Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Panasonic Automotive Systems Co., Ltd.

Motoyuki Okayama

Hidenori Kitamura

Hiroshi Iwai

Tsuyoshi Nishio

Yuta Yamamoto

Masaki Tada

Susumu Fukushima

Motohiko Sako

Yu Nakashima

A drowsiness determination system includes a first acquirer, a second acquirer, a third acquirer, and a determiner. The first acquirer acquires vibration information indicating the vibration of a vehicle. The second acquirer acquires head information indicating a variation in the movement of the head of an occupant. The third acquirer acquires sitting height information indicating the sitting height of the occupant. The determiner determines whether the occupant is drowsy based on the head information and the sitting height information, when the vibration information indicates the occurrence of the vibration of the vehicle.

Drowsiness determination system and drowsiness determination method

A touch panel device includes a touch panel including first and second electrodes, an alternating-current (AC) signal source operable to input an AC signal into the first electrode, an inductive element electrically connected in series between the AC signal source and the first electrode, and a detection circuit operable to detect a change of a capacitance between the first electrode and the second electrode upon a touch of an object on the touch panel, based on a change of a signal output from the second electrode. This touch panel device can enhance detection sensitivity with a simple configuration.

Touch-panel device

An amplifying circuit with a bypassing function includes an input terminal to which a signal is input from an antenna, an amplifier connected to the input terminal, a first inductor connected between the input port and a ground, and a bypass circuit connected between the input terminal and the output port of the amplifier. The bypass circuit includes a first port connected to the input terminal, a second port connected to the output port of the amplifier, a switch, a capacitor, and a second inductor. The switch is connected in series between the first and second ports. The capacitor is connected in series to the switch between the first and second ports. The second inductor is connected in series to the switch and the capacitor between the first and second ports. Signal power is not reduced drastically even when the signal passes through the bypass circuit.

Amplifying circuit with bypass circuit, and electronic device using the same

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Osaka, Japan

Motoyuki Okayama