Patent application number | Description | Published |
20100245943 | ILLUMINATION DEVICE - An illumination device comprising: an optical guide for receiving light emitted from a light source and guiding the light by repetitive transmission and reflection; a reflective member for reflecting light transmitting in the optical guide to an outside of the optical guide within the optical guide; a supplemental reflective member for reflecting light transmitting the reflective member and light leaked from the optical guide while evading the optical guide to an inside of the optical guide, transmitting the reflective member and light leak. | 09-30-2010 |
20110080622 | LIGHTING DEVICE AND DOCUMENT SCANNING DEVICE HAVING THE SAME - A lighting device includes a light source, a housing, a heat radiator, and a connector. A part of heat generated by the light source is transmitted to the housing, and the housing radiates the part of the heat. Another part of the heat generated by the light source is transmitted to the heat radiator, and the heat radiator radiates the another part of the heat. The connector transmits heat from the housing to the heat radiator when a temperature of a portion of the housing around the connector is higher than a temperature of a portion of the heat radiator around the connector. The connector transmits heat from the heat radiator to the housing when the temperature of the portion of the heat radiator around the connector is higher than the temperature of the portion of the housing around the connector. | 04-07-2011 |
20110085212 | DOCUMENT SCANNING DEVICE - A document scanning device includes a pair of light guides that extend in a main scanning direction of a document and illuminate the document, and a reference plate that is positioned closer to the light guides than the document. Each of the light guides has a first area that illuminates the document and a second area that illuminates the reference plate. Each light guide illuminates the reference plate over a wider area between the light guides in the second area than each light guide illuminates the document in the first area. Therefore, the center of the reference plate is illuminated and a sufficient amount of light is reflected on the reference plate. | 04-14-2011 |
20110267659 | LIGHT GUIDE BODY, AND LIGHTING APPARATUS AND DOCUMENT SCANNING APPARATUS HAVING THE SAME - Top surfaces and inclined surfaces of prisms on a side opposite to a light source are formed such that, in a region on a light source side, light traveling in a light guide body toward the side opposite to the light source is sequentially reflected by the top surfaces and the inclined surfaces of the side opposite to the light surface of the prisms and approaches a direction orthogonal to the longitudinal direction of the light guide body. The height of the prisms can be the lowest in the longitudinally central portion of the light guide body, and gradually increases toward the light source side and the side opposite to the light source, from the central portion. | 11-03-2011 |
20110286699 | LIGHT GUIDE BODY AND LIGHTING APPARATUS HAVING THE SAME - The present invention provides a light guide body that has a light incidence portion through which light enters the light guide body; a light reflecting portion positioned opposite a light emitting surface that extends from the light incidence portion in a longitudinal direction of the light guide body; and a tapered portion having an inner surface that gradually expands from the light incidence portion toward the light reflecting portion. The tapered portion has a light shielding portion to shield, from the light, a part of the light reflecting portion closest to the light incidence portion. | 11-24-2011 |
20130182091 | ENDOSCOPE - An endoscope includes an imaging unit capturing an image of an object; an imaging holder holding the imaging unit; two systems of driving force transmission mechanisms each including a pair of driving rods having distal ends connected in a diagonal position to each other relative to the imaging holder; a driving apparatus disposed on a base end side of the driving rods and driving forward and backward at least one of the driving rods in each of the driving force transmission mechanisms; and a cover member extending from a base member of the driving apparatus and covering at least a portion of the imaging unit, the imaging holder, and the driving force transmission mechanisms. The imaging unit rotates around two different axes according to forward and backward movement of the driving rods. | 07-18-2013 |
Patent application number | Description | Published |
20090154590 | MULTILEVEL QAM DEMODULATOR, MULTILEVEL QAM DEMODULATION METHOD, AND WIRELESS COMMUNICATION SYSTEM - A multilevel QAM demodulator includes a phase difference calculation unit calculating a phase difference signal based on the common phase signal and orthogonal signal after the phase rotation compensation, a phase shift amount calculation unit calculating a phase shift amount indicating a degree of a phase shift based on the common phase signal and orthogonal signal after the phase rotation compensation and phase noise compensation, and a correction unit correcting the phase difference signal based on the phase shift amount. A phase rotation is performed for the phase noise compensation based on the phase difference signal corrected by the correction unit. | 06-18-2009 |
20100067569 | METHOD OF MONITORING CIRCUIT QUALITY AND CIRCUIT THEREFOR - In a digital wireless communication device having an error correction function, the circuit quality is quickly detected with maintained accuracy. The circuit quality to such an extent that a bit error rate (BER) is slightly degraded (10 | 03-18-2010 |
20130065547 | CROSS-POLARIZATION INTERFERENCE COMPENSATION APPARATUS, CROSS-POLARIZATION INTERFERENCE COMPENSATION METHOD, AND PROGRAM - Even when transmitters of both polarizations in an opposing station apparatus output different signals, cross-polarization interference is compensated for. A cross-polarization interference compensation apparatus includes a main signal reception unit which receives a signal having a first polarization direction, an interference signal reception unit which receives a signal having a second polarization direction crossing the first polarization direction, a phase control unit which controls a phase of the signal received by the interference signal reception unit, an interference compensation signal generation unit which generates an interference compensation signal by performing weighted combination on a time series of a signal output by the phase control unit, and setting weighting coefficients used for the weighted combination so that the interference compensation signal becomes a cross-polarization interference component of the signal received by the main signal reception unit, a phase estimation unit which estimates a phase difference between the signal received by the main signal reception unit and the signal received by the interference signal reception unit using information on the weighting coefficients, and a compensation unit which compensates the signal having the first polarization direction for cross-polarization interference caused by the signal having the second polarization direction using the interference compensation signal and the signal received by the main signal reception unit, in which the phase control unit controls the phase of the signal received by the interference signal reception unit using the phase difference estimated by the phase estimation unit so that a phase of the signal received by the main signal reception unit and the phase of the signal received by the interference signal reception unit become identical. | 03-14-2013 |
20130288630 | DIGITAL DEMODULATION CIRCUIT USING AUTOMATIC GAIN CONTROL CIRCUIT HAVING TEMPERATURE COMPENSATION FUNCTION - A digital demodulation circuit amplifies a received signal of an intermediate frequency with a variable gain control amplifier so as to convert it into a baseband signal, which is separated into a common-mode component and an orthogonal component. A first gain control voltage is generated based on the common-mode component and the orthogonal component. Additionally, a temperature correction value is generated by smoothing a pulse-width modulation signal, having a pulse width corresponding to ambient temperature, and by adding a predetermined gain and an offset thereto. A second gain control voltage is generated by adding the temperature correction value to the first gain control voltage. The variable gain control amplifier amplifies a received signal with the second gain control voltage. Thus, it is possible to achieve a temperature compensation function and an automatic gain control function in the digital demodulation circuit with a simple circuit configuration. | 10-31-2013 |