Patents by Inventor Cheng-Che Tsai
Cheng-Che Tsai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20250024383Abstract: This disclosure provides systems, methods, and devices for wireless communication that support transmission of power limit indications for a UE associated with different frequency bands. In a first aspect, a method of wireless communication includes detecting a first trigger condition for transmission of at least a first indication of a first transmission power limit of the UE and a second indication of a second transmission power limit of the UE, wherein the first transmission power limit is associated with a first frequency band supported by the UE and the second transmission power limit is associated with a second frequency band supported by the UE and transmitting, to a first network node associated with the first frequency band, the first indication and the second indication in accordance with detection of the first trigger condition. Other aspects and features are also claimed and described.Type: ApplicationFiled: July 11, 2023Publication date: January 16, 2025Inventors: Chan-Jui Chian, Chia-Wei Chang, Tzui Lu, Tsung-Te Hou, Kai-Chun Huang, Wei-Che Chang, Yuwei Pan, Cheng-Ting Tsai
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Patent number: 12198652Abstract: A timing controller circuit is arranged to control at least a gate in panel (GIP) circuit in a display panel, and includes a data receiving circuit, a timing detection circuit, a control circuit, and a data transmitting circuit, wherein the data receiving circuit is arranged to receive an image data, the timing detection circuit is coupled to the data receiving circuit, and is arranged to detect an input timing of the image data, the control circuit is coupled to the timing detection circuit, and is arranged to determine a GIP timing of the GIP circuit according to the input timing of the image data, and generate a timing control output according to the GIP timing, and the data transmitting circuit is coupled to the control circuit, and is arranged to transmit the timing control output to the GIP circuit.Type: GrantFiled: August 1, 2022Date of Patent: January 14, 2025Assignee: HIMAX TECHNOLOGIES LIMITEDInventors: Chia-Ming Chuang, Ming-Hung Weng, Cheng-Che Tsai
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Patent number: 12131510Abstract: An object detection system includes a projector that projects an original transmitted light on a scene containing an object; an adjustable device configured to shape the original transmitted light, thereby generating a shaped transmitted light; and an image capture device configured to capture an image from a reflected light from the scene. The original transmitted light is alternated with the shaped transmitted light, thereby resulting in an integrated image captured by the image capture device.Type: GrantFiled: September 28, 2021Date of Patent: October 29, 2024Assignee: Himax Technologies LimitedInventors: Wu-Feng Chen, Ching-Wen Wang, Cheng-Che Tsai, Hsueh-Tsung Lu
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Patent number: 12112492Abstract: A three-dimensional (3D) sensing device is configured to sense an object. The 3D sensing device includes a flood light source, a structured light source, an image sensor, and a controller. The controller is configured to perform: commanding the flood light source and the structured light source to emit a flood light and a structured light in sequence; commanding the image sensor to sense a first reflective light and a second reflective light in sequence, so as to obtain a first image frame and a second image frame; combining the first image frame and the second image frame into a determination frame; and determining that the object is a specular reflection object in response to determining that the determination frame has at least two spots having gray levels satisfying a predetermined condition. A specular reflection object detection method is also provided.Type: GrantFiled: March 10, 2022Date of Patent: October 8, 2024Assignee: HIMAX TECHNOLOGIES LIMITEDInventors: Wu-Feng Chen, Pen-Hsin Chen, Cheng-Che Tsai, Hsueh-Tsung Lu
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Publication number: 20240241259Abstract: A time-of-flight (ToF) three-dimensional (3D) sensing system includes a projector that generates an emitted light corresponding to an emitted signal; a sensor that generates a received signal according to a reflected light; and a decoder that determines a distance between the sensor and the object according to the received signal. The emitted signal associated with the emitted light is generated in a basis period, and the received signal associated with the reflected light is generated by the sensor with a first phase shift with respect to a beginning of the basis period. No emitted light is generated in a supplemental period following the basis period, and the received signal has a second phase shift with respect to a beginning of the supplemental period. The distance between the sensor and the object is determined according to the first phase shift and the second phase shift.Type: ApplicationFiled: January 18, 2023Publication date: July 18, 2024Inventors: Hsueh-Tsung Lu, Ching-Wen Wang, Cheng-Che Tsai, Wu-Feng Chen
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Publication number: 20240233152Abstract: A depth sensing system and a depth sensing method are provided. The sensing system includes depth sensing module and a processor for performing the sensing method. The depth sensing method incudes: obtaining a sensed target data set via a depth sensing module; calculating a period number corresponding to a measuring pixel; and calculating an actual range value or an actual depth of the measuring pixel in accordance with a period number and a range value of the measuring pixel. The step of calculating the period number of the target data set includes: calculating a spatial ratio in accordance with the position values of the pixel of optical center and measuring pixel, and a focal length of the depth sensing module; calculating a basic range in accordance with the spatial ratio and an unit depth; and calculating the period number corresponding to the measuring pixel.Type: ApplicationFiled: January 10, 2023Publication date: July 11, 2024Inventors: Wu-Feng CHEN, Ching-Wen WANG, Cheng Che TSAI, Hsueh-Tsung LU
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Patent number: 12025789Abstract: 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: GrantFiled: September 22, 2021Date of Patent: July 2, 2024Assignee: HIMAX TECHNOLOGIES LIMITEDInventors: Kuan-Sheng Yang, Ming-Hung Weng, Cheng-Che Tsai
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Publication number: 20240168168Abstract: A three-dimensional (3D) scanning system includes a projector that generates an emitted light projected on an object, a reflected light being reflected from the object; a sensor that generates image data according to the reflected light; and a depth processor that generates depth data according to the image data and at least one modified factor representing corresponding deviation amount between the image data and an ideal image data due to a circle of confusion caused by the reflected light passing a lens of the sensor and then irradiating a sense plane of the sensor out of focus.Type: ApplicationFiled: November 22, 2022Publication date: May 23, 2024Inventors: Min-Chian Wu, Ting-Sheng Hsu, Ching-Wen Wang, Cheng-Che Tsai
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Publication number: 20240155231Abstract: A method for performing light shaping with aid of an adaptive projector and associated apparatus are provided.Type: ApplicationFiled: November 7, 2022Publication date: May 9, 2024Applicant: HIMAX TECHNOLOGIES LIMITEDInventors: Wu-Feng Chen, Ching-Wen Wang, Cheng-Che Tsai, Hsueh-Tsung Lu
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Patent number: 11979661Abstract: A method for performing light shaping with aid of an adaptive projector and associated apparatus are provided.Type: GrantFiled: November 7, 2022Date of Patent: May 7, 2024Assignee: HIMAX TECHNOLOGIES LIMITEDInventors: Wu-Feng Chen, Ching-Wen Wang, Cheng-Che Tsai, Hsueh-Tsung Lu
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Publication number: 20240119613Abstract: A structured-light three-dimensional (3D) scanning system includes a projector that emits a projected light with a predetermined pattern onto an object; an image capture device that generates a captured image according to a reflected light reflected from the object, the predetermined pattern of the projected light being distorted due to 3D shape of the object, thereby resulting in a distorted pattern; a depth decoder that converts the distorted pattern into a depth map representing the 3D shape of the object; and a depth fusion device that generates a fused depth map according to at least two different depth maps associated with the object.Type: ApplicationFiled: October 7, 2022Publication date: April 11, 2024Inventors: Hsueh-Tsung Lu, Ching-Wen Wang, Cheng-Che Tsai, Wu-Feng Chen
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Publication number: 20240085172Abstract: The device includes a projecting device, an image sensor and a computing circuit. The projecting device provides a light beam having a predetermined pattern that is projected onto an object. The image sensor receives the light beam reflected from the object to generate an image. The computing circuit compares the image with a first ground-truth image and a ground-truth image to generate a first depth value and a second depth value respectively. The first and second depth values are combined to generate a depth result.Type: ApplicationFiled: September 11, 2022Publication date: March 14, 2024Inventors: Wu-Feng CHEN, Ching-Wen WANG, Cheng Che TSAI, Hsueh-Tsung LU
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Patent number: 11929041Abstract: 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: GrantFiled: November 29, 2022Date of Patent: March 12, 2024Assignee: HIMAX TECHNOLOGIES LIMITEDInventors: Chao Chen Huang, Tsai Hsing Chen, Cheng Che Tsai, Ching-Wen Wang
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Publication number: 20240071281Abstract: A display device includes a display panel and a circuit. For a first sub-pixel, the circuit obtains a corresponding second sub-pixel. The circuit calculates a first compensation value according to the grays levels of the first sub-pixel and the second sub-pixel, and calculates a second compensation value according to the polarity states of the first sub-pixel and the second sub-pixel and the difference between the gray levels of the two sub-pixels. The circuit also calculates a gain according to the position of the first sub-pixel, compensates the gray level to the first sub-pixel according to the first compensation value, the second compensation value and the gain to obtain an output gray level, and drives the first sub-pixel according to the output gray level.Type: ApplicationFiled: June 16, 2023Publication date: February 29, 2024Inventors: Cheng-Hsun LEE, Tsai Hsing CHEN, Cheng Che TSAI, Ching-Wen WANG
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Patent number: 11915512Abstract: 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: GrantFiled: October 14, 2021Date of Patent: February 27, 2024Assignee: Himax Technologies LimitedInventors: Ching-Wen Wang, Cheng-Che Tsai, Ting-Sheng Hsu, Min-Chian Wu
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Publication number: 20240062398Abstract: A depth sensing apparatus includes an image sensor, a depth decoder and a depth fusion processor. The mage sensor captures raw images from a scene with different exposure configurations. The depth decoder decodes each raw image into depth values, each raw image having pixels respectively corresponding to the depth values. The depth fusion processor sets one of the raw images and the rest of at least one raw image as a base image and at least one reference image, respectively, and substitutes invalid depth values of the depth values corresponding to the base image with valid depth values corresponding to the at least one reference image to generate a depth map of the scene. The invalid depth values corresponding to the base image and the valid depth values corresponding to the at least one reference image map to the same pixels of the raw images.Type: ApplicationFiled: August 21, 2022Publication date: February 22, 2024Inventors: Hsueh-Tsung LU, Ching-Wen WANG, Cheng Che TSAI, Wu-Feng CHEN
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Patent number: 11900854Abstract: A display device includes a display panel and a circuit. For a first sub-pixel, the circuit obtains a corresponding second sub-pixel. The circuit calculates a first compensation value according to the grays levels of the first sub-pixel and the second sub-pixel, and calculates a second compensation value according to the polarity states of the first sub-pixel and the second sub-pixel and the difference between the gray levels of the two sub-pixels. The circuit also calculates a gain according to the position of the first sub-pixel, compensates the gray level to the first sub-pixel according to the first compensation value, the second compensation value and the gain to obtain an output gray level, and drives the first sub-pixel according to the output gray level.Type: GrantFiled: June 16, 2023Date of Patent: February 13, 2024Assignee: HIMAX TECHNOLOGIES LIMITEDInventors: Cheng-Hsun Lee, Tsai Hsing Chen, Cheng Che Tsai, Ching-Wen Wang
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Publication number: 20240037767Abstract: A 3D sensing system including a liquid crystal lens, a projector, an image sensor and a circuit. The projector provides a light beam to the liquid crystal lens which applies a pattern to the light beam to generate a structured light. The image sensor captures an image corresponding to the structured light. The circuit calculates first depth information according to the pattern and the image, and determines if the image satisfies a quality requirement. If the image does not satisfy the quality requirement, the pattern is modified and another image is captured for calculating second depth information. The first and second depth information are combined to generate a depth map.Type: ApplicationFiled: July 31, 2022Publication date: February 1, 2024Inventors: Min-Chian WU, Pen-Hsin CHEN, Ching-Wen WANG, Cheng-Che TSAI, Ting-Sheng HSU
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Patent number: 11854302Abstract: A system for calibrating a three-dimensional scanning device includes a structured-light scanner capable of performing a structured-light operation, and a processor that performs calibration on a device under calibration (DUC). The structured-light scanner captures a base image by performing the structured-light operation prior to calibration. The structured-light scanner captures a calibration image with respect to corresponding DUC during calibration, and the calibration image is inputted to the processor, which determines transformation mapping from the calibration image to the base image. The determined transformation is then transferred to the DUC during calibration.Type: GrantFiled: September 28, 2021Date of Patent: December 26, 2023Assignee: Himax Technologies LimitedInventors: Hsueh-Tsung Lu, Ching-Wen Wang, Cheng-Che Tsai, Wu-Feng Chen
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Patent number: 11847788Abstract: A depth processor including a region of interest determination circuit and a depth decoder is provided. The region of interest determination circuit is configured to determine a size of a region of interest of an input image. The depth decoder is coupled to the region of interest determination circuit and configured to generate a depth map of the input image according to a filter size. The filter size is set according to the size of the region of interest of the input image.Type: GrantFiled: April 15, 2021Date of Patent: December 19, 2023Assignee: HIMAX TECHNOLOGIES LIMITEDInventors: Hsueh-Tsung Lu, Ching-Wen Wang, Cheng-Che Tsai, Wu-Feng Chen