Synaptics (UK) Limited

Synaptics Corporation

Wacom Co., Ltd.

Geoffrey Foote

Gareth John McCaughan

David T E Ely

David W Gillespie

Julian Haines

Andrew Nicholas Dames

Robert J Bolender

Christopher John Silk

David Thomas Eliot Ely

James M C England

Ian P Collins

Andrew Errington

Malcolm Burwell

A user interface of a smart compact device employs a combination comprising a display screen in combination with an activating object that is capable of reporting X and Y position information in a first state and a second state. Selected data is displayed or hidden depending on whether the first state or second state is detected.

Method and apparatus for controlling a display of data on a display screen

A low-cost x-y digitizing system for use in consumer electronic devices, such as portable digital assistants, mobile telephones, web browsers and the like. The digitizer includes a resonant stylus, an excitation winding for energizing the resonant stylus and a set of sensor windings for sensing the signal generated by the stylus, from which the x-y position of the stylus is determined. A novel stylus design is described together with novel digitizer windings and novel excitation and processing circuitry.

Position sensor

A low cost x-y digitizing system is described for use in consumer electronic devices, such as portable digital assistants, mobile telephones, web browsers and the like. The digitizer includes a resonant stylus, an excitation winding for energizing the resonant stylus and a set of sensor windings for sensing the signal generated by the stylus, from which the x-y position of the stylus is determined. A novel stylus design is described together with novel digitizer windings and novel excitation and processing circuitry.

A low cost x-y digitising system is described for use in consumer electronic devices, such as portable digital assistants, mobile telephones, web browsers and the like. The digitiser includes a resonant stylus, an excitation winding for energising the resonant stylus and a set of sensor windings for sensing the signal generated by the stylus, from which the x-y position of the stylus is determined. A novel stylus design is described together with novel digitiser windings and novel excitation and processing circuitry.

An electric motor is described in which a position sensor is provided which generates a plurality of output signals each dependent upon the relative position of the rotor and the stator. These signals are processed to generate a set of commutation control signals for controlling the commutation of the drive current to the stator coils. In one embodiment, a phase shift can be electronically applied to each of the position sensor coils to adjust the timing of the switching in accordance with the motor's current speed and load demands. In another embodiment, these signals are also used in a servo-control loop, in order to control, for example, the speed and/or output torque of the motor.

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Cambridge, United Kingdom

Geoffrey Foote