JPS62136692A - Display control system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a single display control force expression, particularly in a computer system, when displaying a high-definition full-color image from a data file such as a magnetic disk or when re-editing the image. The present invention relates to a display control method suitable for covering the reduction in responsiveness.

[Background of the invention]

With the advancement of computer systems, the types of data displayed on terminal devices such as displays have expanded from alphanumeric characters to 2 kanji, 2 figures, and 9 images, and the demand for higher resolution has led to the need for data to be transferred to terminal devices for 2 displays. The amount continues to increase. In response to this, efforts are being made to increase the speed of memory elements and external storage devices, and to increase the speed of data buses, as methods to realize high-speed data transfer. However, the data that is handled as a high-definition full-color image is 25 times larger than one image.
There are 6 kilobytes to 1 megabyte, which are read from the storage device and transferred to the frame memory.

Therefore, it takes a lot of time to convert it into a display format and transfer it to a display device. When data is stored in a compressed format, the time required to read data from the storage device can be shortened, but since a new process for restoring the compressed format is added, the processing time is not reduced much.

In the case of text data and graphic data, as with compressed image data, character code strings read from the storage device and graphic drawing commands are expanded into display format bitmap data, and then transferred to the display device. Transfer processing requires a lot of processing time.

Furthermore, recent computer systems have been developed that have a multi-window function that displays many types of information simultaneously on the same screen and executes a certain process while comparing and referencing the displayed contents. In such a multi-window display, it is desirable to frequently adjust the display position and size of each window, their vertical relationship, etc., to always obtain the best display content. Therefore, the display state changing process as described above must always be instantaneously realized in response to a user's request. However, in the case of conventional multi-ride display, it is difficult to hold display format data corresponding to all windows being displayed due to memory capacity constraints. In reality, we only have display format data that corresponds to one or two windows that are currently being processed, and other data is stored in external memory such as a magnetic disk (or In many cases, it is held in the main memory (in rare cases).

In this case, when a currently invisible portion appears in the visible range due to a change in window position, size, or overlapping relationship, it is necessary to read the window data from the file and re-edit it into a display format.

Since the processing time required for this rereading and reediting is long, the responsiveness of window conversion etc. decreases. As a method to improve this point, a method has been proposed that limits the range of rereading and reediting to only the necessary parts of the page (
(Refer to Japanese Patent Application No. 59-87686). According to this method, the amount of data for a 1 m collection of data readout is reduced, so
The processing time required for this can be shortened. However, on the other hand, a new process is added to determine which part of the screen requires data re-reading and re-editing.

When a large number of windows overlap in a complicated manner, this determination process becomes complicated and requires a lot of processing time.

As described above, in the conventional method, it takes time to read out or re-edit and display a high-definition full-color image from a data file, and it may not be possible to sufficiently improve responsiveness.

[Purpose of the invention]

An object of the present invention is to solve such conventional problems, to compensate for the decrease in display responsiveness in readout or re-editing of high-v1 fine full-color images from magnetic disks, etc., with a simple configuration, and to improve operator comfort. An object of the present invention is to provide a display control method that improves display responsiveness to.

[Summary of the invention]

In order to achieve the above object, the display control method of the present invention includes:
In a computer system that displays high-quality images on a display device using data files that store digital data, a video file that stores video data of a television signal, a combination of the data file and the output signal from the video file, A conversion means for converting the format into a common format and a switching means for switching the output signals from the two files are provided, and between the data reading from the data file and the editing process, the switching means converts the output from the data file. The feature is that the output signal from the video file is displayed by switching the signal.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

In this embodiment, the first case is when controlling the entire display screen.
As an example, and a case where a part of the display screen is controlled (multi-window display control) will be explained separately as a second example. Here, in the first embodiment and the second embodiment, a new video file such as a video disk is provided in the computer system, and the data file such as a magnetic disk and the newly added video file are used to During the reading of high-definition full-color image data from the data file and the data editing process, the output signal from the video file (here, the video file must have the same representation format data as the data file) is By outputting and displaying at high speed, it is possible to temporarily compensate for a decrease in display responsiveness caused by reading data from a data file or editing the data.

First, the present invention will be explained in detail.

Displaying data from a data file on a CRT display takes time to complete display due to data transfer speed limitations. On the other hand, displaying a video file on a CRT display can be achieved instantly because video files are originally intended for displaying moving images. However, data from a data file and data from a video file are in different formats, so simply adding a video file such as a video disk to a computer system equipped with a data file will not work. and video file data on the same CRT
i.e. the data from the data file cannot be displayed on the display.

3[jtTTL level, its horizontal frequency is 15~3
There are many types in the 0kHz range. On the other hand, the output signal from the video file is an analog signal whose horizontal frequency matches the television signal (NTSC) and is 1
The frequency is 5.75kHz.

In this way, in order to display two signals with different output levels and frequencies, it is necessary to convert both signals into a common data format. Therefore, the computer system described above is newly provided with a conversion means for converting the data formats of the data file and the video file into a common data format, and a switching means for switching data from both files. In a computer system having such a configuration, data from a video file is temporarily displayed on a CRT display while reading data from a data file and composing screen data on the converting means. When the configuration of the screen data is completed, signal switching is performed by the switching means.

By displaying data from a data file on a CRT display, responsiveness can be improved without reducing resolution.

Furthermore, in a computer system equipped with a multi-window function, a means for extracting data from a data file and a portion of data from a video file is added, and the above computer system configuration is slightly modified to extract data from a data file. During readout and re-N collection processing, data from the video file is superimposed and displayed to improve display responsiveness.

Hereinafter, (i) the first embodiment and (ii) the second embodiment will be described in detail.

(i) First Embodiment FIG. 1 is a main configuration diagram of a computer system showing a first embodiment. Here, 1. The present invention is characterized in that the display is controlled by switching between a data file and a video file.The configuration of the part related to output display is shown, and other configurations (for example, printers, keyboards, etc.) are omitted. Street.

In FIG. 1, 1 is a data file 2. 2 is a data file such as a magnetic disk, and 3 is a signal converter provided according to the present invention, which converts the output signal of the data file 2 into a horizontal frequency 15
．． The signal level is converted to 75kHz and the signal level is converted to 0.7VP-P and sent to the signal changeover switch 7 as a common signal. 4 is a video file such as a video disc, 5 is the output of video file 4 (NTSC), that is, the horizontal frequency is 15.75
This is a decoder that converts into RGB individual signals with a kHz level and a signal level of 0.7VP-P. 6 is data file 2
This is a synchronization signal generator for matching the synchronization between the signal from the video file 4 and the signal from the video file 4. The synchronization signals (black burst signal, decoded synchronization signal, and subcarrier signal) generated by this are sent to the signal converter 3. Video file 4. The signals are respectively turned on to the signal changeover switch 7. This results in
The output signals of each device and the signals sent to the CRT display 8 can all be synchronized, thereby preventing synchronization errors when switching screens.

7 is a signal changeover switch provided according to the present invention;
According to the switching signal lO from the control device 1, either the signal from the data file 2 or the signal from the video file 4 is selected and displayed.

8 is a display device (for example, a CRT display) for outputting and displaying the data from the data file 2 or the data from the video file 4; 9 is a display device for outputting and displaying the data from the data file 2 or the data from the video file 4; (which has two systems, data file 2 and video file), the data of video file 4 is changed in synchronization with the change. That is, the data processing is performed on the data from the data file 2, and the data after the data processing is obtained as the output of the data file 2, so the changed data is taken out from the signal converter 3 and taken out. The output signal is converted into a data format for video file 4 (NTSC) and sent to video file 4.

FIG. 2 is an internal configuration diagram of the signal changeover switch 7 according to this embodiment. This is for switching and displaying the signal from the data file 2 and the signal from the video file 4.

In FIG. 2, 21 is a blanking synchronization controller, 22
is a signal inverter, 23.24 is a signal breaker (AND circuit)
, 25 is a signal adder. below.

Details of signal switching control will be explained according to FIG.

First, the blanking synchronization controller 21 is a controller! i! 1
The switching signal 10 from the synchronizing signal generator 6 and the blanking (BLK) signal 11 from the synchronizing signal generator 6 are received. This is the blanking period (horizontal or vertical retrace period) when switching the input signal.
The switching signal 10 is blanked (BLK
) This is to synchronize with the signal 1 construction. As a result, the switching signal lO synchronized with the blanking (BLK) signal 11
The two systems of video input signals are controlled to turn on and off. That is, the first video input signal (CHI) is switched by the switching signal 11, while the second video input signal (CHI) is switched.
For the signal (CH2), the switching signal 10 is inverted by the signal inverter 22 and switched. As a result, one of CHI or CH2 is always on and the other is off. By adding the two systems of video signals using a signal adder (OR circuit) 25, CHI and CH2
You can select either one.

Next, a processing method for switching display contents in a computer system configured as described above will be explained.

FIG. 3 is a diagram showing the flow of display control and screen changes according to the first embodiment. This is a CRT display 8
This figure shows an example of display when converting one piece of data to another data. Below, the third
This will be explained according to the diagram.

First, as shown in the upper part of the figure, the initial state is data file 2. Each data from video file 4 is rAJ. The signal changeover switch 7 selects the data file 2 side. That is, the CRT display 8 displays data "A" from the data file 2 (in FIG. 3, it is surrounded by a double frame).

(the same applies hereafter) is displayed on the CRT display 8. Therefore, first of all, search for video file 4,
Next, rBJ, which is the data to be displayed, is determined. after that,
Change the signal changeover switch 7 to the video file 4 side.

As a result, the CRT display 8 displays "data rB" from the video file 4. These switching processes can be executed instantaneously, and since the display signals of r A J and r BJ are synchronized, switching on the 5 screens is instantaneous, and there is no possibility of synchronization disturbances such as fluctuations or flickers on one screen. Does not occur. Next, data “B” from data file 2
is read out and compiled into M collections in display format.

When editing is completed, the signal changeover switch 7 is again switched from the video file 4 side to the data file 2 side.

Along with this, the display is switched to rBJ from data file 2. This switching is also instantaneous, like the previous one, and no synchronization disturbance occurs.

Through the above processing, the primary data could not be displayed until the reading/editing from data file 2 was finished, but by adding a new video file, new data can be displayed instantly. .

In this way, in the first embodiment, the output from the data file and the output from the video file are converted into the same signal format, and by switching and displaying these, the response to the information display request is achieved. A display with good quality can be achieved. Furthermore, the video memory of a general personal computer can be used for the above signal format conversion.

It can be realized inexpensively.

(11) Second Embodiment FIG. 4 is a main configuration diagram of a computer system showing a second embodiment. Since this system is equipped with a multi-window function, the weak configuration is different from that of the first embodiment. Further, in the embodiment of the water bottle 2, the structure of the portion related to display control will be explained in the same way as the first embodiment, and the other structures mentioned above will remain the same as before.

In FIG. 4, 40 is a control device, and this control device 40 reads data from a data file 41, develops it on a video memory 42, and converts it into display format data. However, since this file reading and display expansion processing takes a long processing time, the data of the video file 44 is temporarily displayed on the CRT display 49 during the reading and expansion processing of the data file 41 (details will be described later).
.

41 is a data file such as a magnetic disk, and 42 is a video memory for displaying and developing the data in the data file 41 into bitmap data. In the case of multi-window display, the data displayed on the display 49 is often only a part of the original data, with the magnification changed. To accommodate this, only a part of the output of the data file 41 is displayed. The video memory 42 is used for extracting and enlarging/reducing the image. Further, to explain the method, all data from the data file 41 is expanded onto the video memory 42, and when the expansion result is read out, partial extraction is realized by reading out only the necessary portion.

Furthermore, enlargement/reduction is realized by reading out every few pixels or reading out the same pixel multiple times. expansion·
At the time of reduction, by controlling the skipping step and the number of times of multiple readings on a pixel basis, it is possible to realize not only an integer magnification but also a more detailed magnification specification. Further, when reading out a pixel, instead of simply reading out only the pixel concerned, the result of an operation such as a logical sum with neighboring pixels is read out, thereby preventing deterioration in image quality due to enlargement or reduction.

Reference numeral 43 denotes a data converter provided according to the present invention, and this data converter 43 determines the timing for reading out the contents of the video memory 42 based on the timing signal sent from the synchronizing signal generator 47 instead of the input timing. and convert the horizontal frequency to 15.75kHz,
Furthermore, the output level is converted to 0.7Vp-p. 44
4 is a video file such as a video disk, and 45 is a decoder. The composite output signal is separated for each color independently.

46 is a video processing section provided according to the present invention, and this video processing section 46 has a frame memory similar to the video memory 42, converts the output from the decoder 45 from analog to digital, and writes it into the frame memory. By using the same reading method for this frame memory as the method for the video memory 42 described above, partial reading, enlargement, and reduction of video data can be realized. 47 is data file 41
This is a synchronization signal generator for matching the synchronization of the signal from the video file 44 with the signal from the video file 44.

A video mixer 48 is provided according to the present invention, and is used to switch between the signal from the data file 41 and the signal from the video file 44 and display one of the signals. 49 is a display device for displaying data (
For example, a CRT display).

FIGS. 5(a) and 5(b) are diagrams showing an example of the internal structure of the video mixer 48 (FIG. 7') and a multi-window display screen according to the second embodiment. Here, the first video input signal (
There are two systems of image input: CHI) and a second video input signal (CH2), and an example is shown in which the CH2 image is superimposed on the CHI image.

The superimposed position is (Xl.) as shown in FIG. 5(b).

Let Yl)p (Xl r Y2 ) be a rectangular area with both diagonal points. However, the main scanning direction of the CRT display 49 is the X-axis, and the sub-scanning direction is the Y-axis.

In FIG. 5, 51 is a synchronous decomposer, 52 is a pixel counter that counts pixels (Cm points) on the display screen,
53 is a raster counter that counts one horizontal row of pixels (hereinafter referred to as raster); 54 is a pixel counter 52
55 is a comparator that compares the counter value of the pixel counter 52 with the position of Xt on the display screen, 56 is a raster counter 53
57 is a comparator that compares the counter value of the raster counter 53 with the position of Y2 on the display screen, 58-60 are signal inverters, 61-64 66 is a signal breaker (AND circuit) and a signal adder (OR circuit).

The video mixer 48 receives synchronization signals from the synchronization signal generator 47, that is, a decoded synchronization signal (CS), a subcarrier signal (SC), and a blanking signal (BLK).
Then, the synchronization decomposer 51 generates a synchronization signal 501 . for each pixel. Raster unit synchronization signal 502. and a frame-by-frame synchronization signal 503. The pixel counter 52 receives a pixel-by-pixel synchronization signal 501 and counts the number of pixels. This is initialized with a raster unit synchronization signal 502. Similarly, the raster counter 53
The system receives a synchronization signal 502 for each raster, counts the number of rasters, and uses a signal 503 indicating the end of the frame to
Initialized. Comparators 54 and 55 compare the values of regions X 1 r X 2 overlapping CH2, respectively.

The magnitude is compared with the output of the pixel counter 52.

That is, signal 504 indicates that the pixel counter value is
signal 505 indicates that the pixel counter value is less than Xl. signal 50
A signal 508, which is the AND of 4 and 505, indicates that the main scan is within the overlapping region. Similarly, raster counter 5
An AND signal 509 resulting from comparing the output of 3 and -Y 1 rY2 indicates that the sub-scan is within the overlapping region. A signal 510, which is the AND of these signals, indicates that the scan is within the overlap region.
Switches between CHI and CH2 to realize switching of image signals.

In a computer system having such a configuration, a process of changing the window display state in multi-window display will be explained.

FIG. 6 is a diagram showing a display control flow and screen transition according to this embodiment. Here, an example will be described in which window B is superimposed on window A, and the vertical relationship is changed to display window A on top. The explanation will be given below according to FIG.

First, data for window A is obtained by searching the video file 44. After the data corresponding to window A is partially cut out and subjected to enlargement/reduction processing by the video processing unit 46, it is inputted to the video mixer 48 as CH2. The video mixer 48 determines the size of CH2, that is, (Xz.

Set YIL (X21Y2) and overlap it with CHI (output window B of data file 41 overlaps window A). Thereby, a desired state can be obtained on the CRT display. after that,
Reads the data corresponding to window A from the data file 41, edits it into a display format, enlarges it, reduces it, etc.
After finally configuring the screen format data, the video mixer 48 is switched to return to the desired display format.

On the other hand, when there are three or more windows, in FIG. 4, the data to the CRT display 49 is branched and stored in the video memory 42, and the above processing for the number of windows 2 is returned in green. This makes it possible to cope with an increase in the number of windows. In addition, if it is known in advance that there are only a few window sizes, instead of the video processing unit 46 having an enlargement and reduction function, all possible magnification data are
It can be stored in the video file 44 in advance.

This makes it possible to further improve responsiveness.

In this way, in the second embodiment, even in display control with a multi-window display function, by using the video file 44, the data of the video file 41 can be edited during data re-editing processing of the data file 41, etc. can be accessed to the display device 44 at high speed and displayed in a superimposed manner.
Responsiveness can be improved.

〔Effect of the invention〕

As explained above, according to the present invention, by providing a video disk (video file), it is possible to compensate for the decrease in display responsiveness during reading or re-editing of a high-definition full-color image from a magnetic disk or the like. Display responsiveness to the operator can be improved.

[Brief explanation of drawings]

FIG. 1 is a main configuration diagram of a computer system showing the first embodiment, FIG. 2 is an internal configuration diagram of the signal changeover switch in FIG. 1,
FIG. 3 is a diagram showing the flow of display control and screen changes according to the first embodiment, and FIG. 4 is a diagram showing the main configuration of the computer system according to the second embodiment. 5(a) and 5(b) are diagrams showing an example of the internal configuration and display screen of the video mixer in FIG. 4, and FIG. 6 is a diagram showing the flow of display control and screen transition according to the second embodiment. It is. 1.41: Control device, 2,42: Data file, 3:
Signal converter, 4, 44: Video file. 5.45: Decoder, 5, 47: Synchronization signal generator, 7:
Signal changeover switch, 8.47: CRT display, 9
: Encoder, 21 nibranking synchronous controller, 22:
Signal inverter, 23, 24: Signal breaker, 25: Signal adder, 42: Video memory, 43: Data converter, 46:
Video processing unit, 48: video mixer, 51: synchronous decomposer,
52: Pixel counter, 53: Raster counter, 54
~57: I" Agent Bu 2 Upper Short Sword I yj Noneo Bō 11 Bō 2 Otsu No. 34 Fig. 4

Claims (2)

[Claims] (1) In a computer system that displays high-quality images on a display device using data files that store digital data, a video file that stores video data of a television signal, a video file that stores video data of a television signal, a video file that stores video data of a television signal, a video file that stores video data of a television signal, and A conversion means for converting the format of the output signal into a common format and a switching means for switching the output signal from the two files are provided, and between data reading from the data file and editing processing, the switching means converts the data file into a common format. A display control method characterized in that the output signal from the video file is displayed by switching the output signal from the video file. (2) In a computer system that displays a high-quality image on a display device using a data file storing digital data, a video file storing video data of a television signal, the above data file and the A conversion means for converting the format of the output signal into a common format, a switching means for switching the output signal from the two files, and a means for cutting out a part of the output signal from the two files, respectively, are provided, and the data file is During data reading from the data file and re-editing process, the cutting means cuts out a part of the output signal from the data file, and the switching means switches the cut output signal from the data file to output the signal from the video file. A display control method characterized by displaying an output signal in a superimposed manner.