CN101661715A - Device and method for amplifying image translation display - Google Patents
Device and method for amplifying image translation display Download PDFInfo
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- CN101661715A CN101661715A CN200810142102A CN200810142102A CN101661715A CN 101661715 A CN101661715 A CN 101661715A CN 200810142102 A CN200810142102 A CN 200810142102A CN 200810142102 A CN200810142102 A CN 200810142102A CN 101661715 A CN101661715 A CN 101661715A
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Abstract
The invention discloses a device and a method for amplifying image translation display. The device comprises a CPU, an LCD controller, an SDRAM controller, a band source destination windowing image scaler, an image scaler, an SDRAM and an LCD display screen. The invention also discloses the method for amplifying the image translation display, which comprises the following steps that: the CPU setsa source windowing address generator and a destination windowing address generator, starts the image scaler to implement scaling processing of images, writes the processed data into the SDRAM, and finally displays the data through an LCD display. The device and the method greatly reduce the read-write quantity of the data, save the bandwidth of the SDRAM, improve the display speed, and implement horizontal smooth movement of the amplified images, thereby achieving higher performance with lower cost.
Description
Technical field
The present invention relates to a kind of digital display terminal, relate to a kind of device and method of realizing that digital picture moves horizontally especially.
Background technology
Because it is digital display terminal has the advantage that numerous analog display terminals do not possess, therefore all very popular in increasing application.Special effect processing such as for example, the digital picture that is used for digital display terminal can be amplified before output shows, dwindled, figure image intensifying.But for moving horizontally that enlarged image shows, in the product in the market as digital photo frame, can find moving when amplifying picture, the moving of horizontal direction obviously has the pause and transition in rhythm or melody sense and so smooth unlike vertical moving.
One of them major issue that at first will face in the numeral display terminal product is exactly a sdram size, because the data source of current a lot of display terminals is often for surpassing the picture of ten million pixel, if one with the picture of ten million pixel of the jpeg format storage formats according to 4:2:2, because each pixel need take the capacity of 2 bytes, that is to say if will put in order pictures and be put into the SDRAM storer and need take storage space above 19MB, if add special effect processing, image zoom, display buffer and other are handled needed storage space, and then sdram size will reach more than the 64MB and could satisfy application demand.But because the common resolution of display screen does not reach so high, therefore current digital display terminal product all can adopt hardware or software image scaler that it is zoomed to the screen display size to show, rather than directly former picture-storage is shown to save SDRAM.When realizing that function is watched in amplification, in fact also just amplify demonstration, just also need some additional spaces storage intermediate treatment process datas according to the part with photo of screen display.
The another one problem is exactly the SDRAM bandwidth problem, because the resolution that the LCD screen adopts in the ordinary numbers display terminal is 640 * 480, medium-to-high grade LCD screen then adopts 800 * 600 even 1024 * 768.In order to make the unlikely flicker of picture, refresh rate needs 60Hz, and the bandwidth of shielding according to VESA standard LCD just needs 25MHz, 40MHz, 65MHz respectively, and this is the situation of single display layer.Carry out special effect processing if open second, third display layer simultaneously, or TV and lcd screen export simultaneously, and image zoom, image and audio decoder etc. all need to take certain bandwidth, and the bandwidth of normally used SDRAM has only about 133MHz.Therefore, certainly will rob bandwidth mutually, cause to show the flower screen or produce the phenomenon that image shows the pause and transition in rhythm or melody sense if a plurality of module is worked simultaneously.
Therefore, a lot of digital display terminal is in the market moving horizontally when amplifying picture, has tangible pause and transition in rhythm or melody sense and so smooth unlike vertical moving.Trace it to its cause mainly is that current digital display terminal main control chip carries out when the reading displayed data in a continuous manner, and the mobile data of vertical direction just is to be connected on linear increasing after the former video data, thereby the base address pointer that only need change the lcd controller reading of data simply can be realized moving apace; Then different when moving horizontally, though may just move a small amount of new data enters, most of data in the former viewing area all are identical, but because data can not be are simply received after the former video data with linear mode, but need to upgrade whole data of shielding, so translational speed can obviously move slow a lot than vertical direction.In order to realize that whole screen refreshes, and can directly flush to the enlarged image view picture on the display screen for the image sealer with source data windowing function; If the image zoom controller does not have this function, then can proportionally take out for image sealer and directly be amplified to the usefulness of screen size for demonstration by the part that software or hardware accelerator will need to amplify.Described two kinds of methods all relate to the read-write of mass data, miscellaneous equipment competition SDRAM bandwidth in needs and the system, therefore speed can be more many slowly than the base address pointer of simple modification lcd controller reading of data, and also need extra storage space to store by the method for software and hardware accelerating module.
Summary of the invention
Technical matters to be solved by this invention is for when the speed of CPU in the digital display terminal main control chip and sdram memory capacity, the limited bandwidth, and that enlarged image moves horizontally is unsmooth, speed is slower, has the pause and transition in rhythm or melody sense.
For solving the problems of the technologies described above, the invention discloses a kind of amplifying image translation device shown, this device comprises CPU, lcd controller, SDRAM, sdram controller, image decoder and LCD display, this device also comprises the image sealer that band source purpose is windowed, wherein CPU will treat that by sdram controller magnification region takes out from SDRAM, the image sealer of windowing by band source purpose is amplified to the display screen size with the image-region that extracts then, delivers at last in the lcd controller to show for LCD display.
The image sealer that described band source purpose is windowed comprises image sealer, source address generator and the purpose address generator of windowing of windowing, wherein image sealer reads source data by the window address of address generator setting, source, after treatment by the purpose address output storage that address generator is provided with of windowing.
Adjacent two row view data storage addresses are continuous among the described SDRAM.
This method may further comprise the steps:
Step S600: the source of the setting address generator of windowing comprises main pane base address, source and window size;
Step S610: the purpose address generator of windowing is set, comprises the purpose main pane base address of storing data and the size of windowing;
Step S620: enlargement factor is set and starts image sealer, the source subwindow that step S600 determines from SDRAM reads in source data;
Step S630: after source data carried out processing and amplifying, write the purpose subwindow that step S610 determines among the SDRAM;
Step S640: revise the LCD controlled variable;
Step S650: by the image after the LCD display process.
The source main window is for amplifying the storage area of preceding former entire image among the described step S600, and the source subwindow is newly to move into the preceding image data storage zone of the corresponding amplification of the part that shows; The purpose main pane is respectively the viewing area of viewing area of amplifying the back entire image and the parts of images that newly moves among the described step S610.
Described step S600 further comprises: described CPU is according to the moving direction of display window and count, calculate the new zone that moves into image, again according to the enlargement factor of image, calculate the source data of described new immigration image-region before amplification, this source data correspondence position in the former entire image before amplification is the position of source subwindow in the main window of source, and address generator obtains main pane base address, source and the size that described image sealer needs thereby source of configuration is windowed.
When described SDRAM has two display buffers zone, described step S610 also further comprises: when display window moved to left, the former initial base address that the display buffer zone of current free time is all pointed in the initial base address of purpose main pane deducted the address that moves horizontally after counting; When display window moves to right, the former initial base address that the display buffer zone of current free time is pointed in the initial base address of purpose main window adds the address that moves horizontally after counting, and the start address of Central Plains, buffer area display image second row of current free time is pointed in the initial base address of purpose subwindow.
When described SDRAM had single display buffer zone, described step S610 also further comprised: when display window moved to left, the initial base address of purpose main pane was all directly pointed to current base address, this viewing area and is deducted the address that moves horizontally after counting; When display window moved to right, the initial base address of purpose main window was directly pointed to current base address, this viewing area and is added the address that moves horizontally after counting, and the start address of former display image second row is pointed in the initial base address of purpose subwindow.
Described step S640 further comprises: when display window moved to left, lcd controller was modified to current output base address with the base address of exporting and deducts the address that moves horizontally after counting; When display window moves to right, lcd controller will be exported the base address and be modified to current initial base address and add the address that moves horizontally after counting.
The described amplifying image translation display device that is beneficial effect of the present invention can realize fast that image level moves, the image zoom controller module that employing has source windowing function and a purpose windowing function amplifies, moves and splicing the video data of part, thereby the read-write amount of video data is significantly reduced, and save the SDRAM bandwidth greatly, improve display speed, the horizontal slippage that realizes enlarged image is moving, thereby obtains higher performance with lower cost.
Description of drawings
Fig. 1 is existing digital display terminal main control chip structural representation;
Fig. 2 is the described digital display terminal main control chip structural representation of the specific embodiment of the invention;
Fig. 3 is the described source of a specific embodiment of the invention purpose windowing function image sealer structural representation;
Fig. 4 is specific embodiment of the invention master image window and amplifies the position view that shows subwindow;
Fig. 5 (a), Fig. 5 (b) and Fig. 5 (c) are the position view of the described image sealer of the specific embodiment of the invention when amplifying picture and moving horizontally;
Fig. 6 is the process flow diagram of the specific embodiment of the invention when amplifying picture and moving horizontally;
Fig. 7 (a), Fig. 7 (b), Fig. 7 (c) and Fig. 7 (d) are that the specific embodiment of the invention is amplified the Data Update schematic flow sheet of picture display window level when moving to right;
Fig. 8 (a), Fig. 8 (b), Fig. 8 (c) and Fig. 8 (d) are the Data Update schematic flow sheet of the specific embodiment of the invention when amplifying picture display window horizontal left.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the invention is elaborated.
As shown in Figure 1, existing digital display terminal main control chip for the demonstration that realizes picture except comprising CPU, comprise that also image decoder, sdram controller, LCD show control, image sealer module.After finishing, to realize this framework hypograph decoder decode moving of enlarged image, at first need CPU will treat that from SDRAM magnification region takes out by sdram controller, by image sealer the image-region that extracts is amplified to the display screen size then, delivers at last in the lcd controller for the LCD display demonstration.Because this process relates to mass data such as data extract and full screen Refresh Data and moves, so efficient is very low.
Be illustrated in figure 2 as the structural representation of the described a kind of amplifying image translation display device of the specific embodiment of the invention, this device has increased source windowing function and purpose windowing function to image sealer, comprises image sealer 240, SDRAM 250 and LCD display 260 that CPU 200, lcd controller 210, sdram controller 220, image decoder 230, band source purpose are windowed.Do not need to use CPU 200 will treat that magnification region carries out independent data extract in this device, get final product automatic data and the realization amplification for the treatment of magnification region of from SDRAM 250, reading with the jumping address mode with the size for the treatment of magnification region because 240 need of image sealer that described band source purpose is windowed provide the size of original image; When output, also data can be outputed to the connecting method of windowing and upgrade wherein partial data in the original digital image data district, the final initial pointer that only needs to revise lcd controller 210 that shows gets final product, therefore significantly reduce data-moving amount in the demonstration enlarged image procedure for displaying, improved the efficient when enlarged image moves horizontally.
Be illustrated in figure 3 as the structural representation of the described source of specific embodiment of the invention purpose windowing function image sealer 240, this structure has the image sealer 310 that realizes the primary image zoom function except comprising, also comprises source address generator 320 and the purpose address generator 330 of windowing of windowing respectively at input, output terminal.Described two address generators all need dispose main pane base address and window size as shown in Figure 4, the initial base address that deposit for entire image before amplifying the main window base address, source of address generator 320 configuration of windowing, wherein said source, size is the width of entire image before amplifying and formation highly; The initial base address that deposit in the entire image before amplification for the source data correspondence of the part that need to move into display window before amplifying subwindow base address, source, size are also by this source data correspondence width in shared zone and highly constituting in the entire image before described amplification.Described purpose is windowed address generator 330 configuration purpose main window base address for amplifying the initial base address of the back entire image that shows, size constitutes for the height and the width of the entire image of demonstration, purpose subwindow base address is the base address that the new display part image that moves into is positioned at the entire image of demonstration, and size is that new immigration height and width partly constitutes.
Window after address generator 320 configures main pane base address and size in the source, image sealer 310 can read source data and carry out processing and amplifying in SDRAM 250; The display image data that will obtain after will amplifying simultaneously inputs to purpose address generator 330 position pointed of windowing.
In addition, the position of described main window and subwindow concerns that except that as shown in Figure 4 subwindow can be optional position in the main window, and is less than or equal to the width and the height of main window.
As Fig. 5 (a) and (b) and (c) being depicted as when enlarged image moves horizontally, the viewing area position view, wherein, shown in Fig. 5 (a), current display area is positioned at the horizontal direction leftmost side, then this moment, display window can move to right; Shown in Fig. 5 (b), current display area is positioned at the horizontal direction rightmost side, and then this moment, display window can move to left; Shown in Fig. 5 (c), current display area is positioned in the middle of the horizontal direction, and then this moment, display window both can move to right, and also can move to left.It should be noted that when described display window moves to left that then for display image moves to right, the image on the promptly former display image left side obtains showing with respect to image; Equally, described display window moves to right, and then for display image moves to left, the image on promptly former display image the right obtains showing with respect to image.This specific embodiment is that benchmark describes with moving of window, simultaneously, the height of current display area also can be less than the height of display window, and then image can vertical moving, but the present invention only considers to move horizontally, and is that the display window height is an example with the viewing area height then.
Process flow diagram when being illustrated in figure 6 as the specific embodiment of the invention and amplifying picture and move horizontally is specially:
Step S600: the source of the setting address generator 320 of windowing, comprise main pane base address, source and window size, wherein, described CPU 200 is according to the moving direction of display window and count, calculate the new zone that moves into image, again according to the enlargement factor of image, calculate the source data of described new immigration image-region before amplification, this source data correspondence position in the former entire image and window size before amplification are the position relation of source main pane, and address generator 320 obtains main pane base address, source and the window size that described image sealer 310 needs thereby source of configuration is windowed.
Step S610: the purpose address generator 330 of windowing is set, comprises the purpose main pane base address of storing data and the size of windowing.Wherein, at first CPU 200 is provided with the initial base address of purpose main pane by the purpose address generator 330 of windowing, when display window moves to left, for the system that has two display buffers zone in SDRAM 250, the current base address, display buffer zone that the current free time is all pointed in the initial base address of purpose main pane deducts the address that moves horizontally after counting; For the system that has only single display buffer in SDRAM 250, the initial base address of purpose main pane is all directly pointed to current base address, this viewing area and is deducted the address that moves horizontally after counting;
When display window moves to right, for the system that in SDRAM 250, has two display buffers zone, the current base address, display buffer zone that the current free time is pointed in the initial base address of purpose main window adds the address that moves horizontally after counting, and the start address of Central Plains, buffer area display image second row of current free time is pointed in the initial base address of purpose subwindow; For the system that in SDRAM 250, has only single display buffer, the initial base address of purpose main window is directly pointed to current base address, this viewing area and is added the address that moves horizontally after counting, and the start address of former display image second row is pointed in the initial base address of purpose subwindow.
Wherein, described pair of display buffer zone refers to two display buffer zones, and when display buffer zone imported display video data, another display buffer zone output showed that read-write operation is carried out in two display buffer zones in turn; Described single display buffer zone refers to that only there is a block buffering zone in system, therefore writes video data and must finish at the black-out intervals that shows in the buffer area, and then sense data shows output during effective demonstration.
And then the size of purpose main pane is set by the purpose address generator 330 of windowing, in this embodiment, the size of described purpose main window is the size of display screen, and the width of described purpose subwindow is to move horizontally required counting, and highly is the height of display screen.
It should be noted that described purpose main pane is with respect to the image after amplifying; Described source main pane is with respect to the image before amplifying, and wherein reading in what write out all is data in the subwindow.
These data that image sealer 240 outputs that can guarantee that described band source purpose windows are set can be write data by sdram controller 220 before the retention data of former viewing area of SDRAM 250 to jump address mode.
Step S620: enlargement factor is set and starts image sealer 310, read in source data from SDRAM 250, after starting image sealer 310, image sealer 310 is read in the source subwindow of jumping address mode in SDRAM 250 according to the source main window size that is provided with among the step S600 and base address and is treated the enlarged image source data, carries out processing and amplifying.
Step S630: realize processing and amplifying, write SDRAM 250, after image sealer 310 is finished processing and amplifying, the purpose that is provided with according to step S610 the window base address and the size of windowing, the continuous data of image sealer 310 output is inputed to the purpose subwindow, and the retention data that this data discrete ground is spliced to former video data is merged into a complete enlarged image afterwards.
Step S640: revise the LCD controlled variable, according to the initial base address of current output with move horizontally direction and count, the output base address of revising LCD by lcd controller 210.Wherein, when display window moves to left, lcd controller 210 will be exported the base address and be modified to the reach of current initial base address and move horizontally address after counting; When display window moves to right, lcd controller 210 will be exported the base address and be modified to current initial base address and add the address that moves horizontally after counting.
Wherein, when the whole screen of image showed, then the output base address of described LCD was identical with described purpose main window base address, and when showing as if the non-whole screen of image, both are then inequality.
Step S650:LCD shows, is shown by lcd controller 210 output datas to LCD display 260.
The described image level of the specific embodiment of the invention moves and only moves its new display part data in the procedure for displaying, and the obviously whole screen data updating workload of mobile data volume is few, so efficient improves greatly.
Shown in Fig. 5 (a) and (b), (c), the moving horizontally to be divided into of image moves to left and moves to right two kinds, under above-mentioned workflow, the corresponding difference of filling of the skew of source address and destination address and image in described two kinds of moving process below elaborates to address offset and data updating process in described two kinds of moving process respectively.
At first, moving to right with display window is that example describes.
As Fig. 7 (a) and (b), (c) and (d) be depicted as the specific embodiment of the invention and amplify the Data Update schematic flow sheet of picture display window level when moving to right.Wherein, be depicted as current display image, when the image display window level moves to right, wherein will have partial data to exceed display window, as exceeding the display part among Fig. 7 (a) as Fig. 7 (a); Part data still are retained in the display window, as keeping the display part among Fig. 7 (a).
Because display window moves to right, the initial base address that then will show freely the former initial base address offset shown in Fig. 7 (b) to current initial base address, wherein counting of skew is counting that image moves, because adjacent two row view data storage addresses are continuous among the described storage space S DRAM 250, last point storage addresses and first storage addresses of next line of being lastrow are continuous, then because the initial base address that shows is offset, the leftmost side, described former display part is the display part begins to be transferred to image from second row the rightmost that exceeds shown in Fig. 7 (a).
After initial base address is offset, the corresponding enlarged image data that the image sealer 240 that described band source purpose is windowed obtains input to the new immigration display part shown in Fig. 7 (c), be spliced into complete enlarged image with the reservation display part in the former display image, described complete image is the image that needs demonstration after the described window of present embodiment moves to right, shown in Fig. 7 (d), then whole display part is the main window of described display window when moving to right in this moment Fig. 7 (d), newly moves into the display part and is corresponding subwindow.
Secondly, moving to left with display window is that example elaborates to address offset and data updating process.
Data Update schematic flow sheet when as Fig. 8 (a) and (b), (c) and (d) being depicted as the specific embodiment of the invention and amplifying picture display window horizontal left.Wherein, be depicted as current display image, when image window moves to left, new data moved into, shown in Fig. 8 (a), exceed the display part thereby will there be partial data to exceed display window as Fig. 8 (a); Part data still are retained in the display window reservation display part shown in Fig. 8 (a).
Because display window moves to left, then initial base address is offset, the former initial base address offset of the demonstration shown in Fig. 8 (b) is to current initial base address freely, wherein counting of skew is counting that image moves to right, also be counting that window moves to left, equally, because the address of adjacent two row is continuous among the storage space S DRAM 250, the capable leftmost side that is transferred to image of N-1 is walked to from first in the rightmost side, the then described former display part i.e. display part that exceeds shown in Fig. 8 (a), wherein corresponding first row that exceeds the display part is transferred to second row of the image leftmost side, first row of the described image leftmost side is produced by address offset, and wherein N is total line number of current display window.
After the base address is offset, the corresponding enlarged image data that the image sealer 240 that described band source purpose is windowed obtains input to first row by the address offset generation shown in Fig. 8 (b), and upgrading the display part that exceeds shown in Fig. 8 (a), to walk to N-1 from first capable, soon respective image data inputs to the new immigration display part shown in Fig. 8 (c), be spliced into complete enlarged image with the reservation display part in the former display image, described complete image is the image that needs demonstration after the described window of present embodiment moves to right, shown in Fig. 8 (d), then whole display part is the main window of described display window when moving to left in this moment Fig. 8 (d), newly moves into the display part and is corresponding subwindow.
By the described concrete process that moves horizontally as can be known, the described display system of the specific embodiment of the invention is when realizing moving horizontally, that moves counts still less, below set counting of moving horizontally and be P, the demonstration of display screen level is counted and is W, the vertical demonstration of display screen is counted and is that H, enlargement factor are E, the improved efficiency effect of the described system of the quantitative test specific embodiment of the invention.
When realizing the enlarged image horizontally moving functions in the source mode of windowing, image sealer is read in to count and is that W * H/E, image sealer write out to count and is W * H, then will read in to write out the addition of counting and obtain image sealer and always read and write points N
1, as shown in Equation (1):
N
1＝W×H×(1+1/E) (1)
When realizing the enlarged image horizontally moving functions with the described translation display packing of the specific embodiment of the invention, the image sealer 240 that band source purpose is windowed is read in to count and is P * H/E, and writing out counts is P * H, then reads in to write out total operation points N
2Shown in formula (2):
N
2＝P×H×(1+1/E) (2)
Relatively formula (1) and formula (2) are as can be known, when the described translation display packing of the application specific embodiment of the invention realizes moving horizontally of enlarged image, improved efficiency only depends on counting of at every turn moving horizontally, it is obvious more to move few more improved efficiency of counting, move and in fact image can be level and smooth when image is moved, counting of moving horizontally usually only account for that whole screen display width counts about 5%～12.5%, generally promptly, use the described translation display packing of the specific embodiment of the invention and realize that moving horizontally of enlarged image will have 87.5～95% improved efficiency when showing.Even the loss of caused justified margin when considering to amplify, window with direct use image sealer source or part that other method will need to amplify directly is amplified to the method that screen size shows and compares, using the described translation display packing of the specific embodiment of the invention will have improved efficiency more than 80% in common application.Below be example with 800 * 600 display screen, illustrate when moving horizontally difference when counting, total points N of the required read-write of the described translation display packing of the specific embodiment of the invention
2, and window with direct use image sealer source or part that other method will need to amplify directly is amplified to the efficient that method that screen size shows is compared and promoted, as shown in table 1.
Table 1
Equally, as shown in table 2 for being example with 640 * 480 display screen, illustrate when moving horizontally difference when counting, total points N of the required read-write of the described translation display packing of the specific embodiment of the invention
2, and window with direct use image sealer source or part that other method will need to amplify directly is amplified to the efficient that method that screen size shows is compared and promoted.
Table 2
Data presentation as shown in Table 1 and Table 2, when enlarged image moves horizontally demonstration, when single step move count less than display screen 12.5% the time, improved efficiency is fairly obvious, even counting that single step is moved surpasses at 12.5% o'clock of display screen, improved efficiency is also bigger, therefore, the bandwidth that the described translation display packing of the specific embodiment of the invention has been saved SDRAM 250 greatly, and do not consume extra SDRAM storage space, thereby make digital display terminal main control chip obtain higher performance with lower cost.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (9)
1, a kind of amplifying image translation device shown, this device comprises CPU, lcd controller, SDRAM, sdram controller, image decoder and LCD display, it is characterized in that, this device also comprises the image sealer that band source purpose is windowed, wherein CPU will treat that by sdram controller magnification region takes out from SDRAM, the image sealer of windowing by band source purpose is amplified to the display screen size with the image-region that extracts then, delivers at last in the lcd controller to show for LCD display.
2, a kind of amplifying image translation device shown according to claim 1, it is characterized in that, the image sealer that described band source purpose is windowed comprises image sealer, source address generator and the purpose address generator of windowing of windowing, wherein image sealer reads source data by the window address of address generator setting, source, after treatment by the purpose address output storage that address generator is provided with of windowing.
3, a kind of amplifying image translation device shown according to claim 1 is characterized in that, adjacent two row view data storage addresses are continuous among the described SDRAM.
4, adopt the method for a kind of amplifying image translation demonstration of the described device realization of claim 1, it is characterized in that this method may further comprise the steps:
Step S600: the source of the setting address generator of windowing comprises main pane base address, source and window size;
Step S610: the purpose address generator of windowing is set, comprises the purpose main pane base address of storing data and the size of windowing;
Step S620: enlargement factor is set and starts image sealer, the source subwindow that step S600 determines from SDRAM reads in source data;
Step S630: after source data carried out processing and amplifying, write the purpose subwindow that step S610 determines among the SDRAM;
Step S640: revise the LCD controlled variable;
Step S650: by the image after the LCD display process.
5, the method for a kind of amplifying image translation demonstration according to claim 4, it is characterized in that, the source main window is for amplifying the storage area of preceding former entire image among the described step S600, and the source subwindow is newly to move into the preceding image data storage zone of the corresponding amplification of the part that shows; The purpose main pane is respectively the viewing area of viewing area of amplifying the back entire image and the parts of images that newly moves among the described step S610.
6, the method for a kind of amplifying image translation demonstration according to claim 5, it is characterized in that, described step S600 further comprises: described CPU is according to the moving direction of display window and count, calculate the new zone that moves into image, again according to the enlargement factor of image, calculate the source data of described new immigration image-region before amplification, this source data correspondence position in the former entire image before amplification is the position of source subwindow in the main window of source, and address generator obtains main pane base address, source and the size that described image sealer needs thereby source of configuration is windowed.
7, the method for a kind of amplifying image translation demonstration according to claim 5, it is characterized in that, when described SDRAM has two display buffers zone, described step S610 also further comprises: when display window moved to left, the former initial base address that the display buffer zone of current free time is all pointed in the initial base address of purpose main pane deducted the address that moves horizontally after counting; When display window moves to right, the former initial base address that the display buffer zone of current free time is pointed in the initial base address of purpose main window adds the address that moves horizontally after counting, and the start address of Central Plains, buffer area display image second row of current free time is pointed in the initial base address of purpose subwindow.
8, the method for a kind of amplifying image translation demonstration according to claim 5, it is characterized in that, when described SDRAM has single display buffer zone, described step S610 also further comprises: when display window moved to left, the initial base address of purpose main pane was all directly pointed to current base address, this viewing area and is deducted the address that moves horizontally after counting; When display window moved to right, the initial base address of purpose main window was directly pointed to current base address, this viewing area and is added the address that moves horizontally after counting, and the start address of former display image second row is pointed in the initial base address of purpose subwindow.
9, the method for a kind of amplifying image translation demonstration according to claim 4, it is characterized in that, described step S640 further comprises: when display window moved to left, lcd controller was modified to current output base address with the base address of exporting and deducts the address that moves horizontally after counting; When display window moves to right, lcd controller will be exported the base address and be modified to current initial base address and add the address that moves horizontally after counting.
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| CN200810142102A Expired - Fee Related CN101661715B (en) | 2008-08-26 | 2008-08-26 | Device and method for amplifying image translation display |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110231968A (en) * | 2018-03-06 | 2019-09-13 | 联发科技股份有限公司 | Improve the method and processor of the rendering of graphical interfaces |
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|---|---|---|---|---|
| JP3339284B2 (en) * | 1996-01-29 | 2002-10-28 | 三菱電機株式会社 | Large screen display method |
| CN1780379A (en) * | 2004-11-19 | 2006-05-31 | 厦门华侨电子企业有限公司 | Method for selecting screen menu of TV-set |
| JP4929630B2 (en) * | 2005-07-06 | 2012-05-09 | ソニー株式会社 | Imaging apparatus, control method, and program |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110231968A (en) * | 2018-03-06 | 2019-09-13 | 联发科技股份有限公司 | Improve the method and processor of the rendering of graphical interfaces |
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| CN101661715B (en) | 2012-10-03 |
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