×

Portable transceiver

  • US 5,060,152 A
  • Filed: 02/01/1989
  • Issued: 10/22/1991
  • Est. Priority Date: 09/30/1986
  • Status: Expired due to Term
First Claim
Patent Images

1. A portable terminal device adapted to be carried to a site and to perform transaction operations by transmitting and receiving data to and from a central unit, said portable terminal device including(A) memory means for storing transaction defining data;

  • (b) input means for inputting transaction defining data into said memory;

    (C) control means coupled to said memory means for determining(i) when sufficient transaction defining data is stored in said memory means for a transaction and said terminal device is in a transaction ready state, and(ii) when insufficient transaction defining data is stored in said memory means for a transaction and said terminal device is in a transaction inhibit state;

    (d) modem means for transmitting transaction defining data over a telephone line;

    (e) transaction means coupled to said memory means and said modem means for transmitting selected transaction defining data stored in said memory means through said modem means over telephone lines to said central unit when said control means determined said terminal device is in said transaction ready state;

    (f) a screen movable between at least two operative positions,(i) a first stored position for transport of said terminal device, and(ii) a second display position;

    (g) an optical system for projecting images of said transaction defining data onto said screen when said screen is in said display position;

    (h) means coupling said control means to said optical system for transferring transaction defining data from said memory means to said optical system for display on said screen; and

    ,(i) a common portable housing for said memory means, input means, control means, modem means, transaction means, screen, optical system, and coupling means.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×