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Class 345/53 - Specific waveform (e.g., square waveforms, sinusoidal)


Subclass of Class 345 - Computer graphics processing and selective visual display systems
Definition: Subject matter in which the selective electrical control
No. of patents: 45
Last issue date: 04/15/2008


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NumberTitleIssue Date
7359024Structure of liquid crystal display device for easy assembly and disassembly
A liquid crystal display device includes first and second substrates with a liquid crystal layer therebetween, and a transparent conductor which is formed at a liquid crystal side of at least one of the first and the second substrates. At least a projected portion i...
04/15/2008
7359105Spatial light modulator and a display device
A spatial light modulator comprises: a first substrate (25); a second substrate (26); a layer of electrooptic material disposed between the first substrate and the second substrate. A first electrode arrangement (27) is disposed over the first s...
04/15/2008
7359010Method for producing display device
In a liquid crystal display device, a first substrate includes electrical wirings and a semiconductor integrated circuit which has TFTs and is connected electrically to the electrical wirings, and a second substrate includes a transparent conductive film on a surfac...
04/15/2008
7307599Display apparatus
A display apparatus includes a display unit, a time setting unit, a detection unit and an image changing unit. The display unit is configured to display a color image. The time setting unit is configured to set a time. The time to be set by the time setting unit can...
12/11/2007
7298916Image signal processing apparatus and method
When performing A/D conversion on image signals, when reducing noise that is caused by jitter by adjusting the phase of the sampling clocks, even if the input waveform has considerable waveform distortion such as a triangular wave, it is possible to reliably reduce ...
11/20/2007
7215401Liquid crystal display device
A liquid crystal display has a first substrate formed with a picture character pixel electrode for displaying a picture character represented by a fixed pattern, a second substrate formed with a common electrode opposite to the picture character pixel electrode, and...
05/08/2007
7209133Method and apparatus for asynchronous display of graphic images
A display controller in a computer system controls the asynchronous output of graphics display data in a computer system having at least one fixed resolution flat panel display. Fixed panel displays may have problems displaying non-native resolutions particularly at...
04/24/2007
7193601Active matrix liquid crystal display
An active matrix LCD defines a display signal period and a reset period in each vertical scan period. The display signal period is a period to write and hold display signals in pixels in response to a row select pulse generated from an output pulse of a first shift ...
03/20/2007
7173614Power supply circuit, display driver, and voltage supply method
In the case of supplying voltage to a common electrode which faces a pixel electrode through electro-optical substance while changing the voltage from a first low-potential-side voltage to a first high-potential-side voltage, a second high-potential-side voltage, wh...
02/06/2007
7161572Liquid crystal display device
A liquid crystal display device comprising, a liquid crystal panel having parallel provision of a plurality of common electrodes COM extending in a first direction on one of a pair of substrates with a liquid crystal layer interposed therebetween and parallel provis...
01/09/2007
7119779Display device refresh
Some embodiments provide application, at a beginning of a first display frame, of a first potential to a pixel imaging element, the first potential to reset the pixel imaging element to a reset state, application, during the first display frame, of a second potentia...
10/10/2006
7091755Low voltage input circuit with high voltage tolerance capability
An input circuit includes a first buffer having a first power terminal coupled to a first supply voltage, a second power terminal coupled to ground potential, an input to receive an input signal, and an output to generate a first output signal, a second buffer havin...
08/15/2006
6937212System and method for driving LCD displays
A system and method for driving a liquid crystal display (LCD) having at least one segment. The system includes an LCD driver connected to a segment of the LCD. A processor is connected to the LCD driver. The processor may be selectively configured into any of at le...
08/30/2005
6909428Signal converter device
The present invention provides a device for signal transfer, which outputs a treatment signal relating to a vertical-horizontal composite sync signal of a monitor and an integrated signal of the vertical-horizontal composite sync signal. There is a plurality of logi...
06/21/2005
6903711Method for driving plasma display panel
In a driving method for driving a plasma display panel, achieving improvements on luminous efficiency, brightness and contrast, as well as, low voltage and low power consumption, and also high-speed addressing and sustain therewith, wherein onto a second display ele...
06/07/2005
6771424Head-mounted display device
The present invention is a head-mounted display device comprising a head holding holder that is proximate at least to the two sides of the head and to the front of the head, and a display unit that is deployed on that holder, at a position over either the left or ri...
08/03/2004
6741238Power saving circuit for display panel
A power saving circuit for a liquid crystal panel (LCD) and a plasma display panel (PDP) recovers an energy charged in a panel capacitor through one path of a drive IC driving a scan electrode or data electrode for the PDP, and recovers the energy charged in the pan...
05/25/2004
6693613Asymmetric liquid crystal actuation system and method
A liquid crystal display (LCD) system, comprising a matrix of pixels, actuates each pixel by applying positive and negative voltage differences across a liquid crystal layer. The liquid crystal layer is parallel to a transparent cover. The transparent cov...
02/17/2004
6683587Switched mode digital logic method, system and apparatus for directly driving LCD glass
A digital circuit having a plurality of digital outputs coupled to backplane(s) and segments of a LCD glass in combination with a software program functions as a "switched mode" LCD driver. Alternating in polarity but equal in magnitude RMS voltage pulses...
01/27/2004
6661415Liquid crystal driver and optical head for tilt correction
Tilt which is inclination of a normal of optical disk relative to optical axis of optical head is corrected with a liquid crystal element. In a driver for the liquid crystal element, a periodic waveform generator generates periodic waveform and an inverti...
12/09/2003
6636208LCD drive circuit
The liquid crystal driving circuit device has AC generating means (50) for generating an alternating current component of a drive signal, a capacitive element (3) with one terminal connected with said AC generating means, current limitation means (2) with...
10/21/2003
6556515Watch with liquid crystal display panel
A liquid crystal display panel (10) in a watchcase (41) displays time information and/or calendar information. In the liquid crystal display panel (10), a liquid crystal layer (3) is disposed between an upper substrate (1) and a lower substrate (2). On th...
04/29/2003
6542150Method and apparatus for asynchronous display of graphic images
A display controller in a computer system controls the asynchronous output of graphics display data in a computer system having at least one fixed resolution flat panel display. Fixed panel displays may have problems displaying non-native resolutions part...
04/01/2003
6345174Display apparatus for a vehicle audio system
A display panel includes a plurality of alphanumeric segment display elements. A display control circuit controls a plurality of the alphanumeric segment display elements in accordance with either of frequency data or equalizing characteristic data suppli...
02/05/2002
6204831Liquid crystal display driver
A liquid crystal display driver has a system of driving a plurality of segments with 1/n duty binary voltages. In the system, one frame period has the following three sub-periods; the first sub-period, where the line sequential driving is performed, the s...
03/20/2001
6201517Stereoscopic image display apparatus
A display apparatus displays an image based on image data and distance data concerning each pixel. The display apparatus has a detector, a display data generator. The detector detects a visual range from a viewer's eye to the viewer's point of regard. The...
03/13/2001
6031510Microcontroller with LCD control over updating of RAM-stored data determines LCD pixel activation
Method and apparatus for controlling the updating of a random access memory (RAM) that stores data for coding the activation of segments of one or more alphanmeric characters of a liquid crystal display (LCD), to maintain substantially a direct current (D...
02/29/2000
5949388Head-mounted video display
A display body (1) is capable of being mounted via a support frame (3) having band pieces (2) on the head of a doctor, for instance a surgeon. The display body (1) has cylindrical grips (4) projecting from its opposite sides. The grips (4) are attached to...
09/07/1999
5754152Drive method and drive unit for a liquid crystal display device reducing variation of applied voltage dependent upon display patterns
A drive method and a drive unit for a liquid crystal display unit which reduce the variation in the effective value of an applied voltage dependent upon the display patterns, are inexpensive, and enhance the display quality are provided. There is provided...
05/19/1998
5726674Phase modulation technique for driving RMS responding liquid crystal displays
A passive matrix liquid crystal display and a method of driving the same are provided. A desired RMS voltage to be achieved during a first frame is determined for each pixel element of the display. A modulation coefficient is determined for each pixel ele...
03/10/1998
5471255Bias drive and noise reduction in image projectors
Improved bias drive and noise reduction techniques for use with and image projector, such as a liquid crystal light valve image projector. A bias drive circuit produces a square wave-like signal to drive the liquid crystal light valve, for example, with a...
11/28/1995
5381254Method for driving optical modulation device
A method for driving an optical modulation device having a group of scanning electrodes and a group of signal electrodes arranged so that picture elements are defined at the intersections therebetween and a bistable optical modulation material assuming on...
01/10/1995
5043710Key making use of the properties of a liquid crystal
A touch sensor comprises a liquid crystal cell (10) and detector means (40, 50A, 50B) responsive to a change in the dielectric constant of the liquid crystal. The detector means comprise an HF electrical signal generator (40) together with integration mea...
08/27/1991
4955696Liquid crystal driving system
A liquid crystal driving system using a dynamic driving method, which includes circuits for driving liquid crystals by applying AC-converted signals containing a specific frequency which is higher than the frame-frequency and different from the duty facto...
09/11/1990
4547773Character display panels and panel devices
A multi-character multi-segment electrically addressable display panel. Character segments are defined at each of a number of adjacent locations by the overlap of two sets of electrodes. The electrodes of one set are each associated with a location and a ...
10/15/1985
4527863Electronic displays
A polar co-ordinate display of full 360° arc comprised of electrode bearing substrates each side of a layer of dyed phase change liquid crystal material. One set of electrodes comprises concentric spirals, the other set comprises radials. The display is ...
07/09/1985
4465999Matrix driving method for electro-optical display device
A method of cyclically driving an electro-optical display device having a matrix array of a plurality of row electrodes and a plurality of column electrodes, wherein said column electrodes intersect with said row electrodes to provide a plurality of displ...
08/14/1984
4385292Segmented type liquid crystal display and driving method thereof
A system is disclosed for driving a segmented type liquid crystal display comprising a thin film transistor (TFT) array including a plurality of TFTs each having a gate line, a source line, and a drain line, a pair of substrates with one carrying the thin...
05/24/1983
4286266Display device
In a liquid crystal display device which upon controlling with direct voltage shows a memory effect that can be erased by alternating voltage, the written area can expand beyond the edge of the electrode so that edge zones can no longer be erased readily....
08/25/1981
4277786Multi-electrode liquid crystal displays
Liquid crystal displays having indicia-forming electrodes arranged in four parallel planes, with all coplanar electrodes in each plane electrically isolated from each other and from the electrodes in the remaining planes and individually energizable for d...
07/07/1981
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