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Data processing system, and keypad assembly for inputting data in such system

  • US 4,970,672 A
  • Filed: 01/25/1989
  • Issued: 11/13/1990
  • Est. Priority Date: 01/25/1989
  • Status: Expired due to Fees
First Claim
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1. A data processing system for analyzing data contained on or visible through a two dimensional surface, comprising:

  • (a) a digital computer; and

    (b) a keypad assembly for inputting alpha-numeric data into said digital computer, said keypad assembly comprising;

    (i) a housing having a substantially flat bottom surface and sized such that it may be manually grasped and moved by hand over a flat two dimensional surface in any direction on which said housing is supported by said housing flat bottom surface;

    (ii) a viewing port formed in said housing comprising a transparent viewing window enabling data contained on or visible through said two dimensional surface when in sliding contact with said housing bottom surface to be seen through said transparent viewing window; and

    (iii) a keypad secured and positioned in said housing at a location proximate but offset from said transparent viewing window, including;

    (a) a plurality of manually actuatable keys for entering alpha-numeric data;

    (b) signal processing means within said housing adapted when a selected key is pressed to generate selected alpha-numeric data dependent upon which key is pressed, said selected alpha-numeric data corresponding to data contained on or visible through said two dimensional surface; and

    (c) signal transmitting means operatively connecting in signal in signal transmission relationship said keypad keys to said digital computer enabling each respective key when actuated to send to said digital computer the said selected alpha-numeric data corresponding to the key pressed.

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