Patents by Inventor Sadafumi Hamashima

Sadafumi Hamashima 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).

  • Automotive information system and method of controlling the same, recording medium storing control program, disk playback apparatus, and semiconductor integrated circuit
    Patent number: 7130656
    Abstract: An automotive information system has a main unit including a CPU and component units connected to the main unit through a universal serial BUS (USB), such as a car audio system including a CD-ROM auto-changer, a security control system, and a telephone system. At least one of the USB-connected component device, e.g., the security control system and/or the telephone system, has a detecting unit that detects occurrence of an event such as illegal approach to the automobile or receipt of telephone call. The USB-connected component device also has a start signal transmitting unit that transmits a start signal to the main unit when occurrence of the event is detected by the detecting unit. The main unit has a start signal receiving unit and a power control unit that serves turn on the power supply to the main unit in response to the start signal received by the start signal receiving unit.
    Type: Grant
    Filed: November 20, 2001
    Date of Patent: October 31, 2006
    Assignee: Clarion Co., Ltd.
    Inventors: Hiroyuki Okagaki, Sadafumi Hamashima, Satoru Kanazawa, Nobuhiro Kurihara
  • Automotive audio system
    Patent number: 6785195
    Abstract: An automotive audio system includes a first unit for acquiring a sound signal to be reproduced, a second unit for controlling the first unit by means of a control signal and also reproducing the supplied sound signal, and a bus for establishing communication between the first unit and the second unit. The control signal and the sound signal are transferred in digital format between the first unit and the second unit via the bus.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: August 31, 2004
    Assignee: Clarion Co., Ltd.
    Inventors: Satoru Kanazawa, Sadafumi Hamashima
  • Automotive information system and method of controlling the same, recording medium storing control program, disk playback apparatus, and semiconductor integrated circuit
    Publication number: 20020032876
    Abstract: An automotive information system has a main unit including a CPU and component units connected to the main unit through a universal serial BUS (USB), such as a car audio system including a CD-ROM auto-changer, a security control system, and a telephone system. At least one of the USB-connected component device, e.g., the security control system and/or the telephone system, has a detecting unit that detects occurrence of an event such as illegal approach to the automobile or receipt of telephone call. The USB-connected component device also has a start signal transmitting unit that transmits a start signal to the main unit when occurrence of the event is detected by the detecting unit. The main unit has a start signal receiving unit and a power control unit that serves turn on the power supply to the main unit in response to the start signal received by the start signal receiving unit.
    Type: Application
    Filed: November 20, 2001
    Publication date: March 14, 2002
    Inventors: Hiroyuki Okagaki, Sadafumi Hamashima, Satoru Kanazawa, Nobuhiro Kurihara