Various implementations relate to keyboard data communicated from a client device to a remote access manager. For example, the remote access manager may receive the keyboard data via a communication channel. The keyboard data may include key down states. The remote access manager may insert a key up state after each key down state in the received keyboard data to generate modified keyboard data.

A touch sensor includes electrodes that are serially arranged and a processor with multiple input terminals. The electrodes are grouped into first, second and third groups of electrodes. Each electrode of the first group is coupled with a corresponding input terminal of the processor. The electrodes of the second group are sequentially coupled with the input terminals of the processor by way of odd numbered electrodes of the first group. The electrodes of the third group are sequentially coupled with the input terminals of the processor by way of even numbered electrodes of the first group. Each of the electrodes, other than the electrodes on the ends, is triggered simultaneously with at least one of its neighboring electrodes to provide sensed signals to the processor.

Architecture for managing clutch height in an optical navigational device such as a computer mouse. In one embodiment for a mouse, a feature can be molded into the bottom case that limits the clutch height by occluding the reflected light to the image sensor when the device is lifted from the tracking surface. Tracking is disabled when the clutch height threshold is exceeded, and re-enabled when the device is brought under the distance clutch height threshold. The device includes firmware controlled algorithm adjustments to one or more correlation parameters. User interfaces may also be employed to implement various aspects of the embodiments discussed herein.

A method for inputting a Chinese phrase, and the said phrase includes 2- and 3-Chinese characters, if the phonetic code for inputting the said phrase is full Pinyin for the 1st character and abbreviation Pinyin for the 2nd and 3rd characters and the number of phrases for such a code is more than the presetting value, then the converted phonetic code combinations from the phrase dictionary database of the input method based on the said phonetic code will display on the input interface, that is full Pinyin is kept for the 1st character, all combinations of full Pinyin based on the abbreviation Pinyin are displayed for the 2nd character and abbreviation Pinyin is kept for the 3rd character.

An amending circuit of correcting bouncing misjudgment of a keyswitch includes a comparing unit, a predetermined voltage generating unit and a controlling unit. The comparing unit has a first input terminal, a second input terminal and an output terminal. The first input terminal is adapted to receive a triggering signal generated by the keyswitch. The predetermined voltage generating unit is electrically connected to the second input terminal and adapted to generate a first predetermined voltage. The controlling unit is electrically connected to the output terminal. The controlling unit is adapted to determine whether to execute polling application according to a comparison result of the comparing unit, and to generate a confirming signal while a polling result of the polling application is kept at a specific level. The confirming signal is used by an external processor to confirm that the keyswitch is actually triggered.

A heating, ventilation and air conditioning (HVAC) controller, a method of receiving signals from a keypad and an HVAC system incorporating the controller or the method. In one embodiment, the HVAC controller includes: (1) a keypad having at least first and second banks, (2) a reference signal source configured to generate a time-varying untransformed reference signal and provide the untransformed reference signal to the first bank, (3) transformation circuitry configured to transform the untransformed reference signal into a transformed reference signal and provide the transformed reference signal to the second bank and (4) a processor having interrupt pins coupled to corresponding keys of both the first and second banks and a further interrupt pin coupled to receive one of the untransformed and transformed reference signal.

A heating, ventilation and air conditioning (HVAC) controller, a method of receiving signals from a keypad and an HVAC system incorporating the controller or the method. In one embodiment, the HVAC controller includes: (1) a keypad having at least first and second banks, (2) a reference signal source configured to generate a time-varying untransformed reference signal and provide the untransformed reference signal to the first bank, (3) transformation circuitry configured to transform the untransformed reference signal into a transformed reference signal and provide the transformed reference signal to the second bank and (4) a processor having interrupt pins coupled to corresponding keys of both the first and second banks and a further interrupt pin coupled to receive one of the untransformed and transformed reference signal.

The ergonomic computer keyboard is configured for use with a computer. The ergonomic computer keyboard is adapted for use with a person. The ergonomic computer keyboard is an interface device that enables a person to use the computer. The ergonomic computer keyboard comprises a housing and a key set. The key set is installed in the housing. The orientation of the key set is set such that the angle of attack of a finger to a key selected from the key set key is adjusted relative to a traditional computer keyboard. This adjusted orientation results in a more natural orientation of the hands to the key set relative to the traditional computer keyboard. The ordering of the indicia of each key in the key set is adjusted relative to the QWERTY ordering such that hand movements are minimized during the typing process.

A light guide is provided for illuminating innumerable constructions, but which is ideally suited for illuminating the keys of a keyboard. The light guide includes a translucent planar plate having a top, a bottom and sides. Further, the light guide includes one or more cavities which project upwardly into the translucent plate from its bottom surface. The cavities are hollow or filled with a translucent material so that the translucent plate and the one or more cavities form translucent interfaces where the cavities interface with the plate. The light guide also includes a reflector which covers the plate bottom and cavity openings. Light produced by a light source, preferably in the form of one or more LEDs, is transmitted to and through the translucent plate until striking the plate-cavity interfaces where the light is refracted into the cavities' interior or reflected upwardly to the plate's upper surface.

A capacitive keyboard that can detect a key that has been depressed and the depressed amount thereof with high accuracy is provided. The capacitive keyboard includes a drive circuit 11 that alternatively switches the voltage of each of drive lines M from an L-level to an H-level, a sensing circuit 12 that is connected to each of sensing lines N and that selects one of the sensing lines N to detect the voltage generated in the selected sensing line, and a control circuit 15. The control circuit 15 includes a storage unit 44 including storage areas corresponding to keys, a storage control unit 42 that acquires the voltage generated in the sensing line and that stores the acquired voltage in a storage area corresponding to a key, and a correction unit 43 that corrects, if one of the keys is operated, the voltage generated as a result of an operation of the one of the keys by using voltages stored in storage areas corresponding to other keys. Thus, even if a plurality of keys are depressed at the same time, detection with high accuracy can be realized.