Patents Assigned to Himax Technologies Limited
  • Patent number: 12047074
    Abstract: A driving circuit is provided, including first to second output stage circuits that output, respectively, first and second voltages of a first polarity. The driving circuit further includes a first switch having a first terminal receiving the first voltage from the first output stage circuit and a second terminal coupled to a first output channel through a switching circuit, and a second switch having a first terminal receiving the second voltage from the second output stage circuit and a second terminal coupled to a second output channel through the switching circuit. The driving circuit further includes a first charge sharing circuit having a first terminal coupled to the first output channel and a second terminal coupled to the second output channel. The first charge sharing circuit is turned on to provide charge sharing between the first output channel and the second output channel.
    Type: Grant
    Filed: December 7, 2022
    Date of Patent: July 23, 2024
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventor: Chia-Chu Chien
  • Patent number: 12039918
    Abstract: A voltage controller of a display system includes a gate high voltage detector for detecting a gate high voltage, and a gate low voltage detector for detecting a gate low voltage. The gate high voltage and the gate low voltage are supplied to a gate driver, and the gate high voltage is greater than the gate low voltage.
    Type: Grant
    Filed: March 30, 2023
    Date of Patent: July 16, 2024
    Assignee: Himax Technologies Limited
    Inventor: Han-Wen Huang
  • Patent number: 12039943
    Abstract: A backlight control device for use in an electronic device includes a motion detecting unit, a sound matching unit and a controller. The motion detecting unit is configured to detect motion of a lid section of the electronic device to generate motion data. The sound matching unit is configured to match a soundprint derived from a sound sample that is captured by a sound capture unit, to one or more sound patterns stored within in a sound pattern database to generate a lid state indication signal if the motion data indicates the motion of the lid section corresponds to a predetermined state. The controller is configured to control a backlight module of a display device of the electronic device according to the lid state indication signal.
    Type: Grant
    Filed: October 18, 2023
    Date of Patent: July 16, 2024
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Keng-Chih Chen, Yu-Chun Huang
  • Patent number: 12025789
    Abstract: A display system includes an image display device and a pair of shutter glasses. The image display device includes a display panel, a display communication circuit and a control circuit. The control circuit is configured to control the display communication circuit to transmit a shutter glasses control signal, and configured to control the display panel to alternately display a normal image and a compensate image according to a timing control signal. The pair of shutter glasses includes a pair of shutters, a glasses communication circuit and a shutter control circuit. The glasses communication circuit is configured to receive the shutter glasses control signal. The shutter control circuit is configured to alternately open and close the pair of shutters according to the shutter glasses control signal.
    Type: Grant
    Filed: September 22, 2021
    Date of Patent: July 2, 2024
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Kuan-Sheng Yang, Ming-Hung Weng, Cheng-Che Tsai
  • Patent number: 12020725
    Abstract: An acoustic feature extraction (AFE) circuit includes a plurality of band-pass filters (BPFs) adaptable to a plurality of channels with different band-pass frequency ranges respectively for switchably receiving an amplified signal, thereby generating corresponding filtered signals, the plurality of BPFs including an operational amplifier that is shared among the plurality of channels; and a rectifier switchably coupled to receive the filtered signals, thereby generating a rectified signal. The amplified signal is time-division demultiplexed onto the BPFs in different phases, and the filtered signals are time-division multiplexed onto the rectifier in different phases.
    Type: Grant
    Filed: August 25, 2021
    Date of Patent: June 25, 2024
    Assignees: NCKU Research and Development Foundation, Himax Technologies Limited
    Inventors: Meng-Ju Chiang, Soon-Jyh Chang
  • Patent number: 11990178
    Abstract: A static random-access memory (SRAM) cell includes a first inverter and a second inverter being cross-coupled; a first access transistor that accesses an output of the first inverter under control of a word line; a second access transistor that accesses an output of the second inverter under control of the word line; a first passage transistor that passes a common-mode voltage, controlled by the output of the first inverter; a second passage transistor that passes an input signal, controlled by the output of the second inverter; and a capacitor switchably coupled to receive the common-mode voltage and the input signal through the first passage transistor and the second passage transistor respectively.
    Type: Grant
    Filed: December 13, 2021
    Date of Patent: May 21, 2024
    Assignees: NCKU Research and Development Foundation, Himax Technologies Limited
    Inventors: Wei-Li He, Soon-Jyh Chang
  • Patent number: 11983942
    Abstract: A method for detecting a specific object based on a specific model includes: capturing a set of images, wherein objects in each image include a desired object; transmitting the set of images to a cloud server; in response to found objects being obtained from the set of images based on at least one object detection algorithm in the cloud server, displaying the found objects fora user to confirm which object is desired; in response to the desired object being confirmed from the found objects that are displayed, loading the specific model of the desired object from the cloud server, wherein the specific model of the desired object is trained on the cloud server based on at least the set of images and related CNN algorithm; and performing the specific model to detect the specific object on a captured image.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: May 14, 2024
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Ti-Wen Tang, Kuan-Ting Lai, Chin-Kuei Hsu
  • Patent number: 11983351
    Abstract: A touch data transmission method of present disclosure includes: generating a header information by a first controller according to a detected touch event; generating a first checksum information by the first controller according to the header information; storing the header information and the first checksum information to a memory by the first controller; and, storing a plurality of position information of the detected touch event to the memory by the first controller.
    Type: Grant
    Filed: March 14, 2023
    Date of Patent: May 14, 2024
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Chun-Kai Chuang, Jan-Ruei Lin, Yu-Hsiang Lin, I-Sheng Chao
  • Publication number: 20240155231
    Abstract: A method for performing light shaping with aid of an adaptive projector and associated apparatus are provided.
    Type: Application
    Filed: November 7, 2022
    Publication date: May 9, 2024
    Applicant: HIMAX TECHNOLOGIES LIMITED
    Inventors: Wu-Feng Chen, Ching-Wen Wang, Cheng-Che Tsai, Hsueh-Tsung Lu
  • Patent number: 11977705
    Abstract: A touch event processing circuit includes receiving circuits and an average circuit. Each of the receiving circuits includes an operation amplifier, a current processing circuit, and a touch event detection circuit. The operation amplifier receives an input signal from a touch panel, and outputs a first current signal and a second current signal. The current processing circuit processes the first current signal and the second current signal according to a first current average signal and a second current average signal, to generate a processed current signal. The touch event detection circuit detects a touch event according to the processed current signal. The average circuit receives first current signals and second current signals from the receiving circuits; performs an average operation upon the first current signals, to generate the first current average signal; and performs an average operation upon the second current signals, to generate the second current average signal.
    Type: Grant
    Filed: November 28, 2022
    Date of Patent: May 7, 2024
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Jia-Ming He, Yaw-Guang Chang, Yi-Yang Tsai
  • Patent number: 11977307
    Abstract: The cholesteric liquid crystal display (CLCD) device includes first and second cholesteric liquid crystal panels that reflect light within different wavelength ranges. Both panels have gate lines that extend from one side to the other. A gate driver is electrically connected to the first panel's gate lines. Additionally, a flexible printed circuit is electrically connected to both the first and second panels' gate lines.
    Type: Grant
    Filed: July 17, 2023
    Date of Patent: May 7, 2024
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventor: Han Wen Huang
  • Patent number: 11979548
    Abstract: A structured light projector is disclosed, which includes a first light source, a second light source, an optical refractive element and an optical shaper. The first light source and the second light source are configured to respectively emit first incoherent light and second incoherent light. The optical refractive element is arranged over the first and second light sources for refracting the first incoherent light and the second incoherent light. The optical shaper element is arranged over the optical refractive element for shaping the first incoherent light to generate first structured light with plural first optical patterns and shaping the second incoherent light to generate second structured light with plural second optical patterns, in which the first structured light and the second structured light are overlapped onto a region of space.
    Type: Grant
    Filed: April 8, 2022
    Date of Patent: May 7, 2024
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventor: Ming-Shu Hsiao
  • Patent number: 11979661
    Abstract: A method for performing light shaping with aid of an adaptive projector and associated apparatus are provided.
    Type: Grant
    Filed: November 7, 2022
    Date of Patent: May 7, 2024
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Wu-Feng Chen, Ching-Wen Wang, Cheng-Che Tsai, Hsueh-Tsung Lu
  • Patent number: 11972077
    Abstract: A resetting system includes a driver that controls a touchscreen, the driver including a driver communication interface that defines a bus for transferring a transfer signal; and an on-screen display (OSD) device that generates an OSD signal representing a predetermined reset image in response to a predetermined event, the OSD signal superimposing over pixels and graphics data to be rendered on the touchscreen; and a host that transfers the transfer signal to or from the driver, the host including a host communication interface that defines the bus for transferring the transfer signal to or from the driver.
    Type: Grant
    Filed: April 29, 2023
    Date of Patent: April 30, 2024
    Assignee: Himax Technologies Limited
    Inventors: Yu-Nian Ou, Chun-Kai Chuang, Pei-Yuan Hung, Yu-Hsiang Lin
  • Patent number: 11955043
    Abstract: An apparatus for performing subpixel rendering of an RGBW display panel is provided. The apparatus receives an input gray level data to acquire a luminance value of each subpixel of a RGB pixel set including two RGB pixels adjacent to each other. The apparatus calculates a rendered luminance value of each subpixel of a display pixel set including two display pixels adjacent to each other according to the luminance values. The display pixel set of the RGBW display panel includes red, green, blue, and white subpixels. The rendered luminance value of the white subpixel of one of the display pixels is determined according to the saturation value of the corresponding RGB pixel and the luminance value of each subpixel of the corresponding RGB pixel. The apparatus acquires a gray level value of each white subpixel of the display pixel set according to the rendered luminance values.
    Type: Grant
    Filed: September 21, 2022
    Date of Patent: April 9, 2024
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventor: Tung Ying Wu
  • Patent number: 11955041
    Abstract: The control circuit for controlling a display panel is provided. The control circuit includes a first driving circuit and a second driving circuit for driving the display panel. The first driving circuit includes first output terminals and first input terminals. The first driving circuit outputs a plurality of test signals to the first output terminals sequentially during different periods in a diagnosis stage. The second driving circuit includes second input terminals and second output terminals. The second driving circuit receives the test signals through the second input terminals in the diagnosis stage, and outputs a plurality of response signals to the second output terminals sequentially during different periods in response to the test signals. The first driving circuit receives the response signals through the first input terminals, and judges a connecting status of the first driving circuit and the second driving circuit according to the response signals.
    Type: Grant
    Filed: May 25, 2023
    Date of Patent: April 9, 2024
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventor: Chih-Feng Lin
  • Patent number: 11926113
    Abstract: An optical element and a method for manufacturing the optical element are described. The optical element includes a transparent substrate, an optical layer, and an adhesive layer. The optical layer is located on a surface of the transparent substrate. The optical layer has a first surface and a second surface, which are opposite to each other. The first surface is set with various diffracting optical structures. A refractive index of the optical layer is equal to or greater than 1.4. The adhesive layer is sandwiched between the surface of the transparent substrate and the second surface of the optical layer.
    Type: Grant
    Filed: August 3, 2022
    Date of Patent: March 12, 2024
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Han Yi Kuo, Shu-Hao Hsu, Yin Tung Lu
  • Patent number: 11929745
    Abstract: A clock generator includes a resistor-capacitor-based voltage-controlled oscillator (RC-based VCO) that generates an output signal with oscillation frequency controlled by an input voltage at an input node; and a temperature compensator that generates the input voltage to compensate change of the oscillation frequency associated with a change in temperature.
    Type: Grant
    Filed: February 16, 2023
    Date of Patent: March 12, 2024
    Assignee: Himax Technologies Limited
    Inventors: Yu-Shyang Huang, Sheng-Zhe Lin
  • Patent number: 11929041
    Abstract: A display apparatus includes a backlight module with backlight zones, a panel over the backlight module, and a circuit configured to generate compensated pixel data for the panel based on image data and an arrangement of the zones of the backlight module, in which the image data has image areas respectively corresponding to the backlight zones. For a first image area being a low-luminance image area and a luminance intensity of a first zone of the zones corresponding to the first image area being less than a luminance intensity of a second zone corresponding to a second image area neighboring the first image area, the circuit performs first pixel compensation for high-luminance pixels in the second image area and second pixel compensation on low-luminance pixels in the second image area, in which the second pixel compensation is greater than the first pixel compensation.
    Type: Grant
    Filed: November 29, 2022
    Date of Patent: March 12, 2024
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Chao Chen Huang, Tsai Hsing Chen, Cheng Che Tsai, Ching-Wen Wang
  • Patent number: 11915512
    Abstract: A three-dimensional sensing system includes a plurality of scanners each emitting a light signal to a scene to be sensed and receiving a reflected light signal, according to which depth information is obtained. Only one scanner executes transmitting corresponding light signal and receiving corresponding reflected light signal at a time.
    Type: Grant
    Filed: October 14, 2021
    Date of Patent: February 27, 2024
    Assignee: Himax Technologies Limited
    Inventors: Ching-Wen Wang, Cheng-Che Tsai, Ting-Sheng Hsu, Min-Chian Wu