CN101650926B - Partial magnification method of display screen and electronic device using the method - Google Patents

Abstract

A method for partially magnifying a display screen, which defines a part of the display screen as a magnification area and the rest of the area as a non-magnification area, captures video data displayed in the non-magnification area of the display and stores it in a non-magnification data storage block of a video memory corresponding to the non-magnification area, captures video data displayed in the magnification area and magnifies it, and stores it in an enlargement data storage block of the video memory corresponding to the magnification area, then reads the video data stored in the non-magnification data storage block and the enlargement data storage block of the video memory and sends them to the display for display.

Description

Partial magnification method of display screen and electronic device using the method

technical field

The invention relates to a method for displaying a display screen, in particular to a method for partially enlarging a display screen.

Background technique

The new generation of notebook computers adopts different liquid crystal display sizes and different resolution methods from existing notebook computers. Most of the liquid crystal display resolutions used in existing notebook computers are 1024×768 pixels, while new notebook computers will use wide-screen displays, such as liquid crystal displays with a resolution of 1600×600 pixels, and provide users with new How to use it. And because the new generation of wide-screen LCD displays are wider left and right, narrower at the top and bottom, and adopt high resolution, the pitch between pixels is narrower than that of ordinary LCD displays, making the fonts displayed exquisite but small, which makes users feel more comfortable. When browsing or editing text, the eyes are easy to feel uncomfortable because the font is too small, which will affect the browsing of files or text editing.

Therefore, if the contents of the partial display area or editing (operation) area of this wide-screen display with wide left and right, narrow up and down or even a general display can be partially enlarged, the user's eyes can see clearly and comfortably. The contents of the specific area and the convenience for users to edit or operate text through the screen will help the promotion and popularization of such wide-screen displays or electronic devices such as notebook computers with such wide-screen displays.

Contents of the invention

The purpose of the present invention is mainly to provide a method for partially enlarging a display screen and an electronic device using the method, which can appropriately enlarge a local area of a display screen to facilitate viewing and operation of a user.

Thus, the partial zoom-in method of the display screen of the present invention includes: (A) defining a part of the display screen as the zoom-in area, and the rest of the area as the non-magnification area; (B) capturing the video to be displayed in the non-magnification area of the display The data is stored in the non-magnified data storage block corresponding to the non-magnified area of the video memory, and the video data to be displayed in the enlarged area is captured and enlarged, and then stored in the enlarged data storage area of the video memory corresponding to the enlarged area and (C) read the video data stored in the non-amplified data storage block and the enlarged data storage block of the video memory, and send them to the display for display.

The electronic device of the present invention realizes the above method, which can control the local enlargement of the display screen, and the electronic device includes: a video memory; a video data temporary storage unit, which temporarily stores the video data to be displayed; a central processing unit and a video processing unit. The central processing unit defines a part of the display screen as an enlarged area and the remaining area as a non-magnified area, and retrieves the video data displayed in the non-magnified area of the display from the video data temporary storage unit and stores it in the video The non-enlarged data storage block corresponding to the non-enlarged area of the memory, and the video data that will be displayed in the enlarged area is retrieved from the video data temporary storage unit and enlarged, and stored in the corresponding enlarged area of the video memory Zoom in on the data storage block. The video processing unit reads the video data stored in the non-amplified data storage block and the enlarged data storage block of the video memory, and sends them to the display for display.

Preferably, the length of the magnification area is the same as that of the non-magnification area, and the height of the magnification area is at least twice as high as a line of content displayed in the non-magnification area.

Preferably, the magnification area is located near the center of the display screen, and the non-magnification area is divided into an upper non-magnification area and a lower non-magnification area.

Preferably, the video memory includes a first storage block that sequentially and continuously stores the video data of the upper non-magnified area, a second storage block that stores the enlarged video data of the enlarged area, and stores the lower non-magnified area. The third storage block of video data in the region, wherein the non-amplified data storage block includes the first and third storage blocks, the second storage block is the enlarged data storage block, and the video processing unit depends on The video data in the first storage block, the second storage block and the third storage block are sequentially read and sent to the display.

Preferably, the enlarged data storage block is located behind the non-enlarged data storage block, and the non-enlarged data storage block includes the first storage block for storing the video data of the upper non-enlarged area and the first storage block for storing the lower non-enlarged area The second storage block of the video data, and the interval between the two storage blocks is equivalent to the blank storage space of the enlarged data storage block.

Preferably, the central processing unit also stores window data in a third storage block located between the second storage block and the enlarged data storage block of the video memory, and the window data is read by the video processing unit When fetched and sent to the display screen for display, an enlarged window will be generated in the enlarged area of the display screen, and the video processing unit will sequentially read the non-enlarged data storage block, the third storage block and the enlarged data Store the block and send it to the display for display.

Preferably, the electronic device is a notebook computer, and the display is a display of the notebook computer.

Description of drawings

Fig. 1 is the circuit block diagram of the first preferred embodiment of the electronic device of the present invention;

Fig. 2 is a flow chart of performing partial screen enlargement in the first embodiment;

Fig. 3 is a schematic diagram of a display screen without partial screen enlargement in the first embodiment;

Fig. 4 is a schematic diagram of video data content stored in a video memory corresponding to the display screen of Fig. 3;

Fig. 5 is a schematic diagram of defining the enlarged area and the non-magnified area of the display screen in the first embodiment;

Fig. 6 is a schematic diagram of the content of video data stored in the video memory corresponding to the enlarged area and the non-enlarged area of Fig. 5 in the first embodiment;

Fig. 7 is a schematic enlarged partial screen view of the display of the first embodiment;

8 is a schematic diagram of the relative change of the content of the video data stored in the video memory when the content of the enlarged area of the corresponding display screen changes according to the first embodiment;

FIG. 9 is a schematic diagram illustrating when the content of the enlarged area in the display screen of the first embodiment changes;

FIG. 10 is a flow chart of partial image enlargement performed by the second preferred embodiment of the electronic device of the present invention;

Fig. 11 is a schematic diagram of the video data content stored in the video memory corresponding to the enlarged area and the non-enlarged area of Fig. 5 in the second embodiment; and

Fig. 12 is a schematic enlarged partial screen view of the display of the second embodiment.

Fig. 13 is a schematic diagram of video data content of the enlarged partial screen of the display in the second embodiment.

[Description of main component labels]

100 notebook computers

10 LCD display 11 Video data temporary storage unit

12 central processing unit 13 video memory

14 Video processing unit 21～25, 101～106 process steps

30 screens 31 zoom areas

32 upper non-magnification area 33 lower non-magnification area

71 enlarged area 72 upper non-magnified area

73 lower non-amplified areas 111 the first storage block

112 second storage block 113 enlarged data storage block

114 the third storage block 115 blank storage space

120 picture 121 upper non-magnification area

122 lower non-magnified area 123 blank area

124 zoom window 131 first storage block

132 second storage block 133 third storage block

Detailed ways

The aforementioned and other technical content, features and effects of the present invention will be clearly presented in the following detailed description of two preferred embodiments with reference to the drawings.

Referring to Fig. 1, it is the first preferred embodiment of the electronic device of the present invention. The electronic device of this embodiment is a notebook computer 100 as an example, which has a wide-screen liquid crystal display 10 with an aspect ratio of 1600×800. (hereinafter referred to as the display 10), and Fig. 1 shows the main relevant circuit block used for controlling the local enlargement of the display screen of the display 10 by the notebook computer 100, including a video data temporary storage unit 11, a central processing unit 12, a video memory 13 and video processing unit 14 .

The video data temporary storage unit 11 is a place where the central processing unit 12 accesses data, and it may be a main memory or a hard disk, wherein the original video (image) data to be displayed is temporarily stored.

Video memory 13 (video RAM, generally referred to as VRAM) stores video (image) data that will be finally sent to display 10 for display.

The central processing unit 13 is loaded with a partial enlargement driver program and an instruction input application program that requires the partial enlargement driver program to execute. The command input application program can provide a "partial enlargement" option on the display screen for the user to select, as shown in Figure 2, when the "partial enlargement" option is selected, the command input application program will send a partial enlargement command to the central processing unit 12. Enable the driver to execute the partial zoom. Therefore, when the partial magnification driver is executed, as shown in Figure 22, at first, the central processing unit 12 defines a part of the display screen as the magnification area, and the rest of the area is the non-magnification area, and usually the magnification area will be set on the screen for the user to directly see. to the position, that is, the position close to the middle (central), and the enlarged area is presented in a manner of occupying multiple columns, that is to say, in the text editing environment, in order to enlarge the text, the enlarged area will occupy at least 2 of the screen. Line space, so that the text in it is at least about 2 times larger than the text in other non-magnified areas.

Then, as in step 23, the central processing unit 12 retrieves the video data to be displayed in the non-magnifying area of the display 10 from the video data temporary storage unit 11 and stores it in the non-magnifying data storage area of the corresponding non-magnifying area of the video memory 13 Block, then proceed to step 24, from the video data temporary storage unit 11, retrieve the video data that will be displayed in the enlarged area and after appropriate amplification, store it in the enlarged data storage block of the corresponding enlarged area of the video memory 13.

Thereby, as step 25, when the video processing unit 14 reads the video data in the non-enlarged data storage block and the enlarged data storage block of the video memory 13 and sends them to the display for display, the display screen of the display can The enlarged video data can be seen in the enlarged area, while other video data displayed in the non-enlarged area maintains the existing size. An example will be given below to further illustrate.

As shown in Figure 3, assume that the picture 30 of the editing window produced by the text editing software on the display can only accommodate 5 lines of text content, and these 5 lines of text content are correspondingly stored in the storage block of the video memory 13 as shown in Figure 4 .

Yet because the pitch between the pixels of this kind of wide-screen display is narrower than that of a general liquid crystal display, it may cause the text displayed in the editing window screen 30 to be too small and affect the user when reading or editing. The "partial enlargement" option provided by the command input application program selects partial enlargement, so that the central processing unit 12 executes the partial enlargement driver, and as shown in Figure 5, the 3rd and 4th rows of the definition screen 30 enlarge the area 31, and the remaining regions are non-enlarged areas. Enlargement area, and because the enlargement area 51 is set at about the middle of the screen 30, the non-enlargement area is divided into an upper non-enlargement area 32 (i.e. the 1st and 2nd row) and a lower non-enlargement area 33 (i.e. the 5th row). Moreover, the purpose of the enlargement area 31 is to enlarge the text such as "CCCC" located therein. And in order not to cover the characters in the upper non-magnifying region 32 and the lower non-magnifying region 33 in order to allow the enlarged region 31, the characters "DDDD" and "EEEE" originally displayed on the 4th and 5th lines in the screen 30 must be moved down one line. , therefore, "EEEE" will be squeezed out of the frame 30. In order to reach this effect, the central processing unit 12 will read the video data to be displayed on the upper non-magnified area 32 (i.e. the 1st and 2nd rows) from the video data temporary storage unit 11 again, i.e. "AAAA" and "BBBB", And be stored in the first storage block 131 of the video memory 13 as shown in Figure 6, then read the video data to be displayed in the enlarged area 31 from the video data temporary storage unit 11, i.e. "CCCC", and perform the amplification process Afterwards, store in the second storage block 132 of the video memory 13 shown in Figure 6, and read the video data to be displayed in the lower non-amplification area 53 from the video data temporary storage unit 11, i.e. "DDDD", and store it in In the third storage block 133 of the video memory 13 shown in FIG. 6 , the first to third storage blocks 133 are sequentially located in consecutive positions of the video memory 13 . That is, the first storage block 131 and the third storage block 132 are non-amplification data storage blocks for storing non-amplification video data.

In this way, when the video processing unit 14 sequentially reads the video contents of the first, second and third storage blocks 131-133 of the video memory 13 and sends them to the display for display, as shown in FIG. The zoomed-in area 71 in the picture 70 of the editing window sees the enlarged video data "CCCC", while other video data "AAAA", " BBBB" and "DDDD" maintain the existing size.

In addition, when the cursor 80 is on the last line of the screen 70, that is, the fifth line, if the user controls the cursor to move down one line, the central processing unit 12 needs to update the video data in the video memory 13 in real time, and restart from the video. Capture corresponding video data in the data temporary storage unit 11 and store in the first to third storage blocks 131-133 of the video memory 13 as shown in Figure 8, and as shown in Figure 9, make the cursor 80 place A line of text "EEEE" enters the screen 70, and the first line of "AAAA" will be squeezed out of the screen 70, and the previous line of text "DDDD" at the position of the cursor 80 enters the enlargement area 71 to be enlarged.

Therefore, through the above mechanism, the text content that the user is watching or editing can be enlarged in a timely manner, which is helpful for the user to edit or operate the text through the display screen, especially when using a liquid crystal display with a high resolution .

Shown in Fig. 10 again, it is the second preferred embodiment of the electronic device of the present invention, and its circuit block is exactly the same as that of the first embodiment, and the only difference is that the central processing unit 12 is not achieved by executing the (locally enlarged) driver program. Instead of the function of partially zooming in on the displayed content, the above partial zooming effect can be achieved by executing a partial zoom-in application program instead. The process of enlarging partial content of the screen by the partial magnification application program will be described in detail below with an example.

Assuming that this embodiment also wants to enlarge the line of "CCCC" in the screen 30 shown in Figure 3, then referring to step 101 of Figure 10, when the partial enlargement application program receives the "partial enlargement instruction", it proceeds to step 102 As shown in FIG. 5 , the third and fourth rows of the definition screen 30 are enlarged regions 31 , and the remaining regions are non-magnified regions (including the upper non-magnified region 32 and the lower non-magnified region 33 ).

Then, as step 103, the central processing unit 12 will read the video data to be displayed on the upper non-magnification area 32 (i.e. the 1st and 2nd rows) from the video data temporary storage unit 11 again, i.e. "AAAA" and "BBBB" , and stored in the first storage block 111 of the video memory 13 as shown in Figure 11, and read the video data to be displayed in the lower non-magnification area 53 from the video data temporary storage unit 11, that is, "DDDD", and store Enter the second storage block 112 of the video memory 13 shown in Figure 11, and then as step 104, read the video data to be displayed in the enlarged area 51 from the video data temporary storage unit 11, i.e. "CCCC", and zoom in After processing, store in the enlarged data storage block 113 of the video memory 13 shown in Figure 11, and as step 105, store the window data to be displayed on the enlarged area 51 in the third storage block 114 of the video memory 13; Wherein the first storage block 111 and the second storage block 112 are discontinuous but are located in different regions of the video memory 13 in sequence, and the space between them is equivalent to the blank storage space 115 of the size of the enlarged data storage block 113 , and the third storage block 114 and the enlarged data storage block 113 are located after the second storage block 112 in sequence.

Thus, when the video processing unit 14 is controlled by the central processing unit 12, it sequentially reads the video data of the first storage block 111, the blank storage space 115 and the second storage block 112 of the video memory 13 and sends them to the display 10 , as shown in FIG. 12 , the video data “AAAA” and "BBBB" and "DDDD", and a blank area 123 is formed between the second row and the fifth row. And when the video processing unit 14 then reads the window data in the third storage block 114 of the video memory 13 and sends it to the display 10, as shown in FIG. When the video processing unit 14 continues to read the enlarged video data “CCCC” in the enlarged data storage block 113 of the video memory 13 and send it to the display 10 , the enlarged video data “CCCC” will be displayed in the enlarged window 124 .

And similarly, as shown in Fig. 7 and Fig. 8, when the cursor is positioned at the last line of the screen, that is, the fifth line, if the user controls the cursor 80 to move down one line, the central processing unit 12 needs to update the video memory in real time The video data in 13, recapturing corresponding video data from the video data temporary storage unit 11 is stored in the first and second storage blocks 111～112 and the enlarged data storage block of the video memory 13 as shown in Figure 12 In 113, and as shown in Figure 8, make that line word " EEEE " of cursor 80 place enter in the picture, and " AAAA " of first line will be squeezed out picture 120, and turn to the cursor 80 place The text "DDDD" in the previous line enters the enlargement window 124 and is enlarged.

In the same way, when the user enters text in the enlarged window 124 to reach one line and needs to change the line, the original enlarged text in the enlarged window 124 will be squeezed to the previous line to return to the existing font size before the enlargement, and the enlarged window 124 enlarges a line of newly input characters, that is, the enlarged window 124 will be fixed at the third and fourth lines of the screen, and the characters entered in the enlarged window 124 will be enlarged.

In addition, it is worth mentioning that the magnification window 124 of this embodiment can assist the video processing unit 14 to send the magnification data to the correct position of the display for display, but the magnification window 124 is not necessary. Without the magnification window 124, the magnified Video data is directly superimposed on the enlarged area (blank area) of the screen.

Therefore, through the partial magnification application program of the second embodiment, the electronic device can also timely magnify the text content in the display screen that the user is watching or editing, so as to facilitate the user to edit or operate text through the display screen. , especially when using a higher resolution LCD display.

But what is described above is only a preferred embodiment of the present invention, when the scope of the present invention can not be limited with this, that is, all simple equivalent changes and modifications made according to the scope of the claims of the present invention and the content of the description of the invention, All still belong to the scope covered by the claims of the present invention.

Claims (13)

1. electronic installation, the may command display picture is local to be amplified, and this electronic installation comprises:

Video memory;

The video data temporary storage location, the temporary video data that will be shown;

CPU (central processing unit), its part zone that defines this display picture is the amplification region, all the other zones are non-amplification region, and from this video data temporary storage location acquisition will be presented at video data in the non-amplification region of this display deposit in this video memory to non-amplification data memory block that should non-amplification region, and after acquisition will be presented at the video data of this amplification region and amplify from this video data temporary storage location, deposit in this video memory to amplification data memory block that should the amplification region; And

Video processing unit reads the non-amplification data memory block that is stored in this video memory and the video data in the amplification data memory block, and delivers to this display and show.

2. electronic installation according to claim 1, wherein the length of this amplification region is identical with this non-amplification region, and the height of this amplification region is the height of twice at least of delegation's content of this non-amplification region demonstration.

3. electronic installation according to claim 1 wherein should amplify the position in the position of this display picture near central authorities, and should non-amplification region be divided into non-amplification region reach under non-amplification region.

4. electronic installation according to claim 3, wherein this video memory comprises in regular turn and stores continuously first memory block of the video data of non-amplification region on this, store second memory block of the amplified video data of this amplification region, and the 3rd memory block of the video data of the non-amplification region of this time of storage, wherein this non-amplification data memory block comprises this first and the 3rd memory block, this second memory block i.e. this amplification data memory block, and this video processing unit reads this first memory block in regular turn, video data in second memory block and the 3rd memory block is also delivered to this display.

5. electronic installation according to claim 3, wherein this amplification data memory block is positioned at after this non-amplification data memory block, this non-amplification data memory block comprises first memory block that stores the video data of non-amplification region on this and second memory block that stores the video data of the non-amplification region of this time, and is equivalent to the blank storage space of this amplification data memory block between two memory block at interval.

6. electronic installation according to claim 5, wherein, this central processing unit also stores window data in the 3rd memory block between this second memory block and this amplification data memory block of this video memory, when this window data is read and delivers to this display picture demonstration by this video processing unit, can produce in the amplification region of this display picture and amplify window, and this video processing unit is to read this non-amplification data memory block, the 3rd memory block and this amplification data memory block in regular turn and deliver to this display to show.

7. electronic installation according to claim 1, wherein this electronic installation is a notebook computer, and this display is the display of this notebook computer.

8. local display picture magnification method comprises:

(A) defining a part of regional of this display picture is the amplification region, and all the other zones are non-amplification region;

(B) acquisition will be presented at video data in the non-amplification region of this display deposit in video memory to non-amplification data memory block that should non-amplification region, and after acquisition will be presented at the video data of this amplification region and amplify, deposit in this video memory to amplification data memory block that should the amplification region; And

(C) read the non-amplification data memory block that is stored in this video memory and the video data in the amplification data memory block, and deliver to this display and show.

9. local display picture magnification method according to claim 8, wherein the length of this amplification region is identical with this non-amplification region, and the height of this amplification region is the height of twice at least of delegation's content of this non-amplification region demonstration.

10. local display picture magnification method according to claim 9, wherein this amplification region is positioned at the position of this display picture near central authorities, and should be divided into non-amplification region and following non-amplification region in non-amplification region.

11. local display picture magnification method according to claim 10, in step (B), this video memory comprises in regular turn and stores continuously first memory block of the video data of non-amplification region on this, store second memory block of the amplified video data of this amplification region, and the 3rd memory block of the video data of the non-amplification region of this time of storage, wherein this non-amplification data memory block comprises this first and the 3rd memory block, this second memory block i.e. this amplification data memory block, and this first memory block, video data in second memory block and the 3rd memory block is read and is delivered to this display in regular turn.

12. local display picture magnification method according to claim 10, in step (B), this amplification data memory block is positioned at after this non-amplification data memory block, this non-amplification data memory block comprises first memory block that stores the video data of non-amplification region on this and second memory block that stores the video data of the non-amplification region of this time, and is equivalent to the blank storage space of this amplification data memory block between two memory block at interval.

13. local display picture magnification method according to claim 12, in step (B), also in three memory block of the position of this video memory between this second memory block and this amplification data memory block, store window data, when this window data is read and delivers to this display picture demonstration, can produce in the amplification region of this display picture and amplify window, and this non-amplification data memory block, the 3rd memory block and this amplification data memory block are read and delivered to this display demonstration in regular turn.

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