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Data processing device

  • US 8,390,573 B2
  • Filed: 04/26/2010
  • Issued: 03/05/2013
  • Est. Priority Date: 04/26/2010
  • Status: Active Grant
First Claim
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1. A data input device comprising:

  • (a) a body having a rearward face and a forward face;

    (b) a display located on the forward face of the body;

    (c) a first key located on the rearward face of the body;

    (d) a first map point displayed on the display, the first map point configured to indicate the location of the first key;

    (e) a second key located on the rearward face of the body;

    (f) a second map point displayed on the display, the second map point configured to indicate the location of the second key;

    (g) a an input field displayed on the display;

    (h) wherein the first map point is a ghost image;

    (i) wherein the first key is depressible to a first position, in which the first key is not fully depressed, and a second position, which is more depressed than the first position;

    (j) a non-transitory computer readable program code, encoded in a computer-readable medium executed by the data input device, the program code comprising;

    (i) program code for identifying the depression of the first key to the first position;

    (ii) program code for displaying the map point on the display in response to the depression of the first key to the first position;

    (iii) program code for identifying the depression of the first key to the second position;

    (iv) program code for generating a first predetermined alphanumeric character on the display in response to selection of the input field and the depression of the first key to the second position;

    (v) program code for identifying the depression of the second key;

    (vi) program code for generating a second predetermined alphanumeric character on the display in response to the depression of the second key; and

    (k) wherein the ghost image is adjustable in intensity.

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