Patents Examined by Hoa T. Nguyen
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Patent number: 8289247Abstract: A display device and a method of driving the same are provided. The display device includes a plurality of display pixels, a plurality of data lines that are connected to the display pixels, and a plurality of sensing lines that are connected to the display pixels. Each display pixel includes: a driving transistor that has a control terminal, an input terminal, and an output terminal; a capacitor that is connected to the control terminal of the driving transistor; a first switching transistor that is connected to the data line and the control terminal of the driving transistor; a light-emitting element that receives a driving current from the driving transistor to emit light; a second switching transistor that is connected between the sensing line and the light-emitting element; and a third switching transistor that is connected between the output terminal of the driving transistor and the light-emitting element.Type: GrantFiled: March 11, 2009Date of Patent: October 16, 2012Assignees: Samsung Display Co., Ltd., Industry-University Cooperation Foundation Hanyang UniversityInventors: Ung-Gyu Min, Oh-Kyong Kwon
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Patent number: 8279551Abstract: Drive waveforms with which extension and contraction characteristics of an actuator corresponding to a number of track eccentricity amounts are stored as data. By reading servo information written in a disk is obtained as a signal indicating a head displacement amount from a track. The head is moved in a direction in which the track is displaced by obtaining an amplitude corresponding to a slip amount of the head position and a rotation angle of maximum eccentricity, reading drive waveforms which is optimal in driving the actuator from the memory and driving the actuator with a drive waveform matched with the rotation angle at which the eccentricity is maximum.Type: GrantFiled: February 22, 2010Date of Patent: October 2, 2012Assignee: Hitachi High-Technologies CorporationInventors: Kunihito Higa, Yoshihiro Sakurai, Yukio Yamamoto
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Patent number: 8279212Abstract: An organic light emitting display includes a first power block for receiving a first input voltage to output a first output voltage and configured to be driven in a normal operation mode corresponding to an enable signal, a second power block for receiving a second input voltage to output a second output voltage and configured to be driven in an alternate operation mode corresponding to the enable signal, and a voltage input unit for transmitting the first input voltage to the first power block in the normal operation mode, and for transmitting the second input voltage to the second power block and stopping the transmitting of the first input voltage to the first power block in the alternate operation mode, corresponding to the enable signal.Type: GrantFiled: December 14, 2009Date of Patent: October 2, 2012Assignee: Samsung Display Co., Ltd.Inventor: Min-Cheol Kim
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Patent number: 8264922Abstract: There is provided an optical disc drive, which includes a light source emitting a light beam, a beam dividing element that divides the light beam into main and sub-beams, an objective lens, an astigmatism producing unit that gives astigmatism to the main and sub-beams, a signal generation unit that has sensors for the beams and generates a focus error signal based on output signals of the sensors; and an optical element that has a function of adjusting intensity distribution of the main beam such that the main beam incident on the optical disc has a predetermined intensity distribution where a maximum intensity level is positioned at a predetermined height within a range of 70% of a pupil diameter, the predetermined height is not equal to an optical axis, and an intensity of the main beam decreases gradually from the predetermined height to a peripheral portion of the pupil.Type: GrantFiled: April 5, 2007Date of Patent: September 11, 2012Assignee: Hoya CorporationInventor: Shuichi Takeuchi
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Patent number: 8259407Abstract: A system for controlling a rotational speed of a platter in a storage device. The system includes a mode selection module configured to select a mode operation for the storage device, in which the mode of operation includes at least i) a read/write mode in which data is to be read from or written to the platter, ii) a standby mode during in which data is not to be read from or written to the platter, or iii) a shutdown mode. The system further includes a speed control module configured to control the rotational speed of the platter based on the selected mode of operation for the storage device.Type: GrantFiled: July 25, 2011Date of Patent: September 4, 2012Assignee: Marvell International Ltd.Inventors: Edy Susanto, Foo Leng Leong, Cheng Yong Teoh
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Patent number: 8259557Abstract: By avoiding the problem that in a hybrid optical disc, an optical pickup suitable for a standard-density recording area cannot operate as desired in a high-density recording area, damage to the disc drive or optical disc is prevented and optimal control is enabled. Access operation identification information such as reproducing identification information indicating whether or not information recorded in the user data area of the optical disc can be reproduced under the reproducing conditions of the optical disc driving apparatus is recorded in the lead-in area. The optical disc driving apparatus reads this type of access operation identification information, compares it with access operation identification information possessed by the optical disc driving apparatus, and if they do not correspond, does not carry out access operations by the optical head to the user data area, because reproducing or recording compatibility with the optical disc is lacking.Type: GrantFiled: January 7, 2005Date of Patent: September 4, 2012Assignee: Mitsubishi Electric CorporationInventors: Noboru Yashima, Naoki Kizu, Mitsuru Ishizuka, Satoshi Michihata, Yoshihiro Kiyose, Osamu Tsukahara, Masaharu Ogawa
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Patent number: 8254219Abstract: An objective lens actuator includes a plurality of objective lenses, a first lens holder on which the plurality of objective lenses are mounted, and a drive mechanism that drives the first lens holder. At least one of the plurality of objective lenses is mounted on the first lens holder while being held by the second lens holder. Formed on the second lens holder are a slide part which slides the second lens holder with respect to the first lens holder at a time of assembly, and a projection arranged outward of the slide part and protruding toward the first lens holder with the second lens holder being mounted on the first lens holder. The lens holder has a groove formed therein where the projection is securely adhered.Type: GrantFiled: January 22, 2008Date of Patent: August 28, 2012Assignee: Funai Electric Co., Ltd.Inventors: Sotaro Hayashi, Ryozo Hosoda
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Patent number: 8254051Abstract: A disk drive. The disk drive includes a disk, a head, a head-slider, a moving mechanism, and a controller. The head is configured to access the disk. The head-slider includes the head, and is configured to fly in proximity to a recording surface of the disk. The moving mechanism is configured to move the head-slider over the disk, and to support the head-slider. The controller is configured to read out at least one from a plurality of clearance-measurement data strings from the recording surface of the disk using the head, and to calculate a clearance between the head and the disk from clearance-measurement results obtained from a plurality of resolutions with different frequency components.Type: GrantFiled: July 8, 2010Date of Patent: August 28, 2012Assignee: Hitachi Global Storage Technologies, Netherlands B.V.Inventor: Kenichi Kuramoto
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Patent number: 8253714Abstract: An optical touch screen apparatus and method for manufacturing an optical touch screen apparatus are disclosed. The optical touch screen apparatus may comprise a touch screen plate having at least one pair of grooves formed on a front surface thereof; at least one pair of circuit boards disposed on the front surface of the touch screen plate, wherein each of the grooves respectively partially receives each of the circuit boards; an infrared emitting device for emitting an infrared beam, wherein the infrared emitting device is mounted on the first of the circuit boards; and an infrared receiving device for receiving the infrared beam, wherein the infrared receiving device is mounted on the second of the circuit boards and in optical communication with the infrared emitting device.Type: GrantFiled: November 14, 2008Date of Patent: August 28, 2012Assignee: International Business Machines CorporationInventors: Hawaii WY Xuan, Edward YS Lee, Robert David Parsons
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Patent number: 8248900Abstract: An optical disc apparatus can highly accurately record a hologram representing information on or reproduce such a hologram from an optical disc. When recording information on an optical disc 100, the optical disc apparatus controls the position of an objective lens OL1 according to the outcome of detection of a red reflected light beam Lr2 so as to make the focus Fr thereof follow a target track and it also makes the focus Fb1 of a blue light beam Lb1 agree with a target mark position by the objective lens OL1 and also the focus Fb2 agree with the target mark position by controlling the position of another objective lens OL2 according to the outcome of detection of the blue light beam Lb1 by way of the objective lenses OL1 and OL2 so as to make the focus Fb1 of the blue light beam Lb1 and the focus Fb2 of the blue light beam Lb2 agree with the target mark position and the blue light beam Lb1 and the blue light beam Lb2 interfere with each other.Type: GrantFiled: September 13, 2007Date of Patent: August 21, 2012Assignee: Sony CorporationInventors: Kimihiro Saito, Toshihiro Horigome, Takao Kondo, Kunihiko Hayashi, Seiji Kobayashi, Takashi Iwamura, Sakuya Tamada
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Patent number: 8237678Abstract: To provide an information processing apparatus and information processing method capable of correcting a contact or proximity position to be closer to a user-intended contact or proximity position with high accuracy. It includes a calculation unit 163 that 3-value processes the proximity value to detect a first region and a second region depending on the 3-value processed proximity value and then calculates positions of respective centroids of the first region and the second region to calculate a direction of a straight line connecting the respective centroids, a calculation unit 162 calculating a contact or proximity position between the operation object and the surface of the display unit based on the proximity value, and a calculation unit 165 calculating a pointed position different from the contact or proximity position based on the contact or proximity position and the direction of the straight line connecting the first centroid and the second centroid.Type: GrantFiled: August 28, 2009Date of Patent: August 7, 2012Assignee: Sony CorporationInventor: Tomoya Narita
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Patent number: 8233374Abstract: In a multi-layer optical disc, having three (3) or more recording layers thereof, for enabling an easy focus lead-in operation onto a desired recording layer, reflectivity of respective recording layers are so determined that a ratio between the reflectivity of the desired recording layer and the reflectivity of other recording layers is equal or greater than a predetermined value, upon basis of the reflectivity of the other recording layers.Type: GrantFiled: May 15, 2008Date of Patent: July 31, 2012Assignees: Hitachi Consumer Electronics Co., Ltd., TDK CorporationInventors: Yoshinori Ishikawa, Koji Mishima, Tsutomu Aoyama, Takashi Kikukawa
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Patent number: 8233229Abstract: Various systems and methods for reducing cross coupling in proximate signals are disclosed. As one example, a system for reducing cross-coupling in adjacent signals that includes an active slew rate limiter circuit is disclosed. The active slew rate limiter circuit is operable to receive an input signal, and to provide an output signal based on the input signal with a controlled slew rate. In some cases, such systems may be included within a storage device that includes a read head. In such cases, the systems may operate to assure a substantially constant power dissipation within the read head.Type: GrantFiled: February 16, 2006Date of Patent: July 31, 2012Assignee: Agere Systems Inc.Inventors: Robert J. Wimmer, Ram S. Narayan, Jaydip Bhaumik, Michael J. Peterson, David W. Kelly
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Patent number: 8223601Abstract: An address-accessing device includes first and second information generators for producing first and second information according to the received address signals; a phase offset detector for producing a phase offset according to the first and second information; a reference signal generator for producing a reference signal according to the phase offset, the first information and the second information; and a decoder used to determine the structure type of an address-in-pregroove unit (ADIP) according to the reference value. This address-accessing device is capable of adjusting the decision level and the phase offset automatically to lower the error rate occurring in the address access procedure.Type: GrantFiled: September 23, 2011Date of Patent: July 17, 2012Assignee: Mediatek IncorporationInventors: Pi-Hai Liu, Chun-Nan Chen
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Patent number: 8218406Abstract: A lens driving apparatus that can be installed in an optical unit. The lens driving apparatus includes a lead screw rotated by rotation of a motor, a lens holder movable reciprocally along a rotation axis line of the lead screw by rotation of the lead screw, a guide shaft extending in parallel with the rotation axis line. The guide shaft passes through the lens holder to guide movement of a lens held at a free end of the lens holder in a cantilevered state.Type: GrantFiled: May 19, 2009Date of Patent: July 10, 2012Assignee: Nidec Copal CorporationInventors: Haruki Oe, Toru Ishimasa, Yoji Fujimura, Kenichi Watabe
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Patent number: 8207919Abstract: A method for adjusting white balance includes generating a first matrix according to values in axes of a color gamut corresponding to optical characteristics of a plurality of first LEDs; generating a second matrix according to values in the axes of the color gamut corresponding to optical characteristics of the plurality of first LEDs while in white balance; generating a third matrix according to values in the axes of the color gamut corresponding to optical characteristics of a plurality of second LEDs; storing the first matrix, second matrix, and third matrix; generating a calibration matrix by multiplying the second matrix with an inverse of the first matrix; generating a fourth matrix by multiplying the third matrix with the calibration matrix. As a result, the optical characteristics of the plurality of second LEDs can be effectively and rapidly adjusted simply referring to the differences between the second and fourth matrices.Type: GrantFiled: January 23, 2009Date of Patent: June 26, 2012Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Qi-Ming Lu, Chih-Sheng Chou, Hung-Hsiang Chen
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Patent number: 8203927Abstract: An information recording medium (100) is provided with: a data recording area (105, 115) to which one attribute, which corresponds to recorded data, of a plurality of types of attributes is given in each of segmentized area units; and an address recording area (1031, 1032) to record therein an address (AD0-1, AD1-1) of an edge portion on an outermost side of a recording area, which is a continuous recording area to which a data area attribute of the plurality of types of attributes is given and which is a recording area closest to an edge portion on an innermost side of said data recording area, the data area attribute indicating a status that user data is recorded as the data.Type: GrantFiled: December 20, 2006Date of Patent: June 19, 2012Assignee: Pioneer CorporationInventors: Takeshi Koda, Keiji Katata, Masahiro Kato, Masayoshi Yoshida, Masahiro Miura, Eiji Muramatsu, Shoji Taniguchi
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Patent number: 8194519Abstract: A content transmitting apparatus and the like which execute copy control of content more securely than conventional, and can count copy number correctly according to the situation, even in the case where content transfer is interrupted are provided. The content reproducing apparatus 10 for transmitting content that is digital copyrighted work including a plurality of content blocks comprises: the content reproducing unit 11 which reads out content and the like from the DVD 30; the control unit 12 which repeats, for each of the plurality of content blocks, transmitting in parallel with the content blocks, the copy control information indicating copy permission of the content, the content identification information identifying content, and the content status information indicating status of the content blocks in the overall content; the data building unit 15; the transmission unit 16; and the like.Type: GrantFiled: February 28, 2005Date of Patent: June 5, 2012Assignee: Panasonic CorporationInventor: Naoki Ejima
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Patent number: 8194060Abstract: A display system includes a display device, a driving circuit, a flexible printed circuit (FPC), and a charge pump circuit. The driving circuit is disposed on the display device for driving the display device. The FPC is externally coupled to the display device. The charge pump circuit is disposed on the FPC for generating at least an output voltage to the driving circuit according to an input voltage. The charge pump circuit has at least one control line coupled to the driving circuit for receiving a control signal generated from the driving circuit, and the charge pump circuit sets a pumping factor according to the control signal.Type: GrantFiled: February 12, 2009Date of Patent: June 5, 2012Assignee: Himax Technologies LimitedInventors: Hsien-Ting Huang, Yaw-Guang Chang
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Patent number: 8184506Abstract: A near-field optical head has a slider with first and second inclined surfaces that confront a magnetic recording medium during recording and reproduction of information. A recording element is formed on one of the first and second inclined surfaces and includes main and auxiliary magnetic poles stacked together with an insulation film interposed therebetween. An optical flux introducing device introduces an optical flux toward the first and second inclined surfaces of the slider, the optical flux having an optical axis inclined relative to the first and second inclined surfaces. A metal film is formed on the other of the first and second inclined surfaces of the slider for propagating the introduced optical flux along an interface between the first and second inclined surfaces to generate near-field light that is irradiated on the surface of the magnetic recording medium to effect recording and reproduction of information.Type: GrantFiled: March 13, 2008Date of Patent: May 22, 2012Assignee: Seiko Instruments Inc.Inventors: Masakazu Hirata, Manabu Oumi, Majung Park