JP3549313B2 - Game device having 2D / 3D image conversion processing circuit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a game device having an image conversion processing circuit that performs 2D and 3D display processing.
[0002]
[Prior art]
Some game devices do not display all of the display screen in three dimensions (3D), but can display a part of them in two dimensions (2D).
For example, in a space invader game, an invader that moves in the lower direction (vertical direction) of the screen that appears frequently needs to be displayed three-dimensionally, but a UFO that moves in the horizontal direction at the top of the screen may perform two-dimensional display. Is possible.
In a conventional game device, image data is processed so as to be displayed in 2D or 3D at the time of development, a game program is created including the processed image data, and the game program is stored in a storage unit.
[0003]
[Problems to be solved by the invention]
For this reason, 2D display and 3D display in the game having the same contents are processed separately, and there is a disadvantage that an error occurs in display.
Further, since a 2D and 3D display processing program is created for each game type during development, it takes a long time for development, and the capacity of the game program increases.
An object of the present invention is to provide a 2D / 3D image conversion processing circuit capable of reducing errors in display and shortening a development period and reducing a program capacity by commonly processing a game having the same contents in 2D and 3D. It is providing the game device which has.
[0004]
[Means for Solving the Problems]
Gaming device, an internal coordinate calculation unit for calculating a coordinate position of each character, coordinate position of each character calculated in the internal coordinate calculator with 2D · 3D image conversion processing circuit according to the present invention in order to achieve the object A determination unit that performs 2D display determination if the image is above a predetermined position on the screen and 3D display determination if the image is below the predetermined position , and conversion of the y coordinate to the y coordinate position in order to give a sense of depth A coordinate conversion calculation table in which values are described, an x coordinate expansion table in which the x coordinate enlargement ratio of the character is described, and a three-dimensional effect are displayed with respect to the y coordinate conversion values in the coordinate conversion calculation table in order to give a sense of perspective. a parallax table shift amount in the x-axis direction is described with respect to conversion values of y coordinates in the coordinate conversion calculation table, the display-size by 3D by the determination unit Said such depth as the character is widened at the bottom of the screen by referring to the coordinate conversion calculation table, the character as the x direction scaling ratio that with reference to the x-coordinate enlarged table at the bottom of the screen to have been made character 3D display processing means for processing each character so as to increase the amount of shift in the x-axis direction as the character located at the lower part of the screen with reference to the parallax table, and the 3D display character processed by the 3D display processing means The display unit for right eye and the display unit for left eye for displaying 2D display characters have a pair of display devices .
[0005]
Further, in the present invention the above-described structure, the 3D display processing means generates a y-coordinate as y-direction spacing becomes wider as the direction of depth of those characters as characters at the bottom of the screen by the coordinate conversion calculation table and y coordinate generation unit for display, the x by the coordinate magnification table as the character at the bottom of the screen, the depth direction and the x-coordinate display x direction scaling ratio is perpendicular to produce the x coordinate to be greater generation parts and the by the parallax table as the character at the bottom of the screen, shifting amount becomes large as the display CHR determining means is moved to the right or left direction each dot by one dot gives disparity to the pair of display device It is composed of.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic perspective view showing an example of a display device including a pair of LCDs.
The display device 9 is provided with windows 22a and 22b, such as lenses for viewing with the right and left eyes, on the front surface, and display units for the right-eye LCD 9a and the left-eye LCD 9b are disposed behind the windows 22a and 22b.
A stereoscopic view can be achieved by simultaneously viewing the images displayed on the right-eye LCD 9a and the left-eye LCD 9b with both eyes.
[0007]
FIG. 2 is a diagram for explaining an example of 2D and 3D display processing contents of the game apparatus according to the present invention, and is an example of a space invader game.
In FIG. 2A, the vanishing point 23 of the invader 19 is set at the top of the screen, and the 2D display screen is above the vanishing point and the 3D display screen is below the vanishing point. The UFO 18 is moved in the horizontal direction and displayed in 2D, and the invader 19 is moved in the lower part of the screen, that is, in the front direction, and is displayed in 3D including the protective wall 20 and the gun seat 21.
As shown in FIG. 2B, such image data is converted to a y-coordinate to give a sense of depth and to a magnification of each character to give a sense of perspective.
Then, parallax correction is performed so that parallax when viewed from the left eye and right eye is produced, and images for the left eye and the right eye are formed as shown in FIGS.
[0008]
FIG. 3 is a system configuration diagram of a game apparatus having a 2D / 3D image conversion processing circuit according to the present invention.
When the game is activated by the player's operation, the CPU 1 reads an operation program for executing the game from the program ROM 6 via the system bus 2 and starts executing the operation program.
The background image of the screen is read from the storage unit 10 and the character is read from the character ROM 7, 2D and 3D display processing is performed by the CPU 1, stored in the screen memory 8 through the system bus 2, and the initial screen is displayed on the display unit 9.
An input signal from the button of the operating device 4 is sent to the CPU 1 via the input / output control circuit 3. The work RAM 5 is used as a work area for the CPU 1.
[0009]
FIG. 4 is a diagram showing an embodiment in which the 2D / 3D image conversion processing function of the CPU is blocked. FIG. 5 is a flowchart for explaining the operation of the circuit of FIG.
The image data read from the storage unit 10 and the character ROM 7 and input to the CPU 1 is calculated by the internal coordinate calculation unit 11 (step (hereinafter referred to as “S”) 601). Then, the 2D / 3D determination unit 12 determines whether the display is 2D display or 3D display depending on whether it is above or below the vanishing point on the screen (S602). If the character is for 2D display, the character (UFO) is determined (S610), and 2D display is performed (S611).
On the other hand, in the case of a character that performs 3D display, first, the display y-coordinate generation unit 13 refers to the coordinate conversion calculation table 16a to convert the y-coordinate for giving a sense of depth (S603, 604).
[0010]
Next, the display x-coordinate generation unit 14 refers to the x-coordinate magnification rate table 16b, and sets the x-coordinate magnification rate of each character at each y 'coordinate for giving a sense of perspective (S605, S606).
Further, the display CHR determination unit 15 gives a parallax for giving a stereoscopic effect by referring to the parallax table 16c (S607, S608). That is, a predetermined dot is moved in the x-axis direction.
The display CHR determination unit 15 performs the above-described parallax processing, creates left-eye and right-eye screens, and sends them to the display device 9 (S609).
[0011]
Next, details of the conversion operation by referring to each table will be described.
FIG. 6 shows an example of the contents of the coordinate conversion calculation table and a conversion example when coordinate conversion is performed using the table.
The coordinate conversion calculation table shown in FIG. 6C describes y ′ coordinates A to N after conversion for addresses 0 to n (y coordinates), and y ₁ to y shown in FIG. _{The six} coordinates are converted as y ₁ ′ to y ₆ ′ shown in FIG.
Since the lower part of the screen is closer to the front, the sense of depth is created by expanding the coordinate interval compared to the upper part of the screen.
[0012]
FIG. 7 shows an example of the contents of the x-coordinate enlargement ratio table and an example of converting the x-coordinate enlargement ratio of the character using the table.
In the x-coordinate enlargement ratio table shown in FIG. 7C, magnifications a to n are described for addresses 0 to n (y ′ coordinates), and each character shown in FIG. ) Is set to the magnification shown in FIG.
Since the lower part of the screen is a short distance and the upper part of the screen is a far distance, the character at the upper part of the screen is reduced and the character at the lower part of the screen is enlarged to create a sense of perspective.
[0013]
FIG. 8 shows an example of the contents of the parallax table and an example in which parallax is given by the parallax table.
In the parallax table shown in FIG. 8D, parallax information, that is, the shift amount (number of dots) is described for the line addresses 1, 2,... (Y ′ coordinates).
The line address 3 is the y coordinate of the vanishing point shown in FIG. 8C, and each dot constituting the character is one dot as the line moves to the bottom (front) of the screen one by one with reference to that line. Move right or left.
As shown in FIG. 8B, the shift amount of each character that has undergone depth and perspective conversion shown in FIG.
[0014]
【The invention's effect】
As described above, the present invention calculates the coordinate position of each character on the screen of the image data, determines whether 2D display or 3D display is performed according to the position, and the 3D display character has a sense of depth and perspective. In addition, coordinate conversion is performed to produce a three-dimensional effect, and a screen for right eye and left eye is created, and 2D display and 3D display are displayed on a pair of display units on one screen.
Therefore, since the 2D display and the 3D display in the game having the same content are processed in common, the display error is reduced.
In addition, since it is not necessary to create a 2D and 3D display processing program during development, the development time of the game program can be shortened, and the capacity of the game program can be reduced.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing an example of a display device including a pair of LCDs.
FIG. 2 is a diagram for explaining the contents of 2D and 3D display processing of the game device according to the present invention.
FIG. 3 is a system configuration diagram of a game device having a 2D / 3D image conversion processing circuit according to the present invention.
FIG. 4 is a functional block diagram illustrating an embodiment of a 2D / 3D image conversion processing circuit of a CPU.
FIG. 5 is a flowchart for explaining the operation of the circuit of FIG. 4;
FIG. 6 is a diagram for explaining a coordinate conversion operation by a coordinate conversion calculation table for giving a sense of depth.
FIG. 7 is a diagram for explaining a coordinate conversion operation by an x-coordinate enlargement ratio table for giving a sense of perspective.
FIG. 8 is a diagram for explaining a coordinate conversion operation using a parallax table for producing a stereoscopic effect;
[Explanation of symbols]
1 ... CPU
2 ... System bus 3 ... Input / output control circuit 4 ... Operating device 5 ... Work RAM
6 ... Program ROM
7 ... Character ROM
DESCRIPTION OF SYMBOLS 8 ... Screen memory 9 ... Display apparatus 10 ... Memory | storage part 11 ... Internal coordinate calculation part 12 ... 2D / 3D determination part 13 ... Display y coordinate generation part 14 ... Display x coordinate generation part 15 ... Display CHR determination part 16 ... Table Part 17 ... Invader screen part 18 ... UFO
19 ... Invader 20 ... Protective wall 21 ... Gun seat

Claims (2)

An internal coordinate calculation unit for calculating the coordinate position of each character ;
A determination unit that performs display determination by 2D if the coordinate position of each character calculated by the internal coordinate calculation unit is above a predetermined position on the screen, and performs display determination by 3D if it is below the predetermined position;
A coordinate conversion calculation table in which y-coordinate conversion values are described with respect to a y-coordinate position to give a sense of depth, and a character's x-coordinate enlargement ratio with respect to the y-coordinate conversion values in the coordinate conversion calculation table to give a sense of perspective An x-coordinate enlargement table in which is described, and a parallax table in which a shift amount in the x-axis direction is described with respect to a conversion value of the y-coordinate in the coordinate conversion calculation table in order to produce a stereoscopic effect
With reference to the x coordinate enlargement table, the lower part of the screen is referred to so that the depth of the character at the lower part of the screen with reference to the coordinate conversion calculation table is larger for the character for which display determination by 3D has been performed by the determination unit. 3D display processing means for processing each character so that the character in the lower part of the screen has a larger shift amount in the x-axis direction with reference to the parallax table so that the character in the x-direction has a larger magnification in the x-direction .
A pair of display devices including a right-eye display unit and a left-eye display unit for displaying the 3D display character and the 2D display character processed by the 3D display processing unit;
A game apparatus having a 2D / 3D image conversion processing circuit. The 3D display processing unit, a y coordinate generation unit for display to generate a y-coordinate as y-direction spacing becomes wider as the direction of depth of the characters as those characters at the bottom of the screen by the coordinate conversion calculation table,
More characters at the bottom of the screen by the x-coordinate enlargement ratio table, and display x coordinate generation unit for the x-direction magnification to produce the x coordinate to be greater is the depth direction perpendicular to the direction,
And display CHR determining means for providing disparity to the character as, the shift amount is the pair of the display device is moved to the right or left of each dot by one dot to be greater at the bottom of the screen by the parallax table,
A game apparatus having the 2D / 3D image conversion processing circuit according to claim 1.

Images