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7619544 |
BIOS password security using modified scan codes
A BIOS password security technique includes first logic operable to extract a down scan code from a keyboard input queue, the down scan code having a most significant bit; second logic operable to...
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7612690 |
Method and apparatus for scanning a key or button matrix
An improved key matrix scanning technique conducts a first pre-scan on a first array of connections in a key matrix to identify any activated keys or buttons associated with the first array. A...
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7525453 |
Computer system with enhanced range passive wireless keyboard
A wireless keyboard and reader combination comprises a keyboard having a plurality of keys, an antenna, and a plurality of passive transponder circuits, employing backscatter transmission coded in...
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7522070 |
Method and apparatus for high performance key detection with key debounce
A system for detecting a key with key debounce including a circuit for detecting a key activation; a first counter coupled to the circuit and a clock for testing the key activation for a first...
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7504967 |
Portable electronic device with keyboard
A keyboard ( 32, 1230 ) for a handheld electronic device ( 100, 1100, 1200 ) comprising a row of keys ( 102 ) wherein each of said keys ( 102 ) represents at least two alphanumeric characters and...
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7453376 |
Method, apparatus, and computer-readable medium for key press determination
A system, method, and computer-readable medium having instructions for determining a key press from a current keyboard state at a current time is described. The system stores signals indicative of...
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7446676 |
Self-scan programmable keypad interface
Various embodiments are disclosed relating to a self-scan programmable keypad interface. In an example embodiment, an apparatus is provided that includes a processor, and a keypad interface...
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7443317 |
Input device
An input device is provided. An input device includes a plurality of input keys; a voltage setting unit; a switching unit; a detecting unit; and a control unit. When the switching unit selects one...
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7425904 |
Keypad circuit with electrostatic discharge protection
A keypad device having a circuit of electrostatic discharge (ESD) protection is disclosed. The circuit has n and m numbers of column conductive lines and row conductive lines formed on the print...
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7423556 |
Method and device for key input in mobile terminal
A method for inputting characters in a mobile terminal is provided. The method involves the steps of detecting any key pressing event on a key input unit, storing the detected key pressing event...
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7420480 |
Methods, systems, and computer program products for iteratively providing feedback via a user interface for multi-character, multi-mode alphanumeric data entry
Disclosed are methods, systems, and computer program products for receiving input from a multi-function momentary switch by providing feedback from a user interface for each function associated...
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7420479 |
Universal keyboard controller data protocol
A keyboard system which includes a keyboard assembly and an embedded controller. The keyboard assembly includes a keyboard matrix and a keyscan controller coupled to the keyscan matrix. The keyscan...
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7417566 |
Sequential two-key system to input keyboard characters and many alphabets on small keypads
This invention discloses a sequential two-key system to input letters of the English alphabet and of many world languages, numbers, punctuation marks, page-control characters, line-control...
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7417565 |
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.
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7403188 |
Handheld electronic device with text disambiquation employing advanced word frequency learning feature
A handheld electronic device includes a reduced QWERTY keyboard and is enabled with disambiguation software. An enhanced word frequency learning feature is provided. The device provides output in...
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7391343 |
Input device
An input device includes an input circuit including a plurality of key switches connected in parallel to one another, and a control circuit including a key input terminal to which a first terminal...
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7389454 |
Error detection in user input device using general purpose input-output
A method and apparatus are disclosed for using a general purpose input-output (GPIO) interface to test a user input device such as a wireless keyboard or mouse. Operation of key-scan logic can be...
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7388536 |
Remote control unit, electronic device and method for controlling electronic device
A remote control unit, an electronic device and a method for controlling an electronic device using the same are provided. The remote control unit includes: a key input part including a menu key...
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7388520 |
Apparatus and method for decoding a key press
Disclosed is an apparatus for decoding a key press. The apparatus includes an interface that performs conversion between parallel data and serial data and generates an interrupt when a key is...
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7379394 |
System and method for modifying button functionality
An electronic device comprising a first pusher located in a first position on the electronic device, wherein actuation of the first pusher causes initiation of a first operational sequence; a...
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7375655 |
Keyboard without ghost keys
A keyboard without ghost keys has a circuit which includes a microprocessor in which a plurality of I/O lines form a keyboard scanning matrix. Two of the I/O lines on the matrix cross to define a...
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7362244 |
User programmable input apparatus with a keyboard
A user programmable input apparatus with a keyboard comprises several keys with one or more special keys thereof on the keyboard for input operations, a microprocessor to receive inputs from the...
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7356626 |
Method and device for signal protection
Method for decreasing the existence of externally detectable revealing signals, so-called {umlaut over (R)}Ö{umlaut over (S)}, from keyboards ( 1 ), e.g. for computers, where the keyboard is fed...
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7345598 |
Electronic device with keyboard system and method of detecting key conditions thereof
The present invention provides an electronic device and its keyboard system that includes a plurality of keys, a keyboard matrix and a program. The keys include a plurality of first type keys and a...
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7339499 |
Keypad signal input apparatus
Keypad apparatus for registering signals corresponding to data that a user enters by pressure on keys of an array in a surface extending in two dimensions. The elements of first and second sets of...
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7330135 |
Method and a device for reading out keyboard keys
A method and a device for reading out keys of a keyboard. The read-out is realised by randomly generating a scanning pattern comprising for each row and column a read-out value to be applied on the...
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7330134 |
Key construction method for a keyboard and the keyboard thereof
A key constructing method for a keyboard has M scan lines*N return lines. The electrical interconnects of the M scan lines*N return lines can generate numerical electrical contacts of A 1 to A M*N...
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7310054 |
Computer keyboard assembly having separable top and bottom modules
A computer keyboard assembly includes a bottom module connected separably to a top module. The bottom module has a top wall formed with through holes registered respectively with key caps mounted...
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7295188 |
Modified computer keyboard number pad
The present invention provides for a number pad section of a keyboard having a plurality of digit keys, a plurality of arithmetic operation keys, and a Tab key operational by the ring or little...
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7271743 |
Switch arrangement and a switch matrix structure for a keypad
A switch arrangement comprises a photoconductor to be illuminated. The switch arrangement also comprises a conductor which is intended to further transmit light escaping from the photoconductor and...
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7256769 |
System and method for text entry on a reduced keyboard
A system and method for efficient Asian character text input into a reduced keypad machine such as a word processor, telephone, hand-held computer, or personal computer is provided. The system...
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7256714 |
Keyboard with reduced keying ambiguity
When an array of proximity sensors is used as a keyboard, it can provide an ambiguous output if a user's finger overlaps several keys or if liquid is spilled on the keyboard. This ambiguity is...
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7248867 |
Locking/unlocking a portable electronic device
A portable electronic device operable in a first mode and a second mode, comprising: input means having a first key and a second key, wherein, when the device is in the first mode, the device is...
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7242340 |
Input device and input method
First and second resistors are given a common length L and arranged to have a constant equal resistance per unit length. A plurality of switch elements are made conductive between the resistors. A...
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7242323 |
Electronic device having touch sensor
A variable capacitance unit is formed between one portion of a human body and an opposed electrode facing it through a casing of a robot toy (electronic device) when the one portion of the human...
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7218250 |
Method and apparatus for keyboard control with programmable debounce and jog
A method for providing debounce and jog control for a keyboard includes loading a first electronic storage register with a value indicative of a debounce period for the keyboard and loading a...
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7215257 |
Depression judgment device
A depression-judgment apparatus which properly judges the ON/OFF of a key switch without being affected by chattering that occur when key switch is turned ON is provided. The depression-judgment...
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7170430 |
System, method, and computer program product for single-handed data entry
A system, method and computer program product that permits a user, using the fingers of a single hand, to produce defined outputs such as generating characters for text input and executing...
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7167107 |
Keypad array having reduced number of input/outputs and method for generating same
The invention concerns a method ( 200 ) of generating an array ( 100, 300, 400 ) having a reduced number of input/outputs ( 114, 314, 414 ). The method includes the steps of, for each array row...
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7161505 |
A/D converter with comparators and low-power detection mode for resistive matrix keyboards
An apparatus and method is disclosed for providing a fast, low power consumption, detection of at least one depressed key in a resistive matrix keyboard. The common contact of each row of a...
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7158056 |
Method and apparatus for scanning a key or button matrix
An improved key matrix scanning technique conducts a first pre-scan on a first array of connections in a key matrix to identify any activated keys or buttons associated with the first array. A...
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7158055 |
Key input circuit, power supply control apparatus, and power supply control method
A key switch 102 formed by arranging a plurality of key contacts SW 11 , SW 12 , SW 21 , SW 22 , . . . at cross points of a key matrix is provided with a power supply control key (SW 11 ), and a...
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7151432 |
Circuit and method for a switch matrix and switch sensing
Aspects of a switch matrix circuit are provided. In accordance with a circuit aspect, a plurality of switches are organized in a row and column configuration. Coupled to the plurality of switches...
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7145481 |
Method and apparatus for trusted keyboard scanning
A keyboard scan engine integrated on a chipset to initiate a keyscan process. The keyboard scan engine detects a key depression. When in a trusted mode, the keyboard scan engine transmits a key...
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7133668 |
Wireless human input device and transmission-quality test method
A test method for testing a wireless human input device being totally implemented in program codes which are built in the input device is disclosed. A step (A) is to start a test of transmission...
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7123170 |
System and method for a data-input array capable of being scanned using a reduced number of signals
A system and method for scanning a data-input array (e.g., a keyboard or keypad) using a reduced number of signals is disclosed. Specifically, a switch array is disclosed comprising a plurality of...
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7109892 |
Device for activating an electronic control unit
A device for activating a control unit is proposed. It includes at least one operating element operable by a user as well as analog encoding means assigned to the operating element. To generate an...
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7102542 |
Apparatus and method for determining output signals according to pressure and depressing time
An apparatus and a method for determining output signals according to pressure and depressing time mainly includes a timer, a scanner and a keyboard connecting electronically to the timer and the...
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7095339 |
Apparatus for data input and key detection method thereof
An apparatus for data input. The apparatus comprises a sensing circuit for a plurality of keys, outputting an interruption signal and a corresponding group of data bits when one of the keys is...
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7091885 |
Handheld electronic device with text disambiguation
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. The...
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