Synaptics Corporation

Mandar Kulkarni

Guozhong Shen

Ozan Ersan Erdogan

Adam L Schwartz

Bob Lee Mackey

Ty Bao Lien

Taehee Cho

Nan Wang

Pascale El Kallassi

Shubha Ramakrishnan

Yongqian Tang

An integrated sensing device comprising a force sensor and fingerprint sensor disposed on different portions of a flexible circuit. The fingerprint sensor is disposed on a first side of a first portion of the flexible circuit and the force sensor is disposed on a second portion of the flexible circuit. The flexible circuit is configured such that the first portion is over the second portion. The fingerprint sensor includes fingerprint sensor electrodes disposed on the first side of the first portion. The force sensor comprises a compressible layer disposed between a second side of the first portion and a first side of the second portion, and one or more one force electrodes.

Integrated fingerprint and force sensor

A device and system for automatically tracking a baseline input into a biometric sensor is provided. The device and system include a processing system with an amplifier having an input terminal and an output terminal for producing an output signal based on the input signal received by the input terminal. The processing system further includes at least one signal conditioning element coupled to the input terminal of the amplifier and configured to condition a compensation signal, and the processing system further includes a control circuit that adjusts one or more signal conditioning parameters of the at least one signal conditioning element based on the output signal of the amplifier. The at least one input signal received by the input terminal includes a combination of the at least one compensation signal and a signal from a first set of one or more receiver electrodes of the biometric sensor.

Finger detection with auto-baseline tracking

An input device for capacitive sensing includes: a plurality of sensor electrodes, the plurality of sensor electrodes comprising a plurality of transmitter electrodes and a plurality of receiver electrodes, wherein the plurality of transmitter electrodes is configured to be driven by sensing signals and the plurality of receiver electrodes is configured to receive detected signals corresponding to respective sensing signals driven onto the plurality of transmitter electrodes; and a processing system, configured to: determine which receiver electrodes of the plurality of receiver electrodes are covered by an input biometric object; and scan the input biometric object to determine features of the input biometric object, wherein scanning the input biometric object comprises performing a differential measurement for one or more receiver electrodes with other receiver electrodes providing a reference, based on detected signals received on the one or more receiver electrodes and the other receiver electrodes, wherein the other receiver electrodes providing the reference are all receiver electrodes of the plurality of receiver electrodes that are determined as being covered by the input biometric object.

Adaptive reference for differential capacitive measurements

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San Jose, CA, United States of America

Mandar Kulkarni