Patents Examined by Henry N. Tran
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Patent number: 7522148Abstract: A source driver for driving a source line included in an electro-optical device, includes: an impedance conversion circuit which drives the source line based on a grayscale voltage corresponding to display data; a first switch circuit including one end to which a non-display voltage is supplied and another end coupled to an output of the impedance conversion circuit; a power save data holding circuit provided corresponding to each impedance conversion circuit or to impedance conversion circuits corresponding to a plurality of dots making up a pixel, and for holding power save data; and a first mask circuit for masking the power save data based on a first mask control signal that varies in unit of a horizontal scan period.Type: GrantFiled: September 6, 2005Date of Patent: April 21, 2009Assignee: Seiko Epson CorporationInventor: Katsuhiko Maki
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Patent number: 7511724Abstract: A control of gobos defend by records in the gobo. The gobos are formed by menued shapes.Type: GrantFiled: May 13, 2005Date of Patent: March 31, 2009Assignee: Production Resource Group, LLCInventor: Mark A. Hunt
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Patent number: 7505055Abstract: A method, apparatus, and system for determining a horizontal resolution and a phase of an analog video signal arranged to display a number of scan lines each formed of a number of pixels is described. A number of initialization values are set where at least one of the initialization values is a current horizontal resolution and then a difference value for each immediately adjacent ones of the pixels is determined. Next, an edge flag value based upon the difference value is stored in at least one of a number of accumulators such that when at least one of the accumulators has a stored edge flag value that is substantially greater than those stored edge flag values in the other accumulators, then the horizontal resolution is set to the current resolution.Type: GrantFiled: December 21, 2004Date of Patent: March 17, 2009Assignee: Genesis Microchip Inc.Inventor: Greg Neal
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Patent number: 7489310Abstract: A data line drive circuit is equipped with a single line driver and a gate voltage generation circuit. The single line driver is constructed such that N groups (where N is an integer 2 or larger) of series connections of drive transistors and switching transistors are connected in parallel. The gate voltage generation circuit includes two transistors constituting a current mirror circuit, a drive transistor, and a constant voltage generation transistor. The range of an output current Iout can be controlled by changing any of the design values of the parameters including: relative values Ka and Kb of the gain coefficient for the transistors, the source voltage VDREF of the gate voltage generation circuit, and the gate signal VRIN of the drive transistor.Type: GrantFiled: January 28, 2005Date of Patent: February 10, 2009Assignee: Seiko Epson CorporationInventor: Toshiyuki Kasai
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Patent number: 7489305Abstract: A digital imaging device is provided with a touch sensitive display screen 10. The screen 10 displays an image 12 captured by the imaging device. Along one side of the screen is a toolbar 14 upon which is provided a plurality of individual icons 16. The icons 16 represent particular control functions that may be selected by a user. Examples of such control functions represented by the icons 16 include but are not limited to save, send, retrieve or discard image; rotate, reflect, crop, resize or edit image; compare images; process image (e.g. sharpen, blur, emboss, edge detect, pixelise, apply filter or similar); or vary image properties (e.g. brightness, colour balance, colour depth, contrast, convert to greyscale/black and white, effective surface temperature displayed (for infrared images) or similar). The user can select icons by touching the screen either directly or more preferably by tapping the screen with a suitable implement such as a pen, a stylus or similar.Type: GrantFiled: December 1, 2004Date of Patent: February 10, 2009Assignee: Thermoteknix Systems LimitedInventors: Richard Salisbury, Peter Haigh
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Patent number: 7486279Abstract: A device and system are disclosed. In one embodiment the device comprises a primary display unit, a base unit coupled to the primary display unit, and a touch-sensitive secondary display unit, coupled to the base unit, operable to receive input from a user and display information for the user.Type: GrantFiled: November 30, 2004Date of Patent: February 3, 2009Assignee: Intel CorporationInventors: Hong W. Wong, Wah Yiu Kwong, Hue V. Lam
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Patent number: 7483004Abstract: A pixel, an organic light emitting display including the same, and a driving method thereof, in which a gradation is represented using the frequency characteristic of an organic light emitting diode. The organic light emitting display includes a plurality of pixels which are connected by a plurality of scan lines for supplying scan signals, a plurality of data lines for supplying data signals, and a plurality of power source lines, each pixel having: a frequency supplying line through which a frequency signal corresponding to a sub-frame is supplied; a pixel circuit outputting a current corresponding to an output obtained by applying a logical operation to a corresponding one of the data signals and the frequency signal; and an organic light emitting diode for emitting light based on the current outputted from the pixel circuit.Type: GrantFiled: October 6, 2005Date of Patent: January 27, 2009Assignee: Samsung SDI Co., LtdInventor: Hong Kwon Kim
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Patent number: 7482998Abstract: An LED interface circuit provides connection options for one or more types of LEDs. In an embodiment, the circuit includes an input node that receives an LED control signal, and an output that has a first output node, and a second output node. A driving circuit is disposed between the input header and the output. The driving circuit has a non-inverted input node and an inverted output node. In an embodiment, the inverted output node is capable of sinking current. The non-inverted input node is coupled to the input header and to the first output node, while the inverted output node is coupled to the second output node. The output of the LED interface circuit is capable of driving a plurality of different types of LED displays.Type: GrantFiled: December 1, 2004Date of Patent: January 27, 2009Assignee: Broadcom CorporationInventors: Charles J. Purwin, Chris R. Franklin
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Patent number: 7479947Abstract: A form factor for a portable device is disclosed. A first face of the portable device may house a display screen and three linear input devices (e.g., touch-sensitive strips), one on each of three sides of the display screen, for providing user input. On a second, opposite face of the portable device, is a planar input device (e.g., a touchpad) for providing user input. There may also be a microphone and speaker on the second face of the portable device, with the speaker placed behind the planar input device. Sound output by the speaker passes through holes in the planar input device. In one embodiment, the planar input device is used for scrolling content displayed on the display screen, one of the linear input devices is used for zooming in and out, and the other two linear input devices are used for identifying a location on the display screen. In another embodiment, the planar input device is used to identify a location on the display screen, and two of the linear input devices are used for scrolling.Type: GrantFiled: September 26, 2005Date of Patent: January 20, 2009Assignee: Nokia CorporationInventor: Pekka Juhana Pihlaja
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Patent number: 7477219Abstract: According to one embodiment of the present invention a method of reflecting light is disclosed including providing an element having a surface having an edge on which the element is capable of rolling and selectively reflecting light by rolling the surface such that a reflective element associated with the surface selectively reflects light to a desired location.Type: GrantFiled: May 8, 2006Date of Patent: January 13, 2009Assignee: Texas Instruments IncorporatedInventor: Richard L. Knipe
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Patent number: 7477233Abstract: Described is a system and method in which pen gestures cause a mode to be entered in which a computing device acts as if a modifier key (e.g., Control, Alt, or Shift) was being pressed. This is accomplished by a pen driver sending a modifier key down to the keyboard and mouse input subsystem. Modifier key behavior is thus provided, including at times when a keyboard is not readily available. While in the modifier key mode, additional gestures can be input, including a gesture that results in the computing device acting as if multiple modifier keys are pressed. Also, while in the mode, visual feedback may be provided to indicate the mode is active. The mode may be exited by sending a corresponding modifier key up, and the exit may be triggered in various ways, including by other gestures, mouse or pen events, and certain keyboard input.Type: GrantFiled: March 16, 2005Date of Patent: January 13, 2009Assignee: Microsoft CorporationInventors: Richard J. Duncan, Emily K. Rimas-Ribikauskas, Robert J. Jarrett, Leroy B. Keely, Ernest L. Pennington, II, Shawna J. Davis, Sriram Viji, Thomas P. Russo
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Patent number: 7474300Abstract: In a position detecting apparatus, electric power of a position pointer is turned on only when the position pointer is put within a particular range from a tablet to minimize consumption of a battery disposed in the position pointer. When the position pointer is brought close to the tablet, a control signal transmitted from the tablet is detected by a resonant circuit of the position pointer, and MOSFETs serving as a power switch are turned on by the detected signal. In response, electric power is supplied from a battery via the MOSFETs to circuit elements of the position pointer, and thus an operation of the position pointer starts.Type: GrantFiled: November 12, 2004Date of Patent: January 6, 2009Assignee: Wacom Co., Ltd.Inventors: Yuji Katsurahira, Sadao Yamamoto
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Patent number: 7468710Abstract: A light guiding plate is provided on the obverse side of a display for displaying a display image while varying the display image. Unevenness is formed at a predetermined position at a reverse surface of the light guiding plate. A light emitting element is disposed at the side surface of the light guiding plate in such a manner as to introduce the light to the light guiding plate. Alternatively, an uneven portion in conformity with a pattern of a desired display image may be formed at a reverse surface of the light guiding plate, and a light emitting element is disposed at the side surface of the light guiding plate in such a manner as to introduce the light to the light guiding plate.Type: GrantFiled: June 2, 2004Date of Patent: December 23, 2008Assignee: Rohm Co., Ltd.Inventor: Yasunari Nakaoka
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Patent number: 7466311Abstract: The display matrix section 200 has pixel circuits 210 arranged in the form of a matrix, a plurality of gate lines Y1, Y2 . . . that extend in the row direction, and a plurality of data lines X1, X2 . . . that extend in the column direction. The scan lines are connected to a gate driver 300, and the data lines are connected to a data line driver 400. A pre-charging circuit 600 or additional current generation circuit is installed for each data line as means for accelerating the charging or discharging of the data line. For each data line, charging or discharging is accelerated by pre-charging or current addition prior to the completion of the setting of the light emission level in the corresponding pixel circuit 210.Type: GrantFiled: November 15, 2005Date of Patent: December 16, 2008Assignee: Seiko Epson CorporationInventor: Toshiyuki Kasai
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Patent number: 7460099Abstract: A CMOS logical circuit comprises two electric current paths each of which has circuits consisting of n-type and p-type transistors. In a circuit consisting of n-type or p-type transistors, one electric current path is provided with a circuit having the same construction as that of a circuit having an n-type transistor of a CMOS logical circuit outputting a logical operation result similar to that of this logical circuit, and the other electric current path is provided with a circuit having the same construction as that of a circuit having a p-type transistor of the CMOS logical circuit outputting a logical operation result similar to that of this logical circuit. In another circuit consisting of the other channel type, a gate electrode of the transistor provided on the one electric current path and that of the transistor provided on the other electric current path are connected to drain electrodes of the counterparts.Type: GrantFiled: September 23, 2004Date of Patent: December 2, 2008Assignee: Sharp Kabushiki KaishaInventors: Yasushi Kubota, Hajime Washio, Ichiro Shiraki, Kazuhiro Maeda, Yasuyoshi Kaise
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Patent number: 7453433Abstract: The present invention provides a liquid crystal display controller device and method which provides for a full and/or partial display with good display quality and/or low power consumption based on the scanning period for an active scan line being dependent upon a number of reference clock pulses. Some embodiments of the present invention include one or more of the following features: keeping the frequency substantially constant for different numbers of active scan lines, allowing change of the frequency due to characteristics of the LCD, displaying gradation with near linear effective voltage characteristics, displaying graduation data with lower power, or displaying a partial or full screen in a mobile device, for example, a cell phone.Type: GrantFiled: June 29, 2005Date of Patent: November 18, 2008Assignee: Renesas Technology Corp.Inventors: Yasuyuki Kudo, Tsutomu Furuhashi, Yoshikazu Yokota, Toshimitsu Matsudo, Atsuhiro Higa
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Patent number: 7453475Abstract: Exemplary embodiments of the invention provide an optical display device that modulates light from a light source in two stages through an optical modulator and a luminance adjusting element to expand the luminance dynamic range and the number of the gradation levels of a display image, that allows the picture quality to be enhanced, and that is suitably applied to display an image according to the resolution of the luminance adjusting element having a higher resolution than the optical modulator. Exemplary embodiments provide a projection type display device that converts RGB pixel values in HDR display data into YCbCr pixel values, selects the maximum Ymax from corresponding YCbCr values on a pixel-basis in a color modulation light valve, and calculates average values Cbave and Crave.Type: GrantFiled: March 18, 2005Date of Patent: November 18, 2008Assignee: Seiko Epson CorporationInventors: Takashi Nitta, Junichi Nakamura, Shoichi Uchiyama, Tsunemori Asahi
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Patent number: 7450093Abstract: A light emitting device that achieves long life, and which is capable of performing high duty drive, by suppressing initial light emitting element deterioration is provided. Reverse bias application to an EL element (109) is performed one row at a time by forming a reverse bias electric power source line (112) and a reverse bias TFT (108). Reverse bias application can therefore be performed in synchronous with operations for write-in of an image signal, light emission, erasure, and the like. Reverse bias application therefore becomes possible while maintaining a duty equivalent to that of a conventional driving method.Type: GrantFiled: February 1, 2007Date of Patent: November 11, 2008Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Mitsuaki Osame, Aya Miyazaki, Yoshifumi Tanada, Keisuke Miyagawa, Satoshi Seo, Shunpei Yamazaki
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Patent number: 7446736Abstract: A PDP having a driving circuit that reduces the reset voltage of the PDP driving waveforms to make it possible to use low-voltage elements and to achieve high contrasts is disclosed. Since conventional PDP waveforms require very high reset voltages, it causes a problem of intense background light emissions, low contrasts, use of high-voltage components, and increased circuit costs. According to the driving waveforms of the present invention, relative voltage differences between the address electrode and the X electrode and between the X electrode and the Y electrode are considered to design waveforms of low reset voltages, thereby providing high contrasts and low-cost circuit.Type: GrantFiled: February 25, 2005Date of Patent: November 4, 2008Assignee: Samsung SDI Co., Ltd.Inventors: Jeong-Hyun Seo, Joo-Yul Lee, Tae-Hyun Kim, Hee-Hwan Kim, Min-Sun Yoo
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Patent number: RE40698Abstract: There is provided a hand-held pointing device which fits readily and comfortably in the hand of a user. The pointing device case shape is a pistol grip style designed to be ergonomically correct so that the device may be used for extended periods of time without user fatigue. The operative element in the pointing device is a trackball which, in conjunction with two or more button switches, provides the full functionality of a traditional pointing device such as a mouse. A band or strap may be provided to attach the pointing device to the user's hand such that the fingers of the hand are available for other tasks without the need for setting the pointing device down. The trackball device may be attached to a computer or similar apparatus by a direct connect cable or through a wireless interconnection, typically an RF or IR connection.Type: GrantFiled: November 8, 2006Date of Patent: April 14, 2009Inventor: Terry L Dellinger