Abstract: 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.

Abstract: An estimation apparatus includes: an image information obtainer that obtains image information of a captured image of a driver; a first detector that detects face information indicating facial behavior of the driver, based on the image information; a first reliability calculator that calculates first reliability; a second detector that detects body information indicating body movement of the driver, based on the image information; a second reliability calculator that calculates second reliability; a weight setter that, when the face information and the body information are detected, sets a first weight corresponding to the face information and a second weight corresponding to the body information based on the first reliability and the second reliability; and an estimator that estimates drowsiness of the driver based on the face information weighted by the first weight and the body information weighted by the second weight.

Abstract: A measurement device includes: a first cover electrode provided on a steering wheel; a second electrode (a second cover electrode or a first seat electrode) provided on a front surface section of a driver's seat or on the steering wheel; a grip detection circuit electrically connected to the first cover electrode via a first high pass filter; and an electrocardiographic detection circuit electrically connected to at least the first cover electrode via a first low pass filter and electrically connected to the second electrode.

Abstract: An input device includes an operation part, an operation commencement trigger part, and a detection circuit. The operation part includes an electrostatic capacity-type slider. The operation commencement trigger part is provided at a predetermined location on the slider. The operation commencement trigger part is provided to commence a first operation including a flick operation on the slider. When the detection circuit detects that the operation commencement trigger part has been touched, the detection circuit enables detection of a first operation on the slider.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: The present invention improves reception quality in an electronic apparatus including plural antenna devices. For this purpose, first antenna device (8) of electronic apparatus (7) according to the present invention includes ground organizer (10); feeding unit (11) placed on ground organizer (10); first antenna conductor (12) with its one end connected to feeding unit (11); and second antenna conductor (13) and third antenna conductor (14) both branch connected to the other end of first antenna conductor (12). The sum of the length of first antenna conductor (12) and that of second antenna conductor (13) is substantially (¼+n/2) times the wavelength of a signal in the first frequency band, and additionally the sum of the length of second antenna conductor (13) and that of third antenna conductor (14) is substantially (½+m/2) times the wavelength of a signal in the second frequency band.

Abstract: The antenna device has an antenna element, a transistor circuit connected to the antenna element, and an inductance circuit earthed to a shunt between the antenna element and the transistor circuit. The electronic device has the antenna device and a radio circuit connected to the transistor circuit.

Abstract: An antenna device and a mobile radio apparatus using the same antenna device are disclosed. The antenna device includes a ground plate of which short side has a length “a”, a first and a second antenna elements, and a switching circuit. The switching circuit selects whether the first and the second antenna elements are used as a balanced type of antenna or the first antenna is used as an unbalanced type of antenna and the second antenna element is left as a passive element. Assume that wavelength ?1 corresponds to the fundamental frequency of the antenna elements, and wavelength ?2 corresponds to the max. frequency in a usable frequency band, and the antenna elements have electrical length ? which is set at ?1/4. Assume that the first antenna element has physical length L1 smaller than electrical length ?, and the second antenna element has physical length L2. The sum of L1 and L2 is shorter than the short side length “a”, and a half of “a” is smaller than ?2/4.

Abstract: An antenna is provided which includes a radiation conductor; a basebody provided on the radiation conductor, and including a dielectric section made of a dielectric material and a magnetic section made of a magnetic material; and a power supplier connected to the radiation conductor, wherein the magnetic section is provided on a part where a current distribution of the radiation conductor is higher, and the dielectric section is provided on a part where a voltage distribution of the radiation conductor is higher.

Abstract: An antenna 4 comprises a radiation conductor 7; a basebody 6 provided on the radiation conductor 7, and including a dielectric section 9 made of a dielectric material and a magnetic section 10 made of a magnetic material; and a power supplier 8 connected to the radiation conductor 7, wherein: the magnetic section 10 is provided on a part where a current distribution of the radiation conductor is higher, and the dielectric section 9 is provided on a part where a voltage distribution of the radiation conductor is higher. Accordingly, an antenna for use in various radio communications apparatuses can be miniaturized.