CN100380953C - Digital image decoding device and its method - Google Patents
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Abstract
The present invention relates to a digital image decoding device and a method thereof. An inverse configuration program is carried out for orderly decoding each data area block and orderly outputting decoded data area blocks into the saving areas of decoding result area blocks, wherein a digital image is compressed image data which comprises a plurality of image areas, wherein each image area comprises a plurality of compressed collective area blocks; moreover, each compressed collective area block comprises a plurality of data area blocks. In addition, the digital image decoding method comprises that a compressed data string of the digital image is received and divided into the compressed image data and compressed acoustic data; the compressed image data is saved in the saving area of the compressed image data; the data area blocks of the saving area of the compressed image areas are orderly saved for carrying out the inverse configuration program; the saving areas of the decoding result area blocks are orderly outputted.
Description
Technical field
The invention relates to a kind of digital image decoding device and method thereof, particularly about a kind of digital image decoding device and method thereof of utilizing anti-configurator.
Background technology
Along with people improve for multimedia quality and functional market demand of amusement and consumption electronic product, facilitated multimedia technology toward computational speed and more efficient developing direction are advanced faster.Because multimedia application is the instant audio-visual signal of handling, therefore need relevant software and hardware resources to be cooperated, manufacturer is in order to cater to becoming more diversified of quick transition of multimedia technology and Consumer Preferences, continue to attempt release low cost, vast marketability, high-quality media product, having become manufacturers is enough in response to whippy research and development of standard and Consumer Preferences tactful.
Because the multimedia signal comprises that (data are data to mass data, below all be called data) and have higher data storage resources demand usually, therefore there is the whole bag of tricks before transmitting and storing, to compress and encoding process for multimedia video, for example a kind of DV (digital video) form, completely be described and be defined in the standard specification book, for example IEC 61834, DV-SD/ blue book and SMPTE314M specifications.The device of using this kind DV form is to be block (block) by mathematical technique to distinguish pixel (pixel), for example uses discrete cosine transform (discrete cosinetransformation; DCT) technology is to obtain discrete cosine block (DCT block), and represent form after the compression of this image with discrete cosine transform coefficient (DCT coefficient), and utilize quantification (quantization) technology with the positive integer of each discrete cosine transform coefficient divided by a non-zero, the visible distortion degree when rebuilding this image to reduce.On the other hand, in decoding program, decoder is to be reversed aforementioned coded program to rebuild the approximation of discrete cosine transform coefficient.
In addition, aforesaid DV formatted data string comprises a plurality of picture frames (frame), and each picture frame comprises 30 image sections (video segment), each image section respectively comprises 5 compression huge collection blocks (compressed macroblock), and each huge collection block comprises a brightness (luminance who quantizes numbering (QNO), 4 14 bit group sizes again; Y) chroma (chrominance of block, 2 10 bit group sizes; Cr, Cb) block.Aforementioned each block comprises the information of one group of regular length, the discrete cosine transform coefficient of a DC coefficient (DC coefficient) and a 8*8 pixel size for example, it is that ac coefficient (AC coefficient) by numeral (numeral is a numerical digit, below all be called numeral) image is through discrete cosine transform and get.For every block, required will be in order to the number of cells that stores the discrete cosine transform coefficient because of different quantization encoding patterns difference to some extent, therefore also will cause and not use having or not of bit, when also even required bit number surpasses this block size of fixed configurations, need use the exceptional space of another block, and when surpassing this block size of fixed configurations as if required bit number, this block will produce untapped space.
See also shown in Figure 1ly, be the configuration diagram of known digital video system 10.Wherein, digital video system 10 receives a DV formatted data string, and its source is a Digital Television (digitaltclevision for example; DTV), box (interactive set-top box) on the interactive machine, digital camera (DV camera) and other can produce data such as the image that device produced of DV formatted data string or sound, and this DV formatted data string may be partitioned into digital interface layout sequence (digital interface/interchange format sequence; DIF sequence), hereinafter to be referred as the DIF sequence.Wherein, these DIF sequences are made up of the DIF block of a plurality of regular lengths, and each DIF block includes an identification header (identication header) at least with the kenel that indicates this DIF block and in the position of DIF sequence.Then, this DV formatted data string is received by this digital video system 10, its be comprise a DIF parser (parser) 110 with the data of separating aforementioned DIF formatted data sequence for and produce an image data string and a voice data string; One video decoded device 120 is with this image data string of this result data string of decoding; One message decoder 130 is with this voice data string of decoding, and the output of this video decoded device 120 and message decoder 130 can be delivered to a display and an audio output (not being shown among the figure) respectively again for broadcast then.Wherein, video decoded device 120 still can comprise a processor 140 carrying out preposition analysis (preparsing), inverse quantization (inverse quantization) and anti-discrete cosine conversion (inverse DCT) program etc., and a length-changeable decoding unit 150 (variable length decoding unit; VLD unit) to carry out decoding program.
From the above, each image frame that comprises numerous pixels is cut into numerous block, and huge collection block is promptly formed by these block gatherings.When DV encodes, each block uses one of 8*8 discrete cosine transform or two kinds of patterns of 2*4*8 discrete cosine transform to produce the discrete cosine transform coefficient of each block, after the weighting program, block that each weighting discrete cosine transform becomes can be categorized as 4 classifications (class) again, therefore each block with this discrete cosine transform coefficient then is endowed a classification numbering (class number), and the also designated zone number of the coefficient of each discrete cosine transform coefficient block (area number).The above results can be shown in Fig. 2 A and Fig. 2 B, and wherein Fig. 2 A is to use the area code configuration schematic diagram of 8*8 discrete cosine transform, and Fig. 2 B is then for using the area code configuration schematic diagram of 2*4*8 discrete cosine transform.In other words, the discrete cosine transform coefficient is in order to the data storing and the conveying capacity of decision compression, at quantization stage, choose the cutting apart of discrete cosine transform coefficient is to depend on classification numbering, area code numbering and quantize numbering etc., and in the DV form, it is the huge collection block of 5 compressions that the quantification numbering has limited each image section.On the other hand, in the DV decode procedure, all block information are to be passed to the length-changeable decoding unit, therefore in this length-changeable decoding unit, each block is decoded to obtain the discrete cosine transform coefficient, the discrete cosine transform coefficient can be passed to inverse quantization and anti-discrete cosine converting unit etc. more then, and then exports the picture frame buffer to for follow-up play and demonstration.Because DV is sent to the DV decoder with fixed rate to be decoded, so in the unit interval, have the block of different pieces of information size, its decoding often is restricted.
This shows that above-mentioned existing digital image decoding device and method thereof obviously still have inconvenience and defective, and demand urgently further being improved in structure and use.In order to solve the problem that digital image decoding device and method thereof exist, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure and method to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of new digital image decoding device and method thereof, just become the current industry utmost point to need improved target.
Because the defective that above-mentioned existing digital image decoding device and method thereof exist, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of new digital image decoding device and method thereof, can improve general existing digital image decoding device and method thereof, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the invention
The objective of the invention is to, overcome the defective that existing digital image decoding device and method thereof exist, and provide a kind of new digital image decoding device and method thereof, technical problem to be solved is supported by sufficient hardware resource, one compressing image region of data storage and index for example is provided, make that digitized video can be when finishing a complete block decoding program, in time and intactly be sent to the next stage processing unit and carry out subsequent treatment, for example carry out inverse quantization to an inverse quantization unit, and to an anti-discrete cosine converting unit carrying out the processing of anti-discrete cosine conversion block, thereby be suitable for practicality more.
A kind of digitized video coding/decoding method provided by the invention, a digitized video is used to decode, it may further comprise the steps: at first, carry out an anti-configurator, with a plurality of block of decoding in regular turn, and export each in regular turn and finished decoded data blocks to decoded result block storage area, wherein this digitized video is compressing image data, these compressing image data comprise a plurality of image sections, each this image section comprises the huge collection block of a plurality of compressions, and the huge collection block of each this compression comprises this a plurality of block.Then, output in regular turn is stored in each partial data block to an inverse quantization unit and an anti-discrete cosine converting unit of this decoded result block storage area.Wherein, each partial data block is made up of these a plurality of decoded data blocks of having finished of part.In addition, this digitized video coding/decoding method comprises that more receiving and separating a compressed digital image data string is these compressing image data and a compression sound data, and store these compressing image data to this compressing image section storage area, and a plurality of block of the one compressing image section storage area of access in regular turn, and carry out this anti-configurator.When carrying out this anti-configurator, be to decode in regular turn that each compresses each block of huge collection block, obtaining one first desired value, and export one first and finished decoded data blocks to this decoded result block storage area; And decode according to this first desired value that each compresses the block of huge collection block, and export one second and finished decoded data blocks to this decoded result block storage area.It is discontinuous if the block storage location comparatively disperses, then this this fashion of anti-configurator can comprise and decodes in regular turn that each compresses each block of huge collection block, to obtain one second desired value, and export one the 3rd according to this second desired value and finished decoded data blocks to this decoded result block storage area, and then decode in regular turn that each compresses the block of huge collection block, to obtain a cross-pressure huge collection block desired value that contracts, and then according to this cross-pressure huge collection block desired value contract decoded data blocks of not finishing of huge collection block of a cross-pressure of crossing over the huge collection block of compression of decoding in regular turn that contracts, and that exports that this cross-pressure contracts huge collection block finishes decoded data blocks to this decoded result block storage area, and each partial data block of this decoded result block storage area will comprise that this first has finished decoded data blocks this moment, this second has finished decoded data blocks, the 3rd finished that decoded data blocks and this cross-pressure contract huge collection block finish decoded data blocks.One carry at this, when carrying out this anti-configurator, still can comprise and set this first desired value and this second desired value, give reference data block composition during for decoding.If a data block comprises a plurality of block compositions, then needing to experience a plurality of decode phases can make when a partial data block is stored in this decoded result block storage area, can compare the initial position of block composition of each block and the corresponding boundary value of each block to determine this first desired value and this second desired value, also can compare the bit number of a block composition of each block and the corresponding boundary value of each block to determine this first desired value and this second desired value, thereby set this first desired value and this second desired value is 1, and, set this first desired value and this second desired value is 0 if when data block does not comprise a plurality of block composition; Another kind of design then is if a data block comprises a plurality of block compositions, then needing to experience a plurality of decode phases can make when a partial data block is stored in this decoded result block storage area, can set this first desired value and this second desired value is 0, and, set this first desired value and this second desired value is 1 if when data block does not comprise a plurality of block composition.
The present invention also provides a kind of digital image decoding device, is to be used to decode a digitized video, comprising: an anti-dispensing unit, a length-changeable decoding unit and an index storage area.Anti-dispensing unit is in order to each block of decoding in regular turn, and decoded data blocks has been finished in output in regular turn, wherein this digitized video is compressing image data, these compressing image data comprise a plurality of image sections, each image section comprises the huge collection block of a plurality of compressions, and each compresses huge collection block and comprises a plurality of block, and this anti-dispensing unit more can comprise a decoded result block storage area, be in order to store a plurality of decoded data blocks of having finished, and export a plurality of decoded data blocks of having finished in regular turn, wherein this decoded result block storage area can be positioned at one first random access memory, for example among the SRAM (SRAM), also can be positioned at one second random access memory; This length-changeable decoding unit is in order to these a plurality of block of decoding; This index storage area is in order to store decoding performance level, original position and the bit number of a plurality of desired values to represent each block.In addition, this digital image decoding device still can comprise a compressing image region of data storage and a parser, this compressing image region of data storage is in order to storing these compressing image data and an output data block in regular turn, and wherein this compressing image region of data storage can be positioned among one first random access memory; This parser is to be these compressing image data and a compression sound data in order to receive and to separate a packed data string, to export these compressing image data to this compressing image region of data storage.
By technique scheme, digital image decoding device of the present invention and method thereof have following advantage at least:
Digital image decoding device provided by the invention and method thereof are supported by sufficient hardware resource, one compressing image region of data storage and index for example is provided, make that digitized video can be when finishing a complete block decoding program, in time and intactly be sent to the next stage processing unit and carry out subsequent treatment, for example carry out inverse quantization to an inverse quantization unit, and to an anti-discrete cosine converting unit to carry out the processing of anti-discrete cosine conversion block.Thus, consumption is popular to utilize the obtained digitized video of digital device such as digital camera just can finish decoding/gunzip by this, can be play and view and admire for further exporting a display unit to by a playing program, and, the present invention supports and the signal transmission because can providing by hardware structure, therefore compared to carrying out decoding program with software purely, digital image decoding device of the present invention and method thereof can be accelerated the carrying out of decoding program and promote it to carry out efficient and usefulness, thereby make people's audiovisual entertainment demand and rights and interests can obtain more satisfied and guarantees.
In sum, digital image decoding device that the present invention is special and method thereof, it has above-mentioned many advantages and practical value, and in like product and method, do not see have similar structural design and method to publish or use and really genus innovation, no matter it is at product structure, bigger improvement is all arranged on method or the function, have large improvement technically, and produced handy and practical effect, and more existing digital image decoding device and method thereof have the multinomial effect of enhancement, thereby be suitable for practicality more, and have the extensive value of industry, really be a novelty, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the schematic diagram of known digital video system architecture.
Fig. 2 A is to use the schematic diagram of the area code configuration of 8*8 discrete cosine transform.
Fig. 2 B is to use the schematic diagram of the area code configuration of 2*4*8 discrete cosine transform.
Fig. 3 A is the digitized video coding/decoding method flow chart according to one embodiment of the invention.
Fig. 3 B is the anti-configurator flow chart according to one embodiment of the invention.
Fig. 4 is the schematic diagram according to a compressing image region of data storage of one embodiment of the invention.
Fig. 5 is the schematic diagram according to a decoded result block storage area of one embodiment of the invention.
Fig. 6 is the schematic diagram according to an index storage area of one embodiment of the invention.
Fig. 7 is the digital image decoding device calcspar according to one embodiment of the invention.
10: the digital video system
The 110:DIF parser
120: video decoded device
130: the message decoder
140: processor
150,550: the length-changeable decoding unit
400,520: the compressing image region of data storage
410,420,430,440,450: compress huge collection block
411～416,426: block
Y0～Y3, Y0 ': brightness data block
Cr, Cr ': chroma block
Cb, Cb ', Cb ": the chroma block
460,580: the index storage area
470,560: decoded result block storage area
50: digital image decoding device
510: parser
530: the first random access memories
540: anti-dispensing unit
570: the second random access memories
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to digital image decoding device and its embodiment of method, structure, method, step, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
Seeing also shown in Fig. 3 A, is the digitized video coding/decoding method flow chart according to one embodiment of the invention.In this embodiment, digitized video coding/decoding method according to one embodiment of the invention, be that can to receive and separate a compressed digital image data string at step S31 be compressing image data and a compression sound data, store this compressing image data to compressing image section storage area at step S32, follow a plurality of block in this compressing image section storage area of step S33 access in regular turn, and carry out an anti-configurator, use a plurality of block of decoding in regular turn, and export a plurality of decoded data blocks to decoded result block storage areas of having finished in regular turn, wherein this digitized video is compressing image data, these compressing image data comprise a plurality of image sections, each image section comprises the huge collection block of a plurality of compressions, and each compresses huge collection block and comprises a plurality of block.Then, export each partial data block to an inverse quantization unit and an anti-discrete cosine converting unit of this decoded result block storage area in regular turn at step S34.Wherein, this compressing image section storage area and this decoded result block storage area are to be positioned at same first random access memory, perhaps this decoded result block storage area can be positioned among one second random access memory in addition, depends on that the research staff considers and determines its configuration and plan the support degree of system resources such as the execution usefulness of this digitized video coding/decoding method and memory body, processor, transmission interface with cost.
Seeing also shown in Fig. 3 B, is the anti-configurator flow chart according to one embodiment of the invention.The anti-configurator of Fig. 3 A step S33 more can be undertaken by following steps at this: at first, in decode in regular turn a plurality of block of the huge collection block of a plurality of compressions of step S331, obtaining one first desired value, and export one first and finished decoded data blocks to this decoded result block storage area.Secondly, in step S332 these a plurality of block according to a plurality of huge collection blocks that contract of this first desired value decoding, and export one second and finished decoded data blocks to this decoded result block storage area, in decode in regular turn a plurality of block of the huge collection block of a plurality of compressions of step S333, to obtain one second desired value, comprising each compresses and sets this first desired value in each block process of huge collection block in decoding, for example if a block includes information when indicating this block to comprise a plurality of block composition, can determine this first desired value according to an initial position and the corresponding boundary value of each block of each block composition of each block, there are a plurality of block compositions the position of using this block of indication, also can determine this first desired value according to a bit number and the corresponding boundary value of each block of a block composition of each block, this second desired value and other desired values (for example one the 3rd desired value).In addition, if a data block comprises a plurality of block compositions, then can set this first desired value, this second desired value and the 3rd desired value is 1, and if when data block does not comprise a plurality of block composition, can set this first desired value, this second desired value and the 3rd desired value is 0.In another embodiment, if a data block comprises a plurality of block compositions, can set this first desired value, this second desired value and the 3rd desired value is 0, and if when data block does not comprise a plurality of block composition, can set this first desired value, this second desired value and the 3rd desired value is 1.
Then, execution in step S334, these a plurality of block according to a plurality of huge collection blocks that contract of this second desired value decoding, and export one the 3rd and finished decoded data blocks to this decoded result block storage area, make each partial data block of this decoded result block storage area comprise that this first has finished decoded data blocks, this second has been finished decoded data blocks and the 3rd and finished decoded data blocks.Then, in decode in regular turn a plurality of block of the huge collection block of a plurality of compressions of step S335, to obtain a cross-pressure huge collection block desired value that contracts.Then at step S336 according to this cross-pressure huge collection block desired value contract decoded data blocks of not finishing of huge collection block of a cross-pressure of crossing over the huge collection block of a plurality of compressions of decoding in regular turn that contracts, and finish decoded data blocks to this decoded result block storage area what step S337 exported that this cross-pressure contracts huge collection block, make each partial data block of this decoded result block storage area comprise that this first has finished decoded data blocks, this second has finished decoded data blocks, the 3rd has finished decoded data blocks, and this cross-pressure contract huge collection block finish decoded data blocks.
For this thin portion operation workflow of clear explanation according to the digitized video coding/decoding method of one embodiment of the invention, and the variation situation of these a plurality of desired values in anti-configurator, please then consult Fig. 4 to shown in Figure 6, and please contrast Fig. 3 A and Fig. 3 B in the lump.As shown in the figure, during digitized video decoding process shown in the execution graph 3A, receiving and separate a compressed digital image data string through step S31 is after compressing image data and the compression sound data, one compressing image region of data storage 400 stores an image section of these compressing image data at step S32, it is to comprise 30 data blocks, that is 5 huge collection blocks 410 to 450 of compression, wherein the 1st the huge collection block 410 of compression is to comprise block 411 to 416, wherein block 411 comprises brightness data block Y0, block 412 comprises brightness data block Y1, brightness data block Y0 ' and chroma block Cr ', block 413 comprises brightness data block Y2, block 414 comprises brightness data block Y3 and chroma block Cb ', block 415 comprises chroma block Cr, block 416 comprises chroma block Cb, and the block 426 of the 2nd the huge collection block 420 of compression has comprised chroma block Cb "; compress the block content of huge collection block as for other; be graphic succinct event; in the 4th figure, indicate, also will not give unnecessary details at this.In this embodiment, can't be positioned in the data block because the brightness data block is excessive, therefore be cut into Y0 and Y0 ', and Y0 ' be positioned over the remaining position of having of another block, Cb, Cb ' and Cb ", the cutting of Cr and Cr ' and configuration also in like manner as can be known.
One carry at this, the size of block 411 to 416 respectively is 14 bit groups, and block 415 and 416 respectively is 10 bit groups, so each size of compressing huge collection block is to be 76 bit groups.Then carry out an anti-configurator at step S33, with the block 411 to 456 of decoding compressed huge collection block 410 to 450 in regular turn, and compress at each and to set in each block decode procedure of huge collection block and obtain this first desired value, it is information such as to finish in order to finish as the decoding of designation data block with decoding, and exports one first and finished decoded data blocks to this decoded result block storage area.In this embodiment, be to adopt if when data block comprises a plurality of block composition, setting this first desired value, this second desired value and the 3rd desired value is 0; And if when data block does not comprise a plurality of block composition, set this first desired value, this second desired value and the 3rd desired value are 1 design, for adopting relatively an initial position and the corresponding boundary value of each block of each block composition of each block, to determine this first desired value, this second desired value and the 3rd desired value block composition, and the bit number and the corresponding boundary value of each block that adopt each the block composition that compares each block, to determine this first desired value, other embodiment of this second desired value and the 3rd desired value block composition, arrange in pairs or groups in an initial position of each block composition of each block and a bit number of each block composition of each block is then set this first desired value less than the corresponding boundary value of each block, this second desired value and the 3rd desired value are 1 execution mode, the unanimity as a result in index storage area 460.Wherein, obtain but the corresponding boundary value cumulative data block of each block is big or small, for example the boundary value 28 bit groups of block 412 are that the size 14 bit groups of block 411 add the size 14 bit groups of block 412 and get, also therefore block 412 in the process of carrying out anti-configurator, have and at least once make index storage area 460 corresponding desired values occur 1, to indicate this block to comprise a plurality of block compositions, and mean the block storage location comparatively to disperse and discontinuous, need carry out follow-up anti-configurator and decoding step.Therefore, according to the embodiment shown in Fig. 3 B, 30 data blocks 411 to 456 of the decoding compressed huge collection block 410 to 450 of process step S331, can produce a plurality of first desired values, its content is to correspond respectively to block 411 to 456, and preceding 6 and the 12nd first desired value of these 30 desired values can be shown in index storage areas 460, be { 0,1,0 in regular turn, 1,0,0, ..., 1} is to correspond respectively to block 411 and 412, as for other block desired value can the rest may be inferred.In this embodiment, this index storage area 460 is one-dimensional array (array), and in another embodiment, this index storage area 460 can utilize N dimension array, queue (queue) and other data structures to realize.In addition, step S331 comprises that still exporting first has finished decoded data blocks to decoded result block storage area 470, this decoded result block storage area 470 comprises the storage area 471 to 476 of 30 8*8 pixels etc., so storage area 471 to 476 contents of decoded result block storage area 470 are respectively { Y0 at this moment, Y1, Y2, Y3, Cr, Cb} (not being shown among the figure).
Please consult Fig. 4 to Fig. 6 again, step S332 is according to each first desired value of index storage area 460 each block of decoding, so first desired value of this embodiment step S331 is 1 block, will in this step, decodes, and export one second and finished decoded data blocks to this decoded result block storage area 470, therefore storage area 471 to 476 contents of decoded result block storage area 470 be respectively Y0+Y0 ', Y1, Y2, Y3, Cr, Cb+Cb ' } (not being shown among the figure).Then, decoding in regular turn at step S333, each compresses each block of huge collection block, to obtain one second desired value, and then exporting one the 3rd at step S334 according to this second desired value has finished decoded data blocks to this decoded result block storage area, make a plurality of partial data blocks of this decoded result block storage area comprise that this first has finished decoded data blocks, this second has been finished decoded data blocks and the 3rd and has finished decoded data blocks, and this moment index storage area 460 preceding 6 and the 12nd second desired value be { 0 in regular turn, 1,0,0,0,0 ..., 1}, and storage area 471 to 476 contents of decoded result block storage area 470 be respectively Y0+Y0 ', Y1, Y2, Y3, Cr+Cr ', Cb+Cb ' }.Then, in decode in regular turn a plurality of block of the huge collection block of a plurality of compressions of step S335, to obtain a cross-pressure huge collection block desired value that contracts; Then at step S336 according to this cross-pressure huge collection block desired value contract decoded data blocks of not finishing of huge collection block of a cross-pressure of crossing over the huge collection block of a plurality of compressions of decoding in regular turn that contracts, and export that this cross-pressure contracts huge collection block finish decoded data blocks to this decoded result block storage area, wherein a plurality of partial data blocks of this decoded result block storage area comprise this first finished decoded data blocks, this second finished that decoded data blocks, the 3rd finished that decoded data blocks and this cross-pressure contract huge collection block finish decoded data blocks.Therefore, preceding 6 and the 12nd second desired value of this index storage area 460 are { 0,0,0,0,0 in regular turn, 0 ..., 1}, and storage area 471 to 476 contents of decoded result block storage area 470 are as shown in the figure, be respectively Y0+Y0 ', Y1, Y2, Y3, Cr+Cr ', Cb+Cb '+Cb ".
One carry at this, this block of this embodiment is to be unit with bit group (byte), the data volume that block is stored in compressing image region of data storage 400 is the data volume of an image section, is 5 huge collection blocks of compression, and wherein each block is 76 bit groups altogether; And the data volume that these a plurality of decoded data blocks are stored in this decoded result block storage area 470 can be 30 8*8 pixel sizes, and each comprises the discrete cosine transform coefficient of 9 bits again, so the data volume of each image section is (8*8*30*9) bit (bit).In addition, in the present embodiment, this compressing image region of data storage 400 is to be positioned at one first random access memory, a SRAM (SRAM) for example, and this decoded result block storage area 470 also is positioned at this first random access memory, and in another embodiment, this decoded result block storage area 470 is to be positioned at one second random access memory, for example a SRAM.In addition, this first desired value, this second desired value, the 3rd desired value and this cross-pressure huge block desired value that collects that contracts can directly override index storage area 460 contents with decode phase in each anti-configuration, also can utilize another index storage area to store in another embodiment, quote to treat that each instead disposes to cooperate with decode phase.
Fig. 7 is the digital image decoding device calcspar according to one embodiment of the invention.In this embodiment, digital image decoding device 50 can comprise a parser 510, a compressing image region of data storage 520, one anti-dispensing unit 540 and a decoded result block storage area 560.Parser 510 is to be compressing image data and a compression sound data in order to receive and to separate a compressed digital image data string.Compressing image region of data storage 520 is in order to receive and to store these compressing image data, and export a plurality of block in regular turn, wherein the source of these compressing image data is one can produce and store the device of DV serial data, for example a box and a numeral are taken the photograph news machine etc. on a Digital Television, the interactive machine, and these compressing image region of data storage 520 stored contents comprise a plurality of image sections, each image section comprises the huge collection block of a plurality of compressions, and each compresses huge collection block and comprises a plurality of block.Anti-dispensing unit 540 is in order to these a plurality of block of decoding, and exports these a plurality of decoded data blocks in regular turn.Decoded result block storage area 560 is in order to store these a plurality of decoded data blocks and to export these a plurality of decoded data blocks in regular turn.One carry at this, this compressing image region of data storage 520 is to be positioned at one first random access memory 530, a SRAM for example, this decoded result block storage area 560 can be positioned at one second random access memory 570, another SRAM for example, and in another embodiment, this decoded result block storage area 560 also can be positioned at this first random access memory 530.In addition, this anti-dispensing unit 540 still can comprise a length-changeable decoding unit 550 and an index storage area 580, and wherein length-changeable decoding unit 550 is in order to these a plurality of block of decoding; Index storage area 580 is in order to store a plurality of desired values, and with the characteristic values such as decoding performance level, original position or bit number of representing each block, it is to utilize one-dimensional array and N dimension array to realize, also can utilize other data structures.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the method that can utilize above-mentioned announcement and technology contents are made a little change or be modified to the equivalent embodiment of equivalent variations, but every content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (8)
1. digitized video coding/decoding method, the digitized video that is used to decode is characterized in that it may further comprise the steps:
Carry out an anti-configurator, this anti-configurator may further comprise the steps:
Decode in regular turn a plurality of block of the huge collection block of a plurality of compressions obtaining one first desired value, and are exported one first and have been finished decoded data blocks to decoded result block storage area;
According to this first desired value these a plurality of block of the huge collection block of a plurality of compressions of decoding, and export one second and finished decoded data blocks to this decoded result block storage area;
Decode in regular turn a plurality of block of the huge collection block of a plurality of compressions are to obtain a cross-pressure huge collection block desired value that contracts;
According to this a cross-pressure huge collection block desired value cross-pressure of crossing over the huge collection block of a plurality of compressions decoded data blocks of not finishing of huge collection block that contracts of decoding in regular turn that contracts, and export that this cross-pressure contracts huge collection block finish decoded data blocks to this decoded result block storage area;
Decode in regular turn a plurality of block of the huge collection block of these a plurality of compressions are to obtain one second desired value; And
Export one the 3rd according to this second desired value and finished decoded data blocks to this decoded result block storage area, wherein this digitized video is compressing image data, these compressing image data comprise a plurality of image sections, each image section comprises a plurality of huge collection blocks that contract, and each compresses huge collection block and comprises this a plurality of block, and a plurality of partial data blocks of this decoded result block storage area comprise that this first has finished decoded data blocks, this second has finished decoded data blocks, the 3rd has finished decoded data blocks and this cross-pressure huge collection block that contracts has finished decoded data blocks; And
Export a plurality of partial data block to inverse quantization unit and an anti-discrete cosine converting unit of this decoded result block storage area in regular turn,
Wherein each partial data block is made up of these a plurality of decoded data blocks of having finished.
2. method according to claim 1 is characterized in that it more comprises:
These a plurality of block of the one compressing image section storage area of access in regular turn, and carry out this anti-configurator.
3. method according to claim 2 is characterized in that it more comprises:
Receiving and separating a compressed digital image data string is these compressing image data and a compression sound data; And
Store these compressing image data to this compressing image section storage area.
4. method according to claim 1 is characterized in that it more may further comprise the steps:
The one initial position and the corresponding boundary value of a plurality of block of one block composition of many data blocks are to determine this first desired value and this second desired value.
5. method according to claim 1 is characterized in that it more comprises:
Relatively a bit number of a block composition of these a plurality of block reaches the corresponding boundary value of these a plurality of block, to determine this first desired value and this second desired value.
6. a digital image decoding device is to be used to decode a digitized video, it is characterized in that it comprises:
One anti-dispensing unit, it is used to carry out following steps:
Decode in regular turn a plurality of block of the huge collection block of a plurality of compressions obtaining one first desired value, and are exported one first and have been finished decoded data blocks;
According to this first desired value these a plurality of block of the huge collection block of a plurality of compressions of decoding, and export one second and finished decoded data blocks;
Decode in regular turn a plurality of block of the huge collection block of a plurality of compressions are to obtain a cross-pressure huge collection block desired value that contracts;
According to this a cross-pressure huge collection block desired value cross-pressure of crossing over the huge collection block of a plurality of compressions decoded data blocks of not finishing of huge collection block that contracts of decoding in regular turn that contracts, and export that this cross-pressure contracts huge collection block finish decoded data blocks;
Decode in regular turn a plurality of block of the huge collection block of a plurality of compressions are to obtain one second desired value; And
Export one the 3rd according to this second desired value and finished decoded data blocks, wherein this digitized video is compressing image data, these compressing image data comprise a plurality of image sections, each image section comprises the huge collection block of a plurality of compressions, and each compresses huge collection block and comprises this a plurality of block; And
One decoded result block storage area, be first finished decoded data blocks in order to store this, this second has been finished decoded data blocks, the 3rd and has finished decoded data blocks and this cross-pressure huge collection block that contracts and finished decoded data blocks, and exports in regular turn that this first has finished decoded data blocks, this second has been finished decoded data blocks, the 3rd and finished decoded data blocks and this cross-pressure huge collection block that contracts and finished decoded data blocks.
7. device according to claim 6 is characterized in that it more comprises:
One compressing image region of data storage is in order to storing this compressing image data, and these a plurality of block of output in regular turn; And
One index storage area is in order to store this first desired value, this cross-pressure contract huge collection block desired value, this second desired value, with decoding performance level, original position and the bit number of representing this each block.
8. device according to claim 7 is characterized in that it more comprises:
One parser is to be these compressing image data and a compression sound data in order to receive and to separate a packed data string, to export these compressing image data to this compressing image region of data storage.
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| CNB2005100749853A CN100380953C (en) | 2005-06-06 | 2005-06-06 | Digital image decoding device and its method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1116480A (en) * | 1993-11-08 | 1996-02-07 | 索尼公司 | Animation encoding method, animation decoding method, animation recording medium and animation encoder |
| US5943447A (en) * | 1996-09-21 | 1999-08-24 | Samsung Electronics Co., Ltd. | Video signal encoding/decoding method based on adaptive lattice quantization |
| JP2005057688A (en) * | 2003-08-07 | 2005-03-03 | Fujitsu Ltd | Method, program and device for picture processing |
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2005
- 2005-06-06 CN CNB2005100749853A patent/CN100380953C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1116480A (en) * | 1993-11-08 | 1996-02-07 | 索尼公司 | Animation encoding method, animation decoding method, animation recording medium and animation encoder |
| US5943447A (en) * | 1996-09-21 | 1999-08-24 | Samsung Electronics Co., Ltd. | Video signal encoding/decoding method based on adaptive lattice quantization |
| JP2005057688A (en) * | 2003-08-07 | 2005-03-03 | Fujitsu Ltd | Method, program and device for picture processing |
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