Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Dual mode QAM/VSB receiver










Image Number 11 for United States Patent #6842495.

A television receiver system capable of receiving and demodulating television signal information content that has been modulated and transmitted in accordance with a variety of modulation formats is disclosed. In particular, the system is able to accommodate receipt and demodulation of at least 8 and 16-VSB modulated signals in order to support US HDTV applications, as well as 64 and 256-QAM modulated signals, for European and potential US CATV implementations. The system includes carrier and timing recovery loops adapted to operate on an enhanced pilot signal as well as decision directed carrier phase recovery loops. Phase detectors operate on I and Q rail signals, or generate a Q rail from a Hilbert transform of the I rail. Decision directed loops incorporate a trellis decoder in order to operate on sequence estimated decisions for improved reliability in poor SNR environments.








 
 
  Recently Added Patents
Method, apparatus or computer program for changing from scheduled to unscheduled communication modes
Produce container and lid assembly
Disc shaped high density recording medium
Power-on reset circuit
Question and answer system wherein experts are associated with models and have response rates that are associated with time intervals
System or method to assist and automate an information security classification and marking process for government and non-government organizations for information of an electronic document
Mask blank, transfer mask, and film denseness evaluation method
  Randomly Featured Patents
Semiconductor device and method of making same
Computer enclosure and I/O interface apparatus
Baseboard and molding system
Three spoke audio speaker
Method of producing a tube of ultra-high strength steel having remarkably improved ductility and toughness
Refrigerator handle mounting arrangement
Electronic device and method for managing its keyboard
Hydrophilic polyurethanes, preparation thereof and fiber sizes containing the same
Method for producing a microelectronic component of sandwich construction
Alternative health care machine