Method for reducing the redundancy of binary character sequences

Details Method for reducing the redundancy of binary character sequences Method for reducing the redundancy of binary character sequences

1982-07-09

1985-11-19

Krass, Errol A.

Boots, shoes, and leggings

346141, 364519, 364523, G06F 1504

Patent

active

045546371

ABSTRACT:
A method for reducing the redundancy of binary character sequences which are utilized in matrix printing assigns coordinates to each image point in a character matrix and determines and stores data corresponding to the difference between image point coordinates which are necessary to print a particular character. The differences are stored in terms of magnitude and direction of movement within the character matrix in order to control operation of a printing head for printing the character. The code words for each image point contain an operation byte which may direct a "step" or a "skip" coordinate change. A further reduction is achieved by additional information in the form of a multiplication byte which effects multiplication of specified coordinate steps and by an end byte which signifies the end of a particular character. The method may also effect a constant image point displacement by means of a change-over byte so that the printing can be undertaken in cursive script or shadow script.

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