Cirrus Logic Inc.

John Anthony Breslin

John L Melanson

Hamed Sadati

Sushanth Hegde

John Bruce Bowlerwell

David Paul Singleton

Gordon James Bates

Toru Ido

Clive R Graham

Pre-conditioning circuitry for pre-conditioning a node of a circuit to support a change in operation of the circuit, wherein the circuit is operative to change a state of the node to effect the change in operation of the circuit, and wherein the pre-conditioning circuitry is configured to apply a voltage, current or charge directly to the node to reduce the magnitude of the change to the state of the node required by the circuit to achieve the change in operation of the circuit.

Pre-conditioning a node of a circuit

The present disclosure relates to circuitry for detecting connection of a plug of an audio accessory device to a socket of an intermediate cable that is connected to a host device, wherein the plug of the accessory device is of a different type than the socket of the intermediate cable. The circuitry comprises a monitoring unit comprising a first terminal configured to be electrically connected to a first socket contact of the socket that is in electrical contact with a first plug contact of the plug when the plug is fully received in the socket; and a second terminal configured to be electrically connected to a second socket contact of the socket that is in electrical contact with a second plug contact of the plug when the plug is fully received in the socket. The monitoring unit is configured to: detect a first impedance of a first signal path from the first terminal; detect a second impedance of a second signal path from the first terminal; and detect a third impedance of a third signal path from the second terminal, wherein the circuitry is configured to output a signal indicative of detection of connection of the plug to the socket in response to detection by the monitoring unit that the detected first, second and third impedances do not correspond to expected first, second and third impedances.

Circuitry for detecting jack plug insertion or removal

This application relates to computing circuitry () for analogue computing. A plurality of current generators () are each configured to generate a defined current (I, I, . . . I) based on a respective input data value (D, D, . . . D). A memory array (), having at least one set () of programmable-resistance memory cells (), is arranged to receive the defined currents from each of the current generators at a respective signal line (). Each set () of programmable-resistance memory cells () includes a memory cell associated with each signal line that, in use, can be connected between the relevant signal line and a reference voltage so as to generate a voltage on the signal line. An adder module () is coupled to each of the signal lines to generate a voltage at an output node () based on the sum of the voltages on each of the signal lines.

Computing circuitry

The present disclosure relates to voltage regulator circuitry. The voltage regulator circuitry comprises an output device configured to provide a regulated output voltage and a controllable shunt device configured to provide a current path from the output device for a shunt current. The shunt current is variable according to a control signal supplied to the controllable shunt device.

Voltage regulator circuitry

Circuitry comprising: a capacitor; first circuitry; and second circuitry, wherein the circuitry is operable to couple the capacitor to the first circuitry when the first circuitry is active, and to couple the capacitor to the second circuitry when the first circuitry is inactive or is not actively using the capacitor.

Circuitry comprising a capacitor

The present disclosure relates to circuitry for detecting at least partial removal of an audio accessory plug from a corresponding socket. The circuitry comprises a monitoring unit comprising a first terminal configured to be electrically connected to a first socket contact of the socket that is in electrical contact with a first plug contact of the plug when the plug is fully received in the socket. The monitoring unit is configured to monitor a first impedance of a first signal path coupled to the first terminal, and the circuitry is configured to output a signal indicative of detection of at least partial removal of the plug from the socket in response to detection by the monitoring unit of a first predetermined sequence of impedance states of the first signal path.

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Edinburgh, United Kingdom

John Anthony Breslin