Parade Technologies, Ltd.

Taiyo Yuden Co., Ltd.

Naoki Hirakawa

Masayuki Sato

Takashi Ishiguro

Tetsuo Hironaka

Kazuya Tanigawa

Ryan Lester Tan Co

Hiroaki Toguchi

A touch sensing system includes a capacitive sense array. Each sensor has a unique location type. The system includes a capacitance measurement circuit coupled to the array, which measures capacitance changes at each sensor. The system also includes a memory device that stores three or more adjustment parameters. Each parameter corresponds to one or more location types, and is used in computing virtual sensor values. The system receives measured capacitance changes corresponding to a touch on the array and identifies a first sensor whose measured capacitance change is a local maximum. The system determines a location type of the first sensor. According to the location type, the adjustment parameters corresponding to the location type, and the measured capacitance changes, the system computes virtual sensor measurements. The system then computes a centroid of the touch using the measured capacitance changes and the virtual sensor measurements.

Virtual sensor mirroring for circular touch panels

The various implementations described herein include systems, methods and/or devices used to enable underwater non-conductive touch tracking. An exemplary method is performed at a touch sensitive device and includes: detecting submersion of a capacitive sense array (CSA), including detecting increased electrode responses from at least a subset of a plurality of sensor electrodes of the CSA that exceed a predetermined electrode response criterion. The method further includes: (1) identifying one or more normalization factors for the CSA based on the detected increased electrode responses from the subset of the plurality of sensor electrodes, and (2) normalizing, using the one or more normalization factors, the CSA to form a substantially uniform baseline response across the CSA. The method further includes during the submersion, and subsequent to the normalizing, identifying one or more subsequent electrode responses that differ from the substantially uniform baseline response by at least a threshold amount.

Underwater non-conductive touch tracking

FPGAs and MPLDs, which are conventional programmable semiconductor devices, have had poor cost performance and did not suitably take long signal lines into account. To solve this, a flip-flop is built into each MLUT block comprised of a plurality of MLUTs, each MLUT comprising a memory and an address-data pair. With respect to the adjacent line between adjacent MLUTs, alternated adjacent line are introduced, while in the case of interconnects between non-adjacent MLUTs, dedicated distant line and, furthermore, a torus interconnect network are provided.

Semiconductor device

Growing community of inventors

Kawasaki, Japan

Naoki Hirakawa