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9019131 Terminal and method for executing function using human body communication  
Methods and apparatus for human body communication are provided. A communication signal for transmission through the human body is generated. The communication signal is transmitted when the...
8988254 Ultra-low power wakeup circuit device  
An ultra-low power wakeup circuit device includes a keyboard, a key scan circuit, a storage unit, and a comparator unit. The key scan circuit sequentially outputs scanning signals from the first...
8963696 Apparatus for performing key control with reduced key matrix pin count  
An apparatus for performing key control includes an integrated circuit (IC) arranged to detect a key press according to some input/output signals of a key matrix, where the input/output signals...
8963745 Apparatus and scanning method for key input apparatus  
A key input includes a keypad device and a micro controller unit. The keypad device has a matrix consisted of first signals lines, second signal lines, and switches located in corners which are...
8917192 Portable terminal having keypad  
A portable terminal has a keypad. The portable terminal includes the keypad including a plurality of key buttons in a predetermined pattern and forming an antenna pattern by using devices...
8912930 Capacitive touch keyboard  
A capacitive touch keyboard includes a sensor layer, ground plane, a flexible sensed body, and a sensing circuit. The sensor layer includes a substrate and a key sensing cell which disposed on the...
8884791 Keypad scanning with radio event isolation  
Apparatus and methods for scanning a keypad of a communications device in a manner that tends to minimize interference with transceiver operation, such as a RF transceiver. In one embodiment, a...
8872676 Systems and methods for switching  
In one embodiment, a capacitive switching system may include a plurality of capacitive switches and at least one processor. Each of the capacitive switches may include an activation surface offset...
8866642 Uniquely identifiable keys for electronic keyboards  
An electronic keyboard including a plurality of keys arranged as a matrix, each key including a plunger, and a conductive element on the bottom of the plunger, the conductive element having a...
8842025 Method of setting specific scan codes for manual input device  
A method of setting specific scan codes for a manual input device includes the steps of establishing a transmission channel between the manual input device and a scan code register of a computing...
8836665 Handheld electronic device with text disambiguation and selective disabling of frequency learning  
A handheld electronic device includes a reduced QWERTY keyboard and is enabled with disambiguation software. The device provides output in the form of a default output and a number of variants....
8786470 Wireless keyboard and computer system using the same  
A computer system includes a wireless keyboard, a reader, and a computer. The wireless keyboard includes an antenna, an array of keys, a storage unit, a scanning unit, and a processing unit. The...
8766824 Electronic apparatus and method of detecting input  
An electronic apparatus includes a detection circuit having at least a first contact point, a second contact point and a third contact point; an input key unit changes states of the individual...
8760321 Method for detecting and processing key scan codes of computer keyboard  
A method for detecting and processing key scan codes of a computer keyboard is disclosed. At least one scan code table is established for a computer device in advance and is stored in a scan code...
8754790 Input device with ghost key suppression  
An input device with ghost key suppression includes a switch module, a comparator, an exchange unit, a bias voltage resistor, and a processing module. The switch module includes a plurality of...
8749407 Method and system for detecting hidden ghost keys on keyboard matrix  
The present invention discloses a method and system for detecting hidden ghost keys on a keyboard matrix. The keyboard matrix is composed of multiple rows crossing with multiple lines that form...
8711025 Method for configuring analog-to-digital converter keys and non-transitory machine readable medium storing program code executed for performing such method  
A method for configuring a plurality of analog-to-digital converter (ADC) keys includes: utilizing a processor for determining a plurality of divided-voltages respectively corresponding to the...
8704683 Input unit of portable terminal, portable terminal using the same, and operation method thereof  
A portable terminal includes: a key row including a reference resistor, switches separately connected to the reference resistor, and a plurality of resistors connected to the switches,...
8692694 Method to detect and recover from stuck keys on an electronic device keyboard  
A method of detecting and recovering from stuck keys on an electronic device keyboard comprises receiving one or more messages by a processor based upon a predetermined periodic scan rate and each...
8648736 Key input device  
A key input device for data input means of a device is provided. The key input device includes a first terminal for outputting a key input signal, a second terminal spaced apart from the first...
8564539 Handheld electronic device with text disambiguation employing advanced text case feature  
A handheld electronic device includes a reduced QWERTY keyboard and is enabled with disambiguation software. The device provides an improved text case feature. The device provides output in the...
8564460 Keyboard device and method of identifying a key operation  
A keyboard device includes multiple key switches, a scan memory that temporarily stores a result obtained by scanning keyboard as scan data, a confirmed data memory that stores a confirmed key...
8515740 Handheld electronic device and method for disambiguation of compound text input and that employs N-gram data to limit generation of low-probability compound language solutions  
A handheld electronic device includes a reduced QWERTY keyboard and is enabled with disambiguation software that is operable to disambiguate compound text input. The device is able to assemble...
8493327 Handheld electronic device with text disambiguation and selective disabling of frequency learning  
A handheld electronic device includes a reduced QWERTY keyboard and is enabled with disambiguation software. The device provides output in the form of a default output and a number of variants....
8477049 Efficiently embedding information onto a keyboard membrane  
Methods and systems for efficiently embedding information in a keyboard membrane. Information can be embedded in the keyboard membrane by integrating an information embedding circuit with a switch...
8471733 Two-wire connection to a key matrix in a mobile device  
A first current is driven through a first current path from a first common node, through a key matrix, and to a second common node when a key is pressed. A first measurement of the first current...
8442578 Mobile personal services platform for providing feedback  
Methods, systems, and apparatus, including computer program products, for generating feedback. In one aspect, a method includes receiving sensor data from a plurality of sensors, wherein at least...
8384566 Pressure-sensitive keyboard and associated method of operation  
An apparatus is provided that includes a processor to at least perform or cause the apparatus to at least perform a number of operations. These operations include receiving pressure-measurement...
8368565 Power saving method in sleep mode and keyboard controller using the same  
The invention relates to a power saving method in a sleep mode and a keyboard controller using the same. The method is adapted for a triangular-type scan keyboard controller including a plurality...
8350730 Keyboard scan  
Methods, apparatuses, and computer-readable media for scanning a keyboard are disclosed. Actuation of each of the keys electrically couples one of a plurality of first lines and one of a plurality...
8346295 Dual-mode keypad for a mobile device  
In accordance with the teachings described herein, systems and methods are provided for implementing a dual-mode keypad for a mobile device. The keypad may operate in a telephony mode and a...
8339292 Key operation device and mobile terminal device  
Disclosed is a key operation device for detecting an open/close state of key switches using row and column signal lines. The key switches include: 1st to 4th key switches each corresponding to a...
8330628 Keyboard for hand-held devices  
A hand-held electronic device has a keyboard with a plurality of keys, each key having a substantially flat contact surface extending to the sides of each key. One of the sides of the key is beveled.
8314720 Terminal and method for executing function using human body communication  
Provided is a method and a terminal for executing a function of a terminal according to data transmitted and received through a human body, which includes detecting a touch in a human body...
8314723 Ghost key detecting circuit and related method  
A ghost key detecting circuit includes at least first and second scan lines, at least first and second return lines, a plurality of switch elements, and a level detecting circuit. The level...
8284078 Control method and control system  
An exemplary control method includes the following steps. Judging if a hot key is pressed. Updating a data in a data field when the hot key is pressed. Judging if a first function key is pressed....
8284080 System and method of scanning an array of sensors  
Aspects of the invention relate to a method and apparatus for scanning an array of sensors. More particularly, the invention is directed towards scanning an array of sensors to accurately...
8279093 Apparatus for detecting bus connection  
An apparatus for detecting bus connection is provided for determining whether an electrical connector of a peripheral device is connected to an electrical connection port. In the apparatus, a...
8274411 Circuit arrangement and method for the operation of a circuit arrangement  
A circuit arrangement (1) comprises a current source (10), a comparator (50) and a control device (90). The current source (10) serves for supplying a light-emitting diode (41). The comparator...
8274410 Data input interface and method for inputting data  
The invention relates to a data input interface arranged to input data comprising a first set of keys, wherein all or a majority of the keys is adapted to indicate an input of a first set of...
8269655 Key control circuit, electronic apparatus, portable device, and key control method  
Key control for a key matrix circuit having a plurality of keys is provided to reduce power consumption in key searching caused by unintended key pressing. In key control on the key matrix circuit...
8264231 Switch circuit  
A switch circuit includes: a first charge/discharge circuit having a fixed first time constant; a second charge/discharge circuit having a second time constant associated with the operation...
8264383 Group keypads in compliance with standard keyboard installation  
A group keypad structure in compliance with a standard keyboard installation includes group keypads corresponding to characters of a standard keyboard input method; for example, the structure...
8265926 Handheld electronic device and method for disambiguation of compound text input and that employs N-gram data to limit generation of low-probability compound language solutions  
A handheld electronic device includes a reduced QWERTY keyboard and is enabled with disambiguation software that is operable to disambiguate compound text input. The device is able to assemble...
8264384 Keyboard control circuit  
A keyboard control circuit for a keyboard having P keys includes an array module that includes P key switches, and a key-matrix having N scan lines that intersect M return lines to form N×M...
8258985 Scanning circuit and scanning method for keyboard  
A scanning circuit includes n input ports K1˜Kn arranged in n rows L1˜Ln; and m−2 output ports W2˜(m−1) arranged in m columns P1˜Pm. The n rows and the m columns define a switch matrix including...
8253604 Keyboard scanning circuit  
A keyboard scanning circuit, comprising N wires, and [(2N−1)+(2N−1−1)N] switches divided into two switch groups, therein N is a natural number. Each switch includes a first contact and a second...
8248275 Key coding circuit  
A key coding circuit includes N keys, a signal processing unit, a bus, and a ground wire, and each key includes an input end and a ground end electrically connected to the ground wire. The signal...
8248276 Scanning circuit and scanning method for keyboard  
A scanning circuit includes n rows L1˜Ln, 2n columns P1-1˜P1-n and P2-1˜P2-n, and the n rows L1˜Ln and the n columns P1-1˜P1-n cooperatively form a switch matrix comprising n*n switches S1-1˜Sn-n,...
8237658 Handheld electronic device with text disambiguation employing advanced text case feature  
A handheld electronic device includes a reduced QWERTY keyboard and is enabled with disambiguation software. The device provides an improved text case feature. The device provides output in the...