Topic
Keymat
About: Keymat is a research topic. Over the lifetime, 26 publications have been published within this topic receiving 852 citations.
Papers
Patent•
6 Jun 2002
TL;DR: In this article, a proximity-based mutually capacitance-sensitive touchpad that is disposed directly beneath a keypad keymat of a mobile telephone is presented, where the keypad posts actuate mechanical switches underneath the touchpad.
Abstract: A proximity-based mutually capacitance-sensitive touchpad that is disposed directly beneath a keypad keymat of a mobile telephone, wherein posts associated with each key pass through a mutually capacitance-sensitive sensor electrode grid of the touchpad such that the keypad posts do not interfere with touchpad detection and tracking of a pointing object that moves along the keypad surface, to thereby enable touchpad data entry, cursor control, and scroll bar control on a display of the mobile telephone, wherein the keypad posts actuate mechanical switches underneath the touchpad.
317 citations
Patent•
12 Dec 2003TL;DR: In this article, an assembly for a mobile terminal, or a portable electronic device such as a cellular telephone or a personal digital assistant, is provided that includes a chassis with a locking perimeter and at least one covering.
Abstract: An assembly for a mobile terminal, or a portable electronic device such as a cellular telephone or a personal digital assistant, is provided that includes a chassis with a locking perimeter and at least one covering, such as a front and/or a rear cover, with a locking edge. A cover may include a void or window for viewing a display of the electronic device and a keymat to control the electronic device. The chassis may include a convex groove in which a bracelet or wrap may be included.
130 citations
Patent•
20 Aug 2001TL;DR: A keypad of a mobile telephone handset comprises a keymat (17) beneath which are disposed capacitive sensing plates (20, 21) as discussed by the authors, which can be used in a conventional manner to enter alphanumeric data by pressing keys or as a touch pad by sliding a finger over the surface of the keymat.
Abstract: A keypad (7) of a mobile telephone handset comprises a keymat (17) beneath which are disposed capacitive sensing plates (20, 21). The keypad may be used in a conventional manner to enter alphanumeric data by pressing keys (18) or as a touch pad by sliding a finger over the surface of the keymat (17).
114 citations
Patent•
17 Jul 2007TL;DR: In this article, a new apparatus and method for providing and using piezoelectric sensing with force detection as user input means possibly in combination with touch sensing methods in a user interface module (e.g., touch pad, keyboard, keymat, touch screen, etc.).
Abstract: The specification and drawings present a new apparatus and method for providing and using piezoelectric sensing with force detection as user input means possibly in combination with touch sensing methods in a user interface module (e.g., touch pad, keyboard, keymat, touch-screen, etc.).
78 citations
Patent•
17 Aug 2001TL;DR: An integrated keymat as mentioned in this paper includes a plurality of individual emissive keypads, each having a legend or symbol provided thereon, which can be selectively activated to form an alphanumeric symbol or pattern.
Abstract: An integrated keymat or keyboard to be used on an electronic device. The integrated keymat includes a plurality of individual emissive keypads each having a legend or symbol provided thereon. The emissive keypad has a light-emitting source and a plurality of electrodes, operatively connected to a power source, to activate the light-emitting source in order to illuminate the keypads, wherein the connection of the electrodes is controllable so that one or more keypads can be illuminated causing the key indicating marks on said one or more keypads to become more visible. Furthermore, the light-emitting source may include a plurality of segments of pixels which are individually addressable so that they can be selectively activated to form an alphanumeric symbol or pattern. Moreover, the integrated keymat further comprises one or more lens-like pads provided on the keypads to make the legend or symbol on the keypads more visible.
69 citations
Performance Metrics
| Year | Papers |
|---|---|
| 2014 | 1 |
| 2011 | 3 |
| 2010 | 2 |
| 2009 | 3 |
| 2008 | 2 |
| 2007 | 1 |