公开(公告)号：US20180027285A1

公开(公告)日：2018-01-25

申请号：US15550043

申请日：2016-02-18

Applicant: NEC CORPORATION

Inventor： Kensuke SHIMOFURE ,  Yasuhisa NAKATA

IPC: H04N21/434 ,  H04N5/44

CPC classification number: H04N21/4341 ,  H04N5/4401 ,  H04N21/43 ,  H04N21/4302 ,  H04N21/434 ,  H04N21/6112 ,  H04N21/64322

Abstract: [Problem] To provide: a decoding device that decodes and replays, at a suitable timing, sequentially transmitted information; a reception device; a transmission device; a transmission/reception system; a decoding method; and a storage medium having a decoding program stored therein. [Solution] A decoding unit 21 that decodes packets sent from a transmission device 10. A decoding timing determination unit 22 determines the timing that the decoding unit 21 decodes packets, on the basis of adjustment information that is included in the packet and corresponds to time adjustment for making Coordinated Universal Time approach Universal Time. A packet includes processing interval information indicating the processing interval for an access unit being a set including the packet. The decoding timing determination unit 22 determines that packets constituting each access unit will be sequentially decoded at an interval corresponding to the interval indicated by the processing interval information, if the adjustment information indicates that a time adjustment will occur.

公开(公告)号：US20180332337A1

公开(公告)日：2018-11-15

申请号：US16031736

申请日：2018-07-10

Applicant: NEC CORPORATION

Inventor： Kensuke SHIMOFURE ,  Yasuhisa NAKATA

IPC: H04N21/434 ,  H04N21/43 ,  H04N21/61 ,  H04N5/44 ,  H04N21/643

CPC classification number: H04N21/4341 ,  H04N5/4401 ,  H04N21/43 ,  H04N21/4302 ,  H04N21/434 ,  H04N21/6112 ,  H04N21/64322

Abstract: A method for receiving data, the method includes receiving a plurality of assets, each asset including a Media Processing Unit (MPU); receiving a packet identification for each asset among the plurality of assets via respective Moving Picture Experts Group (MPEG) Media Transport Protocol (MMTP) packets; receiving a time stamp information referencing UTC (Coordinated Universal Time) in the MPU, the time stamp information representing a presentation time of a first access unit in presentation order in the MPU; and receiving a leap second insertion flag indicating when a leap second will be inserted, and receiving a leap second deletion flag indicating when a leap second will be deleted, the leap second insertion flag and the leap second deletion flag indicating a presence of a leap second event, wherein the first access unit in the MPU is presented at the time signaled in reference to the time stamp information.

公开(公告)号：US20180014060A1

公开(公告)日：2018-01-11

申请号：US15550054

申请日：2016-02-18

Applicant: NEC Corporation

Inventor： Kensuke SHIMOFURE ,  Yasuhisa NAKATA

IPC: H04N21/434 ,  H04N21/61 ,  H04N21/643 ,  H04N21/845

CPC classification number: H04N21/434 ,  H04N21/43 ,  H04N21/4302 ,  H04N21/4341 ,  H04N21/6112 ,  H04N21/64322 ,  H04N21/8456

Abstract: [Problem] To provide: a decoding device that decodes and replays, in a suitable order, sequentially transmitted information; a reception device; a transmission/reception system; a decoding method; and a storage medium having the decoding program stored therein. [Solution] A decoding unit 21 that decodes packets sent from a transmission device 10. A decoding order determination unit 22 determines the order of packets to be decoded by the decoding unit 21, on the basis of adjustment information that is included in the packet and corresponds to a time adjustment for making Coordinated Universal Time approach Universal Time. The packets include order information indicating the order in the same IP data flow. The decoding order determination unit 22 determines, on the basis of the order information, the order of packets to be decoded by the decoding unit 21, if the adjustment information indicates that a time adjustment will occur.

公开(公告)号：US20200221160A1

公开(公告)日：2020-07-09

申请号：US16824793

申请日：2020-03-20

Applicant: NEC CORPORATION

Inventor： Kensuke SHIMOFURE ,  Yasuhisa NAKATA

IPC: H04N21/434 ,  H04N21/43 ,  H04N21/845 ,  H04N21/643 ,  H04N21/61

Abstract: [Problem] To provide: a decoding device that decodes and replays, in a suitable order, sequentially transmitted information; a reception device; a transmission/reception system; a decoding method; and a storage medium having the decoding program stored therein. [Solution] A decoding unit 21 that decodes packets sent from a transmission device 10. A decoding order determination unit 22 determines the order of packets to be decoded by the decoding unit 21, on the basis of adjustment information that is included in the packet and corresponds to a time adjustment for making Coordinated Universal Time approach Universal Time. The packets include order information indicating the order in the same IP data flow. The decoding order determination unit 22 determines, on the basis of the order information, the order of packets to be decoded by the decoding unit 21, if the adjustment information indicates that a time adjustment will occur.

公开(公告)号：US20200059688A1

公开(公告)日：2020-02-20

申请号：US16662135

申请日：2019-10-24

Applicant: NEC CORPORATION

Inventor： Kensuke SHIMOFURE ,  Yasuhisa NAKATA

IPC: H04N21/434 ,  H04N5/44 ,  H04N21/643 ,  H04N21/61 ,  H04N21/43

Abstract: A method for receiving data, the method includes receiving a plurality of assets, each asset including a Media Processing Unit (MPU); receiving a packet identification for each asset among the plurality of assets via respective Moving Picture Experts Group (MPEG) Media Transport Protocol (MMTP) packets; receiving a time stamp information referencing UTC (Coordinated Universal Time) in the MPU, the time stamp information representing a presentation time of a first access unit in presentation order in the MPU; and receiving a leap second insertion flag indicating when a leap second will be inserted, and receiving a leap second deletion flag indicating when a leap second will be deleted, the leap second insertion flag and the leap second deletion flag indicating a presence of a leap second event, wherein the first access unit in the MPU is presented at the time signaled in reference to the time stamp information.