Resources Contact Us Home
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
Reliability fire pressure switch
Haworthia plant named `AMSTERDAM`
Method of predicting a motion vector for a current block in a current picture
Process for producing polyols
Metal colloidal particles, metal colloid and use of metal colloid
LCD television set capable of external connection with application processor
Liquid crystal display and method of driving the same
  Randomly Featured Patents
Stirling engines
Applying configuration group information to target configuration information
Method for reducing hook effect in an immunoassay
Self-propelled road milling machine
Transit devices and system including a slow protocol filter and methods of transmitting information within a transit device or system using a slow protocol filter
Surgical fastener and cutter with mimicking end effector
Expansion joint system
Method and system for controlling virtual machine bandwidth
Increased bandwidth thin film resonator having a columnar structure