Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Techniques for applying modulation constraints to data using periodically changing symbol mappings










Image Number 3 for United States Patent #7030789.

Techniques are provided for applying modulation constraints to data by using periodically changing symbol mappings to replace certain prohibited error prone data patterns. Initially, user data in a first base is mapped to integers of a second base using a base conversion technique. The integers in the second base correspond to symbols. Subsequently, periodically changing symbol mappings are performed during which prohibited symbols generated during base conversion are mapped to permitted symbols. The periodically changing symbol mappings occur in multiple phases, and the prohibited symbols are different in each phase. The resulting data is processed by a precoder in some embodiments.








 
 
  Recently Added Patents
Flat panel crystal display employing simultaneous charging of main and subsidiary pixel electrodes
Light transformation particle and photobioreactor
Flashlight
Modified binding proteins inhibiting the VEGF-A receptor interaction
Register files for a digital signal processor operating in an interleaved multi-threaded environment
Segmented display panel and camera with segmented display
Analog to digital converter with increased sub-range resolution
  Randomly Featured Patents
Adjustable and expandable device for locking gear-shifting lever of motor vehicle
Adjustable thinning scissors
Feed device for feeding mail items of various dimensions
Barbeque grill kettle
Hexahydropyrazolo[4,3,-c]pyridine metabolites
Electric surgery apparatus for supplying electric power suitable for subject tissue
Spandex of a particular composition and process for making same
Controlled collapse teatcup liner
Circuits and methods for testing memory cells along a periphery of a memory array
Vibration-isolating coupling including an elastomer diaphragm for scanning electron microscope and the like