Patents by Inventor Kuniyoshi Marui

Kuniyoshi Marui 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: 4600809
    Abstract: In a telephone system having an automatic response function wherein a predetermined answer message is automatically sent to a calling originator when a speaking path to the calling originator is established in response to a call signal originated by calling from the calling originator, there are provided a DTMF signal decoder for decoding a DTMF signal sent from the calling originator as a result of key operation at the calling originator after the speaking path has been established, and a memory for storing operated key data corresponding to the output of the DTMF signal decoder, whereby information regarding the calling originator is obtained when the stored content of the memory is zero.
    Type: Grant
    Filed: May 24, 1984
    Date of Patent: July 15, 1986
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kaoru Tatsumi, Takao Kishida, Kuniyoshi Marui, Takaaki Ishii
  • Patent number: 4558178
    Abstract: A wireless telephone apparatus is disclosed which includes an acoustic transmission apparatus employing a telephone handset for use during a normal telephone conversation mode and a telephone headset for use during a hands-free telephone conversation mode. No speaker and microphone are used during the hands-free telephone conversation mode. The acoustic transmission apparatus includes a control section which normally connects the telephone handset to the wireless telephone apparatus, but is responsive to the operation of a selector or headset switch to connect the telephone headset without interrupting the telephone conversation. Similarly, the control section enables the user to switch back to using the telephone handset without interrupting the telephone conversation. A visual display is provided to indicate whether the telephone handset or the telephone headset is connected to the wireless telephone apparatus.
    Type: Grant
    Filed: January 4, 1984
    Date of Patent: December 10, 1985
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Hiroshi Yasuda, Kuniyoshi Marui
  • Patent number: 4509201
    Abstract: Two limit voltages are established for a wireless telephone apparatus. If the power supply voltage exceeds the first limit voltage, the transmitter of the wireless telephone apparatus is prevented from radiating signals. At the same time, the central processing unit of the wireless telephone apparatus shelters, in a dedicated shelter register, the control data necessary to carry on communication once power is restored, and an inhibit circuit prevents the central processing unit from writing into the read-write memory. If the power supply voltage exceeds the second limit voltage, the central processing unit is disabled from exercising control of the apparatus. When the power supply voltage returns within the second limit voltage, the central processing unit is enabled to exercise control over the apparatus. When the power supply voltage returns within the first limit voltage, the transmitter is enabled to radiate signals and the central processing unit reestablishes communication using the sheltered data.
    Type: Grant
    Filed: June 23, 1983
    Date of Patent: April 2, 1985
    Assignee: Toshiba Corporation
    Inventors: Tatsuaki Sekigawa, Akio Gotoh, Syuitsu Tsutsumi, Kuniyoshi Marui, Naoto Honda