Reprogramable multi-host, multi-character set keyboard

Abstract

A system having a keyboard capable of supporting multiple hosts and changing character sets. A first host processor communicates with a display. A keyboard has a plurality of independently moveable physical keys with each letter of an entire alphabet accessible by a single strike actuation of one of the plurality of keys. The keyboard uses twelve or fewer keys provide single strike access to the entire alphabet. A map defining functions of the keys appears on the display responsive to a prompting action of a user's hand without requiring any finger to leave the keys that provide access to the alphabet. The map defines the spatial relationship of each function relative to a home position of a finger.

What is claimed is: 
     
         1 . A system comprising:
 a first host processor in communication with a display;   a keyboard with a plurality of independently moveable physical keys;   wherein each letter of an entire alphabet is accessible by a single strike actuation of one of the plurality of keys,   wherein twelve or fewer keys provide single strike access to the entire alphabet;   a map defining functions of the keys that appears on the display responsive to a prompting action of a user's hand without requiring any finger to leave the keys that provide access to the alphabet; and   wherein the map defines the spatial relationship of each function relative to a home position of a finger.   
     
     
         2 . The system of  claim 1  wherein the map appears responsive to an action of a thumb on a spacebar. 
     
     
         3 . The system of  claim 2  wherein the prompting action is at least one of a lateral swipe, a press and hold exceeding a threshold of time, a vertical swipe, at least one tap on the spacebar surface without actuating the space character function, and a press on a corner of the spacebar. 
     
     
         4 . The system of  claim 1  wherein the map appears responsive to a prompting action of at least one finger on at least one key wherein the action is at least one of a lateral swipe, a vertical swipe, at least one tap on the key surface without actuating a character function, and concurrent actuation of two or more predefined keys. 
     
     
         5 . The system of  claim 1  wherein the map disappears automatically responsive to an actuation of a next key. 
     
     
         6 . The system of  claim 1  wherein the map correlates to an arrangement of the physical keys on the keyboard, and wherein the map visually defines which functions are associated with each finger. 
     
     
         7 . The system of  claim 1  wherein the keyboard provides access to a plurality of layers of functions assigned to the same plurality of physical keys, each layer represented by a different visual map. 
     
     
         8 . The system of  claim 7  wherein a user navigates the plurality of layers by a navigation action of a hand on the keyboard, and wherein responsive to the prompting action the map displayed corresponds to a presently active layer, and a strike on a physical key location returns the corresponding function marked on the map. 
     
     
         9 . The system of  claim 8  wherein at least some of the layers correspond to different languages. 
     
     
         10 . The system of  claim 8  wherein at least some of the layers correspond to different character layouts. 
     
     
         11 . The system of  claim 1  further comprising: a second host processor wherein a user switches amongst the plurality of host processors by an action of a hand on the keyboard. 
     
     
         12 . The system of  claim 1  wherein the action is a chord comprising two or more keys pressed concurrently. 
     
     
         13 . The system of  claim 12  wherein the prompting action is the chord pressed for a defined amount of time. 
     
     
         14 . The system of  claim 7  wherein the visual map of the current layer shows those functions accessible via a single strike of one finger, and wherein there is one key for each finger, and wherein the map shows locations on the surface of each key that select each function. 
     
     
         15 . A system comprising:
 a host processor in communication with a display;   a keyboard with a plurality of independently moveable physical keys;   wherein eight keys provide single strike access to an entire alphabet, each key having a home location for one of a user's eight fingers; and   a map that appears on the display, the map depicting a function currently available at each location on a surface of a respective key relative to the home location.   
     
     
         16 . The system of  claim 15 , wherein the function at each location is selected by detecting a finger with a multi-touch sensor. 
     
     
         17 . The system of  claim 15  wherein the keyboard provides access to a plurality of layers of functions assigned to the same plurality of physical keys. 
     
     
         18 . The system of  claim 1  wherein an algorithm interprets a pattern of signal strength on at least two sensor pads to infer an intended character, even when the intended character may have a weaker signal at its pad location. 
     
     
         19 . The system of  claim 1  wherein a spatial boundary between character locations can be changed via a software mapping. 
     
     
         20 . The system of  claim 1  wherein the software mapping may be defined on an application program that allows a user to alter the mapping via a graphical user interface.