WO2005088840A1 - 可変長符号復号装置 - Google Patents
可変長符号復号装置 Download PDFInfo
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- WO2005088840A1 WO2005088840A1 PCT/JP2005/004863 JP2005004863W WO2005088840A1 WO 2005088840 A1 WO2005088840 A1 WO 2005088840A1 JP 2005004863 W JP2005004863 W JP 2005004863W WO 2005088840 A1 WO2005088840 A1 WO 2005088840A1
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
-
- 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
- H04N19/12—Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
-
- 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
- H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
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- 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
Definitions
- the present invention relates to a method for decoding a bit stream encoded by a plurality of code schemes.
- the present invention relates to a variable-length code decoding device.
- MPEG Motion Picture Coding Ex perts Group
- MPEG includes MPEG-1 for storage media such as CD-ROM
- MPEG_2 for storage media such as digital TV broadcasts and DVDs
- low bit rates such as mobile communications.
- MPEG_4 used as a moving image format
- MPEG-4 AVC Ad Advanced Video Coding
- the dedicated video processing LSI mounted on the mobile communication terminal consists of a processor, VLD (Variab 1 e Length Decoder, variable length code decoding circuit), IQ (Inverse Quantization, inverse quantum Circuit), and dedicated hardware such as I DCT (Inverse DCT Transform, Inverse DCT circuit), which distributes the load of moving image processing and also consumes The power is being reduced.
- VLD Very Low Density Decoder
- IQ Inverse Quantization, inverse quantum Circuit
- dedicated hardware such as I DCT (Inverse DCT Transform, Inverse DCT circuit)
- incorporating multiple dedicated video processing LSIs into an image processing device increases the number of components, which increases the cost of the image processing device, and switches the dedicated video processing LSI to operate for each encoding method.
- the necessity complicates the system. Therefore, it is conceivable that one LSI dedicated to moving image processing can support a plurality of encoding schemes. This can be achieved by providing all dedicated hardware such as VLDs for each encoding method.
- the area of the LSI dedicated to moving image processing increases, and the cost of the LSI dedicated to moving image processing increases.
- Literature 1 Japanese Patent Application Laid-Open No. 2002-1418057 discloses a technique of a variable-length code decoding circuit corresponding to two encoding schemes.
- FIG. 7 shows a conventional variable-length code decoding circuit 300 described in Document 1.
- the variable length code decoding circuit 300 can process a barrel shifter 301 and a barrel shifter controller 302, a variable length code decoding table 303a for decoding AC coefficients of DV format and MPEG format, and a run length of level 0. It includes a run-length decoder 304, an escape processing circuit 303b dedicated to MPEG format, a DC processing circuit 303c for each format, and an EOB processing circuit 303d for both formats.
- an object of the present invention is to provide a variable-length code decoding device that can easily cope with a plurality of coding schemes and can suppress an increase in circuit scale. Disclosure of the invention
- a variable length decoding device includes: a decoding stage for decoding a variable length code encoded by a plurality of encoding schemes; a stream input unit for inputting the variable length code; a decoding stage and a stream input unit.
- the stream input unit and the interface are shared for a plurality of encoding systems. In this configuration, since the stream input unit and the interface are shared by a plurality of encoding systems, the circuit scale can be reduced as compared with a case where a stream input unit is provided for each encoding system.
- the decoding stage includes a logic circuit that can be reconfigured so as to be able to decode the variable length code encoded by each of the plurality of encoding schemes. Be composed.
- the decoding stage can be, for example, a single reconfigurable logic circuit. Therefore, the circuit scale can be further reduced.
- the decoding stage includes a plurality of decoders for decoding variable length codes encoded by a plurality of encoding schemes.
- multiple dedicated decoding can be performed without the overhead required for reconstruction. Can cope with a plurality of encoding schemes.
- variable length decoding device in addition to the third invention, the interface selects any one of a plurality of decoders according to a system signal indicating an encoding system. And a decoder selector connected to the stream input unit.
- variable length decoding device in addition to the fourth invention, the power consumption of a decoder not selected by the decoder selector among the plurality of decoders is suppressed.
- the stream input unit includes a code detector that detects a stream start code.
- variable-length code can be decoded without any problem even if the start code is not removed in the preceding stage of the variable-length decoder.
- a code detector for detecting a start code can be shared by a plurality of encoding systems, so that an increase in circuit scale can be further suppressed.
- the stream input unit includes: a shift register that holds register data forming a part of the stream; and a stream data having a constant bit width from the register data.
- a data selector for transferring the stream data to the interface, a pointer control unit for controlling a stream pointer for determining the position of the stream data, and a stream data bus for holding the stream data and transferring the stream data to a decoding stage; and interrupting the decoding.
- a stream valid signal line that holds a stream valid signal indicating whether or not to perform decoding and transfers it to the decoding stage; and a decoding start signal line that holds a decoding start signal indicating whether or not to start decoding and transfers it to the decoding stage.
- the register data of the shift register is divided into stream data of a fixed bit width and transferred to the decoding stage.
- the stream data can be sequentially supplied to the decoding stage, and the variable length code can be efficiently decoded.
- the stream valid signal can instruct the decoding stage whether or not to interrupt decoding, and the decoding start signal can instruct the decoding stage to start decoding.
- the decoding stage in addition to the seventh invention, notifies the stream input unit of the code length when the decoding is completed, and the pointer control unit based on the notified code length To move the position of the stream data determined by the stream pointer.
- FIG. 1 is a block diagram of a variable-length code decoding device according to Embodiment 1 of the present invention.
- FIG. 2 is a block diagram of a stream input unit according to Embodiment 1 of the present invention.
- FIG. 3 is a timing chart of the variable-length code decoding device according to Embodiment 1 of the present invention.
- FIG. 4 is a timing chart of the variable-length code decoding device according to Embodiment 1 of the present invention.
- FIG. 5 is a timing chart of the variable-length code decoding device according to Embodiment 1 of the present invention.
- FIG. 6 is a block diagram of a variable-length code decoding device according to Embodiment 2 of the present invention.
- FIG. 7 is a block diagram of a conventional variable length decoder. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a block diagram of a variable-length decoding device according to Embodiment 1 of the present invention.
- variable length decoding device of the present embodiment includes a decoding stage 100 for decoding variable length codes encoded by a plurality of encoding methods, and a stream input unit 1 for inputting variable length codes.
- a decoding stage 100 for decoding variable length codes encoded by a plurality of encoding methods
- a stream input unit 1 for inputting variable length codes.
- an interface 30 that mediates between the decoding stage 100 and the stream input unit 10
- the stream input # 5 10 and the interface 30 are shared for a plurality of encoding schemes.
- variable length decoding device 1 of the present embodiment includes a stream input terminal 2, a system signal input terminal 3, and a decoded data output terminal 4.
- the stream input terminal 2 inputs a bit stream that has been subjected to variable length coding.
- the variable-length decoding device 1 can decode a bit stream encoded by a plurality of encoding methods, but the encoding method relating to the bit stream to be currently decoded is specified by the method signal input to the method signal input terminal 3. Is done.
- the bit stream input from the stream input terminal 2 is transferred to the shift register 11 of the stream input unit 10 by a fixed amount (96 bits in this example).
- the method signal input from the method signal input terminal 3 is input to one of the input terminals of the first and second decoder selectors 34 and 60 and the first and second mask elements 35 and 36. You.
- the decoding data output terminal 4 outputs the decoding data, which is the output data of the variable length decoding device 1, to an external device (in this example, a variable length decoding device conforming to the MPEG standard. Zu) Output to).
- an external device in this example, a variable length decoding device conforming to the MPEG standard. Zu
- variable-length decoding device 1 The internal elements of the variable-length decoding device 1 include a stream input unit 10, a decoding stage 100 having a first decoder 40 and a second decoder 50, and a stream input unit 10. It can be divided into an interface 30 interposed between the decoding stage 100 and a second decoder selector 60.
- the stream input unit 10 of the present example has the following elements as shown in FIG.
- the shift register 11 stores a maximum of 96 bits of the partial data of the bit stream.
- data stored in the shift register 11 is referred to as register data strm-reg.
- the control unit 12 controls the decoding process of the variable length decoding device 1.
- the control unit 12 includes a pointer control unit 13, and the pointer control unit 13 instructs the data selector 14 with a stream pointer strm__ptr.
- the stream selector strm—a fixed amount (32 bits in this example) of stream data strm from the terminal position pointed by the stream pointer strm—ptr _ data is taken out and transferred to the stream data bus 31.
- the end position of the stream data strm_datta indicated by the stream pointer strm_ptr can be changed theoretically in the range of 95 bits to 0 bits.
- the pointer control unit 13 sets the stream position so that this end position does not become smaller than 32 bits, which is the data width of the stream data strm_data output by the data selector 14. Controls mpointer strm_ptr.
- the stream pointer strm—ptr As the end position pointed to by the stream pointer str m_ptr returns from the maximum value of 95 bits to 0 bits, it is transferred to the stream data bus 31.
- the stream pointer strm—ptr is assumed to decrease from the maximum value of 95 bits by a constant difference value (8 bits in this example) in the 0-bit direction. I do.
- the difference value is exactly the value of the code length indicated by the code length signal str m_len described later, and in fact, the code when decoding is completed. It changes with the code length value (variable value) indicated by the long signal str m_len.
- the present invention can be similarly applied to the case where the difference value changes.
- the control unit 12 outputs the bit stream enable instruction signal st rm-en to the stream enable signal line 32 of the interface 30 and outputs the decoding start instruction signal dec_s start to the decoding start signal line 33 of the interface 30. Output.
- the bitstream validity indication signal strm-en indicates whether or not decoding should be interrupted, and the decoding start indication signal dec_statt indicates whether or not decoding can be started.
- the control unit 12 receives the code length signal strm-1en, the decoding completion notification signal dec-end, and the supply stop signal strm-stop from the first decoding selector 34.
- the code length signal strm-1en is 3 as described above.
- the code length signal strm-1 en can be identified. This signal notifies the control unit 12 that the decoder in charge of decoding has entered that state.
- the supply stop signal strm-stop is a signal that the decoder in charge of decoding notifies the control unit 12 of the completion of the process each time the process on the stream data strm-datta is completed.
- the supply stop signal strm-stop is a signal that the control unit 12 is notified even if the decoding of the variable-length coded data is not completed, and the decoding completion notification signal dec_end. Is different.
- the stream input unit 10 of this example includes the following elements. However, these elements can be used when it is not necessary to manipulate the specific code of the bit stream (in this example, the start code of ,, 0x00000001) (for example, before the stream input terminal 2). If the start code has been removed in advance by an element (not shown) provided in, for example), it can be omitted as necessary.
- the code register 15 holds the start code, and inputs the start code to one input terminal of the code detector 16.
- the code detector 16 inputs the value of the first 24 bits of the shift register 11 from the other input terminal, and compares this value with the start code input from the code register 15. When the two match, the code detector 16 outputs a detection signal notifying that the start code has been found to the control unit 12.
- the control unit 12 returns the stream pointer str m_ptr output by the pointer control unit 13 by 24 bits in the 0-bit direction, and as a result, the bit next to the start code of the bit stream Is transferred to the stream data bus 31 as stream data strm-data, and the decoding process starts.
- the stream point The strm_ptr shall start from the maximum value of 95 bits ( so that the specific code held by the code register 15 can be changed by the control unit 12 from an externally input setting signal. If the specific code is erroneously decoded as a part of the variable-length encoded data, the pointer control unit 13 operates the stream pointer strm—ptr as appropriate to It can be modified so that the correct decryption process is performed.
- the interface 30 includes the following elements in addition to the stream data bus 31, the stream valid signal line 32, and the decoding start signal line 33.
- the first decryption selector 3 4 is the first decryption selector
- the second decoder 50 's supply stop signal strm-st0p, decoding completion notification signal dec-end, code length signal strm-1 en, and supply stop signal strm-stop
- the first mask element 35 and the second mask element 36 obtain the logical product of the decoding start instruction signal dec_sstart and the scheme signal.
- the first mask element 35 and the second mask element 36 selectively select one of the first decoder 40 and the second decoder 50 according to the system signal, and are selected.
- the decoder decodes the stream data str m_data transferred from the stream data bus 31.
- the first mask element 35 and the second mask element 36 are logically inverted.
- the first decoder 40 and the second decoder 50 constitute a decoding stage 100 in the first embodiment, and are dedicated decoders corresponding to mutually different code Eich systems.
- the first decoder 40 includes a first table 41, decodes variable-length encoded data according to the MPEG-4 S imp 1 e Profi 1 e method, and outputs the second decoded data.
- the decoded data is output to one terminal of the selector 60.
- the I / O unit 42 inputs and outputs signals to and from the interface 30.
- the second decoder 50 includes a second table 51, decodes variable-length encoded data according to the MPEG-4 AVC method, and decodes the decoded data to the other terminal of the second decoder selector 60. Output data.
- the I / O section 52 inputs and outputs signals to and from the interface 30.
- the second decoder selector 60 outputs the decoded data output from one of the first decoder 40 and the second decoder 50 via the decoded data output terminal 4 according to the system signal. Output to the outside of the decryption device 1.
- Decoders are limited to two types as shown in Fig. 1. Instead, three or more variable-length coding schemes may be supported.
- variable-length decoding device 1 Next, the operation of the variable-length decoding device 1 will be described with reference to FIG. It should be noted that the operation of the variable-length decoding device 1 is the same regardless of whether the system signal selects the first decoder 40 or the second decoder 50, except for the selection operation.
- the pointer control unit 13 sets the stream pointer str m_p tr to 95 bits, which is the maximum value of the shift register 11, and sets the data selector 14 to the end position indicated by the stream pointer st rm—ptr. Transfer the 32 bits of stream data str m_data (data 1) to the stream data bus 31.
- the control unit 12 sets the bit stream enable instruction signal str m_en to “enable”, As shown in FIG. 3 (e), the control unit 12 sets the decoding start instruction signal de c_s start to "start” from time t1 to time t2.
- the first decoder 40 since the first decoder 40 does not decode anything, the first decoder 40 outputs the code length signal st rm-1 en as shown in FIG. 3 (g).
- the code length value shown is “0", and the supply stop signal st rm —stop is “notstop” as shown in Fig. 3 (f).
- the decoding completion notification signal dec-end is in the state of "n0 tend”.
- the first decoder 40 outputs stream data st rm data (d It is assumed that the decoding of ata 1) is started, and the first decoder 40 completes the decoding of one unit only with the stream data str m_d ata (datal) at the time t3. Then, the code length of this one unit is found for the first time (this code length changes depending on the stream data str m_data, but as described above, in order to simplify the explanation, the code length is It is always 8 bits.)
- the first decoder 40 sets the supply stop signal strm-stop to stop, sets the first 5 ⁇ end of loss port “ ⁇ dec-end” to “end”, and sets the code length signal str The value of the code length indicated by m_len is set to “8.” These signals are notified to the control unit 12 via the first decoding selector 34. Further, the first decoder 40 outputs the time t At 4, the supply stop signal strm—stop is returned to “notstop”, the code length value indicated by the code length signal str m — 1 en is set to “0”, and the decoding completion notification signal dec—end is set to “notend”. Put it back.
- the first decoder 40 outputs the stream data strm - After completing the processing of the data (DATAL), if the decoding of one unit is not completed, the supply stop signal s trm- stop, code length signal strm- 1 en is the same as Figure 3. However, as shown in FIG. 4 (h), the first decoder 40 keeps the decoding completion notification signal dec_end at "notend".
- the next stream data str m_d ata (data 2) is transferred to the first decoder 4 ⁇ , and the first decoder 40 transmits the stream data str m_d ata (data 2) Is performed subsequently.
- the first decoder 40 operates at times t15 to t16 in the same manner as at times t4 to t5 in FIG. Is performed.
- the code length signal strm-1en shows 8 bits at times tl3 to tl4 and tl5 to tl6, but this is not an error.
- the stream pointer strm—ptr is 0 bits for the code length 1 en 1 (8 bits in this example) tentatively determined from the stream data str m_d ata (datal) at the time [J t 13].
- the code length 1 en2 (8 bits in this example) determined from the stream data str m_d ata (data 2).
- the stream pointer str m_ptr becomes smaller than the bit width of the stream data str m_data (32 bits in this example), and the data of the subsequent part of the bit stream is shifted by the shift register.
- the operation of the variable-length decoding device 1 when it is added to 11 will be described.
- the stream pointer str m_p tr returns to the 0-bit direction, and finally reaches a bit width smaller than the bit width of the stream data st rm data.
- the stream pointer strm — ptr points to 35 bits, which is larger than the data width of the stream data str m_data.
- the control unit 12 outputs the bit stream validity signal strm. Set en to "disenable".
- the first decoder 40 suspends the decoding process from the time t34.
- the shift register 11 is supplemented with 32 bits of data from the bit stream.
- the control unit 12 changes the bit stream valid instruction signal strm-en to "enab Return to 1 e ".
- the interruption of the decoding process is resolved, and the first decoder 40 completes the decoding process of one unit at time t36. Subsequent operations are the same as those described above.
- the stream input unit 10 and the interface 30 are shared by a plurality of encoding systems, an increase in area can be suppressed. Further, since the code length is transmitted from the decoding stage 100 to the control unit 12, decoders of different encoding schemes can be easily connected.
- variable-length code decoding unit of another encoding method is provided by using two types of encoding methods, “MPEG-4 Simple Profile 1 e” and “MPEG-4AVC”. If it is connected to 30, other encoding methods can be supported.
- the numerical values such as 96 bits, 32 bits, and 8 bits described above are examples. It is needless to say that various changes can be made.
- the stream pointer strm-ptr controls the stream data strm_data in ascending order, but may control it in descending order.
- dedicated decoders 40 and 50 are provided for each of a plurality of encoding schemes.
- a reconfigurable decoder 80 having an I / O unit 81 is provided to configure a decoding stage 200.
- All of the reconfigurable decoders 80 can be configured with reconfigurable logic circuits. For example, only a table holding decoding parameters can be configured as a reconfigurable logic circuit. In any case, it is sufficient that the reconfigurable decoder 80 can realize decoding processing corresponding to a plurality of encoding schemes.
- the interface 70 may be provided with a stream data bus 71, a stream enable signal line 72, and a decoding start signal line 73.
- the decoding selector 34, the first mask element 35, the second mask element 36, and the like can be omitted. Also, there is no need to provide the second decoder selector 60 between the reconfigurable decoder 80 and the decoded data output terminal 4.
- circuit size can be further reduced in the second embodiment than in the first embodiment.
- FIG. 1 it is also possible to provide a reconfigurable decoder 80 instead of the first decoder 40 and to eliminate the second decoder 50.
- variable-length code decoding device of the present invention in a variable-length code decoding device that is required to support a plurality of encoding schemes, the decoding stage shares the stream input unit, so that an increase in area can be suppressed. .
- the connection of the decoding stage is easy, and it is possible to easily cope with other combinations of the encoding system. .
- Industrial applicability INDUSTRIAL APPLICABILITY The variable-length code decoding apparatus according to the present invention can be suitably used, for example, in a system LSI that performs video processing and needs to support a plurality of code schemes, or in an application technology field thereof.
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2006511070A JP4516068B2 (ja) | 2004-03-12 | 2005-03-11 | 可変長符号復号装置 |
US10/582,611 US7683807B2 (en) | 2004-03-12 | 2005-03-11 | Variable-length-code decoding device |
EP20050721050 EP1724931A1 (en) | 2004-03-12 | 2005-03-11 | Variable-length code decoding device |
Applications Claiming Priority (2)
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JP2004070417 | 2004-03-12 | ||
JP2004-070417 | 2004-03-12 |
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WO2005088840A1 true WO2005088840A1 (ja) | 2005-09-22 |
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PCT/JP2005/004863 WO2005088840A1 (ja) | 2004-03-12 | 2005-03-11 | 可変長符号復号装置 |
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US (1) | US7683807B2 (ja) |
EP (1) | EP1724931A1 (ja) |
JP (1) | JP4516068B2 (ja) |
WO (1) | WO2005088840A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008120434A1 (ja) * | 2007-03-28 | 2008-10-09 | Panasonic Corporation | 復号化回路、復号化方法、符号化回路及び符号化方法 |
JP2017157987A (ja) * | 2016-03-01 | 2017-09-07 | 富士ゼロックス株式会社 | データ処理装置およびプログラム |
JP2020526095A (ja) * | 2017-06-28 | 2020-08-27 | エーティーアイ・テクノロジーズ・ユーエルシーAti Technologies Ulc | Gpu並列ハフマン復号化 |
Families Citing this family (2)
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US8717289B2 (en) | 2010-06-22 | 2014-05-06 | Hsni Llc | System and method for integrating an electronic pointing device into digital image data |
CN112492386A (zh) * | 2020-11-09 | 2021-03-12 | Tcl华星光电技术有限公司 | 解码方法、解码装置及可读存储介质 |
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2005
- 2005-03-11 EP EP20050721050 patent/EP1724931A1/en not_active Withdrawn
- 2005-03-11 US US10/582,611 patent/US7683807B2/en not_active Expired - Fee Related
- 2005-03-11 JP JP2006511070A patent/JP4516068B2/ja active Active
- 2005-03-11 WO PCT/JP2005/004863 patent/WO2005088840A1/ja active Application Filing
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JP2003347927A (ja) * | 2002-05-27 | 2003-12-05 | Nippon Telegr & Teleph Corp <Ntt> | 再構成可能なハードウェアにおけるデータ処理回路およびその方法 |
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WO2008120434A1 (ja) * | 2007-03-28 | 2008-10-09 | Panasonic Corporation | 復号化回路、復号化方法、符号化回路及び符号化方法 |
US8249182B2 (en) | 2007-03-28 | 2012-08-21 | Panasonic Corporation | Decoding circuit, decoding method, encoding circuit, and encoding method |
JP2017157987A (ja) * | 2016-03-01 | 2017-09-07 | 富士ゼロックス株式会社 | データ処理装置およびプログラム |
JP2020526095A (ja) * | 2017-06-28 | 2020-08-27 | エーティーアイ・テクノロジーズ・ユーエルシーAti Technologies Ulc | Gpu並列ハフマン復号化 |
JP7441045B2 (ja) | 2017-06-28 | 2024-02-29 | エーティーアイ・テクノロジーズ・ユーエルシー | Gpu並列ハフマン復号化 |
Also Published As
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EP1724931A1 (en) | 2006-11-22 |
JP4516068B2 (ja) | 2010-08-04 |
US7683807B2 (en) | 2010-03-23 |
JPWO2005088840A1 (ja) | 2008-01-31 |
US20090051573A1 (en) | 2009-02-26 |
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