Patents by Inventor Tohru Matsuno

Tohru Matsuno 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).

  • Record medium checking device including a circuit for recording a signal on a record medium from detected clock pulses and for selective frequency setting
    Patent number: 5592080
    Abstract: In a record medium checking device, a signal recorded on record medium is reproduced, then the absence of reproduced signal is detected. The device includes a reproducing means for reproducing the signal recorded on the record medium to output the reproduced signal, a discriminating means for comparing the reproduced signal with a reference signal to output a discriminating signal, a signal generating means for generating detecting clock pulses, and a counter to count the detecting clock pulses. The output of the counter is a check signal based on the discriminating signal.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: January 7, 1997
    Assignee: Otari Inc.
    Inventor: Tohru Matsuno