Apparatus for transmitting broadcast signal, apparatus for receiving broadcast signal, method for transmitting broadcast signal and method for receiving broadcast signal

• US 11,057,586 B2
• Filed: 04/13/2020
• Issued: 07/06/2021
• Est. Priority Date: 01/02/2015
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kwon, Woosuk
• Primary Examiner(s): Flynn, Randy A
• Application Number:
  US16/847,090
• Publication Number:
  US 20200244921A1
• Time in Patent Office: 449 Days
• CPC Class Codes: H04L 65/00 Network arrangements, protocols or services for supporting real-time applications in data packet communication real-time or near real-time messaging, e.g. instant messaging [IM] H04L51/04; selective video distribution H04N21/00
• CPC Class Codes: H04L 65/61 for supporting one-way streaming services, e.g. Internet radio
• CPC Class Codes: H04L 65/613 for the control of the source by the destination control signals issued by the client directed to the server or network components specially adapted for selective content distribution H04N21/637
• 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: H04L 65/762 at the source reformatting of additional data in video distribution servers H04N21/2355
• CPC Class Codes: H04L 69/00 Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass networks security protocols H04L9/40; wireless communication networks H04W
• CPC Class Codes: H04L 69/04 Protocols for data compression, e.g. ROHC
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers
• CPC Class Codes: H04N 19/46 Embedding additional information in the video signal during the compression process H04N19/517, H04N19/68, H04N19/70 take precedence
• 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 21/2362 Generation or processing of Service Information [SI]
• CPC Class Codes: H04N 21/2381 Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network transmission of MPEG streams over ATM H04L12/5601
• CPC Class Codes: H04N 21/2385 Channel allocation H04N21/266 takes precedence; Bandwidth allocation H04N21/24 takes precedence ; allocation of channels according to the instantaneous demands of the users in time-division multiplex systems H04J3/1682; admission control, resource allocation in open networks H04L12/5692; arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896; negotiating bandwidth in wireless networks H04W28/16
• CPC Class Codes: H04N 21/26258 for generating a list of items to be played back in a given order, e.g. playlist, or scheduling item distribution according to such list retrieval of multimedia data based on playlists G06F16/40
• CPC Class Codes: H04N 21/434 Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream demultiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00
• CPC Class Codes: H04N 21/4882 for displaying messages, e.g. warnings, reminders arrangements for providing short real-time information to substation in data switching networks H04L12/1895
• CPC Class Codes: H04N 21/6125 involving transmission via Internet transmission by internet of broadcast information H04H60/82
• CPC Class Codes: H04N 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006
• CPC Class Codes: H04N 21/64322 IP
• CPC Class Codes: H04N 21/814 comprising emergency warnings arrangements specially adapted for emergency or urgency in broadcast systems H04H20/59; arrangements for providing alarms, notifications, alerts to substation in data switching networks H04L12/1895
• CPC Class Codes: H04N 21/8456 : by decomposing the content in the time domain, e.g. in time segments
• CPC Class Codes: H04N 7/08 : Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band , e.g. by time division H04N7/007 takes precedence

Abstract

A method of transmitting a broadcast signal, includes generating at least one first link layer packet including data packets that include broadcast data in a link layer that is a layer between a physical layer and a network layer, generating at least one second link layer packet including link layer signaling information in the link layer and transmitting the broadcast signal including the at least one first link layer packet and the at least one second link layer packet in the physical layer, wherein a header of the at least one first link layer packet includes packet type information for indicating a packet type of the data packets before being included in the at least first link layer packet, wherein the data packets are Transport Stream (TS) packets or Internet Protocol (IP) packets, and wherein the TS packets are header compressed TS packets or header uncompressed TS packets.

Claims

1. A method of transmitting a broadcast signal, the method comprising:

generating at least one first link layer packet including data packets that include broadcast data in a link layer that is a layer between a physical layer and a network layer;

generating at least one second link layer packet including link layer signaling information in the link layer; and

transmitting the broadcast signal including the at least one first link layer packet and the at least one second link layer packet in the physical layer,

wherein a header of the at least one first link layer packet includes packet type information for indicating a packet type of the data packets before being included in the at least first link layer packet,

wherein the data packets are Transport Stream (TS) packets or Internet Protocol (IP) packets,

wherein the TS packets are header compressed TS packets or header uncompressed TS packets,

wherein the IP packets are header compressed IP packets or header uncompressed IP packets,

wherein the header compression of the TS packets is identified based on an additional header,

wherein the header compression of the IP packets is identified based on the packet type information,

wherein the header of the at least one first link layer packet further includes indication information to indicate whether or not the additional header is present in the at least one first link layer packet in response to the data packets that are the TS packets, and

wherein the additional header includes information to identify whether the header compression is performed on the TS packets.

2. The method of claim 1,

wherein the header of the at least one first link layer packet further includes information to indicate a number of TS packets in the at least one first link layer packet in response to the data packets that are the TS packets.

3. The method of claim 1,

wherein, when the data packets are the TS packets and two or more successive TS packets in a payload of the at least one first link layer packet have sequentially increased continuity counter information and the other TS header information is a same, the header compression is performed by sending a TS header of a first TS packet of the two or more successive TS packets and deleting TS headers of the other TS packets of the two or more successive TS packets.

4. The method of claim 1,

wherein a payload of the at least one first link layer packet includes one of a single IP packet, a segment of the single IP packet, or two or more IP packets, and

wherein the header of the at least one first link layer packet further includes information to identify a configuration of the payload in response to the data packets that are the IP packets.

5. The method of claim 4, wherein, when the payload of the at least one first link layer packet includes the two or more IP packets, the header of the at least one first link layer packet further includes information to indicate a number of IP packets in the at least one first link layer packet.

6. A transmitting system for transmitting a broadcast signal, the transmitting system comprising:

a link layer processor to generate at least one first link layer packet including data packets that include broadcast data and generate at least one second link layer packet including link layer signaling information in a link layer that is a layer between a physical layer and a network layer; and

a physical layer processor to transmit the broadcast signal including the at least one first link layer packet and the at least one second link layer packet in the physical layer,

wherein a header of the at least one first link layer packet includes packet type information for indicating a packet type of the data packets before being included in the at least first link layer packet,

wherein the data packets are Transport Stream (TS) packets or Internet Protocol (IP) packets,

wherein the TS packets are header compressed TS packets or header uncompressed TS packets,

wherein the IP packets are header compressed IP packets or header uncompressed IP packets,

wherein the header compression of the TS packets is identified based on an additional header,

wherein the header compression of the IP packets is identified based on the packet type information,

wherein the header of the at least one first link layer packet further includes indication information to indicate whether or not the additional header is present in the at least one first link layer packet in response to the data packets that are the TS packets, and

wherein the additional header includes information to identify whether the header compression is performed on the TS packets.

7. The transmitting system of claim 6,

wherein the header of the at least one first link layer packet further includes information to indicate a number of TS packets in the at least one first link layer packet in response to the data packets that are the TS packets.

8. The transmitting system of claim 6,

wherein, when the data packets are the TS packets and two or more successive TS packets in a payload of the at least one first link layer packet have sequentially increased continuity counter information and the other TS header information is a same, the link layer processor performs the header compression by sending a TS header of a first TS packet of the two or more successive TS packets and deleting TS headers of the other TS packets of the two or more successive TS packets.

9. The transmitting system of claim 6,

wherein a payload of the at least one first link layer packet includes one of a single IP packet, a segment of the single IP packet, or two or more IP packets, and

wherein the header of the at least one first link layer packet further includes information to identify a configuration of the payload in response to the data packets that are the IP packets.

10. The transmitting system of claim 9,

wherein, when the payload of the at least one first link layer packet includes the two or more IP packets, the header of the at least one first link layer packet further includes information to indicate a number of IP packets in the at least one first link layer packet.

11. A method of receiving a broadcast signal in a receiving system, the method comprising:

receiving the broadcast signal;

demodulating the broadcast signal;

decoding the demodulated broadcast signal; and

processing at least one first link layer packet and at least one second link layer packet from the decoded broadcast signal,

wherein the at least one first link layer packet includes data packets that include broadcast data and the at least one second link layer packet includes link layer signaling information,

wherein a header of the at least one first link layer packet includes packet type information for indicating a packet type of the data packets before being included in the at least first link layer packet in a transmitting system,

wherein the data packets are Transport Stream (TS) packets or Internet Protocol (IP) packets,

wherein the TS packets are header compressed TS packets or header uncompressed TS packets,

wherein the IP packets are header compressed IP packets or header uncompressed IP packets,

wherein the header compression of the TS packets is identified based on an additional header,

wherein the header compression of the IP packets is identified based on the packet type information,

wherein the header of the at least one first link layer packet further includes indication information to indicate whether or not the additional header is present in the at least one first link layer packet in response to the data packets that are the TS packets,

wherein the additional header includes information to identify whether the header compression is performed on the TS packets, and

wherein the processing the at least one first link layer packet further comprises;

performing header decompression on the header compressed TS packets or the header compressed IP packets in the at least one first link layer packet.

12. The method of claim 11,

wherein the header of the at least one first link layer packet further includes information to indicate a number of TS packets in the at least one first link layer packet in response to the data packets that are the TS packets.

13. The method of claim 11,

wherein, when the data packets are the TS packets and two or more successive TS packets in a payload of the at least one first link layer packet have sequentially increased continuity counter information and the other TS header information is a same, the performing the header decompression decompresses TS headers of the other TS packets of the two or more successive TS packets based on a TS header of a first TS packet of the two or more successive TS packets.

14. The method of claim 11, wherein a payload of the at least one first link layer packet includes one of a single IP packet, a segment of the single IP packet, or two or more IP packets, and

wherein the header of the at least one first link layer packet further includes information to identify a configuration of the payload in response to the data packets that are the IP packets.

15. The method of claim 14,

wherein, when the payload of the at least one first link layer packet includes the two or more IP packets, the header of the at least one first link layer packet further includes information to indicate a number of IP packets in the at least one first link layer packet.

16. A receiving system for receiving a broadcast signal, the receiving system comprising:

a tuner to receive the broadcast signal;

a demodulator to demodulate the broadcast signal;

a decoder to decode the demodulated broadcast signal; and

a processor to process at least one first link layer packet and at least one second link layer packet from the decoded broadcast signal,

wherein the at least one first link layer packet includes data packets that include broadcast data and the at least one second link layer packet includes link layer signaling information,

wherein a header of the at least one first link layer packet includes packet type information for indicating a packet type of the data packets before being included in the at least first link layer packet in a transmitting system,

wherein the data packets are Transport Stream (TS) packets or Internet Protocol (IP) packets,

wherein the TS packets are header compressed TS packets or header uncompressed TS packets,

wherein the IP packets are header compressed IP packets or header uncompressed IP packets,

wherein the header compression of the TS packets is identified based on an additional header,

wherein the header compression of the IP packets is identified based on the packet type information,

wherein the header of the at least one first link layer packet further includes indication information to indicate whether or not the additional header is present in the at least one first link layer packet in response to the data packets that are the TS packets,

wherein the additional header includes information to identify whether the header compression is performed on the TS packets, and

wherein the processor further performs header decompression on the header compressed TS packets or the header compressed IP packets in the at least one first link layer packet.

17. The receiving system of claim 16,

wherein the header of the at least one first link layer packet further includes information to indicate a number of TS packets in the at least one first link layer packet in response to the data packets that are the TS packets.

18. The receiving system of claim 16,

wherein, when two or more successive TS packets in a payload of the at least one first link layer packet have sequentially increased continuity counter information and the other TS header information is a same, the processor decompresses TS headers of the other TS packets of the two or more successive TS packets based on a TS header of a first TS packet of the two or more successive TS packets.

19. The receiving system of claim 16,

wherein a payload of the at least one first link layer packet includes one of a single IP packet, a segment of the single IP packet, or two or more IP packets, and

wherein the header of the at least one first link layer packet further includes information to identify a configuration of the payload in response to the data packets that are the IP packets.

20. The receiving system of claim 19, wherein, when the payload of the at least one first link layer packet includes the two or more IP packets, the header of the at least one first link layer packet further includes information to indicate a number of IP packets in the at least one first link layer packet.