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:
Jul. 28, 2009
Filed:
Sep. 08, 2004
Jani Väre, Kaarina, FI;
Jarno Kallio, Turku, FI;
Arto Hamara, Turku, FI;
Kalle Rindell, Turku, FI;
Nokia Corporation, Espoo, FI;
Abstract
A digital video broadcast network comprises a content provider and several transmitters. Each transmitter may transmit more than one signal, different signals having different frequencies, multiplexes and the like and relating to different network types. An integrated receiver/decoder (IRD) is mobile in the area around the transmitters. As well as transmitting service information as part of a network information table on a data layer, the transmitters provide in their output signals transmitter parameter information as TPS data on a physical layer. This TPS information includes information identifying whether there are other networks available, and preferably the number of other networks. Transmission parameters relating to the other networks are included in an other_network_descriptor, forming part of an NIT actual or a BAT, or alternatively in an NIT_other. This information is used by the IRD in signal scan. Using the described broadcast signals, signal scan can be made more efficient, resulting in reduced power consumption and scanning time. IRDs may also receive free field three dimensional models of signal levels created for a group of cells. The models may be in the form of bitmaps and used during handover procedures.