The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jun. 11, 2019

Filed:

Jul. 30, 2015
Applicant:

Enensys Technologies, Cesson Sevigne, FR;

Inventors:

Ludovic Poulain, Cesson Sevigne, FR;

Laurent Roul, Cesson Sevigne, FR;

Assignee:

ENENSYS TECHNOLOGIES, Cesson Sevigne, FR;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04N 21/81 (2011.01); H04N 21/236 (2011.01); H04N 21/61 (2011.01);
U.S. Cl.
CPC ...
H04N 21/814 (2013.01); H04N 21/23608 (2013.01); H04N 21/23611 (2013.01); H04N 21/6112 (2013.01);
Abstract

A method for broadcasting an alert service in a system for broadcasting digital audiovisual programs in a single-frequency network, wherein the method includes steps of: obtaining frames containing the alert service and other services; associating a mark for each frame; identifying the identifiers of the packets of audio and video components of the alert service and of other services; identifying the identifiers of packets of audio and video components of other services; receiving a command to broadcast an alert message; storing video and audio packets of the alert service as from the first frame mark following the reception of the alert message broadcast command; and replacing, from the second frame mark following the reception of the alert message broadcast command, all the packets of the video and audio components of the services other than the alert service with the packets of the alert service.


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