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:
Aug. 31, 2010
Filed:
Mar. 15, 2007
Tommi Auranen, Turku, FI;
Harri J. Pekonen, Raisio, FI;
Jussi Vesma, Turku, FI;
Pekka Talmola, Turku, FI;
Jukka Henriksson, Espoo, FI;
Visa Koivunen, Espoo, FI;
Jani Vare, Kaarina, FI;
Tommi Auranen, Turku, FI;
Harri J. Pekonen, Raisio, FI;
Jussi Vesma, Turku, FI;
Pekka Talmola, Turku, FI;
Jukka Henriksson, Espoo, FI;
Visa Koivunen, Espoo, FI;
Jani Vare, Kaarina, FI;
Nokia Corporation, Espoo, FI;
Abstract
Aspects of the invention are directed to service and channel discovery in a digital broadcast network. A pilot synchronization symbol, which has known characteristics, is included as a first symbol of digital broadcast frames. The pilot symbol, which can be decoded without having to resort to trial and error methods, contains parameters for the rest of the signal. So, the rest of the signal can be decoded without trial and error methods after the pilot symbol (and any additional synchronization symbols) is decoded. Channels containing digital video broadcast services can be efficiently detected using the known part of the signal. If the fixed known part is not found from the examined signal, then the signal will be considered a non-digital-video-broadcast signal or an empty channel, and the receiver can promptly proceed to a next channel/frequency. In this way, detecting non-digital-video-broadcast and empty channels becomes relatively fast.