Mr. Gilles Gagnon Profile

Gilles Gagnon

President at Communications Research Ctr Canada

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Proceedings Article | 19 November 2003 Paper

Development of an ATSC multimedia datacasting receiver

Gilles Gagnon, Hong Liu, Wei Li

Proceedings Volume 5241, (2003) https://doi.org/10.1117/12.511234

KEYWORDS: Receivers, Multimedia, Video, Video processing, Televisions, Human-machine interfaces, Telecommunications, Multiplexers, Internet, Transmitters

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This paper presents the development of an ATSC terrestrial data receiver to be used in multimedia datacasting for remote and rural communities. In the context of a project put forward at the Communications Research Centre Canada to deliver interactive multimedia to remote and rural areas in Canada, a receiver capable of extracting Internet Packets (IP) as well as video and audio transport streams (TS) based on the Advanced Television Systems Committee (ATSC) terrestrial digital television system is developed. This paper describes the design, implementation, functionality, as well as several applications of this receiver which plays an important role in the interactive multimedia datacasting system. The ATSC terrestrial transmission chain from the server at the transmitter site to the receiver (client) at the end-user's premise is presented. A number of possible implementations for a return channel are proposed. Preliminary results of laboratory trials as well as plans for field trials are presented.

Proceedings Article | 22 June 2001 Paper

3D MPEG-2 video transmission over broadband network and broadcast channels

Gilles Gagnon, Suganthan Subramaniam, Andre Vincent

Proceedings Volume 4297, (2001) https://doi.org/10.1117/12.430827

KEYWORDS: Video, Computer programming, Video surveillance, 3D video compression, 3D displays, Video compression, Video coding, Broadband telecommunications, Telecommunications, Televisions

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This paper explores the transmission of MPEG-2 compressed stereoscopic (3-D) video over broadband networks and digital television (DTV) broadcast channels. A system has been developed to perform 3-D (stereoscopic) MPEG-2 video encoding, transmission and decoding over broadband networks in real- time. Such a system can benefit applications where a depiction of the relative positions of objects in 3-dimensional space is critical, by providing visual cues along the sight axis. Applications such as tele-medicine, remote surveillance, tele- education, entertainment and others could benefit from such a system since it conveys an added viewing experience. For simplicity and cost efficiency the system is kept as simple as possible while offering a certain degree of control over the encoding and decoding platforms. Data exchange is done with TCP/IP for control between the server and client and with UDP/IP for the MPEG-2 transport streams delivered to the client. Parameters such as encoding rate can be set independently for the left and right viewing channels to satisfy network bandwidth restrictions, while maintaining satisfactory quality. Using this system, transmission of stereoscopic MPEG-2 transport streams (video and audio) has been performed over a 155 Mbps ATM network shared with other video transactions between server and clients. Preliminary results have shown that the system is reasonably robust to network impairments making it useable in relatively loaded networks. An innovative technique for broadcasting Standard Definition Television 3-D video using an ATSC compatible encoding and broadcasting system is also presented. This technique requires a simple video multiplexer before the ATSC encoding process, and a slight modification at the receiver after the ATSC decoding.

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