The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 02, 2018
Filed:
Mar. 31, 2017
Synaptics Incorporated, San Jose, CA (US);
Guozhong Shen, San Jose, CA (US);
Ozan Ersan Erdogan, Saratoga, CA (US);
Mandar Kulkarni, San Jose, CA (US);
Taehee Cho, San Jose, CA (US);
Synaptics Incorporated, San Jose, CA (US);
Abstract
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.