Resources Contact Us Home
System for compressed storage of 8-bit ASCII bytes using coded strings of 4 bit nibbles

Image Number 4 for United States Patent #4597057.

Standard ASCII coded text is divided into alpha, numeric, and punctuation tokens. Each token is converted to a string of four-bit nibbles. One nibble is coded to identify the type of token. Additional nibbles are coded to identify the location, if any, of a corresponding alpha or punctuation token in a global dictionary. If no corresponding alpha token is in the dictionary, an alpha token is divided into prefixed, suffixes, and a stem. The location of any prefixes in a table of prefixes, suffixes in a table of suffixes, and the number, and location of corresponding individual characters in a table, of the remaining stem are then coded and stored as part of the string of four-bit nibbles for the alpha tokens. Numeric tokens are stored as a string of four-bit nibbles in which the first nibble identifies the type of token, the next nibble the length, followed by a nibble for each of the digits.

  Recently Added Patents
Method for assembling a camera module, and camera module
Method and system for calibrating laser profiling systems
Reconfigurable barrel shifter and rotator
Switching device and electronic apparatus using the same
Adapter plate for use in mounting an audio/visual device or the like to a surface
Electronic hand-held device
Method of measuring a displacement amount for an automobile suspension assembly
  Randomly Featured Patents
Laser patterning of a carbon nanotube layer
Serving sector interference broadcast and corresponding RL traffic power control
Acellular red blood cell substitute
Data handling in IPSec enabled network stack
Magnetic recording device
Systems and methods for controlling insects under solid substrates
Riding toy
Internal-gear pump having a pinion with radial play
Percutaneously deployed vascular valves