Patents by Inventor Chao-Wei Chang

Chao-Wei Chang 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).

  • Patent number: 11764451
    Abstract: A waveguide structure includes a dielectric layer, a plurality of circuit layers, a plurality of insulation layers, and a conductor connection layer. The dielectric layer has an opening. The circuit layers are disposed on the dielectric layer. The insulation layers and the circuit layers are alternately stacked. The conductor connection layer covers an outer wall of the opening in a direction perpendicular to the circuit layers and connects at least two circuit layers on two opposite sides of the opening. At least the conductor connection layer and a part of the circuit layers define an air cavity for transmitting signals at a position corresponding to the opening.
    Type: Grant
    Filed: January 20, 2021
    Date of Patent: September 19, 2023
    Assignee: Subtron Technology Co., Ltd.
    Inventors: Jenn-Hwan Tarng, Nai-Chen Liu, Yin-Kai Lin, Tsung-Han Lee, Chao-Wei Chang
  • Publication number: 20210384618
    Abstract: A waveguide structure includes a dielectric layer, a plurality of circuit layers, a plurality of insulation layers, and a conductor connection layer. The dielectric layer has an opening. The circuit layers are disposed on the dielectric layer. The insulation layers and the circuit layers are alternately stacked. The conductor connection layer covers an outer wall of the opening in a direction perpendicular to the circuit layers and connects at least two circuit layers on two opposite sides of the opening. At least the conductor connection layer and a part of the circuit layers define an air cavity for transmitting signals at a position corresponding to the opening.
    Type: Application
    Filed: January 20, 2021
    Publication date: December 9, 2021
    Applicant: Subtron Technology Co., Ltd.
    Inventors: Jenn-Hwan Tarng, Nai-Chen Liu, Yin-Kai Lin, Tsung-Han Lee, Chao-Wei Chang
  • Publication number: 20200167253
    Abstract: A method for remote diagnosis for hardware, generating a trigger command by a remote management device comprising a plurality of candidate commands for triggering a baseboard management controller when the remote management device receives a user command, and sending a executing command to a BIOS by the triggered baseboard management controller; performing a diagnosis process and generating a diagnosis message according to the diagnosis process based on a boot code of the BIOS by the server, and then sending the diagnosis message to the baseboard management controller by the BIOS. Storing the diagnosis message by the baseboard management controller, and sending a feedback command to the remote management device after the baseboard management controller stores the diagnosis message, and then generating a feedback message by the remote management device.
    Type: Application
    Filed: December 13, 2018
    Publication date: May 28, 2020
    Applicants: INVENTEC (PUDONG) TECHNOLOGY CORPORATION, INVENTEC CORPORATION
    Inventors: Chao-Wei CHANG, Wen-Chiang FAN, Shan-Heng WU
  • Patent number: 9826305
    Abstract: An audio device includes a digital-to-analog converter, an amplifier, a speaker, a power management unit and a temperature sensor. The digital-to-analog converter is configured to convert a digital audio signal into an analog audio signal. The amplifier is coupled to the digital-to-analog converter and configured to amplify the analog audio signal and generate an amplified analog audio signal. The speaker is coupled to the amplifier and configured to broadcast the amplified analog audio signal. The power management unit is configured to provide the amplifier with a first working voltage and provide the digital-to-analog converter with a second working voltage. The temperature sensor is coupled to the speaker and configured to generate a temperature detection signal according to a temperature of the speaker. Wherein, the power management unit adjusts at least one of the first working voltage and the second working voltage according to the temperature detection signal.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: November 21, 2017
    Assignee: Realtek Semiconductor Corp.
    Inventors: Yi-Chang Tu, Chao-Wei Chang, Ming-Cheng Chiang
  • Publication number: 20150263684
    Abstract: An audio device includes a digital-to-analog converter, an amplifier, a speaker, a power management unit and a temperature sensor. The digital-to-analog converter is configured to convert a digital audio signal into an analog audio signal. The amplifier is coupled to the digital-to-analog converter and configured to amplify the analog audio signal and generate an amplified analog audio signal. The speaker is coupled to the amplifier and configured to broadcast the amplified analog audio signal. The power management unit is configured to provide the amplifier with a first working voltage and provide the digital-to-analog converter with a second working voltage. The temperature sensor is coupled to the speaker and configured to generate a temperature detection signal according to a temperature of the speaker. Wherein, the power management unit adjusts at least one of the first working voltage and the second working voltage according to the temperature detection signal.
    Type: Application
    Filed: March 11, 2015
    Publication date: September 17, 2015
    Inventors: Yi-Chang TU, Chao-Wei CHANG, Ming-Cheng CHIANG
  • Patent number: 9110843
    Abstract: A rack including a rack management controller and a plurality of server nodes, is disclosed. The rack management controller receives a firmware updating file, and generates an updating message according to the firmware updating file. Each of the plurality of server nodes includes a memory and a baseboard management controller. The memory stores firmware of a basic input output system. The baseboard management controller is coupled to the rack management controller and the memory. The baseboard management controller receives the updating message to download the firmware updating file from the rack management controller and to stores it to a storage space. The baseboard management controller controls the memory to enter a recovery mode after downloading the firmware updating file, and writes the firmware updating file into the memory to update the firmware of the basic input output system.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: August 18, 2015
    Assignees: INVENTEC (PUDONG) TECHNOLOGY CORPORATION, INVENTEC CORPORATION
    Inventors: Kuo-Shu Chiu, Chao-Wei Chang, Jo-Yu Chang
  • Publication number: 20140123121
    Abstract: A rack including a rack management controller and a plurality of server nodes, is disclosed. The rack management controller receives a firmware updating file, and generates an updating message according to the firmware updating file. Each of the plurality of server nodes includes a memory and a baseboard management controller. The memory stores firmware of a basic input output system. The baseboard management controller is coupled to the rack management controller and the memory. The baseboard management controller receives the updating message to download the firmware updating file from the rack management controller and to stores it to a storage space. The baseboard management controller controls the memory to enter a recovery mode after downloading the firmware updating file, and writes the firmware updating file into the memory to update the firmware of the basic input output system.
    Type: Application
    Filed: March 14, 2013
    Publication date: May 1, 2014
    Applicants: INVENTEC CORPORATION, Inventec (Pudong) Technology Corporation
    Inventors: Kuo-Shu Chiu, Chao-Wei Chang, Jo-Yu Chang