Transmission device, transmission method of transmission stream, and processing device

• US 9,998,773 B2
• Filed: 05/15/2014
• Issued: 06/12/2018
• Est. Priority Date: 06/07/2013
• Status: Active Grant

• Current Assignee: Saturn Licensing LLC (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Tsukagoshi, Ikuo
• Primary Examiner(s): Masur, Paul H
• Application Number:
  US14/787,586
• Publication Number:
  US 20160112731A1
• Time in Patent Office: 1,489 Days
• CPC Class Codes: H04L 65/611 for multicast or broadcast systems for broadcast or conference H04L12/18; arrangements for broadcast or distribution combined with broadcast H04H20/00; arrangements for broadcast applications with a direct linkage to broadcast information or to broadcast space-time H04H60/00; selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS], H04W4/06
• CPC Class Codes: H04L 65/65 Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
• CPC Class Codes: H04N 21/236 Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream multiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00
• CPC Class Codes: H04N 21/23605 Creation or processing of packetized elementary streams [PES]
• CPC Class Codes: H04N 21/23614 Multiplexing of additional data and video streams arrangements for simultaneous broadcast of plural pieces of information H04H20/28
• CPC Class Codes: H04N 21/23892 involving embedding information at multiplex stream level, e.g. embedding a watermark at packet level
• CPC Class Codes: H04N 21/631 Multimode Transmission, e.g. transmitting basic layers and enhancement layers of the content over different transmission paths or transmitting with different error corrections, different keys or with different transmission protocols
• CPC Class Codes: H04N 21/64322 IP
• CPC Class Codes: H04N 21/8455 involving pointers to the content, e.g. pointers to the I-frames of the video stream
• CPC Class Codes: H04N 21/85406 involving a specific file format, e.g. MP4 format

Abstract

A response time until initial presentation decreases in such cases as reception of a service and reproduction of reception data after accumulation of the reception data.

Identification information based on which a packet handled with priority is identifiable is inserted into each of transmission packets at the time of transmission of a transmission stream containing the transmission packets disposed successively in the transmission stream. For example, each of the transmission packets is a multilayered packet containing a multiplexed transport packet in the uppermost layer. For example, the identification information is inserted into packets in a part or all of layers of each of the multilayered packets.

Claims

1. A transmission device, comprising:

circuitry configured to, for each transmission packet of transmission packets successively disposed in a transmission stream;

determine whether each data packet that is encapsulated in a particular transmission packet has first identification information indicating that the data packet is to be handled with priority;

set second identification information in the particular transmission packet to a first value in a case that at least one data packet that is encapsulated in the particular transmission packet is determined to have the first identification information, the second identification information being disposed outside the data packet, and the first value of the second identification information indicating presence of the first identification information within the particular transmission packet; and

set the second identification information to a second value in a case that no data packet that is encapsulated in the particular transmission packet is determined to have the first identification information, the second value of the second identification information indicating absence of the first identification information within the particular transmission packet; and

a transmitter configured to transmit the transmission stream with the set second identification information.

2. The transmission device according to claim 1, wherein the transmission packet is a multilayered packet containing a multiplexed transport packet in an upper layer.

3. The transmission device according to claim 2, wherein the circuitry is configured to insert the second identification information into packets in a part or all of layers of the transmission packet.

4. The transmission device according to claim 3, wherein the first identification information indicates that the data packet to be handled with priority is a transport packet that contains an access unit for random access of a video.

5. The transmission device according to claim 3, wherein the first identification information indicates that the data packet to be handled with priority is a transport packet that contains an access unit for non-sequential reproduction of a video.

6. The transmission device according to claim 2, wherein the transmission packet encapsulates an IP packet containing the multiplexed transport packet in a payload of the IP packet.

7. The transmission device according to claim 6, wherein the transmission packet is a Type Length Value (TLV) packet or a Generic Stream Encapsulation (GSE) packet.

8. The transmission device according to claim 2, wherein the transmission packet is an IP packet containing the multiplexed transport packet in a payload of the IP packet.

9. The transmission device according to claim 2, wherein the multiplexed transport packet is an MPEG Media Transport (MMT) packet, a Real-time Transport Protocol (RTP) packet, or a File Delivery over Unidirectional Transport protocol (FLUTE) packet.

10. A transmission method for a transmission stream, the method comprising:

for each transmission packet of transmission packets successively disposed in the transmission stream,

determining whether each data packet that is encapsulated in a particular transmission packet has first identification information indicating that the data packet is to be handled with priority,

setting, by circuitry of a transmission device, second identification information in the particular transmission packet to a first value in a case that at least one data packet that is encapsulated in the particular transmission packet is determined to have the first identification information, the second identification information being disposed outside the data packet, and the first value of the second identification information indicating presence of the first identification information within the particular transmission packet, and

setting, by the circuitry of the transmission device, the second identification information to a second value in a case that no data packet that is encapsulated in the particular transmission packet is determined to have the first identification information, the second value of the second identification information indicating absence of the first identification information within the particular transmission packet; and

transmitting, by a transmitter of the transmission device, the transmission stream with the set second identification information.

11. A processing device, comprising:

circuitry configured to;

acquire a transmission stream containing transmission packets successively disposed in the transmission stream;

for each transmission packet of the transmission packets,

determine whether each data packet that is encapsulated in a particular transmission packet has first identification information indicating that the data packet is to be handled with priority,

set second identification information in the particular transmission racket to a first value in a case that at least one data packet that is encapsulated in the particular transmission packet is determined to have the first identification information, the second identification information being disposed outside the data packet, and the first value of the second identification information indicating presence of the first identification information within the particular transmission packet, and

set the second identification information to a second value in a case that no data packet that is encapsulated in the particular transmission packet is determined to have the first identification information, the second value of the second identification information indicating absence of the first identification information within the particular transmission packet; and

a transmitter configured to transmit the transmission stream with the set second identification information.

12. The processing device according to claim 11, wherein

the one of the transmission packets is a multilayered packet containing a multiplexed transport packet in an upper layer, and

the second identification information is inserted into packets in a part or all of layers of the one of the transmission packets.

13. The processing device according to claim 12, wherein the one of the transmission packets is a capsule layer packet obtained by encapsulating an IP packet containing the multiplexed transport packet in a payload of the IP packet.

14. The processing device according to claim 13, wherein the one of the transmission packets is a Type Length Value (TLV) packet or a Generic Stream Encapsulation (GSE) packet.

15. The processing device according to claim 12, wherein the one of the transmission packets is an IP packet containing the multiplexed transport packet in a payload of the IP packet.

16. The processing device according to claim 12, wherein the one of the multiplexed transport packets is an MPEG Media Transport (MMT) packet, a Real-time Transport Protocol (RTP) packet, or a File Delivery over Unidirectional Transport protocol (FLUTE) packet.

17. The processing device according to claim 12, wherein

the circuitry is configured to acquire the transmission stream via a predetermined transmission line, and

the first identification information indicates that the data packet to be handled with priority is a transport packet containing an access unit for random access of a video.

18. The processing device according to claim 17, wherein the predetermined transmission line is an RF transmission line or a communication network transmission line.

19. The processing device according to claim 12, wherein

the circuitry is configured to acquire the transmission stream from an accumulation medium or a server in response to a reproduction command transmitted to the accumulation medium or the server, and

the first identification information indicates that the data packet to be handled with priority is a transport packet containing an access unit for non-sequential reproduction of a video.