Patents by Inventor Charles J. Hofstetter

Charles J. Hofstetter 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).

  • Portable point of sale terminal
    Patent number: 5408078
    Abstract: A point of sale terminal is disclosed that provides all of the usual point of sale terminal functions, but that is entirely field portable. Data pertinent to each purchase can be input to the terminal via a keyboard assembly, a touch-screen display or a signature-capture screen assembly, or via an antenna and radio link from an associated bar code scanner. Data may be communicated at any time to a remote host computer, also via a separate antenna and radio link. The communication links with the host computer and the bar code scanner operate independently and simultaneously, using mutually compatible modulation schemes such as a spread spectrum scheme for the host computer link and a narrowband or spread spectrum scheme for the bar code scanner link. The terminal thereby functions as a portable repeater or node in a data communications network.
    Type: Grant
    Filed: April 25, 1994
    Date of Patent: April 18, 1995
    Assignee: Telxon Corporation
    Inventors: James A. Campo, Fred J. Anderson, Donald M. Embree, Charles J. Hofstetter, Donald I. Sloan
  • Portable point of sale terminal
    Patent number: 5408077
    Abstract: A point of sale terminal is disclosed that provides all of the usual point of sale terminal functions, but that is entirely field portable. Data pertinent to each purchase can be input to the terminal via a keyboard assembly, a touch-screen display or a signature-capture screen assembly, or via an antenna and radio link from an associated bar code scanner. Data may be communicated at any time to a remote host computer, also via a separate antenna and radio link. The communication links with the host computer and the bar code scanner operate independently and simultaneously, using mutually compatible modulation schemes such as a spread spectrum scheme for the host computer link and a narrowband or spread spectrum scheme for the bar code scanner link. The terminal thereby functions as a portable repeater or node in a data communications network.
    Type: Grant
    Filed: April 25, 1994
    Date of Patent: April 18, 1995
    Assignee: Telxon Corporation
    Inventors: James A. Campo, Fred J. Anderson, Donald M. Embree, Charles J. Hofstetter, Donald I. Sloan
  • Portable point of sale terminal
    Patent number: 5334821
    Abstract: A point of sale terminal is disclosed that provides all of the usual point of sale terminal functions, but that is entirely field portable. Data pertinent to each purchase can be input to the terminal via a keyboard assembly, a touch-screen display or a signature-capture screen assembly, or via an antenna and radio link from an associated bar code scanner. Data may be communicated at any time to a remote host computer, also via a separate antenna and radio link. The communication links with the host computer and the bar code scanner operate independently and simultaneously, using mutually compatible modulation schemes such as a spread spectrum scheme for the host computer link and a narrowband or spread spectrum scheme for the bar code scanner link. The terminal thereby functions as a portable repeater or node in a data communications network.
    Type: Grant
    Filed: July 16, 1992
    Date of Patent: August 2, 1994
    Assignee: Telxon Corporation
    Inventors: James A. Campo, Fred J. Anderson, Donald M. Embree, Charles J. Hofstetter, Donald I. Sloan
  • Handheld computer with built-in bar code scanner
    Patent number: D340034
    Type: Grant
    Filed: June 14, 1991
    Date of Patent: October 5, 1993
    Assignee: Telxon Corporation
    Inventors: Charles J. Hofstetter, Robert F. Meyerson