Patents by Inventor Shuji Yamasaki

Shuji Yamasaki 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: 8286489
    Abstract: Disclosed is an input apparatus including a coplanar line formed on the surface of a substrate so as to pass through the vicinity of a position at which a user performs an operation, terminating resistor placed at one end of the coplanar line and a microcomputer module at the other end. The microcomputer module has a signal transmitter for outputting a signal to the coplanar line. When the user operates a key, the impedance of the coplanar line changes and a reflected wave is produced. A signal detector in the microcomputer module detects the reflected wave and outputs received-signal strength information, which indicates the strength of the signal included in the reflected wave, to a computing unit. Based upon the received-signal strength information and strength of the signal that has been output by the signal transmitter, the computing unit in the microcomputer module discriminates the key that has been operated and specifies the entered instruction.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: October 16, 2012
    Assignee: NEC Corporation
    Inventor: Shuji Yamasaki
  • Publication number: 20090013788
    Abstract: Disclosed is an input apparatus including a coplanar line formed on the surface of a substrate so as to pass through the vicinity of a position at which a user performs an operation, terminating resistor placed at one end of the coplanar line and a microcomputer module at the other end. The microcomputer module has a signal transmitter for outputting a signal to the coplanar line. When the user operates a key, the impedance of the coplanar line changes and a reflected wave is produced. A signal detector in the microcomputer module detects the reflected wave and outputs received-signal strength information, which indicates the strength of the signal included in the reflected wave, to a computing unit. Based upon the received-signal strength information and strength of the signal that has been output by the signal transmitter, the computing unit in the microcomputer module discriminates the key that has been operated and specifies the entered instruction.
    Type: Application
    Filed: March 26, 2007
    Publication date: January 15, 2009
    Inventor: Shuji Yamasaki
  • Patent number: 6609933
    Abstract: To provide a shield connector which effectively suppresses cross-talk. The shield connector includes a plural number of contact units, mounted side-by-side in a housing, for arraying and holding a plural number of terminals at optimum positions by insulating member(s), electrically conductive shield plates, mounted to the insulating member of the contact unit, for extending to the vicinity of foremost portions of the terminals with a spacing from the terminals, and one or more electrically conductive contact pieces extending from a surface of the shield plate towards the terminals so as to be pressure-contacted with one or more of the terminals.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: August 26, 2003
    Assignee: NEC Tokin Iwate, Ltd.
    Inventor: Shuji Yamasaki
  • Publication number: 20030008562
    Abstract: To provide a shield connector which effectively suppresses cross-talk. The shield connector includes a plural number of contact units, mounted side-by-side in a housing, for arraying and holding a plural number of terminals at optimum positions by insulating member(s), electrically conductive shield plates, mounted to the insulating member of the contact unit, for extending to the vicinity of foremost portions of the terminals with a spacing from the terminals, and one or more electrically conductive contact pieces extending from a surface of the shield plate towards the terminals so as to be pressure-contacted with one or more of the terminals.
    Type: Application
    Filed: July 3, 2002
    Publication date: January 9, 2003
    Applicant: NEC Tokin Iwate, Ltd.
    Inventor: Shuji Yamasaki
  • Patent number: 6328602
    Abstract: A connector includes signal sockets, and ground sockets. The signal sockets and the ground sockets are made of electrically conductive material and alternately arranged in a column direction and a row direction. Each of the signal sockets includes a contact lead section for an external signal lead to be connected, and a base section connected to the contact lead section of the signal socket. Also, each of the ground sockets includes a contact lead section for an external ground lead to be connected, a first extending section extending between one of the signal sockets which is arranged adjacent to the ground socket and one of two of the signal sockets which are arranged adjacent to the ground socket obliquely from the one signal socket, and a base section connected to the contact lead section of the ground socket and the first extending section. Here, the first extending section of the ground socket shields electromagnetic wave from the one signal socket to the one of the two signal sockets.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: December 11, 2001
    Assignee: NEC Corporation
    Inventors: Shuji Yamasaki, Kazuya Kikuchi
  • Patent number: 6210227
    Abstract: In order to prevent problems such as crosstalk generated in a connector for connecting en bloc a plurality of signal terminals, there is provided a new connector. In this connector, a plurality of ground terminals are disposed so as to surround the signal terminals and the ground terminal is provided with a plate-type sealed beam 8a extending toward the connecting top end, a main beam formed in the crossing direction to the sealed beam, and a sub-beam. Since the ground terminals are F-shaped and since the ground terminal is provided with a sealed beam, the electromagnetic waves emitted from the signal terminal can be effectively shielded.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: April 3, 2001
    Assignee: NEC Corporation
    Inventors: Shuji Yamasaki, Yoshihiro Kuroi
  • Patent number: 5827087
    Abstract: A cable connector in the form of a single flat metal plate and capable of stably connecting a cable consisting of a core and a covering is disclosed. The cable connector connects a cable stably over a long period of time without regard to the diameter of the cable by using the same jig and the same connecting method.
    Type: Grant
    Filed: February 19, 1997
    Date of Patent: October 27, 1998
    Assignee: NEC Corporation
    Inventor: Shuji Yamasaki