Patent application number | Description | Published |
20080231923 | Holographic recording apparatus - The present invention relates to a holographic recording apparatus that records on a multiple basis information on a holographic memory. An object of the present invention is to provide a holographic recording apparatus capable of avoiding problems of recording error of data and destruction of the existing data, which will occur when the medium of the specification shortages is used. | 09-25-2008 |
20090135703 | HOLOGRAPHIC RECORDING MEDIUM - This invention is a holographic recording medium including a track in which position information to specify a recording position and a reproducing position of page data is formed. The position information of the track is formed of position detection patterns. The position detection patterns each including a first detection mark row including center pits arranged at predetermined intervals; and a second detection mark row including side marks arranged at the same intervals as the intervals of the center pits, the side marks having lengths substantially corresponding to integral multiples of the intervals of the center pits. The second detection mark row is arranged adjacent to the first detection mark row such that both ends of the side marks are arranged so as to correspond to the center pits in a track width direction, and page data is recorded and reproduced on the basis of positions of the center pits or positions of the ends of the side marks. | 05-28-2009 |
20090262404 | Holographic Recording Medium - In a hologram recording medium, a bleaching beam irradiated to fix recorded information is prevented from spreading and advancing into an unrecorded area. The hologram recording medium is provided with a hologram material layer for recording information to be recorded by irradiating a same area with an information beam which corresponds to the information to be recorded and a reference beam for reading out the recorded information. The hologram material layer is divided into a plurality of recording zones by a plurality of light blocking walls, and the light blocking walls are formed in the recording zone to which recording process has been performed, by using a material not passing through the bleaching beam irradiated for fixing the recorded information. | 10-22-2009 |
20100020324 | MICRO-DISTANCE MEASURING METHOD AND DEVICE - A micro-distance measuring method includes: collecting measurement light projected from a light projection part by lens, inversely correcting astigmatism of the measurement light by a correction optical part, making the measurement light incident on a translucent substrate at an oblique angle so that the astigmatism of the measurement light inversely corrected by the correction optical part is canceled, projecting the measurement light, passing through the translucent substrate, on an object adjacent to the translucent substrate, and receiving light reflected on the object, detecting a phase difference between polarized components of the received light, which are different in the vibration direction, and determining a distance between the substrate and the object on the basis of the detected phased difference. | 01-28-2010 |
20100244580 | WIRELESS POWER SUPPLY APPARATUS - A wireless power supply includes: a power transmitting coil resonant at a first resonant frequency that generates a magnetic field resonance, a power receiving coil resonant at the first resonant frequency, a power receiving unit that outputs energy received by the power receiving resonant coil; a distance detector that detects a distance between the power transmitting resonant coil and the power receiving resonant coil; a power transmitting frequency controller that changes the first resonant frequency to a second resonant frequency on the basis of the distance detected by the distance detector; and a power receiving frequency controller that changes the first resonant frequency of the power receiving resonant coil from the first resonant frequency to a second resonant frequency on the basis of the distance detected by the distance detector. | 09-30-2010 |
20100244581 | WIRELESS ELECTRIC POWER SUPPLY METHOD AND WIRELESS ELECTRIC POWER SUPPLY APPARATUS - A wireless electric power supply method includes: supplying electric power from a power supply section to a power-transmission resonance coil at a resonance frequency which causes magnetic field resonance; transmitting the electric power, supplied from the power supply section, as magnetic field energy from the power-transmission resonance coil to a power-reception resonance coil by using the magnetic field resonance, the power-transmission resonance coil being capable of being in magnetic field resonance with the power-reception resonance coil at the resonance frequency; monitoring the electric power supply by using a monitor section; comparing, by using a comparison section, the monitoring result obtained by the monitor section with characteristics data indicating the characteristics of the electric power supply performed by the power supply section; and controlling, by using a control section, the electric power supply performed by the power supply section, on the basis of the comparison result obtained by the comparison section. | 09-30-2010 |
20120001485 | WIRELESS POWER SUPPLY SYSTEM, WIRELESS POWER TRANSMITTING DEVICE, AND WIRELESS POWER RECEIVING DEVICE - A wireless power supply system includes: a wireless power transmitting device configured to include a variable resonant circuit having a variable-controllable resonant frequency characteristic, and to transmit electric power wirelessly via the variable resonant circuit; a power transmission control unit configured to variably control the resonant frequency characteristic of the variable resonant circuit; and a plurality of wireless power receiving devices configured to include respective unique resonant circuits having respective unique resonant frequency characteristics which are different to each other, and to wirelessly receive power from the wireless power transmitting device by a magnetic field resonance mode arising as a result of the unique resonant circuit tuning to a resonant frequency of the variable resonant circuit. | 01-05-2012 |
20120119914 | POWER TRANSMISSION DEVICE, WIRELESS POWER SUPPLY SYSTEM, AND WIRELESS POWER SUPPLY DEVICE - A power transmission device includes a power supply unit configured to supply power by a resonance frequency for magnetic resonance; a power transmission resonance coil capable of magnetic resonance with a power reception resonance coil in the resonance frequency, the power transmission resonance coil being configured to supply the power from the power supply unit as magnetic field energy caused by the magnetic resonance; a temperature detector provided in the power transmission resonance coil; and a control unit configured to refer to a table stored in a memory expressing an allowable temperature range, determine whether a detected temperature detected by the temperature detector at an elapsed time is within the allowable temperature range at the elapsed time, and stop an operation of the power supply unit when the detected temperature is not within the allowable temperature range. | 05-17-2012 |
20120194000 | POWER TRANSMITTING DEVICE AND POWER TRANSMITTING APPARATUS - A power transmitting device includes a power transmitting coil having a resonance point different from that of a power receiving resonant coil, which transmits power supplied from a power supply unit as magnetic field energy to the power receiving resonant coil which resonates at a resonant frequency causing magnetic field resonance. A power receiving device includes the power receiving resonant coil which receives the magnetic field energy transmitted from the power transmitting coil at the resonant frequency. | 08-02-2012 |
20120212069 | WIRELESS POWER TRANSMITTING DEVICE AND WIRELESS POWER TRANSMISSION SYSTEM - A wireless power transmitting device includes a housing configured to have a feeding surface on which a power receiving device is to be placed; a power transmitting coil disposed inside the housing and configured to have a central axis that intersects with the feeding surface; and an alternating-current power supply configured to supply power to the power transmitting coil, wherein the feeding surface has raised and recessed portions in an area corresponding to a region inside an outer region of the power transmitting coil. | 08-23-2012 |
20120212074 | MAGNETIC RESONANCE POWER TRANSMITTER AND MAGNETIC RESONANCE POWER RECEIVER - A magnetic resonance power transmitter of a magnetic resonance wireless power transmission system includes a resonance coil, an alternating current power source configured to cause the resonance coil to generate an alternating current, and a frequency changer configured to change, based on communication data, a frequency of the alternating current that the alternating current power source causes the resonance coil to generate. | 08-23-2012 |
20130015720 | RESONANT FREQUENCY CONTROL METHOD, ELECTRIC POWER TRANSMITTING DEVICE, ELECTRIC POWER RECEIVING DEVICE IN MAGNETIC RESONANT TYPE POWER TRANSMISSION SYSTEM - In a resonant frequency control method in a magnetic field resonant coupling type power transmission system transmitting an electric power from a power transmitting coil to a power receiving coil using magnetic field resonance, a high-speed, accurate and real-time adjustment of the resonant frequency of a coil is realized. The phase of a voltage supplied to a power transmitting coil and the phase of a current that flows in the power transmitting coil or a power receiving coil is detected and the resonant frequency of the power transmitting coil or the power receiving coil is varied such that the phase difference between them becomes a target value. | 01-17-2013 |