Abstract: A timing controller includes a count control circuit, a pulse width detector, and a pulse generator. The count control circuit receives an external enable signal. Pulses of the external enable signal include an effective and a blank period of image data. The count control circuit counts pulse widths of each of the pulses. The pulse width detector receives the counted pulse widths, compares a pulse width of a present pulse with pulse widths of previous pulses, and detects a pulse width of a previous pulse that has a pulse width smaller than the pulse width of the present pulse. The pulse generator generates three output pulses having pulse widths that are one-third a period of the detected previous pulse. The pulse generator outputs the first, second and third pulses as an internal enable signal.
Abstract: The present invention discloses a touch display driving circuit and a touch display apparatus. The touch display driving circuit comprises a display device, a driving transistor, a light-sensing touch module and a compensation driving module, the light-sensing touch module comprises a phototransistor and a light-sensing control unit, a gate of the phototransistor is connected with a first electrode of the phototransistor, the light-sensing control unit is connected with the phototransistor and a read line, a control electrode of the driving transistor is connected with the compensation driving module, the compensation driving module is connected with a first power supply terminal, a first terminal of the display device, a first electrode of the driving transistor and a second electrode of the driving transistor, a second terminal of the display device is connected with a second power supply terminal.
Abstract: A display device and a mobile terminal include a main display unit and an auxiliary display unit that are driven in a full display mode or an always-on mode. The display device includes a data driver configured to supply a data voltage to the data lines, a first gate driver connected to gate lines of the main display unit, and a second gate driver connected to gate lines of the auxiliary display unit. In the full display mode, at least a portion of the main display unit and the auxiliary display unit display image data. In the always-on mode, at least a portion of the auxiliary display unit displays image data.
Type:
Grant
Filed:
December 28, 2015
Date of Patent:
May 5, 2020
Assignee:
LG Display Co., Ltd.
Inventors:
Kwanwoong Park, Sanghoon Kwon, Jongyoon Kim
Abstract: An HMD (10a) generates region information indicating a region having, as an axis, a line which passes through the position of the HMD (10a) and that of a wireless I/F (105a). The HMD acquires position information of each of wireless I/Fs of other image processing apparatuses (11b, 11c). The HMD determines if the position indicated by the acquired position information is included in the region indicated by the region information. The HMD selects one of the wireless I/F (105a) and other wireless I/Fs as a wireless communication partner according to the determination result, and receives images via wireless communication with the selected wireless I/F.
Abstract: A method operates a mobile virtual reality system in a motor vehicle. The method involves providing a configuration of a virtual motor vehicle, detecting a position of a pair of virtual reality glasses arranged in the motor vehicle, in particular a pair of virtual reality glasses that a user has put on, and operating the virtual reality glasses such that they display the configured virtual motor vehicle from a virtual viewing position that corresponds to the detected position of the virtual reality glasses in the motor vehicle. A mobile virtual reality system includes the pair of virtual reality glasses.
Abstract: A device for providing a touch-based user interface is disclosed. The device comprises a screen, a camera, and processor. The camera images a reflection of the screen by a cornea of a user of the device. The processor displays at least one user-interface element on the screen, detects that a finger of a hand touches or is about to touch the screen, estimates a trajectory of the finger, and determines an intended location of touch of the finger on the screen. The trajectory of the finger is estimated by analyzing a sequence of images of the reflection. The intended location of touch is determined based on the estimated trajectory of the finger.
Type:
Grant
Filed:
October 22, 2014
Date of Patent:
April 14, 2020
Assignee:
Telefonaktiebolaget LM Ericsson (publ)
Inventors:
Julian Charles Nolan, Matthew John Lawrenson, Till Burkert
Abstract: A system and method for recognizing a signet and for performing an action associated with the signet, wherein the signet is an inanimate object. In one embodiment, the method includes generating a touch signal with a signet, the touch signal representing a particular signet pattern, recognizing the particular signet pattern, and performing an action associated with the particular signet pattern.
Abstract: A movement controlling apparatus includes a pointing device for operating a movement of an object. A distance between a straight line connecting previous input coordinates and current input coordinates and a central point of the object is calculated. A velocity of the object is calculated on the basis of the distance to thereby control a movement of the object.
Abstract: A display device includes a multi-primary-color display panel with subpixels arranged in a matrix pattern of columns and rows; and a signal converter arranged to convert a video signal, having values that represent the colors of pixels with a matrix pattern, into a multi-primary-color signal for use in the multi-primary-color display panel. The signal converter associates a value of the video signal representing the color of at least one of pixels on a pth row with values of the multi-primary-color signal corresponding to the luminances of subpixels on (s?1)th and sth rows, and also associates a value of the video signal representing the color of at least one of the pixels on a (p+1)th row with values of the multi-primary-color signal corresponding to the luminances of subpixels on sth and (s+1)th rows.
Abstract: A display device includes: a pixel array including pixel circuits arranged in a matrix, each pixel circuit having a light emitting element, a drive transistor, and a storage capacitor storing a threshold voltage of the transistor and an inputted signal value; and a threshold correction operation means for performing a threshold correction operation plural times, which allows the storage capacitor to store the threshold voltage by applying a drive voltage to the transistor in a state where a gate potential of the transistor is fixed in a reference potential before giving the signal value to the storage capacitor. The threshold correction operation is started in a state where the gate potential is made a correction acceleration potential higher than the reference potential only at the threshold correction operation of the first half in the plural threshold correction operations, then, returns the gate potential to the reference potential to be fixed.
Abstract: An electrostatic capacitive touch sensor device includes sensing electrode provided at a plurality of positions, a high-frequency signal source that applies a high-frequency signal to the sensing electrode through a predetermined impedance element, a wiring portion that connects the sensing electrode and the impedance element, a shield portion provided to embrace the sensing electrodes and the connecting pattern, and a shield signal source that applies a shield signal to the shield portion and has the same phase and amplitude as the high-frequency signal source.
Abstract: A display device includes: a pixel array including pixel circuits arranged in a matrix state, in which each pixel circuit has a light emitting element, a drive transistor, and a storage capacitor storing a threshold voltage of the drive transistor and an inputted signal value; a threshold correction operation means for performing a threshold correction operation plural times, which allows the storage capacitor to store the threshold voltage of the drive transistor before giving the signal value to the storage capacitor; and a cut-off control means for allowing the drive transistor to be cut off in at least one after-correction period and for allowing the drive transistor not to be cut off in at least one after-correction period in plural after-correction periods which are periods after the plural threshold correction operation periods.
Abstract: A sustain pulse generation circuit of a plasma display device generates and switches a first sustain pulse for causing light emission having double peaks, a second sustain pulse having a falling edge steeper than that of the first sustain pulse, and a third sustain pulse having a rising edge and a falling edge steeper than those of the first sustain pulse and causing light emission having a single peak. The second sustain pulse or the third sustain pulse is generated immediately before the third sustain pulse. The first sustain pulse is generated immediately before the second sustain pulse. Provided between the second sustain pulse and the third sustain pulse and between the third sustain pulses is a first overlap period in which a time period for causing the corresponding sustain pulse to rise is overlapped with a time period for causing the corresponding sustain pulse to fall.
Abstract: A light emitting device in which flickers on a screen can be reduced is provided. In the present invention, each pixel has memories and at the start of a frame period, all of bits of digital vide signals are written in the memories. Then, in the frame period, according to information in all of the bit of digital video signals, the light emitting device sequently emit a light in a determined period.
Type:
Grant
Filed:
December 21, 2001
Date of Patent:
December 25, 2012
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
Abstract: A wheel mouse includes a base, a circuit board, a scroll wheel, a wheel swing member, two tilt switches, and a mode-switching element. The wheel swing member has an extension arm. The mode-switching element has an engaging part. The mode-switching element is penetrated through the base and the circuit board and partially protruded outside the surface of the base. By moving the mode-switching element to a first position or a second position, the engaging part is engaged with or separated from the extension arm, so that the wheel mouse is selectively operated in a third-axial wheel operating mode or a tilt wheel operating mode.
Abstract: In a PDP, a waveform which has a reset function, an address function, and a sustain discharge function to a scan electrode while a sustain electrode is biased at a constant voltage. The waveform includes a voltage which corresponds to a difference between a voltage applied to the scan electrode and a voltage applied to the sustain electrode in the general driving waveform. As a result, a board for driving the sustain electrode is eliminated, and a combined board is realized.
Abstract: The invention relates to a microdisplay system that utilizes a small high resolution active matrix liquid crystal display with an illumination system and a magnifying optical system to provide a hand held communication display device. The system can employ an LED illumination system and cellular communication or processor circuits within a compact housing to provide communication devices such as pagers, telephones, televisions, and hand held computer devices with a compact high resolution video display.
Type:
Grant
Filed:
March 3, 1997
Date of Patent:
May 13, 2008
Assignee:
Kopin Corporation
Inventors:
Jeffrey Jacobsen, John C. C. Fan, Stephen A. Pombo, Matthew Zavracky, Rodney Bumgardner, Alan Richard
Abstract: A pointing device includes a housing, a main body and an input section. The housing contains an upper cover and two extending arms, which extended from the upper cover. The main body is housed under the upper cover and located between the two extending arms of the housing. The input section is placed on the front half of the main body for generating (inputting) key signals. The front half (the input section) and the back half of the main body form a smooth surface.
Abstract: A liquid crystal display, apparatus for driving a liquid crystal display and a method of driving gray voltages for the same. The liquid crystal display includes a plurality of gate lines transmitting gate signals, a plurality of data lines intersecting the plurality of gate lines and transmitting data voltages, and a plurality of pixel rows. Each pixel row includes a plurality of pixels, and each pixel includes a switching element connected to one of the plurality of gate lines and one of the plurality of data lines. The polarity of the data voltages supplied to the plurality of pixels are inverted by a pixel group including two or more pixel rows. The absolute values of the data voltages applied to one row of the pixel group with respect to a first predetermined voltage are greater than the absolute values of the data voltages applied to another row of the pixel group for the same grays.