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
Roll of continuous web of optical film laminate and production method therefor
Method and system for blocking hazardous information
Floor standing rack
Antibody recognizing turn structure in amyloid .beta.
Aqueous flowable concentrate compositions of a microencapsulated dinitroaniline herbicide
Exposure method, exposure apparatus, and method for producing device
Hair motion compositor system for use in a hair/fur pipeline
  Randomly Featured Patents
Global planarization of multiple layers
Semiconductor components and methods of manufacturing semiconductor components
Apparatus for using optical tweezers to manipulate materials
Method and apparatus for audit trail logging and data base recovery
Synchronous BiCMOS logic gate
Handheld color measurement instrument
Microvalve assemblies and related structures and related methods
An apparatus using a pivoted weight mechanism for lifting the tone arm of a record player
Heteroaryl aminoguanidines and alkoxyguanidines and their use as protease inhibitors
Apparatus and method for obtaining three-dimensional positional data from a two-dimensional captured image