Patents Issued in May 31, 2007
  • Publication number: 20070121443
    Abstract: In a focus-servo control method within an optical disc recording/reproducing apparatus, for recording or reproducing information onto/from an optical information recording medium having a track with a land and a groove, which are formed in a spiral manner on an information recording surface thereof, with moving an optical spot from the land to the groove, or from the groove to the land via an exchange portion therebetween, a focus offset value is exchanged from an offset value for the land or the groove to the offset value for the groove or the land, gradually. within a region starting from a position advancing by a predetermined time period from appearance of the exchange portion exchanging from the land to the groove or from the groove to the land, thereby providing a technology for dissolving fall down of recording/reproducing quality, due to the L/G exchange portion when recording/reproducing the information onto/from the optical disc having the land and the groove on the recording surface thereof.
    Type: Application
    Filed: June 26, 2006
    Publication date: May 31, 2007
    Inventors: Toru Kawashima, Hiroharu Sakai, Takeyoshi Kataoka, Motoyuki Suzuki
  • Publication number: 20070121444
    Abstract: Disclosed is an optical disc apparatus that sets a plurality of virtual zones, which correspond to a plurality of zones that are arranged in the radial direction of an optical disc, for a plurality of recording layers of the optical disc. When a servo signal distortion is detected in a virtual zone to change the rotation speed of the optical disc to a low speed in the virtual zone during an information recording or reproduction operation relative to a first recording layer, the optical disc apparatus stores the change information. When a recording or reproducing operation is to be performed in a virtual zone of a second recording layer, which is in the same disc radial position as the virtual zone of the first layer, the optical disc apparatus changes the rotation speed of the optical disc for the virtual zone to a low speed in accordance with the change information.
    Type: Application
    Filed: July 26, 2006
    Publication date: May 31, 2007
    Inventors: Nobuhiro Takeda, Mitsuru Harai
  • Publication number: 20070121445
    Abstract: Disclosed is a method of reproducing optical information by applying laser light to the medium while rotating a recording medium having concentric information tracks or a spiral information track so that the linear velocity of the medium is constant, and thereby reproducing the information recorded on the recording medium by the reflected light. In this method, in moving a reproduction radial position to a second radial position different from the current position, a laser power is changed to second laser power, which is different from current laser power, and then the light spot is moved to the second radial position. This method can prevent degradation of a medium in reproduction light resistance caused by substantially high power reproduction, and erasing or destruction of already recorded data that may be caused, in high-speed recording of a rewritable-type or write-once-type optical disc, when the linear velocity at the time of reproduction becomes slow, e.g.
    Type: Application
    Filed: July 25, 2006
    Publication date: May 31, 2007
    Inventors: Koichiro Nishimura, Tsuyoshi Toda, Mitsuru Harai, Koichi Suzuki, Toru Kawashima
  • Publication number: 20070121446
    Abstract: The object of this invention is to provide an optical disc apparatus and an optical disc reproducing method that can realize an excellent reproducing operation by suppressing noise in the optical disc apparatus using an optical attenuator. In order to solve this object, a control voltage of the optical attenuator is changed according to reproduction power when reproducing the optical disc and an ambient temperature of the optical attenuator. In addition, the amplitude of a high frequency current for driving a laser diode is changed according to an attenuation factor of the optical attenuator.
    Type: Application
    Filed: July 27, 2006
    Publication date: May 31, 2007
    Inventors: Manabu Shiozawa, Kazutoshi Shigeta
  • Publication number: 20070121447
    Abstract: The object of the present invention is to curtail the time required from the receipt of a demand for certification processing of a rewritable optical disk from an apparatus of the higher order to the receipt of a demand for recording processing. In order to achieve this object, a digital data recording method for recording on a rewritable optical disk includes certification processing including a first step of recording certification data for the certification processing on the optical disk, a second step of recording user data different from the certification data on the optical disk after the first step, and a third step of reproducing the data recorded in the first step or the second step after the second step, and switches the certification processing based on the result reproduced in the third step.
    Type: Application
    Filed: July 28, 2006
    Publication date: May 31, 2007
    Inventors: Taku Hoshizawa, Atsushi Fuchiwaki
  • Publication number: 20070121448
    Abstract: Parametric multichannel information is written onto a normal standard audio compact disc, e.g. in the user subchannels, so that the CD enables normal stereo reproduction with a normal reproduction device, or multichannel reproduction with a supplementary device which is easy to connect and which reads out both the stereo information and the parametric multichannel information from the audio CD actually conforming with the standard, and reconstructs more than two audio channels therefrom.
    Type: Application
    Filed: August 18, 2006
    Publication date: May 31, 2007
    Inventors: Harald Popp, Stefan Geyersberger, Wolfgang Fiesel
  • Publication number: 20070121449
    Abstract: An information recording medium includes: a first recording layer to for recording first information; and one or a plurality of second recording layers, disposed on the first recording layer, for recording second information. Each recording layer has a predetermined area in which power calibration is performed to detect an optimum recording power of laser light for recording, which is transmitted through the first recording layer and other layers of the second recording layers, the first recording layer, the other layers of the second recording layers, and each of the second recording layers arranged in this order as viewed from an irradiation side of the laser light, and in a facing area, which faces the predetermined area, in the other layers of the second recording layers and the first recording layer, by forming embossed pits.
    Type: Application
    Filed: June 6, 2005
    Publication date: May 31, 2007
    Inventors: Shoji Taniguchi, Eiji Muramatsu, Toshio Suzuki, Masahiro Kato, Kazuo Kuroda, Kunihiko Horikawa
  • Publication number: 20070121450
    Abstract: The present invention provides a recording method for recording information on a recording medium under one recording condition of a plurality of recording conditions. The recording method includes the steps of: (a) recording a plurality of test information on the recording medium under the plurality of recording conditions; and (b) recording the information on the recording medium under one recording condition of the plurality of recording conditions, wherein the step (b) includes: the step of (b-1) calculating differences between each of a plurality of test signals obtained by reproducing the plurality of test information recorded on the recording medium and at least one desired signal; and (b-2) selecting one recording condition of the plurality of recording conditions by referring to the calculated differences.
    Type: Application
    Filed: November 1, 2004
    Publication date: May 31, 2007
    Inventors: Mamoru Shoji, Harumitsu Miyashita, Isao Kobayashi, Takahiro Sato
  • Publication number: 20070121451
    Abstract: In the present invention, the processing sequence of a microprocessor for restructuring the recording parameters when changing the recording system from the CAV system to a CLV system is as follows: (1) interrupt the recording process; (2) calculate linear velocity at a broken point where recording linear velocity becomes constant; (3) calculate a third recording parameter in the linear velocity by a linear interpolation based on first and second recording parameters which are corrected by test writing, replacing all the recording parameters for an outer circumference side from a radius position where the linear velocity becomes Cx, with the third recording parameter; and (4) restart recording with the third recording parameter as a recording condition.
    Type: Application
    Filed: August 1, 2006
    Publication date: May 31, 2007
    Inventors: Koichiro Nishimura, Tsuyoshi Toda, Atsushi Yamada, Toru Kawashima
  • Publication number: 20070121452
    Abstract: Data of capacity of about one-severalth of full capacity of a layer 0 and a layer 1 is recorded in a test disk in a range from the layer 0 to the layer 1, and middle areas of the layer 0 and the layer 1 are expanded accordingly. This test disk is mounted on a verification target drive, and an inquiry about a starting position of the middle area, a record finishing position of user data, additional writing stating position of the disk and an additionally writable capacity (free capacity) is made with the verification target drive from an evaluation apparatus. When responding appropriately to this inquiry, the verification target drive is capable of appropriately recognizing presence/absence of an expansion of the middle area, a propriety of additional writing of this disk, the additionally writable capacity, and the additional writing starting position.
    Type: Application
    Filed: November 21, 2006
    Publication date: May 31, 2007
    Inventors: Morio Nakatani, Katsuki Hattori
  • Publication number: 20070121453
    Abstract: The invention relates to a device for recording recordable media, for example recordable DVD media types, a number of which is currently available in the market Upon receipt of a medium and assessment that the medium is a recordable medium, the device attempts to recognize it, i.e. to recognize its media type. If the recordable medium is not recognized, a reading operation is anyway performed. In this way it is left open the possibility to access recordable media belonging to a recordable media type unknown to the device but from which the device can nevertheless read, e.g. a newly introduced media type belonging to a media family known to the device. If applied to a device for recoding DVD, the invention makes it possible to read from a DVD+R9 medium. The invention further relates to a method for accessing a medium.
    Type: Application
    Filed: November 4, 2004
    Publication date: May 31, 2007
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventor: Robert Ponsen
  • Publication number: 20070121454
    Abstract: Within an optical disk recording/reproducing apparatus, in which a beam spot is irradiated upon an optical disk loaded therein, to obtain a reflection light obtainable therewith, and thereby conducting recording or reproducing of information upon an information recording surface of the optical disk, a microcomputer (?-computer) 9 for controlling the operation of the apparatus executes a predetermined process by considering the optical disk loaded into the apparatus to be an optical disk, which is loaded previously, executes a retry process when determined that the optical disk loaded into the apparatus is not the optical disk loaded into the apparatus previously, as a result of the process mentioned above, executes a process for recognizing kind of the optical disk inserted, and memorizes information of the kind of the optical disk inserted into said apparatus, which is obtained in the recognizing process mentioned above, thereby shortening the startup time of the apparatus, as a whole thereof.
    Type: Application
    Filed: July 17, 2006
    Publication date: May 31, 2007
    Applicant: Hitachi-LG Data Storage, Inc.
    Inventors: Toshio Saitoh, Kikuo Shimizu
  • Publication number: 20070121455
    Abstract: A tilt compensating device and method of performing normal tilt compensation in the event of a servo emergency which may occur during reproduction of data from an optical recording medium are provided. The tilt compensating device includes: an optical pickup; a tilt adjusting unit that adjusts a tilt angle of the optical pickup; a jitter detecting unit that detects an amount of jitter in a reproduction signal output from the optical pickup; and a controlling unit that monitors speed at which the optical recording medium operates using a phase-locked loop (PLL) signal generated from the reproduction signal and the degree of focus of the optical pickup, performs an operation to return to a normal state if any abnormality occurs, and controls operation of the tilt adjusting unit by comparing an amount of jitter detected at regular intervals against a reference.
    Type: Application
    Filed: January 26, 2007
    Publication date: May 31, 2007
    Applicant: SAMSUNG ELETRONICS CO., LTD.
    Inventors: Jee-hyung Park, Dong-ki Hong, Soo-yul Jung, Ju-wha Jin
  • Publication number: 20070121456
    Abstract: A defect signal generating circuit comprises a low pass filter circuit which receives an input signal whose signal level is changed from a reference level to a higher level or a lower level corresponding to a dark defect or a bright defect of a optical disk, and outputs a low pass filter signal having a time constant longer than the input signal; an operation circuit which operates a difference between a level of the input signal and a level of the low pass filter signal, and outputs a first operation value; a defect determination circuit which determines whether a defect is the dark defect or the bright defect on the basis of the sign of the first operation value; a defect detection determination circuit which compares the absolute value of the first operation value with the absolute value of a first reference value, and determines that a defect is detected when the absolute value of the first operation value is larger than the absolute value of the first reference value; and an output circuit which outputs
    Type: Application
    Filed: November 22, 2006
    Publication date: May 31, 2007
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hidetoshi Kono, Hiroaki Fujimori, Jun Wakasugi
  • Publication number: 20070121457
    Abstract: The present invention determines accurately whether trial write processing is necessary or not and eliminates unnecessary trial write processing to prevent the degradation of the data transfer rate. A control circuit, if an error is detected during reproduction of recorded data, compares a top value Vtop of an envelope of a reproduced signal with a predefined threshold value Vth for defect detection. As a result of comparison, if Vtop>Vth, trial write processing is performed; and if Vtop<Vth, trial write processing is not performed. The level of the threshold value Vth is set between time-mean level at an envelope's top value and that at an envelope's bottom value.
    Type: Application
    Filed: July 31, 2006
    Publication date: May 31, 2007
    Inventors: Atsushi Yamada, Koichiro Nishimura, Toru Kawashima
  • Publication number: 20070121458
    Abstract: According to one embodiment, a synchronicity detecting circuit to which a wobble signal reproduced from a recording track is input and which detects a synchronizing signal in the wobble signal, a synchronicity detection flag generating section which generates a synchronicity detection flag of a first level when the synchronicity detecting circuit detects the synchronizing signal, and a counter and logic determining section which resets the synchronicity detection flag to a second level when the output synchronicity detection flag of the first level remains active and when the number of non-detections of the synchronizing signal meets a predetermined condition. A physical address is thus detected when the synchronicity detection flag is at the first level.
    Type: Application
    Filed: October 25, 2006
    Publication date: May 31, 2007
    Inventor: Satoru KOJIMA
  • Publication number: 20070121459
    Abstract: The disk recording apparatus and method are arranged to specify a recording address and a recording position on an optical disk with a wobble PM (phase modulation) format through the use of a wobble reproduced signal and a track reproduced signal. The recording apparatus operates to detect address information and a synchronous signal on the optical disk that correspond with the wobble reproduced signal and the track reproduced signal sent from the optical disk respectively. Then, the address information required for specifying a disk recording track and the synchronizing timing required for specifying a linking position are selected from the detected states.
    Type: Application
    Filed: January 26, 2007
    Publication date: May 31, 2007
    Applicants: Hitachi, Ltd., Hitachi-LG Data Storage, Inc.
    Inventors: Hiroshi Hirayama, Takahiro Sunada, Takehiko Sekine
  • Publication number: 20070121460
    Abstract: A recording medium, and a method and apparatus for recording defect management information on the recording medium are disclosed. The method for recording defect management information of a recording medium includes recording a defect entry on the recording medium, wherein the defect entry includes a first field that can identify a defect entry type, a second field recording position information of a defect area within a user data area, and a third field recording position information of a replacement area within a spare area, and recording position information corresponding to the second field and/or the third field in accordance with the defect entry type decided by the first field, wherein, in case of a defect entry type having no corresponding position information, the corresponding field is set to zero (0).
    Type: Application
    Filed: November 13, 2006
    Publication date: May 31, 2007
    Inventors: Hyug Kwon, Jung Kim
  • Publication number: 20070121461
    Abstract: The recording/reproduction method of the present invention includes the steps of: repeating one of a recording operation and a reproduction operation for the optical disc n times (n: an integer greater than or equal to 2) while changing a recording/reproduction condition in a stepwise and monotonous manner m times (m: an integer greater than or equal to 2); determining m number of averaged index values obtained under the same recording/reproduction condition based on the (m×n) pieces of signal data reproduced from the optical disc; determining an optimum recording/reproduction condition based on the m number of averaged index values; and performing at least one of the recording operation and the reproduction operation for the optical disc in accordance with the optimum recording/reproduction condition.
    Type: Application
    Filed: September 17, 2004
    Publication date: May 31, 2007
    Inventors: Isao Kobayashi, Mamoru Shoji
  • Publication number: 20070121462
    Abstract: To provide a technology for improving the recording quality through edge correction of recording pulse in an optical disc apparatus. An optimum recording power of recording pulse is obtained through OPC processing according to a recording strategy with a first pulse timing; recording is performed by use of recording pulse with the optimum recording power; a first edge-shift amount of recording mark is measured from a reproduction signal to perform edge correction of recording pulse to form a second pulse timing of a recording strategy. Subsequently, recording is performed with pulse width variations of recording pulse to measure a second edge-shift amount of recording mark from a reproduction signal; and optimum edge positions of recording pulse are calculated based on the first edge-shift amount and the second edge-shift amount.
    Type: Application
    Filed: July 19, 2006
    Publication date: May 31, 2007
    Inventors: Toshiki Ishii, Tsuyoshi Toda, Tetsuya Fushimi, Masashi Imai
  • Publication number: 20070121463
    Abstract: A write type optical disk device with the PRML mode allows accuracy in the trial writing to be improved accompanied with the high speed processing while assuring the readout compatibility. A readout signal that has been A/D converted at timing that interposes the edge has its phase compensated with the even numbered FIR filter. The level at the edge point and the absolute values thereof are accumulated respectively so as to provide a circuit for detecting the edge shift and jitter. Coping with the high speed processing, the edge shift of the readout signal is detected at the position where the edge shift is around zero, thus improving the accuracy in learning of trial writing.
    Type: Application
    Filed: July 26, 2006
    Publication date: May 31, 2007
    Inventor: Hiroyuki Minemura
  • Publication number: 20070121464
    Abstract: A decoding apparatuses and a method utilized in an optical storage device are disclosed. The decoding apparatus includes: a level slicer for setting a plurality of adjustable boundary values to distinguish a plurality of signal regions, and outputting a set of state values in accordance with signal regions corresponding to an input value; and a Viterbi detector coupled to the level slicer for decoding a transmission data according to the state value.
    Type: Application
    Filed: November 22, 2006
    Publication date: May 31, 2007
    Inventor: Wei-Hung He
  • Publication number: 20070121465
    Abstract: A mark representing information of a multivalued level is recorded in each of cells arranged in a recording medium. Upon reproducing the multivalued level from a reproduction signal of the recording medium, the multivalued level of a present cell is judged by referring to a judged multivalued level of a preceding cell preceding the present cell or an ensuing cell ensuing the present cell, or by referring to the judged multivalued levels of both the preceding cell and the ensuing cell.
    Type: Application
    Filed: January 26, 2007
    Publication date: May 31, 2007
    Inventors: Akihiko Shimizu, Koubun Sakagami, Hiroyuki Miyata, Yasuhide Fujiwara
  • Publication number: 20070121466
    Abstract: PURPOSE To make it possible to record data such as user definable index information accompanying user data such as content data while keeping it possible to perform playback from an information recording medium also according to the conventional standard. CONFIGURATION The controller 19 records content data in the contents area of the user recordable area of the recording area of the optical disk 7, generates index information for referring to the contents of the content data, and records the index information in the Lead-Out area disposed outside the user recordable area of the optical disk.
    Type: Application
    Filed: July 29, 2004
    Publication date: May 31, 2007
    Inventor: Masaetsu Takahashi
  • Publication number: 20070121467
    Abstract: Before a host computer transmits image forming data to a CD-R drive, the CD-R drive transmits information of an image forming condition preset in the CD-R drive to the computer. The host computer generates, based on stored original image data, image forming data adapted to the image forming condition on the basis of the information of the image forming condition and transmits the generated image forming data to the CD-R drive. The CD-R drive forms a visual image according to the preset image forming condition on the basis of the transmitted image forming data.
    Type: Application
    Filed: November 30, 2006
    Publication date: May 31, 2007
    Applicant: YAMAHA CORPORATION
    Inventors: Hisanori Itoga, Tatsuo Fushiki
  • Publication number: 20070121468
    Abstract: Provided is a spatial light modulator SLM and a photodetector element CMOS sensor are placed on the same chip, and the alignment thereof and a relay lens system are eliminated, whereby an optical system is reduced in cost and made compact. Specifically, provided is an optical information recording and reproducing apparatus for recording information by allowing information light and reference light to interfere with each other and reproducing the information using the reference light including: a light source; a spatial light modulator for generating at least an information light with respect to a light beam from the light source; an objective lens for irradiating a recording medium with the light beam from the spatial light modulator; and a photodetector element for receiving a reproduction light from the recording medium, in which the spatial light modulator and the photodetector element are formed on the same semiconductor substrate.
    Type: Application
    Filed: November 22, 2006
    Publication date: May 31, 2007
    Applicant: Canon Kabushiki Kaisha
    Inventors: Osamu Koyama, Osamu Nagatsuka, Shinnosuke Torii, Koichiro Nishikawa
  • Publication number: 20070121469
    Abstract: Provided is a holographic optical pickup apparatus which can be reduced in thickness and production cost while having a beam shaping unit. To be specific, in a holographic optical pickup apparatus based on a holographic memory technique, a beam shaping prism for extending a short axis of light with elliptical cross section emitted from a light source is disposed between a spatial light modulator (SLM) and an objective lens. Thereby, a light beam incident on the spatial light modulator (SLM) has an elliptical cross section and is small in diameter, so that the spatial light modulator can be reduced in size and cost.
    Type: Application
    Filed: November 22, 2006
    Publication date: May 31, 2007
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Shinnosuke Torii
  • Publication number: 20070121470
    Abstract: The present invention relates to an objective lens, an objective lens unit and an optical pickup apparatus. The objective lens is provided for an optical pickup apparatus recording or reproducing information by converging a light flux with a wavelength ?1 emitted from a light source onto an information recording surface of an optical information recording medium. The objective lens is formed of: a single lens having at least one aspheric surface. In the objective lens, an effective aperture, a thickness on an optical axis, a focal length, a numerical aperture, and a refractive index satisfy the predetermined conditional expressions. The objective lens unit is provided for an optical pickup apparatus and includes an aberration correcting element and the objective lens.
    Type: Application
    Filed: November 16, 2006
    Publication date: May 31, 2007
    Applicant: Konica Minolta Opto, Inc.
    Inventors: Kentarou Nakamura, Eiji Nomura
  • Publication number: 20070121471
    Abstract: In an information reproducing apparatus in which a liquid crystal lens element is used for the selection and switching of layers, the instability of servo control during the switching of the layers due to the overlapping of signals from two layers is eliminated and the focal point is shifted onto the correct switched layer. During the switching of the liquid crystal lens, a focus bias is added depending on the direction in which the layers are switched so as to stabilize servo control. Alternatively, the objective lens is held during the switching and after the switching of the liquid crystal lens element, the hold state is released in synchronization with the rotation of the disk.
    Type: Application
    Filed: February 27, 2006
    Publication date: May 31, 2007
    Inventors: Fumio Isshiki, Hiromitsu Mori
  • Publication number: 20070121472
    Abstract: A method capable of detecting spherical aberration caused by a storage medium includes generating a plurality of light beams having distinct phases by diffracting light emitted from a light source using a diffractive optical element, measuring optical signals of the plurality of light beams having distinct phases after being reflected by the storage medium, measuring optical signals of the plurality of light beams having distinct phases after being reflected by a reflective mirror, and updating settings of an adjusting device disposed on an optical path between the diffractive optical element and the storage medium in order to compensate for the spherical aberration caused by the storage medium.
    Type: Application
    Filed: March 30, 2006
    Publication date: May 31, 2007
    Inventor: Fung-Hsu Wu
  • Publication number: 20070121473
    Abstract: Laser Scanning Microscope with a non-descanned detection and/or observation beam path, wherein a beam splitter is provided for the separation of the illumination and the detection beam paths. In the direction of the detection, at least one optical arrangement is provided for the regular transmission of the detected light, whereby between the beam splitter and the optical system, an additional optical arrangement is provided for reducing the diameter of the bundle of the beam to be imaged.
    Type: Application
    Filed: October 20, 2004
    Publication date: May 31, 2007
    Applicant: CARL ZEISS JENA GMBH
    Inventors: Ralph Lange, Ralf Wolleschensky, Michael Goelles
  • Publication number: 20070121474
    Abstract: There is provided an optical pickup apparatus which is small in size and excellent in releasing action of heat generated inside the apparatus. An optical pickup apparatus includes semiconductor lasers as light sources for emitting light, a laser driver for controlling light emitting operations of, the semiconductor lasers, a first housing in which the laser driver is housed, and a second housing in which the semiconductor lasers are housed. The first housing 31 and the second housing are separately formed and connected to each other so as to have a void portion therebetween, which penetrates the first housing and the second housing in thickness directions thereof. The laser driver and the semiconductor lasers are disposed so as to be adjacent to each other via the void portion, and housed in the housing.
    Type: Application
    Filed: November 29, 2006
    Publication date: May 31, 2007
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Makoto Akinaga
  • Publication number: 20070121475
    Abstract: The invention relates to a method of controlling the level of an input readout signal read from an optical disc. The method proposes to use an amplification step for amplifying the input readout signal by an adjustable gain factor for generating an amplified output readout signal having an amplitude in the range [I min target, I max target]. The value of this gain is derived from a feedback loop control in charge of comparing the level of the output readout signal with that of target levels I min target and I max target, and deriving a gain value taking into account the level of the input readout signal. This loop control renders it possible to clamp the input readout signal, counteracting as a consequence the decrease of the input readout signal in the case of a reflectivity reduction of the optical disc. Use: Optical disc reader.
    Type: Application
    Filed: November 30, 2004
    Publication date: May 31, 2007
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventor: Rob Otte
  • Publication number: 20070121476
    Abstract: The invention relates to a data-recording device comprising conductive microtips and to the production method thereof. According to the invention, the microtip comprises one end which is intended to be brought into electrical contact with a recording medium. Moreover, the microtip comprises a longitudinal conducting core having an essentially constant cross-section. In addition, the microtip is surrounded by a sheath of non-conducting material, such that the free ends of the core and the sheath are level at the end of the microtip. The cross-section of the sheath can diminish towards the end of the microtip, e.g. such as to form a truncated-cone-shaped part. The core can comprise a carbon nanotube. Furthermore, a multitude of microtips can be disposed in the form of a network, the ends thereof generating an essentially-flat common surface. The inventive method comprises an abrasion step.
    Type: Application
    Filed: October 26, 2004
    Publication date: May 31, 2007
    Applicant: Commissariat A L'Energie Atomique
    Inventors: Serge Gidon, Yves Samson
  • Publication number: 20070121477
    Abstract: An embodiment of a probe storage device in accord with the present invention can include an actuator for controlling cross-track positioning of a contact probe tip extending from a cantilever. The probe storage device comprises a memory media, a platform, a beam connected with the platform, a cantilever connected with the beam, a tip extending from the cantilever, and an electrostatic actuator including a first electrode disposed on the platform and a second electrode disposed on the beam wherein the electrostatic actuator selectively displaces the tip along an axis formed by the cantilever.
    Type: Application
    Filed: October 26, 2006
    Publication date: May 31, 2007
    Applicant: NANOCHIP, INC.
    Inventors: Nickolai Belov, Zebulah Rapp
  • Publication number: 20070121478
    Abstract: A dual-stack optical data storage medium (10) for write-once recording using a focused radiation beam (9) having a wavelength ? of approximately 655 nm is described. The radiation beam enters through an entrance face (8) of the medium (10) during recording. The medium comprises at least one substrate (1, 7) with present on a side thereof: a first recording stack (6), named L0, comprising a write-once type L0 recording layer, said first recording stack L0 having an optical reflection value RL0 and an optical transmission value TL0, a second recording stack (3), named L1, comprising a write-once type L1 recording layer, said second recording stack L1 having an effective optical reflection value RL1eff. The first recording stack (6) is present at a position closer to the entrance face (8) than the second recording stack. (3). A transparent spacer layer (4) is sandwiched between the recording stacks (3, 6). The reflection values RL0 and RL1eff are within the following ranges: 0.12?RL0?0.18 and 0.12?RL1eff?0.
    Type: Application
    Filed: October 6, 2004
    Publication date: May 31, 2007
    Inventors: Hubert Martens, Benno Tieke, Pierre Woerlee, Ronald Van Den Oetelaar, Wilhelmus Koppers
  • Publication number: 20070121479
    Abstract: User data recording areas and intermediate areas are alternately arranged on a disk. The intermediate area records at least information for synchronization.
    Type: Application
    Filed: January 29, 2007
    Publication date: May 31, 2007
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hideo Ando, Kazuo Watabe, Hiroharu Sato, Toshihiro Sugaya, Chosaku Noda
  • Publication number: 20070121480
    Abstract: A multilayer optical recording medium enabled to retain an ideal signal regenerating property in spite of accidental adhesion of finger mark or alien substance is provided. The multilayer optical recording medium 1 is provided with a plurality of information-recording layers 20, 22, 24, and 26 capable of reading information with a reading light irradiated through a light incidence surface 38A on one side and is so adapted that the light incidence side information-recording layer 26 approximating most closely to the light incidence surface 38A may be set at a small recording capacity as compared with the recording capacities of at least one of the other information-recording layers.
    Type: Application
    Filed: November 27, 2006
    Publication date: May 31, 2007
    Inventors: Koji Mishima, Takashi Kikukawa, Hidetake Itoh, Daisuke Yoshitoku
  • Publication number: 20070121481
    Abstract: An optical disk drive apparatus includes a cylindrical space forming unit that forms a cylindrical space. In the cylindrical space, an optical disk is located such that an upper surface, a lower surface and an edge of an outer circumference of an optical disk face inner surfaces of the cylindrical space forming unit with a predetermined distance.
    Type: Application
    Filed: November 13, 2006
    Publication date: May 31, 2007
    Inventor: Nobuhiko Tsukahara
  • Publication number: 20070121482
    Abstract: A transmitting/receiving apparatus includes a packet construction section for dividing continuous data into a plurality of subpackets, and constructing a packet by concatenating the plurality of subpackets; a modulation transmission section for modulating the constructed packet, and transmitting the modulated packet to another apparatus; a training session execution section for checking channel conditions, when a predetermined condition is satisfied, and changing a modulation rule; and a subpacket transmission confirmation section for confirming whether or not a subpacket included in the transmitted packet is transmitted successfully to the transmission destination apparatus.
    Type: Application
    Filed: November 27, 2006
    Publication date: May 31, 2007
    Inventors: Akio Kurobe, Koji Ikeda, Gou Kuroda, Kensuke Yoshizawa
  • Publication number: 20070121483
    Abstract: The invention provides a system and method for effectively reducing peak-to-average power ratio (PAPR) in an OFDM signal. The method includes the steps of oversampling a signal in the time domain, gradually clipping an amplitude of the signal to a predefined level using a formula involving a hyperbolic tangent, bandpass filtering out-of-band spectral components of the signal due to non-linear clipping to be within a predetermined mask, and transmitting the signal.
    Type: Application
    Filed: November 28, 2005
    Publication date: May 31, 2007
    Inventors: Jinyun Zhang, Xiaozhou Huang
  • Publication number: 20070121484
    Abstract: A method of receiving at least one synchronization signal from at least one base station (BS) in a wireless communication system using an Orthogonal Frequency Division Multiplexing (OFDM) or an OFDM Access (OFDMA) scheme is disclosed. More specifically, the method includes receiving the at least one synchronization signal transmitted from a first cell using a different resource than a resource of a second cell corresponding to the resource of the first cell, wherein the resource is defined by at least one of time period and subcarriers.
    Type: Application
    Filed: November 6, 2006
    Publication date: May 31, 2007
    Inventors: Hak Kim, Bong Kim, Joon Kui Ahn, Dong Seo, Dong Roh, Jung Lee
  • Publication number: 20070121485
    Abstract: A method is disclosed for adjusting a proportional, integral, derivative controller in a limited rotation motor system. The method includes the step of providing a first frequency domain sequence that is representative of a frequency domain representation of a motor control signal responsive to a first digital signal that is representative of the motor control signal. The method also includes the step of providing a second frequency domain sequence that is representative of a frequency domain representation of a position detection signal responsive to a second digital signal that is representative of the position detection signal.
    Type: Application
    Filed: December 5, 2006
    Publication date: May 31, 2007
    Applicant: GSI GROUP CORPORATION
    Inventor: Yuhong Huang
  • Publication number: 20070121486
    Abstract: A novel fast reroute (FRR) technique is provided for quickly and efficiently rerouting selected types of network traffic in response to a node or link failure at the edge of a computer network. According to the technique, the network includes first and second edge devices that function as “FRR mates,” such that network traffic originally destined for one FRR mate may be quickly rerouted to the other without having to wait for conventional network convergence. When an edge device receives rerouted packets originally destined for its FRR mate, the device responds by forwarding only those rerouted packets matching the selected traffic types; rerouted packets that do not match the selected traffic types are dropped or otherwise discarded. The first and second edge devices may be statically configured as FRR mates, e.g., by a network administrator, or they may be configured to automatically detect their compatibility as FRR mates.
    Type: Application
    Filed: November 28, 2005
    Publication date: May 31, 2007
    Inventors: James Guichard, Jean-Philippe Vasseur, Clarence Filsfils, Peter De Vriendt
  • Publication number: 20070121487
    Abstract: A method for recovering circuits of a network element in a communications network includes determining a recovery interval in response to a failure occurring in the network element, and collecting recovery data relating to at least one circuit provisioned in the network element during the recovery interval to support a network service. The recovery data includes identification data and provisioning data. A connection with the network element is established based on the identification data, and the circuit is reprovisioned based on the provisioning data. The method may also include detecting whether an error occurred while reprovisioning the circuit, and logging any detected errors.
    Type: Application
    Filed: November 30, 2005
    Publication date: May 31, 2007
    Applicant: SBC Knowledge Ventures, L.P.
    Inventors: Timothy Klos, John Vallely, Cynthia Green, Randall Leet, Gary Martens, Craig Milloshewski
  • Publication number: 20070121488
    Abstract: A system for implementing service switching includes a primary service processing unit, a physical interface card, a control center, a switching unit and a standby service processing unit, to guarantee that the physical interface card connected to the failed primary service processing unit transmits the service data that should be processed by the primary service processing unit to the standby service processing unit, and to control the control switching unit to transmit the service data that should be transmitted to the primary service processing unit to the standby service processing unit. A method for implementing service switching includes: managing the physical interface card to transmit the service data that should be processed by the primary service processing unit to the standby service processing unit, and managing the switching unit to transmit the service data that should be transmitted to the primary service processing unit to the standby service processing unit.
    Type: Application
    Filed: November 29, 2006
    Publication date: May 31, 2007
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Chaojun Deng, Ziqiang Wang, Jinhua Ye
  • Publication number: 20070121489
    Abstract: A transaction detection device is described having inputs to couple to communication lines. Each communication line to transport notification of a packet observed by a link probe within a computing system containing point-to-point links between nodes. Each of said nodes having at least one processing core. The transaction detection device also comprises logic circuitry to determine from said notifications whether a looked for transaction has occurred within said computing system.
    Type: Application
    Filed: November 21, 2005
    Publication date: May 31, 2007
    Inventors: Robert Roth, Bharadwaj Pudipeddi, Richard Glass, Madhu Athreya
  • Publication number: 20070121490
    Abstract: Each of node servers provided in a cluster system connected to load balancers includes a storage portion for storing node-session information that associates a session ID and a node server in charge with each other and node life/death information, a node checking portion for, when receiving a message sent from any one of the load balancers, judging whether or not a node server in charge of the session of the message is functioning normally, and a node reassigning portion for updating the node-session information so that the node server in charge of the session is changed to an alternative node server and sending data indicating the alternative node server to a load balancer different from the load balancer that has sent the message. This allows the cluster system to process messages from a plurality of load balancers efficiently even when the node server is not functioning normally.
    Type: Application
    Filed: March 29, 2006
    Publication date: May 31, 2007
    Applicant: FUJITSU LIMITED
    Inventors: Akinori Iwakawa, Satoshi Okuyama
  • Publication number: 20070121491
    Abstract: A digital demodulating apparatus is provided capable of more reducing the power consumption of a demodulator by decreasing the performance of demodulation processing to a portion of a signal in which the signal condition is forecasted to be worsened. In the apparatus, when a signal status forecasting section has forecasted that the status of the received signal is worsened to a predetermined status due to a predetermined control of a controller, a demodulation controller controls an operation of at least one of circuit elements constituting the demodulator such that the performance of the operation decreases, in processing the portion where the signal status is worsened.
    Type: Application
    Filed: November 17, 2006
    Publication date: May 31, 2007
    Inventor: Nobuyoshi Kaiki
  • Publication number: 20070121492
    Abstract: A computer implemented method, data processing system, and processor are provided for thermal interrupt generation. An interrupt temperature is set to a first temperature and an interrupt direction is to a greater than or equal to determination. A determination is made as to whether a sensed temperature from a digital thermal sensor meets or exceeds the interrupt temperature in response to the interrupt direction. A first interrupt is generated in response to the sensed temperature meeting or exceeding the interrupt temperature.
    Type: Application
    Filed: June 21, 2006
    Publication date: May 31, 2007
    Inventors: Charles Johns, Michael Wang