CN102186110A - Method for processing pictures and STB (set top box) - Google Patents

Method for processing pictures and STB (set top box) Download PDF

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Publication number
CN102186110A
CN102186110A CN 201110121323 CN201110121323A CN102186110A CN 102186110 A CN102186110 A CN 102186110A CN 201110121323 CN201110121323 CN 201110121323 CN 201110121323 A CN201110121323 A CN 201110121323A CN 102186110 A CN102186110 A CN 102186110A
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China
Prior art keywords
picture
full impregnated
described picture
bright
data bitmap
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Granted
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CN 201110121323
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Chinese (zh)
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CN102186110B (en
Inventor
徐佳宏
朱吕亮
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Shenzhen Ipanel TV Inc
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Shenzhen Ipanel TV Inc
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Priority to CN 201110121323 priority Critical patent/CN102186110B/en
Publication of CN102186110A publication Critical patent/CN102186110A/en
Priority to HK12101095.8A priority patent/HK1160713A1/en
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Publication of CN102186110B publication Critical patent/CN102186110B/en
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Abstract

The embodiment of the invention discloses a method for processing pictures. The method is characterized by comprising the following steps: carrying out statistics on a color value of each pixel point in bitmap data of decoded pictures; judging whether the pictures are fully transparent pictures or not in accordance with the statistic result; and if the pictures are the fully transparent pictures, making fully transparent markers for the fully transparent pictures, thus the pictures are checked to set the fully transparent markers if the fully transparent pictures are reused later, and all the fully transparent pictures are not required to decode. Compared with the prior art, the method for processing the pictures is utilized to save the time of decoding the fully transparent pictures and fasten the speed of displaying background pictures which are overlaid with the fully transparent pictures. The embodiment of the invention also provides a corresponding STB (set top box).

Description

A kind of photograph processing method and set-top box
Technical field
The present invention relates to the picture processing technology field, be specifically related to a kind of photograph processing method and set-top box.
Background technology
The solution that present Digital Television is promoted the use of, normally the television set to existing reception analog signal is equipped with set-top box, but because in the set-top box environment, the font that browser is supported is limited, generally has only black matrix, does not satisfy demands of applications.Usually, each column title of the portal page of application all is to make on PC with artistic calligraphy earlier, forms a pictures, as the background picture of using portal page.
For example, be used for browser TV, that be installed on set-top box, generally do not have mouse and keyboard at present, most family has only a remote controller.So, generally be four buttons up and down to the operation on the page.Under the default situations, have four focuses in the page, but full page only has a firing line.Browser can respond user's button, and according to the relative position relation of focus in the page, moving focal point.
Consult Figure 1A, the effect that shows in the browser on PC can be chosen the focus that needs by mouse or keyboard.But at set-top box environment, owing to there is not mouse, the general highlighted demonstration current active of the focus frame focus of using, and with first focus of the page as the acquiescence focus that enters the page, so during the browser display page, effect is Figure 1B~1F, enter from first focus, choose second focus to the right, choose the 4th focus downwards, choose the 3rd focus left, upwards choose first focus.
If above-mentioned focus example page need to adopt lishu, but set-top box environment does not have lishu.Need produce a background picture earlier, effect is as follows: consult Fig. 2 A.
Owing in the background picture needed Word message has been arranged, so page body matter only needs the focus frame of a blank.Common way is that the middle literal in the background picture of application portal page is replaced to a transparent picture, and the wide height of transparent picture is adjusted into area size corresponding in the background picture of using portal page, after using transparent picture to replace the middle literal of the background picture of using portal page, the display effect of transparent picture and background picture is as follows: consult Fig. 2 B~2F.
The principle that the stack of transparent picture and background picture shows in the prior art is that transparent picture and background picture are decoded respectively, generate data bitmap, the point that is about on transparent picture and the background picture is filled in the region of memory of display device, transparent picture is filled into that the set of pairing pixel is exactly the data bitmap of transparent picture behind the region of memory of described display device, and background picture is filled into that the set of pairing pixel is exactly the data bitmap of background picture behind the region of memory of described display device.
Each pixel in the data bitmap has transparent, four kinds of color values of red, green and blue.Because of the color value of all pixels on the data bitmap of transparent picture all is that full impregnated is bright, so the just content of background picture that shows on the display device.
Transparent picture of the prior art is identical with background picture when showing with the background picture stack, also to decode, after decoding, to judge at the color value of each pixel in the data bitmap, if the result who judges is that the color value of this pixel is that full impregnated is bright, just do not show this transparent picture.If a transparent picture is used by many background pictures, this transparent picture will repeatedly be decoded, and this decoding is repeatedly judged repeatedly, has wasted a large amount of time, has prolonged the display speed of background picture.
When Installed System Memory is not enough, can discharge the shared internal memory of data bitmap of picture.When Show Picture next time, again picture is decoded again, regenerate data bitmap.Discharge internal memory and guaranteed that system under the low-resource environment, still can Show Picture.But,, be the strategy that typically changes the space with the time so need pay time cost owing to need decoding again.
When the Installed System Memory wretched insufficiency, can further discharge the shared internal memory of picture initial data, described initial data is meant the data that system stored when Loading Image.When Show Picture next time, need reload picture, decoding with the longer time, is changed more space again.
Summary of the invention
The embodiment of the invention provides a kind of image processing method and set-top box of accelerating the picture display speed.
A kind of photograph processing method comprises:
Check whether picture is provided with the bright mark of full impregnated, and it is the bright picture of full impregnated that the bright mark of described full impregnated is used to indicate described picture;
If the bright mark of full impregnated is arranged, the described picture of then not decoding;
If the bright mark of no full impregnated, then:
Described picture is decoded, obtain data bitmap; Described data bitmap is the set that all pixels of described picture are filled into pairing pixel behind the region of memory of display device;
Add up the color value of each pixel in the data bitmap of described picture;
According to the color value of each pixel in the data bitmap of described picture, judge whether described picture is the bright picture of full impregnated;
If the bright mark of full impregnated is set for described picture;
Indicated number equipment does not show described picture;
If not, indicate described display device to show described picture.
A kind of set-top box comprises:
Inspection unit is used to check whether picture is provided with the bright mark of full impregnated, and it is the bright picture of full impregnated that the bright mark of described full impregnated is used to indicate described picture;
After described inspection unit is checked through described picture the bright mark of full impregnated is arranged, the described picture of not decoding;
Decoding unit, be used for after described inspection unit is checked through described picture and does not have the bright mark of full impregnated, described picture is decoded, obtain data bitmap, described data bitmap is the set that all pixels of described picture are filled into pairing pixel behind the region of memory of described display device;
Statistic unit is used for adding up the color value of each pixel of the data bitmap of described picture;
Judging unit is used for the color value according to each pixel of the data bitmap of described picture, judges whether described picture is the bright picture of full impregnated;
Flag setting unit is used for after described judgment unit judges goes out described picture and is the bright picture of full impregnated, the bright mark of full impregnated is set for described picture;
Indicating member is used for indicating described display device not show described picture after described flag setting unit is provided with the bright mark of full impregnated for described picture;
Described indicating member is further used for indicating described display device to show described picture after described judgment unit judges goes out described picture and is not the bright picture of full impregnated.
The embodiment of the invention adopts after the picture decoding, color value to each pixel in the decoded picture data bitmap is added up, judge according to statistics whether picture is the bright picture of full impregnated, if the bright picture of full impregnated, do a bright mark of full impregnated for the bright picture of described full impregnated, reuse the bright picture of described full impregnated later on, be provided with the bright mark of full impregnated, the bright picture of described full impregnated of just not decoding as long as check out picture.Compared with prior art, photograph processing method provided by the invention has been saved the decode time of the bright picture of full impregnated, has accelerated the display speed with the background picture of the bright picture of full impregnated stack.
Description of drawings
Figure 1A is the displayed map of boldface type focus picture on PC;
Figure 1B~1F is the design sketch that the boldface type focus chart shows by set-top box;
Fig. 2 A is the displayed map of lishu font focus picture on PC;
Fig. 2 B~2F is the design sketch that lishu font focus chart shows by set-top box;
Fig. 3 is the first embodiment schematic diagram of image processing method of the present invention;
Fig. 4 is the second embodiment schematic diagram of image processing method of the present invention;
Fig. 5 A is the displayed map of application scenarios symbol picture on PC of the inventive method;
Fig. 5 B is the design sketch that the application scenarios symbol picture of the inventive method shows by set-top box;
Fig. 6 is the first embodiment schematic diagram of set-top box of the present invention;
Fig. 7 is the second embodiment schematic diagram of set-top box of the present invention;
Fig. 8 is the 3rd an embodiment schematic diagram of set-top box of the present invention;
Fig. 9 is the 4th an embodiment schematic diagram of set-top box of the present invention.
Embodiment
The embodiment of the invention provides a kind of photograph processing method, is used to accelerate the display speed of picture.The embodiment of the invention also provides corresponding set-top box.Below be elaborated respectively.
See also Fig. 3, first embodiment of image processing method of the present invention comprises:
101, check whether picture is provided with the bright mark of full impregnated, if picture has the bright mark of full impregnated, execution in step 102 is not if picture has the bright mark of full impregnated, execution in step 103;
It is the bright picture of full impregnated that the bright mark of described full impregnated is used to indicate described picture, and all right described picture of convergent-divergent after being checked through described picture the bright mark of full impregnated is arranged if the picture behind the convergent-divergent has been checked through the bright mark of full impregnated in use, does not need decoding equally.
102, the described picture of not decoding;
Be to decode before picture shows, because of the existing bright mark of full impregnated of described picture, indicating described picture is the bright picture of full impregnated, does not need to show, so also do not need to decode.
103, described picture is decoded, obtain data bitmap;
Decoding picture is for being filled into the pixel of picture the region of memory of display device, and described data bitmap is the set that all pixels of described picture are filled into pairing pixel behind the region of memory of described display device.
104, the color value of each pixel in the data bitmap of the described picture of statistics;
For the ARGB8888 color format, the color of a pixel has four kinds, is respectively transparent alpha, red red, and green green, blue blue, statistics can obtain the color value of each pixel.
105,, judge whether described picture is the bright picture of full impregnated according to the color value of each pixel in the data bitmap of described picture;
If the color value of each pixel in the data bitmap all is transparent, then judging described picture is the bright picture of full impregnated, and execution in step 106 is not if the color value of each pixel in the data bitmap is transparent entirely, then judging described picture is not the bright picture of full impregnated, execution in step 108.
106, the bright mark of full impregnated is set for described picture;
After step 105 is judged described picture and is the bright picture of full impregnated, the bright mark of full impregnated is set for described picture, the picture that the bright mark of full impregnated was set is when using next time, by checking that the bright mark of full impregnated does not just need to decode again, show again, after the bright mark of full impregnated being set for described picture, all right described picture of convergent-divergent, picture behind the convergent-divergent does not need to decode in use after being checked through the bright mark of full impregnated again.
107, indicated number equipment does not show described picture;
After step 106 was provided with the bright mark of full impregnated for described picture, because of described picture is the bright picture of full impregnated, so indicated number equipment does not show described picture.
108, the described display device of indication shows described picture;
After step 105 was judged described picture and is not the bright picture of full impregnated, indicated number equipment showed described picture.
In the present embodiment, after being checked through picture the bright mark of full impregnated being arranged, the described picture of no longer decoding, do not have to obtain data bitmap after the picture decoding of the bright mark of full impregnated, after judging described picture and be the bright picture of full impregnated according to the color value of each pixel in the data bitmap, the bright mark of full impregnated is set for described picture, when using next time, does not just need to decode again, directly do not show described picture.Compared with prior art, the photograph processing method that the embodiment of the invention provides has been saved the decode time and the demonstration time of the bright picture of full impregnated, has accelerated the display speed with the background picture of the bright picture stack of full impregnated.
See also Fig. 4, second embodiment among the inventive method embodiment comprises:
201, be checked through picture and be provided with the bright mark of full impregnated;
When Out of Memory, the shared memory headroom that need to discharge temporary transient no picture is guaranteed the normal demonstration of the picture that using, before discharging the shared memory headroom of picture, check temporarily whether be provided with the bright mark of full impregnated earlier without picture, be provided with the bright mark of full impregnated, execution in step 202 if be checked through picture.
202, check whether described picture has corresponding data bitmap, if execution in step 203 is arranged;
The data bitmap of picture occupies internal memory, after being checked through picture and being provided with the bright mark of full impregnated, reexamine this picture whether corresponding data bitmap is arranged, each picture that has the bright mark of full impregnated all is the data bitmap that a correspondence is arranged, if there is not the internal memory that the data bitmap of this picture is shared to discharge before, the data bitmap that can also be checked through this picture in internal memory exists.
203, the bright mark of full impregnated that keeps described picture;
The picture that is provided with the bright mark of full impregnated does not need to decode again, shows, so will keep the bright mark of full impregnated of this picture before discharging the shared memory headroom of picture again.
204, discharge the shared internal memory of data bitmap of described picture;
Kept the bright mark of full impregnated of described picture in step 203 after, discharge the shared internal memory of data bitmap of described picture, when described picture reused, being checked through this picture had the bright mark of full impregnated, did not just need to decode again, showed again.
205, discharge the shared internal memory of initial data of described picture;
If during the memory headroom wretched insufficiency, can also be after step 204 have discharged the shared internal memory of the data bitmap of picture, further discharge the shared internal memory of initial data of picture, the initial data of picture is the data of being stored when Loading Image, when reusing, described picture only need load this picture, after being checked through this picture the bright mark of full impregnated arranged, do not need to decode again, show again.
On the basis of first embodiment, the second embodiment of the present invention, when low memory, the shared internal memory of data bitmap that is provided with the picture of the bright mark of full impregnated is discharged, the shared internal memory of initial data that will be provided with the picture of the bright mark of full impregnated during the internal memory wretched insufficiency discharges, as long as when the next use of described picture, be checked through the bright mark of full impregnated, just do not need to decode again, show again.Compared with prior art, the photograph processing method that the embodiment of the invention provides after discharging the shared internal memory of picture, does not need to decode once more to the picture that is provided with the bright mark of full impregnated, saved the time, accelerated display speed with the background picture of the bright picture of full impregnated stack.
For ease of understanding, with a concrete application scenarios photograph processing method of describing in the foregoing description is described in detail below, concrete:
Need to show the picture shown in Fig. 5 B in the page, need on PC, make the symbol picture shown in Fig. 5 A earlier, be loaded in the set-top box, re-use a middle literal among the bright picture replacement of full impregnated Figure 1B, and the wide height of the bright picture of full impregnated is adjusted into area size corresponding in the symbol picture.
After using the middle literal among the bright picture replacement of full impregnated Figure 1B, check whether symbol picture and the bright picture of full impregnated are provided with the bright mark of full impregnated, be checked through the bright picture of symbol picture and full impregnated the bright mark of full impregnated all is not set, symbol picture and the bright picture of full impregnated are decoded, obtain the data bitmap of symbol picture and the data bitmap of the bright picture of full impregnated.
Transparent, four kinds of colors of red, green and blue that each pixel in the data bitmap of the data bitmap of symbol picture and the bright picture of full impregnated all has count the color value of each pixel in the data bitmap of the color value of each pixel in the data bitmap of symbol picture and the bright picture of full impregnated.
Judging the symbol picture according to the color value of each pixel in the data bitmap of symbol picture is not the bright picture of full impregnated, indicated number equipment displaying symbol picture.Judging the bright picture of full impregnated according to the color value of each pixel in the bright picture of full impregnated is the bright picture of full impregnated, the bright mark of full impregnated is set for the bright picture of full impregnated, and indicated number equipment does not show the bright picture of full impregnated.
If the lishu font picture among the next displayed map 2B uses the bright picture of full impregnated that the bright mark of full impregnated was set, behind the bright mark of the full impregnated of checking out the bright picture of full impregnated, the bright picture of this full impregnated of no longer decoding, direct decoding lishu font picture, after judging lishu font picture and not being the bright picture of full impregnated, indicated number equipment shows this lishu font picture, compared with prior art, save the decode time and the demonstration time of the bright picture of full impregnated, accelerated the display speed of lishu font picture.
When Installed System Memory is not enough, after being checked through the bright mark of full impregnated of the bright picture of full impregnated, check whether the bright picture of this full impregnated has corresponding data bitmap, if be checked through corresponding data bitmap, the bright mark of full impregnated that keeps the bright picture of this full impregnated discharges the shared internal memory of data bitmap of the bright picture of this full impregnated.If during the Installed System Memory wretched insufficiency, can further discharge the shared internal memory of initial data of the bright picture of this full impregnated again.Compared with prior art, the present invention has kept the bright mark of full impregnated of the bright picture of full impregnated, and when using the bright picture of this full impregnated next time, the bright picture of this full impregnated that do not need to decode has again been saved decode time, has accelerated the display speed with the picture of the bright picture of full impregnated stack.
Introduce the set-top box embodiment in the embodiment of the invention below, see also Fig. 6, the set-top box in the embodiment of the invention comprises:
Inspection unit 301 is used to check whether picture is provided with the bright mark of full impregnated, and it is the bright picture of full impregnated that the bright mark of described full impregnated is used to indicate described picture;
After described inspection unit 301 is checked through described picture the bright mark of full impregnated is arranged, the described picture of not decoding;
Decoding unit 302 is used for after described inspection unit 301 is checked through described picture and does not have the bright mark of full impregnated described picture being decoded, and obtains data bitmap; Described data bitmap is the set that all pixels of described picture are filled into pairing pixel behind the region of memory of described display device;
Statistic unit 303 is used for adding up the color value of each pixel of the data bitmap of described picture;
Judging unit 304 is used for the color value according to each pixel of the data bitmap of described picture, judges whether described picture is the bright picture of full impregnated;
Flag setting unit 305 is used for after described judging unit 304 is judged described picture and is the bright picture of full impregnated, the bright mark of full impregnated is set for described picture;
Indicating member 306 is used for indicating described display device not show described picture after described flag setting unit 305 is provided with the bright mark of full impregnated for described picture;
Indicating member 306 is further used for indicating described display device to show described picture after described judging unit 304 is judged described picture and is not the bright picture of full impregnated.
In the present embodiment, if inspection unit 301 is checked through picture be provided with the bright mark of full impregnated after, the described picture of not decoding.If inspection unit 301 is checked through picture the bright mark of full impregnated is not set, the described picture of decoding unit 302 decodings, obtain data bitmap, the color value of pixel in the statistic unit 303 statistics data bitmaps, judging unit 304 judges according to the color value of each pixel whether described picture is the bright picture of full impregnated, if the bright picture of full impregnated, flag setting unit 305 is provided with the bright mark of full impregnated for described picture, after flag setting unit 305 sets up the bright mark of full impregnated for described picture, indicating member 306 indicated number equipment do not show described picture, if it is not the bright picture of full impregnated that judging unit 304 is judged described picture, indicating member 306 indicated number equipment show described picture.The set-top box that the embodiment of the invention provides, after checking out that picture is provided with the bright mark of full impregnated, no longer decode time has been saved in decoding, has accelerated the display speed of the background picture that shows with the stack of the bright picture of full impregnated.
On the first embodiment basis of set-top box, consult Fig. 7, second embodiment of embodiment of the invention set-top box comprises:
Inspection unit 401 is used to check whether picture is provided with the bright mark of full impregnated, and it is the bright picture of full impregnated that the bright mark of described full impregnated is used to indicate described picture;
Unit for scaling 402 is used for the described picture of convergent-divergent.
After inspection unit 401 checked out that described picture is provided with the bright mark of full impregnated, the described picture of unit for scaling 402 convergent-divergents used to adapt to different wide high background pictures in the present embodiment.When the picture of the set-top box of the embodiment of the invention behind convergent-divergent uses, be provided with the bright mark of full impregnated, just no longer decode, saved the time, accelerated display speed with the background picture of the bright picture stack of full impregnated demonstration as long as check out picture.
Consult Fig. 8, the 3rd embodiment of embodiment of the invention set-top box comprises:
Flag setting unit 501 is used for the bright mark of full impregnated to the bright picture of full impregnated being set;
Unit for scaling 502 is further used for scaling pictures.
In the present embodiment, after flag setting unit 501 was provided with the bright mark of full impregnated for the bright picture of full impregnated, the described picture that the bright mark of full impregnated was set of unit for scaling 502 convergent-divergents used to adapt to different wide high background pictures.When the picture of the set-top box of the embodiment of the invention behind convergent-divergent uses, be provided with the bright mark of full impregnated, just no longer decode, saved the time, accelerated display speed with the background picture of the bright picture stack of full impregnated demonstration as long as check out picture.
Consult Fig. 9, the 4th embodiment of embodiment of the invention set-top box comprises:
Inspection unit 601 is further used for when described picture has the bright mark of full impregnated, checks whether described picture has corresponding data bitmap;
Stick unit 602 is used for keeping the bright mark of full impregnated of described picture after described inspection unit is checked through described picture corresponding data bitmap is arranged;
Releasing unit 603 is used for after described stick unit has kept the bright mark of full impregnated of picture discharging the shared internal memory of data bitmap of described picture.
Described releasing unit 603 is further used for discharging the shared internal memory of initial data of described picture, the data that described initial data is meant when Loading Image to be stored.
In the embodiment of the invention, after inspection unit 601 is checked through the picture that is provided with the bright mark of full impregnated corresponding data bitmap is arranged, stick unit 602 keeps the bright mark of full impregnated of picture, releasing unit 603 discharges the shared internal memory of data bitmap of picture, and releasing unit 603 can also further discharge the shared internal memory of initial data of picture.After picture has kept the bright mark of full impregnated,, just do not need decoding picture, saved decode time, accelerated the display speed of the background picture that shows with the bright picture stack of full impregnated as long as be checked through the bright mark of full impregnated when using next time.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of the foregoing description is to instruct relevant hardware to finish by program, this program can be stored in the computer-readable recording medium, and storage medium can comprise: ROM, RAM, disk or CD etc.
More than photograph processing method and set-top box that the embodiment of the invention provided are described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims (10)

1. a photograph processing method is characterized in that, comprising:
Check whether picture is provided with the bright mark of full impregnated, and it is the bright picture of full impregnated that the bright mark of described full impregnated is used to indicate described picture;
If the bright mark of full impregnated is arranged, the described picture of then not decoding;
If the bright mark of no full impregnated, then:
Described picture is decoded, obtain data bitmap; Described data bitmap is the set that all pixels of described picture are filled into pairing pixel behind the region of memory of display device;
Add up the color value of each pixel in the data bitmap of described picture;
According to the color value of each pixel in the data bitmap of described picture, judge whether described picture is the bright picture of full impregnated;
If the bright mark of full impregnated is set for described picture;
Indicated number equipment does not show described picture;
If not, indicate described display device to show described picture.
2. photograph processing method according to claim 1 is characterized in that, comprises checking out after described picture is provided with the bright mark of full impregnated:
The described picture of convergent-divergent.
3. photograph processing method according to claim 2 is characterized in that, comprises after the bright mark of full impregnated being set for described picture:
The described picture of convergent-divergent.
4. according to any described photograph processing method of claim 1~3, it is characterized in that, comprise after described picture is provided with the bright mark of full impregnated being checked through:
Check whether described picture has corresponding data bitmap;
If have, keep the bright mark of full impregnated of described picture;
Discharge the shared internal memory of data bitmap of described picture.
5. photograph processing method according to claim 4 is characterized in that, comprises behind the shared internal memory of the data bitmap of the described picture of described release:
Discharge the shared internal memory of initial data of described picture, the data that described initial data is meant when Loading Image to be stored.
6. a set-top box is characterized in that, comprising:
Inspection unit is used to check whether picture is provided with the bright mark of full impregnated, and it is the bright picture of full impregnated that the bright mark of described full impregnated is used to indicate described picture;
After described inspection unit is checked through described picture the bright mark of full impregnated is arranged, the described picture of not decoding;
Decoding unit, be used for after described inspection unit is checked through described picture and does not have the bright mark of full impregnated, described picture is decoded, obtain data bitmap, described data bitmap is the set that all pixels of described picture are filled into pairing pixel behind the region of memory of described display device;
Statistic unit is used for adding up the color value of each pixel of the data bitmap of described picture;
Judging unit is used for the color value according to each pixel of the data bitmap of described picture, judges whether described picture is the bright picture of full impregnated;
Flag setting unit is used for after described judgment unit judges goes out described picture and is the bright picture of full impregnated, the bright mark of full impregnated is set for described picture;
Indicating member is used for indicating described display device not show described picture after described flag setting unit is provided with the bright mark of full impregnated for described picture;
Described indicating member is further used for indicating described display device to show described picture after described judgment unit judges goes out described picture and is not the bright picture of full impregnated.
7. set-top box according to claim 6 is characterized in that: check out at inspection unit to comprise after described picture is provided with the bright mark of full impregnated:
Unit for scaling is used for the described picture of convergent-divergent.
8. set-top box according to claim 7 is characterized in that, comprises after flag setting unit is provided with the bright mark of full impregnated for described picture:
Described unit for scaling is further used for the described picture of convergent-divergent.
9. according to any described set-top box of claim 6~8, it is characterized in that, comprising:
Described inspection unit is further used for when described picture has the bright mark of full impregnated, checks whether described picture has corresponding data bitmap;
Stick unit is used for keeping the bright mark of full impregnated of described picture after described inspection unit is checked through described picture corresponding data bitmap is arranged;
Releasing unit is used for after described stick unit has kept the bright mark of full impregnated of picture discharging the shared internal memory of data bitmap of described picture.
10. set-top box according to claim 9 is characterized in that, comprises after described releasing unit discharges the shared internal memory of the data bitmap of described picture:
Described releasing unit is further used for discharging the shared internal memory of initial data of described picture, the data that described initial data is meant when Loading Image to be stored.
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