Abstract: An electronic device, operating as a USB host, has an embedded processor and a system memory, connected by a memory bus. A host controller integrated circuit does not need to master the system memory, but instead acts purely as a slave. The embedded processor is then adapted to write the data to the host controller integrated circuit in the form of transfer-based transactions.

Abstract: An apparatus and method are disclosed for providing a power switch array with adjustable current rating power switches. A plurality of current rating power switches is provided that connects a power supply unit to a plurality of device ports. A power switch array controller is provided that adjusts an adjustable current rating in each of the plurality of adjustable current rating power switches. Each of the plurality of adjustable current rating power switches is adjustable to a selected number of current values. The power switch array controller dynamically adjusts the current ratings in the adjustable current power switches as required by the current requirements of the device ports.

Abstract: A method of matrix sensing using delay-based capacitance sensing, including using X-axis lines as active lines for capacitance measurements and using Y-axis lines as a disturbance to identify the location of a touch in a key matrix is disclosed. A sensing signal is applied to the X-axis lines, and a disturbance signal is applied to the Y-axis lines. If a location is touched, cross-capacitance is reduced, which is measured by sweeping data along the X-axis lines.

Abstract: A method of matrix sensing using delay-based capacitance sensing, including using X-axis lines as active lines for capacitance measurements and using Y-axis lines as a disturbance to identify the location of a touch in a key matrix is disclosed. A sensing signal is applied to the X-axis lines, and a disturbance signal is applied to the Y-axis lines. If a location is touched, cross-capacitance is reduced, which is measured by sweeping data along the X-axis lines.

Abstract: A bus station in the form of a hardware dongle, operates in conjunction with a USB Device running suitable software. When the bus station determines that a bus host is connected to a first bus communication port thereof, it acts as a transceiver to allow conventional bus communications between said bus host and a bus device connected to a second bus communication port thereof. When the bus station determines that a bus device running suitable software is connected to the first bus communication port thereof, it acts as an alternate host to allow bus communications between said bus device connected to the first bus communication port and a bus device connected to a second bus communication port.

Abstract: The present disclosure provides an addressable light emitting diodes (LED) architecture that is able to control a plurality of LEDs individually. The present disclosure further provides a method of controlling the operation of at least one chain of serially connected LEDs.

Abstract: 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 determine actuated sensors on a contact-sensitive surface. In one embodiment, three sets of sensing lines can be incorporated into the sensing area for ghost-free detection of up to two keys. Further in other embodiments, n sets of sensing lines can be incorporated into the sensing area for ghost free detection of up to n?1 keys.

Abstract: Integration of a FIFO memory, FIFO threshold and a timer, along with the other components of a touch screen system allows the number of interrupts to the touch screen controller to be reduced while allowing all point data to be acquired and preserved. In the first touch-detect event, an interrupt is issued to inform the host. The touch screen controller then automatically acquires data as long as touch is detected without host intervention. A FIFO threshold defines the minimum number of data points in FIFO memory before it issues an interrupt to inform the host that data is ready to be fetched. The timer is started once touch is detected. On every single data acquired, the timer is reset. In the event where touch is no longer detected, the timer keeps on counting until the time-up limit is reached. In this event, the touch screen controller will issue an interrupt informing the host the pen is lifted. The host then checks whether there is still data left in FIFO memory to be read.