Transmitting apparatus and receiving apparatus and signal processing method thereof

Patent metadata

Field	Value
Publication number	US-2016197826-A1
Application number	US-201614989894-A
Country	US
Kind code	A1
Filing date	Jan 7, 2016
Priority date	Jan 7, 2015
Publication date	Jul 7, 2016
Grant date	—

Abstract

Disclosed is a transmitting apparatus which includes: a packet generator generating a packet including a header and a payload from an input stream including a plurality of transport stream (TS) packets; and a signal processor signal-processing the packet, wherein the header includes a base header including a first field indicating a packet type which is the TS packets, and a second field indicating a number of TS packets included in the payload, wherein the base header further includes a third field set to a first value indicating that there is no additional header or a second value indicating that there is an additional header, wherein, when the third field is set to the second value, the additional header includes a fourth field indicating a number of deleted null packets with respect to each of at least one TS packet group including consecutive TS packets, and wherein the null packets deleted with respect to each of the TS packet group precede a first TS packet or follow a last TS packet included in each of the TS packet group.

First claim

What is claimed is:

1 . A transmitting apparatus comprising at least one processor configured to implement:
a packet generator generating a packet comprising a header and a payload from an input stream comprising a plurality of transport stream (TS) packets; and a signal processor signal-processing the packet, wherein the header comprises a base header comprising a first field indicating a packet type which is the TS packets, and a second field indicating a number of TS packets included in the payload, wherein the base header further comprises a third field set to a first value indicating that there is no additional header or a second value indicating that there is an additional header, wherein, when the third field is set to the second value, the additional header comprises a fourth field indicating a number of deleted null packets with respect to each of at least one TS packet group comprising consecutive TS packets, and wherein the null packets deleted with respect to each of the TS packet group precede a first TS packet or follow a last TS packet included in each of the TS packet group.

2 . The transmitting apparatus of claim 1 , wherein when the number of the TS packet group included in the payload is one, the fourth field includes only a number of deleted null packets with respect to one TS packet group.

3 . The transmitting apparatus of claim 1 , wherein the third field is set to the second value when there is a deleted null packet or when TS header compression is applied.

4 . The transmitting apparatus of claim 3 , wherein when the third field is set to the second value, the additional header includes a fifth field indicating whether the TS header compression is applied.

5 . The transmitting apparatus of claim 3 , wherein, by the TS header compression, a header of one TS packet among the TS packets is included in the payload of the packet and a header of at least one another TS packet among the TS packets is not included in the payload of the packet.

6 . The transmitting apparatus of claim 4 , wherein the fourth field is implemented as a 7-bit field,
wherein, when the fifth field is set to a fourth value indicating that the TS header compression is not applied, the fourth field is set to 0 in a case where 128 Null packets are deleted, and wherein, when the fifth field is set to a fifth value indicating that the TS header compression is applied, the fourth field is set to 0 in a case where no null packet is deleted.

7 . The transmitting apparatus of claim 1 , wherein each of the TS packets comprises sync information which is removed when the TS packets are encapsulated in the payload of the packet to generate the packet.

8 . The transmitting apparatus of claim 1 , wherein the additional header comprises a field indicating a location of the deleted null packets with respect to a TS packet closest to the deleted null packets.

9 . The transmitting apparatus of claim 1 , wherein the additional header further comprises a field indicating a number of deleted null packet groups to generate the packet, and
wherein each of the deleted null packet groups comprises one or more consecutive null packets disposed before or after one or more consecutive TS packets.

10 . The transmitting apparatus of claim 1 , wherein the packet is a link-layer protocol packet which is to be mapped to a physical layer before being transmitted out from the transmitting apparatus.

11 . A signal processing method of a transmitting apparatus, comprising:
generating a packet comprising a header and a payload from an input stream comprising a plurality of transport stream (TS) packets; and signal-processing the packet, and wherein the header comprises a base header comprising a first field indicating a packet type which is the TS packets, and a second field indicating a number of TS packets included in the payload, wherein the base header further comprises a third field set to a first value indicating that there is no additional header or a second value indicating that there is an additional header, wherein, when the third field is set to the second value, the additional header comprises a fourth field indicating a number of deleted null packets with respect to each of at least one TS packet group comprising consecutive TS packets, and wherein the null packets deleted with respect to each of the TS packet group precede a first TS packet or follow a last TS packet included in each of the TS packet group.

12 . The signal processing method of claim 11 , wherein when the number of the TS packet group included in the payload is one, the fourth field includes only a number of deleted null packets with respect to one TS packet group.

13 . The signal processing method of claim 11 , wherein the third field is set to the second value when there is a deleted null packet or when TS header compression is applied.

14 . The signal processing method of claim 13 , wherein, by the TS header compression, a header of one TS packet among the TS packets is included in the payload of the packet and a header of at least one another TS packet among the TS packets is not included in the payload of the packet.

15 . The signal processing method of claim 13 , wherein the fourth field is implemented as a 7-bit field,
wherein, when the fifth field is set to a fourth value indicating that the TS header compression is not applied, the fourth field is set to 0 in a case where 128 null packets are deleted, and wherein, when the fifth field is set to a fifth value indicating that the TS header compression is applied, the fourth field is set to 0 in a case where no null packet is deleted.

16 . The signal processing method of claim 11 , wherein each of the TS packets comprises sync information which is removed when the TS packets are encapsulated in the payload of the packet to generate the packet.

17 . The signal processing method of claim 11 , wherein the additional header comprises a field indicating a location of the deleted null packets with respect to a TS packet closest to the deleted null packets.

18 . The signal processing method of claim 11 , wherein the additional header further comprises a field indicating a number of deleted null packet groups to generate the packet, and
wherein each of the deleted null packet groups comprises one or more consecutive null packets disposed before or after one or more consecutive TS packets.

19 . The signal processing method of claim 11 , wherein the packet is a link-layer protocol packet which is to be mapped to a physical layer before being transmitted out from the transmitting apparatus.

20 . A non-transitory computer readable recording medium having recorded thereon a program for executing the signal processing method of claim 11 .

Assignees

• Samsung Electronics Co Ltd

Inventors

• Yang Hyun-Koo
• Hwang Sung-Hee

Classifications

• H04L45/74 Primary

  Address processing for routing · CPC title

• H04L69/22 Primary

  Parsing or analysis of headers · CPC title

• H04L67/60

  Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources (admission control or resource allocation H04L47/70) · CPC title

• H04L65/70

  Media network packetisation · CPC title

• H04L65/611

  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 title