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61. 发明专利

JPH05347710A 失效
公开(公告)号：JPH05347710A
公开(公告)日：1993-12-27
申请号：JP15546892
申请日：1992-06-15
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TAKASHIMA YOICHI , WATANABE YUTAKA , KODERA HIROSHI
IPC分类号： H03M7/30 , G06T9/00 , H03M7/40 , H04N1/41 , H04N19/13 , H04N19/136 , H04N19/14 , H04N19/142 , H04N19/159 , H04N19/176 , H04N19/196 , H04N19/46 , H04N19/60 , H04N19/625 , H04N19/65 , H04N19/70 , H04N19/87 , H04N19/89 , H04N19/895 , H04N19/91 , H04N19/93 , G06F15/66 , H04N7/133
摘要： PURPOSE:To reduce the mismatching and to improve the coding efficiency by assigning adaptively a variable length code to the change of distribution of an orthogonal conversion efficiency. CONSTITUTION:A scan converter 21 applies a zigzag scan to the orthogonal conversion coefficient which is inputted to a variable length coding part 20 and quantized by an adaptive quantizing part 12. Thus a set Sj (j=1, 2,...N) of the continuous number of a zero coefficient and the non-zero coefficient value is obtained. At the same time, non-zero coefficient counter 22 obtains the unit number N of the non-zero coefficient out of a block. Then a coding control part 23 switches the changeover switches 25-27 in accordance with the unit number N. Meanwhile the set Sj outputted from the converter 21 is inputted to a O-run/non-zero coefficient coder 28i (i=1, 2,...m) corresponding to the unit number N via the changeover switch 25. The coder 28i contains a variable length code vlci and codes the set Si of the continuous number of the zero coefficien and the non-zero coefficient value.

62. 发明专利

JPH03290769A PARAMETER DECIDING METHOD FOR ENLARGING/REDUCING AND PARALLELLY MOVING PICTURE 失效
公开(公告)号：JPH03290769A
公开(公告)日：1991-12-20
申请号：JP9209390
申请日：1990-04-09
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KAMIKURA KAZUTO , WATANABE YUTAKA
IPC分类号： H04N19/50 , G06T7/20 , H04N19/42 , H04N19/423 , H04N19/51 , H04N19/513 , H04N19/527
摘要： PURPOSE:To prevent error from being generated when including local movement excepting for enlargement/reduction and parallel movement by estimating a parameter by using a partial motion vector, repeating the estimation while changing this motion vector and defining the estimated value with the highest frequency as the parameter of the picture. CONSTITUTION:Parameters 26-28 are estimated by using partial vectors 7 and 17 in plural motion vectors 6 for the unit of a block, and the parameters 26-28 are repeatedly estimated while changing these motion vectors 7 and 17 to be used. Namely, a sum of products calculation circuit 25 calculates the sum of products, and the parameters 26-28 are outputted to express the enlargement/ reduction of the picture, the parallel horizontal movement of the picture and the parallel vertical movement of the picture, and inputted to parameter decision circuit 29-31. Then, values 32-34 with the highest frequency of appearance are outputted as the parameters of the entire picture. Thus, the respective parameters can be accurately calculated even when including any special movement excepting for the enlargement/reduction and parallel movement of the picture.

63. 发明专利

JPH03289788A VARIABLE RATE IMAGE CODING SYSTEM 失效
公开(公告)号：JPH03289788A
公开(公告)日：1991-12-19
申请号：JP8913990
申请日：1990-04-05
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TANAKA TOMOAKI , KASAHARA HISATSUGU , WATANABE YUTAKA , MANABE KATSUTOSHI , TONOMURA YOSHINOBU , SHIWA SHINICHI
IPC分类号： H04N19/102 , H03M7/30 , H04N1/41 , H04N11/04 , H04N19/164 , H04N19/33 , H04N19/423 , H04N19/426 , H04N19/503 , H04N19/593 , H04N19/60 , H04N19/61 , H04N19/625 , H04N19/65 , H04N19/91
摘要： PURPOSE:To vary a bit rate based on a request from a reception side as always performing coding with a constant method by providing a transmission side from where an orthogonal transform coefficient coded to an arbitrary hierarchy is transmitted to the reception side, and the reception side where an output moving image signal from an inversely quantized orthogonal transform coefficient can be obtained. CONSTITUTION:At the transmission side, ordinary orthogonal transformation is performed at an orthogonal transform processing part 3, and the coefficient is made into a hierarchy at every single or plural transform coefficients quantized at a quantization part 4 by a hierarchy making part 14, and is coded at a variable length coding part 5. A transmission control part 18 which transmits the orthogonal transform coefficient coded to the arbitrary hierarchy to the reception side replying to the request from the reception side, and a reception control part 19 which couples transmitted code information and transmits the coefficient to a variable complexing part 9 by attaching the code information in accordance with the coefficient representing no change on a part where insufficient transform coefficients exist at the reception side are provided. Therefore, the difference of the contents of frame memory at the transmission side and the reception side can be permitted. In such a way, it is possible to vary the bit rate based on the request from the reception side as always performing constant coding.

64. 发明专利

JPH03265392A MOVING PICTURE CODING SYSTEM 失效
公开(公告)号：JPH03265392A
公开(公告)日：1991-11-26
申请号：JP6281090
申请日：1990-03-15
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TANAKA TOMOAKI , KASAHARA HISATSUGU , WATANABE YUTAKA , MANABE KATSUTOSHI , TONOMURA YOSHINOBU , SHIWA SHINICHI
IPC分类号： H04N5/232 , H04N7/15 , H04N11/04 , H04N11/08 , H04N11/24 , H04N19/00 , H04N19/102 , H04N19/103 , H04N19/136 , H04N19/137 , H04N19/142 , H04N19/147 , H04N19/167 , H04N19/179 , H04N19/189 , H04N19/196 , H04N19/423 , H04N19/46 , H04N19/503 , H04N19/60 , H04N19/61 , H04N19/70 , H04N19/91
摘要： PURPOSE:To reduce code quantity by using a signal stored in a frame memory giving a most similar signal among signals in plural frame memories so as to apply coding based on a difference signal of a frame memory to be coded. CONSTITUTION:Plural memories 2-1 to 2-3 storing plural scenes are provided to both a transmission side and a reception side, and a same referenced picture is inputted in advance respectively. Then the transmission side picture discrimination section 14 judges to which scene stored in the frame memories 2-1 to 2-3 an inputted moving picture signal M1 is similar, uses a frame memory giving the similar scene for coding and informs a frame memory section signal S representing which frame memory is selected to the reception side via a frame memory section signal line 15. Thus, when plural scenes are sent alternately, the increase in the coding information quantity when the scene is changed is suppressed.

65. 发明专利

JPH03125273A PICTURE INTERPOLATION METHOD 失效
公开(公告)号：JPH03125273A
公开(公告)日：1991-05-28
申请号：JP26423289
申请日：1989-10-09
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： WATANABE YUTAKA , KAMIKURA KAZUTO
IPC分类号： H04N1/393 , G06T3/40
摘要： PURPOSE:To reduce computed variable by shifting the picture elements of the upper and lower lines to obtain the differential absolute value or an error standard like a double error, etc., and calculating an interpolation signal from the decided shift value. CONSTITUTION:The upper line data 1 and the lower line data 2 are inputted to a shift error calculation circuit 3. The shift error data 4 - 8 obtained by the circuit 3 are inputted to an error comparison error calculation circuit 9. The shift value 10 obtained by the circuit 9 per line is inputted to an interpolation signal calculation circuit 11 together with both data 1 and 2. Then an interpolation signal is calculated. Under such conditions, the picture element values of the upper and lower lines are shifted in some different ways for calculation of the differential absolute value or an error standard like a double error, etc. Then the shift value which produces the minimum error is decided as the local horizontal shift value 10. As a result, the computed variable is reduced.

66. 发明专利

JPH02131697A HIGH EFFICIENCY STEREO MOVING PICTURE ENCODING SYSTEM 失效
公开(公告)号：JPH02131697A
公开(公告)日：1990-05-21
申请号：JP28607688
申请日：1988-11-12
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： WATANABE YUTAKA , IZUMIOKA IKUAKI
IPC分类号： H04N19/50 , H04N13/02 , H04N19/102 , H04N19/136 , H04N19/176 , H04N19/186 , H04N19/196 , H04N19/423 , H04N19/46 , H04N19/503 , H04N19/507 , H04N19/51 , H04N19/59 , H04N19/593 , H04N19/597 , H04N19/60 , H04N19/61 , H04N19/625 , H04N19/70 , H04N19/85 , H04N19/91 , H04N19/93 , H04N19/94
摘要： PURPOSE:To attain efficient encoding by using parallax vector information between left and right pictures for moving vector information used for prediction between moving compensation frames. CONSTITUTION:Inputted left/right pictures 1, 2 are subjected to movement compensation inter-frame prediction by movement compensation inter-frame prediction circuits 3, 4 and the information only of a moving part in the left/right picture is extracted. For example, if a person in a still background as an object is moved, the surrounding of the person or the inside is extracted as movement compensation inter-frame difference signals 5, 6. Thus, parallax compensation prediction is applied to a moving region only and the information to be encoded is reduced.

67. 发明专利

JPH02126788A PLURAL STEREO MOVING-IMAGE ENCODING TRANSMISSION SYSTEM 失效
公开(公告)号：JPH02126788A
公开(公告)日：1990-05-15
申请号：JP28170088
申请日：1988-11-07
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： WATANABE YUTAKA , IZUMIOKA IKUAKI
IPC分类号： H04N19/00 , H04N13/00 , H04N13/02 , H04N19/122 , H04N19/132 , H04N19/136 , H04N19/139 , H04N19/149 , H04N19/172 , H04N19/176 , H04N19/189 , H04N19/192 , H04N19/196 , H04N19/33 , H04N19/46 , H04N19/50 , H04N19/503 , H04N19/51 , H04N19/527 , H04N19/59 , H04N19/597 , H04N19/61 , H04N19/625 , H04N19/70 , H04N19/85
摘要： PURPOSE:To guarantee a picture quality at not less than a constant value, and to effectively utilize a transmission channel by executing the simultaneous encoding transmission of plural stereo moving image in an asynchronous transmission mode, and controlling the characteristics of the respective stereo moving image encoders step-wise. CONSTITUTION:A hierarchy transmission control parameter determined by a hierarchy control optimal circuit 23 is inputted to hierarchy transmission control circuits 17 and 18. In the hierarchy transmission control circuits 17 and 18, two pieces of hierarchy encoding information 08 to 10 are separated to indispensable encoding information and additional encoding information, and the maximum value of the hierarchy to be transmitted in the additional encoding information is applied by a hierarchy control parameters 15 and 16. Two pieces of hierarchy transmission information 19 and 20 are inputted to a multiplexing circuit 21 together with hierarchy control parameters 15 and 16. The information arranged in the multiplexing circuit 21 is transmitted to a decoder on a receiving side with the use of an asynchronous transmission mode transmission path 22.

68. 发明专利

JPH02100591A PARALLAX COMPENSATING METHOD 失效
公开(公告)号：JPH02100591A
公开(公告)日：1990-04-12
申请号：JP25191988
申请日：1988-10-07
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： IZUMIOKA NARIAKI , WATANABE YUTAKA
IPC分类号： G03B35/08 , G06T1/00 , G06T7/00 , H04N13/02 , H04N19/423 , H04N19/50 , H04N19/597 , H04N19/60 , H04N19/90
摘要： PURPOSE:To prevent the increase of a parallax forecast error due to the distortion of a left and a right pictures by performing the retrieval of the block of the highest degree of approximation for a block in which the means value of the block is subtracted from each picture element when the block of the highest degree of approximation is retrieved in parallax compensation at the time to compress the information quantity of a stereoscopic picture. CONSTITUTION:The block for which motion compensation is intended to perform is selected from a left camera present frame memory 11, and is sent to a mean value separation circuit 14. In this circuit 14, the mean value Vac of the luminance of each picture element of the block is calculated, and further, the block V'c from whose each picture element the mean value of each block is subtracted is sent to a motion compensation circuit 15. In the motion compensation circuit 15, the block V'f to be retrieved and the block V'c are compared. Henceforth, the block V'f to be retrieved is calculated successively, and is compared with V'c, and the block V'fmim whose evaluated value EV is minimum is selected by an evaluated value comparison circuit 16. Accordingly, since the block of the higher degree of approximation is selected, a correct forecast picture can be generated.

69. 发明专利

JPH01194756A ADAPTIVE VECTOR QUANTIZING METHOD 失效
公开(公告)号：JPH01194756A
公开(公告)日：1989-08-04
申请号：JP1926488
申请日：1988-01-29
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： WATANABE YUTAKA , SUZUKI YUTAKA
IPC分类号： H04N1/413 , G06T9/00 , H03M7/30 , H04N1/41 , H04N19/00 , H04N19/126 , H04N19/136 , H04N19/154 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/70 , H04N19/94
摘要： PURPOSE:To attach capacity to switch cord book size adaptively by performing Gain/Shape vector quantization by designating the cord book size to which a cord book vector belongs by the amplitude of an input vector. CONSTITUTION:The input vector from a terminal 1 is inputted to a reference deviation calculation circuit 2, and the reference deviation of a signal included in the vector is calculated. Corresponding to the reference deviation, the cord book size is limited to several kinds at a circuit 3. The lower limit and upper limit information of the cord book size are selected from each cord book in a cord book group 4, and are delivered to an inner product arithmetic circuit 5. At the inner product arithmetic circuit 5, the inner product of the input vector and the Shape vector in the cord book is calculated, and its output is inputted to a selection and decision circuit 6, then, information to be transmitted is decided. The information is variable length-encoded at a variable length encoder circuit 7 comprehensively.

70. 发明专利

JPS63191489A NONLINEAR QUANTIZATION PROCESSING SYSTEM FOR TELEVISION LUMINANCE SIGNAL 失效
公开(公告)号：JPS63191489A
公开(公告)日：1988-08-08
申请号：JP2376687
申请日：1987-02-04
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KONDO KIMIHISA , OTSUKA SAKUICHI , WATANABE YUTAKA
IPC分类号： H04N19/00 , H04N19/423 , H04N19/85
摘要： PURPOSE:To make quantization noise inconspicuous even when the number of quantization levels is decreased by utilizing logarithmic variation in human sensation with brightness, and determining electric quantization characteristics of a video signal so that steps of the brightness of a reproduced image are at logarithmically equal intervals. CONSTITUTION:The electric quantization characteristics of the video signal are so determined that reproduced brightness steps are at logarithmically equal intervals including the influence of tube surface reflection caused by background light, etc. Namely, when a luminance signal after gamma correction is quantized by (m) gradations, the quantization characteristics are so determined that D0>Dm-1 holds and there are >=1 (i)th quantization step width (0

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