Patents by Inventor Akira Fujibayashi
Akira Fujibayashi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10715829Abstract: A moving image encoding/decoding system may include a video predictive encoding device, which may include: an encoding device which encodes each of a plurality of input pictures to generate compressed picture data including a random access picture, and encodes data about display order information of each picture; a restoration device which decodes the compressed picture data to restore a reproduced picture; a picture storage device which stores the reproduced picture as a reference picture; and a memory management device which controls the picture storage device. Following completion of an encoding process of generating the random access picture, the memory management device refreshes the picture storage device by setting every reference picture in the picture storage device, except for the random access picture, as unnecessary immediately before or immediately after encoding a picture with display order information larger than the display order information of the random access picture.Type: GrantFiled: April 5, 2019Date of Patent: July 14, 2020Assignee: NTT DOCOMO, INC.Inventors: Choong Seng Boon, Yoshinori Suzuki, Akira Fujibayashi, Thiow Keng Tan
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Patent number: 10567794Abstract: A moving image encoding/decoding system may include a video predictive encoding device, which may include: an encoding device which encodes each of a plurality of input pictures to generate compressed picture data including a random access picture, and encodes data about display order information of each picture; a restoration device which decodes the compressed picture data to restore a reproduced picture; a picture storage device which stores the reproduced picture as a reference picture; and a memory management device which controls the picture storage device. Following completion of an encoding process of generating the random access picture, the memory management device refreshes the picture storage device by setting every reference picture in the picture storage device, except for the random access picture, as unnecessary immediately before or immediately after encoding a picture with display order information larger than the display order information of the random access picture.Type: GrantFiled: June 28, 2019Date of Patent: February 18, 2020Assignee: NTT DOCOMO, INC.Inventors: Choong Seng Boon, Yoshinori Suzuki, Akira Fujibayashi, Thiow Keng Tan
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Patent number: 10560711Abstract: A video prediction encoding device provided with a picture storage unit storing, as reference pictures to be used for encoding of a subsequent picture, one or more of reconstructed pictures restored from compressed picture data and a memory control unit to control a frame memory in the picture storage unit. When a frame size of input pictures is not more than 1/(2{circumflex over (?)}L) (where L is an integer of one or more) of a maximum frame size of pictures, the memory control unit determines that (2{circumflex over (?)}L) times the maximum number of reconstructed pictures are storable in the frame memory.Type: GrantFiled: September 26, 2018Date of Patent: February 11, 2020Assignee: NTT DOCOMO, INC.Inventors: Akira Fujibayashi, Choong Seng Boon, Thiow Keng Tan
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Patent number: 10511855Abstract: A predictive coding system can encode motion vectors by determining a motion vector of a target partition in a frame picture of an encoding target; determining a first motion vector predictor candidate from a motion vector or motion vectors of one or more partitions belonging to a left-neighboring region to the target partition; determining a second motion vector predictor candidate from a motion vector or motion vectors of one or more partitions belonging to an above-neighboring region to the target partition; selecting an optimum motion vector predictor and outputting motion vector predictor indication information to specify the selected optimum motion vector predictor, the optimum motion vector predictor selected based on comparison between one or more motion vector predictor candidates including the first motion vector predictor candidate and the second motion vector predictor candidate, and the motion vector of the target partition; and encoding the motion vector predictor indication information.Type: GrantFiled: November 7, 2018Date of Patent: December 17, 2019Assignee: NTT DOCOMO, INC.Inventors: Akira Fujibayashi, Yoshinori Suzuki, Choong Seng Boon
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Patent number: 10511856Abstract: A predictive coding system can encode motion vectors by determining a motion vector of a target partition in a frame picture of an encoding target; determining a first motion vector predictor candidate from a motion vector or motion vectors of one or more partitions belonging to a left-neighboring region to the target partition; determining a second motion vector predictor candidate from a motion vector or motion vectors of one or more partitions belonging to an above-neighboring region to the target partition; selecting an optimum motion vector predictor and outputting motion vector predictor indication information to specify the selected optimum motion vector predictor, the optimum motion vector predictor selected based on comparison between one or more motion vector predictor candidates including the first motion vector predictor candidate and the second motion vector predictor candidate, and the motion vector of the target partition; and encoding the motion vector predictor indication information.Type: GrantFiled: November 7, 2018Date of Patent: December 17, 2019Assignee: NTT DOCOMO, INC.Inventors: Akira Fujibayashi, Yoshinori Suzuki, Choong Seng Boon
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Patent number: 10477228Abstract: A video predictive encoding device can include an input device to implement input of pictures constituting a video sequence; an encoder to encode the pictures by intra-prediction or inter-prediction and to encode output order information of each picture and information about a picture type of each picture to generate compressed picture data. The compressed picture data includes a picture to serve as a random access point. The video predictive coding device can also include a reconstruction unit to decode the compressed picture data to reconstruct pictures; a picture storage unit to store one or more of the reconstructed pictures as reference pictures to be used for encoding of a subsequent picture; and a controller to determine the picture type and control the picture storage unit based on the determined picture type. The controller can label each picture as one of following three types: CRA picture, type-1 picture and type-2 picture.Type: GrantFiled: August 20, 2018Date of Patent: November 12, 2019Assignee: NTT DOCOMO, INC.Inventors: Choong Seng Boon, Junya Takiue, Akira Fujibayashi, Thiow Keng Tan
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Publication number: 20190327488Abstract: A moving image encoding/decoding system may include a video predictive encoding device, which may include: an encoding device which encodes each of a plurality of input pictures to generate compressed picture data including a random access picture, and encodes data about display order information of each picture; a restoration device which decodes the compressed picture data to restore a reproduced picture; a picture storage device which stores the reproduced picture as a reference picture; and a memory management device which controls the picture storage device. Following completion of an encoding process of generating the random access picture, the memory management device refreshes the picture storage device by setting every reference picture in the picture storage device, except for the random access picture, as unnecessary immediately before or immediately after encoding a picture with display order information larger than the display order information of the random access picture.Type: ApplicationFiled: June 28, 2019Publication date: October 24, 2019Applicant: NTT DOCOMO, INC.Inventors: Choong Seng Boon, Yoshinori Suzuki, Akira Fujibayashi, Thiow Keng Tan
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Patent number: 10390042Abstract: A moving image encoding/decoding system may include a video predictive encoding device, which may include: an encoding device which encodes each of a plurality of input pictures to generate compressed picture data including a random access picture, and encodes data about display order information of each picture; a restoration device which decodes the compressed picture data to restore a reproduced picture; a picture storage device which stores the reproduced picture as a reference picture; and a memory management device which controls the picture storage device. Following completion of an encoding process of generating the random access picture, the memory management device refreshes the picture storage device by setting every reference picture in the picture storage device, except for the random access picture, as unnecessary immediately before or immediately after encoding a picture with display order information larger than the display order information of the random access picture.Type: GrantFiled: December 7, 2018Date of Patent: August 20, 2019Assignee: NTT DOCOMO, INC.Inventors: Choong Seng Boon, Yoshinori Suzuki, Akira Fujibayashi, Thiow Keng Tan
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Publication number: 20190238885Abstract: A moving image encoding/decoding system may include a video predictive encoding device, which may include: an encoding device which encodes each of a plurality of input pictures to generate compressed picture data including a random access picture, and encodes data about display order information of each picture; a restoration device which decodes the compressed picture data to restore a reproduced picture; a picture storage device which stores the reproduced picture as a reference picture; and a memory management device which controls the picture storage device. Following completion of an encoding process of generating the random access picture, the memory management device refreshes the picture storage device by setting every reference picture in the picture storage device, except for the random access picture, as unnecessary immediately before or immediately after encoding a picture with display order information larger than the display order information of the random access picture.Type: ApplicationFiled: April 5, 2019Publication date: August 1, 2019Applicant: NTT DOCOMO, INC.Inventors: Choong Seng Boon, Yoshinori Suzuki, Akira Fujibayashi, Thiow Keng Tan
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Patent number: 10298953Abstract: A moving image encoding/decoding system may include a video predictive encoding device, which may include: an encoding device which encodes each of a plurality of input pictures to generate compressed picture data including a random access picture, and encodes data about display order information of each picture; a restoration device which decodes the compressed picture data to restore a reproduced picture; a picture storage device which stores the reproduced picture as a reference picture; and a memory management device which controls the picture storage device. Following completion of an encoding process of generating the random access picture, the memory management device refreshes the picture storage device by setting every reference picture in the picture storage device, except for the random access picture, as unnecessary immediately before or immediately after encoding a picture with display order information larger than the display order information of the random access picture.Type: GrantFiled: December 7, 2018Date of Patent: May 21, 2019Assignee: NTT DOCOMO, INCInventors: Choong Seng Boon, Yoshinori Suzuki, Akira Fujibayashi, Thiow Keng Tan
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Publication number: 20190116378Abstract: A moving image encoding/decoding system may include a video predictive encoding device, which may include: an encoding device which encodes each of a plurality of input pictures to generate compressed picture data including a random access picture, and encodes data about display order information of each picture; a restoration device which decodes the compressed picture data to restore a reproduced picture; a picture storage device which stores the reproduced picture as a reference picture; and a memory management device which controls the picture storage device. Following completion of an encoding process of generating the random access picture, the memory management device refreshes the picture storage device by setting every reference picture in the picture storage device, except for the random access picture, as unnecessary immediately before or immediately after encoding a picture with display order information larger than the display order information of the random access picture.Type: ApplicationFiled: December 7, 2018Publication date: April 18, 2019Applicant: NTT DOCOMO, INC.Inventors: Choong Seng Boon, Yoshinori Suzuki, Akira Fujibayashi, Thiow Keng Tan
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Publication number: 20190110069Abstract: A moving image encoding/decoding system may include a video predictive encoding device, which may include: an encoding device which encodes each of a plurality of input pictures to generate compressed picture data including a random access picture, and encodes data about display order information of each picture; a restoration device which decodes the compressed picture data to restore a reproduced picture; a picture storage device which stores the reproduced picture as a reference picture; and a memory management device which controls the picture storage device. Following completion of an encoding process of generating the random access picture, the memory management device refreshes the picture storage device by setting every reference picture in the picture storage device, except for the random access picture, as unnecessary immediately before or immediately after encoding a picture with display order information larger than the display order information of the random access picture.Type: ApplicationFiled: December 7, 2018Publication date: April 11, 2019Applicant: NTT DOCOMO, INC.Inventors: Choong Seng Boon, Yoshinori Suzuki, Akira Fujibayashi, Thiow Keng Tan
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Publication number: 20190110065Abstract: A predictive coding system can encode motion vectors by determining a motion vector of a target partition in a frame picture of an encoding target; determining a first motion vector predictor candidate from a motion vector or motion vectors of one or more partitions belonging to a left-neighboring region to the target partition; determining a second motion vector predictor candidate from a motion vector or motion vectors of one or more partitions belonging to an above-neighboring region to the target partition; selecting an optimum motion vector predictor and outputting motion vector predictor indication information to specify the selected optimum motion vector predictor, the optimum motion vector predictor selected based on comparison between one or more motion vector predictor candidates including the first motion vector predictor candidate and the second motion vector predictor candidate, and the motion vector of the target partition; and encoding the motion vector predictor indication information.Type: ApplicationFiled: November 7, 2018Publication date: April 11, 2019Applicant: NTT DOCOMO, INC.Inventors: Akira Fujibayashi, Yoshinori Suzuki, Choong Seng Boon
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Publication number: 20190075316Abstract: A predictive coding system can encode motion vectors by determining a motion vector of a target partition in a frame picture of an encoding target; determining a first motion vector predictor candidate from a motion vector or motion vectors of one or more partitions belonging to a left-neighboring region to the target partition; determining a second motion vector predictor candidate from a motion vector or motion vectors of one or more partitions belonging to an above-neighboring region to the target partition; selecting an optimum motion vector predictor and outputting motion vector predictor indication information to specify the selected optimum motion vector predictor, the optimum motion vector predictor selected based on comparison between one or more motion vector predictor candidates including the first motion vector predictor candidate and the second motion vector predictor candidate, and the motion vector of the target partition; and encoding the motion vector predictor indication information.Type: ApplicationFiled: November 7, 2018Publication date: March 7, 2019Applicant: NTT DOCOMO, INC.Inventors: Akira Fujibayashi, Yoshinori Suzuki, Choong Seng Boon
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Publication number: 20190028730Abstract: A video prediction encoding device provided with a picture storage unit storing, as reference pictures to be used for encoding of a subsequent picture, one or more of reconstructed pictures restored from compressed picture data and a memory control unit to control a frame memory in the picture storage unit. When a frame size of input pictures is not more than 1/(2?L) (where L is an integer of one or more) of a maximum frame size of pictures, the memory control unit determines that (2?L) times the maximum number of reconstructed pictures are storable in the frame memory.Type: ApplicationFiled: September 26, 2018Publication date: January 24, 2019Inventors: Akira FUJIBAYASHI, Choong Seng BOON, Thiow Keng TAN
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Patent number: 10178407Abstract: A moving image encoding/decoding system may include a video predictive encoding device, which may include: an encoding device which encodes each of a plurality of input pictures to generate compressed picture data including a random access picture, and encodes data about display order information of each picture; a restoration device which decodes the compressed picture data to restore a reproduced picture; a picture storage device which stores the reproduced picture as a reference picture; and a memory management device which controls the picture storage device. Following completion of an encoding process of generating the random access picture, the memory management device refreshes the picture storage device by setting every reference picture in the picture storage device, except for the random access picture, as unnecessary immediately before or immediately after encoding a picture with display order information larger than the display order information of the random access picture.Type: GrantFiled: August 10, 2015Date of Patent: January 8, 2019Assignee: NTT DOCOMO, INCInventors: Choong Seng Boon, Yoshinori Suzuki, Akira Fujibayashi, Thiow Keng Tan
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Publication number: 20190007694Abstract: A video predictive encoding device can include an input device to implement input of pictures constituting a video sequence; an encoder to encode the pictures by intra-prediction or inter-prediction and to encode output order information of each picture and information about a picture type of each picture to generate compressed picture data. The compressed picture data includes a picture to serve as a random access point. The video predictive coding device can also include a reconstruction unit to decode the compressed picture data to reconstruct pictures; a picture storage unit to store one or more of the reconstructed pictures as reference pictures to be used for encoding of a subsequent picture; and a controller to determine the picture type and control the picture storage unit based on the determined picture type. The controller can label each picture as one of following three types: CRA picture, type-1 picture and type-2 picture.Type: ApplicationFiled: August 20, 2018Publication date: January 3, 2019Inventors: Choong Seng Boon, Junya Takiue, Akira Fujibayashi, Thiow Keng Tan
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Patent number: 10154280Abstract: A predictive coding system can encode motion vectors by determining a motion vector of a target partition in a frame picture of an encoding target; determining a first motion vector predictor candidate from a motion vector or motion vectors of one or more partitions belonging to a left-neighboring region to the target partition; determining a second motion vector predictor candidate from a motion vector or motion vectors of one or more partitions belonging to an above-neighboring region to the target partition; selecting an optimum motion vector predictor and outputting motion vector predictor indication information to specify the selected optimum motion vector predictor, the optimum motion vector predictor selected based on comparison between one or more motion vector predictor candidates including the first motion vector predictor candidate and the second motion vector predictor candidate, and the motion vector of the target partition; and encoding the motion vector predictor indication information.Type: GrantFiled: January 16, 2018Date of Patent: December 11, 2018Assignee: NTT DOCOMO, INC.Inventors: Akira Fujibayashi, Yoshinori Suzuki, Choong Seng Boon
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Patent number: 10116956Abstract: A video prediction encoding device provided with a picture storage unit storing, as reference pictures to be used for encoding of a subsequent picture, one or more of reconstructed pictures restored from compressed picture data and a memory control unit to control a frame memory in the picture storage unit. When a frame size of input pictures is not more than 1/(2^L) (where L is an integer of one or more) of a maximum frame size of pictures, the memory control unit determines that (2^L) times the maximum number of reconstructed pictures are storable in the frame memory.Type: GrantFiled: October 25, 2017Date of Patent: October 30, 2018Assignee: NTT DOCOMO, INC.Inventors: Akira Fujibayashi, Choong Seng Boon, Thiow Keng Tan
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Patent number: 10075724Abstract: A video predictive encoding device can include an input device to implement input of pictures constituting a video sequence; an encoder to encode the pictures by intra-prediction or inter-prediction and to encode output order information of each picture and information about a picture type of each picture to generate compressed picture data. The compressed picture data includes a picture to serve as a random access point. The video predictive coding device can also include a reconstruction unit to decode the compressed picture data to reconstruct pictures; a picture storage unit to store one or more of the reconstructed pictures as reference pictures to be used for encoding of a subsequent picture; and a controller to determine the picture type and control the picture storage unit based on the determined picture type. The controller can label each picture as one of following three types: CRA picture, type-1 picture and type-2 picture.Type: GrantFiled: December 26, 2014Date of Patent: September 11, 2018Assignee: NTT DOCOMO, INC.Inventors: Choong Seng Boon, Junya Takiue, Akira Fujibayashi, Thiow Keng Tan