A load control device may be used to control and deliver power to an electrical load. The load control device may comprise a control circuit for controlling the power delivered to the electrical load. The load control device may comprise multiple actuators, where each of the actuators is connected between a terminal of the control circuit and a current regulating device. The number of the actuators may be greater than the number of the terminals. The control circuit may measure signals at the terminals and determine a state configuration for the actuators based on the measured signals. The control circuit may compare the state configuration to a predetermined dataset to detect a ghosting condition.

A load control device may be used to control and deliver power to an electrical load. The load control device may comprise a control circuit for controlling the power delivered to the electrical load. The load control device may comprise multiple actuators, where each of the actuators is connected between a terminal of the control circuit and a current regulating device. The number of the actuators may be greater than the number of the terminals. The control circuit may measure signals at the terminals and determine a state configuration for the actuators based on the measured signals. The control circuit may compare the state configuration to a predetermined dataset to detect a ghosting condition.

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 detects the voltage generated in each of sensing lines N, and a control circuit 15 that detects, on the basis of the voltage value detected by the sensing circuit 12, the key that has been operated and the operation amount of the operated key. The sensing circuit 12 includes a peak hold circuit 32 that holds the peak value of the voltage that is input from a sensing line N over a predetermined period and an A/D conversion circuit 33 that converts the voltage held by the peak hold circuit 32 into a multi-stage digital voltage value.

A hybrid touch button, including: a touch display unit having a touch display area; a mechanical switch having a plurality of conductive contacts; and a control unit, having a power interface for coupling with a power source, a first interface coupled with the touch display area, a second interface coupled with the plurality of conductive contacts, and an output interface, wherein the control unit derives first input information from the first interface and second input information from the second interface, and determines an output configuration of the output interface according to the first input information and the second input information.

The present disclosure provides a method and a system for realizing a remote control based on a Bluetooth human interface device (HID) protocol, where the method for realizing the remote control based on the Bluetooth HID protocol includes: A: connecting a manipulation device with a remote device by a BLUETOOTH; B: mapping, by the manipulation device, a control key into a HID command by using the Bluetooth HID protocol and sends the HID command to the remote device, if the manipulation device receives an operation that a user presses the control key during the remote device executes a functional software; and C: translating, by the remote device, the HID command to a logic key and executing the logic key to realize the remote control after the remote device receives the HID command.

A data entry device including a housing including a top housing portion including key apertures, a plurality of data entry keys mounted in the housing to have data entry key depression travel paths in the housing, the plurality of data entry keys being associated with a substrate, which is disposed below the top housing portion and anti-tampering electrical conductors arranged between the top housing portion and the substrate thereby to prevent unauthorized access to the substrate.

An apparatus and method for selecting a keyboard key based on a position of a presence of a conductive object on a sensing device and a pre-defined area of the keyboard key. The apparatus may include a sensing device and a processing device. The sensing device may include a plurality of sensor elements to detect a presence of a conductive object on the sensing device. Multiple keyboard keys are assigned to pre-defined areas of the sensing device. The processing device is coupled to the sensing device using capacitance sensing pins, and may be operable to determine a position of the presence of the conductive object, and to select a keyboard key based on the position of the conductive object and the pre-defined areas of the sensing device.

A load control device may be used to control and deliver power to an electrical load. The load control device may comprise a control circuit for controlling the power delivered to the electrical load. The load control device may comprise multiple actuators, where each of the actuators is connected between a terminal of the control circuit and a current regulating device. The number of the actuators may be greater than the number of the terminals. The control circuit may measure signals at the terminals and determine a state configuration for the actuators based on the measured signals. The control circuit may compare the state configuration to a predetermined dataset to detect a ghosting condition.

The present subject matter relates to recognition of simultaneous key presses in a keyboard. The keyboard includes a first group of keys, which includes keys that are to be individually recognized when pressed simultaneously with at least one other key of the first group. Keys of a first sub-group of the first group are connected to key switches that are to be connected to general purpose input/output (GPIO) pins. Keys of a second sub-group of the first group are connected to key switches on at least one of mutually different columns and mutually different rows of a matrix of electrical interconnections. The second sub-group includes at least one key that is not a modifier key.

Various embodiments set forth techniques for erasure coding of replicated data blocks. The techniques include receiving, by a pre-designated node, data associated with an erasure coded strip from a first node; receiving, by the pre-designated node, a replica for a first data block; saving the replica in an erasure coded strip; and in response to a trigger condition, replacing, by the pre-designated node, the replica and at least one replica of a second data block with an error correction block.