Patents by Inventor Tatsuro Shirai

Tatsuro Shirai 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).

  • Headphone with cord winder devices
    Patent number: 7372974
    Abstract: The present invention provides a headphone with cord winder devices that are capable of winding up a bridging cord between one (left) headphone assembly and the other (right) headphone assembly. The headphone comprises one (left) headphone assembly accommodating, in one (left) headphone housing corresponding to one of the left and right ear, a speaker and a cord winder device for winding up an input cord for connecting to audio-video equipment; and the other (right) headphone assembly accommodating, in the other (right) headphone housing corresponding to the other of the left and right ear, a speaker and a cord winder device for winding up a bridging cord for bridging the left headphone housing and the right headphone housing.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: May 13, 2008
    Assignee: Victor Company of Japan, Limited
    Inventors: Yuuji Yanagishita, Masaaki Tanaka, Fumio Usui, Tatsuro Shirai
  • Headphone with cord winder devices
    Publication number: 20050058316
    Abstract: The present invention provides a headphone with cord winder devices that are capable of winding up a bridging cord between one (left) headphone assembly and the other (right) headphone assembly. The headphone comprises one (left) headphone assembly accommodating, in one (left) headphone housing corresponding to one of the left and right ear, a speaker and a cord winder device for winding up an input cord for connecting to audio-video equipment; and the other (right) headphone assembly accommodating, in the other (right) headphone housing corresponding to the other of the left and right ear, a speaker and a cord winder device for winding up a bridging cord for bridging the left headphone housing and the right headphone housing.
    Type: Application
    Filed: September 7, 2004
    Publication date: March 17, 2005
    Inventors: Yuuji Yanagishita, Masaaki Tanaka, Fumio Usui, Tatsuro Shirai
  • Apparatus and method for recording and reproducing a digital signal
    Patent number: 4901168
    Abstract: A digital signal recording and reproducing apparatus for recording an input digital signal on a recording medium to reproduce it therefrom, comprising first means for recording the same identification code as an identification number particular to the digital signal recording and reproducing apparatus when the input digital signal has a specified sampling frequency at the time of recording, and second means for reproducing the recorded identification code at the time of reproduction, thus permitting the digital signal recorded on the recording medium to be reproduced only when the reproduced identification code is coincident with the identification number particular to the apparatus.
    Type: Grant
    Filed: April 11, 1988
    Date of Patent: February 13, 1990
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Shiro Yoshida, Tatsuro Shirai, Satoru Nagashima