Pen-shaped coordinate pointing device
First Claim
1. A pen-shaped coordinate pointing device that indicates a position to be measured and an operation by an operator to a position detecting device for measuring the position, said pen-shaped coordinate pointing device comprising:
- a coil wound on a core having an end face with no opening; and
a magnetic member placed along the axis of said coil so as to oppose an end face of said core, wherein said core and said magnetic member are spaced from each other and are moved closer together in response to the operation by the operator.
1 Assignment
0 Petitions
Accused Products
Abstract
In an input pen having a pen-shaped casing, a ferrite core with a coil wound thereon and a ferrite chip are placed opposed to each other with an O-ring therebetween. The ferrite chip has a projection. When the input pen is operated, the projection and the ferrite core are moved closer together. When the ferrite chip is moved closer to the ferrite core during operation, the projection is placed substantially close to the ferrite core. Therefore, high responsivity is ensured without moving the ferrite chip into the coil, and there is no need to form an opening or a cavity in the ferrite core.
54 Citations
14 Claims
-
1. A pen-shaped coordinate pointing device that indicates a position to be measured and an operation by an operator to a position detecting device for measuring the position, said pen-shaped coordinate pointing device comprising:
-
a coil wound on a core having an end face with no opening; and
a magnetic member placed along the axis of said coil so as to oppose an end face of said core, wherein said core and said magnetic member are spaced from each other and are moved closer together in response to the operation by the operator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A pen-shaped coordinate pointing device that indicates a position to be measured and an operation by an operator to a position detecting device for measuring the position, said pen-shaped coordinate pointing device comprising:
-
a coil wound around a core; and
a magnetic member placed along the axis of said coil so as to oppose an end face of said core, wherein said core and said magnetic member are spaced from each other and are moved closer together in response to the operation by the operator.
-
Specification