of 384 (horizontal) × 224 (vertical) dots will be recognized.

An image display unit having a display principle similar to that of the image display unit 21 of this embodiment has been proposed by Reflection Technology Co., Ltd. in the United States (JP-A-2-42476, JP-A-2-63379). (Refer to the official gazette), and are sold under the product name of "The Private Eye". However, the display device developed by Reflection Technology Co., Ltd. is mainly for displaying a two-dimensional image, and none of the above-mentioned publications disclose the parallaxing method. In this embodiment, a parallax is generated between the image for the left eye formed by the emitted light of the LED array 214L and the image for the right eye formed by the emitted light of the LED array 214R by a completely new method that has not been used conventionally. By attaching it, a three-dimensional image with depth is displayed.

FIG. 5 is a diagram schematically showing the configuration of the memory 41 in FIG. In FIG. 5, the memory 41 is
Regions 411-419 are included. A game program is stored in the area 411. A BG map is stored in the area 412. In this BG map, data of a character code for BG (background) display (code corresponding to the character data shown below) is described.
A plurality of (for example, tens of thousands) of character data are stored in the area 413. Each character data is 8x8
This is dot bitmap data. By combining this character data, all BG and OB
J (object) is represented. In addition, 1 dot is
It is represented by 2 bits in order to realize 4-gradation display. The area 414 stores world attributes.
As will be described later, the electronic game device of this embodiment has a maximum of 3
One image is formed by overlapping the two worlds. The world attribute is attribute information necessary for drawing each world. In the area 415,
The OBJ attribute is stored. This OBJ attribute is attribute information necessary for drawing the OBJ. A column table is stored in the area 416.
This column table describes timing information for correcting nonuniformity of the dot pitch in the X-axis direction caused by the sine wave vibration of the mirrors 217L and 217R in the image display unit 21. Area 4
17 stores various parameters necessary for executing the game (for example, parameters used in a special display mode such as H-bias or affine). A shutdown program is stored in the area 418. This shutdown program is to prevent the player's fatigue from accumulating after a certain period of time from the start of the game.
It is a program that automatically interrupts the progress of the game. Area 419 stores other data necessary for executing the game.

Although the character code data is described in the BG map in the embodiment, the bit map data may be directly stored in the BG map without using the character code.

FIG. 6 is a diagram schematically showing the configuration of the backup memory 42 shown in FIG. In FIG. 6, the backup memory 42 stores game data (various values indicating the state of the game) at each save point. The backup memory 42 is composed of a RAM and is backed up by a battery 43. Therefore, the game data stored in the backup memory 42 is retained even after the power of the main body device 2 is turned off.

FIG. 7 is a diagram schematically showing the structure of the working memory 222 shown in FIG. In FIG. 7, the working memory 222 stores various values (the number of own machines,
The state of the player, the position of the player, the enemy position, the number of faces, the number of items, etc.) and other data are stored.

FIG. 8 shows an image work memory 2 in FIG.
It is a figure which shows the structure of 25 typically. In FIG. 8, the image work memory 225 includes areas 2251 to 2256. The area 2251 is the area 4 of the memory 41 (see FIG. 5).
It is used as a BGMM (BG map memory) for storing the BG map selectively read out from 12.
Area 2252 is used as a WAM (world attribute memory) for storing world attributes for 32 worlds. Area 2253 is the memory 4
It is used as an OAM (OBJ attribute memory) for storing the OBJ attribute selectively read from the area 1 415. The area 2254 stores the column table read from the area 416 of the memory 41. The area 2255 stores various parameters necessary for executing the game (for example, parameters used in the special display mode such as H-bias and affine).

FIG. 9 shows the image memory 224 in FIG.
It is a figure which shows the structure of. In FIG. 9, the image memory 224 includes areas 2241 to 2247. The area 2241 is used as a left image frame buffer (0). The area 2242 is used as the left image frame buffer (1). The area 2243 is used as the right image frame buffer (0). Area 2244
Is used as the frame buffer (1) for the right image. Each frame buffer has one screen of display data (3
84 × 224 dots, each dot storing display data having a depth of 2 bits. Area 2246 is used as a character RAM. The character RAM stores a maximum of 2048 character data read from the area 413 of the memory 41 (see FIG. 5).
The area 2247 is used as a SAM (serial access memory). The display data stored in each frame buffer is stored in the SAM 2247 in units of four columns (224 × 4 × 2 = 1792 bits each). SAM22
The output unit 47 outputs the accumulated display data to the image display unit 21 in units of 16 bits (8 dots).

In the present embodiment, a simplified parallaxing method is adopted to reduce the amount of information, but nevertheless, in order to obtain an image with a greater sense of depth,
The concept called the world is introduced. As shown in FIG. 10, this world is a virtual surface (W0 to W31) existing from the front to the back on the screen and consisting of 32 layers for controlling drawing. In this embodiment, it is possible to set up to 32 worlds, and it is possible to place either one BG or OBJ consisting of up to 1024 characters on each surface. When the BG is placed, the world can be considered as a layer or cell of the background image. Image processing IC 223
(See FIG. 2) is attribute information (world attributes) set for each world from the innermost world W31.
Is sequentially referred to, and drawing processing of each world is performed on the image memory 224. That is, a maximum of 32 worlds are overlapped to form one image.

Further, in this embodiment, it is possible to determine the display priority order among BG / BG, OBJ / BG and OBJ / OBJ by setting the world. That is, the BG or OBJ placed in the relatively front (smaller number) world is relatively farther (larger number).
The display priority is higher than BG or OBJ on the world. For example, the BG or OBJ placed on the Nth world is overwritten on the BG or OBJ placed on the N + 1th world adjacent in the depth direction. Therefore, BG or OB between adjacent worlds
If there is a portion that overlaps J, B on the front side of the world
Unless G or OBJ has a transparent portion, the BG or OBJ on the world at the back is overlaid by the BG or OBJ on the front world at the overlapping portion and becomes invisible on the screen. In addition, O placed on the same world
Even between BJ and OBJ, the display priority is set according to the writing order of the OBJ attribute on the OAM 2253, but the display priority between worlds has a higher priority.

In this embodiment, BG and OBJ are displayed by different methods in consideration of the difference in properties between BG and OBJ. The display method of BG and OBJ will be described below.

First, the BG display method will be described.
BG is B expanded in BGMM2251 (see FIG. 8).
It is displayed by cutting out a picture of a required area from the G map and pasting the cut-out picture at an arbitrary position on the display screen. From BG map, minimum 1 (horizontal) x 8
It is possible to cut out a picture in the range of 384 (horizontal) × 224 (vertical) at maximum from (vertical) dots in 1-dot units. Also, regarding the coordinates at which the cutout is started, both the X and Y coordinates can be designated in units of one dot.

The BG map, as shown in FIG.
The BG screen for 2 × 512 dots is the basic unit. In this embodiment, the basic unit of this BG is called a segment. One segment is formed by collecting 64 × 64 character blocks of 8 × 8 dots, that is, 4096 character blocks. Note that FIG. 11 schematically shows the BG map, and in the actual BGMM2251, the BG map shown in FIG.
As shown in FIG. 11, the position number (0
The uniform number of each character is stored in this order. This uniform number is a number assigned to each character on the character RAM 2246 (see FIG. 9) of the image memory 224. That is, character RAM
2246 stores 2048 pieces of character data which are selectively transferred from the area 413 of the memory 41 (see FIG. 5), and each character data contains 0 to 204 pieces of character data.
Any character number selected from 7 is assigned. Therefore, on the BG map, these 2
A BG screen is represented using 048 kinds of characters.

In this embodiment, BGMM2251
Has an area capable of storing a BG map for 14 segments. Therefore, the electronic game device of this embodiment can use up to 14 BG maps to create one screen. However, a plurality of segments can be combined and handled as one BG map. The maximum number of segments that can be combined is eight.

Further, in the present embodiment, an image display method called a character system in which a BG map is created by designating a character's uniform number has been shown.
A bitmap method may be used in which a BG map is created by a set of dots.

Next, a display method for OBJ will be described. The OBJ is formed by freely combining character blocks of 8 × 8 dots as shown in FIG. In other words, by properly managing the display coordinates of the selected character block, the selected character block is connected on the display screen. The number of characters that can be used on one display screen is
The maximum is 1024. These 1024 characters are stored in the character RAM 2246 of the image memory 224.
It is used by selecting it from the 2048 characters registered in (see FIG. 9).

Each of the OBJs as display objects is small in size and has a property that a large number of OBJs are discontinuously arranged on the display screen. Therefore, the memory can be efficiently used by managing the coordinate position of each character block required for display and appropriately arranging the character block on the screen. If OBJ is the same as BG,
If a rectangular picture is cut out from the BG map and pasted on the display screen for display, a large number of non-displayed character blocks must be arranged on the map, resulting in wasted memory capacity. However, in this embodiment, the OBJ
Has a basic size of 8 × 8 dots and cannot display an object having a size smaller than that. Also, when displaying an object having a size larger than that, the size increases in units of 8 dots. However, the present invention does not limit the size of the OBJ, and the size of the OBJ may not be 8 × 8 dots.

On the other hand, the BG has a wide display area on the screen, has little change in state, and has the property of being continuously arranged. Therefore, BG prepared in advance
A suitable method is to cut out a rectangular block from the map and paste it at an arbitrary position on the display screen. If it is attempted to manage the coordinates for each display character in the BG as in the case of OBJ, the amount of attribute information increases and the drawing process is overloaded.

FIG. 14 schematically shows the arrangement of OBJ attributes stored in the OAM2253 (see FIG. 8). As described above, the OBJ can be set to a maximum of 4 out of 32 worlds. Therefore, OA
In M2253, as shown in FIG. 14, OBJ attributes are registered in groups of up to four groups according to the surface to be set. The image processing IC 223 (see FIG. 2) is
When the world attribute is searched and the world in which the OBJ is set is found, the OAM 2253 is searched and the OBJ registered therein is drawn. OA
The search for M2253 is performed in order from the OBJ registered in the position with the largest OAM number (0 to 1023), and the corresponding OBJ is drawn. The OBJ drawn later has a higher display priority in the world. The boundaries of the four groups are the OBJ control registers SPT0, SP.
It is designated by T1, SPT2, SPT3 (not shown). In the OBJ control register SPTx (x = 0 to 3), the OAM number (0 to 1023) at the lowest priority position (highest address) in each group is set. The OBJ control register SPT3 contains the OA
When the M number 1023 is set, there is no unused area in the OAM.

FIG. 15 is a diagram showing the structure of the OBJ attribute written in the OAM 2253 for one character block. The OBJ attribute is composed of 4 words (1 word includes 2 bytes and 16 bits). In FIG. 15, JX is an integer with a 16-bit code (positive or negative) and indicates the display position (-7 to 383) of the OBJ in the X-axis direction on the display screen. JY is an integer with a 16-bit code and indicates the display position (-7 to 223) of the OBJ in the Y-axis direction on the display screen. JP is a 14-bit signed integer and indicates the amount of parallax (-256 to 255) in the coordinate system in which OBJ is displayed. JLON
Is a 1-bit flag and indicates whether or not to display the OBJ on the left screen. JRON is a 1-bit flag and indicates whether or not to display the OBJ on the right screen. JCA is an 11-bit integer and indicates a character number from 0 to 2047. The other attribute information in FIG. 15 is not directly related to the present invention, and therefore its explanation is omitted.

FIG. 16 shows each frame buffer 2241 to
2244 (see FIG. 9) or the OBJ display coordinate system on the display screen. The OBJ display coordinate system is (0,
0) to (383, 223). The origin (0,0) is selected at the uppermost left end of the display screen.
On the other hand, the space represented by JX and JY of the OBJ attribute is from (-7, -7) to (383, 223).
Has a range of. This is because, for example, when the hero appears from the left end of the screen and walks to the right, it is necessary to first display the contents of the character on the left end of the screen so that the contents gradually appear. The same applies when the hero appears from the top of the screen and walks to the bottom. The image processing IC 223 of FIG. 2 reads character data corresponding to JCA (character number) in the OBJ attribute of FIG. 15 from the character RAM of FIG. 9, and reads the read character data for the left image and / or the right image. Predetermined position on the frame buffer (JX, J
Draw at the position specified by Y and JP). At this time, the image processing IC 223 subtracts or adds the value of the parallax amount JP from JX to display X on the left and right screens.
Coordinates (ie X to draw in the left and right framebuffers)
Coordinates). On the other hand, for JY, the parallax amount JP
Is neither subtracted nor added. The above can be expressed in more detail by using an equation as follows. JXL = JX-JP (JXL = X coordinate on left screen) JXR = JX + JP (JXR = X coordinate on right screen) JYL = JYR = JY (JYR, JYL = Y coordinate on left and right screens)

FIG. 17 is a diagram showing the structure of one world of the world attribute written in the WAM2252 of FIG. The structure of world attributes will be described below with reference to FIG. As shown in FIG. 17, each world attribute is set on a 16-word attribute table. 32 worlds W0 to W31 can be set in the WAM2252 (see FIG. 10). Depending on the setting of the world attribute, it is possible to draw BG, draw OBJ, draw BG or OBJ on both left and right screens, or draw on either one. Each world has 1: 1 BG (BG world) 2: 1 or more and 1024 or less OBJs (OBJ world) 3: No allocation (dummy world: nothing displayed) 4: Control world Either (End World) can be set. As described above, the image processing IC 223 of FIG. 2 has the functions of W31 → W30 → W29 ...
The set world is drawn in order from W0 and the image existing at the back of the screen. The world with the highest display priority is W0, followed by W1, W2 ... W31 in order. When it is not necessary to use all the worlds by software, it is possible to efficiently draw only the necessary worlds by setting the control worlds. For example, when using 3 worlds, the following settings can be made. W31, W30, W29 → Used as a world for drawing W28 → Set end world W31: Far view W30: Middle view (intermediate view between far view and near view) W29: Near view If set as above, according to the priority of the world Since the middle-view image is displayed in front of the distant-view image and the near-view image is displayed in front of the middle-view image, the images can be overlaid and drawn in the priority order according to the perspective. Further, since the image processing IC 223 skips the processing of W28 to W0, the processing speed becomes faster. Of course, if there is no problem in processing speed, the three worlds can be set on any world. At this time, a dummy world is set in the unused world.

In FIG. 17, the world attribute is attribute information G for defining where the BG image extracted from the BG map is displayed on the display screen.
Including X, GY, GP. GX is an integer with a 16-bit code (positive or negative) and indicates a position (0 to 383) in the X axis direction in the coordinate system in which BG is displayed. Also,
GY is a 16-bit signed integer and indicates a position (0 to 223) in the Y-axis direction in the coordinate system in which BG is displayed. GP is a 16-bit signed integer, and B
Parallax amount in the coordinate system in which G is displayed (-256 to 255)
Is shown. The image processing IC 223 calculates the coordinate position to be actually displayed on the display screen by the calculation of X coordinate for left eye (dstXL) = GX-GP X coordinate for right eye (dstXR) = GX + GP.

Further, the world attribute includes attribute information MX, MY, MP for defining the start position of the image data taken out from the BG map. MX is an integer with a 16-bit code (positive or negative) and indicates the position (0 to 4095) in the X axis direction in the source coordinate system of BG. MY is a 16-bit signed integer,
Position in the Y-axis direction in the BG source coordinate system (0 to 409)
5) is shown. MP is a 16-bit signed integer, and is the amount of parallax (-256 to 2) in the BG source coordinate system.
55) is shown. The image processing IC 223 is actually B
The coordinate position of the data extracted from the G map is calculated by the calculation of Y coordinate for left eye (srcYL) = MY-MP Y coordinate for right eye (srcYR) = MY + MP.

Further, the world attribute includes attribute information W and H for defining the BG size (window size) on the display screen. W is B on the display screen
The number of bits of G in the X-axis direction is shown. H indicates the number of bits in the Y-axis direction of BG on the display screen. For the left eye, from (srcXL, MY) to (srcXL + W,
BG is cut out in the range of (MY + H), and (d
It is displayed from the position of stXL, GY). For the right eye, from (srcXR, MY) to (srcXR + W, MY
BG is cut out in the range of + H), and (dst
It is displayed from the position of (XR, GY).

Furthermore, the world attribute is BG
The BG screen cut out from the map is drawn in either the left image frame buffer (2241 or 2242) or the right image frame buffer (2243 or 2244), or both, that is, in either the left eye or the right eye. It includes attribute information LON, RON for defining whether to display or both. Each of these LON and RON is a 1-bit flag and indicates the following states according to the set value. LON = 0: Do not draw in frame buffer for left image LON = 1: Draw in frame buffer for left image RON = 0: Do not draw in frame buffer for right image RON = 1: Draw in frame buffer for right image When both LON and RON are 0, the world is not drawn.

Furthermore, the world attribute is BG
It includes attribute information BGM for defining the display mode of the screen. This BGM consists of 2 bits and represents the following four modes according to the set value. BGM = 00 Normal BG display mode BGM = 01 H-bias BG display mode BGM = 10 Affine BG display mode BGM = 11 OBJ display mode Normal BG display mode is a mode for displaying a normal BG image. The H-bias BG display mode is a mode for displaying a BG image with each line in the X-axis direction being offset by one line. The affine BG display mode is a mode for enlarging / reducing / rotating a BG image for display. The OBJ display mode is a mode for displaying OBJ. In this case, the image processing IC 223 is
Refer to the OBJ attribute set in M2253.

Further, the world attribute includes attribute information SCX and SCY for defining the screen size of the target BG map. The SCX is composed of 2 bits, and defines the size of the BG map in the X-axis direction as follows according to the set value. Also, SCY is
It is composed of 2 bits and defines the size of the BG map in the Y-axis direction as follows according to the set value. SCX: Screen size X SCX = 00 512 dots (1 segment) = 01 1024 dots (2 segments) = 10 2048 dots (4 segments) = 11 4096 dots (8 segments) SCY: Screen size Y SCY = 00 512 dots (1 Segment) = 01 1024 dots (2 segments) = 10 2048 dots (4 segments) = 11 4096 dots (8 segments) By the combination of the above SCX and SCY, the size of one BG map combined in the range of 1 to 8 segments is Stipulated.

Further, the world attribute includes attribute information END for defining whether or not the world is the final world (end world). This END
Is a 1-bit flag, and depending on the set value,
The following two states are defined. END = 0 The world processed this time is not the final world END = 1 The world processed this time is the final world

Further, the world attribute includes 4-bit attribute information BGMAP_BASE. This BG
MAP_BASE contains the base address of the BG map,
That is, the number (0 to 13) of the top segment of the target BG map is set.

Further, the world attribute includes attribute information PARAM_BASE. This attribute information PAR
AM_BASE is set to the base address of the parameter table that stores the parameters used in the H-bias BG display mode and the affine BG display mode.

Since the other attribute information in FIG. 17 has no direct relation to the present invention, the description thereof will be omitted.

The picture registered on the BG map is cut out and drawn in an arbitrary size (1 × 8 to 384 × 224) from an arbitrary place by setting the world attribute. When the normal BG display mode is set in the attribute information BGM, the parallax amount MP is referred to when cutting out a picture from the BG map, in addition to the parallax amount GP on the display screen. The parallax amount MP takes into consideration that the range of the picture seen from the left eye and the right eye when the BG to be cut out is regarded as a window is different. As shown in FIG. 18, from the BG map, with respect to the cutout start point (MX, MY),
A position (MX ± MP, M that is displaced by the parallax amount MP in the X-axis direction)
The picture is cut out from Y). Also, on the display screen, B
The picture cut out from the G map is the display start point (G
(X, GY) is displayed after being shifted by the parallax amount GP in the X-axis direction.

Here, in the area 412 of the memory 41, a large number of BG maps necessary for constituting all the BGs appearing in the game are stored. Then, when the display content changes greatly as the game progresses (for example, when the stage or the scene changes), the BG map (maximum 1) required for the BG to be displayed on the stage or the scene.
4 segments) are selected from the area 412 and the BGM is selected.
Transferred to M2251.

Further, the area 414 of the memory 41 stores a plurality of world attributes necessary for drawing the respective initial screens of the stage or the scene whose display contents greatly change. Then, when the stage or scene is switched, the world attribute necessary for drawing the initial screen of the stage or scene is selected from the area 414 and transferred to the BGMM2251. The world attribute set in the BGMM2251 is until the next stage or scene switching comes.
It is rewritten and used by the CPU 221 according to the game program.

The present embodiment employs two types of novel parallax providing methods that have not been used in the past in order to display a stereoscopic image with a small amount of information. Basically, the amount of information is reduced by generating two parallaxed pictures from one picture. The new parallax adding method used in this embodiment will be described below.

First, a parallax providing method for OBJ will be described. Generally speaking, the OBJ displays parallax by displaying the same picture on the left and right screens in the opposite direction along the X axis (horizontal) with a shift corresponding to the parallax amount JP. To be

Now, using four characters having dot patterns as shown in FIGS.
BJ shall be displayed. Each character (a) ~
Character number (JCA) 2 is shown in (d).
0, 8, 10, 1023 are assigned. Also,
It is assumed that each of the characters (a) to (d) is set by the OBJ attribute as shown on the right side of the dot pattern. In the case of FIG. 19, since the parallax amount JP of each character is 0, each character is displayed from the position defined by (JX, JY) on the display screen. Therefore, the OBJ as shown in FIG. 20 is displayed on the display screen.

On the other hand, as shown in FIGS. 21A to 21D, when the parallax is set for each character, the display position of each character in the X-axis direction is (JX-
JP) is shifted and displayed (see FIG. 22 (a)),
On the right screen, (JX + JP) is shifted and displayed (see FIG. 22B). In this way, on the left and right screens,
By shifting the display position in the X-axis direction in the opposite direction by the distance corresponding to the parallax amount JP, an object appears to pop out or appears to be far away. FIG. 22 (a),
When the images shown in (b) are viewed with the left and right eyes, respectively, FIG.
As shown in FIG. 3, the block with the character number 20 from the front, the block with the character number 8 and the character number 10
Can be seen in the order of the block No. and the block with the character number 1023.

To describe the relationship between the parallax amount and the perspective in more detail, when the parallax amount is 0, the player feels that the OBJ exists on the reference screen, as shown in FIG. If the parallax amount is positive, the
As shown in, the OBJ feels as if it exists in front of the reference screen. When the amount of parallax is negative, the player feels that the OBJ exists behind the reference screen, as shown in FIG. Therefore, when displaying a close view, the amount of parallax (the amount by which the left and right images are displaced) is made positive, and the amount of parallax is incremented. When displaying a distant view, the amount of parallax is made negative and the amount of parallax is decremented.

Next, a parallax providing method for BG will be described. In this embodiment, two types of parallaxing methods are used for BG.

The first parallaxing method for BG is OB
It is a parallax method similar to J. That is, one picture cut out from the BG map is displayed on the left and right screens in the opposite direction along the X-axis (horizontal) while being shifted by a distance corresponding to the parallax amount GP (see FIG. 17). Due to this, parallax is added.

The second parallaxing method for BG performs parallaxing in a manner opposite to that of the first parallaxing method. That is, the left and right pictures are displayed on the BG map as the parallax amount M.
Parallax is provided by shifting the image corresponding to P by shifting it in the opposite direction along the X-axis, and displaying the two cut-out pictures at the same position on the left and right screens (see FIG. 27). In this case, the parallax amount GP on the screen may be set to 0. This second parallax method is used, for example, when displaying a distant object seen through a window. As shown in FIG. 27, the distant view seen through the window should have a different range when viewed with the left eye and when viewed with the right eye. However, this second parallaxing method is effective when the distant object seen from the window is larger than the window frame size, and when the displayed object is smaller than the window frame size, the coordinates on the display side are shifted. The first parallax adding method may be used. Further, since the upper, lower, left, and right edges of the display screen can be considered as windows, even when a full size (384 × 224 dots) BG screen is cut out from the BG map and displayed, the second parallax method is It is valid.

Furthermore, parallax may be performed by using both the first parallax applying method and the second parallax applying method. Such a parallaxing method is used, for example, when displaying a distant object seen through a window and further displaying the window itself in the front or back direction.

FIG. 28 is a flow chart showing the drawing operation in this embodiment. 29 to 31 are flowcharts showing details of each subroutine step in FIG. 28. Hereinafter, the drawing operation executed by the image / sound processing device 22 of the present embodiment will be described with reference to FIGS. 28 to 31.

First, the CPU 221 transfers or rewrites data necessary for drawing (step S101).
That is, the CPU 221 searches the memory 41 in the program cartridge 4 when the power is turned on or when the stage or the scene in which the display content changes greatly is searched for the necessary BG map, world attribute, H-bias parameter, and affine parameter. Are transferred to the image work memory 225, and necessary character data and the like are transferred to the image memory 224. If the displayed content does not change significantly from the previous screen, the CPU 221
Rewrites the world attribute, OBJ attribute, H-bias parameter, affine parameter, etc. stored in the image work memory 225 according to the game program stored in the memory 41.

Next, the image processing IC 223 makes the counter n
Is set to 31, and the counter x is set to 1 (step S102). The counter n is a counter that counts the number of the world to be processed, and is also configured to count negative values. The counter x is a counter that counts the order of the OBJ world to be processed. Next, the image processing IC 223 determines whether the count value of the counter n is less than 0. When the count value of the counter n is 0 or more, the image processing IC 223 sets the world attribute of the world Wn corresponding to the count value of the counter n to
Read out from the image work memory 225 (step S10)
5).

Next, the image processing IC 223 determines whether or not the world Wn to be processed this time is the end world (step S106). This determination is based on the attribute information END included in the world attribute (see FIG. 17).
Is based on. When the world Wn is not the end world, the image processing IC 223 determines that the world Wn is a dummy world (a world not displayed; LON =
0, RON = 0) is determined (step S
107). If the world Wn is a dummy world,
The image processing IC 223 subtracts 1 from the count value of the counter n (step S108), and returns to the operation of step S104. On the other hand, when the world Wn is neither the end world nor the dummy world, the image processing IC 223 determines whether the world Wn is an OBJ world, a normal BG world, or an H-bias BG world (steps S109 to S111). This determination is made based on the attribute information BGM included in the world attribute.

First, the processing when the world Wn is a normal BG world will be described. In this case, the image processing IC 223 draws the normal BG based on various attribute information set in the world attribute (step S112). The details of the subroutine process of step S112 are shown in FIG. Further, FIG. 18 schematically shows the principle of the drawing work. 29 and 18, the image processing IC
223 is a left and right frame buffer (see FIG. 9) based on the attribute information GX, GY, GP (X coordinate position, Y coordinate position, parallax amount on the display coordinate system of BG) set in the world attribute. The upper drawing start position is calculated (step S201). Next, the image processing IC 223
Attribute information M set in the world attribute
Based on X, MY, MP (X coordinate position, Y coordinate position on the BG source coordinate system, parallax amount), a BG cutout starting position from the BG map is calculated (step S20).
2). Next, the image processing IC 223 uses the BG map based on the attribute information W and H (dot size in the X-axis direction and dot size in the Y-axis direction on the BG source coordinate system) set in the world attribute. The BG cutout size is calculated (step S203). Next, the image processing IC 223 uses the BGMM based on the attribute information BGMAP_BASE set in the world attribute.
A required BG map is selected from the plurality of BG maps in 2251 (see FIG. 8) (step S204). Next, the image processing IC 223 cuts out the BG data (the character number at this stage) from the predetermined range (the range obtained by the calculation of the above steps S202 and S203) on the selected BG map (step S2).
05). Next, the image processing IC 223 reads the character data corresponding to the cut out character number from the character RAM 2246 (see FIG. 9), and the frame buffers 2241 and 2243 (or 2242 and 224).
4) Drawing is performed in a predetermined area above (the area having the position calculated in step S201 as the drawing start position) (step S206).

Next, the processing when the world Wn is the OBJ world will be described. In this case, the image processing I
The C223 refers to the OBJ attribute of the group corresponding to the count value of the counter x from the OAM2253 (see FIG. 8) (step S113; see FIG. 14). Next, the image processing IC 223 causes the character number JCA set in the referenced OBJ attribute (see FIG. 15).
Based on the above, the corresponding character data is read from the character RAM 2246, and the read character data is stored in a predetermined area (JX, J) on the frame buffers 2241 and 2243 (or 2242 and 2244).
(A region whose drawing start position is the position defined by Y and JP)
Is drawn (step S114). Next, image processing IC
223 adds 1 to the count value of the counter x (step S115).

Next, the processing when the world Wn is the H-bias BG world will be described. in this case,
The image processing IC 223 draws the H-bias BG based on various attribute information set in the world attribute and the H-bias parameter stored in the area 2255 of the image work memory 225 (step S).
116). Details of the subroutine process of step S116 are shown in FIG. Referring to FIG. 30, the image processing IC 223 calculates drawing start positions on the left and right frame buffers (see FIG. 9) based on the attribute information GX, GY, GP set in the world attribute (step S301). ). Next, the image processing IC 223
Calculates the BG cutout start position from the BG map based on the attribute information MX, MY, MP set in the world attribute (step S302). Next, the image processing IC 223 reads out a necessary H-bias parameter from the area 2255 of the image work memory 225 based on the attribute information PARAM_BASE set in the world attribute (step S30).
3). Next, the image processing IC 223 sets B based on the attribute information W and H set in the world attribute.
The cutout size of BG from the G map is calculated (step S304).

Next, the image processing IC 223 recalculates the read position in the X-axis direction from the BG map based on the H-bias parameter read in step S303 (step S305). Here, the X coordinate actually referred to when reading the source data of the BG map is set to B
If GXL, BGXR, the H-bias parameter for the left screen is HOFSTR, and the H-bias parameter for the right screen is HOFSTR, then in step S305, the calculation process of BGXL = MX-MP + HOFSTL BGXR = MX + MP + HOFSTR is performed. The H-bias parameters HOFSTR and HOFSTR are 16-bit signed integers (-512 to -512) indicating the offset amount in the X-axis direction.
511). In the present embodiment, since it is possible to offset each horizontal line, the H-bias parameter is B
It is necessary to have G horizontal lines. For example,
When a full size BG is opened, it is necessary to set a parameter table of a size of 224 × 2 = 448 words in the area of the image work memory 225.

Next, the image processing IC 223 sends the attribute information BGMAP_BAS set to the world attribute.
Based on E, a required BG map is selected from the plurality of BG maps in the BGMM2251 (see FIG. 8) (step S306). Next, the image processing IC 223 cuts out the BG data (the character number at this stage) from the predetermined range (the range obtained by the calculation of the above steps S302, S304, S305) on the selected BG map (step. S307). At this time, B
G data is the original read position in the X-axis direction (MX ± M
From P), it is read from a position deviated by the value of HOFSTR, HOFSTR. Next, the image processing IC 223 reads the character data corresponding to the cut out character number from the character RAM 2246 (see FIG. 9), and the frame buffers 2241 and 2243 (or 2).
242, 2244) on a predetermined area (step S3 above).
Drawing is performed in the area where the position calculated in 01 is the drawing start position) (step S308).

Next, the processing when the world Wn is neither an OBJ world, a normal BG world, nor an H-bias BG world, that is, an affine BG world will be described. In this case, the image processing I
C223 is an area 2255 of the image work memory 225 and various attribute information set in the world attribute.
The drawing operation of the affine BG is performed based on the affine parameters stored in (step S117). Details of the subroutine processing of step S117 are shown in FIG. With reference to FIG. 31, the image processing IC 223
Calculates the drawing start position on the left and right frame buffers based on the attribute information GX, GY, GP set in the world attribute (step S401). Next, the image processing IC 223 reads out necessary affine parameters from the area 2255 of the image work memory 225 based on the attribute information PARAM_BASE set in the world attribute (step S402).
Next, the image processing IC 223 calculates the display size of the BG from the BG map based on the attribute information W and H set in the world attribute (step S40).
3). Next, the image processing IC 223 calculates the cutout position on the BG map for each dot based on the read affine parameters (step S404). Therefore, in this affine BG drawing mode, the attribute information MX, MY, MP in the world attribute is not used.

Next, the image processing IC 223 sends the attribute information BGMAP_BAS set in the world attribute.
A required BG map is selected from a plurality of BG maps in the BGMM2251 based on E (step S40).
5). Next, the image processing IC 223 cuts out the BG data (the character number at this stage) from the predetermined range (the range obtained by the calculation of the above step S404) on the selected BG map (step S40).
6). Next, the image processing IC 223 outputs the character data corresponding to the cut out character number to the character R.
Read from AM2246, frame buffer 224
Drawing is performed in a predetermined area on the 1, 2, 243 (or 2, 242, 2244) (the area calculated in step S401 as the drawing start position and the area determined in step S403) (step S407).

Character data is composed of two sets of frame buffers (a set of 2241 and 2243 and a set of 2242 and 2244).
Are drawn alternately. While the character data is being drawn for one set, the display image data stored in the other set is read out, and the SAM 224
It is given to the LED units 212L and 212R via 7 and displayed.

As described above, the present embodiment is a dual scanner system (a system that can be seen by both eyes), and the one-dimensional LED arrays 214L and 214R (respectively the LED's) are appropriately synchronized with the vibrations of the mirrors 217L and 217R. 224 dots are arranged in a line in a vertical direction), and this is made visible to the player through the mirrors 217L and 217R. By doing so, the player looks as if one screen was formed on each of the left and right display systems due to the afterimage effect of the eyes. In order to give the game a stereoscopic effect, different screens with parallax (screens with different data on the left and right) must be displayed on the left and right display systems. However, it is difficult to simultaneously transfer different screen data to the left and right display systems by one image processing IC 223 from the viewpoint of processing capability. Further, when different images are simultaneously displayed on the left and right display systems, the peak power consumption increases, and the maximum power consumption increases. Therefore,
In the present embodiment, the display periods of the left and right display systems are shifted from each other so as not to overlap with each other in consideration of reduction of the load on the image processing IC and dispersion of peak power consumption.

32 and 33 show the relationship between the vibration phase of the mirrors and the display timing in the left and right display systems, respectively. When the vibration frequency of each mirror 217L and 217R is 50 Hz (1 cycle is 20 ms), the horizontal axis is time, and the vertical axis is the vibration angle, the movements of the mirrors 217L and 217R are as shown in FIGS. 32 and 33, respectively.
The sinusoidal vibration is as shown in. The left and right mirrors vibrate in synchronization with each other, but their phases are shifted by 180 ° so that the left and right screen display periods do not overlap. When one cycle of 20 ms is divided into 8 equal parts, the movement of the mirror and the sine wave correspond to the numbers 1 to 9 in FIGS. 32 and 33. The angular velocity of the mirror is not constant when it vibrates by repeating the movement from 1 to 9. However, when moving from 4 to 6 or 8 to (2), the angular velocity is relatively stable. In order to reduce the distortion around the left and right edges of the screen, the LED array is displayed in the period from 4 to 6 in the left display system and from 8 to (2) in the right display system.
Up to the period. The display period is 1 / cycle
Since it hits 4, it takes about 5 ms. The number of dots in the LED array is 224. LED array 2 during the above display period
Since 14L and 214R are turned on 384 times at appropriate timing, the left and right display systems have a width of 384 × a height of 224 = 8.
A 6016-dot screen is created. This screen is called an image screen.

FIG. 34 shows, as an example, the position where the image screen is projected on the left display system. In FIG. 34, the numbers 4, 5, and 6 correspond to the position numbers in FIG. As described above, the LED array 214L is turned on when the angular velocity of the mirror 217L is relatively stable, so that the image screen is scanned when the mirror 217L moves from 4 to 6. When the position of the mirror 217L is 4, the LED array 214L
Light passes through the lens 216L at the position 4 ', and draws an image screen at the position 4 ". The mirror 217L.
The same is true when is moved to the 5 and 6 positions.
The image screen is drawn to 6 ". Therefore, the scanning direction of the screen is from left to right. Since each person has different diopter (so-called visual acuity), the lens 216 is used.
It is necessary to move L to focus the screen. This is called diopter adjustment. There are several types of positions for the diopter adjustment lens. For example, if the lens 216L is moved to the -1D position, the image screen will move to about 1
It looks ahead m. Although FIG. 34 shows the display system on the left side, the same applies to the display system on the right side, and the scanning direction of the screen is from left to right.

The mirrors 217L and 217R are respectively
It is vibrated by the motor drive / sensor circuits 215L and 215R. Further, the motor drive / sensor circuit 215 determines the period, amplitude, phase, offset, etc. of the vibration of the mirror.
It can be detected by the signal output from L, 215R. This signal is called a flag signal, and is generated when the flag 71L (or 71R) passes through the photo interrupter 72L (or 72R) as shown in FIG. Based on this flag signal, the mirror control circuit 211 performs servo control (correction and stabilization of mirror vibration) for forming a stable screen, and causes the image processing IC 223 to display a screen display timing (in FIG. 32, Position 4 is the screen display start timing).

The flag 71L (or 71R) is shown in FIG.
As shown in FIG. 6, it is a small piece made of resin attached to the mirror 217L (or 217R) for shielding the photo interrupter. The width of the flag is selected so that the period during which the flag shields the photo interrupter from light and the screen display period match. As a result, from the output waveform of the photo interrupter, the vibration frequency of the mirror, the amplitude disturbance, the offset, the phase of the left and right mirrors, and the screen display start timing can be detected.

The photo interrupter 72L (or 72
Inside the R), as shown in FIG. 37, two sets of interrupters 73 and 74 are provided. Each interrupter is arranged so as to be opposed to each other with a predetermined interval, and includes a set of a light emitting element and a light receiving element, and when the flag passes between the light emitting element and the light receiving element, the light receiving element is shielded from light, Its output falls from high level to low level. The detection output of one of the interrupters (flag interrupter) 73 is used to detect the position of the flag,
The detection output of the other interrupter (direction interrupter) 74 is used to detect the moving direction of the flag.
Therefore, the interval between the interrupters 73 and 74 is selected to be narrower than the width of the flag.

38 and 39 show the relationship between the output state of the photo interrupter and the moving direction of the flag. Note that FIG. 38 shows the direction detection when the output of the flag interrupter 73 falls, and FIG. 39 shows the direction detection when the output of the flag interrupter 73 rises. As shown in FIG. 38 (a), when the output of the flag interrupter 73 falls while the output of the direction interrupter 74 is at the low level, it is determined that the moving direction of the flag is from left to right. Further, as shown in FIG. 38 (b), when the output of the flag interrupter 73 falls while the output of the direction interrupter 74 is at the high level,
It is determined that the moving direction of the flag is from right to left. In addition, as shown in FIG. 39 (a), the direction interrupter 74
Flag output is high level, the flag interrupter 73
When the output of the flag rises, it is determined that the moving direction of the flag is from left to right. Further, as shown in FIG. 39 (b),
When the output of the flag interrupter 73 rises while the output of the direction interrupter 74 is at a low level, it is determined that the moving direction of the flag is from right to left.

As described above, in the present embodiment, the screen display is performed during the period in which the angular velocity of the mirror is stable. However,
Strictly speaking, the angular velocity (scan velocity) of the mirror is not constant even within this period. Therefore, correction is necessary.

One vertical column of the image screen is called a column, and there are 384 columns in total. The column width (column interval) on the image screen depends on the lighting timing of the LED. FIG. 40 shows a state in which the character "D" is displayed at the center and the end of the image screen.
If the lighting timing pitch of the LED array is set to be the same in the center and the end of the image screen, it looks like it is contracting in the lateral direction at the end, or conversely it seems to extend in the lateral direction at the center. To do. This is because although the angular velocity (scan speed) of 5 is faster than the angular velocity (scan speed) of the mirror when 4 and 6,
This is because the lighting timing of is performed at the same timing pitch. That is, in FIG. 40, the lighting timing pitch P of the LED array in the central portion of the image screen is
PC is equal to the timing pitch PPE at the end.

At the center and the end of the image screen,
To display figures and characters with the same column width without distortion,
The LED light emission timing pitch must be changed according to the scanning speed. That is, as shown in FIG. 41, it is necessary to correct the LED light emission timing pitch PPC to be shorter at the central portion of the image screen and to be longer at the end portion. By doing this, the width of each column is scanned equally. Note that L
The ED emission pulse width (PWC, PWE) is constant for the same brightness in order to make the brightness of the edge and center of the image screen uniform.

The table storing the timing data for correcting the LED lighting timing pitch is called a column table. This column table is stored in the memory 41
Area 416 (see FIG. 5) of the image work memory 225 in the main unit when the power is turned on.
54 is transferred according to the program. Image processing IC2
Reference numeral 23 refers to the column table expanded in the image work memory 225 to control the LED lighting timing.
The start address of the column table is transferred as 8-bit serial data from the mirror control circuit 211 that controls the movement of the mirror.

The column table has not only the timing data for 384 columns, but also the timing data for 68 columns × 2, assuming that the mirror has an offset or is subject to disturbance. In this embodiment, the LED lighting timing pitch can be set every four columns. Therefore, if 4 columns are 1 entry,
The number of entries in the column table is 17 + 96 + 17 = 1
There are 30 (= 520 columns).

FIG. 42 shows the arrangement of column tables on the image work memory 225. As shown in FIG. 42, the column table is allocated on the image work memory 225 as a 512-word data array. The image processing IC 223 receives the column table reference start address CTA from the mirror control circuit 211. The column table reference start address CTA is 8-bit data corresponding to each of the left eye and the right eye, at the start of display on the left screen (at the rising edge of L_SYNC).
Are automatically transferred from the mirror control circuit 211. Transferred column table reference start address C
TA is set in the register 223a (see FIG. 43) in the image processing IC 223. In FIG. 43, CT
A_L is a left column table reference start address, and CTA_R is a right column table reference start address. The image processing IC 223 uses the internal register 223.
Column table reference start address CTA set in a
The timing data COLUMN_LENGTH from the corresponding entry in the column table,
It is set in the internal register 223b (see FIG. 44). The timing data COLUMN_LENGTH is a numerical value that defines one column time with a resolution of 200 ns. The timing data read from the column table is 4
Performed once on the column. Also, in one display frame period,
96 (= 384/4) for left eye and right eye
192 times in total.

In FIG. 42, for example, if the timing data is read from the address A (the address indicated by the column table reference start address CTA_L for the left eye) of the left eye column table at the start of the left screen display, then,
By byte address, (A-2) address, (A-4) address,
The timing data is sequentially read from. As described above, this reading is performed once every four column times and 96 (= 384) for each of the left eye and the right eye in one display frame period.
/ 4) times. The final read address on the left screen is
(A-95 × 2) = (A-190) address. Similarly, from the right eye column table, addresses B to (B-19
The timing data at address 0) is read.

In the present embodiment, the timing data in the column table is rewritten to a special data string in accordance with an instruction from the game program, so that a special display, for example, to make the display screen wavy, can be performed. I also have.

Next, the display operation in this embodiment will be described. When the main body device 2 is powered on via the controller 6, the CPU 221 starts the game program,
The column table stored in the memory 41 of the program cartridge 4 is stored in the area 225 of the image work memory 225.
Transfer to 4. Assuming that the game has already started, the left and right mirrors 217L and 217R vibrate in a cycle of 20 ms in synchronization with a synchronization clock FCLK generated from an internal oscillator (not shown) of the mirror control circuit 211. It is in. At this time, the flags 71L and 71R pass through the photointerrupters 72L and 72R (see FIG. 35), so that the photointerrupters 72L and 72R respectively send 2-bit flag signals to the motor drive / sensor circuits 215L and 215R. Is given. Of the 2-bit flag signal, one bit is the output signal of the flag interrupter 73, and the other bit is the output signal of the direction interrupter 74 (see FIG. 37). The motor drive / sensor circuits 215L and 215R shape the waveform of the applied flag signal and then output it to the mirror control circuit 211.

The mirror control circuit 211 determines the moving direction of the flag based on the combination of 2-bit logic states included in the flag signal (see FIGS. 38 and 39). Further, the mirror control circuit 211 detects the start timing of the display period of the left screen (see FIG. 32) and the start timing of the display period of the right screen (see FIG. 33) in consideration of this determination result. At this time, the mirror control circuit 211 raises the left display start signal L_SYNC in response to the detection of the start timing of the display period of the left screen, and outputs the right display start signal R_SYNC in response to the detection of the start timing of the display period of the right screen. Launch. In addition, the mirror control circuit 211 generates lower 8-bit data CTA (CTA_L and CTA_R) of the column table reference start address in response to the detection of the start timing of the display period of the left and right screens.

Now, a method of generating the column table reference start address CTA will be described. FIG. 45 shows the relationship between the vibration phase of the mirror and the output signal of the flag interrupter 73 (hereinafter referred to as the flag interrupter signal) when the mirror has no offset. Also, in FIG.
Shows the relationship between the vibration phase of the mirror and the flag interrupter signal when the mirror has an offset. The offset of the mirror is caused by an error during assembly or a disturbance (for example, when the game device is tilted and used). When the mirror has no offset, the pulse width α of the high level portion of the flag interrupter signal is as shown in FIG.
As shown in 5, it becomes equal every time. On the other hand, when the mirror has an offset, the pulse width of the high-level part of the flag interrupter signal is, as shown in FIG. , And the pulse width γ from 6 to 8) have different values. Here, the ratio (β / γ) of the pulse width before and after the high level portion in one cycle corresponds to the offset amount Δ of the mirror. The column table reference start address needs to be changed according to this offset amount Δ. This is because the vibration phase (angle range) of the mirror used for displaying an image differs depending on whether the mirror has no offset. Therefore, the mirror control circuit 211 calculates the ratio of the pulse widths before and after the high level portion in the immediately previous display cycle, and obtains the column table reference start address CTA based on this calculation result. The conversion from the pulse width ratio to the column table reference start address CTA may be performed using a conversion table or a calculation method.

From the mirror control circuit 211 to the image processing IC 2
23 includes a synchronization clock FCLK and a left display start signal L_.
SYNC and the right display start signal R_SYNC are given.
In addition, after the left display start signal L_SYNC is given from the mirror control circuit 211 to the image processing IC 223, the left column table reference start address CTA_L is given, and then the right column table reference start address CTA is given.
_R is given. The image processing IC 223 controls the left and right LED drivers 213L and 213R based on these signals and the column table reference start address given from the mirror control circuit 211.

FIG. 47 shows the operation when the image processing IC 223 receives the serial data from the mirror control circuit 211. Referring to FIG. 47, the image processing IC 22
3 is 8-bit serial data from the mirror control circuit 211, that is, a column table reference start address C
When TA_L and CTA_R are received (step S5
01), the column table reference start address CTA_
L and CTA_R are respectively stored in predetermined areas of the register 223a (see FIG. 43) (step S50).
2). Next, the image processing IC 223 uses the register 223a.
Column table reference start address CTA_ stored in
By adding a predetermined number of offset bits to L or CTA_R, the column table reference start address C
TA_L or CTA_R is converted into an address having the number of bits conforming to the address specification of the column table (step S503).

The image processing IC 223 executes the above step S5.
According to the left or right column table reference start address obtained in 03, reading of timing data from the column table is started. FIG. 48 shows the image processing IC 22.
3 shows the operation when reading the timing data from the column table. Referring to FIG. 48, image processing I
The C223 first sets initial values to the counters M and N (step S601). The counter M is a counter that counts 384 columns on the screen every 4 columns, and the initial value set therein is 95. This initial value 95 is based on 384/4 = 96. Counter N
Is a counter that counts four columns corresponding to one of the count values of the counter M, and the initial value set therein is 3. Next, the image processing IC 223 sets the left or right column table reference start address obtained in step S503 in the internal register L or R (not shown) (step S602). That is, the image processing IC 223 sets the left column table reference start address in the register L when displaying the left screen (when the left display start signal L_SYNC rises),
When displaying the right screen (when the right display start signal R_SYNC rises), the right column table reference start address is set in the register R.

Next, the image processing IC 223 uses the register L
Alternatively, according to the column table reference start address set in R, the column table (image work memory 225
The timing data D is read from the corresponding address (stored in the area 2254 of the above) (step S603).
Next, the image processing IC 223 sets the read timing data D in the down counter C (step S6).
04). Next, the image processing IC 223 subtracts 1 from the down counter C (step S605). The down counter C is decremented periodically, and in this embodiment, it is decremented every 200 ns. When the count value of the down counter C becomes 0 due to decrement, that is, when the carry signal is output from the down counter C, the image processing IC 223 outputs the latch clock (step S607). This latch clock is given to the LED driver 212L or 212R.

Here, the LED drivers 212L and 2L
As shown in FIG. 49, the 12R is a shift register 213.
1, a latch circuit 2132, and a brightness control circuit 2133. The shift register 2131 is a SAM2247.
Image data transferred from (see FIG. 9) can be stored for one column (224 dots; 224 × 2 = 448 bits). The latch circuit 2132 latches the accumulated data of the shift register 2131 in response to the above-mentioned latch clock from the image processing IC 223. The brightness control circuit 2133 uses the LED array 214L or 2 based on the image data latched by the latch circuit 2132.
The turning on / off and the brightness of each LED in 14R are controlled.

When the latch clock from the image processing IC 223 is given to the LED driver 212L or 212R, the image data for one column accumulated in the shift register 2131 is latched in the latch circuit 2132, and the brightness control circuit 2133 causes the LED array to operate. 214
L or 214R is turned on. As a result, one vertical column is displayed on the left or right screen (step S
608). At this time, the image processing IC 223 determines that the SAM2
The image data of the next column is transferred from 247 to the shift register 2131.

Next, the image processing IC 223 makes the counter N
It is determined whether or not the count value of is 0 (step S609).
If the count value of the counter N is not 0, the display of the image data for four columns has not been completed, so the image processing IC 223
Decrements the counter N by 1 (step S61).
0). After that, the image processing IC 223 makes the step S60.
The operations of 4 to S610 are repeated. When the display of the image data for four columns is completed and the count value of the counter N becomes 0, the image processing IC 223 determines whether the count value of the counter M is 0 (step S611). The count value of the counter M is 0
If not, since the display of the image data for one screen is not completed, the image processing IC 223 subtracts 1 from the counter M (step S612). Next, the image processing IC 2
In step 23, the left or right column table reference start address stored in the register L or R is subtracted by 2 in byte address (step S613). As a result, the timing data of the next column in the column table becomes the read target. After that, the image processing IC 223
The operations of steps S603 to S613 are repeated. When the display for one screen is finished, the count value of the counter M becomes 0, and the image processing IC 223 finishes reading the timing data from the column table.

Next, the operation of the entire display system will be described with reference to the flowchart of FIG. 50 and the timing charts of FIGS. 51 and 52. First, the image processing IC 223 sets an initial value in the counter G (step S70 in FIG. 50).
1). The set value of the counter G corresponds to the number of display frames included in one game frame. At the time of initial setting, a value (for example, 0) determined corresponding to the initial screen is set in the counter G. Next, the mirror control circuit 211
The synchronous clock FCLK from rises (step S
702). The image processing IC 223 accordingly responds to the counter G.
It is determined whether or not the count value of is 0 (step S703).
Here, if the count value of the counter G is 0, the image processing IC 223 raises the game clock GCLK (step S704). Next, the image processing IC 223
Switches the frame buffer to be displayed (step S705). For example, in the previous time, when the frame buffers 2241 and 2243 were selected and the image data accumulated therein was transferred to the image display unit 21 and displayed, the image processing IC 223 causes the frame buffers 2242 and 2244 to display the frame buffers 2242 and 2244 this time. To be displayed. On the contrary, last time, the frame buffers 2242, 2
When 244 is selected as the display target, the image processing IC 223 determines that the frame buffers 2241 and 2243
Is selected as the target for this display. Initially, the frame buffer determined by default (for example, the frame buffers 2241 and 2243) is selected. Next, the image processing IC 223 sets a value in the counter G (step S706). Normally, the counter G is set to 0. Further, when performing a heavy load drawing work in the next game frame, a value of 1 or more is set in the counter G according to the degree of load. The CPU 22 determines whether or not the drawing load is heavy because it depends on the game program.
Follow the instructions from 1.

Next, the left display start signal L_SYNC from the mirror control circuit 211 rises (step S70).
7). In response, the image processing IC 223 performs display processing of the image for the left eye (step S708). That is, the image processing IC 223 reads the left column table reference start address CTA_L transmitted from the mirror control circuit 211 (see FIG. 47), and sequentially reads the timing data from the corresponding address in the column table (FIG. 48).
reference). At this time, a latch pulse is output from the image processing IC 223 at a time interval defined by each read timing data. Therefore, the LED unit 212
The width of each column displayed by L is changed according to the timing data described in the column table, and is corrected so that the width of each column becomes uniform. However, in this embodiment, the correction of the column width is performed every four columns in order to reduce the processing load of the image processing IC 223. Next, the right display start signal R_S from the mirror control circuit 211.
YNC rises (step S709), and image processing I
The display processing of the image for the right eye is performed by C223 (step S710). In the display processing for the image for the right eye, substantially the same processing as the display processing for the image for the left eye in step S708 is performed.

As is apparent from the above description, and also in FIG.
As shown in FIG. 1, the display processing for the left-eye image and the display processing for the right-eye image are performed with a temporal shift within one display frame. Therefore, the load on the image processing IC 223 is reduced. Further, the peak power consumption is distributed, and the maximum power consumption is reduced. Therefore, the permissible capacity for current and voltage can be set low, which facilitates design and reduces cost.

After that, the image processing IC 223 returns to the operation of step S702. When the next display frame arrives and the synchronous clock FCLK rises (step S70
2), the image processing IC 223 determines that the count value of the counter G is 0.
It is determined whether or not (step S703). When the count value of the counter G is 0, the image processing IC 223 performs the operation of step S704 and thereafter again. On the other hand, if the count value of the counter G is not 0, the image processing IC 223 subtracts 1 from the counter G (step S711). After that, the image processing IC 223 repeats the operations in and after step S707. At this time, since the frame buffer to be displayed cannot be switched, the same picture as the previous time is displayed on the left and right display systems. That is, in the present embodiment, as shown in FIG. 52, when a plurality of display frames are included in one game frame (defined by the game clock GCLK), the same picture is displayed in each display frame. become. This is because, as described above, when an image with a heavy load (a large amount of data) is drawn, the drawing process of the image processing IC 223 may not be completed within one display frame. After that, the image processing IC 223
The operations of steps S702 to S711 are cyclically repeated.

By the way, in this embodiment, the CPU 221
Can rewrite the column table in the image work memory 225 in the middle of the game in accordance with an instruction from the game program. This allows the image display unit 21 to display a special picture such as a wavy shape.
The data for rewriting the column table may be stored in the program memory in advance, or the CPU 2 based on the calculation formula given on the game program.
21 may rewrite the data in the column table by calculation. As described above, according to the present embodiment, since it is possible to process a special picture by an instruction from the game software while using the normal picture data as it is, it is possible to increase the variations of the picture that can be displayed without increasing the data amount. it can.

Although the above embodiment has been described as an electronic game device, the stereoscopic image display device of the present invention is not limited to this, and can be used as a training device, an educational device, a guide device, etc. It can be widely applied to devices with displays.

In the above embodiment, the display device is arranged in the vicinity of both eyes of the player. However, the parallaxed left and right images are displayed or projected on the television receiver or the screen at different timings. You may do it. In this case, the player uses a shutter mechanism (eg
Just wear glasses with a liquid crystal shutter) and look at the displayed image. Also, the left and right images may be displayed in different colors. That is, the left image may be displayed by any one of the three RGB electron beams, and the right image may be displayed by one of the remaining two electron beams. In this case, the player wears glasses with different filters attached to the left and right lenses to see the displayed image. Further, the left and right images may be displayed by changing the polarization angle so that the player wears polarized glasses to view the images. In the following, an embodiment will be described in which the parallaxed left and right images are displayed or projected on a television receiver or screen.

FIG. 53 is a block diagram showing an electrical configuration of an electronic game device according to another embodiment of the present invention. In FIG. 53, the electronic game device 100 according to the present embodiment includes a main body device 200, a program cartridge 4 detachably attached to the main body device 200, and a controller 6 connected to the main body device 200 via a cord 5. I have it. The configurations of the program cartridge 4 and the controller 6 are the same as in the case of the above-described first embodiment (see FIG. 2).

The main body device 200 is the image / audio processing device 2.
2, a transfer port 23, and an image data conversion circuit 25. The configurations of the image / audio processing device 22 and the transfer port 23 are the same as those in the case of the above-described first embodiment (see FIG. 2). The image data conversion circuit 25 generates a display signal based on the image data and the gradation control clock pulse obtained from the image memory 224 and the image processing IC 223, and outputs the display signal to the display device 7. Display device 7
Is a display device including a CRT display, a liquid crystal display, or a screen projection device, and a plurality of people can view the displayed contents at the same time.

The electronic game device of the first embodiment described above is
1 because it has a display that is placed close to both eyes
Only human players could play. On the other hand, FIG.
The electronic game device of the second embodiment shown in FIG. 3 is configured so that a large number of people can play or watch at the same time.
That is, the electronic game device of the second embodiment is mainly used in the game center. However, the above-mentioned first
Since the display method of the display mounted in this embodiment is different from that of the display 7 used in the second embodiment in principle, the image data generated by the image / sound processing device 22 in the first embodiment is not displayed. Even if the display 7 is given as it is, a normal display operation is not performed. Therefore, in the second embodiment, by providing the image data conversion circuit 25, the image data generated by the image / sound processing device 22 can be displayed on the display 7 used in the second embodiment. I am trying to convert it to a signal. By mounting such an image data conversion circuit 25, a multi-participation type electronic game device is realized without significantly changing the configuration of the electronic game device of the first embodiment and without changing the program at all. can do.

FIG. 54 shows the image data conversion circuit 2 of FIG.
It is a block diagram which shows the structure of 5 in more detail. 54, the image data conversion circuit 25 includes a luminance signal conversion circuit 251, a writing circuit 252, a reading circuit 253, and
First and second memory units 254 and 255;
First and second dot selectors 256 and 257,
The output circuit 258 and the timing control circuit 259 are included. The first memory unit 254 includes a dot data storage memory 2541 and a brightness data storage memory 25.
42, and similarly, the second memory unit 255 includes
A dot data storage memory 2551 and a brightness data storage memory 2552 are included.

FIG. 55 is a timing chart showing gradation control clock pulses A, B and C output from the image processing IC 223. FIG. 56 is a diagram for explaining a mode in which image data is written in the dot data storage memories 2541 and 2551. FIG. 57 is a diagram for explaining a mode in which image data is read from the dot data storage memories 2541 and 2551. The operation of the electronic game device shown in FIG. 54 will be described below with reference to FIGS. 55 to 57.

As described in the first embodiment, the image memory 224 outputs the left and right image data of two parallaxes in units of vertical 16 bits (8 dots). The image data for 8 dots output from the image memory 224 is supplied to the dot data storage memories 2542 and 2552 and written in the address designated by the write address output from the write circuit 252. Therefore,
In the dot data storage memories 2542 and 2552, as shown in FIG. 56, the image data is written every 8 dots in the vertical direction and in the column order.

On the other hand, the image processing IC 223 is the first
Although not described in the above embodiment, clock pulses A, B and C for gradation control as shown in FIG. 55 are output. The clock pulses A, B and C are given to the luminance signal conversion circuit 251. The luminance signal conversion circuit 251 has a pulse width T1 of the clock pulse A and a pulse width T of the clock pulse B.
2 and the total pulse width T3 of the clock pulses A, B, and C are converted into digital values, and are output to the brightness data storage memories 2542 and 2552 as brightness data. Luminance data storage memories 2542 and 2552
Stores the given luminance data.

The image data stored in the dot data storage memories 2541 and 2551 are sequentially read in four rows according to the read address output from the read circuit 253. At this time, as shown in FIG. 57, the image data for 4 rows is 4 dots (8 bits) in order from the leftmost column.
It is read in units.

Read circuit 253 supplies the lower 2 bits of the read address to first and second dot selectors 256 and 257. This allows the first and second
The dot selectors 256 and 257 select any one of the 4-dot image data read from the dot data storage memories 2541 and 2551, respectively. First and second dot selectors 256 and 2
The 1-dot image data selected by 57 is supplied to the output circuit 258. Dot data storage memory 2
The reading of four lines of image data from 541 and 2551 is repeated four times. This, in the end,
Image data is sequentially supplied to the output circuit 258 one dot in the horizontal direction. That is, in this embodiment,
The image data written in the dot data storage memories 2541 and 2551 in a column-sequential manner is read in a row-sequential manner and supplied to the output circuit 258. By performing such vertical / horizontal conversion, it is possible to obtain a signal that can be displayed by the display device 7 that performs raster scanning.

On the other hand, the luminance data stored in the luminance data storage memories 2542 and 2552 (the first digital value corresponding to the pulse width T1 of the clock pulse A and the second digital value corresponding to the pulse width T2 of the clock pulse B). Digital value and total pulse width T of clock pulses A, B, C
(Including a third digital value corresponding to 3) is read in synchronization with the image data from the dot data storage memories 2541 and 2552, and given to the output circuit 258. The output circuit 258 uses the gradation value (4 gradations represented by 2 bits) of each dot data given from the first and second dot selectors 256 and 257 as a selection condition, and then outputs the first to third digital values. , One of the digital values is selected. For example, the output circuit 258
Selects the first digital value when the dot data is 01, the second digital value when the dot data is 10, and the third digital value when the dot data is 11. Then, the output circuit 258 converts the selected digital value into an analog signal and outputs it as a display signal to the display device 7. As a result, the gradation value of each dot of the image data is converted into the brightness value defined by the pulse width of the clock pulses A, B, and C.

The display device 7 displays the display signals of the parallaxed left and right images provided from the output circuit 258 in different colors or by light beams having different polarization angles. The player can see the left and right parallaxes by looking at the glasses with the left and right different color filters in the former case, and with the glasses with different left and right polarizing filters in the latter case. The images can be viewed separately by the left and right eyes. As a result, a stereoscopic image is obtained.

Here, the write circuit 252 and the read circuit 2
The operation of 53 is controlled by the timing signal output from the timing control circuit 259. At this time, the timing control circuit 259 controls the operation of the write circuit 252 and the read circuit 253 so that the first and second memory units 254 and 255 perform a so-called toggle operation. As a result, the first and second memory units 25
4 and 255, when one of them is performing a writing operation, the other one is performing a reading operation. as a result,
Image data can be captured and images can be displayed at the same time, which enables high-speed processing.

The pulse width of each of the clock pulses A, B and C output from the image processing IC 223 is the memory 41.
According to the game program described in
Can be changed arbitrarily. As previously mentioned,
In the present embodiment, the gradation value of each dot of the image data is converted into the luminance value defined by the pulse width of the clock pulses A, B, C and is given to the display device 7. Therefore, the clock pulses A, B , C by changing each pulse width,
The substantial number of gradations of the image displayed on the display device 7 can be dramatically increased.

[0121]

According to the first aspect of the present invention, a stereoscopic image having a parallax can be displayed from planar image data for one image having no parallax. In comparison, it is possible to obtain a stereoscopic image display device having a simple structure and using a small amount of data.

According to the second aspect of the present invention, a stereoscopic image with parallax can be displayed from the image data of one image which is exactly the same on the left and right.

According to the third aspect of the invention, in the source image data, the cut-out range of the left and right display image data is slightly changed in the horizontal direction, so that a stereoscopic display image with parallax can be obtained.

According to the fourth aspect of the present invention, the amount of change in parallax can be changed for each character, so that more complex and fine parallax can be performed.

According to the fifth aspect of the present invention, since the amount of change in parallax can be changed for each layer of the background to be displayed in an overlapping manner, a background image with a more perspective can be obtained.

According to the invention of claim 6, the amount of change in the parallax can be changed for each character for the moving image character and for each layer for the background character. Can be done.

[Brief description of drawings]

FIG. 1 is a perspective view showing a usage state of an electronic game device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing an electrical configuration of an electronic game device according to an embodiment of the present invention.

3 is an exploded perspective view showing an example of the configuration of a program cartridge 4 in FIG.

4 is a diagram showing a more detailed configuration of an image display unit 21 in FIG.

5 is a diagram showing a memory map of a memory 41 in FIG.

FIG. 6 is a diagram showing a memory map of a backup memory 42 in FIG.

7 is a diagram showing a memory map of a working memory 222 in FIG.

8 is a diagram showing a memory map of an image work memory 225 in FIG. 2. FIG.

9 is a diagram showing a memory map of an image memory 224 in FIG. 2. FIG.

FIG. 10 is a schematic diagram for explaining the concept of the world.

FIG. 11 is a schematic diagram of a basic BG map.

FIG. 12 is a diagram showing a configuration of a BG map on a memory.

FIG. 13 is a diagram showing an example of an OBJ created by combining character blocks.

FIG. 14 is a schematic diagram for explaining an arrangement state of OBJ attribute groups in OAM and a search order of them.

FIG. 15 is a diagram showing an example of a data format of an OBJ attribute.

FIG. 16 is a diagram showing an OBJ display coordinate system on a display screen.

FIG. 17 is a diagram showing an example of a data format of world attributes.

FIG. 18 is a diagram showing a relationship between a cutout position of a BG expanded on a BG map and a display position of a BG expanded on a display screen according to world attributes.

FIG. 19 is a diagram showing an example of a character block and object attributes prepared for displaying a certain OBJ.

20 is a diagram showing an OBJ without parallax displayed using the character block of FIG.

FIG. 21 is a diagram showing an example of a character block prepared for displaying a plurality of OBJs having parallax with each other.

FIG. 22 is a diagram showing a state in which the character block shown in FIG. 21 is displayed on the left-eye screen and the right-eye display screen according to the respective OBJ attributes.

FIG. 23 is a schematic diagram for explaining a stereoscopic effect that is felt when the left and right screens shown in FIG. 22 are viewed at the same time.

FIG. 24 is a diagram showing a state of BGs displayed on the left and right screens when the parallax on the screen is 0.

FIG. 25 is a diagram illustrating a state of BGs displayed on the left and right screens when the parallax on the screen is −.

FIG. 26 is a diagram illustrating a state of BGs displayed on the left and right screens when the parallax on the screen is +.

[Fig. 27] Fig. 27 is a diagram illustrating a state of a BG clipped from the BG map and a state of the BG displayed on the left and right screens when the parallax MP on the BG map is given.

FIG. 28 is a flow chart showing a drawing operation in the embodiment of the present invention.

FIG. 29 is a subroutine step S11 in FIG.
It is a flowchart which shows the detail of 2.

FIG. 30 is a subroutine step S11 in FIG.
6 is a flowchart showing details of No. 6.

FIG. 31 is a subroutine step S11 in FIG. 28.
7 is a flowchart showing details of No. 7.

FIG. 32 is a diagram showing the relationship between the vibration phase of the mirror and the display timing in the left display system.

FIG. 33 is a diagram showing the relationship between the vibration phase of the mirror and the display timing in the display system on the right side.

FIG. 34 is a diagram showing a position where an image screen is projected in the left display system.

FIG. 35 is a diagram showing a photo interrupter and flags.

FIG. 36 is a diagram showing a flag attached to a mirror.

FIG. 37 is a diagram showing two interrupters provided in the photo interrupter.

FIG. 38 is a diagram showing the relationship between the output state of the photo interrupter and the moving direction of the flag when the output of the flag interrupter falls.

FIG. 39 is a diagram showing the relationship between the output state of the photo interrupter and the moving direction of the flag when the output of the flag interrupter rises.

FIG. 40 is a diagram showing a state in which the character “D” is displayed at the center and the end of the image screen before correction is performed.

FIG. 41 is a diagram showing a state in which the character “D” is displayed at the center and the end of the image screen after the correction.

FIG. 42 is a diagram showing an arrangement state of column tables on an image work memory.

FIG. 43 is a diagram showing a register for storing a column table reference start address CTA provided in the image processing IC.

FIG. 44 is a diagram showing a register for storing timing data, which is provided in the image processing IC.

FIG. 45 is a diagram showing a relationship between a vibration phase of a mirror and a flag interrupter signal when the mirror has no offset.

FIG. 46 is a diagram showing a relationship between a vibration phase of a mirror and a flag interrupter signal when the mirror has an offset.

FIG. 47 is a flowchart showing an operation when the image processing IC receives serial data from the mirror control circuit.

FIG. 48 is a flowchart showing an operation when the image processing IC reads timing data from the column table and displays the image data.

FIG. 49 is a block diagram showing a more detailed configuration of the LED unit.

FIG. 50 is a flowchart showing the operation of the entire display system.

FIG. 51 is a timing chart showing the operation of the entire display system when one display frame is included in one game frame.

FIG. 52 is a timing chart showing the operation of the entire display system when a plurality of display frames are included in one game frame.

FIG. 53 is a block diagram showing an electrical configuration of an electronic game device according to another embodiment of the present invention.

54 is a block diagram showing a more detailed configuration of the image data conversion circuit 25 shown in FIG. 53.

FIG. 55 is a timing chart showing gradation control clock pulses output from the image processing IC 223 of FIG. 53.

FIG. 56 is a dot data storage memory 2541 of FIG. 54.
And FIG. 2551 is a diagram for explaining a mode in which image data is written.

FIG. 57 is a dot data storage memory 2541 of FIG. 54.
And FIG. 2551 is a diagram for explaining a mode in which image data is read.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Electronic game device 2 ... Main body device 3 ... Support device 4 ... Program cartridge 6 ... Controller 21 ... Image display unit 22 ... Image / sound processing device 41 ... Program memory 42 ... Backup memory 43 ... Battery 211 ... Mirror control circuit 212L, 212R ... LED unit 213L, 213R ... LED driver 214L, 214R ... LED array 215L, 215R ... Motor drive / sensor circuit 216L, 216R ... Lens 217L, 217R ... Mirror 218L, 218R ... Voice coil motor 221 ... CPU 222 ... Working memory 223 Image processing IC 224 Image memory 225 Image work memory 226 Sound processing IC 227 Amplifier 228 Speaker

Claims (10)

[Claims] 1. A stereoscopic image display device for displaying a stereoscopic image with parallax on a display means, which is a source image as a source of a plurality of screens in order to generate a planar image without parallax. Image data storage means for storing data; at least a first display image data for displaying a first display image for the left, including a storage area of at least a dot number corresponding to the number of pixels of one screen of the display means For temporarily storing a writable / readable first temporary storage means, including a storage area of at least a dot number corresponding to the number of pixels of one screen of the display means, for displaying a second display image for the right side Writable / readable second temporary storage means for temporarily storing the second display image data, and a parallax for designating an amount by which the first and second display images are laterally displaced from each other. Parallax information record that stores information Means for converting the planar image data of one image in the source image data into first and second display image data, and displaying the first and second display images on the display means. Based on the parallax information, the first display image data is written in the first temporary storage means so that the first and second display images are laterally displaced from each other by the number of dots corresponding to the parallax, and Writing control means for writing the second display image data to the second temporary storage means; and when the writing control means is not writing to the first or second temporary storage means, the first Or second
Read control means for reading the first or second display image data temporarily stored in the temporary storage means, and the first and second display image data read by the read control means for the display means. A stereoscopic image display device comprising a supply means for supplying. 2. The writing control means, based on the parallax information, so that at least one display image is laterally displaced when displaying the first and second display images on the display means. The stereoscopic image display device according to claim 1, wherein writing of the first and second display image data is controlled. 3. The image data storage means is arranged in the left-right direction when one of the first and second display images is displayed on the display means as the image data for one screen in the source image data. Image data of a wider range in the left-right direction than the display range is stored, and the writing control unit stores one screen of a wide range in the left-right direction stored in the image data storage unit based on the parallax information. Image data of a certain range is cut out from the image data of (1) and written to the first temporary storage means as the first display image data, and the image data of a range laterally shifted from the cut out range is cut out and then the second display image data is cut out. The stereoscopic image display device according to claim 1, wherein the stereoscopic image display device writes the display image data in the second temporary storage means. 4. The image data storage means stores the source image data on a character-by-character basis, and stores the source image data for a plurality of screens by a plurality of characters. The parallax information storage means stores the character data. The parallax information for each character is stored as an amount of laterally shifting the first and second display images in order to change the shift amount in units. Stereoscopic image display device. 5. The image data storage means stores the source image data in character units, and stores the source image data of a plurality of screens by combining a plurality of characters, and the parallax information storage means comprises: Parallax information is stored such that the amount by which the first and second display image data to be written in the first and second temporary storage means is laterally displaced from each other between the distant view image and the near view image. The writing control means writes the first display image data for distant view into the first temporary storage means and reduces the distant view based on the parallax information so as to decrement the amount of deviation in the image data for distant view. The second display image data for near view is written in the second temporary storage means, and the first display image data for near view is stored in the first temporary storage so as to increment the deviation amount for the image data for near view. And writes the second display image data for writing and distant to stage in the second temporary storage means, the stereoscopic image display apparatus according to claim 1. 6. The image data storage means stores, as source image data, a moving image character and a background character in character units, and stores a plurality of background source image data for a plurality of screens by combining a plurality of characters. The parallax information storage unit stores moving image parallax information for each moving image character on a character-by-character basis as an amount of laterally shifting the first and second display image data from each other, and for the background image, The parallax information for the background is stored so as to change between the image for the distant view and the image for the near view, and the writing control unit decrements the amount of deviation for the image data for the distant view based on the background parallax information. As described above, the distant view first display image data is written in the first temporary storage means and the distant view second display image data is written in the second temporary storage hand. The first display image data for near view is written to the first temporary storage means and the second display image data for near view is written to the second so as to increase the amount of deviation when writing the near view image data. Writing the image data of the moving image character in the first and second temporary storage units based on the moving image parallax information. ,
The stereoscopic image display device according to claim 1. 7. The display means is used in the vicinity of a face and has two sets of left and right display devices, each display device having a plurality of dots arranged in one column in the vertical direction. The supply unit includes a display element and a mirror that reflects the display state of each display element and that is rotated in a certain angle range, and the supply unit includes one column in the vertical direction of the first display image data. Data is supplied to a plurality of display elements included in the left display, and one column of data in the second display image data in the vertical direction is displayed in the plurality of display elements included in the right display. The stereoscopic image display device according to claim 1, wherein the data for one column in the vertical direction to be supplied is shifted in time series one column at a time in the horizontal direction. 8. The display means is a raster scan type display which scans the first and second electron beams in the horizontal direction and repeats scanning in the horizontal direction by sequentially shifting one line in the vertical direction. The means outputs the first display image data to the first display image data.
2. The stereoscopic image display device according to claim 1, wherein the second display image data is supplied to generate the electron beam of the second electron beam, and the second display image data is supplied to generate the second electron beam. 9. A stereoscopic body provided with first and second temporary storage means, a write control means, a read control means, and a supply means for displaying a stereoscopic image with parallax on the display means. A storage device used in an image display device and configured to be attachable to and detachable from the stereoscopic image device, wherein the first temporary storage means has at least the number of dots corresponding to the number of pixels of one screen of the display means. Including the storage area of
The first display image data for displaying the first display image for the left is temporarily stored and is writable / readable, and the second temporary storage means is at least one of the display means. Including a storage area of the number of dots corresponding to the number of pixels of the screen,
The second display image data for displaying the second display image for the right side is temporarily stored, and is configured to be writable / readable, and the writing control unit is configured to store the first display image data. Is written in the first temporary storage means and the second display image data is written in the second temporary storage means, and the read control means includes the first or the first write control means. When the writing operation is not performed to the second temporary storage means, the first or second display image data temporarily stored in the first or second temporary storage means is read out, The means is configured to supply the first and second display image data read by the reading means to the display means, and the storage device generates a planar image without parallax, Source image for multiple images Image data storing means for storing image data for storing data, and parallax information for storing parallax information for designating an amount by which the first and second display images are laterally displaced from each other. Storage means, providing the parallax information to the writing control means, and
And a display control program storage unit that stores a display control program for designating a display coordinate position of the second display image, whereby the writing control unit is configured to display the image based on the display control program. Of the source image data stored in the data storage means, one screen of planar image data is converted into first and second display image data, and the first and second display images are displayed on the display means. Based on the parallax information, the first and second display images may be laterally displaced from each other by the number of bits corresponding to the parallax when the first and second display images are displayed.
The storage device used in the stereoscopic image display device, wherein the display image data of 1 is written in the first temporary storage means, and the second display image data is written in the second temporary storage means. 10. The image data storage means stores a moving image character and a background character on a character-by-character basis as source image data, and combines a plurality of background characters as a background image to display a background for a plurality of screens. Source image data is stored, and the parallax information storage unit stores moving image parallax information on a character-by-character basis for a moving character as an amount by which the first and second display images are laterally displaced from each other.
For the background image, stores the background parallax information set to change between the distant view image and the near view image, by the display control program stored in the display control program storage means, the write control means, Based on the background parallax information,
The distant view first display image data is written in the first temporary storage means and the distant view second display image data is written so as to decrement the shift amount in the case of the distant view image data. , The first display image data for near view is written in the first temporary storage means and the second display image data for near view is written in the second temporary so as to increase the amount of deviation for the near view image data. When writing the image data of the moving image character into the first and second temporary storage units by writing the image data in the storage unit and changing the amount of displacement based on the moving image parallax information, priority is given to the moving image character and the background image. The storage device used in the stereoscopic image display device according to claim 9, wherein priority data for determining the order is given to write image data having a high priority. .