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US 6,298,100 B1Granted
Phase error estimation method for a demodulator in an HDTV receiver
AssigneeThomson Licensing
InventorAaron Reel Bouillet
Life of this patent
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AssigneeThomson Licensing
InventorAaron Reel Bouillet
Estimating the term…
A receiver for processing a VSB modulated signal containing terrestrial broadcast high definition television information and a pilot component includes a carrier recovery network (22; FIG. 3) that produces a demodulated baseband signal. The carrier recovery network additionally responds to a locally generated control signal (Ph. Offset; 360) representing an unwanted phase offset of the pilot signal due to multipath distortion, for example. The control signal is used to compensate for the pilot phase offset before the demodulated signal is equalized. The control signal is produced by correlating received sync values with both a reference sync value (362) and a Hilbert transform of the reference sync value (363). The output of the carrier recovery network signal is phase compensated twice.
In a receiver for processing a received Vestigial Sideband (VSB) modulated signal containing a digital pilot carrier component and digital video data represented by a VSB symbol constellation, said data having a data frame format constituted by a succession of data frames comprising a field a sync component prefacing a plurality of data segments each having an associated segment sync, a method comprising the steps of:
In a receiver for processing a received Vestigial Sideband (VSB) modulated datastream containing a pilot carrier component and video data represented by a VSB symbol constellation, said data having a data frame format constituted by a succession of data frames comprising a field of sync component prefacing a plurality of data segments each having an associated segment sync, a method comprising the steps of:
Dependencies are inferred from the claim text.