Multi-touch mechanical-capacitive hybrid keyboard

• US 9,235,270 B2
• Filed: 02/26/2013
• Issued: 01/12/2016
• Est. Priority Date: 02/26/2013
• Status: Active Grant

• Current Assignee: Synerdyne Corporation
• Original Assignee: Synerdyne Corporation
• Inventors: Knighton, Mark S., DeLaurentis, Peter J., Islam, Mydul R.
• Primary Examiner(s): Phan, Hai
• Assistant Examiner(s): BALSECA, FRANKLIN D
• Application Number:
  US13/778,016
• Publication Number:
  US 20140241780A1
• Time in Patent Office: 1,050 Days
• Field of Search: 341 20- 35, 400/485, 400/486, 400/487, 400/489
• US Class Current: 1/1
• CPC Class Codes: G06F 1/1664 Arrangements for ergonomically adjusting the disposition of keys of the integrated keyboard
• CPC Class Codes: G06F 3/02 Input arrangements using manually operated switches, e.g. using keyboards or dials
• CPC Class Codes: G06F 3/0205 Lever arrangements for operating keyboard cursor control keys in a joystick-like manner
• CPC Class Codes: G06F 3/0216 Arrangements for ergonomically adjusting the disposition of keys of a keyboard for keyboards integrated in a laptop computer G06F1/1664
• CPC Class Codes: G06F 3/0233 Character input methods
• CPC Class Codes: G06F 3/0235 using chord techniques G06F3/0234 takes precedence
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/04892 Arrangements for controlling cursor position based on codes indicative of cursor displacements from one discrete location to another, e.g. using cursor control keys associated to different directions or using the tab key arrangements for controlling cursor position based on coordinate signals G06F3/038
• CPC Class Codes: H01H 2217/012 Two keys simultaneous considerations

Abstract

A touch type keyboard with an array of mechanical keys. Each key has a plurality of capacitive sensors to detect a finger'"'"'s location on the surface of the key. The array provides single strike access to an entire alphabet, while reducing hand motion. The invention overcomes previous conflicts, to combine wide finger-spacing with closer reach to each character. One embodiment also includes cursor control functions embedded within the home row, and layered labeling to improve visual simplicity.

Claims

1. A touch type keyboard comprising:

an array of tactile keys defining a home row of locations that allow each of 8 fingers to rest concurrently in the course of touch-typing, and providing single stroke access to every letter of a full alphabet through unique locations on the array; and

a controller that records a timestamp for each of a plurality of key actuation events at different key locations,

wherein the array of tactile keys comprises mechanical keys, each key having a surface for actuation by a finger and a plurality of capacitive sensors to detect the finger'"'"'s location on the surface of the key,

wherein each key surface has a plurality of the unique locations which provides access to all letters on that key, each unique location occupying a defined area of the surface of the key;

wherein actuation of the mechanical key and detection of the finger'"'"'s location selects a character at the finger'"'"'s location;

wherein the actuation of at least one of the home row locations while actuating a second location, alters a function of a third location in the array to a different keyboard function based, at least in part, on a temporal sequence of the timestamps; and

wherein the sequence can be evaluated after the events have occurred.

2. The keyboard of claim 1 wherein the concurrent actuation of at least two locations maintains the altered function of the third location only during the concurrent actuation.

3. The keyboard of claim 1 wherein the concurrent actuation of at least two locations activates a latched state which maintains the altered function of the third location for some period after the concurrent actuation.

4. The keyboard of claim 1 wherein the second location and the third location having the altered function are the same location.

5. The keyboard of claim 1 wherein an alphabetic function location is altered to a cursor key function at a same location.

6. The keyboard of claim 5 wherein a set of cursor key functions is arranged in an inverted T pattern of locations.

8. The keyboard of claim 5 wherein actuating an additional location on the array while operating a cursor key produces a cursor function that allows selection of a range of text.

9. The keyboard of claim 1 wherein the altered function is at least one of copy, paste, undo, redo, go to beginning of line, go to end of line, go to next word, select next word go to previous word, select previous word, go to next sentence, go to previous sentence, select next sentence, select previous sentence, go to next paragraph, select next paragraph, go to previous paragraph, select previous paragraph, page up, page down, go to start of page, go to end of page, go to start of document, go to end of document, an edit control, a cursor selection control for a zone of text, play, pause, fast forward, rewind, skip forward, skip backward, volume up, volume down, mute, and a media control.

10. The keyboard of claim 1 wherein numeric functions are associated with a same finger used on a typewriter keyboard.

11. The keyboard of claim 10 wherein symbol functions associated with number keys are associated with a same finger used on at least one of a QWERTY or AZERTY typewriter keyboard.

12. The keyboard of claim 1 integrated with a computer having a display.

7. A touch type keyboard comprising:

an array of tactile keys defining a home row of locations that allow each of 8 fingers to rest concurrently in the course of touch-typing, and providing single stroke access to every letter of a full alphabet through unique locations on the array; and

a controller that measures an amount of time between actuation events at two different key locations;

wherein the array of tactile keys comprises mechanical keys, each key having a surface for actuation by a finger and a plurality of capacitive sensors to detect the finger'"'"'s location on the surface of the key,

wherein each key surface has a plurality of the unique locations which provides access to all letters on that key, each unique location occupying a defined area of the surface of the key;

wherein actuation of the mechanical key and detection of the finger'"'"'s location selects a character at the finger'"'"'s location;

wherein the actuation of at least one of the home row locations while actuating a second location, alters a function of a third location in the array to a different keyboard function based, at least in part, on the time measured,

wherein an alphabetic function location is altered to a cursor key function at a same location,

a set of cursor key functions is arranged in an inverted T pattern of locations, and

wherein the inverted T pattern overlays the cursor function up with an ‘

I’

location, down with a “

K”

location, right with an “

L”

location and left with a “

J”

location.

13. A touch type keyboard comprising:

an array of mechanical keys, each key having a surface for actuation by a finger and a plurality of capacitive sensors to detect the finger'"'"'s location on the surface of the key, the array defining a home row and a rest location for each of eight fingers on the home row;

wherein each key surface has a plurality of discrete locations which provide access to all characters on that key, each discrete location occupying a defined area of the surface of the key;

the array having discrete locations corresponding to all the letters of an alphabet and all numbers 0 through 9;

wherein actuation of the mechanical key and detection of the finger'"'"'s location selects a character at the finger'"'"'s location;

wherein all alphanumeric characters are accessible from the rest locations on the home row, or an immediately adjacent discrete location;

and wherein a distance between adjacent finger rest locations is greater than a distance between a finger rest location and any alphanumeric character location associated with that same finger;

wherein the distance between any two locations is defined as the center to center distance.

14. The keyboard of claim 13 wherein the distance between adjacent finger rest locations is at least 10% greater than a distance between a finger rest location and any alphanumeric character location associated with that same finger.

15. The keyboard of claim 13 wherein the distance between a finger rest location and any other alphanumeric character location associated with that same finger, is between 7 mm and 18 mm.

16. The keyboard of claim 13 wherein the distance between adjacent finger rest locations is greater than 14 mm.

17. The keyboard of claim 13 wherein all symbol characters present on at least one of a QWERTY or AZERTY keyboard are accessible from the rest locations on the home row, or an immediately adjacent discrete location.

18. The keyboard of claim 13 wherein the keys provide a tactile feel.

19. The keyboard of claim 13 integrated into a computer having a display.

20. A touch type keyboard comprising:

an array of tactile keys defining a home row and a rest location for each of eight fingers on the home row;

wherein the array of tactile keys comprises mechanical keys, each key having a surface for actuation by a finger and a plurality of capacitive sensors for detecting the finger'"'"'s location on the surface of the key,

wherein each key surface has a plurality of discrete locations which provide access to all characters on that key, each discrete location occupying a defined area of the surface of the key;

wherein actuation of the mechanical key and detection of the finger'"'"'s location selects a character at the finger'"'"'s location;

the array having discrete locations corresponding to all the letters of an alphabet and all numbers 0 through 9;

wherein multiple functions reside at a same location; and

wherein at least one location has at least three layers of functions;

wherein indicia for a first layer of alphabet functions is in a first color different from a background color,

wherein at least one other layer of functions is distinguished by at least one of dimensionally engraved or raised markings that are not colored differently from the background

wherein indicia for three layers of functions are permanently marked on a physical surface of the tactile keys.

21. The keyboard of claim 20 wherein at least one layer is distinguished by indicia of a different color than both the indicia corresponding to a first layer and the background color.

22. The keyboard of claim 20 wherein at least one layer is distinguished by indicia of a different scale than the markings on the first layer.

23. The keyboard of claim 20 integrated into a computer having a display.