Patent application number | Description | Published |
20100003917 | COMMUNICATION SYSTEM - A communication system according to the present invention includes a transmitter for applying a transmission signal to a human body as an electric field, and a receiver for receiving the transmission signal by detecting the electric field via the human body. The receiver includes a reception electrode which faces the human body, a resonance circuit formed of a resonance inductor and a resonance capacitor, and a coupling capacitor for capacitively coupling the reception electrode and the resonance circuit. | 01-07-2010 |
20100009628 | DATA COMMUNICATION SYSTEM - A data communication system includes a transmission medium such as a human body for transmitting an information signal via an electric field, a mobile device including a sender for imparting the electric field in which the information signal is modulated to the transmission medium, a stationary device including a receiver for detecting the electric field via the transmission medium and demodulating the electric field into the information signal, a floor cover arranging the stationary device and also being contacted by the transmission medium, in which the floor cover has a communication area contacted by the transmission medium where a data communication is performed between the mobile device and the stationary device, and the communication area is in a state of being electrically floating with respect to the floor cover. | 01-14-2010 |
20100029203 | COMMUNICATION APPARATUS - A communication apparatus includes a transmitter configured to supply an information signal as an electric field to a transmission medium; a receiver configured to detect the electric field through the transmission medium to acquire the information signal; an insulating casing that accommodates at least one of the transmitter and the receiver; and a filling member that is arranged at least one of between the casing and the transmitter and between the casing and the receiver. | 02-04-2010 |
20100184373 | INFORMATION TERMINAL DEVICE - A mobile phone includes a display unit for visually confirming the information and an input unit for inputting the information. The display unit includes a display element, and the input unit includes an operation button. The mobile phone contains an electrode pair formed of a human side electrode and an external electrode for human body communication inside the casing. The mobile phone has the external electrode disposed around the display unit, and the human side electrode disposed around the input unit. | 07-22-2010 |
20100304671 | ELECTRONIC APPARATUS FOR ELECTRIC FIELD COMMUNICATION - A casing contains a circuit substrate. A signal electrode for transmitting and/or receiving an electronic field signal is arranged on a first surface side of the casing. The signal electrode is electrically connected to a conductor, which is an apparatus component, of the circuit substrate. A battery and a reference electrode having an electric field reference potential, which are apparatus components, are arranged on the second surface side of the casing. The sum (Cst) of a capacitance between the signal electrode and the transmission medium and a capacitance between the apparatus component and the transmission medium generated while the first surface is facing the transmission medium is approximately equal to the sum (Cgt) of capacitances between the apparatus components and the transmission medium generated while the second surface is facing the transmission medium. | 12-02-2010 |
20110021141 | ELECTRONIC DEVICE FOR ELECTRIC-FIELD COMMUNICATION - Provided is an electronic device for electric-field communication which is not easily affected by static electricity when electrostatically charged and is capable of maintaining sufficient performance. The electronic device for electric-field communication of the invention is an electronic device used as a transmitter | 01-27-2011 |
20110199079 | CURRENT SENSOR AND BATTERY WITH CURRENT SENSOR - A current sensor includes a magnetic detection element having a resistance value changed by applying inductive magnetic field from measurement target current, a magnetic core provided in the vicinity of the magnetic detection element, and a coil generating magnetic field attenuating the inductive magnetic field. A constant level current in a predetermined range of output voltage of the magnetic detection element flows in the coil, and the measurement target current is detected on the basis of the output voltage of the magnetic detection element. | 08-18-2011 |
20110294420 | COMMUNICATION SYSTEM - A communication system includes a transmitter that applies an electric field, obtained by modulating an information signal for wideband communication, to a transmission medium. The transmitter includes a transmission electrode, a transmission circuit that outputs the information signal for the wideband communication, and a first band controller that controls a band of the information signal for the wideband communication. When the transmission medium is in contact with the transmission electrode and the transmission medium and the transmission electrode are capacitively coupled to each other, the first band controller performs control to provide a band that is necessary for a receiver to perform demodulation for the wideband communication, and when the transmission medium is not in contact with the transmission electrode, the first band controller performs control to provide a narrower band than the band that is necessary for the wideband communication. | 12-01-2011 |
20110294421 | COMMUNICATION SYSTEM - A communication system according to the present invention includes a transmitter | 12-01-2011 |
20120263985 | CURRENT SENSOR - A current sensor includes a magnetic balance sensor and a switching circuit. The magnetic balance sensor includes a feedback coil which is disposed near a magnetic sensor element varying in characteristics due to application of an induction field caused by measurement current and which produces a canceling magnetic field canceling the induction field. The switching circuit switches between magnetic proportional detection and magnetic balance detection. The magnetic proportional detection is configured to output a voltage difference as a sensor output. The magnetic balance detection is configured to output, as a sensor output, a value corresponding to current flowing through the feedback coil when a balanced state in which the induction field and the canceling magnetic field cancel each other out is reached after the feedback coil is energized by the voltage difference. | 10-18-2012 |
20130057275 | CURRENT SENSOR - A current sensor includes a magnetic balance sensor including a feedback coil that is disposed in the vicinity of a magnetic sensor element whose characteristics are changed by an inducted magnetic field from a current to be measured and generates a cancellation magnetic field for offsetting the inducted magnetic field, a shunt resistant that is connected in series with a current line for circulating the current to be measured, and a switch circuit that switches to magnetic balance detection at the time of a small current and switches to shunt resistance detection at the time of a large current. | 03-07-2013 |
20130127456 | MAGNETIC BALANCE TYPE CURRENT SENSOR - A magnetic balance type current sensor includes: a magnetic detection bridge circuit of which output varies due to an induced magnetic field from a current wire; a magnetic field attenuation unit that attenuates the induced magnetic field that acts on a magnetoresistive effect element; and a feedback coil which generates a cancel magnetic field that cancels the induced magnetic field in accordance with the output of the magnetic detection bridge circuit, and through which a current corresponding to the current to be measured flows when it enters a balanced state in which the cancel magnetic field and the induced magnetic field cancel each other, wherein the feedback coil is provided in such a manner that a direction of the cancel magnetic field that acts on the magnetic field attenuation unit is opposite to a direction of the induced magnetic field that acts on the magnetic field attenuation unit. | 05-23-2013 |
20130156072 | ELECTRICAL STORAGE DEVICE TEMPERATURE MEASURING METHOD - An internal impedance of an electrical storage device is measured by using a signal of a frequency which ions in the electrical storage device are difficult to follow (e.g., a frequency equal to or higher than 10 kHz), and an internal temperature of the electrical storage device is calculated from a measured value of the internal impedance. | 06-20-2013 |
20130300404 | CURRENT SENSOR - A first magnetic sensor and a second magnetic sensor are disposed so that the main sensitivity axis direction of the first magnetic sensor is oriented in the direction of an induction magnetic field from a current flowing through a current line, the main sensitivity axis direction of the second magnetic sensor is oriented in a direction opposite to the direction of an induction magnetic field from the current flowing therethrough, the individual main sensitivity axis directions of the first and second magnetic sensors are oriented in a same direction, and the individual sub-sensitivity axis directions of the first and second magnetic sensors are oriented in the same directions as or directions opposite to the directions of the sub-sensitivity axis components of the induction magnetic fields to which the first and second magnetic sensors are individually subjected from a current flowing through an adjacent current line adjacent to the current line. | 11-14-2013 |
20130307534 | CURRENT SENSOR - A current sensor includes first and second magnetic sensors that are placed around a current line through which a current flows so that the current line is positioned therebetween, and that detect an induction field generated by the current. Each of the first and second magnetic sensors has a main sensitivity axis and a sub-sensitivity axis. The direction of the main sensitivity axis of each of the first and second magnetic sensors is oriented in a direction that is not orthogonal to the direction of the induction field. The directions of the main sensitivity axes of the first and second magnetic sensors are oriented in the same direction and the directions of the sub-sensitivity axes are oriented in the same direction, or the directions of the main sensitivity axes are oriented in opposite directions and the directions of the sub-sensitivity axes are oriented in opposite directions. | 11-21-2013 |
20140097826 | CURRENT SENSOR - A current sensor includes first and second current paths each including a first conductive portion and second and third conductive portions extending in the X direction from both ends of the first conductive portion, and being neighboring and apart in the Y direction; and first and second magnetoelectric conversion elements arranged with the first conductive portion of the first current path interposed therebetween, and having sensitive axes along the Y direction. The second and third conductive portions of each of the first and second current paths are apart in the Z direction. The second conductive portion of the second current path is arranged in the Y direction with respect to the first and second magnetoelectric conversion elements. Perpendicular lines from the center line of the second conductive portion of the second current path to the first and second magnetoelectric conversion elements have the same direction and equivalent lengths. | 04-10-2014 |
20150022196 | CURRENT SENSOR - A current sensor includes a folded-shaped current path including a pair of arm portions extending in parallel with each other, and a pair of magnetoelectric conversion elements provided so as to sandwich therebetween a symmetric axis passing between the pair of arm portions, the pair of magnetoelectric conversion elements being used for detecting magnetism caused by a current passing through the pair of arm portions, wherein a half-bridge circuit in which the pair of magnetoelectric conversion elements is series-connected and a signal is able to be extracted from a connection point between the pair of magnetoelectric conversion elements is formed, and sensitivity axes of the pair of magnetoelectric conversion elements are oriented in a same direction and sensitivity-influencing axes of the pair of magnetoelectric conversion elements are oriented in a same direction. | 01-22-2015 |