Lsi Logic Corporation

Jonathan Highton Scott

Adrian Paul Robinson

Oliver Paul Haffenden

Philippe Roger Sadot

Justin David Mitchell

Jean-Marc Guyot

Christopher Keith Perry Clarke

Regis Lauret

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 (,).

Demodulating digital video broadcast signals

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Horley, United Kingdom

Jonathan Highton Scott