Position control apparatus
First Claim
Patent Images
1. A position control apparatus comprising:
- first storage means for storing display information;
a pointing device for identifying for display a portion of the display information stored in said first storage means by moving freely on a plane;
detection means for detecting a vector of movement of said pointing device;
calculation means for calculating a velocity of movement from the vector of movement detected by said detection means;
discrimination means, responsive to at least one parameter of said vector, for discriminating whether the vector of movement of said pointing device detected by said detection means is indicative of a valid direction of movement thereof;
second storage means for storing the velocity of movement calculated by said calculation means when said discrimination means discriminates that the direction of movement can be determined from said vector of movement; and
control means for moving the portion identified for display at a velocity corresponding to the velocity stored in said second storage means even when the movement of said pointing device is stopped.
1 Assignment
0 Petitions
Accused Products
Abstract
A position control apparatus comprises a pointing device for pointing a position, a microprocessor for computing a distance of movement and a velocity of movement of the pointing device controls moving the position pointed by the pointing device at a velocity corresponding to the velocity detected when the distance of movement and the velocity of movement detected exceed predetermined values.
-
Citations
17 Claims
-
1. A position control apparatus comprising:
-
first storage means for storing display information; a pointing device for identifying for display a portion of the display information stored in said first storage means by moving freely on a plane; detection means for detecting a vector of movement of said pointing device; calculation means for calculating a velocity of movement from the vector of movement detected by said detection means; discrimination means, responsive to at least one parameter of said vector, for discriminating whether the vector of movement of said pointing device detected by said detection means is indicative of a valid direction of movement thereof; second storage means for storing the velocity of movement calculated by said calculation means when said discrimination means discriminates that the direction of movement can be determined from said vector of movement; and control means for moving the portion identified for display at a velocity corresponding to the velocity stored in said second storage means even when the movement of said pointing device is stopped. - View Dependent Claims (2, 3)
-
-
4. A position control apparatus comprising:
-
first storage means for storing display information; a pointing device for identifying for display a portion of the display information stored in said first storage means by moving freely on a plane; detection means for detecting a distance of movement of said pointing device; discrimination means, responsive to the distance of movement detected by said detecting means, for discriminating whether the distance of movement of said pointing device detected by said detection means is indicative of a valid direction of movement thereof; calculation means for calculating a velocity of movement from the distance of movement of said pointing device detected by said detection means; second storage means for storing the velocity of movement calculated by said calculation means; and control means for moving the portion identified for display by said pointing device at a velocity corresponding to the velocity of movement stored in said second storage means even when the movement of said pointing device is stopped. - View Dependent Claims (5, 6, 7)
-
-
8. A position control apparatus comprising:
-
first storage means for storing display information; a pointing device for identifying for display a portion of the display inforamtion stored in said storage means by moving freely on a plane; detection means for detecting a distance of movement of said pointing device; calculation means for calculating a velocity of movement from the distance of movement of said pointing device detected by said detection means; discrimiantion means, responsive to the distance of movement detected by said detection means, for discriminating whether the distance of movement of said pointing device detected by said detection means is indicative of a valid direction of movement thereof; second storage means for storing the velocity of movement calculatd by said calculation means; first control means for moving the portion identified for display by said pointing device at a velocity corresponding to the velocity of movement stored in said second storage device even when the movement of said pointing device is stopped; and second control means for changing the velocity of movement stored in said second storage means. - View Dependent Claims (9, 10, 11, 12)
-
-
13. A position control apparatus comprising:
-
storage means for storing display information; a pointing device for identifying for display a portion of the display information by moving on a plane; detection means for detecting a vector of movement of said pointing device; discrimination means, responsive to at least one parameter of said vector, for discriminating whether the vector of movement of said pointing device detected by said detection means is indicative of a valid direction of movement thereof; moving means for moving the portion identified for display by said pointing device in accordance with the direction of the vector of movement detcted by said detection means even when the movement of said pointing device is stopped; and control means for stopping the movement of the portion identified for display by said moving means when said detection means detects a vector of movement having a substantially opposite direction to that of said vector of movement. - View Dependent Claims (14, 15, 16, 17)
-
Specification