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
DC/DC converter, power supply circuit, and semiconductor device
Receiver and transmitter receiver system
Tools and methods for yield-aware semiconductor manufacturing process target generation
Method of modified facies proportions upon history matching of a geological model
Method and system for coordinating client and host security modules
Active gate drive circuit
Magnesium metal-air battery
  Randomly Featured Patents
Therapeutic heating pads and covers therefor
Control device in a shutter for a camera
Parasiticidal new substituted thienopyranones
Chair bottom cover
Circuit element measuring apparatus and method for measuring a parameter of a DUT including a compensation network having an admittance characteristic
Operation input device and electronic equipment employing the same
Homepage creation and update program
Electrophotographic recording apparatus having lid with mechanism to retract exposing unit
Positioning-triggered handover
Support frame for an awning having a one-piece fabric cover