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

• US 9,924,207 B2
• Filed: 10/20/2014
• Issued: 03/20/2018
• Est. Priority Date: 10/28/2013
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kwon, Woosuk, Oh, Sejin, Ko, Woosuk, Hong, Sungryong, Moon, Kyoungsoo
• Primary Examiner(s): Yeung, Mang
• Assistant Examiner(s): Solinsky, Peter G
• Application Number:
  US14/914,930
• Publication Number:
  US 20160212457A1
• Time in Patent Office: 1,247 Days
• Field of Search: 370321
• CPC Class Codes: H04L 12/1877 Measures taken prior to transmission
• CPC Class Codes: H04L 12/1886 with traffic restrictions for efficiency improvement, e.g. involving subnets or subdomains
• 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 21/2383 Channel coding or modulation of digital bit-stream, e.g. QPSK modulation arrangements for detecting or preventing errors in the information received by adapting the channel coding H04L1/0009; analogue front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• 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 21/64322 IP
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services

Abstract

The present invention provides a method of transmitting broadcast signals. The method includes, generating input packets including broadcast content data; generating a link layer packet by using the generated input packets, wherein the link layer packet includes a link layer header and a link layer payload including the generated input packets, wherein the link layer header includes a count field indicating number of the input packets included in the link layer payload, wherein the link layer header further includes a length part, wherein the length part includes a plurality of length fields as many as that the count field indicates, wherein each of the length fields indicates length of the each input packets included in the link layer payload; generating a broadcast signal including the generated link layer packet; and transmitting the broadcast signal.

Claims

1. A method of transmitting broadcast signals by an apparatus for transmitting broadcast signals, the method comprising:

receiving input packets including broadcast data;

generating a link layer packet using the input packets, wherein the link layer packet includes a link layer header and a link layer payload including data of the input packets,

wherein the link layer header includes a packet type field indicating type of the data of the input packets in the link layer payload,

wherein when the packet type field indicates that the input packets are IP (Internet Protocol) packets, the link layer header further includes a packet configuration field indicating whether the link layer payload includes a segment of one input packet or a plurality of concatenated input packets,

wherein when the link layer payload includes the segment of the one input packet, the link layer header further includes a segmentation information part, wherein the segmentation information part includes a segment sequence number field indicating an order of the segment carried in the link layer packet,

wherein when the link layer payload includes the plurality of concatenated input packets, the link layer header further includes a concatenation information part, wherein the concatenation information part includes a count field indicating a number of the input packets included in the link layer packet; and

transmitting the generated link layer packet.

2. The method of claim 1,

wherein the concatenation information part further includes a length part,

wherein the length part includes length fields based on a value of the count field,

wherein the each length field indicates a length of each of the input packets, and

wherein the length fields are included in the same order as the input packets present in the link layer payload.

3. The method of claim 2,

wherein the packet configuration field is followed by the count field, wherein the count field is followed by the length part.

4. The method of claim 1,

wherein the packet type field indicates that the input packet is one of IPv4 packet, a compressed IP packet and a MPEG-2 TS packet.

5. The method of claim 1,

wherein the segmentation information part further includes a last segment field indicating whether the segment in the link layer payload is last segment of the one input packet.

6. An apparatus for transmitting broadcast signals, the apparatus comprising:

a hardware processor configured to receive first module for receiving input packets including broadcast data,

wherein the processor is further configured to generate a link layer packet using the input packets, wherein the link layer packet includes a link layer header and a link layer payload including data of the input packets,

wherein the link layer header includes a packet type field indicating type of the data of the input packets in the link layer payload,

wherein when the packet type field indicates that the input packets are IP (Internet Protocol) packets, the link layer header further includes a packet configuration field indicating whether the link layer payload includes a segment of one input packet or a plurality of concatenated input packets,

wherein when the link layer payload includes the segment of the one input packet, the link layer header further includes a segmentation information part, wherein the segmentation information part includes a segment sequence number field indicating an order of the segment carried in the link layer packet,

wherein when the link layer payload includes the plurality of concatenated input packets, the link layer header further includes a concatenation information part, wherein the concatenation information part includes wherein the link layer header includes a count field indicating a number of the input packets included in the link layer packet; and

a broadcast transmitter configured to transmit the generated link layer packet.

7. The apparatus of claim 6,

wherein the concatenation information part further includes a length part,

wherein the length part includes length fields based on a value of the count field,

wherein the each length field indicates a length of each of the input packets, and

wherein the length fields are included in the same order as the input packets present in the link layer payload.

8. The apparatus of claim 7,

wherein the packet configuration field is followed by the count field, wherein the count field is followed by the length part.

9. The apparatus of claim 6,

wherein the packet type field indicates that the input packet is one of IPv4 packet, a compressed IP packet and a MPEG-2 TS packet.

10. The apparatus of claim 6,

wherein the segmentation information part further includes a last segment field indicating whether the segment in the link layer payload is last segment of the one input packet.