Patents by Inventor Tetsuo Funane

Tetsuo Funane 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).

  • Semiconductor integrated circuit and non-contact electronic device using the same
    Patent number: 8198983
    Abstract: Depending on the power supplied to the non-contact electronic device, the voltage suppression characteristic of the regulator function mounted in a power supply circuit is changed. When the power supplied to the non-contact electronic device is small, the voltage change amount of the voltage between antenna terminals for the current flowing in the antenna is increased, and when the power supplied to the non-contact electronic device is large, the voltage change amount of the voltage between the antenna terminals for the current flowing in the antenna is decreased. By this means, the current change of the entire consumption current for the current change of the load modulator (transmitting circuit) at the time of the long distance communication is increased.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: June 12, 2012
    Assignee: Renesas Electronics Corporation
    Inventors: Kazuki Watanabe, Hisataka Tsunoda, Tetsuo Funane
  • Semiconductor integrated circuit and non-contact electronic device using the same
    Publication number: 20070249398
    Abstract: Depending on the power supplied to the non-contact electronic device, the voltage suppression characteristic of the regulator function mounted in a power supply circuit is changed. When the power supplied to the non-contact electronic device is small, the voltage change amount of the voltage between antenna terminals for the current flowing in the antenna is increased, and when the power supplied to the non-contact electronic device is large, the voltage change amount of the voltage between the antenna terminals for the current flowing in the antenna is decreased. By this means, the current change of the entire consumption current for the current change of the load modulator (transmitting circuit) at the time of the long distance communication is increased.
    Type: Application
    Filed: April 19, 2007
    Publication date: October 25, 2007
    Inventors: Kazuki Watanabe, Hisataka Tsunoda, Tetsuo Funane