Patents by Inventor Kyun-hyon Cha

Kyun-hyon Cha 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).

  • Low-power transmitting apparatus and transmission method in wireless personal area network
    Patent number: 7388849
    Abstract: A low-power transmitting apparatus and transmission method in a wireless personal area network (WPAN). A length of a fragment, a data rate, and a transmission power is selected to transmit a frame with minimum energy consumption in a contention period and a contention-free period. Thus, a quality of service (QoS) requirement for the transmission can be satisfied and the data frame can be transmitted with less energy consumption. Even when the channel status changes, a new transmission criterion suitable for the changed channel status is selected to minimize the consumption of the unnecessary energy. Furthermore, the life span of the network according to the energy consumption under a restricted environment can be lengthened.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: June 17, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-suk Kim, Yang-ick Joo, Jae-won Yoo, Kyun-hyon Cha
  • Low-power transmitting apparatus and transmission method in wireless personal area network
    Publication number: 20060023670
    Abstract: A low-power transmitting apparatus and transmission method in a wireless personal area network (WPAN). A length of a fragment, a data rate, and a transmission power is selected to transmit a frame with minimum energy consumption in a contention period and a contention-free period. Thus, a quality of service (QoS) requirement for the transmission can be satisfied and the data frame can be transmitted with less energy consumption. Even when the channel status changes, a new transmission criterion suitable for the changed channel status is selected to minimize the consumption of the unnecessary energy. Furthermore, the life span of the network according to the energy consumption under a restricted environment can be lengthened.
    Type: Application
    Filed: July 28, 2005
    Publication date: February 2, 2006
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Yong-suk Kim, Yang-ick Joo, Jae-won Yoo, Kyun-hyon Cha