Patents Issued in February 28, 2008
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Publication number: 20080049542Abstract: An address counter for a nonvolatile memory device includes a cascade of cells. Each cell includes an address counting flip-flop that is updated to a value of every newly counted address bit, or latches a column address bit value input by an external user of the memory device during ALE cycles for addressing a start memory location on a selected page. Each cell further includes an additional address loading flip-flop for loading the column address bit value input during ALE cycles for addressing the start memory location on the selected page during the ALE cycles. A logic circuit updates the address counting flip flop to the address bit value during a read confirm cycle in a read sequence, and during a first data input cycle in a program sequence.Type: ApplicationFiled: July 27, 2007Publication date: February 28, 2008Applicants: STMicroelectronics S.r.l., STMicroelectronics Asia Pacific Pte Ltd, Hynix Semiconductor Inc.Inventors: Hyungsang Lee, Dae Sik Song, Jacopo Mulatti
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Publication number: 20080049543Abstract: A segmented auger mechanism is mounted in the hopper of a concrete dispensing apparatus used to distribute a hydrated concrete mixture into a horizontally disposed form to manufacture pre-cast concrete structures, such as concrete wall panels used to form a foundation for a residential or commercial building. The auger mechanism is formed of connected segments that can be individually and independently removed from the concrete structure for service and repair. The auger is rotatably supported by a pair of end bearings supported on the opposing end walls of the hopper of the dispensing apparatus, and by at least one interior bearing rotatably supporting a jack shaft having opposing half-round connecting portions for attachment to a corresponding connecting portion on the auger shaft. Removal of a segment of the auger mechanism facilitates the removal of the entire auger mechanism to minimize the down time of the concrete dispensing apparatus.Type: ApplicationFiled: August 22, 2006Publication date: February 28, 2008Inventors: Melvin M. Zimmerman, Carl S. Martin, Matthew S. Hildebrand
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Publication number: 20080049544Abstract: A method for mixing a drilling fluid formulation that includes establishing a flow path for a base fluid, adding drilling fluid additives to the base fluid to create a mixture, aerating the mixture of base fluid and drilling fluid additives, and injecting a compressible driving fluid into the mixture of base fluid and drilling fluid additives to form a mixed drilling fluid is disclosed.Type: ApplicationFiled: August 21, 2007Publication date: February 28, 2008Applicant: M-I LLCInventors: Richard Bingham, Diana Garcia
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Publication number: 20080049545Abstract: Apparatus and methods are disclosed for uniformly mixing fluid phases entrained in a porous material.Type: ApplicationFiled: August 22, 2006Publication date: February 28, 2008Inventor: Igor I. Fedchenia
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Publication number: 20080049546Abstract: A material transfer device, in particular for use with blenders associated with a material processing device such as a plastics extruding device. The material transfer device can be used for controlling delivery of measured amounts of particulate material to or from a weigh hopper, or for mixing materials in a mixing chamber of the blender. The material transfer device includes a pipe defining a material delivery path. The pipe has a material inlet and a material outlet. An air inlet manifold encircling the pipe is connected by an air supply line to a pressurised air supply. Air outlets of the manifold direct an air stream towards the outlet of the pipe to draw material through the pipe from a hopper of particulate material, the pipe inlet being located within the hopper. An air inlet valve in the air supply line is connected to a controller which is operable to open and shut the valve for pulsing the gas stream to control the amount of material delivered through the pipe.Type: ApplicationFiled: July 18, 2007Publication date: February 28, 2008Inventor: James O'Callaghan
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Publication number: 20080049547Abstract: A water agitation system for use with a water retention structure, such as a bird bath or livestock water trough, includes a motor operatively connected to a drive shaft, and a blade assembly extending outwardly from the drive shaft. The motor is operable to rotate the blade assembly in order to impart motion to water retained within the water retention structure.Type: ApplicationFiled: September 13, 2007Publication date: February 28, 2008Inventors: Thomas Reusche, Donald Owen, Joe Blahnik
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Publication number: 20080049548Abstract: A mixing device and method for mixing at least one first ingredient and at least one second ingredient. The device includes a body which has a wall defining a cavity. A first inlet communicates with the cavity for introducing the first ingredient and a second inlet communicates with the cavity for introducing the second ingredient. An outlet is provided in communication with the cavity receiving the mixed first and second ingredient which have been mixed in the cavity. The ingredients are mixed by introducing one ingredient as a stream and the second ingredient as a forcefully introduced stream. An area upstream of the ingredients is provided for mixing ingredients. Once mixed the ingredients must flow through the body before reaching the outlet. The device can be in the form of a kit for retrofitting on existing devices such as beverage dispensers.Type: ApplicationFiled: June 23, 2005Publication date: February 28, 2008Applicant: BUNN-O-MATIC CORPORATIONInventors: Jeffery Kadyk, Suresh Radhakrishnan
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Publication number: 20080049549Abstract: Apparatus and method for mixing a fluid dispersion disposed in a container having either a cylindrical or a square shape. The apparatus includes a holding structure having a retaining structure connected to a base. The retaining structure prevents lateral movement of the container both when the container has a cylindrical shape and when the container has a generally square shape with a width substantially equal to the diameter of the cylindrical shape. The apparatus rotates the container about at least one axis.Type: ApplicationFiled: October 30, 2007Publication date: February 28, 2008Applicant: THE SHERWIN-WILLIAMS COMPANYInventors: Dwight Huckby, James MacDonald, John O'Brien
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Publication number: 20080049550Abstract: A method, apparatus and system for acquiring land seismic data includes acquiring seismic data with a first autonomous seismic data acquisition unit and a second autonomous seismic data acquisition unit wherein each acquisition unit comprises a plurality of digitally controlled temperature-compensated crystal oscillators. Oscillator-based timing signals are acquired that are associated with the plurality of digitally controlled temperature-compensated crystal oscillators and a time correction is determined to apply to the seismic data acquired with the first autonomous seismic data acquisition unit. The time correction is determined using the oscillator-based timing signals from the first and second autonomous seismic data acquisition units.Type: ApplicationFiled: August 22, 2006Publication date: February 28, 2008Applicant: Global Geophysical Services, IncorporatedInventors: Thomas J. Fleure, Larry Walker
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Publication number: 20080049551Abstract: A method includes conditioning a set of multicomponent seismic data and sensor orientation data, the multicomponent seismic data including pressure data and particle motion data, acquired in a towed array, marine seismic survey; digital group forming the conditioned pressure data, a vertical particle motion component of the conditioned particle motion data, and the conditioned sensor orientation data; and summing the digitally group formed pressure data and the digitally group formed vertical particle motion component.Type: ApplicationFiled: December 19, 2006Publication date: February 28, 2008Inventors: Everhard Johan Muyzert, Johan Olof Anders Robertsson
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Publication number: 20080049552Abstract: Method of processing seismic data representative of at least one wavefield, characterized in that local harmonic components of the wavefield are determined at a given point P of the subsurface by implementing a recurrent processing according to which a harmonic of rank n+1, n being a positive integer, is determined as a function of one or more harmonics of rank n or lower to which is applied at least one filtering which depends on at least one local parameter at the point P, this local parameter being chosen from among the components of the wavevector, the frequency of the wavefield, the local velocity, the local anisotropy parameters or any combination of these various parameters.Type: ApplicationFiled: July 25, 2007Publication date: February 28, 2008Inventor: Robert Soubaras
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Publication number: 20080049553Abstract: In accordance with the present invention, a method that utilizes 3D overall view (O-view) for interactively interpreting geophysical and geological data to produce instantaneously sub-surface geologic maps, geologic features, cross-sections and models, are disclosed. The system provides the user a new capability of interactively interpret seismic data for immediate response. The system allows users to make any corrections interactively on instantaneous basis that is necessary as the interpretation progresses.Type: ApplicationFiled: August 28, 2006Publication date: February 28, 2008Inventors: Anil Chopra, Dennis Ross Yarwood, Bijoy Chattopadhyay, Rajesh Kumar Bhairampally, Steven Jerome Malecek
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Publication number: 20080049554Abstract: Systems and methods are provided for acquiring seismic data using a wireless network and a number of individual data acquisition modules that are configured to collect seismic data, and forward data to a central recording and control system. In one implementation, a number of remote modules (301) are arranged in lines. Base station modules (302) receive information from the lines and relay the information to a central control and recording system (303). Radio links operating on multiple frequencies (F1-F12) are used by the modules (301). For improved data transfer rate, radio links from a remote module (301) leap past the nearest remote module to the next module closer to the base station.Type: ApplicationFiled: October 4, 2006Publication date: February 28, 2008Applicant: WIRELESS SEISMICInventors: Douglas Crice, Mihai Beffa
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Publication number: 20080049555Abstract: A method and a system for detection and position determination of chips, which transmit ultrasound signals in a room. The system comprises electronic identification chips, which are attached to objects that have to be monitored. Each chip is equipped with a transmitter and a receiver. The signals are received by a plurality of detector units, which are connected to a detector base unit that registers and interprets the signals transmitted form the identification chips. Detector base units located in different rooms are interconnected in a network and transmit processed information to one or more central units for further interpretation and sorting. The special feature of the invention is that line interference is substantially removed, and it is possible to determine position even though the identification chips are in motion.Type: ApplicationFiled: August 20, 2007Publication date: February 28, 2008Applicant: Sonitor Technologies ASInventors: Sverre Holm, Rune Holm, Ole Hovind
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Publication number: 20080049556Abstract: A playing card hand protector (after cards are dealt from a playing card deck to individual players, the cards held by player (s) is considered a hand) skill development device with a programmed clock built-in, for timing, signaling, in the form of sound and lighting. The device also allows for data storage. It is rectangular in shape and similar to that of a standard size playing card. It's depth is approximately one-eighth to one quarter inch (? to ¼), a rectangular body with an upper surface, a lower surface and a continuous sidewall. In addition, the product will consist of an on/off switch. The purpose of this product is to multi-functional. Specifically: 1) protect the integrity of the game 2) conceal the value of the hand 3) protect the hand from being mucked or called dead 4) improve playing skills through training, eg., teach player(s) to time his/her action(s) and reaction(s) while in play, thus minimizing other players ability to read the strength or weakness of the hand in play.Type: ApplicationFiled: April 20, 2006Publication date: February 28, 2008Inventor: Beaunos Pernell Smith
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Publication number: 20080049557Abstract: A common drive device for date/am/pm display to change transmission ratio of driven mechanism with 24H as a stepping cycle found with the date display in window or indicator hand of the conventional timepiece into that with 12H as a stepping cycle; 00:00 at midnight and 12:00 at noon being usually set as the stepping timings for the 12H stepping cycle; or alternatively, 6:00 am and 6:00 pm, or any other pairs that are 12 hours separated from each other may be selected as required.Type: ApplicationFiled: August 24, 2006Publication date: February 28, 2008Inventor: Tai-Her Yang
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Publication number: 20080049558Abstract: A radio-controlled timepiece has a reception means that receives a standard radio signal containing time information; a demodulation means that demodulates the standard radio signal received by the reception means and outputs a demodulated signal; a waveform discrimination means that discriminates the waveform of the demodulated signal based on a specific waveform discrimination standard, and outputs a code corresponding to the waveform; a time information conversion means that converts the code output by the waveform discrimination means to time information; and a waveform discrimination standard changing means for changing the waveform discrimination standard.Type: ApplicationFiled: August 3, 2007Publication date: February 28, 2008Applicant: Seiko Epson CorporationInventor: Eisaku Shimizu
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Publication number: 20080049559Abstract: A locking device comprising: a lock body; a plurality of dial rings; and a fixing member which is elongated in shape and is locked by being directly fixed with the plurality of dial rings, wherein said fixing member includes a convex-concave part with repeated concaves and convexes formed in the longitudinal direction of said fixing member, each of said dial rings includes a cutout which is provided on a part of the circumferential direction in such a manner that allows said fixing member to be freely inserted/withdrawn at a rotation position which is the unlocking position and that one of said dial ring abuts the convexes of the concave-convex part at a rotation position except for the unlocking position, said locking device includes a passage for inserting/withdrawing said fixing member, a part of the passage is a hole which reaches said dial rings from outside said locking device, and the hole is curved or flexed such that said dial rings are invisible from outside said locking device via the hole, and thuType: ApplicationFiled: October 24, 2007Publication date: February 28, 2008Inventor: Teruaki Matsushita
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Publication number: 20080049560Abstract: A watch band construction in which the watch band itself forms at least a part of a watch casing. The watch band includes an integral casing portion that forms at least a part of a casing assembly for the watch. The casing portion of the watch band can then be securely affixed to a mating casing portion using any desired fastening technique.Type: ApplicationFiled: March 15, 2007Publication date: February 28, 2008Applicant: Nike, Inc.Inventors: Brad N. Clarkson, Bo Stefan Andren
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Publication number: 20080049561Abstract: A timepiece having an external case, a sound source disposed inside the external case, an internal filter that is gas permeable and waterproof and is disposed opposite with a gap to the external case and the sound source, and a communication opening that communicates the space between the external case and the internal filter with the outside. The internal filter is a porous thin film that has a large number of small holes and assures waterproofness preventing water from passing the small holes for at least ten minutes when in contact with water at normal pressure.Type: ApplicationFiled: August 10, 2007Publication date: February 28, 2008Applicant: Seiko Epson CorporationInventor: Noriaki OZAWA
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Publication number: 20080049562Abstract: A control for operating a portable electronic device includes a bezel surrounding a display for the portable electronic device. The bezel is resiliently supported so that it can rock toward the electronic device. One or more portions of the bezel are then positioned relative to inputs for the electronic device, such that rocking of the bezel activates at least one input.Type: ApplicationFiled: August 27, 2006Publication date: February 28, 2008Inventors: Bo Stefan Andren, Brad N. Clarkson, Stephen Dylan Berry
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Publication number: 20080049563Abstract: An optical element for being carried on a slider moving over a recording medium, the optical element being made of a fluid material that transmits light guided from a light source, the optical element which includes a groove an first end which is open and an second end is closed, and a deflection surface for deflecting a light coming from the aforementioned second end of the groove, wherein the thickness of the aforementioned fluid material forming the bottom of the groove is greater on the second end than on the first end.Type: ApplicationFiled: August 14, 2007Publication date: February 28, 2008Inventors: Kenji Konno, Koujirou Sekine
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Publication number: 20080049564Abstract: A reading method for finding if a disc is placed reversely used in an optical disc drive is provided. The optical disc drive has a spindle motor, an optical pickup head having a lens, a fine actuator and a sled actuator. Firstly, a disc is placed into the optical disc drive. Next, the spindle motor rotates the disc. After that, a laser light of the optical pickup head is shot on the disc. Next, the lens is moved such that the laser light follows a single data track. Then, a central error signal of the lens is measured continuously. Afterwards, if the central error signal increases progressively, the optical disc drive finds the disc placed reversely, and the disc is ejected from the optical disc drive.Type: ApplicationFiled: August 24, 2007Publication date: February 28, 2008Applicant: LITE-ON IT CORPORATIONInventors: Po-Chuan Su, Yi-Chuan Pan, Mu-Shu Tsai
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Publication number: 20080049565Abstract: There are provided a light-receiving element for receiving light reflected from an optical recording medium, an optical head using the element, and an optical recording/reproducing apparatus using the element. In particular, the light-receiving element can be manufactured at low cost and in a simple manner and is configured to receive light from a short-wavelength laser source (having a wavelength of 402 nm to 413 nm). The light-receiving element includes a silicon substrate in which a light-receiving portion is formed; a circuit board for mounting the silicon substrate; at least one or more wires for electrically connecting the silicon substrate and the circuit board; a cover layer for covering the wires; and an exposed portion for exposing the light-receiving portion outside.Type: ApplicationFiled: August 13, 2007Publication date: February 28, 2008Applicant: TDK CORPORATIONInventors: Tomohiko Ishida, Jun Ono
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Publication number: 20080049566Abstract: The optical pickup device according to the present invention includes: a light source which emits light at first, second and third wavelengths; an optical path combining unit which combines vectors of the light at the first, second and third wavelengths which is emitted by the light source, and matches optical axes of the light at the first wavelength and the light at the third wavelength; a light condensing unit which condenses the light from the optical path combining unit onto the optical information storage medium; a diffraction element which diffracts light at the first, second and third wavelength which is reflected from the optical information storage medium, in a first direction and a second direction respectively; a first photo detector which receives light at the first, second and third wavelength that is diffracted in the first direction by the diffraction element; a second photo detector which receives light at the first and third wavelength that is diffracted in the second direction by the diffraType: ApplicationFiled: June 14, 2007Publication date: February 28, 2008Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Shinichi HAMAGUCHI, Naoki NAKANISHI, Tatsuya NAKAMORI, Naoto SHIMADA
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Publication number: 20080049567Abstract: In the first and second light-receiving regions equally divided into two in parallel with the track of the optical disc, the reflected light received from the optical disk is converted into electric signals and fed out by individual light-receiving regions. Then, the light-receiving ratio indicating the ratio of amounts of received light is calculated from the amplitude of the electric signal generated in the first light-receiving region and the amplitude of the electric signal generated in the second light-receiving region. Then, it is determined whether or not an absolute value of the light-receiving ratio is larger than a predetermined vale. When the absolute value is larger, the movement of the objective lens in a radial direction is corrected by incorporating a predetermined correction value.Type: ApplicationFiled: July 27, 2007Publication date: February 28, 2008Inventor: Hiroshi Mitsuda
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Publication number: 20080049568Abstract: An aberration correction element includes a support substrate, a plurality of piezoelectric elements disposed on the support substrate, each of which is made up of a piezoelectric member and electrodes disposed at the upper and the lower sides of the piezoelectric member, and reflection portion disposed at the upper portion of the plurality of piezoelectric elements so as to reflect incident light. The reflection portion is a set of rectangular mirror segments of the same number as the number of the piezoelectric elements. The individual mirror segments are independent of each other and are bonded to upper sides of the individual piezoelectric elements, respectively.Type: ApplicationFiled: August 23, 2007Publication date: February 28, 2008Inventor: Kenshou Miyatake
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Publication number: 20080049569Abstract: In an optical pickup device which is compatible with two light beam having two wavelengths, a beam shaping mirror is arranged which has an incident surface and a reflecting surface that are disposed in non parallel relation, and makes light intensity distribution of the light beam emitted from a light source that has the light intensity distribution in a shape of ellipse, close to a circular shape by reflecting the light beam coming into the incident surface by the reflecting surface. A diffraction grating is formed on the reflecting surface of the beam shaping mirror, at least one of the two light beams having different wavelengths emitted from the light source is diffracted by the diffraction grating, and directions of optical axes of the two light beams which are output from the beam shaping mirror are made substantially the same.Type: ApplicationFiled: August 23, 2007Publication date: February 28, 2008Inventors: Seiji Takemoto, Hitoshi Fujii, Kenji Nagashima
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Publication number: 20080049570Abstract: Minimum deflection acceleration point detection, focus pull-in, and layer jump methods, and an optical disc drive capable of performing the methods. The method of detecting a minimum deflection acceleration point in an optical disc drive includes rotating a disc loaded in the optical disc drive, detecting a first minimum deflection acceleration point of the disc during one rotation cycle of the disc, and detecting a second minimum deflection acceleration point of the disc during one rotation cycle of the disc. Thus, a stable focus pull-in and layer jump is available.Type: ApplicationFiled: March 2, 2007Publication date: February 28, 2008Applicant: Samsung Electronics Co., Ltd.Inventors: Young-Jae Park, Kab-kyun Jeong, Jong-hyun Shin
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Publication number: 20080049571Abstract: An apparatus and a method for compensating periodic signal in an optical disc drive are described. The control apparatus includes an amplitude processing unit, a phase processing unit, and a wave generator. The amplitude processing unit processes the amplitude of the input signal (Sin) based on a reference signal (Sref) for generating an amplitude signal (Sad) wherein the amplitude signal (Sad) has at least one amplitude value (Vad). The phase processing unit processes the phase of the input signal (Sin) based on the reference signal (Sref) for generating a phase signal (Spd) wherein the phase signal (Spd) has at least one phase value (Vpd) during the cycle of the reference signal (Sref). The wave generator generates a compensated wave signal (Scom) based on the amplitude value (Vad) and the phase value (Vpd) during the cycle of the reference signal (Sref), and the wave generator outputs the compensated wave signal (Scom) for compensating the periodic signal of the input signal (Sin).Type: ApplicationFiled: August 7, 2007Publication date: February 28, 2008Applicant: MEDIATEK, Inc.Inventor: Kuo-jung Lan
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Publication number: 20080049572Abstract: A spherical aberration correcting device includes liquid crystal, a first transparent electrode and a second transparent electrode. The first transparent electrode works as a common electrode. The second transparent electrode has different electrode patterns for a first region and a second region that surrounds the first region. The electrode pattern in the first region is a concentric interference pattern. The electrode pattern in the second region has a plurality of concentric regions. The plurality of concentric regions can be supplied potentials independently.Type: ApplicationFiled: August 22, 2007Publication date: February 28, 2008Inventors: Mitsuyoshi Sasabe, Hitoshi Fujii, Kenji Nagashima
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Publication number: 20080049573Abstract: Additional information is generated for each of unit recording blocks in a recording medium. The generated additional information is recorded on a first area in the corresponding unit recording block. A piece of file data is recorded on a second area in each of the unit recording blocks. The second area differs from the first area. The additional information for each of the unit recording blocks includes 1) file identification information for identifying the file data, 2) next-sector address information indicating an address of a unit recording block following the present unit recording block, and 3) first-sector identification information indicating whether or not the present unit recording block is first one of the unit recording blocks assigned to the file data. The additional information may further include effective-data identification information indicating whether a piece of the file data recorded on the present unit recording block is effective or ineffective.Type: ApplicationFiled: July 11, 2007Publication date: February 28, 2008Applicant: Victor Company of Japan, Ltd.Inventors: Toshio Kuroiwa, Masayoshi Nishitani, Seiji Higurashi
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Publication number: 20080049574Abstract: To provide a method of managing data in a situation where audio and video data, acquired by a single video recording session, has been split into multiple files. A data processor writes a data stream, representing video, and management information for playing back the video based on the data stream on at least one storage medium. In the data stream, picture data of respective pictures forming the video and time information, showing presentation times of the respective pictures, are stored in association with each other. The data processor includes: a processor for generating, as the management information, a table that associates the time information, storage locations of the picture data in the data stream, and file information identifying a stream file to store the picture data with each other for one or more pictures; and a controller for writing the data stream and the management information as one or more stream files and as one or more management information files, respectively, on the storage medium.Type: ApplicationFiled: September 13, 2005Publication date: February 28, 2008Inventor: Hiroshi Yahata
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Publication number: 20080049575Abstract: A record and reproduction apparatus includes: a CPU; a memory; a recording medium control unit configured to read out data from a recording medium; a reproduction buffer configured to temporarily store stream data such as an image and an audio out of the data read by the recording medium control unit; a reproduction processing unit configured to decode and reproduce the stream data temporarily stored in the reproduction buffer; and an access control unit configured to control the timing by which the access control unit switches between access to the memory and access to the reproduction buffer so that the reproduction processing does not break off during reproduction of the stream data while supervising the state of the reproduction buffer; and to manage the memory and the recording medium control unit in each transaction.Type: ApplicationFiled: August 22, 2007Publication date: February 28, 2008Inventors: Yoshihisa Okaya, Tsuyoshi Sato, Mitsuya Nakahara, Kenichiro Uda
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Publication number: 20080049576Abstract: According to an embodiment, there is provided an optical storage media recording/reproducing apparatus for calibrating an amount of light energy output by the recording/reproducing apparatus during a recording operation, the recording/reproducing apparatus comprising: a reproducing unit to read unique property information from a writable optical disc inserted into the apparatus, which was pre-recorded on the disc during its manufacture; a controller to access stored data concerning optimum test writing parameters relevant to the recording/reproducing apparatus using the unique property information; and a recording unit to write test data on the disc in accordance with the accessed stored data concerning the optimum test writing parameters.Type: ApplicationFiled: September 13, 2007Publication date: February 28, 2008Inventor: Jeong Kim
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Publication number: 20080049577Abstract: There are provided an optical disk device and tilt correction processing method for performing recording/reproduction by rapidly acquiring an optimal tilt correction value for an optical disk having a plurality of recording/reproducing layers. In an optical disk device capable of recording or reproducing information by irradiating a laser beam to each of a plurality of recording/reproducing layers of an optical disk, the tilt value is stepwise set within a predetermined range at a predetermined radius position of the recording/reproducing layer located at the farthest distance from the laser beam irradiation side so that an optimal tilt correction value can be obtained from the quadratic function by the method of least squares of the jitter or the like obtained from the disk. By applying the optimal tilt value obtained to the other recording/reproducing layer, it is possible to start recording or reproduction in a short time.Type: ApplicationFiled: October 12, 2007Publication date: February 28, 2008Applicant: Hitachi, Ltd.Inventors: Koji Iijima, Motoyuki Suzuki, Junji Nakajima
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Publication number: 20080049578Abstract: An information recording apparatus (300) is for recording record information onto an information recording medium (100) comprising a first recording layer (L0 layer) and a second recording layer (L1 layer) to record therein the record information by irradiating laser light. The information recording apparatus is provided with: a recording device (352) for recording the record information into at least one of the first recording layer and the second recording layer by irradiating the laser light; and a controlling device (354) for controlling the recording device to record the record information into a target area (115a), which is a recording area of the second recording layer corresponding to a recording area (105a) of the first recording layer in which the record information is recorded, if the record information is recorded into the second recording layer.Type: ApplicationFiled: June 10, 2005Publication date: February 28, 2008Inventor: Kazuo Kuroda
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Publication number: 20080049579Abstract: A multilayer recording medium has a three-layered structure for an increased capacity, including an L0 layer, an L1 layer, and an L2 layer in order from the side farthest away from the incident surface of laser light. The recording layers are made of respective recording film materials selected so that the recording films of the recording layers have respective recording-reaction temperatures T0, T1, and T2, where T0?T1?T2 and T0<T2. This makes the recording sensitivities of the respective recording layers substantially the same and, by extension, the optimal recording powers of the laser light for the respective recording layers substantially the same so that the recording power of the laser light necessary for recording information on the L0 layer in particular is prevented from becoming excessively high.Type: ApplicationFiled: July 16, 2007Publication date: February 28, 2008Applicant: TDK CORPORATIONInventors: Takashi Kikukawa, Koji Mishima, Hidetake Itoh
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Publication number: 20080049580Abstract: An optical pickup device includes a plurality of light sources for emitting light beams having different wavelengths; an objective lens for focusing the light beams emitted from the light sources on a recording surface of an optical recording medium; and a photo detector for receiving the light beams reflected from the recording surface.Type: ApplicationFiled: August 22, 2007Publication date: February 28, 2008Inventors: Mika Hamaoka, Hitoshi Fujii, Kenji Nagashima
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Publication number: 20080049581Abstract: An optical pick-up including a first objective lens having a numerical aperture (NA) suitable for a BD, a second objective lens having an NA suitable for an HD-DVD, a light source to emit light beams suitable for the BD and the HD-DVD, a first beam splitter to transmit and reflect the emitted beams emitted to be selectively guided to one of the first and second objective lenses, a grated diffraction element to split the emitted beams into a zeroth order main beam and ±1st order sub-beams that can be projected on a single track of the BD and the HD-DVD in series, a first optical detector to receive a beam reflected by and returned from the BD, and a second optical detector to receive a beam reflected by and returned from the HD-DVD, wherein the first and second optical detectors are positioned at similar distances from the first beam splitter.Type: ApplicationFiled: April 10, 2007Publication date: February 28, 2008Applicant: Samsung Electronics Co., Ltd.Inventors: Myoung Seok Kim, Jang Hoon Yoo
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Publication number: 20080049582Abstract: An optical pickup device includes a spherical aberration compensating element which can compensate the spherical aberration of a light beam for a BD or a CD, and a phase shift element which can compensate the spherical aberration of a light beam for a DVD. In the spherical aberration compensating element, a first region which can compensate the spherical aberration of a light beam for a CD by diffraction and diffusion, and a second region which is formed to surround the first region and can compensate the spherical aberration of a light beam for a BD by changing phase distribution, are formed. Functions of the first region and the second region can be electrically controlled in ON-OFF manner.Type: ApplicationFiled: August 23, 2007Publication date: February 28, 2008Inventors: Ken Nishioka, Hitoshi Fujii, Kenji Nagashima
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Publication number: 20080049583Abstract: An optical pickup device for resolving problems with deterioration in the RF signal due to crosstalk from the preformatted structures in optical disks which provide address information, especially the Land Pre-Pit signal in optical disks such as DVD-R and DVD-RW disks with a LPP (Land Pre-Pit) structure. When the ratio of electric amplitude (Etan/Erad) of the incident light onto the disk, where Etan and Erad shows the electric amplitude of the foregoing light in the tangential and radial direction of the disk, is set to ? then the optical pickup device is set so that 0.7<? (electrical amplitude ratio)<0.8.Type: ApplicationFiled: February 12, 2007Publication date: February 28, 2008Inventors: Tatsuro IDE, Kotaro Oishi
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Publication number: 20080049584Abstract: An optical pick-up including a fold mirror having an achromatic quarter-wave plate coating is provided. To allow the thin film coating to efficiently provide the quarter-wave retardation, the optical pick-up is configured such that the polarization of light incident on the fold mirror is at a predetermined angle. According to one embodiment, the predetermined angle is provided by rotating the light sources. According to another embodiment, the predetermined angle is provided by rotating a plane containing the light sources and the beam combiners. In each embodiment, the beam combiners and the fold mirror are arranged along the same axis to further improve efficiency.Type: ApplicationFiled: August 22, 2007Publication date: February 28, 2008Applicant: JDS UNIPHASE CORPORATIONInventors: Kim Leong TAN, Karen Denise HENDRIX
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Publication number: 20080049585Abstract: An optical pickup apparatus comprising: an objective lens configured to apply a laser beam for recording or reproducing information to a plurality of layers of information recording surfaces selectively, the plurality of layers of information recording surfaces being included in an optical disc mounted on a turn table; and a spherical aberration correction lens configured to be movable on a light path on the side where the laser beam is incident on the objective lens, so as to correct spherical aberration when the laser beam is applied from the objective lens to any one of the plurality of information recording surfaces in the optical disc, a distance between the spherical aberration correction lens and the objective lens on each light path when the laser beam is focused on each of the plurality of layers of information recording surfaces in the optical disc with movement of the spherical aberration correction lens, including a distance at which optical magnification of an optical system including the sphericType: ApplicationFiled: June 1, 2007Publication date: February 28, 2008Applicants: SANYO ELECTRIC CO., LTD., SANYO OPTEC DESIGN CO., LTD.Inventor: Hiroyuki Shindo
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Publication number: 20080049586Abstract: According to one embodiment, an optical pickup apparatus and an optical information recording/reproducing apparatus including an embodiment of the present invention has an objective lens for condensing a laser beam on a recording surface of an information recording medium (an optical disc), a collimator lens for collimating a laser beam guided to an objective lens, a magnification change lens which gives a predetermined convergency to a laser beam guided from a light source to a collimator lens, and leaves divergence after the laser beam passes a collimator lens, and an optical path length correction mechanism for changing an optical path length of a reflected laser beam that is a laser beam condensed and reflected from a recording surface of a medium through a magnification change lens.Type: ApplicationFiled: August 15, 2007Publication date: February 28, 2008Inventor: So ISHIKA
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Publication number: 20080049587Abstract: A complex optical element includes a first optical portion and a second optical portion which are made of materials different from each other. The second optical portion is bonded to an optical functional face of the first optical portion. A concavoconvex face part is formed at the central part of the bond area between the first optical portion and the second optical portion.Type: ApplicationFiled: August 15, 2007Publication date: February 28, 2008Inventors: Katsuhiko Hayashi, Jun Murata, Yasuhiro Tanaka, Michihiro Yamagata
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Publication number: 20080049588Abstract: A method for recording information on a computer-readable medium and a computer-readable recording medium having a first area for storing a plurality of access control data in a recording unit, each of the access control data having a data structure to control writing to and/or reading from the computer-readable recording medium and a second area for storing status information indicating status of the access control data, per the recording unit.Type: ApplicationFiled: October 16, 2007Publication date: February 28, 2008Inventor: Yong Park
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Publication number: 20080049589Abstract: A high density data storage device and a data recording or reproduction method using the same, which can record or reproduce high density data without contact, thereby preventing data errors due to contact are provided. The high density data storage device uses a recording medium and a probe. The recording medium is a thin film made from phase change material or oxide resistance change material, and the probe has a tip formed in a lower portion thereof, which moves with a spacing from the top of the recording medium. Further, recording or reproduction of data is performed through electric field or heat emission, which is generated in the tip of the probe, without direct contact between the recording medium and the probe, so that it is possible to remove instability caused by contact between the recording medium and the probe and to stably record or reproduce data in or from the recording medium without errors.Type: ApplicationFiled: February 26, 2007Publication date: February 28, 2008Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seung Bum Hong, Ju Hwan Jung, Hyoung Soo Ko
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Publication number: 20080049590Abstract: Memory devices and methods of storing information are disclosed. Also disclosed are methods of storing information in multi-bit format and memory devices with information stored in multi-bit format. Further disclosed are methods of reading stored information.Type: ApplicationFiled: August 10, 2007Publication date: February 28, 2008Inventors: Lujia Bu, Edward C. Greer, Charles R. Szmanda
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Publication number: 20080049591Abstract: In an information recording medium comprising at least a substrate, a recording layer, and a resin layer, the substrate is formed with at least a pit corresponding to a read only area 31 and a groove corresponding to a recording/reproducing area 32 without overlapping with each other. A reflectivity of the recording layer is specified to be more than 10%. The recording layer and the resin layer are continuously adhered over both the read only and recording/reproducing areas 31 and 32. The information recording medium is characterized in that both push-pull signal outputs T1 and T2, which are reproduced from the read only area 31 and the recording/reproducing area 32 respectively, are more than 0.1 and satisfy an inequality 1.5?T1/T2?0.5.Type: ApplicationFiled: October 20, 2007Publication date: February 28, 2008Applicant: Victor Company of Japan, LimitedInventor: Tetsuya Kondo