Broadcast receiving system and method for processing broadcast signals

• US 8,103,227 B2
• Filed: 06/30/2008
• Issued: 01/24/2012
• Est. Priority Date: 06/29/2007
• Status: Active Grant

• 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, Jong Moon, Kim, Jin Woo, Kwak, Kook Yeon, Kim, Byoung Gill
• Primary Examiner(s): Jackson, Blane J
• Application Number:
  US12/165,501
• Publication Number:
  US 20090029670A1
• Time in Patent Office: 1,303 Days
• Field of Search: 455/132, 455/133, 455/134, 455/136, 455/137, 455/139, 455/140, 455/414.1, 455/414.2, 455/414.3, 455/414.4, 455/456.1, 455/456.2, 455/456.3, 455/456.6, 455/457, 455/550.1, 455/556.1, 455/566, 455/572, 455/575.9
• US Class Current: 455/127.5
• CPC Class Codes: G01C 21/3889 Transmission of selected map data, e.g. depending on route
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/30 Resource management for broadcast services

Abstract

A broadcast receiving system capable of receiving mobile broadcast data and a method for processing broadcast signals are disclosed. The broadcast receiving system includes a first receiving unit, a second receiving unit, a known sequence detector, a equalizer, and a display unit. The first receiving unit receives a first broadcast signal including first mobile broadcast service data and first main broadcast service data. The second receiving unit receives a second broadcast signal including second mobile broadcast service data and second main broadcast service data. The known sequence detector detects at least one of known data included in the received first broadcast signal and known data included in the received second broadcast signal. The channel equalizer uses the detected known data, thereby channel-equalizing the received first and second mobile broadcast service data corresponding to the detected known data. The display unit provides any one of first video data and second video data included in the channel-equalized first and second mobile broadcast service data to a user.

Claims

1. A broadcast receiving system, comprising:

a receiving unit receiving a broadcast signal including mobile broadcast service data, wherein the mobile broadcast service data configures a data group, wherein the data group is divided into a plurality of regions, and wherein known data sequences are inserted in some regions among the plurality of regions within the data group, wherein the data group includes signaling data located between two of the known data sequences, wherein the signaling data includes a transmission parameter channel (TPC) including a parade identifier indentifying a parade to which the data group belongs, the parade being a collection of data groups;

a known sequence detector detecting position information of at least one known data sequence included in the received broadcast signal;

a channel equalizer using at least one known data sequence, in order to channel-equalize the received mobile broadcast service data; and

a power controller performing power control by powering-on during reception of groups of a particular parade when receiving the particular parade with a particular parade identifier and powering-off at all other times.

2. The broadcast receiving system of claim 1, further comprising:

a position information module generating current position information of the broadcast receiving system; and

a navigation unit performing at least travel route search, map matching, or travel route guidance by using the generated current position information and map information.

3. The broadcast receiving system of claim 1, further comprising:

a voice processing unit processing corresponding to video data.

4. The broadcast receiving system of claim 1, further comprising:

a transmission parameter detector detecting a transmission parameter inserted in a predetermined position within the data group; and

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

5. The broadcast receiving system of claim 1, further comprising:

a RS frame decoder performing Cyclic Redundancy Check (CRC)—

decoding and Reel-Solomon (RS)—

decoding on the mobile broadcast service data in order to correct errors that occurred in the mobile broadcast service data.

6. The broadcast receiving system of claim 1, further comprising a display unit simultaneously displaying first video data on a first region of a screen and second video data a second region of the screen.

7. The broadcast receiving system of claim 1, wherein initialization data are inserted at a beginning portion of each of the known data sequences, the initialization data being used for initializing a memory included in a trellis encoder of a broadcast transmitting system.

8. A method for processing broadcast signals in a broadcast receiving system, the method comprising:

receiving a broadcast signal including mobile broadcast service data, wherein the mobile broadcast service data configures a data group, wherein the data group is divided into a plurality of regions, and wherein known data sequences are inserted in some regions among the plurality of regions within the data group, wherein the data group includes signaling data located between two of the known data sequences, wherein the signaling data includes a transmission parameter channel (TPC) including a parade identifier indentifying a parade to which the data group belongs, the parade being a collection of data groups;

detecting position information of at least one known data sequence included in the received broadcast signal;

channel-equalizing the received mobile broadcast service data by using at least one known data sequence; and

performing power control by powering-on during reception of groups of a particular parade when receiving the particular parade with a particular parade identifier and powering-off at all other times.

9. The method of claim 8, further comprising:

generating current position information of the broadcast receiving system; and

performing at least travel route search, map matching, or travel route guidance by using the generated current position information and map information.

10. The method of claim 8, further comprising:

processing audio data corresponding to video data.

11. The method of claim 8, further comprising:

detecting a transmission parameter inserted in a predetermined position within the data group; and

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

12. The method of claim 8, further comprising:

performing Cyclic Redundancy Check (CRC)—

decoding and Reel-Solomon (RS)—

decoding on the mobile broadcast service data in order to correct errors that occurred in the mobile broadcast service data.

13. The method of claim 8, wherein initialization data are inserted at a beginning portion of each of the known data sequences, the initialization data being used for initializing a memory included in a trellis encoder of a broadcast transmitting system.