Broadcast receiver and method of processing data

• US 8,190,081 B2
• Filed: 07/07/2008
• Issued: 05/29/2012
• Est. Priority Date: 07/06/2007
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Cho, Il Soo, Cho, Hyeon Cheol, Park, Jong Sun, Choi, In Hwan, Lee, Hyoung Gon, Song, Won Gyu, Kim, Seung Man, Kim, Jin Woo, Kwak, Kook Yeon, Kim, Byoung Gill
• Primary Examiner(s): Alam, Fayyaz
• Application Number:
  US12/168,838
• Publication Number:
  US 20090042592A1
• Time in Patent Office: 1,422 Days
• Field of Search: 455 301- 306, 4554141-4143, 455/418, 725/32, 725/35, 725/40, 725/43, 725/48, 725/51, 725/52, 725 60- 64, 725/109, 725/110, 725/112
• US Class Current: 455/3.02
• CPC Class Codes: H04N 21/41407 embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57
• CPC Class Codes: H04N 21/43637 involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11] arrangements for wireless networking or broadcasting of information in indoor or near-field type systems H04B10/114
• CPC Class Codes: H04N 21/4382 Demodulation or channel decoding, e.g. QPSK demodulation analog front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 21/4383 Accessing a communication channel
• CPC Class Codes: H04N 21/4405 involving video stream decryption
• CPC Class Codes: H04N 21/4524 involving the geographical location of the client retrieval from the Internet by querying based on geographical locations G06F16/9537; systems specially adapted for using geographical information in broadcast systems H04H60/70; protocols in which the network application is adapted for the location of the user terminal in communication control or processing H04L67/52; services making use of the location of users or terminals in wireless networks H04W4/02; locating users or terminals in wireless networks H04W64/00
• CPC Class Codes: H04N 21/47202 for requesting content on demand, e.g. video on demand
• CPC Class Codes: H04N 7/17318 Direct or substantially direct transmission and handling of requests

Abstract

A broadcast receiver and a method of processing data are disclosed. The broadcast receiver includes a signal receiving unit, a transmission parameter detector, a block decoder, a storage unit, and a data manager. The signal receiving unit receives a broadcast signal multiplexed mobile broadcast service data including two-way contents and main broadcast service data. The transmission parameter detector detects the transmission parameter. The block decoder symbol-decodes the received broadcast signal included in the mobile broadcast service data in block units, based upon the detected transmission parameter. The storage unit stores the decoded two-way contents. The data manager reads a requested two-way contents from the stored two-way contents with respect to a user'"'"'s select signal, and provides the requested two-way contents service.

Claims

1. A broadcast receiver, comprising:

a signal receiver for receiving a broadcast signal in which mobile service data and main service data are multiplexed, wherein a parade of data groups in the broadcast signal are received during slots within a transmission frame, the slots being basic time periods for multiplexing the mobile service data and the main service data, and wherein each of the parade of data groups includes the mobile service data, a transmission parameter, signaling information and a plurality of known data sequences;

a demodulator for demodulating the received broadcast signal and obtaining, from the signaling information, fast information channel (FIC) data having cross layer information between a physical layer and an upper layer and transmission parameter channel (TPC) data indicating a version of the FIC data, wherein the TPC data are Reed-Solomon (RS) encoded and are multiplexed with the FIC data, and wherein the FIC data are block-interleaved RS-encoded;

a transmission parameter detector for detecting the transmission parameter;

a block decoder for symbol-decoding the mobile service data in block units based upon the detected transmission parameter;

an RS frame decoder for performing cyclic redundancy check (CRC)-decoding and RS-decoding on an RS frame in order to correct errors in the corresponding mobile service data, wherein the RS frame is configured by at least one data group of the parade of data groups, and wherein the RS frame includes at least one data packet corresponding to the mobile service data, an RS parity generated based upon the mobile service data, and a CRC checksum generated based upon the mobile service data and the RS parity;

a storage unit for storing the symbol-decoded mobile service data; and

a data manager for reading a request for specific mobile service data from the storage unit according to a user selection, and providing the specific mobile service data.

2. The broadcast receiver of claim 1, further comprising:

a telecommunication module for connecting the broadcast receiver with an external server under control of the data manager, reading the specific mobile service data from the external server according to the request for the specific mobile service data, and outputting the read specific mobile service data to the data manager.

3. The broadcast receiver of claim 1, further comprising:

a power controller for controlling power based upon the detected transmission parameter in order to receive one of the parade of data groups including the specific mobile service data.

4. The broadcast receiver of claim 1, further comprising:

a known sequence detector for detecting at least one known data inserted in at least one data group of the parade of data groups; and

a channel equalizer for channel-equalizing the mobile service data using at least one known data.

5. The broadcast receiver of claim 1, wherein initialization data are inserted at a beginning portion of each of the plurality of known data sequences, the initialization data for initializing a trellis encoder memory of a digital broadcast transmitting system.

6. A method of processing data by a broadcast receiver, the method comprising:

receiving a broadcast signal in which mobile service data and main service data are multiplexed, wherein a parade of data groups in the broadcast signal are received during slots within a transmission frame, the slots being basic time periods for multiplexing the mobile service data and the main service data, and wherein each of the parade of data groups includes the mobile service data, a transmission parameter, signaling information and a plurality of known data sequences;

demodulating the received broadcast signal;

obtaining, from the signaling information, fast information channel (FIC) data having cross layer information between a physical layer and an upper layer and transmission parameter channel (TPC) data indicating a version of the FIC data, wherein the TPC data are Reed-Solomon (RS) encoded and are multiplexed with the FIC data, and wherein the FIC data are block-interleaved RS-encoded;

detecting the transmission parameter;

symbol-decoding the mobile service data in block units based upon the detected transmission parameter;

performing cyclic redundancy check (CRC)-decoding and RS-decoding on an RS frame in order to correct errors in the corresponding mobile service data, wherein the RS frame is configured by at least one data group of the parade of data groups, and wherein the RS frame includes at least one data packet corresponding to the mobile service data, an RS parity generated based upon the mobile service data, and a CRC checksum generated based upon the mobile service data and the RS parity;

storing the symbol-decoded mobile service data in a storage unit; and

reading a request for specific mobile service data from the storage unit according to a user selection; and

providing the specific mobile service data.

7. The method of claim 6, further comprising:

connecting the broadcast receiver with an external server;

reading the specific mobile service data from the external server according to the user selection; and

providing the read specific mobile service data.

8. The method of claim 6, further comprising:

controlling power based upon the detected transmission parameter in order to receive one of the parade of data groups including the specific mobile service data.

9. The method of claim 6, further comprising:

detecting at least one known data inserted in at least one data group of the parade of data groups; and

channel-equalizing the mobile service data using at least one known data.

10. The method of claim 6, wherein initialization data are inserted at a beginning portion of each of the plurality of known data sequences, the initialization data for initializing a trellis encoder memory of a digital broadcast transmitting system.