Patents Examined by Prabodh Dharia
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Patent number: 7253799Abstract: The backlight for a flat display device including a light source, a light guide plate and a surface hologram is provided. The light guide plate is installed at one side of the light source, and light from the light source travels in the light guide plate while being totally reflected. The surface hologram is formed on at least one surface of the light guide plate. The surface hologram has a pattern of a predetermined grating interval and a predetermined grating depth in order to diffract light at a predetermined angle toward the light guide plate.Type: GrantFiled: June 27, 2002Date of Patent: August 7, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Moon-Gyu Lee, Hwan-Young Choi, Jin-Seung Choi, Jee-Hong Min
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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: 7253802Abstract: An electronic input device has a flexible keyboard for receiving user input and a housing defining a space for accommodating the keyboard. The input device has a compacted state and an extended state. The keyboard adopts a compacted spatial configuration in the compacted state and adopts an extended spatial configuration in the second state. In the compacted state the keyboard is wound on a roll. The input device additionally has a retractable, flexible display having corresponding compacted and extended states so that both the keyboard and the display can be rolled in and out together.Type: GrantFiled: February 10, 2005Date of Patent: August 7, 2007Assignee: Nokia Mobile Phones, Ltd.Inventors: Teppo Hemiä, Jouni Hietamäki, Miikka Merilahti, Mirka Murtoniemi, Juha Nousiainen
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Patent number: 7248246Abstract: A rack mount server or device with an integrated display that has an adjustable viewing angle. An adjustable viewing angle allows rack mount servers and devices to be stacked and still maintain viewability of their display screens.Type: GrantFiled: May 31, 2001Date of Patent: July 24, 2007Assignee: Intel CorporationInventor: Monte J. Rhoads
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Patent number: 7245283Abstract: A liquid crystal display (LCD) source driving circuit having a reduced circuit footprint. A plurality of the LCD source driving circuits are typically disposed along a side of an LCD panel and drives the LCD panel in response to digital image signals, such as color signals R, G, B, and control signals received from a control circuit. Also, the LCD source driving circuit includes a plurality of latch circuits, a plurality of level shifters, a plurality of Positive voltage digital-to-analog decoders, a plurality of Negative voltage digital-to-analog decoders, a plurality of multiplexor (MUX) circuits, and a plurality of amplifiers. Thus, the LCD source driving circuit is capable of selectively latching digital image signals using the latch circuits with MUX circuit functions, thereby reducing the circuit footprint of source vertical channels within the LCD source driving circuit.Type: GrantFiled: February 19, 2004Date of Patent: July 17, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Do-Kyung Kim, Yong-Weon Jeon
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Patent number: 7245289Abstract: A force-applying input device includes a mechanical section including a tilting lever; an operation section mounted to an end of the tilting lever; first and second actuators which apply a force to the operation section through the tilting lever; first and second position sensors which detect operation amount and direction of the tilting lever; and a control section which generates first and second drive signals of the first and second actuators by receiving first and second position signals output from the respective first and second position sensors. Based on the first and second position signals output from the position sensors, the control section computes the first and second drive signals of the first and second actuators in accordance with operation amount and direction of the operation section, and outputs first and second drive powers of the respective first and second actuators from first and second drive circuits.Type: GrantFiled: February 18, 2004Date of Patent: July 17, 2007Assignee: Alps Electric Co., Ltd.Inventors: Ken Matsumoto, Satoshi Hayasaka
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Patent number: 7245291Abstract: A system for Internet appliance data entry and navigation includes a reduced keyset remote control unit transmitting a user input keystroke sequence. An Internet appliance receives and parses the keystroke sequence, placing the parsed data into an input buffer. An Internet appliance browser accesses user interface display screens from remote storage via a communications network. The buffer contents define a window within an accessed display screen. The Internet appliance converts the composite display screen for output to a standard television receiver. A user makes option choices and navigates the user interface display screens by activating hyperlinks within the accessed display screens. A standard telephone keypad arrangement is used to create the keystroke sequence, permitting use of a standard or wireless telephone and a hand-held remote control unit for system input and control. An alternative embodiment permits voice input of text, numbers, special symbols, and shortcuts in many languages.Type: GrantFiled: July 8, 2001Date of Patent: July 17, 2007Inventors: Imran Sharif, Noor A Kadir, Glen Edward Ivey, Noman Waseq, William Knapp, John Bremsteller
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Patent number: 7245281Abstract: A drive circuit device for a display device which drives a plurality of source bus lines provided on a display panel includes a driver unit that receives a clock signal, a data signal and a control signal, sequentially fetches the data signal, and generates drive signals for the source bus lines in accordance to the fetched data signal. The device further includes a gate unit that, after elapse of specified time from the reception of the driver unit, and at a timing when a rear-stage drive circuit device starts receiving, starts outputting of a propagation signal including at least one of the clock signal, data signal and control signal to the rear-stage drive circuit device. Consequently, the power consumption required for supplying these signals and the generated amount of electromagnetic waves resulting from the signal supply can be suppressed.Type: GrantFiled: March 20, 2002Date of Patent: July 17, 2007Assignee: Sharp Kabushiki KaishaInventors: Satoshi Sekido, Yasutake Furukoshi, Syouichi Fukutoku
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Patent number: 7236181Abstract: A color conversion apparatus and a method of color conversion are described for converting a first color in a first color space to a second color in a second color space. The color conversion apparatus includes a plurality of lookup tables storing color mappings relating the first color space to the second color space and a converter using the lookup tables to convert the first color to the second color. The first color space is the sRGB color space and the second color space is a device dependent color space, or vice versa. To reduce the table size, tables having little effect on the second color contain groups of input colors mapping to a same output color and are implemented with a memory having the address inputs connected to the upper most significant bits of an incoming color value. A gamma correction circuit is used to calculate the remaining tables.Type: GrantFiled: August 3, 2003Date of Patent: June 26, 2007Assignee: Realtek Semiconductor Corp.Inventors: Hung-Hui Ho, Jin-Sheng Gong, Issac Chen
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Patent number: 7233323Abstract: A display device having a control circuit for changing a time period of applying a signal voltage to each of the signal lines and a scanning voltage to each of the scanning lines within one vertical scanning period (T). The control circuit controls each of horizontal scanning periods (t1 to tm) in such a manner that the period is gradually increased from the scanning line located close to a vertical driving circuit to the scanning line located remote from the vertical driving circuit. In this way, when writing a signal voltage to a pixel via the signal lines, the target potential is reached at each pixel within the time period of applying the signal voltage.Type: GrantFiled: October 3, 2002Date of Patent: June 19, 2007Assignee: TPO Hong Kong Holding LimitedInventor: Hirofumi Watsuda
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Patent number: 7227515Abstract: A system is disclosed that includes a lens system that directs energy from a scene toward a detector and display unit coupled to the detector. The display unit forms an image using information received from the detector. The detector includes an array of detector elements, each detector element receiving energy from a portion of the scene and converting the received energy into information representative of the received energy. The detector sends the information associated with at least some of the detector elements to the display unit. The system further includes a computer coupled to the sensor. The computer selects the detector elements that should be used to form an image based on vehicle operating conditions and instructs the detector which detector elements should have their associated information provided to the display unit.Type: GrantFiled: May 16, 2005Date of Patent: June 5, 2007Assignee: L-3 Communications CorporationInventor: Alexander L. Kormos
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Patent number: 7227526Abstract: A method of using stereo vision to interface with a computer is provided. The method includes capturing a stereo image, and processing the stereo image to determine position information of an object in the stereo image. The object is controlled by a user. The method also includes communicating the position information to the computer to allow the user to interact with a computer application.Type: GrantFiled: July 23, 2001Date of Patent: June 5, 2007Assignee: GestureTek, Inc.Inventors: Evan Hildreth, Francis MacDougall
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Patent number: 7227543Abstract: With the aim of offering a video display technique by which stable and high contrast video images are reproduced, contrast adjusting circuitry is constructed. The contrast adjusting circuitry detects a maximum picture level (MPL) and an average picture level (APL) of analog-to-digital converted luminance signals for a predetermined period, determines one of the predefined luminance regions within which the MPL falls and one of the predefined luminance regions within which the APL falls, and, based on the thus determined luminance regions of both MPL and APL, carries out a contrast adjustment of video images by changing the gain of luminance signals and color depth correction by changing the gain of color signals.Type: GrantFiled: October 27, 2005Date of Patent: June 5, 2007Assignee: Hitachi, Ltd.Inventors: Hiroshi Aoki, Ryo Hasegawa, Takaaki Matono
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Patent number: 7224349Abstract: The invention efficiently decreases EMI noise occurring with regard to the entirety of an electronic apparatus with a plurality of clocks as references for the operations. The spread spectrum is applied to the clock used by the largest number of ICs, that is, a display clock from among three types of clocks.Type: GrantFiled: June 10, 2003Date of Patent: May 29, 2007Assignee: Seiko Epson CorporationInventor: Michio Irie
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Patent number: 7221343Abstract: There is provided an image display apparatus having light emitting elements in its pixels, producing high resolution, facilitating ? correction, and free from occurrence of pseudo contours. A pixel circuit of the image display apparatus of the present invention with a switch circuit for switching between two states of supply and cutoff of a current to the light emitting element, a preset circuit for presetting the switch circuit at one of the two states independently of an analog display voltage signal, and a reset circuit for reversing the one of the two states of the switch circuit based upon the analog display voltage signal.Type: GrantFiled: May 16, 2003Date of Patent: May 22, 2007Assignee: Hitachi, Ltd.Inventors: Hiroshi Kageyama, Hajime Akimoto
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Patent number: 7221363Abstract: The present invention relates to information display assemblies and various covert displays using the same.Type: GrantFiled: February 10, 2004Date of Patent: May 22, 2007Assignee: Gentex CorporationInventors: John K. Roberts, Frederick T. Bauer, Darin D. Tuttle, Harold C. Ockerse, Robert R. Turnbull, David M. Falb
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Patent number: 7221346Abstract: A driving circuit used in a liquid crystal display device is disclosed which includes a timing controller, a source driver and a low color scale driving circuit. The timing controller outputs a polarity inverting signal, a first digital signal, a second digital signal, a third digital signal and a fourth digital signal. The low color scale driving circuit generates a first analog signal, a second analog signal, a third analog signal and a fourth analog signal according to the digital signals outputted from the timing controller for driving a liquid crystal panel. Through the low color scale driving circuit, power consumption of the liquid crystal display device reduces when operating in the condition of low color scale.Type: GrantFiled: November 13, 2003Date of Patent: May 22, 2007Assignee: Toppoly Optoelectronics Corp.Inventors: Ching-Tung Wang, Jui-Lung Hung
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Patent number: 7215304Abstract: A characteristic of a driving transistor which drives a diode is made to differ in terms of current driving capability from that of a switching transistor. The current driving capability of the driving transistor is made lower than that of the switching transistor.Type: GrantFiled: February 7, 2003Date of Patent: May 8, 2007Assignee: Sanyo Electric Co., Ltd.Inventors: Hiroshi Tsuchiya, Yukihiro Noguchi, Shoichiro Matsumoto
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Patent number: 7205970Abstract: A liquid crystal display and a driving method thereof. The liquid crystal display includes a timing controller, a gate driver, a data driver and a liquid crystal panel. The timing controller stores a plurality of sets of gray level correction values, each set of gray level correction values corresponding to each gray level and generates corrected gray level data in response to input gray level data, the corrected gray level data reflecting the gray level correction values corresponding to the input of gray level data. The brightness of the corrected gray level data is time-averaged to be equal to brightness of the input gray level data.Type: GrantFiled: September 3, 2002Date of Patent: April 17, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Sang-Il Kim, Cheol-Woo Park, Young-Chol Yang
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Patent number: 7199783Abstract: An input apparatus is disclosed having a hand-sensing system, a wake-up detector, and a microcontroller. After a period of inactivity, the apparatus is placed into a sleep mode to conserve power. During the sleep mode, an electrical property that the hand-sensing system presents to the wake-up circuit is measured. If the electrical property exceeds a predetermined level, then the input apparatus is activated. In alternative embodiments, an accelerometer, a pressure switch, or a computer system's response can be used to trigger the activation of the input apparatus.Type: GrantFiled: February 7, 2003Date of Patent: April 3, 2007Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.Inventors: John S. Wenstrand, Bruce Hamilton