High definition television transmission with mobile capability

Abstract

A method and architecture for processing signal communications between an encoder and decoder operating according to the ATSC standard adapted for mobile handheld transmission is disclosed. The method and apparatus comprises embedding code rate identifiers in the packet ID and training sequences, using a chirp sequence as a training sequence and transmitting data in a single burst wherein the data is encoded according to multiple code rates.

Description

PRIORITY CLAIM[0001]This application claims the benefit of U.S. Provisional Patent Application No. 60 / 998,978 entitled “High Definition Television Transmission with Mobile Capability” and No. 60 / 999,040 entitled “Physical Layer Control Block for Mobile VSB Submission” and No. 60 / 998,961 entitled “High Definition Television Transmission Including a Mode For Mobile Operation”, which are incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates to transmitting data in a multimode transmission system. In particular, the present invention relates to a transmission system wherein multiple code rates can be used in data transmission within a single standard transmission protocol, such as ATSC.BACKGROUND OF THE INVENTION[0003]Over the past decades, video transmission systems have migrated from analog to digital formats. In the United States, broadcasters are in the final stages of completing the switch from the National Television System Committee (NTSC) ana...

AI Technical Summary

Benefits of technology

This solution enables timely and efficient data acquisition in mobile receivers by clearly indicating the code rate, improving the robustness of digital television signal reception in mobile devices while maintaining backward compatibility with legacy systems.

Problems solved by technology

Transmissions broadcast under the ATSC A / 53 standard, however, present difficulties for mobile receivers.

Providing identification typically reduces the efficiency of the data transmission by either requiring a separate data channel or implementing a receiver which attempts to decode the incoming data at each possible code rate until the suitable code rate is found.

This is a time consuming effort, which prevents the timely acquisition of data, especially in a system where the code rate may change continuously during a data stream.

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