| Patent application number | Description | Published |
|---|
| 20080258984 | Antenna, and wireless module, wireless unit and wireless apparatus having the antenna - In an antenna that has high sensitivity to frequencies of narrow bands and over a wide band and that can be small-sized, and in a wireless module, wireless unit and wireless apparatus using this antenna, the antenna is comprised of a transmission line, and variable capacitance means connected to this transmission line, and the variable capacitance means controls the resonant frequency. | 10-23-2008 |
| 20080266060 | TRANSMITTER AND WIRELESS SYSTEM USING THE SAME - When supplying a power from a base station to a terminal station on radio and a distance from a base station to a terminal station is long, it becomes impossible for the terminal station to rectify the power. The feature of the present invention is found in a wireless communication system in which the peak value and duty ratio of a transmission power are controlled simultaneously, keeping the transmission power of a base station below a fixed value, thereby allowing a voltage to be applied to a diode, which is a component of a rectifier circuit possessed by a terminal station, always in excess of a threshold voltage of the diode, and energy is exchanged between the base station and the terminal station below a limit power. | 10-30-2008 |
| 20080266183 | Skeleton equalizing antenna, RFID tag and RFID system using the same - The problems to be solved by the present invention are to provide an antenna which is applied to a wireless identification system wherein there is a long distance between a device to execute identification and a device attached to an object to be identified and which does not cause deterioration in aesthetic terms and covering of a meaningful symbol, and further to provide a wireless system using the antenna. According to the present invention, there are provided an antenna having a circularly polarizing function and a frequency equalizing function achieved by a grid structure having roughness and fineness around a feeding point and density which allows visible light to pass through, an RFID tag using the antenna, and an RFID system using the tag. | 10-30-2008 |
| 20090091456 | RFID tag - An RFID tag of the present invention is provided to suppress variations in the capacity component that occur during physical coupling between an antenna and a semiconductor chip as part of the manufacturing process. The RFID tag includes an antenna with a pair of electric contacts, draw-out conductors of the electric contacts, and an RFID chip with a pair of electric contacts, wherein the electric contacts of the antenna are encompassed to their corresponding electric contacts of the RFID chip, and draw-out electrodes are drawn out in an opposite direction to the facing direction overlapped direction). | 04-09-2009 |
| 20090153445 | Capacitive coupling-type transmitting and receiving circuits for information signal - A capacitive coupling-type transmitting and receiving circuit for information signal is provided in which attenuation of a signal on a non-contact transmission path via a capacitor and a change of voltage on the receiving side due to a slight change in capacitance are suppressed, modulation and demodulation processes of signals are unnecessary, and non-contact transmission which does not depend on the transmission rate is enabled. The capacitor is formed with a transmitting electrode on a transmission board and a receiving electrode on a display panel board, and an insulating member is interposed between the electrodes. The transmitting board comprises a transmission signal processing circuit which converts display data from an external signal source into a voltage signal. The display panel board comprises an impedance converter circuit and a reception signal processing circuit. | 06-18-2009 |
| 20090184950 | Power transmission circuit - Provided is a capacitor coupling type power transmission circuit in which a variation in receiving side voltage due to a variation in capacitance is suppressed to prevent an influence on a variation in load current in a display panel. An insulating board of the display panel is sandwiched by capacitive coupling electrodes formed on each of a transmitting side board and a board of the display panel, thereby forming capacitors. A non-contact transmission is performed by the capacitors. An alternating current voltage signal obtained by electrodes on a display panel side is rectified by a rectifier including diodes. A constant voltage circuit which is a shunt regulator including a diode array in which a resistor and a plurality of diodes are connected in series is provided to maintain a stabilized voltage irrespective of a variation in load in the display panel. | 07-23-2009 |
| 20090197529 | Communication system by electrostatic coupling and electromagnetic induction - A communication system by electrostatic coupling and electromagnetic induction includes: a first transmission part ( | 08-06-2009 |
| 20090251453 | IMAGE DISPLAY DEVICE - In order to restrain increase in frame area caused along with a larger number of channels to a minimum, there is provided an image display device that adopts a communication method in which a signal is transmitted/received with the use of electrostatic capacitance coupling. A first board includes: a tabular first power supply line, a tabular second power supply line, a semiconductor element, and a tabular first electrode group. A second board includes: a tabular second electrode group and a tabular common electrode. In a state where the first board and the second board are laid on each other, the first electrode group overlaps the second electrode group while one of the first power supply line and the second power supply line overlaps the common electrode. | 10-08-2009 |
| 20100026950 | IMAGE DISPLAY DEVICE - An image display device includes a display panel having plural pixels and a second board having a transmitting electrode, the display panel having a first substrate that is disposed so as to overlap the second board, each pixel having a pixel electrode and a counter electrode, and the counter electrode being formed in a planar shape and being commonly provided to the pixel electrodes of each pixel; the counter electrode being divided into a portion A corresponding to the transmitting electrode of the second board and a portion B other than it, and the portions A and B of the counter electrode being connected to a common voltage through resistors. The portion A of the counter electrode constitutes the receiving electrode, and the portion A of the counter electrode acting as the receiving electrode is connected to a receiving circuit in the display panel through a decoupling capacitor. | 02-04-2010 |
| 20100079345 | PLANAR ARRAY ANTENNA AND COMMUNICATION TERMINAL AND WIRELESS MODULE USING THE SAME - There is a need for preventing a feed line from generating undesirable radiation that may degrade array antenna characteristics. An array antenna is configured as a set of small planar elements of conductor. Density distribution of the small planar elements of conductor occurs at a cycle corresponding to a wavelength of a wireless system using the array antenna. The density distribution is formed along a specified length direction corresponding to a given azimuth angle. | 04-01-2010 |
| 20110140537 | FREQUENCY VARIABLE POWER TRANSMITTER AND RECEIVER IN FRESNEL REGION AND POWER TRANSMITTING SYSTEM - An object is to achieve a radio power transmitting system capable of adaptively controlling power transmission efficiency, and the following means for achieving it is proposed. The power transmitting system includes a receiver having a loaded antenna and a transmitter whose transmitting frequency is variable, and it controls power transmission efficiency by using a modulated electromagnetic wave reflected from the receiver. A capacitive element and an inductive element are formed in the antenna, the transmitting frequency of the transmitter is set to be variable, the electromagnetic wave transmitted from the transmitter and reflected by the receiver is modulated, and the power transmission efficiency between the transmitter and the receiver is controlled by using the modulated reflection wave. | 06-16-2011 |
