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
Systems and methods for computer-aided fold detection
Systems and methods for providing a shared folder via television
Display screen with transitional icon
Sampling switch circuit that uses correlated level shifting
Battery loading and unloading mechanism
Navigating applications using side-mounted touchpad
Method and system for dynamic digital rights bundling
  Randomly Featured Patents
Electrical box support
Tool holder with misalignment compensating means
Air flow disruptor in yarn feeder
Method and apparatus for controlling and caching memory read operations in a processing system
Protective garment containing polybenzazole
Multiple function current-sharing charging system and method
Overlay accuracy measurement mark
Cross-connection network using time switch
Method and apparatus for an electron beam exposure system
Image capturing device and activation method therefor