Apparatus for converting broadcast signal and method for using the same

Patent metadata

Field	Value
Publication number	US-2018145777-A1
Application number	US-201715786401-A
Country	US
Kind code	A1
Filing date	Oct 17, 2017
Priority date	Nov 24, 2016
Publication date	May 24, 2018
Grant date	—

Abstract

Disclosed herein are an apparatus and method for converting a broadcast signal. The apparatus for converting a broadcast signal includes a demultiplexer unit for receiving a terrestrial broadcast signal and generating a terrestrial signaling signal, a signaling conversion unit for converting the terrestrial signaling signal into a cable signaling signal by parsing the terrestrial signaling signal, a cable multiplexer unit for generating a cable broadcast signal by multiplexing the cable signaling signal, and a cable modulation unit for modulating the cable broadcast signal and transmitting the cable broadcast signal over a cable network.

First claim

What is claimed is:

1 . An apparatus for converting a broadcast signal, comprising:
a demultiplexer unit for receiving a terrestrial broadcast signal and generating a terrestrial signaling signal; a signaling conversion unit for converting the terrestrial signaling signal into a cable signaling signal by parsing the terrestrial signaling signal; a cable multiplexer unit for generating a cable broadcast signal by multiplexing the cable signaling signal; and a cable modulation unit for modulating the cable broadcast signal and transmitting the cable broadcast signal over a cable network.

2 . The apparatus of claim 1 , wherein, when the terrestrial broadcast signal is received via a wireless network, the demultiplexer unit generates a baseband signal by demodulating the terrestrial broadcast signal, performs baseband depacketization and ATSC Link-Layer Protocol (ALP) depacketization on the baseband signal, and thereby generates the terrestrial signaling signal.

3 . The apparatus of claim 2 , wherein, when the terrestrial broadcast signal is received via a wired network, the demultiplexer unit generates the terrestrial signaling signal in an IP format by demultiplexing the terrestrial broadcast signal.

4 . The apparatus of claim 3 , wherein the signaling conversion unit acquires information about a position of a Service-Layer Signaling (SLS) signal, which is information acquired by parsing a Low-Level Signaling (LLS) signal of the terrestrial signaling signal.

5 . The apparatus of claim 4 , wherein the signaling conversion unit acquires the SLS signal, the information about the position of which is acquired, by requesting the SLS signal from the demultiplexer unit, parses the acquired SLS signal, and delivers information acquired by parsing the SLS signal to the demultiplexer unit.

6 . The apparatus of claim 5 , wherein the demultiplexer unit generates a terrestrial broadcast media signal based on the information acquired by parsing the SLS signal.

7 . The apparatus of claim 6 , further comprising:
a media conversion unit for converting the terrestrial broadcast media signal so as to match a format of a cable broadcast media signal.

8 . The apparatus of claim 7 , wherein the signaling conversion unit generates the cable signaling signal using the information acquired by parsing the LLS signal and the SLS signal and using previously stored information about the cable network.

9 . The apparatus of claim 8 , wherein the signaling conversion unit controls the cable signaling signal in consideration of a transmission period and a transmission order.

10 . The apparatus of claim 9 , wherein the cable multiplexer unit multiplexes the cable signaling signal and the cable broadcast media signal into a single stream.

11 . The apparatus of claim 10 , wherein the cable multiplexer unit further multiplexes an external media signal and an additional data signal, input by a user, into the single stream.

12 . The apparatus of claim 11 , wherein the cable multiplexer unit generates the cable broadcast signal by multiplexing the single stream into any one of an MPEG-2 stream format and an IP stream format.

13 . A method for converting a broadcast signal, in which an apparatus for converting a broadcast signal is used, comprising:
receiving a terrestrial broadcast signal and generating a terrestrial signaling signal; converting the terrestrial signaling signal into a cable signaling signal by parsing the terrestrial signaling signal; generating a cable broadcast signal by multiplexing the cable signaling signal; and modulating the cable broadcast signal and transmitting the cable broadcast signal over a cable network.

14 . The method of claim 13 , wherein converting the terrestrial signaling signal is configured to acquire information about a position of a Service-Layer Signaling (SLS) signal, which is information acquired by parsing a Low-Level Signaling (LLS) signal of the terrestrial signaling signal.

15 . The method of claim 14 , wherein converting the terrestrial signaling signal is configured to acquire the SLS signal using the information about the position thereof and to parse the acquired SLS signal.

16 . The method of claim 15 , wherein converting the terrestrial signaling signal is configured to generate a terrestrial broadcast media signal based on the information acquired by parsing the SLS signal.

17 . The method of claim 16 , wherein converting the terrestrial signaling signal is configured to convert the terrestrial broadcast media signal so as to match a format of a cable broadcast media signal.

18 . The method of claim 16 , wherein converting the terrestrial signaling signal is configured to generate the cable signaling signal using the information acquired by parsing the LLS signal and the SLS signal and using previously stored information about the cable network.

19 . The method of claim 18 , wherein converting the terrestrial signaling signal is configured to control the cable signaling signal in consideration of a transmission period and a transmission order.

20 . The method of claim 19 , wherein generating the cable broadcast signal is configured to multiplex the cable signaling signal and the cable broadcast media signal into a single stream.

Assignees

• Electronics & Telecommunications Res Inst

Inventors

• Bae Byung-Jun
• Oh Hye-Ju
• Cho Yong-Seong
• Kim Heung-Mook
• Jung Joon-Young
• Hur Nam-Ho

Classifications

• H04N21/2362

  Generation or processing of Service Information [SI] · CPC title

• H04N21/2381

  Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network {(transmission of MPEG streams over ATM H04L12/5601)} · CPC title

• H04N7/10

  Adaptations for transmission by electrical cable (H04N7/12 takes precedence) · CPC title

• H04H20/78 Primary

  CATV [Community Antenna Television] systems · CPC title

• H04N21/23608

  Remultiplexing multiplex streams, e.g. involving modifying time stamps or remapping the packet identifiers · CPC title