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

Patent metadata

Field	Value
Publication number	US-10033479-B2
Application number	US-201514839172-A
Country	US
Kind code	B2
Filing date	Aug 28, 2015
Priority date	Dec 31, 2014
Publication date	Jul 24, 2018
Grant date	Jul 24, 2018

Abstract

A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals, the apparatus comprises an input formatter to input format service data, an encoder to encode the input formatted service data, a frame builder to build at least one signal frame including the encoded service data, wherein the at least one signal frame includes a plurality of OFDM symbols, a modulator to modulate data in the built at least one signal frame by an OFDM (Orthogonal Frequency Division Multiplex) scheme and a transmitter to transmit the broadcast signals having the modulated data.

First claim

What is claimed is:

1. A method for transmitting broadcast signals, the method comprising:
encapsulating at least one Transport Stream (TS) packet to output at least one link layer packet,
wherein the encapsulating includes a header deletion for the at least one TS packet, and
wherein a header of each of the at least one link layer packet includes mode information indicating whether the header deletion for the at least one TS packet is applied;
input formatting the at least one link layer packet to output a baseband packet, wherein the at least one link layer packet is included in a payload of the baseband packet;
encoding the baseband packet;
building at least one signal frame including the encoded baseband packet;
modulating data in the built at least one signal frame by an Orthogonal Frequency Division Multiplex (OFDM) scheme; and
transmitting broadcast signals having the modulated data.

2. The method of claim 1 , wherein the input formatting includes generating the baseband packet by formatting the at least one link layer packet, and the payload of the baseband packet includes the header of the at least one link layer packet and the at least one TS packet to which the header deletion is applied.

3. The method of claim 1 , wherein a header of the baseband packet includes an extension field which extends the header of the baseband packet.

4. An apparatus for transmitting broadcast signals, the apparatus comprising:
an encapsulator to encapsulate at least one Transport Stream (TS) packet to output at least one link layer packet,
wherein the encapsulator includes a header deletion for the at least one TS packet, and
wherein a header of each of the at least one link layer packet includes mode information indicating whether the header deletion for the at least one TS packet is applied;
an input formatter to input format the at least one link layer packet to output a baseband packet, wherein the at least one link layer packet is included in a payload of the baseband packet;
an encoder to encode the baseband packet;
a frame builder to build at least one signal frame including the encoded baseband packet;
a modulator to modulate data in the built at least one signal frame by an Orthogonal Frequency Division Multiplex (OFDM) scheme; and
a transmitter to transmit broadcast signals having the modulated data.

5. The apparatus of claim 4 , wherein the input formatting includes generating the baseband packet by formatting the at least one link layer packet, and the payload of the baseband packet includes the header of the at least one link layer packet and the at least one TS packet to which the header deletion is applied.

6. The apparatus of claim 4 , wherein a header of the baseband packet includes an extension field which extends the header of the baseband packet.

Assignees

• Lg Electronics Inc

Inventors

• Hwang Jaeho
• Ko Woosuk
• Hong Sungryong

Classifications

• H04L5/0053

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04L5/0007

  the frequencies being orthogonal, e.g. OFDM(A) or DMT · CPC title

• H04L12/1881

  with schedule organisation, e.g. priority, sequence management · CPC title

• H04L27/2602

  Signal structure · CPC title