Patents Issued in August 31, 2006
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Publication number: 20060193201Abstract: A mixing implement includes a body having a mixing portion and a connecting portion, the connecting portion having an upper shaft receiving opening formed therein and a side opening that leads to the shaft receiving opening, the shaft receiving opening having a drive pin receiving recess, the side opening and the drive pin receiving recess located substantially diametrically opposite each other with the side opening at a height corresponding to at least part of the drive pin receiving recess. A retainer is movably coupled with the connecting portion through the side opening and biased into an inward position in which an inner portion of the retainer is normally positioned within the shaft receiving opening, the retainer movable to an outward position in which the inner portion of the retainer is at least partially retracted from the shaft receiving opening.Type: ApplicationFiled: February 28, 2005Publication date: August 31, 2006Inventors: Janice Schnipke, Neal Blackburn
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Publication number: 20060193202Abstract: A system and method for predicting passive, high-frequency sonar array performance at any underwater location, implemented as a software package running on a computer. An operator selects an arbitrary geographical location, specifies a sonar array and defines a target. The necessary bathymetry, and associated oceanographic, environmental and meteorological data are automatically acquired or generated, along with appropriate models for ocean surface and bottom reflectivity, and vertical noise directionality. A Comprehensive Acoustic System Simulation (CASS) software module performs appropriate ray tracing, which is used to produce Cross-Spectral Density (CSD) matrices for the target and the anisotropic ambient noise. These are used to generate graphic and numeric representations of the array's performance at the selected location. A time of year may also be specified and the appropriate anisotropic noise field for conditions expected at that location at that time of year will be generated.Type: ApplicationFiled: March 11, 2004Publication date: August 31, 2006Inventors: Juan Arvelo, Patrick Ferat, Leslie Mobley
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Publication number: 20060193203Abstract: A marine seismic streamer has a hydrophone housing positioned in the streamer with the hydrophone housing having ends and rigid side walls, a hydrophone positioned in the hydrophone housing, a soft compliant solid material filling the housing, and openings in the hydrophone housing adapted to substantially permit passage of pressure waves and to substantially attenuate passage of shear waves. Another embodiment is a hydrophone housing having ends, rigid side walls, and openings in the hydrophone housing adapted to substantially permit passage of pressure waves and to substantially attenuate passage of shear waves. The openings are open ends of the housing, in the side walls of the housing, in the end walls of the housing, or in both the side walls and end walls of the housing.Type: ApplicationFiled: February 16, 2005Publication date: August 31, 2006Inventors: Stig Tenghamn, Andre Stenzel
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Publication number: 20060193204Abstract: The present invention provides a method and apparatus for directional de-signature of a seismic signal. The method includes forming a plurality of far-field signatures representative of a plurality of seismic signals having a plurality of take-off angles, associating a plurality of traces representative of a plurality of reflections of the seismic signals with the plurality of far-field signatures, and forming a plurality of de-signatured traces from the plurality of traces and the plurality of associated far-field signatures.Type: ApplicationFiled: January 23, 2004Publication date: August 31, 2006Inventors: Terry Davies, Richard Goto
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Publication number: 20060193205Abstract: The present invention provides a method and apparatus for arriving at true relative amplitude destretched seismic traces from stretched seismic traces. The method compensates for offset varying reflection interference effects due to normal moveout. Stretch factors ? and also input spectra are determined for NMOR stretched seismic traces. Estimates are then made of stretched wavelet spectra from the input spectra. A destretched wavelet spectra is then obtained. Shaping correction factors are determined by taking the ratio of the destretched wavelet spectra to the stretched wavelet spectra and are applied to the input spectra of the stretched traces to arrive at a destretched trace spectra. True relative amplitude scaling factors are computed by taking the ratio of a true relative amplitude property of the destretched wavelet spectra to a corresponding true relative amplitude property of the stretched wavelet spectra.Type: ApplicationFiled: February 12, 2005Publication date: August 31, 2006Inventors: E. Herkenhoff, Richard Alford, Harry Martin
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Publication number: 20060193206Abstract: The invention relates to the field of underwater acoustics and more particularly to the field of signal processing in a low frequency (LF) active sonar system. The present invention makes it possible to decrease the false alarm rate while retaining the classification of the objects. The subject of the invention is a method of processing signals received corresponding to a signal emitted comprising by recurrence two pulses, a first Doppler tolerant broadband pulse of HFM type in particular and a second Doppler intolerant broadband pulse of BPSK type in particular, comprising: a step of detecting objects performed on the part of the signal received corresponding to the first pulses and providing an alarm for each object detected, and a step of classifying the objects detected performed on the part of the signal received corresponding to the second pulses for the alarms satisfying at least one predetermined criterion.Type: ApplicationFiled: March 24, 2004Publication date: August 31, 2006Applicant: ThalesInventors: Pierre Alinat, Georges Bienvenu
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Publication number: 20060193207Abstract: Systems and methods for monitoring and tracking transients caused by geological events are provided. The system comprises a sensor array and a central monitoring system. The central monitoring system is adapted to communicate with the sensor array. The sensor array measures motion at a plurality of locations and transmits time stamped data characterizing the geologic activity at the plurality of locations to the central monitoring system. The central monitoring system is further adapted to correlate the time stamped data and map geological disturbances in real time.Type: ApplicationFiled: February 16, 2005Publication date: August 31, 2006Applicant: HONEYWELL INTERNATIONAL INC.Inventor: Zygmunt Zubkow
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Publication number: 20060193208Abstract: To realize a timepiece with small hand indicating mechanism capable of forming a plurality of kinds of movement layouts having small hands having different revolution numbers by only changing specifications of portions of parts without changing dimensions and shapes of essential parts of a movement. A movement is provided with a first train wheel rotation center for a first type of train wheel for operating a first small hand rotated by a first speed, and a second train wheel rotation center for a second type of train wheel for operating a second small hand rotated by a second speed at a rotation center the same as that of the above-described small hand. A train wheel for rotating a small hand is arranged at one of the first train wheel rotation center and the second train wheel rotation center. Time information or calendar information can be indicated by a small hand rotated by the first type of train wheel or the second type of train wheel.Type: ApplicationFiled: February 23, 2006Publication date: August 31, 2006Inventor: Shigeo Suzuki
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Publication number: 20060193209Abstract: A watch is offered in which there is no danger that the waterproofness is impaired by manipulation of the crown. The watch permits replacements of parts around the crown in a case where the threadedly locking function has deteriorated. The watch is based on a watch in which the crown is threadedly locked to a stem pipe mounted to a barrel. The barrel is provided with a pipe installation hole and with a threaded hole rectangularly in communication with this installation hole. The stem pipe has an insertion portion and a barrel outside protruding portion. The insertion portion is inserted in the pipe installation hole such that the insertion portion can be withdrawn from outside the barrel. The barrel outside protruding portion is disposed outside the barrel and has an external thread to which the crown is removably threaded. An engaging recessed portion is formed in the outer surface of the insertion portion. Annular waterproof packing is sandwiched between the pipe installation hole and the insertion portion.Type: ApplicationFiled: February 23, 2006Publication date: August 31, 2006Inventors: Nobukazu Omori, Haruki Hiranuma
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Publication number: 20060193210Abstract: Watch case, in particular for a wristwatch, with a turning ring provided turnably on one case surface and for this purpose enclosing one case section, the turning ring being secured by at least one holding element engaging in one peripheral groove of the case section and securing the turning ring on the case section.Type: ApplicationFiled: February 22, 2006Publication date: August 31, 2006Inventor: Petra Damasko
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Publication number: 20060193211Abstract: When a disk unloading operation is made by mistake or when recording is suddenly required after the unloading operation in a conventional disk recording/playback apparatus which has no cancel function of the disk unloading operation, an important recording chance is often missed. This invention allows the user to cancel the disk unloading operation, and can quickly restore the state before the disk unloading operation,. thus solving the above problem.Type: ApplicationFiled: April 28, 2006Publication date: August 31, 2006Inventor: Hiroaki Furuyama
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Publication number: 20060193212Abstract: Herein disclosed is an optical disk driving apparatus for selectively driving a plurality of optical disks, comprising: a housing; and an optical disk driving unit accommodated in the housing, the optical disk driving unit including: a turntable for selectively retaining the optical disks; a supporting member for rotatably supporting the turntable; a base plate pivotably retained by the housing; a plurality of vibration isolators for isolating the supporting member from outside vibrations by intervening between the supporting member and the base plate; a supporting member fixing mechanism for fixing the supporting member on the base plate by preventing the vibration isolators from isolating the supporting member from outside vibrations; a base plate driving mechanism for driving the base plate to pivotably move with respect to the housing; and a cam gear for transmitting a rotation torque to each of the supporting member fixing mechanism and the base plate driving mechanism.Type: ApplicationFiled: May 11, 2006Publication date: August 31, 2006Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroto Nishida, Akira Matsumoto
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Publication number: 20060193213Abstract: Herein disclosed is an optical disk driving apparatus for selectively driving a plurality of optical disks, comprising: a housing; and an optical disk driving unit accommodated in the housing, the optical disk driving unit including: a turntable for selectively retaining the optical disks; a supporting member for rotatably supporting the turntable; a base plate pivotably retained by the housing; a plurality of vibration isolators for isolating the supporting member from outside vibrations by intervening between the supporting member and the base plate; a supporting member fixing mechanism for fixing the supporting member on the base plate by preventing the vibration isolators from isolating the supporting member from outside vibrations; a base plate driving mechanism for driving the base plate to pivotably move with respect to the housing; and a cam gear for transmitting a rotation torque to each of the supporting member fixing mechanism and the base plate driving mechanism.Type: ApplicationFiled: May 11, 2006Publication date: August 31, 2006Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroto Nishida, Akira Matsumoto
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Publication number: 20060193214Abstract: In an optical head, if a lens is reduced in size so that it can be integrated with a light source and a photodetector, other optical components as well as the lens must be reduced in size, which would result in greater difficulties in handling for assembly and adjustment purposes. The invention allows large quantities of ultra-small optical heads to be produced accurately and at low cost, the optical heads being easy to adjust and not requiring the handling of minute components for adjustment purposes. A first substrate includes lenses for focusing light on an information storage medium, a second substrate includes detectors and disposed on the surface thereof, and a layer, which is disposed between the first and second substrates, includes prisms and mirrors. The layer also includes cavities in which light sources are disposed. The individual substrates are formed in the form of wafers with the lenses, mirrors, prisms, light sources, and photodetectors disposed thereon.Type: ApplicationFiled: August 26, 2005Publication date: August 31, 2006Inventors: Takeshi Shimano, Masatoshi Kanamaru, Masaya Horino
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Publication number: 20060193215Abstract: An optical head includes a first laser diode configured to generate a laser beam with a wave length of ?1, a second laser diode configured to generate a laser beam with a shorter wave length of ?2 than the wave length ?1, a collimator lens arranged so that the laser beams are incident on it, an aperture filter arranged on an optical axis of the collimator lens, and an object lens 0 arranged on the optical axis so that the laser beams passing through the aperture filter are incident on it, wherein the second laser diode is arranged at a position on the optical axis further away from collimator lens than the first laser diode is away from the collimator lens.Type: ApplicationFiled: December 27, 2005Publication date: August 31, 2006Applicant: Toshiba Samsung Storage Technology CorporationInventor: Yuichi Nakamura
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Publication number: 20060193216Abstract: The present invention is directed to an object lens drive device adapted for moving an object lens in a focus direction of optical axis direction and in a tracking direction perpendicular to the optical axis direction, and includes a fixed position provided in such a manner that a supporting shaft is projected, a movable portion comprised of an object lens, and a bobbin adapted so that the object lens is attached and a hole through the supporting shaft is inserted is formed, the bobbin being supported movably along the supporting shaft and rotatably with the supporting shaft being as center, a drive portion including a magnet portion provided at either one of the fixed potion and the movable portion, and a coil portion provided at the other portion to move the movable portion along the supporting shaft to thereby move the object lens in the focus direction, and to rotate the bobbin with the supporting shaft being as center to thereby move the object lens in the tracking direction, and supporting means includiType: ApplicationFiled: May 2, 2006Publication date: August 31, 2006Applicant: Sony CorporationInventors: Naoto Ikeda, Teruaki Higashihara
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Publication number: 20060193217Abstract: An optical pickup and an optical information recording and reproducing device in which spherical aberration correction control after a disc is loaded can be efficiently made in a short time. Before an information recording medium is loaded into a drive, an optical axis direction position of a concave lens is preset to a state so as to optimize a converging spot on a recording surface of a single-layered medium of as a first recording medium or a predetermined layer (first layer having a substrate thickness of 0.1 mm) of a medium having two or more layers to which the recording/reproduction is executed by a laser light source. After the information recording medium is loaded, if it is determined to be a second (third) recording medium to which the recording/reproduction is executed by a laser light source, setting of the optical axis direction position of the concave lens is changed.Type: ApplicationFiled: December 14, 2005Publication date: August 31, 2006Inventors: Hiromitsu Mori, Kunikazu Ohnishi, Nobuyuki Maeda, Masayuki Inoue
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Publication number: 20060193218Abstract: A method of selecting laser beam in an optical disk drive is disclosed. A first laser beam (such as CD laser beam) is used to read an optical disk and generate a first testing result. Whether the first testing result is normal is then determined. The first laser beam is used to read data from the optical disk if the first testing result is normal, and a second laser beam (such as DVD laser beam) is, in stead, used to read data from the optical disk if the first testing result is abnormal.Type: ApplicationFiled: May 4, 2006Publication date: August 31, 2006Applicant: QUANTA STORAGE INC.Inventor: Chi-Hsiang Kuo
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Publication number: 20060193219Abstract: An optical pickup device is provided which reduces variations in amplitude of a tracking error signal in a seek operation due to an installation error of the optical pickup device onto an optical disk apparatus, thereby generating the tracking error signal with high accuracy without any influence from stray lights, and which is high in productivity and low cost. Two sub-light beams are focused on at least one of forward and backward sides in a rotational direction of the disk with respect to a main light beam focused on the disk. When n is an integer number, and t is a distance between guide grooves of the disk, the two sub-light beams focused are spaced apart from each other by a distance of t×(n+0.5) in the radial direction of the optical disk. As splitting means for splitting the light beams into a plurality of beams, a diffraction grating is used which has grid grooves spaced apart at equal intervals, but having different angles at the upper and lower parts of an exiting surface of the light beam.Type: ApplicationFiled: January 19, 2006Publication date: August 31, 2006Inventors: Tomoto Kawamura, Katsuhiko Izumi, Kunikazu Ohnishi, Kenichi Shimada
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Publication number: 20060193220Abstract: To provide an optical pickup and an optical disc apparatus which obtains stable reproduce signal when reproducing information from a recording medium of a standard handled by selectively using laser beams with different wavelengths, use a diffraction grating having a diffraction pattern defined according to a laser beam with a first wavelength, and when a laser beam with a second wavelength different from a first wavelength passes, obtain an RF signal by adding a non-diffracted light and diffracted light to an output signal.Type: ApplicationFiled: February 28, 2006Publication date: August 31, 2006Inventors: Katsuo Iwata, Kazuhiro Nagata
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Publication number: 20060193221Abstract: To provide an optical head unit and an optical disc apparatus which is configured to detect exactly the largeness of a focusing error when recording or reproducing information on/from an HD DVD specification optical disc, place a diffraction element having a diffraction pattern capable of providing an optical spot which mainly includes a radial direction component of a reflected laser beam reflected by an optical disc and difficult to generate a focusing error fluctuation, on the light-receiving surface of a photodetector which receives a reflected laser beam reflected on the recording layer of an optical disc, and outputs a corresponding signal.Type: ApplicationFiled: February 28, 2006Publication date: August 31, 2006Inventors: Sumitaka Maruyama, Kazuo Watabe
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Publication number: 20060193222Abstract: Provided is an information recording/reproduction apparatus capable of achieving a reduction in power consumption without impairing quality of recorded information. The information recording/reproduction apparatus according to the present invention includes a recording/reproduction circuit for recording information stored in a memory onto a disk or reproducing the information from the disk through an intermittent operation, and a switching circuit for switching a proportion of an execution time of the recording or reproduction in a cycle of recording or reproducing the same data amount in the intermittent operation, wherein the switching circuit performs the switching based on pickup image information obtained from an image pickup element, and the switching circuit performs the switching based on a focus signal obtained from the pickup image information.Type: ApplicationFiled: February 9, 2006Publication date: August 31, 2006Applicant: CANON KABUSHIKI KAISHAInventor: SHINNOSUKE TORII
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Publication number: 20060193223Abstract: Embodiments of methods and apparatus for compensating writing power in an optical disc device can compensate selected (e.g., OPC) writing power. When a writing operation is temporarily suspended (e.g., buffer under-run) during the writing operation, writing power is compensated in real time on the basis of the ? value detected from read RF signals for most recently recorded data and comparisons to selected writing power (e.g., optimum ? value stored therein through OPC).Type: ApplicationFiled: January 20, 2006Publication date: August 31, 2006Inventors: Man Jung, Seung Yoo
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Publication number: 20060193224Abstract: An optical disk differentiating method applied to an optical disk drive, in which a first level value, a second level value and an optical disk differentiating value generating program are stored and an optical disk is put.Type: ApplicationFiled: February 22, 2006Publication date: August 31, 2006Inventor: Ting Lin
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Publication number: 20060193225Abstract: An optical disc recording/reproducing apparatus according to the present invention has a CPU which holds the largeness of a driving current supplied from a LD driving circuit to a laser diode in a sample hold circuit of an APC circuit, interrupts a driving signal supplied from the LD driving circuit to the laser diode, and outputs the driving current of the largeness. held in the sample hold part from the LD driving circuit to the laser diode at the end of offset correction by an offset correction mechanism, when an offset is detected by offset detectors, and an offset is corrected by offset correction mechanisms, thereby improving the tracking performance of the servo system and enabling stable control without a malfunction.Type: ApplicationFiled: December 27, 2005Publication date: August 31, 2006Inventors: Yoshitaka Kon, Takahiro Magome
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Publication number: 20060193226Abstract: An optical disk recording and playback device comprises a first laser driving circuit that supplies a driving signal to a first laser diode, a second laser driving circuit that supplies a driving signal to a second laser diode, a signal recording pulse generating circuit that generates a signal recording pulse signal in accordance with a signal to be recorded on a signal recording layer, and outputs the signal recording pulse signal to the first laser driving circuit, and an image recording pulse generating circuit that generates an image recording pulse signal in accordance with a signal to form an image on an image recording layer, and outputs the image recording pulse signal to the second laser driving circuit. When recording of a signal to the signal recording layer and recording of an image to the image recording layer are simultaneously performed, the first laser diode and the second laser diode are controlled to prevent light emission from simultaneously occurring at recording levels.Type: ApplicationFiled: February 23, 2006Publication date: August 31, 2006Applicant: Sanyo Electric Co., Ltd.Inventors: Akira Tsukihashi, Tsuyoshi Yamamoto
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Publication number: 20060193227Abstract: An optical recording medium allowing data to be recorded on, erased from, and reproduced from, and storing information about power levels of an erase pulse. The recorded erase pattern information may include information about power levels of first and last pulses of an erase pattern for erasing data. The first and last pulses of the erase pattern can be differently set depending on the differing kind of recording layer or layers of a disk or differing kinds of disks and recorded in a reproducible only area or rewritable area of the optical recording medium. Thus, by presetting the appropriate erase power levels, the time required for selecting an optimal erase power for the optical recording medium can be considerably reduced.Type: ApplicationFiled: May 1, 2006Publication date: August 31, 2006Applicant: Samsung Electronics Co., Ltd.Inventors: Kyung-geun Lee, Yong-Jin Ahn, In-sik Park, Seong-sue Kim, Du-seop Yoon
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Publication number: 20060193228Abstract: A system and method for generating an optical return-to-zero signal with frequency chirp. The system includes a bit separator configured to receive an electrical non-return-to-zero signal and generate a first input signal and a second input signal. Additionally, the system includes a first driver configured to receive the first input signal and generate a first driving signal. The first driving signal is proportional to the first input signal in signal strength. Moreover, the system includes a second driver configured to receive the second input signal and generate a second driving signal. The second driving signal is proportional to the second input signal in signal strength. Also, the system includes a light source configured to generate a light, and an electro-optical modulator.Type: ApplicationFiled: January 20, 2006Publication date: August 31, 2006Applicant: FutureWei Technologies, Inc.Inventor: Yu Bai
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Publication number: 20060193229Abstract: A system and method for generating an optical return-to-zero signal. The system includes a bit separator configured to receive an electrical non-return-to-zero signal and generate a first signal and a second signal, and a driver configured to receive the first signal and the second signal and generate a driving signal. The driving signal is associated with a difference between the first signal and the second signal. Additionally, the system includes a light source configured to generate a light, and an electro-optical modulator configured to receive the light and the driving signal, modulate the light with the driving signal, and generate an optical signal. The electrical non-return-to-zero signal includes a first plurality of bits and a second plurality of bits. The first signal includes the first plurality of bits, and the second signal includes the second plurality of bits. The optical signal is an optical return-to-zero signal.Type: ApplicationFiled: January 20, 2006Publication date: August 31, 2006Applicant: FutureWei Technologies, Inc.Inventor: Yu Bai
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Publication number: 20060193230Abstract: A system and method for generating an optical return-to-zero signal. The system includes an electro-optical conversion system. The electro-optical conversion system is configured to receive an input electrical non-return-to-zero signal, process information associated with the input electrical non-return-to-zero signal, and generate a first electrical signal and a second electrical signal based on at least information associated with the input electrical non-return-to-zero signal. Additionally, the electro-optical conversion system is configured to delay a second electrical signal with respect to the first electrical signal by a predetermined period of time, process information associated with the first electrical signal and the delayed second electrical signal, and generate an output optical return-to-zero signal based on at least information associated with the first electrical signal and the delayed second electrical signal.Type: ApplicationFiled: January 31, 2006Publication date: August 31, 2006Applicant: FutureWei Technologies, Inc.Inventor: Yu Bai
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Publication number: 20060193231Abstract: When a wavelength of a first laser beam with which a first recording medium including a first recording layer is recorded and reproduced is indicated as ?1 (nm), a wavelength of a second laser beam with which a second recording medium including a second recording layer is recorded and reproduced as ?2 (nm), the relationship between the wavelength ?1 and the wavelength ?2 is set to be expressed by 10?|?1??2|?120. The first recording layer has a light absorptance ratio of at least 1.0 with respect to the wavelength ?1. The light transmittance of the first recording medium with respect to the wavelength ?2 is set to be at least 30 in both the cases where the recording layer is in a crystal state and in an amorphous state. In order to record and reproduce the optical multilayer disk with the above-mentioned characteristics, a multiwavelength light source with the following configuration is used.Type: ApplicationFiled: April 24, 2006Publication date: August 31, 2006Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Kiminori Mizuuchi, Kazuhisa Yamamoto, Rie Kojima, Noboru Yamada
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Publication number: 20060193232Abstract: A holographic data storage system is disclosed. The data storage system includes a holographic data storage media adapted to receive a data beam and a reference beam and store a data pattern associated with the data beam. The stored data pattern is expressed by a holographic representation corresponding to data elements of the data beam.Type: ApplicationFiled: October 14, 2005Publication date: August 31, 2006Inventors: Steve Redfield, Kismine Starr, Tim Harvey, Don Schmadel
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Publication number: 20060193233Abstract: A light control apparatus including a plurality of two-dimensionally arranged pixels, each of the plurality of pixels comprising a first storage element which stores a luminance value of a present frame for the pixel; a second storage element which stores a preliminary luminance value for the pixel; and a switching element which changes the luminance value for the pixel by transferring the luminance value stored in the second storage element to the first storage element.Type: ApplicationFiled: March 9, 2006Publication date: August 31, 2006Inventors: Yoshikazu Fujimori, Ken Nakahara, Takashi Nakamura
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Publication number: 20060193234Abstract: An exemplary optical pick-up apparatus of the invention includes: a first light source configured to emit a light beam of a first wavelength; a second light source configured to emit a light beam of a second wavelength, the second wavelength longer than the first wavelength; a third light source configured to emit a light beam of a third wavelength, the third wavelength longer than the second wavelength, wherein the first, second, and third light sources emit light beams one at a time during a reading or writing operation; a first dichroic element configured to transmit the light beam of the first wavelength and to reflect the light beam of the second wavelength; a second dichroic element configured to reflect the light beams of the first and second wavelengths and to transmit the light beam of the third wavelength; and an objective lens configured to transmit light beams of the first and second wavelengths, that have interacted with the first and second dichroic elements, to transmit the third wavelength, thType: ApplicationFiled: December 27, 2005Publication date: August 31, 2006Applicant: Toshiba Samsung Storage Technology CorporationInventor: Chikara Tanioka
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Publication number: 20060193235Abstract: A diffraction element and an optical head having a diffraction efficiency not changing depending on wavelength of light, wherein the diffraction efficiency setting in configurable in relation to wavelength, are provided. In a diffraction element 10 diffracting light, an optically anisotropic medium 11 having birefringency and an optically isotropic medium 12 are periodically and alternately arranged, and in the optically anisotropic medium 11, a principal axis direction of refractive index ellipse in a plane perpendicular to the optical axis on which incident light is transmitted or in a plane close to the plane, is spirally rotated around an axis in parallel with the optical axis. In particular, the optically anisotropic medium 11 having birefringency can be constituted by a polymer liquid crystal formed by polymerizing a liquid crystal.Type: ApplicationFiled: April 26, 2006Publication date: August 31, 2006Applicant: ASAHI GLASS COMPANY LIMITEDInventors: Koichi Murata, Naomitsu Umemura
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Publication number: 20060193236Abstract: To provide an optical head unit and an optical disc apparatus which is difficult to be influenced by interlayer crosstalk of recording layers and decreases a load of a signal reproduce system when reproducing and recording information from an optical disc having two or more recording layers, provide a diffraction optical element for forming an image on the light-receiving surface of a photodetector which receives a reflected laser beam reflected on first and second recording layers of an optical disc and outputs a corresponding signal, in a state that a component close to the center of a reflected laser beam reflected by an optical disc is polarized (diffracted).Type: ApplicationFiled: February 28, 2006Publication date: August 31, 2006Inventors: Kazuo Watabe, Sumitaka Maruyama
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Publication number: 20060193237Abstract: A system and method of drawing a visible image on an optical disk are provided. The optical disk is rotated while a optical pickup irradiates a laser beam onto the optical disk to draw the visible image on the optical disk. The rotating state of the optical disk is detected. The optical pickup is fed in a radial direction of the optical disk. An irradiating position of the laser beam is controlled relative to the optical disk by fixing the laser beam in the radial direction of the optical disk during one rotation of the optical disk, and shifting the irradiating position of the laser beam by a first distance in the radial direction each time one rotation of the optical disk is detected. The optical pickup is fed in the radial direction by a second distance the optical disk has rotated a predetermined number of rotations.Type: ApplicationFiled: April 14, 2006Publication date: August 31, 2006Applicant: Yamaha CorporationInventors: Morito Morishima, Akira Usui, Yoshihiko Shiozaki
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Publication number: 20060193238Abstract: A disk unit is disclosed wherein a disk inserted by a pivoting arm is loaded to the interior of the disk unit or a disk accommodated in the interior of the disk unit is unloaded to the exterior of the disk unit, the disk unit including a plurality of arms able to convey two types of disks different in diameter while supporting an outer periphery edge of each of the disks.Type: ApplicationFiled: February 2, 2006Publication date: August 31, 2006Inventors: Shinichi Fujisawa, Satoru Inoue
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Publication number: 20060193239Abstract: A disk unit wherein a disk inserted by a plurality of arms, the arms being able to convey the disk while supporting an outer periphery edge of the disk, is loaded to the interior of the disk unit or the disk accommodated in the interior of the disk unit is unloaded to the exterior of the disk unit, wherein a turntable for rotating the disk in a fixed state of the disk thereto is provided on a vertically movable lift frame and when the disk is inserted from a disk inlet in an initial descended state of the lift frame, a rear end portion of the disk is lifted and conducted to a holder of a disk supporting arm.Type: ApplicationFiled: February 16, 2006Publication date: August 31, 2006Inventor: Satoru Inoue
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Publication number: 20060193240Abstract: Herein disclosed is an optical disk driving apparatus for selectively driving a plurality of optical disks, comprising: a housing; and an optical disk driving unit accommodated in the housing, the optical disk driving unit including: a turntable for selectively retaining the optical disks; a supporting member for rotatably supporting the turntable; a base plate pivotably retained by the housing; a plurality of vibration isolators for isolating the supporting member from outside vibrations by intervening between the supporting member and the base plate; a supporting member fixing mechanism for fixing the supporting member on the base plate by preventing the vibration isolators from isolating the supporting member from outside vibrations; a base plate driving mechanism for driving the base plate to pivotably move with respect to the housing; and a cam gear for transmitting a rotation torque to each of the supporting member fixing mechanism and the base plate driving mechanism.Type: ApplicationFiled: May 11, 2006Publication date: August 31, 2006Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroto Nishida, Akira Matsumoto
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Publication number: 20060193241Abstract: Herein disclosed is an optical disk driving apparatus for selectively driving a plurality of optical disks, comprising: a housing; and an optical disk driving unit accommodated in the housing, the optical disk driving unit including: a turntable for selectively retaining the optical disks; a supporting member for rotatably supporting the turntable; a base plate pivotably retained by the housing; a plurality of vibration isolators for isolating the supporting member from outside vibrations by intervening between the supporting member and the base plate; a supporting member fixing mechanism for fixing the supporting member on the base plate by preventing the vibration isolators from isolating the supporting member from outside vibrations; a base plate driving mechanism for driving the base plate to pivotably move with respect to the housing; and a cam gear for transmitting a rotation torque to each of the supporting member fixing mechanism and the base plate driving mechanism.Type: ApplicationFiled: May 11, 2006Publication date: August 31, 2006Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroto Nishida, Akira Matsumoto
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Publication number: 20060193242Abstract: Herein disclosed is an optical disk driving apparatus for selectively driving a plurality of optical disks, comprising: a housing; and an optical disk driving unit accommodated in the housing, the optical disk driving unit including: a turntable for selectively retaining the optical disks; a supporting member for rotatably supporting the turntable; a base plate pivotably retained by the housing; a plurality of vibration isolators for isolating the supporting member from outside vibrations by intervening between the supporting member and the base plate; a supporting member fixing mechanism for fixing the supporting member on the base plate by preventing the vibration isolators from isolating the supporting member from outside vibrations; a base plate driving mechanism for driving the base plate to pivotably move with respect to the housing; and a cam gear for transmitting a rotation torque to each of the supporting member fixing mechanism and the base plate driving mechanism.Type: ApplicationFiled: May 12, 2006Publication date: August 31, 2006Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroto Nishida, Akira Matsumoto
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Publication number: 20060193243Abstract: According to one embodiment an optical disk processing method according to this invention detects the reflected light from an optical disk having a first and a second recording layer in each of which first and second tracks are formed alternately from the inner edge toward the outer edge, determines a method of detecting the pits in the first and second recording layers on the basis of pit polarity information indicating the polarity of the pits included in the information reflected in the detected reflected light and of recording-layer identifying information to identify the first and second recording layers, and reproduces addresses from the pits in the first and second recording layers by the determined detecting method.Type: ApplicationFiled: February 27, 2006Publication date: August 31, 2006Inventor: Tadashi Kobayashi
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Publication number: 20060193244Abstract: The transmission system is backward compatible with a former transmission system (DVB-T), enabling a receiver of the former system to receive signals transmitted by a transmitter of the new transmission system. A new modulation is used to transmit additional information bits corresponding to a new service. The new modulation is specified by a combination of the former modulation with a new-built over modulation.Type: ApplicationFiled: August 11, 2004Publication date: August 31, 2006Inventor: David Le Goff
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Publication number: 20060193245Abstract: A diversity transmitter for use in an OFDM transmission protocol which diversity transmitter comprises: a diversity generator (2) for receiving and diversifying OFDM transmit symbols, and outputting diversified OFDM symbol matrices (DOSM), DOSM symbols within each DOSM being divided into at least two primary streams each comprising different DOSM symbols, a transmit processor for receiving said at least two primary streams of DOSM symbols, and for transforming said each DOSM symbol from the frequency domain into the time domain, and outputting time domain OFDM symbols (TDOSs), a cyclic delay circuit (41 . . . 4P) for dividing at least one of said primary streams of TDOSs into at least two branches of identical TDOSs, each branch for supplying a respective spatial channel for transmission to a receiver, the arrangement being such that, in use, said cyclic delay circuit (41 . . . 4P) applies a cyclic time shift to a TDOS symbol in at least one of said branches before transmission.Type: ApplicationFiled: February 27, 2006Publication date: August 31, 2006Applicant: King's College LondonInventors: Abdol Aghvami, Mischa Dohler, Fatin Said, Afzal Lodhi, Francesco Ostuni
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Publication number: 20060193246Abstract: The architecture according to the invention is a high service availability Ethernet/IP network architecture, that allows data flows to be conveyed without interruption to service, these flows coexisting with other flows that tolerate interruption to service, and the architecture is characterized in that the network consists of two fault tolerant network architectures that are superposed, one of which is implemented in the form of a single network having a mesh infrastructure and the other in the form of an infrastructure consisting of two independent networks.Type: ApplicationFiled: February 16, 2004Publication date: August 31, 2006Applicant: ThalesInventors: Valerie Brute De Remur, Patrick Dillon
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Publication number: 20060193247Abstract: The present invention provides an active/standby data center that avoids the delay associated with a cached DNS entry to switch from the active data center to the standby data center. When the active data center becomes unavailable, the standby data center advertises the same address as the primary data center so the change over occurs quickly. When the IP address of the primary data center is no longer visible to the standby data center, the standby data center begins to advertise.Type: ApplicationFiled: February 25, 2005Publication date: August 31, 2006Applicant: Cisco Technology, Inc.Inventors: Zeeshan Naseh, Vinay Gundi
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Publication number: 20060193248Abstract: A local fast reroute (FRR) technique is implemented at the edge of a computer network. In accordance with the technique, if an edge device detects a node or link failure that prevents it from communicating with a neighboring routing domain, the edge device reroutes at least some data packets addressed to that domain to a backup edge device which, in turn, forwards the packets to the neighboring domain. The rerouted packets are designated as being “protected” (i.e., rerouted) data packets before they are forwarded to the backup edge device. The backup edge device identifies protected data packets as those which contain a predetermined “service” label in their MPLS label stacks. In other words, the service label is used as an identifier for packets that have been FRR rerouted. Upon receiving a data packet containing a service label, the backup edge device is not permitted to reroute the packet a second time, e.g.Type: ApplicationFiled: February 28, 2005Publication date: August 31, 2006Inventors: Clarence Filsfils, David Ward, Stefano Previdi, Jean-Philippe Vasseur, Jim Guichard, Robert Raszuk
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Publication number: 20060193249Abstract: Methods, apparatuses, and systems are presented for conducting a point-to-point (PPP) session relating to establishing a PPP session involving at least a local node and a remote node, wherein the local node comprises a data plane for handling transfer of data for the PPP session at the local node, and wherein the local node comprises a first control plane for controlling operations of the data plane, replicating at least one portion of information accessed by the first control plane, such that the at least one portion of information may be accessed by a second control plane, and switching from the first control plane to the second control plane, such that the second control plane controls operations of the data plane, wherein the second control plane accesses the at least one portion of information replicated from the first control plane, wherein the data plane is capable of continuing to handle transfer of data for the PPP session during switching from the first control plane to the second control plane.Type: ApplicationFiled: March 29, 2005Publication date: August 31, 2006Applicant: Network Equipment Technologies, Inc.Inventors: Kim Vu, Raj Sarkar, Saeed Nekoomaram, Prakash Jayaraman
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Publication number: 20060193250Abstract: Methods, systems, and computer program products for thermal management of a processor associated with a network interface are disclosed. According to one method, message traffic is sent and received using a first processor associated with a first network interface. A temperature associated with the first processor is determined. Message traffic is switched from the first processor to a second processor in response to the temperature associated with the first processor having a predetermined relationship with respect to a threshold value. The threshold value can be less than a thermal shutdown level of the first processor.Type: ApplicationFiled: February 28, 2005Publication date: August 31, 2006Inventors: Chris Desjardins, John Hildebrand, Komal Khungar, Robert Kress