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.
Patent No.:
Date of Patent:
Oct. 20, 2009
Filed:
Oct. 06, 2003
Alberto Morello, Turin, IT;
Alberto Morello, Turin, IT;
Rai Radiotelevisione Italiana S.p.A., Rome, IT;
Abstract
The streams from a plurality of VBR coders or generic data sources () are multiplexed to a single stream by a multiplexer (), while inserting null packets to make their bit-rates uniform. A null-packet eliminator () removes the null packets from the stream, while signaling their positions, and inputs the stream to an ACM modulator () which codes the stream with the maximum ruggedness allowed by the rate of the incoming useful packets, and transmits the stream over a satellite channel. In the receiving station, the stream is demodulated by an ACM demodulator (), and the null packets are re-inserted into the stream by a re-inserter (), based on the received signaling. A bit-rate control circuit () receives from the transmitting station, over a return channel, a signaling of the quality of the received signal (QoS) and modifies the bit-rate of the VBR coders or generic data sources () accordingly.