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Apparatus and method for data-processing

  • US 6,771,280 B2
  • Filed: 02/04/2003
  • Issued: 08/03/2004
  • Est. Priority Date: 02/06/2002
  • Status: Expired due to Term
First Claim
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1. A data-processing apparatus comprising:

  • (a) a flat coordinate-input unit for inputting coordinates;

    (b) a coordinate-information acquiring unit for acquiring coordinate information including a coordinate input from the flat coordinate-input unit;

    (c) a coordinate-information storage unit for storing in sequence the coordinate information;

    (d) an angle-calculator for calculating an angle defined by a first displacement-vector and a second displacement-vector, in which, i) the first displacement-vector represents a displacement from a second coordinate given by a second coordinate information to a first coordinate given by first coordinate information, the second displacement-vector represents a displacement from a third coordinate given by a third coordinate information to the second coordinate, and ii) the first coordinate information is a newest information, the second coordinate information is second newest information, and the third coordinate information is third newest information, stored into the coordinate storage unit;

    (e) a scroll-information generator for generating scroll information by determining a direction of scrolling based on the angle calculated by the angle-calculator and an amount of scrolling derived from the first-displacement vector; and

    (f) a scroll unit for performing scroll according to the scroll information.

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