Patents by Inventor Jichen XIAO

Jichen XIAO 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).

  • Publication number: 20240380869
    Abstract: A laser projection apparatus and a laser projection display method are provided. The laser projection apparatus includes a laser source, an optical engine, a projection lens, and a power system architecture. The power system architecture includes a digital light processing (DLP) control processing portion. The DLP control processing portion is configured to: output a first enable signal and a first luminance adjustment signal to a laser driver circuit and a first drive signal to a digital micro-mirror device, in the first period; output a second enable signal and a second luminance adjustment signal to the laser driver circuit and a second drive signal to the digital micro-mirror device, in the second period. The laser driver circuit is configured to: drive a laser array to emit a primary color beam in the first period, and drive the laser array to be turned off in the second period.
    Type: Application
    Filed: May 13, 2024
    Publication date: November 14, 2024
    Applicant: HISENSE LASER DISPLAY CO., LTD
    Inventors: Jichen XIAO, Yishi ZHAO
  • Publication number: 20240312377
    Abstract: A laser projection apparatus is provided and includes an optical modulating assembly, a vibrating device, a projection lens, and a circuit architecture. The circuit architecture includes an image processing sub-circuit and a display driving sub-circuit. The image processing sub-circuit is configured to perform frame division on image data of an image to be displayed to obtain image signals of a plurality of frames of sub-images to generate a frame division control signal. The display driving sub-circuit is configured to output the image signals of the plurality of frames of sub-images to the optical modulating assembly and output a vibration instruction to the vibrating device based on the output timing of the image signals of the plurality of frames of sub-images, so as to control the vibrating device to perform vibrations, so that the projection beams are output through the vibrating device.
    Type: Application
    Filed: March 27, 2024
    Publication date: September 19, 2024
    Applicant: HISENSE LASER DISPLAY CO., LTD
    Inventors: Qian LIANG, Dabo GUO, Jichen XIAO, Lingyue CUI, Chao WU, Kai WU
  • Patent number: 12022240
    Abstract: A laser projection display method includes: in an output period for a laser source to output a primary color beam, controlling the laser source to be turned off according to a set rotation switching period, the rotation switching period indicating a moment when the laser source is turned off and a moment when the laser source is turned on; in the rotation switching period, driving micro-mirrors in a digital micro-mirror device to perform rotation switching between an ON state and an OFF state until the moment when the laser source is turned on indicated by the rotation switching period is reached; and when the moment when the laser source is turned on is reached, controlling the laser source to be turned on, and driving the micro-mirrors to rotate to project and display an image to be displayed until a next rotation switching period is reached.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: June 25, 2024
    Assignee: HISENSE LASER DISPLAY CO., LTD.
    Inventors: Jichen Xiao, Yishi Zhao
  • Patent number: 11906890
    Abstract: A laser projection apparatus includes a main control circuit, a diffusion wheel driving circuit and a temperature sensor. The temperature sensor is electrically connected to the main control circuit, and configured to detect an ambient temperature. The main control circuit is configured to: determine a target starting current according to the ambient temperature; determine a duty cycle of a second startup pulse width modulation signal according to the target starting current, and provide the second startup pulse width modulation signal to the diffusion wheel driving circuit; and output an operating pulse width modulation signal to the diffusion wheel driving circuit when the diffusion wheel reaches a target rotation speed. The target starting current is a minimum drive current required to drive the motor from standstill to starting to rotate. The target rotation speed is a preset speed at which the diffusion wheel operates normally and speckles are eliminated.
    Type: Grant
    Filed: May 4, 2023
    Date of Patent: February 20, 2024
    Assignee: HISENSE LASER DISPLAY CO., LTD
    Inventors: Xu Chen, Jichen Xiao
  • Patent number: 11856338
    Abstract: A projection apparatus includes a screen, a reel, a projection display structure and a control assembly. The projection display structure is configured to project at least one image to be displayed. Each image to be displayed includes an optical image with content. The screen is configured to display at least one optical image with content in the at least one image to be displayed. The control assembly is connected to the reel and is configured to control the reel to rotate. The reel is further connected to the screen and is configured to drive the screen to move when rotating. The control assembly is further connected to the projection display structure, and the control assembly is further configured to control the projection display structure to project the optical image with content in the image to be displayed onto an unfolded portion of the screen.
    Type: Grant
    Filed: September 30, 2021
    Date of Patent: December 26, 2023
    Assignee: HISENSE LASER DISPLAY CO., LTD
    Inventors: Jichen Xiao, Xu Chen, Yawen Zhu
  • Patent number: 11829057
    Abstract: A projection apparatus includes a detector, a laser source control unit and a laser source unit, and the laser source control unit is connected to the detector and the laser source unit. The detector is configured to obtain a detection signal for indicating whether there is an object to be protected in a laser projection region, and send the detection signal. The laser source control unit is also configured to: receive the detection signal, and send an adjustment signal carrying an adjusted projection parameter to the laser source unit when it is determined that there is the object to be protected in the laser projection region of the laser source unit based on the detection signal. The projection parameter indicates a light emission luminance of at least one laser in the laser source unit. The laser source unit is configured to emit a beam in response to the adjustment signal.
    Type: Grant
    Filed: December 20, 2021
    Date of Patent: November 28, 2023
    Assignee: HISENSE LASER DISPLAY CO., LTD
    Inventors: Xu Chen, Jichen Xiao
  • Publication number: 20230273514
    Abstract: A laser projection apparatus includes a main control circuit, a diffusion wheel driving circuit and a temperature sensor. The temperature sensor is electrically connected to the main control circuit, and configured to detect an ambient temperature. The main control circuit is configured to: determine a target starting current according to the ambient temperature; determine a duty cycle of a second startup pulse width modulation signal according to the target starting current, and provide the second startup pulse width modulation signal to the diffusion wheel driving circuit; and output an operating pulse width modulation signal to the diffusion wheel driving circuit when the diffusion wheel reaches a target rotation speed. The target starting current is a minimum drive current required to drive the motor from standstill to starting to rotate. The target rotation speed is a preset speed at which the diffusion wheel operates normally and speckles are eliminated.
    Type: Application
    Filed: May 4, 2023
    Publication date: August 31, 2023
    Applicant: HISENSE LASER DISPLAY CO., LTD.
    Inventors: Xu CHEN, Jichen XIAO
  • Patent number: 11669005
    Abstract: A laser projection apparatus includes a laser light source, a diffusion wheel including a motor and a diffusion portion, a diffusion wheel driving circuit, a switch circuit and a main control circuit. The main control circuit is configured to sequentially output first and second startup PWM signals in response to a startup instruction. The diffusion wheel driving circuit is configured to drive the motor to drive the diffusion portion to rotate in response to the second startup PWM signal. The main control circuit is configured to obtain a rotation speed of the motor, and output an operating PWM signal and a first switch signal when the rotation speed reaching a target rotation speed is determined. The diffusion wheel driving circuit is configured to drive the motor to drive the diffusion portion to rotate in response to the operating PWM signal.
    Type: Grant
    Filed: July 20, 2021
    Date of Patent: June 6, 2023
    Assignee: HISENSE LASER DISPLAY CO., LTD.
    Inventors: Xu Chen, Jichen Xiao
  • Publication number: 20220113614
    Abstract: A projection apparatus includes a detector, a laser source control unit and a laser source unit, and the laser source control unit is connected to the detector and the laser source unit. The detector is configured to obtain a detection signal for indicating whether there is an object to be protected in a laser projection region, and send the detection signal. The laser source control unit is also configured to: receive the detection signal, and send an adjustment signal carrying an adjusted projection parameter to the laser source unit when it is determined that there is the object to be protected in the laser projection region of the laser source unit based on the detection signal. The projection parameter indicates a light emission luminance of at least one laser in the laser source unit. The laser source unit is configured to emit a beam in response to the adjustment signal.
    Type: Application
    Filed: December 20, 2021
    Publication date: April 14, 2022
    Applicant: Hisense Laser Display Co., Ltd
    Inventors: Xu CHEN, Jichen XIAO
  • Publication number: 20220021855
    Abstract: A projection apparatus includes a screen, a reel, a projection display structure and a control assembly. The projection display structure is configured to project at least one image to be displayed. Each image to be displayed includes an optical image with content. The screen is configured to display at least one optical image with content in the at least one image to be displayed. The control assembly is connected to the reel and is configured to control the reel to rotate. The reel is further connected to the screen and is configured to drive the screen to move when rotating. The control assembly is further connected to the projection display structure, and the control assembly is further configured to control the projection display structure to project the optical image with content in the image to be displayed onto an unfolded portion of the screen.
    Type: Application
    Filed: September 30, 2021
    Publication date: January 20, 2022
    Applicant: Hisense Laser Display Co., Ltd
    Inventors: Jichen XIAO, Xu CHEN, Yawen ZHU
  • Publication number: 20210356853
    Abstract: A laser projection apparatus includes a laser light source, a diffusion wheel including a motor and a diffusion portion, a diffusion wheel driving circuit, a switch circuit and a main control circuit. The main control circuit is configured to sequentially output first and second startup PWM signals in response to a startup instruction. The diffusion wheel driving circuit is configured to drive the motor to drive the diffusion portion to rotate in response to the second startup PWM signal. The main control circuit is configured to obtain a rotation speed of the motor, and output an operating PWM signal and a first switch signal when the rotation speed reaching a target rotation speed is determined. The diffusion wheel driving circuit is configured to drive the motor to drive the diffusion portion to rotate in response to the operating PWM signal.
    Type: Application
    Filed: July 20, 2021
    Publication date: November 18, 2021
    Applicant: Hisense Laser Display Co., Ltd.
    Inventors: Xu CHEN, Jichen XIAO
  • Publication number: 20210289177
    Abstract: A laser projection display method includes: in an output period for a laser source to output a primary color beam, controlling the laser source to be turned off according to a set rotation switching period, the rotation switching period indicating a moment when the laser source is turned off and a moment when the laser source is turned on; in the rotation switching period, driving micro-mirrors in a digital micro-mirror device to perform rotation switching between an ON state and an OFF state until the moment when the laser source is turned on indicated by the rotation switching period is reached; and when the moment when the laser source is turned on is reached, controlling the laser source to be turned on, and driving the micro-mirrors to rotate to project and display an image to be displayed until a next rotation switching period is reached.
    Type: Application
    Filed: May 27, 2021
    Publication date: September 16, 2021
    Applicant: HISENSE LASER DISPLAY CO., LTD.
    Inventors: Jichen XIAO, Yishi ZHAO
  • Patent number: 11044447
    Abstract: A projection display system includes a control assembly, an optical path changing device, a light source assembly, a digital micromirror device, and a projection lens. The control assembly is configured to determine whether a resolution of an image to be projected is greater than a preset resolution. If the resolution of the image to be projected is greater than the preset resolution, the control assembly divides the image to be projected into N sub-images, wherein N is greater than or equal to 2. For each sub-image: the control assembly is further configured to determine a first signal, a second signal, and a third signal according to the sub-image, send the first signal to the light source assembly, send the second signal to the digital micromirror device, and send the third signal to the optical path changing device. The projection lens is configured to project the N sub-images at different times.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: June 22, 2021
    Assignee: HISENSE LASER DISPLAY CO., LTD.
    Inventors: Jichen Xiao, Chao Wu
  • Publication number: 20210092338
    Abstract: A projection display system includes a control assembly, an optical path changing device, a light source assembly, a digital micromirror device, and a projection lens. The control assembly is configured to determine whether a resolution of an image to be projected is greater than a preset resolution. If the resolution of the image to be projected is greater than the preset resolution, the control assembly divides the image to be projected into N sub-images, wherein N is greater than or equal to 2. For each sub-image: the control assembly is further configured to determine a first signal, a second signal, and a third signal according to the sub-image, send the first signal to the light source assembly, send the second signal to the digital micromirror device, and send the third signal to the optical path changing device. The projection lens is configured to project the N sub-images at different times.
    Type: Application
    Filed: May 14, 2020
    Publication date: March 25, 2021
    Inventors: Jichen XIAO, Chao WU
  • Patent number: 10291891
    Abstract: The application provides a method and an apparatus for controlling a laser projection device, the laser projection device being provided with a thermoinduction sensor on housing for acquiring an infrared signal in environment where the laser projection device is located, the method including: acquiring first signal outputted by the thermoinduction sensor in first moment and second signal outputted in current moment, the first moment being prior to the current moment, first signal and second signal being signals outputted by the thermoinduction sensor according to the infrared signal; determining a first signal change rate according to first difference between first signal and second signal and second difference between first moment and current moment; reading a preset signal change rate and a threshold signal; determining an operation mode of laser projection device according to magnitude relation of first signal change rate and preset signal change rate, second signal and threshold signal.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: May 14, 2019
    Assignees: HISENSE CO., LTD., HISENSE USA CORPORATION, HISENSE INTERNATIONAL CO., LTD.
    Inventors: Xu Chen, Zheng Li, Jichen Xiao
  • Patent number: 10284827
    Abstract: The disclosure provides an automatic adjustment method and device for a color wheel. The method comprises: collecting a first frame image corresponding to an actual projection region; determining a proportion of normal pixels in the first frame image according to pixel information of the first frame image; determining a target correction value of the color wheel and each color switch according to the proportion of normal pixels in the first frame image; and adjusting the coordination parameter of the color wheel and each color switch to the target correction value, wherein the proportion of normal pixels in the image corresponding to the actual projection region obtained by adjusting the coordination parameter of the color wheel and each color switch to the target correction value is within an interval of [a %, 100%]; and the proportion of normal pixels in the first frame image is lower than a %, a % being lower than or equal to 100%.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: May 7, 2019
    Assignees: HISENSE CO., LTD., HISENSE USA CORP., HISENSE INTERNATIONAL CO., LTD.
    Inventor: Jichen Xiao
  • Patent number: 10205923
    Abstract: This disclosure relates to an apparatus and method for processing a projected image, and a projection display system, the apparatus including: at least one processor; and a memory communicatively connected with the at least one processor, wherein: the memory stores instructions executable by the at least one processor, wherein the instructions are executed by the at least one processor to cause the at least one processor: to obtain an image to be projected, and resolution of the image to be projected; to segment the image to be projected, into N frames of images, resolution of each of which is no higher than resolution of an optical valve, wherein N is a positive integer more than 1; and to display the N frames of images in a time-division mode, wherein imaging positions of the N frames of images are offset from each other.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: February 12, 2019
    Assignees: Hisense Co., Ltd., Hisense USA Corporation, Hisense International Co., Ltd.
    Inventors: Jichen Xiao, Dabo Guo
  • Publication number: 20180176522
    Abstract: The application provides a method and an apparatus for controlling a laser projection device, the laser projection device being provided with a thermoinduction sensor on housing for acquiring an infrared signal in environment where the laser projection device is located, the method including: acquiring first signal outputted by the thermoinduction sensor in first moment and second signal outputted in current moment, the first moment being prior to the current moment, first signal and second signal being signals outputted by the thermoinduction sensor according to the infrared signal; determining a first signal change rate according to first difference between first signal and second signal and second difference between first moment and current moment; reading a preset signal change rate and a threshold signal; determining an operation mode of laser projection device according to magnitude relation of first signal change rate and preset signal change rate, second signal and threshold signal.
    Type: Application
    Filed: February 28, 2017
    Publication date: June 21, 2018
    Inventors: XU CHEN, ZHENG LI, JICHEN XIAO
  • Patent number: 9743056
    Abstract: Embodiments of this disclosure disclose a method for processing a projection image, including: obtaining an image to be projected, with a first resolution; adjusting the resolution of the image to be projected, according to a second resolution supported by a projection display device, to obtain a first image with a third resolution, number of pixels in the row direction of an image with the third resolution is N times number of pixels in the row direction of an image with the second resolution, and number of pixels in the column direction of the image with the third resolution is M times number of pixels in the column direction of the image with the second resolution; dividing the first image into pixel blocks, integrating pixels in the pixel blocks, to obtain a second image and a third image; and projecting the second image and the third image alternately.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: August 22, 2017
    Assignees: HISENSE CO., LTD., HISENSE USA CORPORATION, HISENSE INTERNATIONAL CO., LTD.
    Inventors: Dabo Guo, Kunming Chen, Jichen Xiao
  • Publication number: 20170187998
    Abstract: This disclosure relates to an apparatus and method for processing a projected image, and a projection display system, the apparatus including: at least one processor; and a memory communicatively connected with the at least one processor, wherein: the memory stores instructions executable by the at least one processor, wherein the instructions are executed by the at least one processor to cause the at least one processor: to obtain an image to be projected, and resolution of the image to be projected; to segment the image to be projected, into N frames of images, resolution of each of which is no higher than resolution of an optical valve, wherein N is a positive integer more than 1; and to display the N frames of images in a time-division mode, wherein imaging positions of the N frames of images are offset from each other.
    Type: Application
    Filed: March 15, 2017
    Publication date: June 29, 2017
    Inventors: Jichen Xiao, Dabo GUO