CN107659814A - Entropy decoding structure in a kind of bimodulus decoder of AVS and MPEG 2 - Google Patents
Entropy decoding structure in a kind of bimodulus decoder of AVS and MPEG 2 Download PDFInfo
- Publication number
- CN107659814A CN107659814A CN201710858088.4A CN201710858088A CN107659814A CN 107659814 A CN107659814 A CN 107659814A CN 201710858088 A CN201710858088 A CN 201710858088A CN 107659814 A CN107659814 A CN 107659814A
- Authority
- CN
- China
- Prior art keywords
- module
- avs
- mpeg
- table look
- entropy decoding
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
- H04N19/124—Quantisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
- H04N19/13—Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/1887—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a variable length codeword
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
- H04N19/91—Entropy coding, e.g. variable length coding [VLC] or arithmetic coding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
- H04N19/93—Run-length coding
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
The present invention relates to entropy decoding structure in a kind of AVS and the bimodulus decoders of MPEG 2, including entropy decoding control circuit, code word size maker and multistage table look-up module；Multistage table look-up module includes one-level table look-up module and two level table look-up module, decoding operate is decomposed into Part I and Part II by one-level table look-up module and two level table look-up module, and one-level table look-up module and two level table look-up module perform the Part I and Part II of the adjacent operation of entropy decoding twice respectively in same period；Decoded information is sent to code word size maker and two level table look-up module by one-level table look-up module, and two level table look-up module exports after calculating run value and quantized value.By using two stage pipeline structures while the compatible AVS of the present invention and the dual mode datas of MPEG 2 decode, channel frequency is greatly improved.And by using code word size maker, code word size is fed back into decoding control circuit, ensure that decoding efficiency, a cycle can decode a code word.
Description
Technical field
The present invention relates to multimedia video technique field, entropy solution in more particularly to a kind of AVS and MPEG-2 bimodulus decoder
Code structure.
Background technology
AVS（Audio Video Coding Standard）Standard is《Information technology advanced audio/video encodes》Series mark
Accurate abbreviation, suitable for digital television broadcasting, interactive storage media, direct broadcasting satellite video traffic, multimedia mail, packet net
The features such as multimedia service of network etc. is applied, and is had compression ratio height, is put moderate complexity, and patent cost is cheap.
Using static Huffman tables to carry out from standards such as MPEG-2, MPEG4, entropy code is different, and AVS video standards employ
Dynamic self-adapting entropy coding method reaches more preferable compression efficiency, adaptive entropy coding can be adaptive selected best suit it is dynamic
The code table of state probability statistics rule maps syntactic element, is exported after carrying out Exp- Golomb coding to syntactic element.It is adaptive
Compression efficiency should be increased, but also considerably increases operand and realizes difficulty.
In the prior art, entropy decoding needs to carry out substantial amounts of table lookup operations in a cycle, result in entropy decoding circuit
Critical path is long, and frequency is difficult to improve, and constrains performance and further improves.
Decoding apparatus of the prior art is generally only single mode decoding simultaneously, it is impossible to compatible a variety of different standards, such as
AVS standards and Moving Picture Experts Group-2, because the entropy decoding process difference of AVS and MPEG-2 standards is larger, how to realize fine grained
Multiplexing and the difficult point of research.
The content of the invention
In order to solve the above technical problems, The present invention provides with entropy solution in a kind of AVS and MPEG-2 bimodulus decoder
Code structure.
Entropy decoding structure in a kind of AVS and MPEG-2 bimodulus decoder, including the generation of entropy decoding control circuit, code word size
Device and multistage table look-up module；
The entropy decoding control circuit is used to obtain entropy decoding data and bit stream, and entropy decoding data and bit data are divided
The multistage table look-up module and code word size maker are not sent to；
The code word size maker is used to calculate code word size and feeds back to the entropy decoding control circuit；
The multistage table look-up module includes one-level table look-up module and two level table look-up module, the one-level table look-up module and described second
Decoding operate is decomposed into Part I and Part II by table look-up module, and first table look-up module and two level are looked into same period
Table module performs the Part I and Part II of the adjacent operation of entropy decoding twice respectively；After the one-level table look-up module will decode
Information be sent to the code word size maker and the two level table look-up module, the two level table look-up module calculates the distance of swimming
Exported after value and quantized value.
Further, the entropy decoding data include AVS variable length codes or MPEG-2 variable length codes.
Further, the one-level table look-up module calculates language according to Columbus's code prefix in AVS variable length codes and suffix information
Method element, institute's syntax elements are sent to the two level table look-up module.The two level table look-up module is according to institute's syntax elements
Lookup table index is calculated, and tables look-up to obtain the final run value of variable length code and quantized value.
In addition, -2 elongated code type of one-level table look-up module analysis of MPEG, the elongated code types of the MPEG-2 are sent
To the two level table look-up module.The two level table look-up module completes decoding of tabling look-up according to MPEG-2 variable length code type codings type.
Further, in terms of code word size maker, the code word size maker includes AVS code word sizes generation mould
Block and MPEG-2 code word size generation modules；The AVS code word sizes generation module includes being used to calculate prefix length and rank
Secondary AVS Columbus's code prefix order computing modules and the AVS code words that word length is calculated according to prefix length and order
Length computation module.The MPEG-2 code word sizes generation module is sent out according to the bit data and the one-level table look-up module
The MPEG-2 character codes type gone out calculates MPEG-2 code word sizes.
The beneficial effect played of the present invention includes：
A kind of 1. entropy decoding structure for supporting AVS and Moving Picture Experts Group-2 of offer of the present invention, by using two level production line knots
Structure, greatly improve channel frequency.
2. by using code word size maker, code word size is fed back into decoding control circuit, ensure that decoding effect
Rate, a cycle can decode a code word.
Brief description of the drawings
Fig. 1 is the entropy decoding Organization Chart in the embodiment of the present invention 1.
Fig. 2 is the code word size maker Organization Chart in the embodiment of the present invention 1.
Fig. 3 is the one-level table look-up module Organization Chart in the embodiment of the present invention 2
Fig. 4 is the two level table look-up module Organization Chart in the embodiment of the present invention 2.
Wherein, entropy decoding control circuit 101；Code word size maker 102；One-level table look-up module 103；Two level table look-up module
104；AVS code word sizes generation module 210；AVS Columbus's code prefix orders computing module 211；AVS code word size computing modules
212；MPEG-2 code word sizes generation module 220；AVS prefixs of code word counting circuit 301；AVS code word suffix counting circuit 302；
AVS syntactic elements counting circuit 303；MPEG-2 code-word types decision circuit 304；AVS lookup table index generative circuit 401；AVS is looked into
Watch circuit 402；MPEG-2 lookup table circuits 403.
Embodiment
Presently preferred embodiments of the present invention is described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention are more
Easily it is readily appreciated by one skilled in the art, so as to make apparent define to protection scope of the present invention.
Embodiment 1：
The present invention using two-stage look-up table structure, and adopts in this support AVS and Moving Picture Experts Group-2 of offer entropy decoding structure
With code word size maker, the decoding of a code word is completed in a cycle, there is preferable performance, shorter delay, compared with
High frequency.
AVS entropy decodings algorithm and MPEG-2 entropy decoding algorithm are simply introduced first.
Wherein, AVS entropy decodings algorithm is divided into five steps：（1）K ranks Exp- Golomb decodes；（2）Syntactic element
Trans_coefficient is parsed；（3）Calculating tables look-up to obtain Level and Run；（4）AbsLevel is calculated, updates current code table
With k values；（5）Output.
And MPEG-2 entropy decodings process is mainly realized by tabling look-up, using 2 code tables, the selection of code table is by signal intra_
Vlc_format and macroblock_intra determines that elongated code type is divided into internal block DC coefficients, positive constant coefficient, escape coding
Coefficient, non-first coefficient of internal block and block end coefficient.DC Coefficient decodings are by parameter dct_dc_size and dc_dct_
Differential determines that it is added to obtain DC coefficients by the predicted value being calculated in parameter QFS, QFS and DC fallout predictor；
The bit sign position coding of positive constant coefficient by variable length code and thereafter forms, if sign bit is 0, just, otherwise level values are
It is negative；Escape coefficient is made up of the special string of 18 bits of regular length, and 6 bits of beginning represent run, and remaining 12 bit represents
Level value.
In the present embodiment, the hardware design of entropy decoding structure is as shown in Figure 1.Including entropy decoding control circuit 101, code word
Length maker 102 and multistage table look-up module；Wherein, multistage table look-up module includes one-level table look-up module 103 in the present embodiment
And two level table look-up module 104.
Specifically, entropy decoding control circuit 101 receives entropy decoding data and bit stream, and start decoding.
Code word size maker 102 receives compressed bit stream, calculates code word size and feeds back to control circuit 101, so as to carry
High decoding efficiency.
One-level table look-up module 103 and two level table look-up module 104 are used to decoding operate, but it is each responsible for completely decoding
A part in operation, i.e., both decoding operate is decomposed into Part I and Part II.One-level table look-up module 103 and two level
Table look-up module 104 does a decoding operate in same period, and the upstream and downstream in the matching relationship such as streamline of both is closed
System.That is, from independent one group of decoded information, within the period 1, one part decoding operate is in one-level table look-up module 103
Carry out, it is remaining to be completed in second round in two level table look-up module 104 so that it is finally completed the entropy of this group of decoded information
Decoding operate.If when multigroup continuous entropy decoding data needed processing, one-level table look-up module 103 and two level table look-up module
104 Part I and Part II for performing the operation of adjacent entropy decoding twice respectively, finally realize that each cycle can be with
The result after an entropy decoding is exported, that is, completes an entropy decoding operation.
In terms of entropy decoding data, it includes one kind in AVS variable length codes and MPEG-2 variable length codes, one-level table look-up module
103 identify and one-level is carried out after entropy decoding data table look-up decoding, by decoded information be sent to code word size maker and
Two level table look-up module 104.When entropy decoding data are AVS data, one-level table look-up module 103 calculates AVS Columbus's codes grammer member
Element, and two level table look-up module 104 is output to, when entropy decoding data are MPEG-2 data, one-level table look-up module 103 then calculates
MPEG-2 code-word types, and export to two level table look-up module 104.
Meanwhile decoded information is also sent to the code word size maker by one-level table look-up module 103, for calculating
The code word size of variable length code.
The AVS syntactic elements or MPEG-2 code that two level table look-up module 104 sends over according to one-level table look-up module 103
Word type computation of table lookup obtains quantized value and run value, and exports to entropy decoding output unit 105.
In terms of code word size maker, the code word size maker of the present embodiment including AVS code words as shown in Fig. 2 grow
Spend generation module 210 and MPEG-2 code word sizes generation module 220.AVS code word sizes generation module 210 is included before being used to calculate
Sew AVS Columbus's code prefix orders computing module 211 of length and order and word is calculated according to prefix length and order
The AVS code word sizes computing module 212 of code length.
Its workflow is as follows：AVS Columbus's code prefix orders computing module 211 analyzes AVS bit streams, obtains Columbus
Code prefix and order information, and AVS code word sizes computing module 212 is output to, AVS code word sizes computing module 212 is before
The length sewed and the order k of Columbus's code, calculate the length information of AVS Columbus's codes, and are output to entropy decoding control circuit
101；MPEG-2 code word sizes generation module 220, according to MPEG-2 bit streams, and the MPEG-2 that one-level table look-up module 103 exports
Code-word type information, table look-up to obtain MPEG-2 code word sizes, and be output to entropy decoding control circuit 101.
Embodiment 2：
As the further optimization of embodiment 1, the present embodiment and the difference of embodiment 1 are that the present embodiment is specifically retouched multistage and looked into
The process of tabling look-up of table module：
In terms of one-level table look-up module, one-level table look-up module is as shown in figure 3, its AVS prefix of code word for including being sequentially connected with calculates electricity
Road 301, AVS code word suffix counting circuit 302 and AVS syntactic elements counting circuit 303, additionally include for handling
The MPEG-2 code-word types decision circuit 304 of MPEG-2 bit streams.Wherein, when it is AVS bit streams to receive bit stream, AVS
Prefix of code word counting circuit 301 receives bit stream, calculates AVS Columbus's code prefix lengths, and is output to the calculating of AVS code words suffix
In circuit 302, AVS code word suffix counting circuit 302 calculates Columbus's code suffix lengths, and is output to the calculating of AVS syntactic elements
Circuit 303, AVS syntactic elements counting circuit 303 are output in two level table look-up module 104 after calculating AVS syntactic elements.And work as
When to receive bit stream be MPEG-2 bit streams, MPEG-2 code-word types decision circuit 304 judges code word according to MPEG-2 code streams
Type, and be output in two level table look-up module 104.
The aspect of two level table look-up module 104, two level table look-up module 104 is as shown in figure 4, be equally to include being used to handle AVS numbers
According to AVS lookup table index generative circuit 401, AVS lookup table circuits 402 and table look-up electricity for handling the MPEG-2 of MPEG-2 data
Road 403.Wherein AVS lookup table index generative circuit 401 and AVS lookup table circuits 402 are sequentially connected with.When receiving one-level table look-up module
During the data sended over, AVS lookup table index generative circuit 401 produces lookup table index simultaneously according to AVS Columbus's codes syntactic element
Run value and quantized value is calculated according to lookup table index in output, AVS lookup table circuits 402.MPEG-2 lookup table circuits 403 are according to code
Code table corresponding to word type search, obtains run value and quantized value.
Embodiment 3：
As embodiment 1 or the supplement of embodiment 2, the present embodiment and the difference of embodiment 1 or 2 are, the present embodiment provides
A kind of specific Columbus's entropy decoding algorithm：
（1）K ranks Exp- Golomb decodes.K rank Columbus's codes are a kind of structure code words, and a series of ' 0 ' is embroidered with before code word
With one ' 1 ' composition, the number of continuous zero bit can be designated as leadingZeroBits, suffix contains actual grammer
Elements C odeNum information, length are leadingZero-Bits+k bits, parse the process false code of k rank Columbus's codes
It is described as follows：
leadingzerobits=-1
for（b=0；!b；leadingzerobits++）
b=read_bits（1）
CodeNum=2leadingzerobits-2k+read_bits
（leadingzerobits+k）
length=2*leadingzerobits+k+1
（2）Syntactic element trans_coefficient is parsed.Syntactic element trans_coefficient is equal to CodeNum, such as
Fruit trans_coef-ficient is more than or equal to 59 and decodes to obtain grammer, it is necessary to carry out next Columbus's code to bit stream
Element escape_level_diff, its order are determined by following rule：The escape_level_ of intraframe coding luminance factor
Diff uses 1 rank Exp- Golomb, and escape_level_diff uses 0 rank Exp- Golomb in the case of other.
（3）Calculating tables look-up to obtain Level and Run.AVS uses 19 code tables, for the quantization parameter that is not present in table and
The distance of swimming combines, using 2 continuous Columbus's codes come combined coding, in this case, the syntactic element of first Columbus's code
Trans_coefficient is more than or equal to 59, and parameter RefAbsLevel, second brother are obtained for calculating Run and looking into code table
The syntactic element of human relations cloth code is escape_level_diff, for Level is calculated together with RefAbsLevel.
（4）AbsLevel is calculated, updates current code table and k value.If decoded quantized absolute coefficient has been more than current block
Maximum in decoded quantized absolute coefficient, and need to be updated current code table according to rule.
（5）Permutatation exports.It is different using Zig-Zag scanning sequencies from MPEG-2 entropy codes, AVS entropy code sequentially with
Zig-Zag scanning sequencies are opposite.What is first encoded is the quantization parameter and run value of high frequency transform coefficients, and what is encoded afterwards is that low frequency becomes
Change the quantization parameter and run value of coefficient.Therefore entropy decoding needs the Level and Run that scratch pad block decodes, then after opposite direction sequence
Output.
Embodiments of the present invention are explained in detail above in conjunction with accompanying drawing, but the present invention is not limited to above-mentioned implementation
Mode, can also be on the premise of present inventive concept not be departed from those of ordinary skill in the art's possessed knowledge
Various changes can be made.
Claims (10)
1. entropy decoding structure in a kind of AVS and MPEG-2 bimodulus decoder, it is characterised in that including entropy decoding control circuit, code
Word length maker and multistage table look-up module；
The entropy decoding control circuit is used to obtain entropy decoding data and bit stream, and entropy decoding data and bit data are divided
The multistage table look-up module and code word size maker are not sent to；
The code word size maker is used to calculate code word size and feeds back to the entropy decoding control circuit；
The multistage table look-up module includes one-level table look-up module and two level table look-up module, the one-level table look-up module and the two level
Decoding operate is decomposed into Part I and Part II by table look-up module, and the one-level table look-up module and two level are looked into same period
Table module performs the Part I and Part II of the adjacent operation of entropy decoding twice respectively；After the one-level table look-up module will decode
Information be sent to the code word size maker and the two level table look-up module, the two level table look-up module calculates the distance of swimming
Exported after value and quantized value.
2. entropy decoding structure in AVS and MPEG-2 bimodulus decoder according to claim 1, it is characterised in that the entropy
Decoding data includes AVS variable length codes or MPEG-2 variable length codes.
3. entropy decoding structure in AVS and MPEG-2 bimodulus decoder according to claim 2, it is characterised in that described one
Level table look-up module sends out institute's syntax elements according to Columbus's code prefix in AVS variable length codes and suffix information calculation syntax element
It is sent to the two level table look-up module.
4. entropy decoding structure in AVS the and MPEG-2 bimodulus decoders according to Claims 2 or 3, it is characterised in that described
- 2 elongated code type of one-level table look-up module analysis of MPEG, the elongated code types of the MPEG-2 are sent to the two level and tabled look-up mould
Block.
5. entropy decoding structure in AVS and MPEG-2 bimodulus decoder according to claim 3, it is characterised in that described two
Level table look-up module calculates lookup table index according to institute's syntax elements, and tables look-up to obtain the final run value of variable length code and quantized value.
6. entropy decoding structure in AVS and MPEG-2 bimodulus decoder according to claim 4, it is characterised in that described two
Level table look-up module completes decoding of tabling look-up according to MPEG-2 variable length code type codings type.
7. entropy decoding structure in AVS and MPEG-2 bimodulus decoder according to claim 1, it is characterised in that the code
Word length maker includes AVS code word sizes generation module and MPEG-2 code word size generation modules；The AVS code word sizes life
Into module including being used to calculate AVS Columbus's code prefix order computing modules of prefix length and order and being grown according to prefix
Degree and order calculate the AVS code word size computing modules of word length.
8. entropy decoding structure in AVS and MPEG-2 bimodulus decoder according to claim 5, it is characterised in that described
The MPEG-2 character code classes that MPEG-2 code word sizes generation module is sent according to the bit data and the one-level table look-up module
Type calculates MPEG-2 code word sizes.
9. entropy decoding structure in AVS and MPEG-2 bimodulus decoder according to claim 1, it is characterised in that described one
Level table look-up module includes AVS prefixs of code word counting circuit, AVS code word suffix counting circuit, the AVS syntactic element meters being sequentially connected with
Circuit is calculated, and for handling the MPEG-2 code-word type decision circuits of MPEG-2 bit streams.
10. entropy decoding structure in AVS and MPEG-2 bimodulus decoder according to claim 1, it is characterised in that described two
Level table look-up module is including the AVS lookup table index generative circuit for handling AVS data, AVS lookup table circuits and for handling
The MPEG-2 lookup table circuits of MPEG-2 data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710858088.4A CN107659814A (en) | 2017-09-21 | 2017-09-21 | Entropy decoding structure in a kind of bimodulus decoder of AVS and MPEG 2 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710858088.4A CN107659814A (en) | 2017-09-21 | 2017-09-21 | Entropy decoding structure in a kind of bimodulus decoder of AVS and MPEG 2 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107659814A true CN107659814A (en) | 2018-02-02 |
Family
ID=61130871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710858088.4A Pending CN107659814A (en) | 2017-09-21 | 2017-09-21 | Entropy decoding structure in a kind of bimodulus decoder of AVS and MPEG 2 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107659814A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101646073A (en) * | 2008-08-08 | 2010-02-10 | 青岛海信信芯科技有限公司 | Method for decoding videos and television using same |
| US20100127904A1 (en) * | 2008-11-26 | 2010-05-27 | Horizon Semiconductors Ltd. | Implementation of a rapid arithmetic binary decoding system of a suffix length |
| CN103108176A (en) * | 2011-11-09 | 2013-05-15 | 深圳市德赛微电子技术有限公司 | Entropy decoding structure in audio video coding standard (AVS) and moving picture experts group-2 (MPEG-2) two-mode decoder |
| CN103430548A (en) * | 2011-03-09 | 2013-12-04 | 松下电器产业株式会社 | Video image encoding device and video image encoding method |
| CN105025296A (en) * | 2014-04-30 | 2015-11-04 | 北京大学 | Advance arithmetic coder and realization method thereof |
-
2017
- 2017-09-21 CN CN201710858088.4A patent/CN107659814A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101646073A (en) * | 2008-08-08 | 2010-02-10 | 青岛海信信芯科技有限公司 | Method for decoding videos and television using same |
| US20100127904A1 (en) * | 2008-11-26 | 2010-05-27 | Horizon Semiconductors Ltd. | Implementation of a rapid arithmetic binary decoding system of a suffix length |
| CN103430548A (en) * | 2011-03-09 | 2013-12-04 | 松下电器产业株式会社 | Video image encoding device and video image encoding method |
| CN103108176A (en) * | 2011-11-09 | 2013-05-15 | 深圳市德赛微电子技术有限公司 | Entropy decoding structure in audio video coding standard (AVS) and moving picture experts group-2 (MPEG-2) two-mode decoder |
| CN105025296A (en) * | 2014-04-30 | 2015-11-04 | 北京大学 | Advance arithmetic coder and realization method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8294603B2 (en) | System and method for providing high throughput entropy coding using syntax element partitioning | |
| US7839311B2 (en) | Architecture for multi-stage decoding of a CABAC bitstream | |
| JP4981927B2 (en) | CAVLC extensions for SVCCGS enhancement layer coding | |
| US20080246637A1 (en) | Cabac Decoding Method | |
| US20100141489A1 (en) | Fast parsing of variable-to-fixed-length codes | |
| CN101529919A (en) | Apparatus and method of reduced reference frame search in video encoding | |
| WO2014092867A1 (en) | Adaptive selection between lossless and lossy image compression | |
| US7830964B2 (en) | Method and/or apparatus for parsing compressed video bitstreams | |
| US20060233262A1 (en) | Signaling of bit stream ordering in scalable video coding | |
| US20140269896A1 (en) | Multi-Frame Compression | |
| US7439886B2 (en) | Variable-length decoder, video decoder and image display system having the same, and variable-length decoding method | |
| CN107659814A (en) | Entropy decoding structure in a kind of bimodulus decoder of AVS and MPEG 2 | |
| Qi et al. | Research on CAVLC audio-video synchronization coding approach based on H. 264 | |
| TWI289023B (en) | A method of MPEG-2 video variable length decoding in software | |
| US8421655B2 (en) | Apparatus for parallel entropy encoding and decoding | |
| Qi et al. | A CAVLC embedded method for Audio-Video Synchronization Coding based on H. 264 | |
| CN103596012A (en) | Interframe macro block type selecting method used in real-time AVS-based video frame rate transcoding | |
| KR20060027831A (en) | Method of encoding a signal into a bit stream | |
| EP4354861A1 (en) | Video decoding and coding method, device and storage medium | |
| CN109218725A (en) | A kind of video encoder, Video Decoder and processing system for video | |
| Liu et al. | VLD Design for AVS Video Decoder | |
| Liu et al. | VLD design for AVS and H. 264 dual standards video decoder | |
| GB2410643A (en) | Motion vector labelling in frequency of occurrence and run length encoding of labels |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180202 |
|
| RJ01 | Rejection of invention patent application after publication |