Data compression method and apparatus

Data compression method and apparatus

Data compression system

Data compression using run length encoding and statistical encod

Data compressor

Data control circuits

Data display keyboard with angular positioning

Data encoding and/or decoding

Data encoding method and system employing two-thirds code rate w

Data encoding/decoding circuit

Data entry and decoding system for scripted data

Data entry devices

Data entry keyboard apparatus

Data format converting apparatus for use in a digital data proce

Data handling system using a sequential approximation encoding a

Data input device for electronic device

Data input keyboard

Data input system including a keyboard having no moving parts

Data input system using a split keyboard

Data processing system having optically linked subsystems, inclu