JP2001067062A - Image display device, its method, and record medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique for enhancing the responsiveness of a substituted image displayed in a background image so as not to give a user a sense of incompatibility. SOLUTION: This image display device is equipped with not only a first imaging area 41 and a second imaging area 42 constituting a frame double buffer, but also a third imaging area 43 and a copying area 44. An image 51 to be successively rendered in the first imaging area 41 and on the second imaging area 42 is rendered in the third imaging area 43 and copied into the copying area 44. The image 51 is successively copied into the first imaging area 41 and second imaging area 42, and additional images 61, 62 are rendered in the first imaging area 41 and in the second imaging area 42, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique effective when applied to display control of an overwritten image displayed in a background image by frame buffering.

[0002]

2. Description of the Related Art Conventionally, in image display using a raster scan type display, a frame double buffering type is generally adopted. In this method, two rectangular areas are provided on a frame buffer, and while image data is being drawn in one area, image data drawn in another area is displayed on a display. When the drawing is completed, the drawing and the display are exchanged, and by repeating this, the image being rewritten is not displayed.

[0003]

However, in such a double buffering system, it takes a long time to draw when the capacity of the image is large. For example, when there is a selection menu in the image, it follows the selection input of the menu. It is difficult to secure the response.

[0004] The present invention has been made in view of such a point, and it is an object of the present invention to provide a technique that enhances the response of an overwritten image displayed in a background image and does not give a user a sense of discomfort.

[0005]

A first means of the present invention is as follows.
A dual image display device for displaying an image using a frame buffer, comprising: an image data recording unit that records image data; and an image data recorded in the image data recording unit, the image data recording unit sequentially reading the image data, Drawing means for drawing alternately in a drawing area and a second drawing area; display control for alternately displaying image data of the first drawing area and the second drawing area drawn by the drawing means on a display means Means for drawing the same image data from the sequentially read image data, the image data being continuously drawn in the first drawing area and the second drawing area, in a third drawing area of the frame buffer. And copying means for copying image data of the third drawing area drawn by the drawing means to a copy area of the frame buffer, The copying means sequentially copies the image data copied to the copy area to the first drawing area and the second drawing area, and the drawing means copies the first drawing area copied by the copying means. Alternatively, the image data to be added to the second drawing area is sequentially read from the image data recording means, and additional drawing is sequentially performed in the drawing area. The display control means performs the copying and the additional drawing of the first drawing An image display device characterized by sequentially displaying image data of an area and the second drawing area on a display unit.

According to the means of the present invention, image data to be successively drawn in the first and second drawing areas is drawn in advance in the third drawing area, and the image data is written in the first and second drawing areas. Copy to In the first and second drawing areas, the respective additional portions are additionally drawn and displayed on the display means. As a result, the processing time for image display can be reduced.

A second means of the present invention is an image display method for displaying an image using a frame buffer, wherein image data is recorded in the image data recording means, and the image recorded in the image data recording means is stored. The data is sequentially read and alternately drawn in a first drawing area and a second drawing area on the frame buffer, and the image data of the drawn first drawing area and the second drawing area are alternately displayed. The same image data to be displayed on the display means and continuously drawn in the first drawing area and the second drawing area among the sequentially read image data is stored in a third drawing area of the frame buffer. Drawing, the third drawing
The image data of the drawing area is copied to a copy area of the frame buffer, the image data copied to the copy area is sequentially copied to the first drawing area and the second drawing area, and the copied The image data to be added to the first drawing area or the second drawing area is sequentially read from the image data recording means, and additional drawing is sequentially performed in the drawing area, and the copy and the additionally drawn first drawing area or An image display method characterized by sequentially displaying image data of the second drawing area on a display means.

According to the means of the present invention, the image data drawn in the third drawing area is copied to the copy area, and the image data is used in the first and second drawing areas, so that a display without a sense of incongruity is provided. You can get a response.

According to a third aspect of the present invention, there is provided a recording medium recording a program for displaying an image using a frame buffer, wherein image data recorded for display and image data recorded in the image data are stored. A drawing step of sequentially reading and drawing alternately in a first drawing area and a second drawing area on the frame buffer; and the first drawing area and the second drawing area drawn in the drawing step.
A display control step of alternately displaying the image data of the drawing area on the display means; and the drawing step includes, among the sequentially read image data, the first drawing area and the second drawing area. A copy step of drawing the same image data to be drawn in a third drawing area of the frame buffer, and copying the image data of the third drawing area drawn in the drawing step to a copy area of the frame buffer. The copying step sequentially copies the image data copied to the copy area to the first drawing area and the second drawing area, and the drawing step includes the first drawing copied by the copying step. The image data to be added to the area or the second drawing area is sequentially read from the image data recording means, and And following additional drawing, the display control step, the copy and the additional drawn first
And a display medium for sequentially displaying image data of the drawing area or the second drawing area on a display means.

Here, the recording medium may be any medium such as a CD-ROM, a memory card, a floppy disk, a magnetic disk, an optical disk, and a magneto-optical disk.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an image display device of the present invention as a video display device 5 (hereinafter simply referred to as “display 5”).
Shows the state connected to.

The image display device main body 1 includes a CD-ROM (Comm) (not shown) under a cover 2a of the CD-ROM drive.
2 is mounted, and provides programs and data. Also, a controller 3 is connected as an external input device and a memory card 4 as an external storage device.

The display 5 uses a display symbol output from the image display device main body 1 as a display image and a speaker 6.
Is for providing voice symbols to the player as voice, and a general household television receiver can be used.

The controller 3 has various operation buttons. A left / right / up / down direction key 7 is provided on the left side of the controller 3 when viewed from the plane, and the displayed character is moved in a desired direction by pressing the corresponding direction key, and the cursor is moved on the selection screen. It is used to do things. On the other hand, on the right side of the controller 3, there is a circle button 8 used for determination input, and a cross button 9 used for cancel input. In addition, the 囗 button 10 and the △ button 11 are used for inputting a specific command. A start button 12 is provided at the center of the controller 3 and is used for temporarily stopping and restarting the program, and a select button 13 is used for switching screens.

FIG. 2 shows a hardware block diagram of the image display device. The image display device has a CPU (Ce
and a GPU (Graphic Proc) that performs drawing on the frame buffer 28.
and a SPU (Sound) that generates music, sound effects, and the like.
d Processing Unit) 31 and a CD for controlling the CD-ROM 2
A ROM control unit, a communication control unit for controlling an instruction input from the controller 3 by the player, and an input / output with the memory card 4, and the like.

The control system includes the CPU 21 and interrupt control and DMA (Dynamic Memory Access).
s) Peripheral device control unit 22 for controlling transfer, and RAM (Random Access Mem) as main storage device
ory) 23, a main storage device, a graphic system,
ROM (Read O / O) in which a program such as an operating system for managing a sound system is stored.
nly Memory) 24. Also CP
U21 is provided with an oscillation circuit for generating a clock signal and a frequency dividing circuit for dividing the clock signal to generate a clock signal.

The above-mentioned graphic system is a CD-RO
An image decoder 25 for decoding the compressed and encoded image data read from M2, and an image decoder 25
GTE (Geometry Tra) that performs processing such as coordinate calculation and rendering on the image data decoded by
nsfer Engine) 26 and a GPU 27 that performs drawing such as shading, texture mapping, and raster processing based on the data calculated by the GTE 26.
A frame buffer 28 for storing an image drawn by the GPU 27, a decompression device 29 for decompressing the image data and performing digital / analog conversion,
An NTSC encoder 30 that converts the video signal into a C-system video signal and outputs it to the display 5 is provided.

The SPU 3 generates music, sound effects and the like based on instructions from the CPU 21.
1, a sound buffer 32 for storing waveform data and the like by the SPU 31, and a DAC (Digital) for decoding audio data reproduced by the CD-ROM device 34.
(Analog Converter) 33 and a speaker 6 for outputting the decoded data.

The above-mentioned CD-ROM control unit comprises a CD-ROM
2 for reproducing programs, data, etc. stored in
ROM device 34 and CD for noise filtering
-DSP (CD-Digital Signal Pr)
processor 35, a decoder 36 for decoding, for example, programs and data stored with an error correction code added thereto, and a reproduction data from the CD-ROM 2 by temporarily storing reproduction data from the CD-ROM device 34. A buffer 37 for speeding up reading.
Image data and audio data reproduced and decoded by these devices are sent to a graphic system and a sound system via a bus 20, respectively.

The communication control unit includes a communication control 38 for bidirectionally controlling communication with the CPU 21 via the bus 20, a controller 3 for inputting an instruction from a player, and an external recording device for storing program setting data and the like. A memory card 4 is provided as a device.

The program stored in the CD-ROM 2 is a video game in which a player operates a player character displayed on a display to move on a field and solve a mystery.

FIGS. 3 to 6 show one example of the state of the drawing area on the frame buffer for displaying the above-mentioned video game screen over time. In FIG. 3, the background image 51 is drawn in the third drawing area 43, and the background image 51 is copied to the copy area 44. In FIG. 4, the background image 51
Is copied to the first drawing area 41. First drawing area 4
In step 1, a menu image 61 is additionally drawn. At the same time, in the third drawing area 43, drawing of the next background image 52 is started. In FIG. 5, the background image 51 and the menu image 61 of the first drawing area are displayed on the display. Here, when a selection input for the menu image 61 is made, the background image 51 of the copy area 44 is copied to the second drawing area 42,
In the second drawing area 42, the next menu image 62 is additionally drawn. Meanwhile, in the third drawing area, the next background image 5
Continue drawing 2. In FIG. 6, a background image 51 and a menu image 62 of the second drawing area 42 are displayed on a display. Further, the background image 52 that has been drawn in the third drawing area is copied to the copy area 44. Here, the menu image 6
2 is selected, the background image 52 is moved to the first position.
Is copied to the drawing area 41, and the next menu image 63 is additionally drawn in the first drawing area 41. Hereinafter, FIGS. 5 and 6
Is repeated.

FIG. 7 shows a functional block diagram of the present embodiment. The frame drawing unit 71 includes an image data recording unit 72
, The background image data is sequentially read and drawn in the third drawing area of the frame buffer unit 73. The copy unit 74
The background image data drawn in the third drawing area is copied to a copy area, and further copied from the copy area to a first drawing area or a second drawing area which is a drawing number. The display control unit 75 alternately displays, on the display 5, images that have been drawn in the first drawing area or the second drawing area.
Here, when the input receiving unit 76 receives an input from the controller 3, the frame drawing unit 71 reads the menu image data from the image data recording unit 72 and sets the first drawing number.
Is additionally drawn in the drawing area or the second drawing area. The display control unit 75 displays the menu image data and the background image data on the display 5.

FIG. 8 is a flow chart showing this. That is, the frame drawing section 71 reads the background image data from the image data recording section 72 (101) and draws the background image data in the third drawing area of the frame buffer section 73 (10).
2). The copy unit 74 copies the background image data to a copy area (103). Further, the copy unit 74
Alternatively, a copy is made to the drawing area of the drawing number in the second drawing area (104). The display control unit 75 displays the copied background image data on the display 5 instead of the currently displayed image data (105). Step 101 to 1
The steps up to 05 are repeated until the reading of the image data is completed (106). Here, when the button of the controller 3 is pressed, the input receiving unit 76 receives the interrupt processing, the frame drawing unit 71 reads the menu data from the image data recording unit 72 (201), and draws the menu data in the first or second drawing area. Additional drawing is performed in the number drawing area (202).

As described above, according to the present embodiment, a menu display response to an input can be secured by drawing background image data having a large data amount and taking a long time to draw in the third drawing area.

In the present embodiment, the background image may be a still image or a moving image.

[0027]

According to the present invention, it is possible to provide a technique that enhances the response of an overwritten image displayed in a background image and does not give a user a sense of discomfort.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a state where a main body of the present invention is connected to a display device.

FIG. 2 is a block diagram showing a hardware configuration centering on a main body.

FIG. 3 is an explanatory diagram for explaining a drawing state on a frame buffer;

FIG. 4 is an explanatory diagram for explaining a drawing state on a frame buffer;

FIG. 5 is an explanatory diagram for explaining a drawing state on a frame buffer;

FIG. 6 is an explanatory diagram for explaining a drawing state on a frame buffer.

FIG. 7 is a functional block diagram for explaining the embodiment;

FIG. 8 is a flowchart for explaining an embodiment.

[Explanation of symbols]

 1 Body 3 Controller 5 Display 41 First Drawing Area 42 Second Drawing Area 43 Third Drawing Area 44 Copy Area

Continued on front page F-term (reference) 2C001 BA02 BA05 BC00 BC10 CA01 CB01 CB06 CC02 CC08 5C082 AA06 AA24 AA31 AA37 BA12 BB15 BB22 BB26 CA81 DA54 DA64 MM02 9A001 BB03 KK31

Claims (3)

[Claims] 1. An image display apparatus for displaying an image using a frame buffer, comprising: an image data recording unit for recording image data; and image data recorded on both of the image data recording units, the frame buffer comprising: Drawing means for drawing alternately on the first drawing area and second drawing area above, and display means for alternately displaying the image data of the first drawing area and the second drawing area drawn by the drawing means Display control means for displaying the image data in the frame buffer in the frame buffer, the image data being sequentially drawn in the first drawing area and the second drawing area among the sequentially read image data. A copy in which the image data of the third drawing area drawn by the drawing means is copied to a copy area of the frame buffer; And the copying means sequentially copies the image data copied to the copy area to the first drawing area and the second drawing area, wherein the drawing means copies the image data copied by the copying means. Sequentially reading image data to be added to the first drawing area or the second drawing area from the image data recording means;
The additional drawing is sequentially performed on the drawing area, and the display control unit sequentially displays the copy and the additionally drawn image data of the first drawing area and the second drawing area on a display unit. Image display device. 2. An image display method for displaying an image using a frame buffer, wherein image data is recorded in image data recording means, and the image data recorded in the image data recording means is sequentially read. Rendering alternately in a first rendering area and a second rendering area on a buffer, displaying the rendered image data of the first rendering area and the second rendering area on display means alternately, Among the sequentially read image data, the same image data to be continuously drawn in the first drawing area and the second drawing area is drawn in a third drawing area of the frame buffer. The image data of the third drawing area is copied to a copy area of the frame buffer, and the image data copied to the copy area is copied to the first drawing area and the second drawing area. 2 is sequentially copied to the second drawing area, the copied image data to be added to the first drawing area or the second drawing area is sequentially read from the image data recording means, and the additional drawing is sequentially performed in the drawing area. An image display method, wherein image data of the first drawing area or the second drawing area on which the copy and the additional drawing are performed are sequentially displayed on a display unit. 3. A recording medium on which a program for displaying an image using a frame buffer is recorded, wherein image data recorded for display and image data recorded on the image data are sequentially read.
A drawing step of drawing alternately in a first drawing area and a second drawing area on the frame buffer; and alternating image data of the first drawing area and the second drawing area drawn in the drawing step A display control step of displaying the image data on the display means; and the drawing step includes, among the sequentially read image data, the same image data to be continuously drawn in the first drawing area and the second drawing area. A drawing step of drawing in a third drawing area of a frame buffer; and copying the image data of the third drawing area drawn in the drawing step to a copy area of the frame buffer. The image data copied to the area is sequentially copied to the first drawing area and the second drawing area, and the drawing step is performed. Reads sequentially from the image data recording means image data to be added to the first drawing area or the second drawing area copied in the copying step, and sequentially draws additional image data in the drawing area; Is a recording medium in which a program is recorded, wherein image data of the first drawing area or the second drawing area on which the copy and the additional drawing are performed are sequentially displayed on a display means.