JPH08201775A - Image display method and system and format of display information thereof - Google Patents

Abstract

(57) [Abstract] [Purpose] This is made in view of the development of a display device using a recordable element such as a ferroelectric liquid crystal (FLC) display. (EN) Provided is a moving image display in which the moving speed and smoothness of a moving image with high image quality and large screen and high accuracy are not affected by the capabilities of other components such as a CPU. [Structure] A format of display information in which the display information includes a set of image data changing on the display screen and position data of the changing image data on the display screen. The display information in the predetermined format is sent to the display device, and the display device changes the display of the display change area on the display screen. Also,
The display information further includes display timing information on the display screen of the changing image data, and the timing of the display change is further controlled. Further, information for designating a predetermined area of the display device is stored, the display information of the predetermined format is received, and the display corresponding to the position data in the designated area on the display screen of the display device is changed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display method and system and a display information format thereof, for example, a display device using a recordable element such as a ferroelectric liquid crystal (FLC) display, an image, particularly a moving image. The present invention relates to an image display method and system optimized for displaying an image and a format of display information thereof.

[0002]

2. Description of the Related Art Conventionally, image data for displaying an image is composed of a predetermined line of data for one screen, which is sequentially displayed from the upper right, and is usually composed of an image unit called one frame. Depending on whether or not you want to display more accurate video.

Further, in the display of computer graphics, the display controller reads out the data expanded in the VRAM (video memory) and displays it on the display screen. The display of the moving image in this case is C
The display controller that receives an instruction from the PU or the CPU rewrites the data in the VRAM that is the display area, and the display controller displays the rewritten data on the display.

[0004]

However, in the case of displaying a moving image by the conventional image display method, the smoothness of the movement must be sacrificed as the image quality and the size of the screen are increased. There was a limit that we couldn't expect high image quality and large screen when trying to maintain. One attempt to exceed this limit is moving image compression technology (eg, MPEG). However, the image data must be expanded on the display side, which affects the display speed and has a problem in terms of reproducibility.

The present invention is, for example, a ferroelectric liquid crystal (FLC).
The present invention has been made in view of the development of a display device using a recording element such as a display, and an image display method and system for displaying a high quality moving image with high image quality and a large screen, and its display information. To provide the format. Also,
By increasing the efficiency of data transmission for displaying moving images, the speed and smoothness of moving images are not affected by the capabilities of other components such as the CPU and other system components, and a system and its display information. Provide the format.

Further, the present invention provides an image display method and system for displaying a plurality of moving images with high accuracy on a high-quality, large-screen display screen and a format of the image data thereof. Further, the present invention provides an image display method and system, and a format of display information thereof, which efficiently informs the display side of a change state (timing) of a moving image and can display a faithful motion by an input moving image.

[0007]

In order to solve this problem, the display information format of the present invention is a display information format used in an image display system having a display device using a recording element. It is characterized in that the display information includes a set of image data changing on the display screen and position data of the changing image data on the display screen. Here, the display information further includes a display timing of the changing image data on the display screen.

Further, the image display method of the present invention is an image display method for displaying an image on a display device using a recording element, wherein the display information indicates the image data of the display change area and the change area. The position data is sent to the display device in a predetermined format corresponding thereto, and the display device changes the display of the display change area on the display screen. Here, the predetermined format display information further includes display timing information on the display screen of the changing image data, and the display change is further controlled corresponding to the display timing information.

The image display method of the present invention is an image display method for displaying an image on a display device using a recording element, and stores information designating a predetermined area of the display device, Receiving the image data of the display area, displaying an image on the display screen of the display device, receiving display information of a predetermined format in which the image data of the display change area and the position data indicating the change area are received, and The display corresponding to the position data in the stored designated area on the display screen of the display device is changed. Here, the predetermined format display information further includes display timing information on the display screen of the changing image data, and the display change is further controlled corresponding to the display timing information.

Further, the image display system of the present invention is an image display system having a display device using a recordable element, wherein the control means for controlling the display device is connected to each processing element by a system bus. Format display device using the recordable element by receiving display information of a predetermined format in which image data of the display change area and position data indicating the change area are associated from the system bus of the computer system And a display information transfer means for transferring the format-converted display information to a display device using the recording element. Here, display control means for controlling display on a display device using the recording element is further provided. Further, the predetermined format display information further includes display timing information on the display screen of the changing image data, the display control means,
The display is controlled according to the display timing information. The computer system further includes display information storage means for storing the display information in the predetermined format.

Further, the image display system of the present invention is an image display system having a display device using a recordable element, wherein the control means for controlling the display device sets a predetermined area of the display device. A display device using the recordable element that receives image data of a display area from an area information storage unit that stores specified information and the system bus of a computer system to which each processing element is connected by a system bus. The first display control means for changing the display of the display area on the display screen of
Upon receiving display information in a predetermined format in which the image data of the display change area and the position data indicating the change area are associated with each other,
A second display control means for changing the display corresponding to the position data in the stored designated area on the display screen of the display device using the recording element. Here, the second display control unit further includes a flag group storage unit that stores a flag that specifies the area for which the display is to be changed on a line-by-line basis. Further, the predetermined format display information further includes display timing information on the display screen of the changing image data, and the second display control means controls the display in correspondence with the display timing information. The computer system further includes display information storage means for storing the display information in the predetermined format.

[0012]

【Example】

[First Embodiment] FIG. 1 is a block diagram of an information processing system having a display controller for controlling image display according to this embodiment. In FIG. 1, 101 is a CPU that executes control of the entire information processing system, 102 is an arithmetic processor that supports the arithmetic processing of the CPU 101 at high speed, 103 is a ROM that stores the basic control functions of the CPU 101, 104
Is a main memory used for storing a program executed by the CPU 101 and used as a work area at the time of execution, and 105 is a main memory 10 without going through the CPU 101.
4 and a VRAM described later, or a DMA controller (Direct Memory Access Control) that transfers data between the memories and various devices that compose the system.
ler (hereinafter referred to as DMA)), 106 is an interrupt controller that controls hardware interrupts generated by various devices that make up this system, and 107 is a real-time C-MOS / RAM that stores a calendar clock function and nonvolatile information. A clock, 108 is a backup lithium battery for the real-time clock 17 to function even when the system is powered off.

Further, 109 is a keyboard for inputting character information such as various characters, control information and the like, and 110.
Is a keyboard controller for controlling the keyboard 109, 111 is a hard disk device as an external storage device, 112 is an HDD (HardDis) for performing data transfer and other control between the hard disk device 111 and this system.
k Drive) controller, 113 is a floppy disk device as an external storage device, 114 is an FDD (Floppy Disk Drive) controller for performing data transfer and other control between the floppy disk device 113 and this system,
115 is a mouse as a pointing device, 11
6 is a mouse controller for connecting signals between the mouse 115 and this system, 117 is RS2 for connecting an external input / output device having an RS232C system interface.
32C interface, 118 is a printer interface for connecting an external printer or other external device.

Further, 201 is an FLC display device (hereinafter, also referred to as FLCD) having a display screen using the above-mentioned ferroelectric liquid crystal as a display medium, 202 is an FLCD controller for controlling display on the FLCD 201, and 119 is each of the above. It is a system bus consisting of a data bus, a control bus, and an address bus for connecting signals between devices. FIG. 2 shows the FLCD controller 20 shown in FIG.
2 is a block diagram showing in detail the internal configuration of FIG.

In FIG. 2, 203 is the system bus 1.
A data buffer for temporarily storing the address-added data written from 19, 204 is a synchronization controller 205
Addressed data according to the signal from the FLCD 20
A data conversion device 205 converts the address-added data written from the system bus 119 into 8-bit parallel data to be sent to 1, and 205 is a synchronous controller that detects the timing of the data output to the FLCD 201.

FIG. 3 is a data format of the address-added data, and FIG. 4 is a timing chart of the address-added data output to the FLCD. Among them, the address indicates what line of data is in the vertical direction of the FLCD 201, and the control data indicates whether the address indicates a line or a block. Further, the control data is also used for determining the priority order and wait time shown below. The data is change data of the area indicated by the address and control data. In this embodiment, the address is 12 bits (up to 4096 lines), the control data is 4 bits, and the data is 2 for one line.
4 bits x 1280 (8 bits x 3 colors x 1280 pixels)
Is.

If the address-added data is stored in the main memory 104 or the HDD 111, the CPU 1
01 reads out this addressed data and writes it in the FLCD controller 202, the FLCD controller 2
Addressed data is temporarily stored in the data buffer 203 in 02. The address-added data is converted into an 8-bit parallel data format as shown in FIG. 4 by the data conversion device 204, receives the clock FCLK (20 MHz) and the address / image data identification signal AH / DL from the FLCD 210, Horizontal sync signal HSY
Synchronous controller 20 that outputs NC to FLCD 210
In accordance with 5, the address-added data is output to the FLCD 201. The timing chart at this time is shown in FIG.

The address-added data exists in the HDD 111 or the main memory 104 as it is in the data format shown in FIG. In addition, the FL of this embodiment
Although not described in detail, the CD 201 operates so as to change the display of the line designated by the address of the sent address-added data, and only the data having the display change (movement) can be sent from the system bus. Good. Therefore, the moving image can be displayed with high accuracy without depending on the data transfer capability of the main system.

If the data buffer 203 and the data conversion device 204 are designed in accordance with the storage format of the storage unit such as the HDD 111 of the main system or the main memory 104, the bus width of the system bus, the data transfer method, etc. Can be connected to any system. [Second Embodiment] FIG. 5 shows a second embodiment, and the entire system is the same as that of the first embodiment shown in FIG.

In FIG. 5, reference numeral 206 is a VGA controller which is a graphic controller, 207 is a VRAM for storing video data, 208 is a digital halftone unit DHU, 209 is an FGC for controlling output to the FLCD, and the VRAM 207 is used. It has a rewrite flag that specifies the rewrite line while monitoring. The FGC 209 also creates the timing of the display data to be output to the FLCD.

An address / data separator 210 separates the address-added data into an address and image data. Then, the separated image data is sent to the VGA controller 206, and the separated address is sent to the FGC 209. FIG. 6 is a diagram conceptually showing the inside of the FGC,
Reference numeral 301 is a display screen of the FLCD, and 302 is an area of the capture unit for displaying the data with address.
Reference numeral 303 denotes a rewrite flag register group that indicates whether or not to rewrite one line in the horizontal direction of the display screen, 3
04 is register information in the VGA controller 206,
It is stored in the FGC 209 by performing communication between the FGC 209 and the VGA controller 206. The register information includes the number of lines on the screen, the number of pixels on one line,
It includes screen format information such as border pixel information on the top, bottom, left and right, cursor information, and area information of the capture unit used in this example. 305 is VGA register information 304
And an address converter for controlling the setting / resetting of the flag register group 303 based on the rewriting information from the VRAM monitor 210 and the address information from the address / data separator 210. A VRAM monitor 306 monitors RAS, CAS, and WE of the VRAM 207 to detect rewriting of the display screen.

The operation of the second embodiment will be described here.
First, display data for one display screen is written to the VRAM 207 through the VGA controller 206 via the system bus 119. This display data may be considered as the background. The VRAM monitor 306 in the FGC 209 detects the writing to the VRAM 207, and the VGA controller 206 sends the display data written in the VRAM 207 to the DHU 208 in response to the request from the FGC 209.
The DHU 208 performs color conversion on this display data and F
It is sent to the GC 209. This converted display data is
The FGC209 is synchronized with the FLCD201.
Sent to the FLCD 201, and the display screen is changed.

On the other hand, the address-added data is the address /
When sent to the data separator 210, the separated address is sent to the address converter 305 in the FGC 209,
The vertical address of the changed area is obtained from the VGA register information 304, and the flag register in the area of the capture unit in the flag register group 303 is set. This is the area of the moving image. By setting the flag register, FG
The C209 issues a data transmission request to the VGA controller 206, and the VGA controller 206 sends the image data received from the address / data separator 210 to the VRAM2.
In addition to the display data from 07 (if the area of the capture unit has a horizontal width of one line, only the image data is needed), and the data is sent to the DHU 208. The data from the DHU 208 is sent to the FLCD 201 and displayed in synchronization with the FLCD 201 by the FGC 209.

At this time, the address converter 305 determines that the VG
By referring to the offset address indicating the display area of the capture unit 302 in the A register information 304, the address from the data-added address is added to determine where to display on the display screen, and the desired value of the flag register group 303 is determined. Set the register. Further, by using the control data shown in FIG. 3 to determine the priority order and the wait time when the flags of the registers of the flag register group 303 are set, it is possible to display a motion more faithful to the original image.

In the second embodiment, the image data separated from the address-added data by the address / data separator 210 is directly stored in the VRAM without passing through the VGA controller 206.
The same effect can be obtained by writing in 207. In the second embodiment, in addition to the effect of the first embodiment, a moving image can be displayed with high accuracy even with a more complicated image.

The present invention may be applied to a system composed of a plurality of devices or an apparatus composed of a single device. Further, it goes without saying that the present invention can be applied to the case where it is achieved by supplying a program to a system or an apparatus.

[0027]

As described above, according to the present invention,
An image display method and system for displaying a moving image with high image quality and a large screen and high accuracy, and a format of display information thereof can be provided. In addition, the efficiency of data transmission for displaying a moving image is improved so that the moving speed and smoothness of the moving image are
It is possible to provide an image display method and system and a format of display information thereof which are not affected by the capabilities of other components such as PU.

Further, it is possible to provide an image display method and system for displaying a plurality of moving images with high accuracy on a high-quality, large-screen display screen and a format of the display information thereof. Further, it is possible to provide an image display method and system, and a format of display information thereof, which efficiently informs the display side of a change state (timing) of a moving image and can display a faithful motion by an input moving image.

Therefore, it is possible to record display data in a format suitable for a display system such as an FLC display that is optimized for a storage device such as an FLC display as it is on a hard disk, a CD-ROM, or another recording medium. It was In addition, VR on the FLCD controller
There is no need to have an AM and manage its address, and the configuration is simplified.

[Brief description of drawings]

FIG. 1 is a block diagram of an information processing system using a display controller of this embodiment.

FIG. 2 is a block diagram showing details of the FLCD controller of the first embodiment.

FIG. 3 is a format of data with address according to the present embodiment.

FIG. 4 is a timing chart of transfer of address-added data to an FLCD according to this embodiment.

FIG. 5 is a block diagram showing details of an FLCD controller according to a second embodiment.

FIG. 6 is a block diagram showing details of an FGC according to a second embodiment.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kenichiro Ono 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Tatsuya Sakashita 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Incorporated (72) Inventor Morimoto Hajime 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Taketo Hasegawa 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Hideo Sanbe 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Yoshinori Yamaguchi 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Hiroshi Mori 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc.

Claims (14)

[Claims] 1. A format of display information used in an image display system having a display device using a recordable element, wherein the display information is image data changing on a display screen and the changing image. A format of display information including a set of data and position data on the display screen. 2. The format of display information, wherein the display information further includes display timing of the changing image data on a display screen. 3. An image display method for displaying an image on a display device using a recordable element, wherein predetermined display information is associated with image data of a display change area and position data indicating the change area. An image display method, wherein the image is sent to the display device in a format, and the display device changes the display of the display change area on a display screen. 4. The predetermined format display information further includes display timing information on the display screen of the changing image data, and display change is further controlled corresponding to the display timing information. The image display method according to claim 3. 5. An image display method for displaying an image on a display device using a recording element, comprising storing information designating a predetermined area of the display device and receiving image data of the display area. , Displaying an image on the display screen of the display device, receiving display information of a predetermined format in which image data of the display change area and position data indicating the change area are received,
An image display method comprising changing a display corresponding to the position data in the stored designated area on the display screen of the display device. 6. The predetermined format display information further includes display timing information on the display screen of the changing image data, and display change is further controlled corresponding to the display timing information. The image display method according to claim 5. 7. An image display system having a display device using a recordable element, wherein the control means for controlling the display device is a system bus of a computer system to which each processing element is connected by a system bus. From, from the display information of the predetermined format corresponding to the image data of the display change area and the position data indicating the change area, the format conversion means for converting to the format of the display device using the recording element, An image display system, comprising: a display information transfer means for transferring the display information whose format has been converted to a display device using the recording element. 8. The image display system according to claim 7, further comprising display control means for controlling display on a display device using the recording element. 9. The predetermined format display information further includes display timing information on the display screen of the changing image data, and the display control means controls display in accordance with the display timing information. The image display system according to claim 8, which is characterized in that: 10. In the computer system,
The image display system according to claim 7, further comprising display information storage means for storing display information in the predetermined format. 11. An image display system having a display device using a recordable element, wherein control means for controlling the display device stores area information for storing information designating a predetermined area of the display device. The display area on the display screen of the display device that receives the image data of the display area from the storage means and the system bus of the computer system to which each processing element is connected by the system bus, and uses the recording element. Receiving the display information of a predetermined format in which the image data of the display change area and the position data indicating the change area are received from the first display control means for changing the display of Second display control means for changing the display corresponding to the position data in the stored designated area on the display screen of the display device using the element. The image display system according to claim and. 12. The image display system according to claim 11, wherein the second display control means further comprises a flag group storage means for storing a flag for designating the area for which the display is to be changed on a line-by-line basis. . 13. The predetermined format display information further includes display timing information on the display screen of the changing image data, and the second display control means controls the display in correspondence with the display timing information. The image display system according to claim 11, wherein the image display system comprises: 14. In the computer system,
The image display system according to claim 11, further comprising display information storage means for storing display information in the predetermined format.