MEANS FOR RECEIVING DATA VIA SATELLITE USING AT LEAST TWO POLARISATIONS

Title:

MEANS FOR RECEIVING DATA VIA SATELLITE USING AT LEAST TWO POLARISATIONS

Document Type and Number:

WIPO Patent Application WO/2005/109703

Kind Code:

A1

Abstract:

Apparatus is provided which allows the simultaneous reception, processing and availability of digital data which is transmitted in both linear and circular polarity formats, thereby allowing data over a greater frequency bandwidth to be available for selection and for selection and processing of data of different polarity formats to be achieved simultaneously. This therefore means that there is now the practical possibility to allow the continued broadcast of data in a circular polarity format over existing bandwidths and the additional broadcast of data in a linear polarity format in the same geographical region and over a larger frequency bandwidth thereby enlarging the amount of data which can be transmitted, and received and the user selections which are available and ensuring that the linear and circular polarity format data can be received and processed and be available in response to a user selection simultaneously.

Inventors:

STAFFORD GARY PATRICK (GB)
SMITH DAVID GERALD (GB)
DUTRONC JACQUES (FR)
BERRETTA GUILANO (FR)

Application Number:

PCT/GB2005/001812

Publication Date:

November 17, 2005

Filing Date:

May 11, 2005

Export Citation:

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Assignee:

INVACOM LTD (GB)
EUTELSAT SA (FR)
EUTELSAT INC (US)
STAFFORD GARY PATRICK (GB)
SMITH DAVID GERALD (GB)
DUTRONC JACQUES (FR)
BERRETTA GUILANO (FR)

International Classes:

H03D9/00; H04H40/90; H04N7/20; (IPC1-7): H04H1/00

Foreign References:

US6507952B1	2003-01-14
US20040077307A1	2004-04-22
EP1024613A2	2000-08-02
EP0851574A1	1998-07-01
US6373445B1	2002-04-16
US6424817B1	2002-07-23
US6507952B1	2003-01-14

Other References: