|
JPS57136986A
|
|
Method of removing waste heat
|
|
US4260852A
|
|
Up/down scanning digitizing apparatus and method
|
|
US4227044A
|
|
Pen status system for digitizer pen
|
|
US4210775A
|
|
Method and apparatus for digitizing the location of an instrument relative to a grid
|
|
US4185165A
|
|
Low noise system and method for sequentially sensing induced signals in digitizer grid conductors
|
|
US4022971A
|
|
Method and apparatus for converting the location and movement of a manually controlled instrument into corresponding electrical signals
|
|
US3983322A
|
|
Method and apparatus for converting the location and movement of a manually controlled instrument into corresponding electrical signals
|
|
US3886311A
|
|
Electrical writing pen and sensor
|
|
CA1025996A
|
|
Method and apparatus for decoding and reproducing graphic information conveyed over a telephone quality communications link
|
|
US3851097A
|
|
Method and apparatus for conveying graphic information over a telephone quality communications link
|
|
US3767858A
|
|
Apparatus for converting the position of a manually operated instrument into an electrical signal
|
