CN1138415C - Decoder for high-definition static picture - Google Patents
Decoder for high-definition static picture Download PDFInfo
- Publication number
- CN1138415C CN1138415C CNB001210742A CN00121074A CN1138415C CN 1138415 C CN1138415 C CN 1138415C CN B001210742 A CNB001210742 A CN B001210742A CN 00121074 A CN00121074 A CN 00121074A CN 1138415 C CN1138415 C CN 1138415C
- Authority
- CN
- China
- Prior art keywords
- buffering area
- picture frame
- picture
- decoder
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
The present invention relates to a decoding processor for a high-resolution still picture, which comprises a memory device and a decoding device, wherein the decoding device decodes and stores bit stream data stored in a bit stream buffer zone. When a still picture is to be displayed, a picture frame buffer zone only stores partial picture frame data corresponding to the picture for output. Other picture frame data is simultaneously and instantaneously decoded and stored in a temporary buffer zone when the still picture is displayed to output and display the high-resolution still picture matched with the output of the picture frame buffer zone. Therefore, the high-resolution still picture can be decoded only by limited memory space.
Description
Technical field
The present invention is relevant a kind of still frame decoding processing device, refers to a kind of decoder for high-definition static picture of being realized with limited memory especially.
Background technology
Along with popularizing of image and multimedia application, video signal compression and decompression technique are recently by a large amount of uses, as MPEG1, MPEG2 and H.263 wait, its calculation framework as shown in Figure 8, the bit element flow data of being read by Storage Media 88 is to send into variation length decoder (VLD) 81 so that the Huffman data is untied, by carrying out length decoder (RLD) 82 spot patch is sent into inverse DCT (INVQ) 83 to obtain the data of time frequency domain, after anti-discrete cosine is changed the processing of (IDCT) unit 84 to finish the operation of decoding after good again.And in general system applies; as VCD; SVCD or DVD etc.; there is the application of high-res still frame in regular meeting; and the data of these high-ress must be through being stored in the dynamic random access memory (DRAM) 85 after the decoding; to provide TV pick-up attacnment 86 to show needed data; application with VCD; the needed data quantity of PAL full figure frame picture is 704 * 576 * 1.5=608; 256 bit groups; so in general VCD used, the DRAM that system provided was the 4M bit, is equivalent to 512K bit group; it is promptly less than 608; 256 bit groups, also also need other storage requirement in system, as handling OSD (On Screen Display) and the required space of voice signal; therefore, desire on limited memory, to reach aforesaid function its difficulty is arranged in fact.
For solving aforesaid problem, the most direct mode is to abandon the image data of part to reduce required storage space, right this but obviously can reduce the resolution of output, so image quality of impairment output, therefore, how the still frame of high-res can be provided with limited storage space, is a problem that needs to be resolved hurrily in fact.
The inventor whence originally in the spirit of positive invention, is urgently thought a kind of " decoder for high-definition static picture " that can address the above problem because of in this, and several times research experiment is eventually to finishing this novel progressive invention.
Summary of the invention
The objective of the invention is is providing a kind of decoder for high-definition static picture, and it can only solve the still frame of high-res with limited storage space, and the operating frequency of its decoding framework also need not increase.
For reaching aforesaid purpose, decoder for high-definition static picture of the present invention includes a storage arrangement and a decoding device, this storage arrangement has the bit element flow buffering area, temporary transient buffering area and picture frame buffering area, this bit element flow buffering area is to store the bit element flow data that has from a Storage Media, this decoding device is decoded the bit element flow data in this bit element flow buffering area, and decoded picture frame data stored to this picture frame buffering area or this temporary transient buffering area, wherein, when showing still frame, this picture frame buffering area is only stored the part picture frame data corresponding to this picture, for output, remaining picture frame data then is when showing still frame, immediately solve and be stored in this temporary transient buffering area, so that with output and cooperate the output of this picture frame buffering area and show the still frame of a high-res.
Wherein the picture frame buffering area is only stored half the picture frame data corresponding to this picture, and this temporary transient buffering area is that having than this picture frame buffering area is little storage space, for storing the picture frame data that solves immediately.
Be represented after wherein the picture frame data in this bit element flow buffering area solves via this decoding device with a plurality of huge row.
Wherein this picture frame buffering area is only stored the huge row of part corresponding to the picture frame data of this picture, and this temporary transient buffering area is the storage space with at least one huge row.
Wherein this picture frame buffering area is huge row of even number of only storing in the mode of striding a huge row corresponding to the picture frame data of this picture.
Wherein the height of huge row of this temporary transient buffering area is half of huge row of this picture frame buffering area.
Wherein in the figure field of when showing still frame, being play, at the time point that switches the figure field of playing still frame, be in the figure field time of Shang Tuchang, to carry out the decoding first time from the bit element flow of a picture frame of bit element flow buffering area via the image-decoding device, with only huge row decoding of dual numbers, and the result that will solve is stored in the picture frame buffering area, and a figure field time in remaining figure field, be that the bit element flow from a picture frame of bit element flow buffering area is carried out secondary decoding, with huge row decoding to odd number.
Wherein this secondary decoding is repeatedly to carry out, and when the bit element flow buffering area reads data, is to set a picture scope for periodically repeating reading operation with two locators.
Wherein this image-decoding device is to include variation length decoder, execution length decoder, inverse DCT and anti-discrete cosine converting unit, and the data of this bit element flow data buffering area is to be read into this variation length decoder, handling by this execution length decoder, inverse DCT and anti-discrete cosine converting unit in regular turn and to decode, and the data that solves is stored picture frame buffering area or temporary transient buffering area to this storage arrangement by this anti-discrete cosine converting unit.
Wherein this variation length decoder is to have the ability to abandon unwanted huge ability, so that decode in the mode of jumping huge row.
Wherein this image-decoding device also includes a direct current fallout predictor, so that to keep the direct current composition of the bit element flow data of handling through this variation length decoder.
Wherein this anti-discrete cosine converting unit is for the data that will store to this temporary transient buffering area, is that the data that a computing is obtained a figure place and needed gets final product.
It also comprises a multiplexer, with under the control of this decode controller, the picture frame data that is stored in picture frame buffering area and temporary transient buffering area is respectively selected one of them and is exported it.
Because modern design of the present invention can provide on the industry and utilize, and truly have the enhancement effect, so apply for a patent in accordance with the law.
Description of drawings
For making your juror can further understand structure of the present invention, feature and purpose thereof, the attached now detailed description with graphic and preferred embodiment as after, wherein:
Fig. 1 is the hardware structure figure of decoder for high-definition static picture of the present invention.
Fig. 2 A is a huge schematic diagram for the brightness composition.
Fig. 2 B is a huge schematic diagram for the aberration composition.
Fig. 3 A is the picture frame data formats schematic diagram for the brightness composition.
Fig. 3 B is the picture frame data formats schematic diagram for the aberration composition.
Fig. 4 A shows huge row of brightness composition of being stored according to picture frame buffering area of the present invention.
Fig. 4 B shows huge row of brightness composition of storing according to temporary transient buffering area of the present invention.
Fig. 4 C shows huge row of aberration composition of being stored according to picture frame buffering area of the present invention.
Fig. 4 D shows huge row of aberration composition of storing according to temporary transient buffering area of the present invention.
Fig. 5 is the sequential of an actual example of high-res still frame of displaying the play.
Fig. 6 shows according to bit element flow decoding process of the present invention.
Fig. 7 shows that pointing to the bit element flow buffer with two locators periodically repeats reading operation to set a picture scope.
Fig. 8 is the hardware structure figure that shows known still frame decoding processing device.
Embodiment
One preferred embodiment of relevant decoder for high-definition static picture of the present invention, please be earlier with reference to Organization Chart shown in Figure 1, it mainly is by storage arrangement 11, image-decoding device 12, decode controller 13, and institute such as multiplexer 14 constitutes, wherein, this storage arrangement 11 is to be planned to comprise bit element flow buffering area 111, temporary transient buffering area 112 (TBUF) and picture frame buffering area 113 parts such as (FBUF), this bit element flow buffering area 111 is for the bit element flow data that stores from the representative video signal picture frame of Storage Media 15, and under the control of this decode controller 13, data in 12 pairs of these bit element flow buffering areas 111 of this image-decoding device is decoded, and decoded picture frame data is stored in storage arrangement 11, for exporting TV pick-up attacnment 16 to corresponding picture is shown.
Aforementioned image-decoding device 12 is in order to the bit element flow data is decoded to produce corresponding video signal picture frame, and be example with the mpeg system, its video signal picture frame is by huge many (MacroBlock, MB) form, wherein, each huge includes brightness composition and aberration composition, shown in Fig. 2 A, huge (with huge expression of Y-) corresponding to the brightness composition is made of 16 * 16 picture elements, and the value of each picture element is promptly represented a brightness value, again with reference to shown in Fig. 2 B, huge corresponding to the aberration composition is to be made of huge of a blue composition (with huge expression of Cb-) and a red composition huge (with huge expression of Cr-), in the middle of, huge of each Cb-has 8 * 8 picture elements, and the value of each picture element is promptly represented a blue color difference value, and huge of each Cr-has 8 * 8 picture elements, the value of each picture element is promptly represented a red color value, and therefore, the size of each aberration composition huge (with huge expression of CbCr-) is 8 * 16 picture elements.
And save the event of storage space for reaching, the present invention is the picture frame data of reserve part (for example half) only in the picture frame buffering area 113 of this storage arrangement 11, remaining picture frame data then is to solve immediately when showing still frame, with the picture frame size is that the QSIF form of the MPEG1 of 352 picture elements * 288 row is the example explanation, Fig. 3 A and Fig. 3 B show that respectively its brightness and aberration composition are in decoded firsthand information (promptly without benefit value between inserting), these picture frame data are formed with a huge behavior unit, wherein, include 18 huge row (numbering 0 to 17) at the brightness component portion, each huge row is constituted (that is be made of huge of 22 Y-institute) by 352 * 16 picture elements, and also including 18 huge row (numbering 0 to 17) in aberration part, each huge row is constituted (that is by huge of 22 CbCr-constitute) by the staggered picture element of 352 * 8 CbCr.
In preferred embodiment of the present invention, be that the picture frame data is only stored half in the picture frame buffering area 113 of storage arrangement 11, and please refer to shown in Fig. 4 A and the 4C, Fig. 4 A explanation the present invention is retained in huge row of even-numbered of the brightness composition of Fig. 3 A in the picture frame buffering area 113, Fig. 4 C explanation the present invention is retained in huge row of even-numbered of the aberration composition of Fig. 3 B in the picture frame buffering area 113, in addition, dynamically store the huge row that is not retained only to have a temporary transient buffering area 112 of small amount of memory again, so that with when showing still frame, immediately solve required picture frame data, and owing to be to carry out when showing to scheme a staggered mode, therefore, huge row in temporary transient buffering area 112 only needs the height (that is huge line height in the picture frame buffering area 113 half) of half, Fig. 4 B and Fig. 4 D promptly represent brightness composition in the temporary transient buffering area 112 and huge row of aberration composition respectively, this temporary transient buffering area 112 need comprise the storage space of huge row of at least one brightness composition and huge row of at least one aberration composition, in this embodiment, this temporary transient buffering area 112 is the storage space that comprise huge row of four brightness compositions and huge row of four aberration compositions.
The display the play sequential of an actual example of high-res still frame of Fig. 5, each square wherein is the figure field of representing a picture frame, Tn represents the demonstration time of the Shang Tuchang (Top Field) of n picture frame, Bn then represents the demonstration time of figure below field (Bottom Field) of n picture frame, suppose in figure field 51, switch during 52 and 53 zones to play still frame, then according to design of the present invention, in figure field 51,52 and 53 time point, be will be from the bit element flow structure of a picture frame of bit element flow buffering area 111, with bit element flow decoding process shown in Figure 6, in the figure field time of Shang Tuchang, carry out the decoding first time (representing) with dotted arrow via image-decoding device 12, with only huge row decoding of dual numbers numbering, and with the picture frame data storage that solves in picture frame buffering area 113, and in the middle of the figure field time in all the other figure fields of Fig. 5, also as shown in Figure 6, bit element flow structure from a picture frame of bit element flow buffering area 111 is carried out secondary decoding (representing with solid arrow), with huge row decoding to odd-numbered, and as long as in the time that shows one huge capable data, with the required corresponding picture frame data in figure place at that time that is stored in the storage arrangement 11, solve and be positioned over temporary transient buffering area 112 according to decoding for the second time, can be for immediately showing that still frame is required, that is, the aforementioned data that is stored in picture frame buffering area 113 and temporary transient buffering area 112 through decoding respectively is under the control of decode controller 13, by multiplexer 14 select wherein one and export TV decoder 16 to, for corresponding still frame is shown on the television indicator 17.
The aforementioned huge row that remaines in picture frame buffering area 113 is to store in the mode of jumping over a huge row, right its also can be adopted the mode of jumping over a plurality of huge row, or the irregular mode of jumping over huge row implements the present invention, and its principle and previous embodiment are suitable, so repeat no more.
In addition as shown in Figure 5, switch the figure field of the figure field of playing still frame in the demonstration time at non-genus, secondary decoding is repeatedly to carry out, therefore, when bit element flow buffering area 111 reads the bit element flow data, as shown in Figure 7, be preferably to point to the beginning that n opens picture in the bit element flow data with a locator Pn, and with a locator P
N+1Point to the beginning that n+1 opens picture in the bit element flow data, in view of the above, reading just of bit element flow data can be according to the needs of Fig. 5 periodically repeats reading operation between this two locator picture scope pointed.
Fig. 1 also shows that this image-decoding device 12 is to include variation length decoder 121, carry out length decoder 122, inverse DCT 123, anti-discrete cosine converting unit 124 and direct current fallout predictor 125 etc., and it is known by aforesaid explanation, the bit element flow data is to read and write bit element flow data buffering area 111 by Storage Media 15, afterwards, decode controller 13 is according to as the represented mode of Fig. 7 the bit element flow data being read in variation length decoder 121, with in regular turn by carrying out length decoder 122, inverse DCT 123, anti-discrete cosine converting unit 124 cell processing are to decode, wherein, because of decoding process of the present invention is that as shown in Figure 6 mode is carried out to jump huge row, so variation length decoder 121 need have the ability to abandon unwanted huge row, only the fragment (Slice) because of defined in the MPEG1 standard is to stride across huge row, therefore, in the present invention, bit element flow data of handling through variation length decoder 121 and the value that keeps its direct current composition via direct current fallout predictor 125, and if what separated is the bit element flow data of MPEG2, then but this direct current fallout predictor 125 Jing give and closing, and so the data in decoding process is the pattern of jumping huge.
By the data behind 124 output decoders of anti-discrete cosine converting unit, then under the control of decode controller 13, store picture frame buffering area 113 or temporary transient buffering area 112 to storage arrangement 11, and when storing to picture frame buffering area 113, be to store whole huge data, putting back discrete cosine transform unit 124 is that the data that inverse DCT 123 is brought is intactly stored to picture frame buffering area 113 through after the computing, and for storing to the data of temporary transient buffering area 112, the data that then only needing computing to obtain a figure place needs gets final product.
By above explanation as can be known, the present invention utilizes distinctive picture frame data management mode, can only store the data of about half picture frame, add the suitable management of bit element flow buffering area and huge processing mode of jumping of variation length decoder, can solve still frame with limited storage space effectively, and the video signal quality of output also can be kept good quality on resolution, and the operating frequency of its decoding framework also need not increase.
To sum up institute is old, and no matter the present invention is all showing it totally different in the feature of known techniques with regard to purpose, means and effect, for the quantum jump that video decoded device is made, earnestly asks your juror to perceive, and grants quasi patent early, so that Jiahui society, the true feeling moral just.Only it should be noted that above-mentioned many embodiment give an example for convenience of explanation, the interest field that the present invention advocated should be as the criterion so that claim is described certainly, but not only limits to the foregoing description.
Claims (13)
1. a decoder for high-definition static picture is characterized in that, mainly comprises:
One storage arrangement includes bit element flow buffering area, temporary transient buffering area and picture frame buffering area, and this bit element flow buffering area is to store the bit element flow data that has from a Storage Media; And
One decoding device, bit element flow data in this bit element flow buffering area is decoded, and decoded picture frame data stored to this picture frame buffering area or this temporary transient buffering area, with when desire shows still frame, this picture frame buffering area is only stored the part picture frame data corresponding to this picture, for output, remaining picture frame data then is when showing still frame, immediately solve and be stored in this temporary transient buffering area, so that with output and cooperate the output of this picture frame buffering area and show the still frame of a high-res.
2. decoder for high-definition static picture according to claim 1, it is characterized in that, wherein the picture frame buffering area is only stored half the picture frame data corresponding to this picture, this temporary transient buffering area is that having than this picture frame buffering area is little storage space, for storing the picture frame data that solves immediately.
3. decoder for high-definition static picture according to claim 1 is characterized in that, is represented with a plurality of huge row after wherein the picture frame data in this bit element flow buffering area solves via this decoding device.
4. decoder for high-definition static picture according to claim 3, it is characterized in that, wherein this picture frame buffering area is only stored the huge row of part corresponding to the picture frame data of this picture, and this temporary transient buffering area is the storage space with at least one huge row.
5. decoder for high-definition static picture according to claim 4 is characterized in that, wherein this picture frame buffering area is huge row of even number of only storing in the mode of striding a huge row corresponding to the picture frame data of this picture.
6. decoder for high-definition static picture according to claim 5 is characterized in that, wherein the height of huge row of this temporary transient buffering area is half of huge row of this picture frame buffering area.
7. decoder for high-definition static picture according to claim 5, it is characterized in that, wherein in the figure field of when showing still frame, being play, at the time point that switches the figure field of playing still frame, be in the figure field time of Shang Tuchang, to carry out the decoding first time from the bit element flow of a picture frame of bit element flow buffering area via the image-decoding device, with only huge row decoding of dual numbers, and the result that will solve is stored in the picture frame buffering area, and a figure field time in remaining figure field, be that the bit element flow from a picture frame of bit element flow buffering area is carried out secondary decoding, with huge row decoding to odd number.
8. decoder for high-definition static picture according to claim 7, it is characterized in that, wherein this secondary decoding is repeatedly to carry out, and when the bit element flow buffering area reads data, is to set a picture scope for periodically repeating reading operation with two locators.
9. decoder for high-definition static picture according to claim 8, it is characterized in that, wherein this image-decoding device is to include the variation length decoder, carry out length decoder, inverse DCT and anti-discrete cosine converting unit, and the data of this bit element flow data buffering area is to be read into this variation length decoder, to carry out length decoder by this in regular turn, inverse DCT and anti-discrete cosine converting unit are handled and are decoded, and by this anti-discrete cosine converting unit the data that solves are stored picture frame buffering area or temporary transient buffering area to this storage arrangement.
10. decoder for high-definition static picture according to claim 9 is characterized in that, wherein this variation length decoder is to have the ability to abandon unwanted huge ability, so that decode in the mode of jumping huge row.
11. decoder for high-definition static picture according to claim 9 is characterized in that, wherein this image-decoding device also includes a direct current fallout predictor, so that to keep the direct current composition of the bit element flow data of handling through this variation length decoder.
12. decoder for high-definition static picture according to claim 9 is characterized in that, wherein this anti-discrete cosine converting unit is for the data that will store to this temporary transient buffering area, is that the data that a computing is obtained a figure place and needed gets final product.
13. decoder for high-definition static picture according to claim 1, it is characterized in that, it also comprises a multiplexer, with under the control of this decode controller, the picture frame data that is stored in picture frame buffering area and temporary transient buffering area is respectively selected one of them and is exported it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001210742A CN1138415C (en) | 2000-07-17 | 2000-07-17 | Decoder for high-definition static picture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001210742A CN1138415C (en) | 2000-07-17 | 2000-07-17 | Decoder for high-definition static picture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1334676A CN1334676A (en) | 2002-02-06 |
| CN1138415C true CN1138415C (en) | 2004-02-11 |
Family
ID=4588572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001210742A Expired - Fee Related CN1138415C (en) | 2000-07-17 | 2000-07-17 | Decoder for high-definition static picture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1138415C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7688896B2 (en) | 2005-01-31 | 2010-03-30 | Sunplus Technology Co., Ltd | Method and apparatus for decoding compressed video image data |
-
2000
- 2000-07-17 CN CNB001210742A patent/CN1138415C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7688896B2 (en) | 2005-01-31 | 2010-03-30 | Sunplus Technology Co., Ltd | Method and apparatus for decoding compressed video image data |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1334676A (en) | 2002-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7684491B2 (en) | Reference data buffer for intra-prediction of digital video | |
| KR100604102B1 (en) | Methods and apparatus for processing DVD video | |
| US6088047A (en) | Motion compensated digital video decoding with buffered picture storage memory map | |
| US7292772B2 (en) | Method and apparatus for decoding and recording medium for a coded video stream | |
| EP0828238A2 (en) | Image memory storage system and method for a block oriented image processing system | |
| JPH10224805A (en) | Method and device for storing decoded video information | |
| US6215822B1 (en) | Motion compensated digital video decoding and buffer memory addressing therefor | |
| CN101212674B (en) | Image address mapping method in memory | |
| CN1164078C (en) | Character frame method for 16 : 9 aspect ratio transformation of MPEG image | |
| CN1302512A (en) | Variable length decoder for decoding digitally encoded video signals | |
| RU2160969C2 (en) | Decoder of movable image and process recording group of data of videosignal in synchronous dynamic device | |
| JP2007525906A (en) | Stereo 3D video image digital coding system and method | |
| JP2008061156A (en) | Motion picture processing apparatus | |
| EP1245119B1 (en) | Method and apparatus for video decoding on a multiprocessor system | |
| US8666160B2 (en) | Method and apparatus for DRAM 2D video word formatting | |
| CN101031052A (en) | Method for mapping image address in memory | |
| US6205181B1 (en) | Interleaved strip data storage system for video processing | |
| US6924809B2 (en) | Method and buffer device for data stream transformation | |
| CN1138415C (en) | Decoder for high-definition static picture | |
| US6456746B2 (en) | Method of memory utilization in a predictive video decoder | |
| US7068847B1 (en) | High-resolution still picture decoding device | |
| US7050494B1 (en) | Frame display method and apparatus using single field data | |
| US7848432B2 (en) | System and method for efficiently storing macroblocks in SD-RAM | |
| US20060153303A1 (en) | Apparatus and method for video decoding | |
| TW475331B (en) | Decoding processing device for high resolution still picture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040211 Termination date: 20140717 |
|
| EXPY | Termination of patent right or utility model |