CN103634597B - A kind of method of decoding picture on 4K2K television set - Google Patents
A kind of method of decoding picture on 4K2K television set Download PDFInfo
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- CN103634597B CN103634597B CN201310571331.6A CN201310571331A CN103634597B CN 103634597 B CN103634597 B CN 103634597B CN 201310571331 A CN201310571331 A CN 201310571331A CN 103634597 B CN103634597 B CN 103634597B
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Abstract
The present invention relates to 4K2K technical field of television sets, the invention discloses a kind of method of decoding picture on 4K2K television set, it specifically comprises the following steps: that step one, television set chip read image data, whether the form judging image data is ARGB8888 form, image data is directly sent into HDMI virtual data source channels, otherwise be send into HDMI virtual data source channels after ARGB8888 form by the format conversion of image data, the output of HDMI virtual data source channels is connected to the dsp processor of television set chip; Step 2, dsp processor carry out hardware decode according to the processing mode of HDMI signal to image data, and decoded picture carries out convergent-divergent process, make picture be paved with whole screen; Step 3, picture is carried out interleave process, the output mode according to setting outputs on display screen and shows.The present invention does not increase any hardware cost, and use chip internal hardware dsp processor to decode, utilize the ability of chip itself, the picture reaching 4K2K rank exports.
Description
Technical field
The present invention relates to 4K2K television set, particularly relate to a kind of method of decoding picture on 4K2K television set.
Background technology
4K2K television set is the abbreviation of ultra high-definition display television set, generally we using 720P as high definition standard, 1080P is as full HD standard, the resolution of current technical high-definition television is the physical resolution that 1920*1080,4K2K television set then reaches more than 3840 × 2160, is the wide high each twice of common 1920*1080, four times of area, the total pixel number amount of display device reaches more than 8,000,000, and its visual effect breaches the limit of human eye retina, and image quality effect is very clear.
4K2K television set can carry out decoding process to HDMI video signal, thus the video pictures obtaining definition high shows.And to the decoding of picture television set chip of the prior art, the chip comprising 4K2K television set all still adopts conventional mode.By CPU (CPU) the operating software decoding program on television set chip to the usual manner of picture decode in television set, if existing application number is " CN200610032823.8 ", name is called " adopting the method for the television set display of high resolution JPEG picture of embedded Linux system ", publication date is on 08 23rd, 2006, it discloses a kind of method adopting the television set display of high resolution JPEG picture of embedded Linux system, comprise following steps: JPEG picture packed data corresponding for JPEG picture is divided at least two pieces by (1); (2) to decode successively every block JPEG picture packed data, the every block sub-pictures decoded is carried out convergent-divergent and is presented on OSD.The present invention is decoded by piecemeal the JPEG picture packed data of corresponding JPEG picture, and immediately carries out scale transformation and display.In internal memory, establish core buffer, decoding software, convergent-divergent software and software for display can work independently, and are independent of each other.Convergent-divergent is carried out again after complete although do not need whole JPEG picture packed data all to decode, also shown by software for display again after not needed the convergent-divergent of picture in its entirety, save a large amount of Decoding latency and convergent-divergent stand-by period, substantially increase display speed.But adopting operating software decoding program in central processing unit CPU to realize the decoding of picture, this is higher to the requirement of television set chip.
Although the decoding that common 4K2K television set chip can realize 4K2K vision signal under HDMI exports, the operational capability of its central processing unit CPU is not enough, cannot realize the software picture decode of 4K rank.Current Photo Browser process picture is on a television set all the mode according to UI, is decoded by operating software decoding program.And when cannot complete software 4K picture decode for the central processing unit CPU in television set chip, conventional way exports down-sampled for picture to 1080P, reduce the definition of picture so obviously, do not play the advantage of 4K2K ultra-high-definition television, cause Consumer's Experience not good.And if again use or design the television set chip of new support instead, mean the lifting of cost, again the developing of design, test, the input of a series of cost such as test and development risk.
Summary of the invention
The object of the invention is, for the low technical problem of the picture decode definition completing 4K rank under existing hardware condition, to the invention discloses a kind of method of decoding picture on 4K2K television set.
Object of the present invention is realized by following technical proposals:
A kind of method of decoding picture on 4K2K television set, it specifically comprises the following steps: that step one, television set chip read image data, whether the form judging image data is ARGB8888 form, image data is directly sent into HDMI virtual data source channels, otherwise be send into HDMI virtual data source channels after ARGB8888 form by the format conversion of image data, the output of HDMI virtual data source channels is connected to the dsp processor of television set chip; Step 2, dsp processor carry out hardware decode according to the processing mode of HDMI signal to image data, and decoded picture carries out convergent-divergent process, make picture be paved with whole screen; Step 3, picture is carried out interleave process, according to the output mode of setting picture outputted on display screen and show.
Further, above-mentioned image data reads or reads from the internal storage of television set from the outside port of television set.
Further, the outer end of above-mentioned television set is USB interface.
Further, the form of above-mentioned image data comprises ARGB8888 form, RGB565 form or ARGB4444 form.
Further, said method also comprises the image data after by convergent-divergent and incorporates image quality Circuit tuning, by exporting to display screen display after the adjustment of image quality Circuit tuning.
Further, the output mode of above-mentioned setting is 3940*2160/24/25/30HZ.
Further, said method is applicable to the ultra-high-definition television of screen resolution at more than 1920*1080.
Further, said method also comprises the lifting process of picture effect, and it is specially and adopts Gamma to correct the effect promoting picture.
By adopting above technical scheme, the present invention possesses following beneficial effect: arrange HDMI virtual data source channels in the present invention, by this passage image data sent in hardware dsp processor and carry out hardware decode, do not increase any hardware cost, when chip software decoding can not reach 4K2K rank, use chip internal hardware dsp processor to decode, utilize the ability of chip itself, the picture reaching 4K2K rank exports.Do not increase any hardware cost, greatly reduce R&D costs and risk, improve the sensory effects of user.
Accompanying drawing explanation
Fig. 1 is the flow chart of the method for decoding picture on 4K2K television set.
Embodiment
Below in conjunction with Figure of description, the present invention is further detailed explanation.
The flow chart of the method for decoding picture on 4K2K television set as shown in Figure 1.The invention discloses a kind of method of decoding picture on 4K2K television set, it specifically comprises the following steps: that step one, television set chip read image data, whether the form judging image data is ARGB8888 form, image data is directly sent into HDMI virtual data source channels, otherwise be send into HDMI virtual data source channels after ARGB8888 form by the format conversion of image data, the output of HDMI virtual data source channels is connected to the dsp processor of television set chip; Step 2, dsp processor carry out hardware decode according to the processing mode of HDMI signal to image data, decoded picture carries out convergent-divergent process, picture is made to be paved with whole screen, multiple convergent-divergent algorithm can be adopted here to carry out cutting to picture, this belongs to routine techniques, is not described in detail at this; Step 3, picture is carried out interleave process, the output mode according to setting outputs on display screen and shows.The chip of 4K2K television set, chip can support 4K, illustrates that this chip can meet decoding and the output of 4K2K on hardware capabilities and bandwidth, and the decoding that therefore its dsp processor can complete 4K2K video data under HDMI exports.HDMI virtual data source channels is set in the present invention, by this passage image data sent in hardware dsp processor and carry out hardware decode, do not increase any hardware cost, when chip software decoding can not reach 4K2K rank, chip internal hardware dsp processor is used to decode, utilize the ability of chip itself, the picture reaching 4K2K rank exports.Do not increase any hardware cost, greatly reduce R&D costs and risk, improve the sensory effects of user.
Further, above-mentioned image data can read from the outside port of television set, and such as USB port reads, and also can read from the internal storage of television set, read in USB storage built-in in such as TV SKD.Read and judge that rear dsp processor of sending into carries out hardware decode, because be hardware decode, its processing speed and efficiency are all fast than operating software decoding program, the most important thing is the resource not needing to consume central processing unit CPU, make can both realize on the chip of existing 4K2K television set.And the effect of its decoding is much more clear than existing 1080P output.
Further, the form of above-mentioned image data comprises ARGB8888 form, and ARGB8888 refers to A, R, G, B data recording each pixel respectively with 8 bit, wherein A:Alpha transparency; R:Red is red; G:Green is green; B:Blue is blue.In addition, also comprise such as: RGB565, ARGB4444 etc. form.For ARGB4444, be converted into the detailed process of ARGB8888 for take out A respectively, R, G, B these four values, and then be combined into the value of a 8bit, other transfer process is similar, is described no longer in detail at this.
Further, said method also comprises the image data after by convergent-divergent and incorporates image quality Circuit tuning, by exporting to display screen display after the adjustment of image quality Circuit tuning.The image data cut by convergent-divergent incorporates image quality Circuit tuning, and image quality is got a promotion, and improves the impression of user.
Further, the output mode of above-mentioned setting is 3940*2160/24/25/30, can select different output output formats, can be defaulted as 2160P24 according to different display panel type and size.Above-mentioned television set chip is LM37iSDU or ZLM37E-iUM.Ultra high-definition form in HDMI1.4 specification comprise 3840*2160@24 25 30hz and 4096*2160@24hz.The output format of the decoded picture of the present invention is the ultra high-definition form described in HDMI specification, and picture display reaches 4K rank.
Further, said method is applicable to the ultra-high-definition television of screen resolution at more than 1920*1080.
Simultaneously because the restriction of DSP hardware decode, method of the present invention can only provide simple convergent-divergent to change, cannot accomplish the operation of the more complicated such as excessive animation, this is also adopt central processing unit CPU to load software to realize the major reason of picture decode in prior art.
Further, said method also comprises picture effect lifting process, and it specifically comprises employing Gamma correction and processes picture, or adopts NR and/or DLC algorithm etc. to carry out effect promoting.
Here by specific embodiment, invention has been described in detail, there is provided the description of above-described embodiment in order to make those skilled in the art manufacture or use the present invention, the various amendments of these embodiments are easy understand for a person skilled in the art.The present invention is not limited to these examples, or some aspect wherein.Scope of the present invention is described in detail by additional claim.
Above-mentioned explanation illustrate and describes a preferred embodiment of the present invention, but as previously mentioned, be to be understood that the present invention is not limited to the form disclosed by this paper, should not regard the eliminating to other embodiments as, and can be used for other combinations various, amendment and environment, and can in invention contemplated scope described herein, changed by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change do not depart from the spirit and scope of the present invention, then all should in the protection range of claims of the present invention.
Claims (6)
1. the method for a decoding picture on 4K2K television set, it specifically comprises the following steps: that step one, television set chip read image data, whether the form judging image data is ARGB8888 form, image data is directly sent into HDMI virtual data source channels, otherwise be send into HDMI virtual data source channels after ARGB8888 form by the format conversion of image data, the output of HDMI virtual data source channels is connected to the dsp processor of television set chip; Step 2, dsp processor carry out hardware decode according to the processing mode of HDMI signal to image data, and decoded picture carries out convergent-divergent process, make picture be paved with whole screen; Step 3, picture is carried out interleave process, to be outputted on display screen by picture according to the output mode of setting and show, described method also comprises picture effect lifting process.
2. the method for decoding picture on 4K2K television set as claimed in claim 1, is characterized in that described image data reads or reads from the internal storage of television set from the outside port of television set.
3. the method for decoding picture on 4K2K television set as claimed in claim 2, is characterized in that the outer end of described television set is USB interface.
4. the method for decoding picture on 4K2K television set as claimed in claim 3, is characterized in that the form of described image data comprises ARGB8888 form, RGB565 form or ARGB4444 form.
5. the method for decoding picture on 4K2K television set as claimed in claim 4, is characterized in that described method also comprises the image data after by convergent-divergent and incorporates image quality Circuit tuning, by exporting to display screen display after the adjustment of image quality Circuit tuning.
6. the method for decoding picture on 4K2K television set as claimed in claim 5, it is characterized in that described picture effect lifting process its be specially and adopt Gamma to correct the effect promoting picture.
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Citations (3)
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| CN1822656A (en) * | 2006-01-13 | 2006-08-23 | 深圳创维－Rgb电子有限公司 | Method for displaying high resolution JPEG picture using embedded Linux system TV set |
| EP2451173A1 (en) * | 2009-06-29 | 2012-05-09 | Sony Corporation | Stereoscopic image data transmitter, method for transmitting stereoscopic image data, stereoscopic image data receiver, and method for receiving stereoscopic image data |
| CN103167257A (en) * | 2011-12-14 | 2013-06-19 | 索尼公司 | Display device, display method, transmitting device and transmitting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1822656A (en) * | 2006-01-13 | 2006-08-23 | 深圳创维－Rgb电子有限公司 | Method for displaying high resolution JPEG picture using embedded Linux system TV set |
| EP2451173A1 (en) * | 2009-06-29 | 2012-05-09 | Sony Corporation | Stereoscopic image data transmitter, method for transmitting stereoscopic image data, stereoscopic image data receiver, and method for receiving stereoscopic image data |
| CN103167257A (en) * | 2011-12-14 | 2013-06-19 | 索尼公司 | Display device, display method, transmitting device and transmitting method |
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