Patents Issued in August 7, 2007
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Patent number: 7253813Abstract: An electrooptical apparatus includes a plurality of scanning lines, a plurality of signal lines, and electrooptical devices, each being placed at an intersection of each of the scanning lines and each of the signal lines. The electrooptical apparatus is driven according to the amount of drive current supplied to the electrooptical devices. The electrooptical apparatus includes a brightness detection unit to detect the brightness of the electrooptical devices, and a drive current amount adjusting unit to adjust the amount of drive current based on the detected brightness result obtained by the brightness detection unit in order to correct for the brightness of the electrooptical devices.Type: GrantFiled: January 30, 2003Date of Patent: August 7, 2007Assignee: Seiko Epson CorporationInventor: Tadashi Yamada
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Patent number: 7253814Abstract: Disclosed is an apparatus and method for driving a plurality of displays in a computer system. The apparatus can include a checking circuit for checking inherent control information of the displays, and an output circuit for confirming a brightness control information corresponding to the inherent control information of the checked display among preset brightness control information to output an information to control the display at a brightness of the corresponding display. A conversion circuit can supply an information to drive a corresponding display based on the output information of the output circuit.Type: GrantFiled: July 30, 2003Date of Patent: August 7, 2007Assignee: LG Electronics Inc.Inventors: Se Hwan Kim, Jong Hyun Woo
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Patent number: 7253815Abstract: An active matrix organic light-emitting diode (OLED) display and pixel structure thereof. The pixel structure comprises a first transistor, a storage capacitor, a second transistor, and an OLED. The first transistor has a gate terminal coupled to a scan signal and a drain terminal coupled to a data signal. The storage capacitor has two terminals coupled to a source terminal of the first transistor and a reference node with a second voltage. The second transistor has a gate terminal coupled to the source terminal of the first transistor and a source terminal coupled to the reference node. The OLED has a cathode coupled to a drain terminal of the second transistor and an anode coupled to a first voltage, higher than the second voltage. The second transistor is an amorphous silicon thin film transistor (a-Si TFT), and an equivalent channel width/length (W/L) ratio of the second transistor exceeds 10.Type: GrantFiled: March 10, 2004Date of Patent: August 7, 2007Assignee: AU Optronics Corp.Inventor: Chih-Feng Sung
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Patent number: 7253816Abstract: A computer graphics accelerator apparatus and method determines whether a pixel at predetermined pixel co-ordinates in an area being rasterized is within a triangle defining a sub-area of the area. The coordinate system in relation to which the triangle is defined is translated such that the pixel co-ordinates are disposed at the origin of the coordinate system. Determinants of matrices based on at least two of the coordinate values of at least two of the vertices are calculated and their signs compared. Based on this comparison a determination as to pixel location with respect to the triangle may be made.Type: GrantFiled: March 7, 2003Date of Patent: August 7, 2007Assignee: STMicroelectronics LimitedInventor: Toni Brkic
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Patent number: 7253817Abstract: A virtual human interface for conducting survey questioning comprises a system and method which may include a script file which may include survey question data, response pattern data, expression data, advertising data, entertainment data, lobbying data and/or processing instructions. The expression data may include mouth and eye expression data along with respective duration data indicative of the length of time of respective visual representations. The virtual human interface may interact With a user by representing a character object that personifies communicative behavior to make interaction more natural and enjoyable.Type: GrantFiled: August 20, 2004Date of Patent: August 7, 2007Assignee: Virtual Personalities, Inc.Inventors: Peter M. Plantec, Michael L. Mauldin, Jeremy Shay Romero, Aaron J. McBride
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Patent number: 7253818Abstract: A method and system is provided for organizing and routing multiple memory requests from a plurality of clients to multiple memories. Requests from a plurality of clients, including a plurality of clients of the same type, such as multiple MPEG decoders, are directed to different memory controllers by a router. The memory controllers order the client requests by requests among similar client types. The memory controllers also order the client requests by different client types. The ordered requests are then delivered to memory. Returned data is sent back to the clients. A method of mapping motion pictures experts group (MPEG) video information for improved efficiency is presented, wherein image information is stored in blocks of memory referred to as tiles. Tiles are mapped in memory so that adjacent tiles only correspond to different banks of memory.Type: GrantFiled: August 7, 2001Date of Patent: August 7, 2007Assignee: ATI Technologies, Inc.Inventors: Chun Wang, Youjing Zhang, Richard K. Sita, Glen T. McDonnell, Babs L. Carter
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Patent number: 7253819Abstract: Displays on embedded devices, such as cell phones, personal digital assistants, and game machines, typically have low color-depth resolution displays. The conversion of color image from high color-depth resolution formats, such as 24-bit per pixel color, to lower color-depth resolution formats for display on low color-depth resolution displays, such as those having 15-bit per pixel color, results in degraded image appearance, especially for 24-bit format images having gradual color changes. The present invention manipulates the color information of images or video sequences and improves the appearance of the display by dithering representations of the images in a color space having a luminance coordinate.Type: GrantFiled: April 12, 2005Date of Patent: August 7, 2007Assignee: Majesco Holdings, Inc.Inventor: Alexandre Ganea
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Patent number: 7253820Abstract: A polygon rendering system for receiving geometric data defining a polygon in an image being generated. The polygon rendering system renders the geometric data as pixel data. The pixel data defines pixels used to display the image. The system comprises a first memory buffer for storing the pixel data. It also comprises a second memory buffer for storing additional pixel data used to render edge pixels at a higher resolution than pixels that are not the edge pixels. Edge pixels are pixels that are located on an edge of the polygon in the image. The system also comprises a display controller for outputting the pixel data in the first memory buffer to output circuitry. The polygon rendering system identifies which of the pixels are the edge pixels and the display controller updates contents of the first buffer with data based on contents of the second buffer.Type: GrantFiled: September 14, 2004Date of Patent: August 7, 2007Assignees: Sony Corporation, Sony Electronics, Inc.Inventor: Thomas P. Dawson
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Patent number: 7253821Abstract: A novel special picture effect is to be achieved by a read address control system. To this ends, a special effect device includes an address signal generating unit 3 for generating a readout address signal for picture signals stored in a frame buffer 2 so that such a special effect is achieved in which a picture corresponding to the picture signals stored in said frame buffer is rotationally moved about an optional point, provided to the outer rim of a display area at the time of display, as the center of rotation, so as to disappear to outside the display area.Type: GrantFiled: April 2, 2004Date of Patent: August 7, 2007Assignee: Sony CorporationInventor: Hideyuki Shimizu
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Patent number: 7253822Abstract: A picture displaying apparatus comprises a storing unit storing a plurality of pictures, a displaying unit displaying the picture, an aimed region designating unit designating a partial region on the picture as an aimed region, an image cutting-out unit cutting-out the aimed region from each of the pictures as an aimed region picture, and a display controlling unit displaying the aimed region picture on the displaying unit. The display controlling unit comprises a superposed picture forming unit superposing a plurality of the aimed region pictures to form a superposed picture, and a visual effect controlling unit displaying each of the aimed region pictures forming the superposed picture at a predetermined transparency on the displaying unit. Even when a specific picture is retrieved in a large amount of pictures in the same or almost the same form, visual retrieval is possible readily and certainly without decreasing the retrieval efficiency.Type: GrantFiled: July 21, 2004Date of Patent: August 7, 2007Assignees: Fujitsu Limited, Fujitsu Frontech LimitedInventors: Takayuki Matsui, Yutaka Katsumata, Shinichi Eguchi, Sumiko Tanabe, Yuuji Nomoto
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Patent number: 7253823Abstract: System and methods for providing 1D and 2D connectors in a connected diagram. Routing and layout of connectors is accomplished through a pre-defined set of behaviors and properties on a connector that enable an aesthetic layout. Routing behaviors and visual look of the connectors within a diagram may be included in an XML definition file or controlled by a user. The user may switch between 1D and 2D connectors regardless of a shape of the connector. Padding and offset features are assigned to connectors for aesthetically pleasing presentation of object relations. Text box shapes and placements on or near connectors are aligned with connector type, size, and placement. Images and non-predefined shapes may be used as connectors with behaviors assigned similar to predefined shapes.Type: GrantFiled: March 15, 2005Date of Patent: August 7, 2007Assignee: Microsoft CorporationInventors: Karen K. Wong, David Gerton, Ilan Berker, Ramona Pousti, Matthew J. Kotler
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Patent number: 7253824Abstract: A method and apparatus of providing wave-front color therapy using a computer or portable handheld devices such as PDA's and other portable telecommunication devices to deliver a specific different nanometer wavelength of light to affect a wide variety of visual, binocular, function, perceptual, and cognitive-related vision imbalances that interfere with function and performance. The current proposed device would provide specific treatment for these difficulties by delivering different wavelengths of light through a computer monitor. The exact therapeutic prescription including nanometer specifications and hue-saturation will be prescribed for individuals with a wide range of visual problems caused by a traumatic brain injury, cerebrovascular accident, and Multiple Sclerosis, and the like, to name a few examples. This disclosure claims analog and digital relations of light as it relates to both the spatial and temporal relationship of light.Type: GrantFiled: May 2, 2003Date of Patent: August 7, 2007Inventors: Dara C. Medes, Heather Lyn Medes, William V. Padula
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Patent number: 7253825Abstract: A method and an apparatus for driving an image display device, such as, a plasma display panel, to represent a gradation. The pixels of a panel are classified into a plurality of groups, and one frame period is divided with time into n subfields. An address period and a sustain period are sequentially executed on each of the groups during at least two of the n subfields. While the pixels of one group are undergoing an address period during a subfield, the pixels of the other groups remain idle. While the pixels of one group are undergoing a sustain period, the pixels of groups that have already been addressed also undergo the sustain period. During one subfield, different gradation weights are allocated to the groups. A gradation of visual brightness for each pixel is determined by performing an address period for either all or some of the groups during at least two subfields. The panel driving method for representing gradation is adaptable.Type: GrantFiled: February 5, 2004Date of Patent: August 7, 2007Assignee: Samsung SDI Co., Ltd.Inventors: Jin-Sung Kim, Jin-Boo Son
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Patent number: 7253826Abstract: A thermal development apparatus is provided with: a thermal development section for heating a photosensitive thermal developable recording material to elicit a latent image recorded on an image-forming layer on both faces of the photosensitive thermal developable recording material by a heating unit, a cassette holder section for holding a cassette that houses the photosensitive thermal developable recording material therein, a conveyor unit for taking the photosensitive thermal developable recording material out of the cassette held in the cassette holder section and conveying the photosensitive thermal developable recording material to the thermal development section, and a control unit for controlling at least one of a heating temperature and a conveyance speed in the heating unit in the thermal development section, wherein the control unit is provided with a moisture correction information of the photosensitive thermal developable recording material and the control unit suitably corrects and controls theType: GrantFiled: August 26, 2004Date of Patent: August 7, 2007Assignee: Fujifilm CorporationInventor: Koichi Okada
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Patent number: 7253827Abstract: Disclosed in a multi-beam optical scanning apparatus which includes a light source unit including a plurality of radiation points disposed with being spaced from each other in a main scanning direction, and a deflecting unit for deflecting a plurality of light beams radiated from the light source unit toward a surface to be scanned.Type: GrantFiled: January 26, 2004Date of Patent: August 7, 2007Assignee: Canon Kabushiki KaishaInventor: Keiichiro Ishihara
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Patent number: 7253828Abstract: A method for calibrating a printer including a light-emitting diode (LED) printhead for non-uniformity on an image plane. The LED recording elements are arranged in a plurality of arrays. A plurality of characteristics (102, 104, 106, 108, 110) associated with each recording element are measured and from the measured characteristics a plurality of parameters (112, 114, 116, 118, 120) associated with each recording element is determined. Adjustment factors for a plurality of parameters are combined mathematically to determine an adjusted power density (122) for each recording element on the image plane. Correction factors (130) are then assigned to each recording element to correct for the adjusted power density (122). The correction factors (130) are stored in a memory (132) associated with the LED printhead.Type: GrantFiled: July 30, 2004Date of Patent: August 7, 2007Assignee: Eastman Kodak CompanyInventors: Yee S. Ng, Stacy M. Munechika, Dennis R. Kamp, Lawrence W. Fisher
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Patent number: 7253829Abstract: A print apparatus including a photoconductive drum, a laser scanning unit (LSU) to scan a surface of the photoconductive drum, and an image processing unit to generate and output dot size information corresponding to externally input image data. The dot size information determines sizes of individual dots on an image to be printed, a memory unit to store dot size compensation values related to a scanning distance of laser beams emitted from the LSU to the surface of the photoconductive drum to the LSU. The compensation values change the dot size information. The apparatus further includes a light intensity difference compensation unit to compensate for the dot size information according to the stored compensation values if the dot size information is received, and a pulse width modulation (PWM) unit to generate and output a pulse signal to control the scanning of the laser beams of the LSU according to the compensated dot size information.Type: GrantFiled: October 20, 2004Date of Patent: August 7, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Goo-soo Gahang, Jung-tag Gong, Sang-yun Shin
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Patent number: 7253830Abstract: A rotary apparatus for a polygon mirror has: a sleeve; a rotation shaft which is inserted into the sleeve; the polygon mirror which is fixed to the rotation shaft; a yoke which is fixed to the rotation shaft; permanent magnets which are fixed to the yoke; and a stator which is fixed to the sleeve, and which is opposed to the permanent magnets. Tapped portions are formed in a part of the outer circumference of the rotation shaft, and a part of the inner circumference of the sleeve, respectively. The tapped portions are temporarily engaged with each other in a process of inserting the rotation shaft into the sleeve. The rotation direction of the rotation shaft in a driving process is identical with that of the rotation shaft in the inserting process.Type: GrantFiled: December 23, 2004Date of Patent: August 7, 2007Assignee: Funai Electric Co., Ltd.Inventor: Toshiharu Matsui
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Patent number: 7253831Abstract: There is provided herein a system for video encoding and decoding that uses short-term and long-term buffers. Reconstruction of each block within an image may be performed with reference to one of the buffers, so that different portions of an image, or different images in a sequence, may be reconstructed using different buffers. There is also provided herein systems for signaling, between an encoder and a decoder, the use of the above buffers and related address information. The encoder may, for example, transmit information identifying video data as corresponding to a particular one of the buffers, and the decoder may transmit information relating to the size of the short-term and the long-term buffer. The buffer sizes may be changed during transmission of video data by including buffer allocation information in the video data. Also disclosed herein are methods and apparatuses according to the above.Type: GrantFiled: May 10, 2001Date of Patent: August 7, 2007Assignee: Polycom, Inc.Inventor: Qunshan Gu
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Patent number: 7253832Abstract: A background lighting module illuminates an object from behind by visible light with respect to a photographing module to identify an area including the boundary between the object and the background portion in an image to be photographed by the photographing module. A controller controls a photographing operation including the exposure of the photographing module and the lighting intensity of the background lighting module. An image processing module processes the images photographed by the photographing module. The controller sets the exposure and lighting intensity to specific conditions so as to photograph a processing image where the background portion on the periphery of the object has a higher luminance than that of the silhouette portion of the object. The image processing module extracts the shape of the object by using the luminance difference between the silhouette area of the object and the background area on the periphery of the object.Type: GrantFiled: August 13, 2002Date of Patent: August 7, 2007Assignee: Olympus CorporationInventors: Hidekazu Iwaki, Takashi Miyoshi, Kazuhiko Arai
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Patent number: 7253833Abstract: A vehicle periphery visual recognition system 1 is made up of an image pickup unit 11 for picking up images of image pickup ranges in three directions of the lower area at the front of a vehicle and the left and right side areas at the same time, and a controller 10 for performing image processing of an image signal provided by the image pickup unit 11 and then outputting the signal to a display 15.Type: GrantFiled: November 15, 2002Date of Patent: August 7, 2007Assignees: Autonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.Inventor: Masayoshi Imoto
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Patent number: 7253834Abstract: An image pickup apparatus comprising a first lens unit which comprises at least a negative lens element and at least a positive lens element and has negative refractive power, a second lens unit which has positive refractive power, and an optical path bending reflecting optical element which has a variable reflecting surface disposed in an airspace between a most object side lens component of the first lens unit and a most object side lens component of the second lens unit. This image pickup apparatus changes a magnification by moving the second lens unit along an optical axis and corrects a deviation of an image location by varying a shape of the variable reflecting surface of the reflecting optical element.Type: GrantFiled: March 20, 2002Date of Patent: August 7, 2007Assignee: Olympus CorporationInventors: Shinichi Mihara, Masahito Watanabe, Tomoyuki Satori, Toyoharu Hanzawa, Shigeru Kato
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Patent number: 7253835Abstract: A method, apparatus, and computer program product are presented for estimating a camera reference horizon ?0. Operations include receiving images including projections of objects including horizontal edges. Vertical motion is estimated for the images and is stored. The projection of horizontal edges in the images is computed. The projected edges are segmented out and motion is compensated. Projections of the horizontal edges from image to image are used to generate tracks. Active track storage is maintained by adding data to update the storage from each subsequent image. The tracks are screened using a criteria set to produce a subset of tracks to enhance track reliability. Distances to, and heights of, the objects are then estimated. Further screening is performed by calculating an error criteria for each track and selecting a subset satisfying the error criteria. The remaining tracks are used to generate a camera reference horizon estimate ?0.Type: GrantFiled: December 23, 2002Date of Patent: August 7, 2007Assignee: HRL Laboratories, LLCInventor: Yang Chen
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Patent number: 7253836Abstract: A CCD captures a subject image having passed through a taking lens and an image processing circuit performs various types of image pre-treatment including gamma correction and white balance on image data corresponding to n lines×m rows output by the CCD. The image processing circuit also performs format processing on the data. The data are then compressed at a compression circuit. The white balance adjustment and the like are implemented in line sequence at a line processing circuit which engages in signal processing in pixel sequence in units of individual lines in the output from the CCD. The image data having undergone the pre-treatment are then subjected to format processing prior to JPEG compression, at a block processing circuit that engages in signal processing in units of individual blocks each ranging over an n×m (N>n, M>m) block. In other words, the signal processing is performed in block sequence.Type: GrantFiled: February 4, 2000Date of Patent: August 7, 2007Assignee: Nikon CorporationInventors: Masahiro Suzuki, Michihiro Tamune, Zhe-Hong Chen, Masahiro Juen
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Patent number: 7253837Abstract: An image sensor has an array of pixels read by column circuits to provide reset and read samples on a pair of sample capacitors. To alleviate the effects of parasitic capacitance in the region of the sample capacitors, a modified timing arrangement is used. Both sample switches are operated simultaneously to pre-charge both sample capacitors with a pixel signal value. One sample switch is operated after reset to apply a reset value to one of the pre-charged sample capacitors.Type: GrantFiled: April 4, 2003Date of Patent: August 7, 2007Assignee: STMicroelectronics Ltd.Inventors: Robert Henderson, Jonathan Ephriam David Hurwitz
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Patent number: 7253838Abstract: An imaging device for document imaging may comprise a housing and an optical system having a lens system and an optical detector. The optical system is responsive to image light reflected by an object and produces image data representative of the image light. The optical system is pivotally mounted to said housing and is biased toward a vertical orientation inside said housing by gravity.Type: GrantFiled: June 3, 2003Date of Patent: August 7, 2007Assignee: Hewlett-Packard Development Company, L.P.Inventor: Thomas C Oliver
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Patent number: 7253839Abstract: A photographic lens system for forming an object image is placed in the lens barrel of an electronic camera. In a camera body, a beam splitter for forming branched optical paths and an image sensing element for photoelectrically converting the formed object image are arranged. An optical filter attached to a filter cap is inserted between the beam splitter and the image sensing element. The filter cap intimately contacts with the perimeter of the exit surface of the beam splitter and the perimeter of the image sensing surface of the image sensing element, thereby forming closed spaces, between the optical filter and the beam splitter and between the optical filter and the image sensing element, which allow incident light to pass through.Type: GrantFiled: March 7, 2006Date of Patent: August 7, 2007Assignee: Olympus Optical Co., Ltd.Inventor: Koji Kato
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Patent number: 7253840Abstract: Free setting of the angle or direction of a camera is available while the camera is being inserted into a cradle. A cradle for a digital camera is provided, which is capable of confirming a display screen of the camera, changing the recording medium or battery, or mounting or demounting a communication cable or the like while the camera is being mounted on the cradle without deteriorating the camera holding. The cradle has a structure such that a tripod screw hole is formed on the bottom surface of the cradle, thereby capable of fixing the cradle to a tripod while the digital camera is being inserted into the cradle. By making the height of rubber pads equal or higher than that of a tripod base, the cradle can be stably placed on a desk or the like.Type: GrantFiled: June 11, 2002Date of Patent: August 7, 2007Assignee: Fujifilm CorporationInventor: Yasunobu Kayanuma
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Patent number: 7253841Abstract: A remote control method of tile display is disclosed for a tile display system, which contains a host computer, several projector modules, and a screen. The images produced by the projector modules are simultaneously displayed on the screen as a single image. The remote control method includes the steps of: obtaining setting parameters of each projector using a control program on the host computer via a network; storing the setting parameters of each projector in a storage module of the host computer; simultaneously generating a projector parameter table for each projector; updating the projector parameter table when the parameters of any projector are modified; generating a control message for the corresponding projector according to the new parameter table; transmitting the control message to the corresponding projector via the network; and converting the control message into one recognizable by the projector in order to make corresponding modifications.Type: GrantFiled: April 7, 2004Date of Patent: August 7, 2007Assignees: National Applied Research Laboratories, National Center for High-Performance ComputingInventors: Whey-Fone Tsai, Fang-Pang Lin, Yun-Te Lin, Yu-Chung Chen, Yung-Ching Mai, Shi-Wei Lo, Tai-Hung Chen
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Patent number: 7253842Abstract: To match the output frame rates to the input frame rates, a display clock signal is generated that has a frequency locked to the frequency of a reference clock signal. To generate the display clock signal, the period of the vertical incoming data clock is measured using the reference clock signal. The number of pixels disposed in the output frames is subsequently divided by the measured period. A fractional-N phase-locked loop circuit is adapted to multiply the result of the division with the frequency of the reference clock signal to generate the display clock signal. The display clock signal is also locked to the reference clock signal.Type: GrantFiled: July 14, 2005Date of Patent: August 7, 2007Assignee: Greenforest Consulting, Inc.Inventors: James Y. Louie, Menq Yu Shyu
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Patent number: 7253843Abstract: The present invention relates to a dual mode signal processing apparatus using a picture-in-picture (PIP) window. In particular, the present invention relates to a display apparatus and a function switching apparatus that display two views for DSPs performing different functions in use of a PIP window so that two functions are simultaneously performed.Type: GrantFiled: October 17, 2003Date of Patent: August 7, 2007Assignee: Samsung Electronics Co., Ltd.Inventor: Yong-hyun Lee
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Patent number: 7253844Abstract: A method and an arrangement are disclosed for synchronizing on-screen display functions during analog signal reception in a terminal arrangement that is capable of receiving both digital and analog video signals. There are provided means (312, 313) for generating on-screen display objects. Coupled to said means for generating on-screen display objects, there are synchronization pulse generation means (314) for controlling the generation of on-screen display objects. Comparison means (322) are used for comparing synchronization pulses generated by said synchronization pulse generation means (314) with a synchronization signal obtained (320) from an analog video signal. The result of said comparing as a controlling signal is conveyed (323, 324) to a process (314, 325) of generating said synchronization pulses.Type: GrantFiled: September 10, 2001Date of Patent: August 7, 2007Assignee: Nokia Multimedia Terminals OyInventors: Reino J. Hiltunen, Raimo Santahuhta
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Patent number: 7253845Abstract: A method (400) and a system (100) for providing video signals to video displays includes the steps of receiving at least one input video signal (150), dithering the non-uniformity color correction (445), applying the non-uniformity color correction to the input video signal to generate a color corrected video signal (450), and increasing a frame rate of the color corrected video signal (120). Gamma correction (125) can be applied to the color correction. Generating a dithered non-uniformity color correction can include selecting from a data storage (115) a plurality of RGB correction matrices (300), measuring at least one brightness level of the input video signal, selecting for the picture level correction a first RGB correction matrix if the brightness is within a first range of values (425), a second RGB correction matrix if the brightness is within a second range of values (435), and interpolating (440) the plurality of RGB correction matrices if the brightness is within a third range of values.Type: GrantFiled: May 9, 2002Date of Patent: August 7, 2007Assignee: Thomson LicensingInventors: Mark Francis Rumreich, Daniel Mark Hutchinson, John Alan Hague
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Patent number: 7253846Abstract: This invention relates to liquid crystal display with a touch panel that does not overlap with a display area of liquid crystal panel but is still capable of obtaining a non-touch area.Type: GrantFiled: May 14, 2002Date of Patent: August 7, 2007Assignee: LG.Philips LCD Co., Ltd.Inventors: In Duk Song, Yong Ik Bang
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Patent number: 7253847Abstract: A light adjuster which is free from occurrence of cloudiness, and can maintain sufficient workability to improve the yield. In the light adjuster, transparent electrically conductive films 102a and 102b are provided on respective surfaces of a pair of PET films 103a and 103b, a liquid crystal layer 101 is interposed between the transparent electrically conductive films 102a and 102b, and the force required for stripping the liquid crystal layer 101 from the transparent electrically conductive films 102a and 102b is in a range of 15 to 50 g/cm.Type: GrantFiled: February 3, 2005Date of Patent: August 7, 2007Assignee: Nippon Sheet Glass Company, LimitedInventor: Yuichi Yano
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Patent number: 7253848Abstract: An organic thin film transistor array substrate including a substrate divided into an LCD region and an OTFT region; a first dielectric layer formed on the substrate in the LCD region and having a first uneven portion; an organic semiconducting layer formed on the substrate in the OTFT region; a gate, source, and drain formed in the OTFT region, wherein the source and drain are in contact with the organic semiconducting layer to form a channel between the source and drain; and a pixel electrode formed on the first uneven portion of the first dielectric layer in the LCD region.Type: GrantFiled: June 10, 2003Date of Patent: August 7, 2007Assignee: Industrial Technology Research InstituteInventors: Yih-Jun Wong, Horng-Long Cheng, Yu-Wu Wang
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Patent number: 7253849Abstract: A thin film transistor array panel is provided, which includes: a gate wire formed on an insulating substrate; a data wire formed on the insulating substrate, insulated from the gate wire, and intersecting the gate wire; a storage electrode wire formed on the insulating substrate, insulated from the data wire, and intersecting the data wire; a plurality of pixel electrodes provided on the respective pixel areas defined by the intersections of the gate wire and the data wire, each pixel electrode having a cutout; a plurality of direction control electrodes provided on the respective pixel areas defined by the intersections of the gate wire and the data wire; a plurality of first thin film transistors connected to the gate wire, the data wire, and the pixel electrodes; and a plurality of second thin film transistors connected to the gate wire, the storage electrode wire, and the direction control electrodes.Type: GrantFiled: July 24, 2002Date of Patent: August 7, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Kyoung-Ju Shin, Hee-Seob Kim, Sung-Kyu Hong, Baek-Woon Lee
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Patent number: 7253850Abstract: A liquid crystal display device adopting a storage-on-common method is disclosed to prevent the operation of a unit pixel with a point deficiency, such as a brilliant spot, at its occurrence, thereby preventing degradation of a picture quality caused due to the defective pixel. Because the defective pixel is controlled to turn black by the use of a repair pattern, the picture quality degradation due to the defective pixel is prevented when the liquid crystal display device is driven.Type: GrantFiled: December 10, 2003Date of Patent: August 7, 2007Assignee: LG.Philips LCD Co., Ltd.Inventor: Ki-Sul Cho
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Patent number: 7253851Abstract: A pixel structure and repair method thereof. A through hole is formed in the common line. When the source/drain electrode of a thin film transistor is not electrically connected to a pixel electrode due to a polymer residue remaining in a contact hole, a first laser beam passes through the through hole to weld the source/drain electrode and the pixel electrode. The defective pixel can be thus repaired to display the original color. In addition, if the defective pixel fails due to a defective thin film transistor, the invention irradiates a second laser beam to sever the source/drain electrode such that the defective thin film transistor is not electrically connected to the pixel electrode. The defective pixel can be thus repaired to a dark point.Type: GrantFiled: October 21, 2004Date of Patent: August 7, 2007Assignee: Hannstar Display Corp.Inventors: Seok-Lyul Lee, Tean-Sen Jen, Ming-Tien Lin
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Patent number: 7253852Abstract: A display module includes a display, a first polarizer and a second polarizer. The polarizers can be located at a distance from the image plane of the display to remove the visibility of optical defects located within the polarizer or between the polarizer and display. The display module can also include at least one lens for magnifying the image produced by the display. The display module can also include a backlight having a first polarizer, a second polarizer and a light source.Type: GrantFiled: April 25, 2001Date of Patent: August 7, 2007Assignee: Kopin CorporationInventors: William Roberts, Matthew Zavracky
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Patent number: 7253853Abstract: A lighting unit is incorporated in an LC display. The lighting unit includes a light guide and a light source adjacent to the light guide. The light guide includes a rear surface facing an LC panel, a front surface opposite to the rear surface, a first side surface between the rear and the front surfaces, and a second side surface spaced widthwise from the first side surface. The light from the light source travels into the light guide, and from the first toward the second side surfaces. A reflector for reflecting the light incident on the second side surface toward the first side surface is formed on the second side surface. The front surface of the light guide is formed with first and second slant portions. Each first slant portion reflects the light, traveling from the first toward the second side surfaces, toward the rear surface of the light guide. Each second slant portion reflects the light, traveling from the second toward the first side surfaces, toward the rear surface of the light guide.Type: GrantFiled: December 4, 2002Date of Patent: August 7, 2007Assignee: Rohm Co., Ltd.Inventors: Norihiro Imamura, Minori Koshio
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Patent number: 7253854Abstract: A reflection type semiconductor display device which can make satisfactory display even when external light is not satisfactorily intense is provided. A reflection type semiconductor display device according to the present invention can take in light other than incident light on a liquid crystal panel to be an auxiliary light source using optical fibers, and thus, display of high quality level can be made even indoors or in a place where light is faint. Further, by combining the semiconductor display device with a front light, insufficient amount of light can be supplemented with the front light.Type: GrantFiled: December 12, 2005Date of Patent: August 7, 2007Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Shunpei Yamazaki
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Patent number: 7253855Abstract: A liquid crystal display device includes a first substrate, a second substrate made of plastic and being spaced apart from the first substrate, a thin film transistor on the inner surface of the first substrate, a pixel electrode connected to the thin film transistor, a color filter layer under the pixel electrode, a polarizer on the outer surface of the second substrate, a black matrix on the inner surface of the second substrate and corresponding to the thin film transistor, a common electrode on the black matrix, and a liquid crystal layer between the pixel electrode and the common electrode.Type: GrantFiled: October 17, 2002Date of Patent: August 7, 2007Assignee: LG Philips LCD Co., Ltd.Inventors: Yun-Bok Lee, Jong-Hoon Yi
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Patent number: 7253856Abstract: A liquid crystal display device includes first and second substrates facing and spaced apart from each other, a common electrode on an inner surface of the first substrate, a gate line on an inner surface of the second substrate, a data line crossing the gate line, a switching device connected to the gate and data lines, a first pixel electrode connected to the switching device and spaced apart from the data line, a black matrix covering the data line and having a first portion width extending from a center line of the data line to a first edge of the black matrix, and a second portion width different from the first portion width extending from the center line of the data line to a second edge of the black matrix opposite to the first edge of the black matrix, and a liquid crystal material layer interposed between the first pixel electrode and common electrode.Type: GrantFiled: April 30, 2002Date of Patent: August 7, 2007Assignee: LG.Philips LCD Co., Ltd.Inventors: Gi-Hong Kim, Hyung-Ki Hong
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Patent number: 7253857Abstract: A liquid crystal display device exhibits high reliability and is capable of miniaturization by eliminating a mechanical operating mechanism. At least a light guide plate which guides light from a light source, a liquid crystal display panel, an optical medium which changes over transmission and reflection of light, color filters and a reflector are sequentially arranged from the viewer side. The color of the light from the light source are sequentially changed over to provide three primary colors, and this light passes through the liquid crystal display panel and is reflected toward the viewer side by the optical medium. The color filters are constituted for respective primary colors and are arranged to face at least three pixels which are disposed close to each other. The reflector reflects ambient light which passes through the light guide plate, liquid crystal display panel, optical medium and color filters to the viewer side.Type: GrantFiled: March 19, 2004Date of Patent: August 7, 2007Assignee: Hitachi Displays, Ltd.Inventors: Yoshiaki Nakayoshi, Kazuhiko Yanagawa
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Patent number: 7253858Abstract: A liquid crystal display device includes: first and second substrates facing and spaced apart from each other; a retardation layer on an outer surface of the first substrate; a linear polarizing layer on the retardation layer; a cholesteric liquid crystal color filter (CCF) layer on an inner surface of the second substrate; a liquid crystal layer between the first substrate and the CCF layer; a first cholesteric liquid crystal (CLC) polarizing layer on an outer surface of the second substrate, the first CLC polarizing layer having a first helical pitch of a first circular polarization direction; a second cholesteric liquid crystal (CLC) polarizing layer on the first CLC layer, the second CLC polarizing layer having a second helical pitch of a second circular polarization direction opposite to the first circular polarization direction; and a backlight unit outside the second CLC layer.Type: GrantFiled: July 8, 2003Date of Patent: August 7, 2007Assignee: LG.Philips LCD Co., Ltd.Inventor: Jong-Weon Moon
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Patent number: 7253859Abstract: The present invention provides a retardation element capable of ensuring that, even when the retardation element is incorporated into a display element having pixels, each pixel being a triad of red, green and blue display sections, the display element shows excellent display characteristics. A retardation film includes a glass substrate, and a liquid crystal layer made from a polymerizable liquid crystalline material, formed on an alignment layer that has been formed on top of the glass substrate. The retardation film is for use in a liquid crystal display element having pixels, each pixel being a triad of red, green and blue display sections, and the liquid crystal layer has a plurality of fine areas that have been created, by patterning, correspondingly to the display sections of the pixels in the three colors.Type: GrantFiled: December 11, 2003Date of Patent: August 7, 2007Assignee: Dai Nippon Printing Co., Ltd.Inventor: Koji Ishizaki
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Patent number: 7253860Abstract: A wide viewing angle liquid crystal display comprises a back light unit, an optical compensation circular polarizer unit, a liquid crystal panel and an optical compensation circular analyzer unit. The optical compensation circular polarizer unit is set over the back light unit. The liquid crystal panel is set over the optical compensation circular polarizer unit. The optical compensation circular analyzer unit is set over the liquid crystal panel. The liquid crystal display operates using circularly polarized light to improve uniformity of viewing angle properties and contrast ratio, and prevent gray level inversion due to wide-angle viewing.Type: GrantFiled: April 30, 2004Date of Patent: August 7, 2007Assignee: Au Optronics CorporationInventor: Ting-Jui Chang
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Patent number: 7253861Abstract: On substrates 2a, 2b of a chiral nematic liquid crystal optical element 1, transparent electrodes 3a, 3b and electrical insulation layers 4a, 4b are formed, and further, resin layers 5a, 5b hating a pencil hardness of “B” or less are formed on the electrical insulation layers by a spin coating method so as to be in contact with a liquid crystal layer 7. When the surface hardness of the resin layers is to be measured, a glass substrate on which a resin layer is formed by screen-printing is prepared as a test piece, and the test piece is fitted to a pencil-scratching tester. The surface hardness is measured by scratching the test piece with two kinds of testing pencil selected from testing pencils having 17 grades of density.Type: GrantFiled: December 28, 2001Date of Patent: August 7, 2007Assignee: Asahi Glass CompanyInventors: Satoshi Niiyama, Noriko Suehiro
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Patent number: 7253862Abstract: A slit pattern, which is an orientation control element extending in an oblique direction relative to an edge of a pixel electrode on a surface of a TFT substrate, is formed in the pixel electrode to extend in a substantially parallel direction to an extending direction of a bank-shaped pattern. Furthermore, as an orientation control element, fine slit patterns (concave portions in the pixel electrode) are formed locally in a part near the edge of the pixel electrode except in the pixel electrode to extend in an oblique direction relative to an extending direction of the edge.Type: GrantFiled: January 14, 2002Date of Patent: August 7, 2007Assignee: Sharp Kabushiki KaishaInventors: Arihiro Takeda, Shingo Kataoka, Tsuyoshi Kamada, Kazuya Ueda, Takahiro Sasaki