Abstract: A touch-panel device including a conductive membrane, current measurement resistors which are connected at one end to both ends of the conductive membrane and which are connected at the other end to one another, an oscillator which is connected on one end to the connection point of the current measurement resistors and is connected on its other end to the ground, and a serial connection circuit of a switch and a load impedance which circuit is connected between the ground side of the oscillator and one end of the conductive membrane. The touch-panel device measures voltages V10 and V20 of both resistors and calculates Rk/Ro=V20/(V10−V20) by turning the switch ON. When a touch position is to be measured, substitute Rk/Ro to the equation of RL/Ro=Rk(V2−V1)/R(V1+V2)+V2/(V1+V2) so as to obtain a touch position. Therefore, touch position detection accuracy is improved and the cost is reduced.
Abstract: Between a positive power supply 18 and a negative power supply 19, a p-channel transistor 11 and an n-channel transistor 14 are connected in series while a p-channel transistor 12 and an n-channel transistor 15 are also connected in series. An inverted input signal *Sig1 is input to the respective gates of the transistors 11 and 14, while an input signal Sig1 is input to the respective gates of the transistors 12 and 15. As a result, of a pair of the transistors connected in series, namely either the transistors 11 and 14 or the transistors 12 and 15, when one transistor turns ON, the other transistor turns OFF. Thus, generation of through currents is prevented.
June 14, 2001
Date of Patent:
October 5, 2004
Sanyo Electric Co., Ltd.
Shoichiro Matsumoto, Naoaki Komiya, Masahiro Okuyama, Koji Hirosawa
Abstract: The outputs from a coordinate detector obtained by irradiating a plurality of predetermined positions on a coordinate input screen are stored in correspondence with each position of the coordinate input screen for a projection display section. The position of the coordinate input screen is designated by a switch. On the basis of output information from the coordinate detector, which corresponds to the designated position, the coordinate values of a light spot on the coordinate input screen are calculated by a coordinate calculation section.
Abstract: A photo-addressable type recording display apparatus realizes high sensitivity recording display and realizes recording display with short writing pulse application time. The photo-addressable type recording display apparatus is provided with a recording unit that displays an image, a light writing unit that writes an image in the recording unit by the pattern of light, and a control unit that controls the recording unit and the light writing unit. The recording unit is provided with a spatial light modulation element and a driving unit, and the spatial light modulation element has a memory liquid crystal display element layer and organic photoconductive switching element layer.
Abstract: A column electrode driving circuit for an image display device for selecting, from among a plurality of reference voltage levels, reference voltage levels respectively corresponding to gray scale levels in input data, and outputting the respective selected voltage levels to at least one data line. The input data includes data of a first color, a second color, and a third color. The reference voltage levels are independently selected corresponding to the gray scale levels in the input data of the first, second, and third colors. Among the reference voltage levels independently selected corresponding to a given gray scale level in the input data of the first, second, and third colors, the reference voltage level selected corresponding to at least one color is different from the reference voltage level or levels selected corresponding to the other color or colors, the given gray scale level being within a predetermined range.
Abstract: A pliable electrophoretic display device having a deformation-resistant memory characteristic is provided by covering a plurality of partitioning walls defining display sections containing a dispersion liquid with electrophoretic particle dispersed therein with an expandable ceiling sheet. Such a ceiling sheet is formed by applying a hardenable precursor liquid, which is immiscible with the dispersion liquid, over the partitioning walls containing the dispersion liquid and hardening the precursor liquid in situ by exposure to light, heat or by drying.
Abstract: A method and system for correcting alignment and linearity errors in devices using a finger or stylus input device with a display device interactively coupled to a digitizer is disclosed. Touching intersections in a calibration grid on the display device may be performed to create a linearity map. Subsequently, detected stylus input is mapped to a sector in the linearity map, and resultant screen coordinates are calculated using ratios within a reference rectangle corresponding to the detected stylus input and the mapped sector.
Abstract: An apparatus and method for calibration of each individual driver channel in a multichannel driver circuit for a spatial light modulator used in an image display apparatus. A separate calibration sequence is initiated in which, for each positive and negative half-cycle of the driver circuit, a ramped voltage, applied as the drive circuit voltage (18), is compared against a standard black-video drive voltage. When the ramped voltage equals the standard drive voltage, calibration for this half-cycle is complete and a digital value corresponding to a correction component of the ramped voltage is stored in memory (40). The process is duplicated for each positive and negative half-cycle of the drive voltage signal (18). For gain calibration, a ramped voltage is applied as the drive circuit voltage 18 and compared against a standard white-video signal level.
Abstract: A combination primary mouse controller and child's mouse controller for controlling a computer through a computer port includes a primary mouse controller and a child's mouse controller. The primary mouse controller is shaped for use by an adult user once the primary mouse controller has been operably attached to the computer port. The child's mouse controller is shaped for use by a child user and is capable of operable engagement with the primary mouse controller. The primary mouse controller includes a sensor for sensing insertion of the second connector into the auxiliary port. The primary mouse controller also includes a selector for directing control between the input mechanism and the auxiliary port in response to the sensor such that the input mechanism is operatively connected with the connector until the second connector is inserted into the auxiliary port, upon which the operative connection is switched from the input mechanism to the auxiliary port.
Abstract: Driving apparatus and driving method of liquid crystal display apparatus of the present invention are provided with first and second amplifier circuits in an output circuit, switches a noninverted input signal and an inverted signal, and switches output signals of the respective first and second amplifier circuits so as to output the output signals that have been switched to pixels provided in a matrix manner. The driving apparatus and driving method are further provided with a changeover control circuit that switches the output signals of the first and second amplifier circuits so that an offset voltage applied to a pixel has a polarity that is reversed to a polarity of respective offset voltages applied to its surrounding pixels.
Abstract: An input device includes a pressure-sensitive or capacitive planar input unit with an indicator sheet which has input sections being secured to the surface of the planar input unit. A tactile feedback generator is provided at the back side of the planar input unit. The tactile feedback generator includes dome-shaped inversion plates that are separately provided at locations corresponding to the input sections and provide feedback to the operator. When an input section is pressed, an operation signal in accordance with what is indicated at the pressed input section is generated.
August 3, 2001
Date of Patent:
March 9, 2004
Alps Electric Co., Ltd.
Katsumi Kato, Yasuji Hagiwara, Masahiro Soma, Tadamitsu Sato
Abstract: An electro-optic device comprising a matrix array of an LCD display element, the device having shared-source adjacent transistors in contiguous rows, thereby reducing the capacitive loading on drivers providing voltage signals which modulate the display elements. In addition, a method is provided for utilizing a matrix design that incorporates non-contiguous, multi-row addressing and shared-source transistors. The device and method provide a display device with large pixel count, yet with high display definition and performance.
Abstract: The device has an LCD panel 6, a digital circuit 1 and an analog circuit 2 which generate display signals to be supplied to the LCD panel 6, and has functions of normal mode and stand-by mode in a status where electric power is supplied from a power source 5. In the normal mode, a multivalued display signal which can represent gradation levels is generated and supplied to the LCD panel 6, while in the stand-by mode, a binary display signal which does not represent gradation levels is generated and supplied to the LCD panel 6.
Abstract: A portable computer input device is characterized in having a releasable upper cover, a foldable computer mounting pad, and a signal transmission joint connectable with a flexible printed circuit board to serve conveniently mission of rapid information transmission.
Abstract: A computer mouse device for controlling a cursor displayed on a personal computer. The computer mouse device includes a platform. An outer housing for grasping by a hand of an adult user is mounted on the platform. The outer housing includes a palm portion and a finger portion for resting a palm and fingers of a user thereon. The palm portion and the finger portion are releasably coupled together. A first pair of switches is depressibly mounted on the finger portion for operating the cursor. An inner housing having a second pair of switches depressibly mounted thereon for grasping by a hand of a child user is mounted on the platform. Control circuitry for controlling each of the switches is mounted in the inner housing. A control means for controlling movement of the cursor is mounted on the platform.
Abstract: Cross correlation between a reference image frame and a comparison image frame determine the direction of motion relative to x and y orthogonal axes for a pointing device that uses optical imaging to monitor movement relative to a surface. Pixel data for a portion of the surface are loaded into a buffer memory that shifts the data between successive positions in the buffer memory as each pixel of a comparison frame is processed to compute cross correlation. Auto correlation is determined for positions in the reference frame and used with the cross correlation results to determine a sub-pixel interpolation for the movement of the pointing device. A new reference frame is loaded using data for the comparison frame currently being processed if the pointing device is moved sufficiently so that the next comparison frame will not overlap the existing reference frame.
Abstract: A hand-movement-detecting input device includes a body; and an image-position detecting device located on the body, by which the image-position detecting device detects movement of at least a portion of the user's hand so as to generate a cursor-moving signal or a button-click signal for use by a computer, without the need for physical manipulation of a device such as a mouse or keyboard.
Abstract: A compensation process for improving color saturation and image quality of a plasma display panel (PDP) is provided, wherein a brightness of light generated from each of red, green, and blue discharge cells of each pixel on said PDP is calculated through a numeric operation according to laws of color matching. The process comprises the step of increasing or decreasing the strength of input image signals of each of the red, green, and blue discharge cells in accordance with the calculation result for adjusting brightness of the generated red, green, and blue lights so as to subtract a visible light generated by gas in each of the red, green, and blue discharge cells during gas discharging, thereby eliminating an adverse effect of the visible light on color purity and color temperature of the PDP during gas discharging. This can obtain an image on PDP having an optimum color purity and color temperature and reduce the manufacturing cost.
May 18, 2001
Date of Patent:
October 7, 2003
Chunghwa Picture Tubes, Ltd.
Shiuh-Bin Kao, Yao-Hung Lai, Kuang-Lang Chen, Ching-Hui Lin
Abstract: In an operating unit, push buttons are integrally formed via a connecting section, and the top face of the connecting section abuts the bottom face of a panel. On side-faces of the push buttons, an outwardly protruding flange is integrally formed. The top face of the flange is set to be at a position higher than that of the top face of the connecting section. When one of the push buttons is pressed down, the operating unit is rotated about a point in the inside of another of the push buttons as a fulcrum so as to turn on the output of a switch member. Because the operating unit is rotated about the inside point as the fulcrum, other switch members cannot be switched.
Abstract: Disclosed is a method and an apparatus, as well as a computer program, for associating digitizer tablet stroke samples with entries in an electronic personal information management (PIM) tool, such as an electronic organizer or an electronic calendar. A stroke database has a plurality of time stamped stroke entries, and a PIM database has a plurality of entries each having a time associated therewith. A controller searches at least one of the stroke database and the PIM database to locate corresponding entries in each database that indicate that a particular one of the stroke entries was created at a time that corresponds to a particular one of the PIM database entries. The controller is responsive to the search being successful for forming a link between the stroke entry and the PIM database entry for enabling corresponding stroke information to be visualized in association with the particular one of the PIM database entries.
June 28, 2000
Date of Patent:
March 12, 2002
International Business Machines Corporation
Simon Butcher, John P. Karidis, Sreenivasulu Kesavarapu, Scott Lekuch, Toby Maners, James Randal Moulic, Bengt-Olaf Schneider