New! View global litigation for patent families

USRE36822E - Moving image signal coding apparatus and coded signal decoding apparatus - Google Patents

Moving image signal coding apparatus and coded signal decoding apparatus Download PDF

Info

Publication number
USRE36822E
USRE36822E US09165356 US16535698A USRE36822E US RE36822 E USRE36822 E US RE36822E US 09165356 US09165356 US 09165356 US 16535698 A US16535698 A US 16535698A US RE36822 E USRE36822 E US RE36822E
Authority
US
Grant status
Grant
Patent type
Prior art keywords
image
motion
signals
frame
information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US09165356
Inventor
Kenji Sugiyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JVCKenwood Corp
Original Assignee
Victor Co of Japan Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Grant date

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51Motion estimation or motion compensation
    • H04N19/577Motion compensation with bidirectional frame interpolation, i.e. using B-pictures
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51Motion estimation or motion compensation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51Motion estimation or motion compensation
    • H04N19/513Processing of motion vectors
    • H04N19/517Processing of motion vectors by encoding
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/85Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • H04N19/89Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving methods or arrangements for detection of transmission errors at the decoder

Abstract

A coding apparatus which codes moving image signals into block units, is configured from a signal processing element which performs motion compensation for moving image signals for over a plural number of frames or fields and codes inter-image signals, and a transfer element which recombines coded information for each block coded by said processing element, into macroblock units which are a plural number of block units of each type of coded information, and transfers them. In addition, a decoding apparatus for moving image signals which have been coded in block units is configured from a detector element which detects transfer code errors for each type of coded information, and a processing element which performs motion compensation and inter-image processing of the coded information using only correct frames which do not include transfer code errors, and without using frames which have transfer code errors, by changing a method of inter-frame processing for motion compensation in accordance with the transfer coding errors in the coded information which has been detected for each type.

Description

This is a continuation of application Ser. No. 08/324,481, filed Oct. 18, 1994 which was abandoned upon the filing hereof, and which, in turn, is a continuation of application Ser. No. 07/972,564, filed Nov. 6, 1992 now abandoned.

BACKGROUND OF THE INVENTION

The present invention relates to high-efficiency coding and decoding apparatus which are used in recording, transfer and display apparatus which perform digital signal processing, and which perform efficient coding and decoding, and in particular, to coding and decoding apparatus which perform inter-image processing of moving image signals have small deterioration of image quality even when there are transmission errors.

High-efficiency coding of moving image signals (moving images) can involve interframe predictive coding which uses the correlation between frames of image signals and uses a frame for which coding has been performed, to predict and code only the prediction error. In recent years, motion compensation predictive coding has become the general method used for prediction in accordance with motion of an image.

On the other hand, in coding in which a storage media is the object, intraframe independent coding is performed without interframe prediction for each of several frames and this enables random access and high-speed search.

In addition, there is also known a method such as MPEG (ISO-IEC) which uses skip prediction and pre- and post-prediction between skip predictions to raise the coding efficiency. With the MPEG method, differences in the method of prediction mean that a frame can be an I (intra) frame coded independently within a frame, a P (Prediction) frame which is skip predicted, or a B (Bi-directional) frame which is pre- and post-predicted.

The following is a description of a detailed configuration of a conventional coding apparatus.

FIG. 1 shows an example of the configuration of a coding apparatus of the MPEG type. Here, the frame types of I, P and B cause the changeover switch 2, 4, 22 to be controlled by sync signals separated from input signals, and to be switched to the positions shown in the figure.

Image signals input from an image input terminal 1 are directly led to a predictive, subtracter 5 via the changeover switches 2 and 4 in the case of I or P frames, while B frames are led to the predictive subtracter 5 after having been delayed until there is pre- and post-I and P in a frame memory 3. In the predictive subtracter 5, prediction signals arriving from an adaptive predictor 42 are subtracted from input signals and a prediction residual signal is output to become coded data compressed by coding in an intraframe encoder 6.

In the intraframe encoder 6, DCT (discrete cosine transform) is first preformed, and that conversion output is quantized, and given a variable length coding such as Huffman coding or the like. That compressed DCT information is applied to a multiplexer 40 and in the case of I and P frames, is led to an intraframe decoder 21 via the changeover switch 22.

The intraframe decoder 21 first decodes the variable length coding, and replaces the fixed-length codes with quantized representative values, and also performs reverse DCT to obtain the reproduced signals. In the intraframe decoder 21, the reproduced prediction error signals have the prediction signals added in a residual adder 20 to produce the reproduced image signals. The reproduced image signals are stored in a frame memory 19 while the signal that have been stored in the frame memory 19 until that time are transferred to a frame memory 18.

The output of the frame memory 19 is given to a motion compensator 15 and a motion vector detector 17, and the output of the frame memory 18 is given to a motion compensator 14 and the motion vector detector 16.

For each block of 16×16 picture elements, the motion vector estimators 16 and 17 detect the motion vectors between the input signals and the signals given to the frame memories 18 and 19. The motion vector information is given to the motion compensators 14 and 15 and also to a multiplexer 40. The motion compensators 14 and 15 spatially move reproduced image signals stored in the frame memories 18 and 19 by the motion vector portion given from the motion vector detector, and applies them to an adaptive predictor 42.

For the same block as the motion vector detection, the adaptive predictor 42 creates four types of prediction signals from the two signals (F and B) which have been motion compensated, and of those, the optimum prediction signals is decided from matching with the input signals which become the signals to be predicted.

The prediction mode used here is one of the four types of only the "F" (Front: prediction signals from the frame temporally prior) mode, only the "B" (Back: prediction signals from the frame temporarily later) mode, the "(F+B)/2" mode or the "0" mode, with the "0" mode being intraframe independent coding. The prediction mode is only the "0" mode for I-frames, the "F" and "0" modes for P-frames, or any of the four modes for B-frames.

The multiplexer 40 recombines the DCT information which is the output of the intraframe encoder 6, the prediction mode information (MODE) which is the output of the adaptive predictor 42, the motion vector information (MVF and MVB) which is the output of the motion vector detector 16, for each block (macroblock: MB) for which the motion vector and the prediction mode have been determined, and outputs them via a data output terminal 12, to the side of a decoding apparatus. FIG. 6A shows the configuration of the data. Here, there is no transfer of the motion vector information not used in the prediction.

The following is a description of a conventional decoding apparatus.

FIG. 2 is a view showing the configuration of a decoding apparatus. Those portions which correspond to portions of the coding apparatus of FIG. 1 are shown with corresponding numerals. The coded data which is input from a data input terminal 30 is disassembled into each information by a demultiplexer 41 and the DCT information is applied to the intraframe decoder 21, the prediction mode information is applied to an adaptive predictor 43, and the motion vector information is applied to the motion compensators 14 and 15.

The DCT information is decoded by the intraframe decoder 21, and prediction signals are added at the residual adder 20 to create the reproduced image signals.

In the case of B-frames, reproduced image signals are immediately outputted from a reproduced image signal output terminal 36 via changeover switches 34 and 35, while I- and P-frames are stored in the frame memory 19. The signals which have been stored in the frame memory 19 up till that time are moved to the frame memory 18 and are outputted from the reproduced image signal output terminal 36 via the changeover switch 35.

The output of the frame memory 19 is applied to the motion compensator 15 while the output of the frame memory 18 is applied to the motion compensator 14. The motion compensators 14 and 15 spatially move the reproduction image signals stored in the frame memory, by the motion vector portion given from the demultiplexer 41, and applies them to the adaptive predictor 43. The adaptive predictor 43 makes the prediction signals from the prediction mode information given from the demultiplexer 41 and outputs it to the residual adder 20.

Here, the inter-image processing units are frames but the description is the same if they are fields of interlace signals.

When there is a coding error between the coding apparatus and its decoding apparatus during transfer or recording, normal demodulation does not occur and there is a deterioration in the image quality. Coding errors result in cell loss in ATM (asynchronous transfer mode) circuits when they occur in normal circuits and recording media, and this loss in cell units becomes a "dropout".

In this case, even for the case of the coding apparatus and the decoding apparatus shown as the conventional example, there is normally detection to the effect that a coding error has occurred and so with prediction residual errors, the prediction residue is not added and the reproduced image signals are the prediction signals only, to result in there being no particularly large deterioration. However, there is absolutely no decoding of a block if there is "dropout" of the motion vector, adjacent blocks and the like are used for interpolation within the same frame and there is no image deterioration as a result.

On the other hand, with a coding method which periodically has independent frames, the deterioration stops with the independent frames and so this method appears advantageous at first. However, coding errors in independent frames can only be compensated for spatially and so there the deterioration becomes large, and the image is influenced later. Furthermore, the amount of data for independent frames is larger than that for prediction frames and so when there are ten independent frames at once, the amount of data is about 40% of the overall amount of data, and the influence of coding errors becomes serious.

SUMMARY OF THE INVENTION

In order to solve the problems described above, the object of the present invention is to provide a moving image coding apparatus and decoding apparatus which always makes a plural number of frames used in interimage processing and transfers information for the motion compensation and inter-image processing method, which detects errors by the decoding apparatus and switches to another frame without the use of a frame which had an error in the inter-image processing for each block, and which has no large image deterioration even if there is a coding error in the transfer path.

In order to attain this objective, as shown in FIG. 3, the present invention is a moving image coding apparatus which codes moving image signals in block units, and is a moving image coding apparatus which has means (a predictive subtractor 5, an adaptive predictor 13, and the like) for motion compensation inter-image processing between a plural number of frames (or fields) and means (memory 7, 8, 9 and 10 and selector 11) for combining coded information for each block and which has been coded by the processing means, for each type of coded information, into a plural number of block units (a plural number of macroblock units) and for then transferring it.

Furthermore, as shown in FIG. 4 for example, the present invention is a moving image decoding apparatus which comprises a decoding apparatus for moving image signals which have been coded in block units, and has means (error detector 38) for detecting transfer coding errors for each type of coded information, and means (adaptive predictor 38, variable adder 33, and the like) for performing motion compensation inter-image processing by changing the method of motion compensation inter-image processing for each block in accordance with errors in each type of coded information which have been detected, and which either does not use decoded signals of frames (or fields) having coding errors and limits use to only decoded signals of correct frames (or fields), or substitute them with decoded signals of other frames (or fields).

A decoding apparatus always makes a plural number of frames for use in the inter-image processing and recombines the information for that motion compensation and inter-image processing method for each type of information and so it is possible to lower the probability that a plural number of pieces of information of the same block will not be used even if error detection is performed in code units of a certain quantity.

In the decoding apparatus, there is the detection of transfer coding errors for each type of coded information and there is switching to another frame instead of using signals of frames having errors in the information for inter-image processing for each block. There is therefore very little image deterioration.

In the moving image coding apparatus and decoding apparatus of the present invention, the number of frames used for inter-image processing is always made a plural number, and the information for the motion compensation and inter-image processing method is recombined into each type of information and transferred, with errors for each type of information being detected and with inter-image processing for each block being switched to another frame without the use of signals of frames having errors in the information, thereby lowering the probability that a plural number of pieces of information in the same block will not be used even if error detection is performed in code units of a certain amount, and thereby enabling there to be little deterioration of the image quality.

By this, it is possible to not have a large amount of deterioration in the image quality even if there is a large number of errors in the transfer path. Accordingly, coding errors are permissible and it is not necessary to have a large amount of correction coding in the transfer coding, with the result that the amount of data can be reduced.

As has been described above, a moving image coding apparatus and decoding apparatus of the present invention has advantageous effects in its practical application.

BRIEF DESCRIPTION OF THE DRAWINGS

In the appended figures:

FIG. 1 is a block diagram showing an outline configuration of a conventional moving image signal coding apparatus;

FIG. 2 is a block diagram showing an outline configuration of a conventional moving image signal decoding apparatus;

FIG. 3 is a block diagram shown an outline configuration of a moving image signal coding apparatus according to a first embodiment of the present invention;

FIG. 4 is a block diagram showing an outline configuration of a moving image signal decoding apparatus according to a first embodiment of the present invention;

FIG. 5 is a block diagram showing an outline configuration of a moving image signal decoding apparatus according to a second embodiment of the present invention; and

FIGS. 6A and 6B are views showing the data configurations in a conventional coding/decoding apparatus and the coding/decoding apparatus according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The following is a detailed description of the preferred embodiments of the moving image coding apparatus and decoding apparatus of the present invention, with reference to the appended drawings.

First is a description of the coding apparatus of a first embodiment of the present invention.

FIG. 3 is a block diagram showing an outline configuration of a moving image signal coding apparatus according to the first embodiment of the present invention. Those portions which correspond to portions of the coding apparatus of FIG. 1 are shown with corresponding numerals.

In FIG. 3, the coding processing is fundamentally the same, with the operation of the changeover switches 2, 4 and 22, the predictive subtracter 5, the intraframe encoder 6, the intraframe decoder 21, the frame memories 18 and 19, the motion compensators 14 and 15, and the motion vector detectors 16 and 17 being the same (as shown by the dots and the like where there is coding in block units).

This coding apparatus differs from the conventional transfer method (FIG. 2) for each of the information of the DCT information which is the output of the intraframe encoder 6, the prediction mode information (MODE) which is the output of the adaptive predictor 42, and the motion vector information (MVF and MVB) which is the output of the motion vector estimators 16 and 17. More specifically, memories 7, 8, 9 and 10 and the selector 11 are configured so that each of the types of information is recombined in the memories and then transferred.

The DCT information which is the output of the intraframe encoder 6, the prediction mode information (MODE) which is the output of an adaptive predictor 13, and the motion vector information (MVF and MVB) which is the output of the motion vector estimators 16 and 17 are all respectively stored once in the memories 7, 8, 19 and 10. Then, at the time when from 30-300 macroblocks have been stored, there is output via the sequential data output 12 selected by the selector 11 and in the format shown in FIG. 6B. The size of the plural number of block units (macroblocks) for each type of the recombined coded information is sufficiently larger than the blocks for error detection, and can be set to a size smaller than the number of blocks of one frame. In this embodiment, dropout in cell units in an ATM circuit is for several macroblocks and the number of blocks of one frame is about 1350 macroblocks and so the size is set to 30-300 macroblocks as described above.

In addition, the adaptive predictor 13 is conventionally used only for the one frame (F-frames) for P frames but in the present embodiment, the configuration enables its use for a plural number of frames (F- and B-frames). Moreover, a motion vector is sent without the use of the predictive mode because of error correspondence in a decoder apparatus.

The following is a description of a decoder apparatus of the first embodiment.

FIG. 4 is a block diagram showing an outline configuration of a moving image signal decoding apparatus according to the first embodiment of the present invention. Those portions which correspond to portions of the coding apparatus of FIGS. 2 and 3 are shown by the same numerals. In FIG. 4, the decoding processing is fundamentally the same as that conventional example shown in FIG. 2, and the operation of the changeover switches 34 and 35, the intraframe decoder 21, the frame memories 18 and 19 and the motion compensators 14 and 15 are the same.

The differences with the conventional example (FIG. 2) is that there are the memories 7, 8, 9 and 10, the selector 31, an error detector 38 and a variable adder 33 which changes the gain of the signals from the predictor and the intraframe decoding signals, with there being a different method of handling of each piece of information and different operation for an adaptive predictor 37 and the variable adder 33.

More specifically, the coded data signals are transferred by the coding device and via the data input terminal 30 and arrive at the selector 31 where they are separated into multiplexer DCT information, prediction mode information and motion vector information which are respectively stored in the memories 7, 8, 9 and 10.

Then, the DCT information which is stored in the memory 7 is applied to the intraframe decoder 21, the prediction mode information which is stored in the memory 8 is applied to the adaptive predictor 37, and the motion vector information which is stored in the memories 9 and 10 is applied to the motion compensators 14 and 15.

On the other hand, the error detector 38 decodes the error detection code of the transmission path coding generated by the coding device, and judges the cell loss information for the ATM circuit to decide if there is an error in what type of information for the macroblock. The type of error changes the prediction mode according to the rules shown in Table 1.

In Table 1, C is a current decoding signal which is the output of the intraframe decoder. When there is dropout of mode information, the frame is which of B or F is temporally closer to C.

              TABLE 1______________________________________Dropout Information           Image Used______________________________________DCT             F, Bmode            C, B or FMVF             C, BMVB             C, F______________________________________

When, as shown in Table 1 which is the error correspondence table, a plural number of images are used when a frame of information has no errors, and an error portion is discarded to use only a correct portion when any frame of information has errors. When there are errors in all of the frames which would have been used, there is also the use of frames which would not have been used. In other words, when an error is obtained in the motion vector MV of frame F even though only the frame F is used in the prediction mode, the intra-image prediction is performed by using the motion vector MV of the frame B which was not originally used. Conversely, under the condition where only the frame B is used in the prediction mode, when the error is obtained in the frame B, the motion vector of the frame F is used despite that the frame F was not originally used. In the present invention, both motion vectors of the frames B and F are transmitted together.

The operation of the variable adder 33 is the same as the residual adder 20 for the conventional example, and when there is dropout of the DCT information, the output of the intraframe decoder 21 is made zero, and the output of the adaptive predictor 37 is output as it is.

In this manner, according to this moving image coding apparatus and decoding apparatus, the number of frames used for inter-image processing is always made a plural number, and the information for the motion compensation and inter-image processing method is recombined into each type of information and transferred, with errors for each type of information being detected and with inter-image processing for each block having switching to another frame without the use of signals of frames having errors in the information, thereby lowering the probability that a plural number of pieces of information in the same block will not be used even if error detection is performed in coding units of a certain amount, and thereby enabling there to be little deterioration of the image quality.

The following is a description of a decoding apparatus of a second embodiment.

The second embodiment of the present invention is applicable to the apparatus "High-efficiency Coding Apparatus and Decoding Apparatus," disclosed in U.S. Ser. No. 07/873,949 filed on Apr. 24, 1992, the inventor of which is the inventor of the invention of the present application.

This embodiment has an improved coding efficiency while at the same time maintaining frame independence, and therefore even uses the inter-frame correlation for I-frames, and performs inter-frame image addition at the decoding apparatus, so that the coding method basically enables the image quality to be maintained even if the quantization is rough.

The difference with the first embodiment is the decoding apparatus, the configuration of which is shown in FIG. 5. The input data is coded by the coding apparatus shown in FIG. 3. The difference between the decoding apparatus of FIG. 5 and that of FIG. 4 is that there is a matching decider 32 which decides the matching of two images. More specifically, the configuration is such that the output of the intraframe decoder 21 and the output of the reproduced image signal output terminal 36 are both led to the matching decider 32 and the variable adder 33.

In addition, the operation differs from the operation of the first embodiment in that the P- and B-frames are the same for only the I-frames. In the I-frames, the matching decider 32 checks the matching of the two images, and gives that much information to the variable adder 33. In the variable adder 33, the prediction signal from the adaptive predictor 37 is increased when there is good matching, while the current frame signal from the intraframe decoder 21 is increased when there is poor matching, and adding is then performed. Here, the sum of the gains of the respective signals is "1".

When there is an error in the signal from the intraframe decoder, the output of the intraframe decoder 21 is forcedly made "0" and only the output of the adaptive predictor 37 is used as the reproduced signals.

By this, it is possible to compensate for coding errors which have occurred in independent frames.

Moreover, I-frame quantization error compensation can use a coding apparatus in which the second embodiment of the present invention has been applied.

Claims (13)

What is claimed is:
1. A coding apparatus for coding moving image signals into block units, comprising:
image processing means for performing motion compensation between a plural number of frames.Iadd./fields per .Iaddend..[.in each.]. block of a plurality of blocks which constitute one .[.image screen.]. .Iadd.frame/field.Iaddend., thereby outputting motion vector data, inter-image processing data indicative of what inter-image processing is performed, and image data, respectively;
a plurality of data memory means for storing multiple types of said motion vector data, said inter-image processing data, and said image data; and
transfer means for time division multiplexing said multiple types of said motion vector data, said inter-image processing data, and said image data, such that said multiple types of said motion vector data for a group of blocks are time multiplexed together in one time division, the inter-image processing data for said group of blocks is time multiplexed together in another time division, and said image data for said group of blocks is time multiplexed to a further time division, and thereby transferring the multiplexed data.
2. The coding apparatus of claim 1, wherein:
said image processing means comprises:
a first changeover switch which switches signals of a bidirection (B) frame.Iadd./field .Iaddend.predicted for front and back of image signals supplied via the first changeover switch and an image signal input terminal, and both signals of a skip-predicted prediction (P) frame.Iadd./field .Iaddend.and an independently-coded intra- (I) frame/.Iadd.field.Iaddend.;
a first frame.Iadd./field .Iaddend.memory which stores signals of said B-frame.Iadd./field .Iaddend.so as to delay them until the end of coding of signals of both said I-frame.Iadd./field .Iaddend.and P-frame.Iadd./field.Iaddend.;
a second changeover switch which switches B-frame.Iadd./field .Iaddend.signals from said first frame.Iadd./field .Iaddend.memory and said I- and P-frame.Iadd./field .Iaddend.signals switched by said first changeover switch;
first and second motion vector estimators which estimate motion vectors of signals of both said I-frame.Iadd./field .Iaddend.and said P-frame.Iadd./field.Iaddend.;
an adaptive predictor which receives signals of frames.Iadd./fields .Iaddend.switched by said second changeover switch;
a residual subtracter which calculates a remainder of signals of frames.Iadd./fields .Iaddend.switched by said second changeover switch, and prediction mode of output information output from said adaptive predictor;
an intra-frame.Iadd./field .Iaddend.coder which codes signals output from said residual subtracter;
a third changeover switch which switches coded signals from said intra-frame.Iadd./field .Iaddend.coder on the basis of B-frames.Iadd./fields.Iaddend., and I-frames.Iadd./fields .Iaddend.and P-frames.Iadd./fields.Iaddend.;
an intra-frame.Iadd./field .Iaddend.decoder which decodes coded signals of each frame.Iadd./field .Iaddend.and from said third changeover switch;
a residual adder which adds signals from said intra-frame.Iadd./field .Iaddend.decoder and said adaptive predictor;
a second frame.Iadd./field .Iaddend.memory which stores one of I-frame.Iadd./field .Iaddend.and P-frame.Iadd./field .Iaddend.signals from said adder so as to delay them;
a third frame.Iadd./field .Iaddend.memory which stores another of I-frame.Iadd./field .Iaddend.and P-frame.Iadd./field .Iaddend.signals which have passed through said second frame.Iadd./field .Iaddend.memory;
said first motion vector estimator which estimates a motion vector of moving image signals for one of I-frames.Iadd./fields .Iaddend.and P-frames.Iadd./fields .Iaddend.said motion vector being supplied via said first changeover switch;
said second motion vector estimator which estimates .[.an other.]. .Iadd.another .Iaddend.motion vector of moving image signals for another of I-frames.Iadd./fields .Iaddend.and P-frames.Iadd./fields.Iaddend., said other motion vector being supplied via said first changeover switch;
a first motion compensator which performs motion compensation of moving image signals of F-frames.Iadd./fields.Iaddend., by an output of said third frame.Iadd./field .Iaddend.memory and an output of said first motion vector estimator; and
a second motion compensator which performs motion compensation of moving image signals of B-frames.Iadd./fields.Iaddend., by an output of said second frame.Iadd./field .Iaddend.memory and an output of said second motion vector estimator; and wherein
said adaptive predictor uses both reproduced image signals which have been moved by a motion vector portion of F-frames.Iadd./fields .Iaddend.and B-frames.Iadd./fields .Iaddend.supplied from said first and second motion compensators and moving image signals supplied via said second changeover switch, as the basis for creating a plural number of prediction signals from a plural number of signals which have been motion compensation by the same clock and for which motion vector detection has been performed, and outputs an optimum prediction signal within said plural number of prediction signals as prediction mode signals to said residual subtracter, said residual adder and said transfer means.
3. The coding apparatus according to claim 2, wherein said plurality of data memory means comprises;
a first memory which stores coded signals output from said intra-frame.Iadd./field .Iaddend.coder of said processing means;
a second memory which stores prediction mode signals output from said adaptive predictor;
a third memory which stores first motion vector signals output from said first motion vector estimator; and
a fourth memory which stores second motion vector signals output from said second motion vector estimator; and
wherein said transfer means comprises a coder which successively selects and outputs signals stored in said first through fourth memories in response to a required number of block pulses.
4. The coding apparatus according to claim 1, wherein said plurality of data memory means comprises:
a first memory which stores coded signals output from said image processing means;
a second memory which stores prediction mode signals output from said image processing means;
a third memory which stores the first motion vector signals output from said image processing means; and
a fourth memory which stores second motion vector signals output from said image processing means; and
wherein said transfer means comprises a selector which successively selects and outputs signals stored in said first through fourth memories in response to a required number of clock pulses.
5. A decoding apparatus for decoding moving image signals coded in block units, comprising:
detection means for receiving input data which includes at least motion vector data, inter-image processing data indicative of what inter-image processing is performed, and image data which are time-division multiplexed and received by the detection means, said detecting means detecting transfer code errors for each of said inter-image processing data and said image data, and outputting the coded information for each data type having said code errors; and
processing means for performing motion compensation and inter-image processing of said coded information using only frames.Iadd./fields .Iaddend.which do not include said transfer code error within a plurality of frames.Iadd./fields .Iaddend.which are to be used for prediction purposes, and without the use of frames.Iadd./fields .Iaddend.which have said transfer code errors within said plurality of frames.Iadd./fields .Iaddend.which are to be used for prediction purposes, by selecting a method of inter-frame.Iadd./field .Iaddend.processing for motion compensation in accordance with said detected transfer code errors, wherein one .[.image screen.]. .Iadd.frame/field .Iaddend.comprises a plurality of blocks, .[.each block comprises a plurality of frames,.]. and wherein motion compensation and inter-image processing is performed .[.in each.]. .Iadd.per .Iaddend.block.
6. The decoding apparatus according to claim 5, wherein said processing means uses only those frames.Iadd./fields .Iaddend.which do not have coding errors, to perform motion compensation of said coded information.
7. The decoding apparatus according to claim 5, wherein said detection means comprises an error detector which detects said transfer code errors included in coded information supplied from a coding apparatus via a data input terminal.
8. The decoding apparatus according to claim 5, wherein said processing means comprises:
an adaptive predictor responsive to output of said detection means for generating as output prediction signals from prediction mode information included in said coded information; and
a variable adder responsive to output of said detection means and said adaptive predictor for adding decoded signals of said coded information and prediction signals of said adaptive predictor.
9. The decoding apparatus according to claim 5, and further comprising:
a selector which separates DCT (discrete cosine transform) information, prediction mode information, first motion vector information and second motion vector information multiplexed in said coded information signals;
first, second, third and fourth memories which respectively store said DCT information, prediction mode information, first motion vector information and second motion vector information separated by selector; and
wherein said detecting means comprises:
an error detector which detects transfer code errors in said coded information signals;
an intra-frame.Iadd./field .Iaddend.decoder which decodes said DCT information stored in said first memory;
a first frame.Iadd./field .Iaddend.memory;
a second frame.Iadd./field .Iaddend.memory;
a first motion compensator which uses signals of the first frame.Iadd./field .Iaddend.memory as the basis for performing motion compensation for said first motion vector information stored in said third memory;
a second motion compensator which uses signals of the second frame.Iadd./field .Iaddend.memory as the basis for performing motion compensation for said second motion vector information stored in said fourth memory;
an adaptive predictor which uses first and second compensation signals output from said first and second motion compensator, and output signals of said error detector as the basis for generating prediction signals from said prediction mode information stored in said second memory;
a variable adder which adds prediction signals from said adaptive predictor, decoded signals from said intra-frame.Iadd./field .Iaddend.decoder and output signals of said error detector; and
changeover switch means for switching between outputs of said variable adder and which is connected to said first and second frame.Iadd./field .Iaddend.memory.
10. The decoder apparatus according to claim 9, further provided with a matching decider which judges matching between decoded signals from said intra-frame.Iadd./field .Iaddend.decoder and prediction signals from said adaptive predictor and outputs to said variable adder.
11. A coding apparatus for coding moving image signals into block units, comprising:
image processing means for dividing one .[.screen.]. .Iadd.frame/field .Iaddend.into a plurality of blocks, .[.each block comprising a plurality of frames,.]. and performing motion compensation image processing between a plural number of frames.Iadd./fields .Iaddend..[.in each.]. .Iadd.per .Iaddend.block, and outputting primary motion vector data which is used for a motion compensation, .[.in said primary motion vector data, in.]. inter-image processing data indicative of what inter-image processing is performed, and .[.in.]. image data .Iadd.which is inter-image processed.Iaddend.;
motion vector detection means for detecting secondary motion vector data which is used in providing error concealment in a decoding apparatus when code errors occur during a data transmission; and
transfer means for multiplexing said primary motion vector data, said secondary motion vector data, said inter-image processing data and said image data.
12. A decoding apparatus for decoding moving image signals coded in block units, comprising:
detection means for receiving input data including at least primary motion vector data which is used for motion compensation, inter-image processing data indicative of what inter-image processing is performed, and image data .Iadd.which is inter-image processed.Iaddend., and for detecting code errors included in said input data;
reception means for receiving secondary motion vector data which is used in providing error concealment .[.in said decoding apparatus.]. only when code errors occur during a data transmission; and
image processing means for performing motion compensation and inter-image processing between a plurality of frames.Iadd./fields .Iaddend..[.that make up a block, and wherein.]. .Iadd.per block of .Iaddend.a plurality of blocks .[.make up an image screen.]. .Iadd.which constitutes one frame/field.Iaddend., the motion compensation and inter-image processing employing said primary motion vector data only when there is no code error in said input data, and said image processing means performing motion compensation and inter-image processing using said secondary motion vector data when the input data has code errors.
13. A decoding apparatus for decoding moving image signals coded in block units, comprising:
detection means for receiving input data which includes at least motion vector data, inter-image processing data, and image data and which is transferred by time division multiplexing said input data such that said motion vector data for a group of blocks are time multiplexed together in one time division, the inter-image processing data for said group of blocks is time multiplexed together in another time division, and said image data for said group of blocks is time multiplexed to a further time division, said detecting means detecting transfer code errors for each of said inter-image processing data and said image data, and outputting coded information signals for each type having said code errors:
wherein said detection means comprises
an error detector which detects transfer cod errors in said coded information signals;
and intra-frame.Iadd./field .Iaddend.decoder which decodes a discrete cosine transform (DCT) information in a first memory;
a predictor which uses first and second compensation signals output from a first and second motion compensators, respectively, and output signals of said error detector as the basis for generating prediction signals from prediction mode information stored in a second memory; and
a variable adder which adds said prediction signals from said predictor, decoded signals from said intra-frame.Iadd./field .Iaddend.decoder and output signals from said error detector.
US09165356 1991-11-08 1998-10-02 Moving image signal coding apparatus and coded signal decoding apparatus Expired - Lifetime USRE36822E (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP32136891A JP2962012B2 (en) 1991-11-08 1991-11-08 Video encoding apparatus and decoding apparatus
JP3-321368 1991-11-08
US97256492 true 1992-11-06 1992-11-06
US32448194 true 1994-10-18 1994-10-18
US08666687 US5748784A (en) 1991-11-08 1996-06-17 Moving image signal coding apparatus and coded signal decoding apparatus
US09165356 USRE36822E (en) 1991-11-08 1998-10-02 Moving image signal coding apparatus and coded signal decoding apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09165356 USRE36822E (en) 1991-11-08 1998-10-02 Moving image signal coding apparatus and coded signal decoding apparatus

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
US32448194 Continuation 1994-10-18 1994-10-18
US08666687 Reissue US5748784A (en) 1991-11-08 1996-06-17 Moving image signal coding apparatus and coded signal decoding apparatus

Publications (1)

Publication Number Publication Date
USRE36822E true USRE36822E (en) 2000-08-15

Family

ID=18131790

Family Applications (2)

Application Number Title Priority Date Filing Date
US08666687 Expired - Lifetime US5748784A (en) 1991-11-08 1996-06-17 Moving image signal coding apparatus and coded signal decoding apparatus
US09165356 Expired - Lifetime USRE36822E (en) 1991-11-08 1998-10-02 Moving image signal coding apparatus and coded signal decoding apparatus

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US08666687 Expired - Lifetime US5748784A (en) 1991-11-08 1996-06-17 Moving image signal coding apparatus and coded signal decoding apparatus

Country Status (2)

Country Link
US (2) US5748784A (en)
JP (1) JP2962012B2 (en)

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6266448B1 (en) * 1997-12-24 2001-07-24 Oki Electric Industry Co., Ltd. Method of and apparatus for compressing and encoding digitized moving picture signals
US20030113026A1 (en) * 2001-12-17 2003-06-19 Microsoft Corporation Skip macroblock coding
US20030194011A1 (en) * 2002-04-10 2003-10-16 Microsoft Corporation Rounding control for multi-stage interpolation
US20030202607A1 (en) * 2002-04-10 2003-10-30 Microsoft Corporation Sub-pixel interpolation in motion estimation and compensation
US20040008899A1 (en) * 2002-07-05 2004-01-15 Alexandros Tourapis Optimization techniques for data compression
US20040126030A1 (en) * 1998-11-30 2004-07-01 Microsoft Corporation Coded block pattern decoding with spatial prediction
US20050013497A1 (en) * 2003-07-18 2005-01-20 Microsoft Corporation Intraframe and interframe interlace coding and decoding
US20050036759A1 (en) * 1998-11-30 2005-02-17 Microsoft Corporation Efficient motion vector coding for video compression
US20050053156A1 (en) * 2003-09-07 2005-03-10 Microsoft Corporation Bitplane coding and decoding for AC prediction status information
US20050053292A1 (en) * 2003-09-07 2005-03-10 Microsoft Corporation Advanced bi-directional predictive coding of interlaced video
US20050053140A1 (en) * 2003-09-07 2005-03-10 Microsoft Corporation Signaling macroblock mode information for macroblocks of interlaced forward-predicted fields
US20050053144A1 (en) * 2003-09-07 2005-03-10 Microsoft Corporation Selecting between dominant and non-dominant motion vector predictor polarities
US20050053296A1 (en) * 2003-09-07 2005-03-10 Microsoft Corporation Bitplane coding for macroblock field/frame coding type information
US20050058205A1 (en) * 2003-09-07 2005-03-17 Microsoft Corporation Extended range variable length coding/decoding of differential motion vector information
US20070036222A1 (en) * 2005-08-12 2007-02-15 Microsoft Corporation Non-zero coefficient block pattern coding
US7224731B2 (en) 2002-06-28 2007-05-29 Microsoft Corporation Motion estimation/compensation for screen capture video
US7646810B2 (en) 2002-01-25 2010-01-12 Microsoft Corporation Video coding
US7738554B2 (en) 2003-07-18 2010-06-15 Microsoft Corporation DC coefficient signaling at small quantization step sizes
US7925774B2 (en) 2008-05-30 2011-04-12 Microsoft Corporation Media streaming using an index file
US8189666B2 (en) 2009-02-02 2012-05-29 Microsoft Corporation Local picture identifier and computation of co-located information
US8254455B2 (en) 2007-06-30 2012-08-28 Microsoft Corporation Computing collocated macroblock information for direct mode macroblocks
US8374245B2 (en) 2002-06-03 2013-02-12 Microsoft Corporation Spatiotemporal prediction for bidirectionally predictive(B) pictures and motion vector prediction for multi-picture reference motion compensation
US8379722B2 (en) 2002-07-19 2013-02-19 Microsoft Corporation Timestamp-independent motion vector prediction for predictive (P) and bidirectionally predictive (B) pictures
US8625669B2 (en) 2003-09-07 2014-01-07 Microsoft Corporation Predicting motion vectors for fields of forward-predicted interlaced video frames
US8687697B2 (en) 2003-07-18 2014-04-01 Microsoft Corporation Coding of motion vector information
US9749642B2 (en) 2014-01-08 2017-08-29 Microsoft Technology Licensing, Llc Selection of motion vector precision
US9774881B2 (en) 2014-01-08 2017-09-26 Microsoft Technology Licensing, Llc Representing motion vectors in an encoded bitstream
US9942560B2 (en) 2014-10-31 2018-04-10 Microsoft Technology Licensing, Llc Encoding screen capture data

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6404813B1 (en) 1997-03-27 2002-06-11 At&T Corp. Bidirectionally predicted pictures or video object planes for efficient and flexible video coding
US6370276B2 (en) * 1997-04-09 2002-04-09 Matsushita Electric Industrial Co., Ltd. Image predictive decoding method, image predictive decoding apparatus, image predictive coding method, image predictive coding apparatus, and data storage media
US7630006B2 (en) * 1997-10-09 2009-12-08 Fotonation Ireland Limited Detecting red eye filter and apparatus using meta-data
US9412007B2 (en) 2003-08-05 2016-08-09 Fotonation Limited Partial face detector red-eye filter method and apparatus
US7738015B2 (en) 1997-10-09 2010-06-15 Fotonation Vision Limited Red-eye filter method and apparatus
US7042505B1 (en) 1997-10-09 2006-05-09 Fotonation Ireland Ltd. Red-eye filter method and apparatus
US8520093B2 (en) 2003-08-05 2013-08-27 DigitalOptics Corporation Europe Limited Face tracker and partial face tracker for red-eye filter method and apparatus
JP3888597B2 (en) * 1998-06-24 2007-03-07 日本ビクター株式会社 Motion compensation coding unit, and a motion compensation coding decoding method
JP2000023162A (en) * 1998-06-29 2000-01-21 Sony Corp Device and method for encoding
JP3630590B2 (en) * 1999-08-25 2005-03-16 沖電気工業株式会社 Decoding apparatus and transmission system
US7181070B2 (en) * 2001-10-30 2007-02-20 Altera Corporation Methods and apparatus for multiple stage video decoding
US7574016B2 (en) 2003-06-26 2009-08-11 Fotonation Vision Limited Digital image processing using face detection information
US7609763B2 (en) * 2003-07-18 2009-10-27 Microsoft Corporation Advanced bi-directional predictive coding of video frames
US7499495B2 (en) * 2003-07-18 2009-03-03 Microsoft Corporation Extended range motion vectors
US20050140801A1 (en) * 2003-08-05 2005-06-30 Yury Prilutsky Optimized performance and performance for red-eye filter method and apparatus
US7616692B2 (en) * 2003-09-07 2009-11-10 Microsoft Corporation Hybrid motion vector prediction for interlaced forward-predicted fields
US7599438B2 (en) * 2003-09-07 2009-10-06 Microsoft Corporation Motion vector block pattern coding and decoding
US7620106B2 (en) * 2003-09-07 2009-11-17 Microsoft Corporation Joint coding and decoding of a reference field selection and differential motion vector information
US8254674B2 (en) 2004-10-28 2012-08-28 DigitalOptics Corporation Europe Limited Analyzing partial face regions for red-eye detection in acquired digital images
US7587085B2 (en) * 2004-10-28 2009-09-08 Fotonation Vision Limited Method and apparatus for red-eye detection in an acquired digital image
US7792970B2 (en) 2005-06-17 2010-09-07 Fotonation Vision Limited Method for establishing a paired connection between media devices
US7689009B2 (en) 2005-11-18 2010-03-30 Fotonation Vision Ltd. Two stage detection for photographic eye artifacts
US7920723B2 (en) * 2005-11-18 2011-04-05 Tessera Technologies Ireland Limited Two stage detection for photographic eye artifacts
US7599577B2 (en) * 2005-11-18 2009-10-06 Fotonation Vision Limited Method and apparatus of correcting hybrid flash artifacts in digital images
US7970182B2 (en) 2005-11-18 2011-06-28 Tessera Technologies Ireland Limited Two stage detection for photographic eye artifacts
JP4643715B2 (en) 2006-02-14 2011-03-02 テセラ テクノロジーズ アイルランド リミテッド Automatic detection and correction of defects due to the eyes of the flash is not a red-eye
KR101330630B1 (en) * 2006-03-13 2013-11-22 삼성전자주식회사 Method and apparatus for encoding moving picture, method and apparatus for decoding moving picture, applying adaptively an optimal prediction mode
US7965875B2 (en) 2006-06-12 2011-06-21 Tessera Technologies Ireland Limited Advances in extending the AAM techniques from grayscale to color images
US8170294B2 (en) 2006-11-10 2012-05-01 DigitalOptics Corporation Europe Limited Method of detecting redeye in a digital image
US8055067B2 (en) 2007-01-18 2011-11-08 DigitalOptics Corporation Europe Limited Color segmentation
EP2145288A4 (en) 2007-03-05 2013-09-04 Digitaloptics Corp Europe Ltd Red eye false positive filtering using face location and orientation
US8503818B2 (en) 2007-09-25 2013-08-06 DigitalOptics Corporation Europe Limited Eye defect detection in international standards organization images
US8036458B2 (en) 2007-11-08 2011-10-11 DigitalOptics Corporation Europe Limited Detecting redeye defects in digital images
US8212864B2 (en) 2008-01-30 2012-07-03 DigitalOptics Corporation Europe Limited Methods and apparatuses for using image acquisition data to detect and correct image defects
US8081254B2 (en) 2008-08-14 2011-12-20 DigitalOptics Corporation Europe Limited In-camera based method of detecting defect eye with high accuracy

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4982285A (en) * 1989-04-27 1991-01-01 Victor Company Of Japan, Ltd. Apparatus for adaptive inter-frame predictive encoding of video signal
US5113255A (en) * 1989-05-11 1992-05-12 Matsushita Electric Industrial Co., Ltd. Moving image signal encoding apparatus and decoding apparatus
US5122875A (en) * 1991-02-27 1992-06-16 General Electric Company An HDTV compression system
US5142360A (en) * 1990-03-06 1992-08-25 Victor Company Of Japan, Ltd. Motion vector detection circuit used in hierarchical processing of moving picture signal
US5157742A (en) * 1990-02-28 1992-10-20 Victor Company Of Japan, Ltd. Motion image data compression system
US5170259A (en) * 1990-09-29 1992-12-08 Victor Company Of Japan, Ltd. Motion compensated predictive coding/decoding system of picture signal
US5315326A (en) * 1991-04-26 1994-05-24 Victor Company Of Japan, Ltd. Efficient coding/decoding apparatuses for processing digital image signal

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4982285A (en) * 1989-04-27 1991-01-01 Victor Company Of Japan, Ltd. Apparatus for adaptive inter-frame predictive encoding of video signal
US5113255A (en) * 1989-05-11 1992-05-12 Matsushita Electric Industrial Co., Ltd. Moving image signal encoding apparatus and decoding apparatus
US5157742A (en) * 1990-02-28 1992-10-20 Victor Company Of Japan, Ltd. Motion image data compression system
US5142360A (en) * 1990-03-06 1992-08-25 Victor Company Of Japan, Ltd. Motion vector detection circuit used in hierarchical processing of moving picture signal
US5170259A (en) * 1990-09-29 1992-12-08 Victor Company Of Japan, Ltd. Motion compensated predictive coding/decoding system of picture signal
US5122875A (en) * 1991-02-27 1992-06-16 General Electric Company An HDTV compression system
US5315326A (en) * 1991-04-26 1994-05-24 Victor Company Of Japan, Ltd. Efficient coding/decoding apparatuses for processing digital image signal

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Verbiest et al. "The impact of the ATM Concept on Video coding", Dec. 1998, pp. 1623-1632 IEEE Journal on Selected Areas in Communications.
Verbiest et al. The impact of the ATM Concept on Video coding , Dec. 1998, pp. 1623 1632 IEEE Journal on Selected Areas in Communications. *

Cited By (71)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6266448B1 (en) * 1997-12-24 2001-07-24 Oki Electric Industry Co., Ltd. Method of and apparatus for compressing and encoding digitized moving picture signals
US7054494B2 (en) 1998-11-30 2006-05-30 Microsoft Corporation Coded block pattern decoding with spatial prediction
US7289673B2 (en) 1998-11-30 2007-10-30 Microsoft Corporation Decoding macroblock type and coded block pattern information
US8582903B2 (en) 1998-11-30 2013-11-12 Microsoft Corporation Efficient macroblock header coding for video compression
US20060110059A1 (en) * 1998-11-30 2006-05-25 Microsoft Corporation Efficient macroblock header coding for video compression
US20040126030A1 (en) * 1998-11-30 2004-07-01 Microsoft Corporation Coded block pattern decoding with spatial prediction
US8290288B2 (en) 1998-11-30 2012-10-16 Microsoft Corporation Encoding macroblock type and coded block pattern information
US20050036759A1 (en) * 1998-11-30 2005-02-17 Microsoft Corporation Efficient motion vector coding for video compression
US7127114B2 (en) 1998-11-30 2006-10-24 Microsoft Corporation Coded block pattern encoding with spatial prediction
US9774852B2 (en) 2001-12-17 2017-09-26 Microsoft Technology Licensing, Llc Skip macroblock coding
US20090262835A1 (en) * 2001-12-17 2009-10-22 Microsoft Corporation Skip macroblock coding
US8428374B2 (en) 2001-12-17 2013-04-23 Microsoft Corporation Skip macroblock coding
US7379607B2 (en) 2001-12-17 2008-05-27 Microsoft Corporation Skip macroblock coding
US9088785B2 (en) 2001-12-17 2015-07-21 Microsoft Technology Licensing, Llc Skip macroblock coding
US20070110326A1 (en) * 2001-12-17 2007-05-17 Microsoft Corporation Skip macroblock coding
US20030113026A1 (en) * 2001-12-17 2003-06-19 Microsoft Corporation Skip macroblock coding
US7200275B2 (en) 2001-12-17 2007-04-03 Microsoft Corporation Skip macroblock coding
US7555167B2 (en) 2001-12-17 2009-06-30 Microsoft Corporation Skip macroblock coding
US9538189B2 (en) 2001-12-17 2017-01-03 Microsoft Technology Licensing, Llc Skip macroblock coding
US9888237B2 (en) 2002-01-25 2018-02-06 Microsoft Technology Licensing, Llc Video coding
US8406300B2 (en) 2002-01-25 2013-03-26 Microsoft Corporation Video coding
US8638853B2 (en) 2002-01-25 2014-01-28 Microsoft Corporation Video coding
US7646810B2 (en) 2002-01-25 2010-01-12 Microsoft Corporation Video coding
US20030194011A1 (en) * 2002-04-10 2003-10-16 Microsoft Corporation Rounding control for multi-stage interpolation
US20030202607A1 (en) * 2002-04-10 2003-10-30 Microsoft Corporation Sub-pixel interpolation in motion estimation and compensation
US7305034B2 (en) 2002-04-10 2007-12-04 Microsoft Corporation Rounding control for multi-stage interpolation
US7620109B2 (en) 2002-04-10 2009-11-17 Microsoft Corporation Sub-pixel interpolation in motion estimation and compensation
US9185427B2 (en) 2002-06-03 2015-11-10 Microsoft Technology Licensing, Llc Spatiotemporal prediction for bidirectionally predictive (B) pictures and motion vector prediction for multi-picture reference motion compensation
US8873630B2 (en) 2002-06-03 2014-10-28 Microsoft Corporation Spatiotemporal prediction for bidirectionally predictive (B) pictures and motion vector prediction for multi-picture reference motion compensation
US9571854B2 (en) 2002-06-03 2017-02-14 Microsoft Technology Licensing, Llc Spatiotemporal prediction for bidirectionally predictive (B) pictures and motion vector prediction for multi-picture reference motion compensation
US8374245B2 (en) 2002-06-03 2013-02-12 Microsoft Corporation Spatiotemporal prediction for bidirectionally predictive(B) pictures and motion vector prediction for multi-picture reference motion compensation
US7224731B2 (en) 2002-06-28 2007-05-29 Microsoft Corporation Motion estimation/compensation for screen capture video
US7280700B2 (en) 2002-07-05 2007-10-09 Microsoft Corporation Optimization techniques for data compression
US20040008899A1 (en) * 2002-07-05 2004-01-15 Alexandros Tourapis Optimization techniques for data compression
US8379722B2 (en) 2002-07-19 2013-02-19 Microsoft Corporation Timestamp-independent motion vector prediction for predictive (P) and bidirectionally predictive (B) pictures
US8774280B2 (en) 2002-07-19 2014-07-08 Microsoft Corporation Timestamp-independent motion vector prediction for predictive (P) and bidirectionally predictive (B) pictures
US9313509B2 (en) 2003-07-18 2016-04-12 Microsoft Technology Licensing, Llc DC coefficient signaling at small quantization step sizes
US7426308B2 (en) 2003-07-18 2008-09-16 Microsoft Corporation Intraframe and interframe interlace coding and decoding
US8687697B2 (en) 2003-07-18 2014-04-01 Microsoft Corporation Coding of motion vector information
US9148668B2 (en) 2003-07-18 2015-09-29 Microsoft Technology Licensing, Llc Coding of motion vector information
US8917768B2 (en) 2003-07-18 2014-12-23 Microsoft Corporation Coding of motion vector information
US20050013497A1 (en) * 2003-07-18 2005-01-20 Microsoft Corporation Intraframe and interframe interlace coding and decoding
US7738554B2 (en) 2003-07-18 2010-06-15 Microsoft Corporation DC coefficient signaling at small quantization step sizes
US7852936B2 (en) 2003-09-07 2010-12-14 Microsoft Corporation Motion vector prediction in bi-directionally predicted interlaced field-coded pictures
US8064520B2 (en) 2003-09-07 2011-11-22 Microsoft Corporation Advanced bi-directional predictive coding of interlaced video
US7924920B2 (en) 2003-09-07 2011-04-12 Microsoft Corporation Motion vector coding and decoding in interlaced frame coded pictures
US20050053292A1 (en) * 2003-09-07 2005-03-10 Microsoft Corporation Advanced bi-directional predictive coding of interlaced video
US7664177B2 (en) 2003-09-07 2010-02-16 Microsoft Corporation Intra-coded fields for bi-directional frames
US20050053140A1 (en) * 2003-09-07 2005-03-10 Microsoft Corporation Signaling macroblock mode information for macroblocks of interlaced forward-predicted fields
US7606311B2 (en) 2003-09-07 2009-10-20 Microsoft Corporation Macroblock information signaling for interlaced frames
US7606308B2 (en) 2003-09-07 2009-10-20 Microsoft Corporation Signaling macroblock mode information for macroblocks of interlaced forward-predicted fields
US8625669B2 (en) 2003-09-07 2014-01-07 Microsoft Corporation Predicting motion vectors for fields of forward-predicted interlaced video frames
US20050053144A1 (en) * 2003-09-07 2005-03-10 Microsoft Corporation Selecting between dominant and non-dominant motion vector predictor polarities
US20050053296A1 (en) * 2003-09-07 2005-03-10 Microsoft Corporation Bitplane coding for macroblock field/frame coding type information
US20050058205A1 (en) * 2003-09-07 2005-03-17 Microsoft Corporation Extended range variable length coding/decoding of differential motion vector information
US7092576B2 (en) 2003-09-07 2006-08-15 Microsoft Corporation Bitplane coding for macroblock field/frame coding type information
US7099515B2 (en) 2003-09-07 2006-08-29 Microsoft Corporation Bitplane coding and decoding for AC prediction status information
US7680185B2 (en) 2003-09-07 2010-03-16 Microsoft Corporation Self-referencing bi-directionally predicted frames
US20050053156A1 (en) * 2003-09-07 2005-03-10 Microsoft Corporation Bitplane coding and decoding for AC prediction status information
US20070036222A1 (en) * 2005-08-12 2007-02-15 Microsoft Corporation Non-zero coefficient block pattern coding
US9077960B2 (en) 2005-08-12 2015-07-07 Microsoft Corporation Non-zero coefficient block pattern coding
US8254455B2 (en) 2007-06-30 2012-08-28 Microsoft Corporation Computing collocated macroblock information for direct mode macroblocks
US8819754B2 (en) 2008-05-30 2014-08-26 Microsoft Corporation Media streaming with enhanced seek operation
US7925774B2 (en) 2008-05-30 2011-04-12 Microsoft Corporation Media streaming using an index file
US8370887B2 (en) 2008-05-30 2013-02-05 Microsoft Corporation Media streaming with enhanced seek operation
US7949775B2 (en) 2008-05-30 2011-05-24 Microsoft Corporation Stream selection for enhanced media streaming
US8189666B2 (en) 2009-02-02 2012-05-29 Microsoft Corporation Local picture identifier and computation of co-located information
US9749642B2 (en) 2014-01-08 2017-08-29 Microsoft Technology Licensing, Llc Selection of motion vector precision
US9774881B2 (en) 2014-01-08 2017-09-26 Microsoft Technology Licensing, Llc Representing motion vectors in an encoded bitstream
US9900603B2 (en) 2014-01-08 2018-02-20 Microsoft Technology Licensing, Llc Selection of motion vector precision
US9942560B2 (en) 2014-10-31 2018-04-10 Microsoft Technology Licensing, Llc Encoding screen capture data

Also Published As

Publication number Publication date Type
JP2962012B2 (en) 1999-10-12 grant
JPH05137130A (en) 1993-06-01 application
US5748784A (en) 1998-05-05 grant

Similar Documents

Publication Publication Date Title
US7310371B2 (en) Method and/or apparatus for reducing the complexity of H.264 B-frame encoding using selective reconstruction
US6271774B1 (en) Picture data processor, picture data decoder and picture data encoder, and methods thereof
US7545863B1 (en) Bidirectionally predicted pictures or video object planes for efficient and flexible video coding
US7453941B1 (en) Moving pictures encoding method and apparatus for detecting a scene change between fields of an interlaced image
US5701164A (en) Macroblock coding including difference between motion vectors
US5737022A (en) Motion picture error concealment using simplified motion compensation
US7324595B2 (en) Method and/or apparatus for reducing the complexity of non-reference frame encoding using selective reconstruction
US5539466A (en) Efficient coding apparatus for picture signal and decoding apparatus therefor
US5917988A (en) Editing apparatus, editing method and decoding apparatus for compressed video signal
US6415055B1 (en) Moving image encoding method and apparatus, and moving image decoding method and apparatus
US5557331A (en) Image encoding method, an image encoding circuit, an image encoding apparatus, and an optical disk
US5386234A (en) Interframe motion predicting method and picture signal coding/decoding apparatus
US20070086515A1 (en) Spatial and snr scalable video coding
US5991445A (en) Image processing apparatus
US20030086622A1 (en) Efficient spatial scalable compression schemes
US6339619B1 (en) Moving picture bitstream conversion apparatus and method thereof
US5561477A (en) System for coding a video signal in the presence of an image intensity gradient
US20050105612A1 (en) Digital video stream decoding method and apparatus
US5453799A (en) Unified motion estimation architecture
US5416522A (en) Motion detection apparatus for moving pictures and encoding and decoding apparatus for picture signals
US5343248A (en) Moving image compressing and recording medium and moving image data encoder and decoder
USRE35158E (en) Apparatus for adaptive inter-frame predictive encoding of video signal
US5883674A (en) Method and apparatus for setting a search range for detecting motion vectors utilized for encoding picture data
EP0598904A1 (en) Apparatus for coding and decoding picture signal with high efficiency
US5708473A (en) Two stage video film compression method and system

Legal Events

Date Code Title Description
FPAY Fee payment

Year of fee payment: 8

FPAY Fee payment

Year of fee payment: 12

AS Assignment

Owner name: JVC KENWOOD CORPORATION, JAPAN

Free format text: MERGER;ASSIGNOR:VICTOR COMPANY OF JAPAN, LTD.;REEL/FRAME:028002/0001

Effective date: 20111001