Source: http://www.google.com/patents/US8130798?ie=ISO-8859-1
Timestamp: 2015-01-27 02:11:49
Document Index: 583142244

Matched Legal Cases: ['Application No. 60', 'Application No. 60', 'application No. 2006', 'Application No. 2008', 'Application No. 2009', 'Application No. 2006', 'Application No. 2007143323', 'Application No. 2007143323', 'Application No. 2006', 'application No. 2007']

Patent US8130798 - Method for formatting digital broadcast transport stream packet for improved ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA method of formatting a digital broadcast transport stream packet, a digital broadcast transmitter, and a signal processing method thereof, includes constructing a transport stream packet that includes a stuffing region for an insertion of a known supplementary reference signal (SRS) data therein, randomizing...http://www.google.com/patents/US8130798?utm_source=gb-gplus-sharePatent US8130798 - Method for formatting digital broadcast transport stream packet for improved receiving performance, digital broadcast transmitter, and signal processing method thereofAdvanced Patent SearchPublication numberUS8130798 B2Publication typeGrantApplication numberUS 12/249,234Publication dateMar 6, 2012Filing dateOct 10, 2008Priority dateMay 23, 2005Also published asCA2608461A1, CA2679566A1, EP1884117A1, EP1884117A4, EP2157795A2, EP2157795A3, EP2157795B1, US7920602, US8135044, US8194705, US20060262863, US20090033804, US20090040392, US20090074081, WO2006126805A1Publication number12249234, 249234, US 8130798 B2, US 8130798B2, US-B2-8130798, US8130798 B2, US8130798B2InventorsEui-jun Park, Dong-Il Song, Choon-sik Jung, Jin-Hee Jeong, Hee-beom Kang, Jong-Hun KimOriginal AssigneeSamsung Electronics Co., Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (37), Non-Patent Citations (17), Classifications (37) External Links: USPTO, USPTO Assignment, EspacenetMethod for formatting digital broadcast transport stream packet for improved receiving performance, digital broadcast transmitter, and signal processing method thereofUS 8130798 B2Abstract A method of formatting a digital broadcast transport stream packet, a digital broadcast transmitter, and a signal processing method thereof, includes constructing a transport stream packet that includes a stuffing region for an insertion of a known supplementary reference signal (SRS) data therein, randomizing the packet that includes the stuffing region is randomized, and the SRS data is inserted into the stuffing region of the randomized packet. Adding a parity for an error correction to the packet into which the SRS data has been inserted, the packet to which the parity has been added is interleaved, and a trellis encoding of the interleaved packet is performed. Inserting a segment sync signal and a field sync signal into the trellis-encoded packet, and a vestigial side band (VSB) modulation and an RF conversion of the packet are performed to transmit the VSB-modulated and RF-converted packet.
What is claimed is: 1. A digital broadcast receiver, comprising:
20. The method of claim 11, wherein the known data comprises initialization bytes which initialize a trellis encoder which trellis encodes the stream at the digital broadcast transmitter. Description
CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of U.S. application Ser. No. 11/416,204, filed on May 3, 2006, now pending, which claims benefit of U.S. Provisional Patent Application No. 60/683,304 filed on May 23, 2005 and U.S. Provisional Patent Application No. 60/724,898 filed on Oct. 11, 2005 in the United States Patent and Trademark Office, the disclosures of which are incorporated herein by reference.
Aspects of the present invention relate to a method for formatting a digital broadcast transport stream packet, a digital broadcast transmitter, and a signal processing method thereof, and more particularly to a method of formatting a digital broadcast transport stream packet, a digital broadcast transmitter, and a signal processing method thereof, which can improve the receiving performance of a receiving system and maintain the compatibility with the existing system by generating an adaptation field in a transport stream packet and inserting known data (i.e., supplementary reference sequence (hereinafter referred to as �SRS�)) into the position of the adaptation field.
SUMMARY OF THE INVENTION An aspect of the present invention is to provide a method for formatting a digital broadcast transport stream packet, and a signal processing method for a digital broadcast transmitter, which can maintain the compatibility with the existing digital broadcast transmitting/receiving system.
Generally, the SRS is a special known sequence in a deterministic VSB frame that is inserted in such a way that a receiver equalizer can utilize this known sequence to mitigate dynamic multi-path and other adverse channel conditions. The equalizer of a receiver uses these contiguous sequences to adapt itself to a dynamically changing channel. When the encoder states have been forced to a known Deterministic State (DTR), an appended pre-calculated �known sequence� of bits (SRS pattern) is then processed immediately in a pre-determined way at specific temporal locations at the Interleaver input of the frame. The resulting symbols, at the Interleaver output, due to the way ATSC compatible Interleaver functions will appear as known contiguous symbol patterns in known locations in the VSB frame, which is available to the receiver as additional equalizer training sequence. The data to be used in the transport stream (TS) packets to create these known symbol sequence is introduced into the system in a backward compatible way using existing standard mechanisms. This data is carried in the MPEG2 adaptation field. Hence existing standards are leveraged, and compatibility is assured.
According to an aspect of the invention, the trellis encoder 370 initializes the value temporarily stored in its own memory device to a specified value. For example, the initialized value can be a �00� state. Whatever the value, the initialization is at a start point of the SRS. The trellis encoder 370 performs the trellis encoding of the data. Also, the trellis encoder 370 outputs a value for initializing the memory to the backward compatibility parity generator 380, receives a new parity generated by the backward compatibility parity generator 380, and replaces the corresponding existing parity with the received new parity such that the trellis encoding is performed with the new parity received from the backward compatibility parity generator 380.
As shown, the trellis encoder 470 initializes the value temporarily stored in its own memory device to a specified value (for example, to a �00� state) at a start point of the SRS, and performs the trellis encoding of the data. Also, the trellis encoder 470 outputs a value for initializing the memory to the backward compatibility parity generator 480, receives a new parity generated by the backward compatibility parity generator 380, and replaces the corresponding existing parity by the received new parity.
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No. 12/249,216, filed Oct. 10, 2008, Eui-jun Park et al., Samsung Electronics Co., Ltd.17Written Opinion issued in Korean International Patent Application No. PCT/KR2006/001873 on Sep. 27, 2006.Classifications U.S. Classification370/522, 370/529International ClassificationH04J3/12, H04N7/52, H04N7/24Cooperative ClassificationH04H60/07, H03M13/253, H04N21/4382, H04N21/2383, H03M13/6538, H03M13/2936, H03M13/256, H04L1/0071, H04L1/0041, H04N21/23611, H04N21/242, H04N21/23614, H04L1/0083, H04L1/006, H04N21/4348, H04L1/0065European ClassificationH04L1/00B7K1, H04L1/00B3, H04L1/00B7C1, H04L1/00F2, H04L1/00B7V, H03M13/25T, H04H60/07, H03M13/25C, H04N21/434W, H04N21/236W, H04N21/242, H04N21/236T, H04N21/2383, H04N21/438M, H03M13/29C3, H03M13/65K6RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services