Patents Issued in March 6, 2003
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Publication number: 20030043064Abstract: In a signal detecting method of repeating the processes of initiating accumulation of charge signals by switching an integrating amplifier to an accumulator mode, retaining a first electric signal outputted from the integrating amplifier immediately after switching to the accumulator mode, finding a difference as a signal component between a second electric signal outputted from the integrating amplifier immediately before switching to a reset mode after completing accumulation of the charge signals and the first electric signal, and converting and outputting the signal component into a digital signal. Here, the signal component concerning a first charge signal is retained by second signal retaining means and then converted into the digital signal. Further, the integrating amplifier is switched to the accumulator mode after completing accumulation concerning the first charge signal but before completing conversion into the digital signal to initiate accumulation concerning a second charge signal.Type: ApplicationFiled: August 29, 2002Publication date: March 6, 2003Applicant: FUJI PHOTO FILM CO., LTDInventor: Takao Kuwabara
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Publication number: 20030043065Abstract: A flash analog-to-digital converter having precise differential voltage interpolation without the use of silicide-blocked resistors. A reference conversion voltage output portion converts an analog input voltage on the basis of a plurality of reference voltages into a plurality of reference conversion voltages. An intermediate voltage generating portion includes a predetermined number of non-linear resistance units respectively provided between one voltage and the other voltage in pairs of a predetermined number of the plurality of reference conversion voltages to generate a plurality of intermediate voltages by resistance division using the predetermined number of non-linear resistance units. In addition, the intermediate voltage generating portion generates a plurality of conversion voltages. A digital data output portion outputs the digital output voltage on the basis of the plurality of conversion voltages using double interpolation.Type: ApplicationFiled: December 20, 2001Publication date: March 6, 2003Inventors: Heng-Chih Lin, Baher S. Haroun
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Publication number: 20030043066Abstract: An AD converter which uses no buffer for receiving the input signals or uses the buffer having relaxed requirements concerning the range of input signals and the output impedance. Voltages at the connection points of a resistor ladder in which a plurality of resistor elements are connected in series, are compared with a reference voltage by a plurality of voltage comparators, a first current circuit is provided on the high potential side of the resistor ladder, a second current circuit is provided on the low potential side thereof, and analog input voltages are fed by providing an input terminal at any place of the resistor ladder except both ends thereof.Type: ApplicationFiled: May 23, 2002Publication date: March 6, 2003Applicant: Hitachi, Ltd.Inventors: Masanori Otsuka, Kazuo Yamakido, Etsuji Yamamoto, Shinya Sano
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Publication number: 20030043067Abstract: Methods and systems consistent with this invention identify a buried object using array-based ground penetrating radar having a control device, a plurality of transmit antennas, and a plurality of receive antennas. Such methods and systems receive a transmit timing input signal and a receive timing input signal. Such methods and systems comprise a first delay circuit for receiving the transmit timing input signal and generating a number of intermediate transmit timing signals delayed with respect to each other by a delay time, and transmit output switch circuit to select either the transmit timing input signal or a corresponding one of the intermediate transmit timing signals as a corresponding output transmit timing signal.Type: ApplicationFiled: February 22, 2002Publication date: March 6, 2003Inventors: Bernth Johansson, Alan J. Witten, Anthony J. Devaney
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Publication number: 20030043068Abstract: The invention relates to a beam forming network of an active antenna with deployable sub-arrays. According to the invention, the network receives information on deformation of the relative position of two panels. Establishing the coherence of the signals takes account of this information to restore the received signals. The invention also provides a spacecraft including the above kind of network and further provides a beam forming method. The invention also provides a system including a craft of the above kind and at least one beacon transmitter station.Type: ApplicationFiled: August 1, 2002Publication date: March 6, 2003Applicant: ALCATELInventors: Jean-Didier Gayrard, Laurent Martin, Gerard Caille
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Publication number: 20030043069Abstract: A cellular phone receives a position measurement result, which indicates a position of the cellular phone determined based on both GPS satellite information and CDMA base station information, from a location information server. Then, when a value indicated by uncertainty information of the position measurement result is greater than a first threshold value, the cellular phone receives another position measurement result, which indicates the position of the cellular phone determined based only on the CDMA base station information, from the location information server and displays it on a display device.Type: ApplicationFiled: August 26, 2002Publication date: March 6, 2003Applicant: DENSO CORPORATIONInventors: Michio Shamoto, Hiroyasu Ogino, Kyoji Oda, Toshihiro Takeuchi, Atsushi Hayashida, Tatsuya Shintai
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Publication number: 20030043070Abstract: The disclosed system manages information that is received from one or more users over a communication network. A user provides information to the network using a network node, such as a data acquisition device that is a wireless, mobile communication device. The system monitors the user's location within a communication environment and sends an alarm to a user when the user is near a location that satisfies user-specified criteria. The system stores the user-provided information at a central database that is linked to the communication network. When an authorized user revises the information, any other authorized user can access the revised information by accessing the central database through a node of the communication network.Type: ApplicationFiled: November 5, 2001Publication date: March 6, 2003Inventor: Samir S. Soliman
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Publication number: 20030043071Abstract: An antenna system includes a beamformer having a feed port and a one-dimensional or two-dimensional arrangement of output ports, radiating antenna elements coupled with output ports of the beamformer, and an antenna control unit coupled with the beamformer to steer a beam of the antenna system. The antenna system forms an electrically steerable, phased array antenna having a beam steering angle which is constant over a very broad band of frequencies. Specific applications for the antenna system include satellite communications including tracking low earth orbiting satellites, radar systems and data links using a steerable antenna for self-installation, self-healing and adaptation.Type: ApplicationFiled: August 27, 2001Publication date: March 6, 2003Applicant: e-tenna CorporationInventors: James D. Lilly, William E. McKinzie
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Publication number: 20030043072Abstract: The location of a cellular telephone handset relative to the sites of two pairs of fixed cellular transceivers is determined by responding to the phase difference of radio waves the handset emits, as coupled to the sites. The phase difference is detected by supplying replicas of the waves received at the first and second sites to first and second electro-acoustical transducers at opposite ends of a Bragg cell. One Bragg cell is thus associated with each pair of cellular transceivers. A laser beam incident on each Bragg cell is deflected by a moving optical grating resulting from the interaction of acoustic waves applied by the electro-acoustical transducers to the particular Bragg cell. The laser beam deflection angle for each Bragg cell determines the relative phase angle of the acoustic waves in that cell.Type: ApplicationFiled: August 30, 2001Publication date: March 6, 2003Inventor: David T. Carrott
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Publication number: 20030043073Abstract: A system and method for performing real-time position detection and motion tracking of mobile communications devices moving about in a defined space comprised of a plurality of locales is provided. A plurality of access points are disposed about the space to provide an interface between mobile devices and a network having functionality and data available or accessible therefrom. Knowledge of adjacency of locales may be used to better determine the location of the mobile device as it transitions between locales and feedback may be provided to monitor the status and configuration of the access points.Type: ApplicationFiled: September 5, 2002Publication date: March 6, 2003Inventors: Matthew K. Gray, Jeffrey J. Peden, Yonald Chery
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Publication number: 20030043074Abstract: A patch antenna is disclosed having four ports for circular polarization that suppress the TM-02 mode, resulting in a radiation pattern that is symmetric. The axial ratio performance is consequently superior to that of two-port patch antennas. A four-port patch antenna includes a patch made of an electrically conductive material, a patch substrate coupled to the patch wherein the patch substrate is made of a dielectric material, a ground plane coupled to the patch substrate wherein the ground plane is made of an electrically conductive material having at least four slots formed therein, a feed substrate coupled to the ground plane wherein the feed substrate is made of a dielectric material, and a hybrid network coupled to the feed substrate that includes a right hand circularly polarized port, a left hand circularly polarized port, and two matched terminated ports.Type: ApplicationFiled: August 22, 2001Publication date: March 6, 2003Inventors: Arun Bhattacharyya, Alan Cha, James McKay
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Publication number: 20030043075Abstract: Antenna systems (200, 1300, 1500, 1900, 2000, 2400) comprise a dielectric resonator antenna (210) in the shape of a parallelepiped with right angle corners. The thickness (T) of the dielectric resonator antenna (210) is chosen to be less than the length and height. The antenna systems (200, 1300, 1500, 1900, 2000, 2400) provide have broad band response that is attributed to two or more resonant modes that have center frequencies that are closely spaced in frequency relative to their bandwidths. Additional pass bands can be obtained by placing a conductive strip (1302) along an edge of the dielectric resonator 210. The passband associated with the conductive strip (1302) can be lowered in frequency by capacitively loading the conductive strip (1302). An additional passband can also be obtained by coupling a metal ribbon (2012) to a feed in microstrip (206, 2002) and to the dielectric resonator antenna (210).Type: ApplicationFiled: August 27, 2001Publication date: March 6, 2003Inventors: Giorgi Bit-Babik, Carlo Di Nallo, Antonio Faraone, Quirino Balzano, Revaz Zaridze
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Publication number: 20030043076Abstract: An antenna system can generate RF radiation fields having dual simultaneous polarization states and having substantially rotationally symmetric radiation patterns. The antenna system generates RF radiation patterns where the beamwidths of respective RF fields for respective radiating elements are substantially equal and are relatively large despite the compact, physical size of the antenna system. The antenna system can include one or more patch radiators and a non-resonant patch separated from each other by an air dielectric and by relatively small spacer elements. The patch radiators and non-resonant patch can have predefined shapes for increasing polarization discrimination. The lower patch radiators can be mounted to a printed circuit board that can include an RF feed network and a ground plane which defines a plurality of symmetrically, shaped slots. The slots within the ground plane of the printed circuit board can be excited by stubs that are part of the feed network of the printed circuit board.Type: ApplicationFiled: August 20, 2002Publication date: March 6, 2003Applicant: EMS Technologies, Inc.Inventors: James C. Carson, Sara Phillips
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Publication number: 20030043077Abstract: A magnetic interface generator generates a magnetic interface at a center frequency f0. The magnetic interface generator is a passive array of spirals that are deposited on a substrate surface. The magnetic interface is generated in a plane at a distance Z above the surface of the substrate. The distance Z where the magnetic interface is created is determined by the cell size of the spiral array, where the cell size is based on the spiral arm length and the spacing S between the spirals. The center frequency of the magnetic interface is determined by the average track length DAV of the spirals in the spiral array. In embodiments, the spiral array is one sub-layer in a multi-layer substrate. The spacing S of the spiral array is chosen to project the magnetic interface to another layer in the multi-layer substrate so as to improve performance of a circuit in the plane of the magnetic interface.Type: ApplicationFiled: August 23, 2002Publication date: March 6, 2003Applicant: Broadcom CorporationInventors: Nicolaos G. Alexopoulos, Harry Contopanagos, Chryssoula Kyriazidou
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Publication number: 20030043078Abstract: An antenna module includes a circuit board, a differential-type amplifier, and a dipole antenna. The dipole antenna can be formed with two electrodes disposed on the circuit board. With the structure of the antenna module, a transmitting antenna can be designed by coupling the two electrodes of the dipole antenna to output terminals of the differential-type amplifier so as to transmit signals. In design of a receiving antenna, the two electrodes of the dipole antenna can be coupled to input terminals of the differential-type amplifier so as to receive signals. Further, if the main function chip has built-in differential power amplifier or differential low noise amplifier, a circuit module for wireless signal transmitting and receiving can be formed by directly coupling the dipole antenna to the differential power amplifier or the differential low noise amplifier.Type: ApplicationFiled: August 23, 2002Publication date: March 6, 2003Inventors: Ten-Long Deng, H. M. Tsai
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Publication number: 20030043079Abstract: A multi-frequency hidden antenna for mobile phones, the electric circuit board of the antenna has on the front side thereof two separated grounding areas and an electric supplying line of a single-pole antenna of ¼ &lgr;, the open circuit end of the electric supplying line is in the shape of an inverted triangle in a way to form a loaded coplanar waveguide antenna. The electric circuit board is further provided on the rear side thereof with a grounding area, while the electric supplying line on the front side thereof is provided with a short circuit portion of which harmonic oscillation frequency is adjustable in order to form a planar inverted F-antenna (PIFA) to be used together with said coplanar waveguide antenna. Thereby a multi-frequency hidden antenna is formed which can improve bandwidth, radiation efficiency and gain during making coplanar of and miniaturizing the hidden antenna.Type: ApplicationFiled: August 29, 2001Publication date: March 6, 2003Applicant: Auden Techno Corp.Inventor: I-Fong Chen
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Publication number: 20030043080Abstract: An antenna 10a equipped on a mobile communication device 1 includes a helical antenna 12 protruding from a casing 2 (key side casing portion 4) of the mobile communication device 1 and a cap 13 covering a surface of the helical antenna 12 and is constructed such that degradation of antenna gain of the helical antenna 12 due to contact of a finger 100 with the helical antenna is prevented by increasing a distance between an outer peripheral surface of the cap 13 and a surface of the helical antenna 12 to at least 1.00 mm by increasing a wall thickness of the cap 13.Type: ApplicationFiled: August 15, 2002Publication date: March 6, 2003Inventors: Tetsuya Saito, Keiji Ogawa
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Publication number: 20030043081Abstract: A printed circuit board (4) is described for surface mounting of electrical and/or electronic components, in particular an SMD (surface mounted device) antenna with a ceramic substrate (1) and at least one resonant track structure (20; 30), and such an antenna for single and multiband applications, in particular in the high-frequency and microwave range. Since one end of the track structure (20) of the antenna is connected to the ground metallization (41), a relatively large bandwidth is achieved with small dimensions of the antenna plus the possibility of smaller board design.Type: ApplicationFiled: September 4, 2002Publication date: March 6, 2003Inventor: Hilgers Achim
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Publication number: 20030043082Abstract: A vehicular glass antenna wherein the antenna is formed of transparent material and is mounted at a front windshield glass where receptive performance of broadcasting signals is best without obstructing a driver's view.Type: ApplicationFiled: April 24, 2002Publication date: March 6, 2003Inventor: Kyu-Sang Ro
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Publication number: 20030043083Abstract: A slot antenna (1) for an electronic device includes an antenna body (10) with a slot (11) defined therein and a coaxial feeder cable (2) electrically connected to the antenna body. The antenna body has variously shaped notches and holes cut near the slot for improving operating characteristics of the slot antenna.Type: ApplicationFiled: October 25, 2001Publication date: March 6, 2003Inventor: Chien Shun Huang
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Publication number: 20030043084Abstract: To make improvements in a conventional slotted bow tie antenna to make it possible to (a) broaden the tuning frequency band, (b) function as a dual band antenna, without diminishing the “advantage of enabling a thin shape and possessing directivity”. When the symmetrical axis in the longitudinal direction of the bow tie shaped slot is set as x, and the symmetrical axis perpendicular thereto is set as y, a narrow and long parasitic element is placed over and across in the y axis direction, and this parasitic element is insulated electrically from a metal foil provided with a slot, using an insulator, for example. Further, by using two parasitic elements and arranging them in parallel while electrically insulating them from each other, the antenna can also function as a dual band antenna.Type: ApplicationFiled: August 30, 2002Publication date: March 6, 2003Inventor: Yoshimi Egashira
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Publication number: 20030043085Abstract: A dielectric covered continuous slot (DCCS) antenna operable at RF frequencies. The antenna includes a conical or cylindrical dielectric radome structure having a nominal thickness equal to one quarter wavelength at a frequency of operation of the antenna. A conductive layer is defined on a contour surface of the radome structure, with a plurality of continuous slots defined in the conductive layer. The slots extend circumferentially about the longitudinal axis of the antenna and are spaced apart in a longitudinal sense. A serpentine end-fed signal transmission structure is disposed within the radome structure for carrying RF feed signals from an excitation end of the structure to a second end of the transmission structure.Type: ApplicationFiled: April 3, 2002Publication date: March 6, 2003Inventors: Pyong K. Park, Ralston S. Robertson
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Publication number: 20030043086Abstract: Disclosed is an antenna system including a Luneberg Lens having a spherically shaped outer surface and a spherically shaped focal surface spaced from its outer surface with a plurality of patch antenna elements disposed along the focal surface of the Lungberg Lens; and a power combiner for combining signals received by said plurality of patch antenna elements. The disclosed antenna system may be used a part of a robust GPS system having a plurality of GPS satellites each transmitting a GPS signal; a plurality of airborne GPS platforms, each GPS platform including a GPS transmitter for transmitting its own GPS signal, the GPS signals being transmitted from the plurality of airborne GPS platforms being differentiated from the GPS signals transmitted by visible GPS satellites; and at least one terrestrially located GPS receiver for receiving the GPS signals transmitted by visible ones of the GPS satellites and by visible ones of said airborne GPS platforms.Type: ApplicationFiled: May 23, 2002Publication date: March 6, 2003Applicant: HRL LABORATORIES, LLCInventors: James H. Schaffner, Jonathan J. Lynch, Daniel F. Sievenpiper
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Publication number: 20030043087Abstract: A monitor or display screen is disclosed, the display screen including a central screen with a width and lateral sides. A first lateral screen is pivotally attached to one of the lateral sides of the central screen. A second lateral screen is pivotally attached to the other of the lateral sides of the central screen. First and second screens are of substantially the same width as central screen. The pivotal attachment of the first and second screens may include an arc-shaped support structure that is hingedly attached at one end to the central screen. The support structure defines a plurality of slots therein and the structure is attached to the first or second screens with a plurality of bolts that engage in the slots. The bolts are adapted to slide in the slots thereby allowing for adjustment of the first and second screens relative to the central screen. First and second screens may be folded one-on-top-of-the-other over the central screen so that a compact unit is formed.Type: ApplicationFiled: August 28, 2002Publication date: March 6, 2003Inventor: Hyun Dae Kim
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Publication number: 20030043088Abstract: An organic light emitting device display may be compensated for color variations between sub-pixels of the same expressed color. This may be done initially upon manufacture of the display and may be continued and updated in the course of the display's lifetime to compensate for differential effects of aging on different expressed sub-pixels. In accordance with one embodiment of the present invention, the display may be driven to achieve a color gamut that substantially all of the pixels are capable of achieving.Type: ApplicationFiled: August 31, 2001Publication date: March 6, 2003Inventors: Lawrence A. Booth, Robert F. Kwasnick
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Publication number: 20030043089Abstract: An imaging system features high speed digitization of pixel signals by utilizing top and bottom digitization circuits which pipeline sample-and-hold operations with analog-to-digital conversion. In operation, while one digitization circuit is performing a sample-and-hold operation, the other digitization circuit is performing analog-to-digital conversion. The speed of the imaging system may be further increased by pipelining and interleaving operations within the top and bottom digitization circuits by using additional sets of sample-and-hold circuits and analog-to-digital converters.Type: ApplicationFiled: August 16, 2002Publication date: March 6, 2003Inventors: Eric Hanson, Alexander Krymski, Konstantin Postnikov
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Publication number: 20030043090Abstract: In an apparatus for driving a luminescent display panel, in a state in which scanning lines are sequentially scanned to drive and illuminate light-emitting elements, a voltage peak value arising in a scanning line in a non-scanning state is held by a capacitor through parasitic capacitance of the light-emitting element in a non-scanning state. On the basis of the voltage value held by the capacitor, a reverse bias voltage to be output from a reverse bias voltage generation circuit is controlled, and the voltage is supplied to the scanning lines.Type: ApplicationFiled: August 5, 2002Publication date: March 6, 2003Applicant: TOHOKU PIONEER CORPORATIONInventors: Naoki Yazawa, Koji Henmi, Gen Suzuki, Keisuke Moriya, Takeshi Okuyama
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Publication number: 20030043091Abstract: A display system includes a light guide plate for transmitting light therethrough, and a panel portion arranged opposite to a back of said light guide plate. The panel portion includes a driving portion provided with actuators of the number corresponding to that of a number of pixels. The panel portion causes a video image to be displayed on the light guide plate according to an inputted image signal, by introducing light into the light guide plate and controlling displacement operations in contact and separation directions of the actuators with respect to the light guide plate according to properties of the image signal, and thereby controlling leakage light in a predetermined region of the light guide plate. The display system further includes a cooling device for controlling flow of a fluid in contact with the back of the light guide plate, to cool the light guide plate from its backside.Type: ApplicationFiled: September 4, 2002Publication date: March 6, 2003Applicant: NGK Insulators, Ltd.Inventors: Yukihisa Takeuchi, Tsutomu Nanataki, Iwao Ohwada, Isao Shikata, Kei Sato
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Publication number: 20030043092Abstract: An image display medium (1) has a structure, where a film body (2) having a number of fine film pieces (2a) provided corresponding to display pixels is held between a supporting member (3) and a covering member (4). The supporting member (3) is provided a number of movable spaces (5) provided to individually move the fine film pieces (2a) of the film body (2). Further, on the film body (2), selective switching is made between a state where each fine film piece (2a) is adsorbed and held on the covering member (4) to shut out a light, and a state where each fine film piece (2a) is adsorbed and held on a spacing wall (5a) of the supporting member (3) to transmit a light, so that an image is displayed.Type: ApplicationFiled: August 15, 2002Publication date: March 6, 2003Inventor: Koichi Uchiyama
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Publication number: 20030043093Abstract: A method for operating a display having a plurality of pixel elements includes applying a transition voltage to the plurality of pixel elements, applying a first paint voltage to one pixel element of the plurality pixel elements, waiting a predetermined time period, illuminating the one pixel element, applying the transition voltage to the plurality of pixel elements, applying a second paint voltage to the one pixel element elements, waiting the predetermined time period, and illuminating the one pixel element. The transition voltage is different from the first paint voltage applied to the one pixel element.Type: ApplicationFiled: January 10, 2000Publication date: March 6, 2003Inventors: MICHAEL BOLOTSKI, HUFFMAN DAVID
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Publication number: 20030043094Abstract: A computer display apparatus is provided, and more particularly, a display apparatus having a graphic card is provided. The computer display apparatus includes an image signal receiving apparatus for receiving graphic information generated in an advanced graphic port (AGP) of a computer system; a graphic card for processing graphic information input through the image signal receiving apparatus and generating an image signal; and a display unit for displaying the image signal generated in the graphic card. As described above, the display apparatus according to the present invention has a graphic card and an image signal receiving apparatus which receives graphic information generated in the AGP port of the computer system, and therefore the resolution of a displayed image can be adjusted in the display apparatus itself.Type: ApplicationFiled: April 2, 2001Publication date: March 6, 2003Inventors: Hyun-kuk Shin, Jong-bae Kim
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Publication number: 20030043095Abstract: An electronic book for presenting text and/or graphics includes a scanner for scanning data cards bearing a pattern encoding the text and/or graphics. The electronic book further includes a programmed processor for decoding the text and/or graphics and a screen for displaying same. In a preferred embodiment the electronic book is provided in a compact foldable housing with an appearance similar to a conventional book including a flexible and foldable screen. The housing includes a spine having a recess to allow the folded screen to loop without damage occurring due to creasing.Type: ApplicationFiled: August 31, 2001Publication date: March 6, 2003Inventor: Kia Silverbrook
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Publication number: 20030043096Abstract: An improved liquid crystal display (LCD) system that includes a user-selectable method for reducing the amount of electrical power consumed by the LCD. When a power-conservation mode is selected, power-conservation circuitry acts upon the pixel activation sequence as normally determined by the LCD driver. To minimize power consumption, a subset of the pixels otherwise to be activated are sent no power. The subset of no-power pixels may be a fixed percentage, such as fifty percent, or may vary according to the image being displayed. In either case, the pixel elements of the no-power subset may be alternated so as to minimize the impact of the power-conservation feature on the displayed image.Type: ApplicationFiled: August 31, 2001Publication date: March 6, 2003Inventor: Anders Fahnoe Heie
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Publication number: 20030043097Abstract: A liquid crystal display device having superior moving-image display characteristics are provided. In the liquid crystal display device, the timing of application of grayscale voltage to liquid crystal cells at the top end of its screen with respect to the timing of application of grayscale voltage to liquid crystal cells in the center of the screen and the timing of application of grayscale voltage to liquid crystal cells at the bottom end of the screen with respect to the timing of application of grayscale voltage to the liquid crystal cells in the center of the screen are made approximately coincident with each other or are deviated from each other by approximately one scanning-line selection period, and a liquid crystal panel is illuminated by a backlight which is intermittently lit in synchronism with vertical synchronizing signals.Type: ApplicationFiled: May 15, 2002Publication date: March 6, 2003Applicant: Hitachi, Ltd.Inventors: Akira Shingai, Junichi Hirakata
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Publication number: 20030043098Abstract: A liquid crystal display apparatus including: a first substrate; a second substrate arranged opposite the first substrate; and a liquid crystal layer held between the first substrate and the second substrate; further provided with a plurality of scanning lines arranged over the first substrate; signal lines arranged over the first substrate to cross the scanning lines; pixels each composed matching an area surrounded by the scanning lines and the signal lines; pixel electrodes arranged over the first substrate and matching the signal lines; and common electrodes arranged over the first substrate and matching the pixel electrodes, wherein at least either of the first substrate and the second substrate is provided with unevenness to vary the thickness of the liquid crystal layer in the light-transmissive regions of the same ones of the pixels.Type: ApplicationFiled: May 21, 2002Publication date: March 6, 2003Inventors: Tetsuya Aoyama, Kenji Okishiro, Katsumi Kondou, Tsunenori Yamamoto, Shinichi Komura
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Publication number: 20030043099Abstract: A multiplex driving method is provided for a liquid crystal cell device having a liquid crystal layer disposed between a pair of substrates, a plurality of row electrodes arranged on one of the substrates and a plurality of column electrodes arranged on the other substrate. The method comprises the steps of sequentially selecting a group of the plurality of row electrodes during a selection period, simultaneously selecting the row electrodes comprising the group, and dividing and separating the selection period into a plurality of intervals within one frame period.Type: ApplicationFiled: June 7, 2002Publication date: March 6, 2003Inventors: Akihiko Ito, Shoichi Iino
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Publication number: 20030043100Abstract: A liquid crystal display (LCD) is provided. A display region formed on an array panel has a plurality of gate lines and a plurality of data lines arranged in rows and columns, respectively. A data driving unit has a plurality of first data driving integrated circuits (ICs) and a plurality of second data driving ICs located proximal to the first data driving ICs, the plurality of first data driving ICs providing first data signals to a corresponding plurality of first data lines and the plurality of second data driving ICs providing second data signals to a corresponding plurality of second data lines. A gate driving unit has a plurality of gate driving ICs for providing scanning signals to the plurality of gate lines.Type: ApplicationFiled: August 14, 2002Publication date: March 6, 2003Applicant: Samsung Electronics Co., Ltd.Inventor: Seung-Hwan Moon
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Publication number: 20030043101Abstract: A method of matrix-driving liquid crystal which exhibits a cholesteric phase and a liquid crystal display apparatus which is driven by the method. The method comprises a reset step Trs, a selection step Ts, an evolution step Trt and a display step Ti, and the selection step comprises a selection pulse application step Tsp, and a pre-selection step Tsz and a post-selection step Tsz′ respectively before and after the selection pulse application step Tsp. The ratio of the length of the selection pulse application step Tsp to the length of the selection step Ts is changed with changes in temperature, and thereby, the temperature dependency of the responsibility of liquid crystal is compensated.Type: ApplicationFiled: September 13, 2002Publication date: March 6, 2003Inventors: Naoki Masazumi, Shuji Yoneda
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Publication number: 20030043102Abstract: A display device for displaying images based on signals of different standards is disclosed.Type: ApplicationFiled: October 21, 2002Publication date: March 6, 2003Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Jun Koyama, Yutaka Shionoiri
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Publication number: 20030043103Abstract: In a liquid crystal display device that uses a liquid crystal material having spontaneous polarization and is actively driven by a TFT, a voltage corresponding to image data is applied twice by driving the TFT of each pixel electrode on a line by line basis of a liquid crystal panel, during writing in one frame. During erasure in one frame, voltage application to liquid crystal by batch selection of all the pixel electrodes is performed three times. With this three times of voltage application, it is possible to achieve a black display state in each pixel and make the stored charge amount at the liquid crystal in each pixel substantially zero.Type: ApplicationFiled: October 29, 2002Publication date: March 6, 2003Applicant: FUJITSU LIMITEDInventors: Toshiaki Yoshihara, Shinji Tadaki, Tetsuya Makino, Hironori Shiroto, Yoshinori Kiyota, Keiichi Betsui
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Publication number: 20030043104Abstract: A liquid crystal display apparatus is disclosed. A plurality of pixel electrodes are arranged on a display region of a substrate in a matrix form having a plurality of column lines and a plurality of row lines. Each of a plurality of thin film transistors has a first current electrode connected to a corresponding one of the plurality of pixel electrodes. Each of a plurality of data lines is arranged between odd column line and even column line of a pair of the plurality of column lines and is connected to second current electrodes of thin film transistors which are coupled to odd column line and even column line of the pair. Each of a plurality of first gate lines is connected to gate electrodes of odd thin film transistors which are coupled to one of the plurality of row lines. Each of a plurality of second gate lines is connected to gate electrodes of even thin film transistors which is coupled to the one of the plurality of row lines. A data driving circuit is provided for driving the data lines.Type: ApplicationFiled: June 26, 2002Publication date: March 6, 2003Applicant: Samsung Electronics Co., Ltd.Inventors: Dong-Ho Lee, Jin Jeon
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Publication number: 20030043105Abstract: A liquid crystal display device with no flicker and with bright excellent display is provided. A polarity pattern of a conventional frame inversion driving is one kind of display. A polarity pattern of a conventional source line inversion driving is two kinds of display, and a disclination pattern is one kind of display. On the contrary, in a circuit structure of the present invention, polarity patterns are made to have not less than four kinds, and disclination patterns are made to have not less than two kinds. By this, bright display in which flicker is not included and poor display due to disclination is improved, can be obtained.Type: ApplicationFiled: October 29, 2002Publication date: March 6, 2003Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventor: Yoshiharu Hirakata
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Publication number: 20030043106Abstract: This present invention relates to a lamp drive apparatus and a drive method for an LCD equipped portable electronics to maintain a user-selected level of brightness in accordance with surrounding temperature of the lamp. In one operation mode a lamp drive apparatus reduces the current, which is applied into the lamp to maintain the already selected level of brightness in accordance with a detected lamp surrounding temperature where the brightness of the lamp has already been set in the LCD, to make the LCD device to illuminate no brighter than the selected level of brightness. Accordingly, the battery power can be used more efficiently or effectively. Thus, the battery life can be extended.Type: ApplicationFiled: July 15, 2002Publication date: March 6, 2003Applicant: LG Electronics Inc.Inventor: Jong Hyun Woo
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Publication number: 20030043107Abstract: A liquid crystal display (LCD) system having LED backlight luminance sensing is disclosed. An array of LEDs in a backlighting position includes a plurality of LED strings. At least one LED from at least one string is identified as a sampling LED. The light emitted from the sampling LED is detected via an optical path using a light sensor. The reading from the sensor is contrast with a command, which results in a power compensation to the array accordingly. In one embodiment, the system includes a sampling enclosure encasing the sampling LED and light sensor. The sampling LED's direction of emission is altered from the string and reflected from the inside of the enclosure. In another embodiment, the system includes a direct sensing optical path between the light sensor and the sampling LED.Type: ApplicationFiled: September 5, 2001Publication date: March 6, 2003Inventors: Joseph H. Ruby, Alan S. Feldman
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Publication number: 20030043108Abstract: A display panel includes a transparent image recording sheet having electrophotographically formed thereon at least a background portion, wherein space factor of pinholes per unit area of the background portion is no greater than 1×10−2%. A method of manufacturing the display panel is also disclosed. The background portion has a transparent optical density of 3.0 or greater and an image portion has a transparent optical density of 1.0 or less, and preferably 0.1 to 1. A toner used for electrophotographically forming the background portion and the image portion has a number average molecular weight of 1,000 to 6,000 and a weight average molecular weight of 30,000 to 150,000 as measured by gel permeation chromatography with respect to a portion of the toner dissolved in tetrahydrofuran, and has respective molecular weight distribution peaks in molecular weight ranges of 1000 to 10,000 and 100,000 to 1,500,000.Type: ApplicationFiled: June 12, 2002Publication date: March 6, 2003Applicant: Denso CorporationInventors: Teruhiko Iwase, Seki Yamaguchi, Yoshifumi Iida, Masanori Ichimura, Yoko Tomita, Yasuyuki Kobayashi
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Publication number: 20030043109Abstract: A single unit compact, self-contained, portable personal computer system includes an enclosure having a power supply port disposed on outside of the enclosure, a computer system configured and arranged in the enclosure, and a handle and at least one wheel to transport the system by pulling the handle, wherein the handle is extendable from the enclosure and retractable into the enclosure. The computer system includes a plurality of personal computer components having an input device and an output device, a printing module, a scanning module, a copying module, a laptop docking, and a video cam, etc. In one embodiment, a CPU, memory, a motherboard, a hard drive, an operating system, user interface components including an infrared mouse, an infrared keyboard, and a flat screen display, and components including a scanning device, a printing unit, and a complete PC telephony system, etc., all possessing a single power supply are contained within a single system enclosure.Type: ApplicationFiled: August 29, 2001Publication date: March 6, 2003Inventor: Cuc Hong
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Publication number: 20030043110Abstract: Disclosed herein is a personal mobile display that operate in collaboration with a host computer system that include a processor for executing PC compatible application programs capable of generating and displaying a plurality of operational functions and data in response to user specified input. The host system also includes a wireless data transceiver capable of communicating and exchanging application or system commands and data between the host computer and portable display tablet. The portable display tablet comprises a graphics display panel, a micro-controller, and a wireless transceiver to provide short-range communication between the host computer system and portable display tablet. The micro-controller of the portable display tablet executes a control program to process the commands and data received from the host computer via the wireless transceiver and provides the resultant application window, template, or graphical display data to the graphics display panel.Type: ApplicationFiled: September 4, 2001Publication date: March 6, 2003Applicant: AirSpeakInventors: John Chaves, Glenn Perkins, Chuck Robinson
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Publication number: 20030043111Abstract: A portable storage device for presentation and having laser pointing function comprises a case and a cover assembled on one side of the case. The case contains a storage unit for data storage and a USB interface. The portable storage device has plug-and-play ability to a computer through the USB interface and can send data to the computer. The cover has a laser diode connected to a circuit board within the cover. The cover further has a switch to control the on/off operation of the laser diode. The presentation data in the storage unit can be downloaded to the computer and the cover with laser diode can be operated as a laser pointer.Type: ApplicationFiled: September 6, 2001Publication date: March 6, 2003Inventor: Ing-Kai Huang
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Publication number: 20030043112Abstract: A content display system is disclosed for offering, excellent multimedia content browsing/viewing environments to handheld device users, from a server of a communication network, by the use of a handheld device and a cooperating computer device cooperated to the handheld device.Type: ApplicationFiled: May 31, 2002Publication date: March 6, 2003Inventors: Shinji Ota, Masayoshi Ohashi, Daisuke Morikawa, Shoichi Yamazaki, Takayuki Warabino, Hajime Nakamura, Hideaki Iwashita
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Publication number: 20030043113Abstract: In a coordinates input apparatus having a coordinates input surface that is operated by a coordinates pointer, a pointing mark on a screen being moved in accordance with the operation of the coordinates pointer, the coordinates input surface is divided by boundaries into at least nine divided regions, a function switch is allocated to each of the divided regions, and a predetermined function is associated with the function switch, the predetermined function being executed when the coordinates pointer is moved from a first divided region to a second divided region across one of the boundaries.Type: ApplicationFiled: September 3, 2002Publication date: March 6, 2003Applicant: Alps Electric Co., Ltd.Inventor: Akihisa Itoh