Patents by Inventor Mamoru Kajinami

Mamoru Kajinami 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).

  • Data transfer apparatus with automatic transmission rate adjustment
    Patent number: 5680596
    Abstract: A data transfer apparatus includes a computer-side input and output unit for transmitting a data signal which is periodically updated, and a printer-side input and output unit for receiving the data signal transmitted from the computer-side input and output unit and detecting the logic level of the data signal. Particularly, this data transfer apparatus further includes a state transition time measuring circuit, a computer-side CPU, and a printer-side CPU cooperated to transmit a transition test data signal from the computer-side input and output unit in a tuning mode, measure the transition time of the transition test data signal received by the printer-side input and output unit, and adjust transfer parameters which define the transmission rate of the data signal to be transmitted from the computer-side input and output unit and a timing for detecting the logic level of the data signal, on the basis of a result of measurement.
    Type: Grant
    Filed: August 29, 1995
    Date of Patent: October 21, 1997
    Assignees: International Business Machines Corporation, Advanced Peripherals Technologies, Inc.
    Inventors: Shinji Iizuka, Mamoru Kajinami, Tetsuo Kanno