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:
Nov. 20, 2001
Filed:
May. 01, 1998
Jonathan Highton Scott, Horley, GB;
Justin David Mitchell, Crawley, GB;
Christopher Keith Perry Clarke, Crawley, GB;
Adrian Paul Robinson, London, GB;
Oliver Paul Haffenden, London, GB;
Philippe Sadot, Ville d'Avray, FR;
Regis Lauret, Sonchamp, FR;
Jean-Marc Guyot, Paris, FR;
LSI Logic Corporation, Milpitas, CA (US);
Abstract
A demodulator suitable for implementation in a single chip for demodulating digital video broadcast signals comprising data modulated on a multiplicity of spaced carrier frequencies, wherein an input broadcast signal is converted to a frequency sufficiently low to enable analog digital conversion of the signal, the demodulator comprising analog to digital conversion means (,) for converting the broadcast signal to a series of digital samples, real to complex conversion means (,) for converting each digital sample to a complex number value, Fourier transform means (,) for analyzing the complex number values to provide a series of signal values for each carrier frequency, frequency control means (,), comprising means responsive to the output of said Fourier Transform means for producing a signal for controlling the frequency of the signal formed by said complex number values, and signal processing means for receiving the signal values and providing an output for decoding, the signal processing means including channel equalization means (,) and channel state information generating means (,).