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:
Jul. 14, 2009

Filed:

Sep. 13, 2005
Applicants:

Randall Paul Baartman, Rochester, MN (US);

Steven Joseph Branda, Rochester, MN (US);

John Joseph Stecher, Rochester, MN (US);

Inventors:

Randall Paul Baartman, Rochester, MN (US);

Steven Joseph Branda, Rochester, MN (US);

John Joseph Stecher, Rochester, MN (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 7/14 (2006.01); H04L 12/16 (2006.01);
U.S. Cl.
CPC ...
Abstract

A method, apparatus and computer program product are provided for synchronizing separate compressed video and text streams to provide lightweight closed captioning and instant messaging integration with video conferencing. A video encoder encodes a video stream and periodically generates a synchronization frame event. Each generated synchronization frame event has a unique ID. A text recording agent receives the periodically generated synchronization frame events, and generates text packets associating stored text with the synchronization frame event. A video decoder decodes the video stream, periodically generating the synchronization frame event having the unique ID. A text display agent receives the periodically generated synchronization frame events and associates stored text packets with the synchronization frame events.


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