Patents by Inventor Chun-Tsai Chang

Chun-Tsai 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: 11984385
    Abstract: The present disclosure is related to a lead frame structure. The lead frame structure includes a bottom board and a blocking wall. The bottom board has a first conductive portion and a second conductive portion. The first conductive portion separates from the second conductive portion. The first and second conductive portions are configured to electrically connect to a light source. The blocking wall is located on the bottom board, and the blocking wall surrounds an opening. The first and the second conductive portions are exposed from the opening. The first and the second conductive portions each have an extending portion. The extending portion extends beyond an external surface of the blocking wall in a horizontal direction.
    Type: Grant
    Filed: April 14, 2021
    Date of Patent: May 14, 2024
    Assignee: Jentech Precision Industrial Co., LTD.
    Inventors: Jian-Tsai Chang, Chin-Jui Yu, Chun-Hsiung Wang, Wei-Chi Lin
  • Patent number: 7724718
    Abstract: A wireless communication device includes a communication module including a plurality of networking units and a radiator control circuit. Each of said networking units includes at least two radiators for transmitting wireless signals, and said radiator control circuit connects to said networking units for controlling switching on and off of said radiators. The wireless communication device further includes a data processing module including a memory unit for storing a first transmission parameter, a computing unit for calculating a data transmission information of said networking units, and a control unit for controlling said control circuit of said communication module according to said data transmission information. Said communication module includes a first networking unit and a second networking unit, said radiators of said first networking unit is adjacent to said radiators of said second networking unit, and said first and second networking units utilize different transmission channels.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: May 25, 2010
    Assignee: Wistron NeWeb Corporation
    Inventors: Tien-Kuei Lee, Chun-Tsai Chang
  • Publication number: 20080212489
    Abstract: A wireless communication device includes a communication module including a plurality of networking units and a radiator control circuit. Each of said networking unit includes at least two radiators for transmitting wireless signals, and said radiator control circuit connects to said networking units for controlling switching on and off of said radiators. The wireless communication device further includes a data processing module including a memory unit for storing a first transmission parameter, a computing unit for calculating a data transmission information of said networking units, and a control unit for controlling said control circuit of said communication module according to said data transmission information. Said communication module includes a first networking unit and a second networking unit, said radiators of said first networking unit is adjacent to said radiators of said second networking unit, and said first and second networking units utilize different transmission channels.
    Type: Application
    Filed: March 31, 2008
    Publication date: September 4, 2008
    Inventors: Tien-Kuei Lee, Chun-Tsai Chang
  • Patent number: 7420955
    Abstract: A wireless communication device includes a housing, and a wireless communication module installed inside the housing. The wireless communication module includes a plurality of WLAN units, and each WLAN unit includes at least one antenna for receiving and emitting radio signals. The wireless communication module further includes an antenna control unit connected to the plurality of WLAN units for switching the antennas of the plurality of WLAN units, and a processing module installed inside the housing including a computation unit for computing the data transmission information of the plurality of WLAN units and a control unit for controlling the antenna control unit according to the data transmission information computed by the computation unit.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: September 2, 2008
    Assignee: Wistron NeWeb Corporation
    Inventors: Tien-Kuei Lee, Chun-Tsai Chang
  • Publication number: 20060002319
    Abstract: A wireless communication device includes a housing, and a wireless communication module installed inside the housing. The wireless communication module includes a plurality of WLAN units, and each WLAN unit includes at least one antenna for receiving and emitting radio signals. The wireless communication module further includes an antenna control unit connected to the plurality of WLAN units for switching the antennas of the plurality of WLAN units, and a processing module installed inside the housing including a computation unit for computing the data transmission information of the plurality of WLAN units and a control unit for controlling the antenna control unit according to the data transmission information computed by the computation unit.
    Type: Application
    Filed: December 29, 2004
    Publication date: January 5, 2006
    Inventors: Tien-Kuei Lee, Chun-Tsai Chang