US 6,307,542 B1 · Magnet-based information input apparatus

Abstract

Information is inputted easily and conveniently on a writing board. A sheet member, which is provided with a map and attributed magnet-accommodating areas, is attached onto a magnetic plate provided with coils wound therearound at constant intervals in the vertical direction and in the horizontal direction to provide the writing board. Induced electromotive force-detecting sections are provided to detect the induced electromotive forces of the respective coils. When a magnet is detached, a detachment position is specified from the induced electromotive forces generated in the respective coils. When the magnet is stuck, a sticking position is specified from the induced electromotive forces generated in the respective coils. The position and the attribute are incorporated into a personal computer.

Claims15

Dependent claims

A magnet-based information input apparatus comprising:

a magnetic plate provided with a plurality of coils wound therearound in a vertical direction and in a horizontal direction;
induced electromotive force-detecting sections connected to said plurality of coils respectively;
and
a magnet position-determining section to which outputs of said induced electromotive force-detecting sections are supplied, wherein:
when a magnet is stuck on said magnetic plate, a sticking coordinate position of said magnet is determined by using said magnet position-determining section on the basis of said outputs of said induced electromotive force-detecting sections.

2 more elements

A magnet-based information input apparatus comprising:

a magnetic plate provided with a plurality of coils wound therearound in a vertical direction and in a horizontal direction;
induced electromotive force-detecting sections connected to said plurality of coils respectively;
and
a magnet position-determining section to which outputs of said induced electromotive force-detecting sections are supplied, wherein:
when a magnet is stuck on said magnetic plate, a sticking coordinate position of said magnet is determined by using said magnet position-determining section on the basis of said outputs of said induced electromotive force-detecting sections;
and
when said magnet is detached from said magnetic plate, a detachment coordinate position of said magnet is determined by using said magnet position-determining section on the basis of said outputs of said induced electromotive force-detecting sections.

4 more elements

Dependencies are inferred from the claim text.

Magnet-based information input apparatus

Life of this patent

Magnet-based information input apparatus

Life of this patent

Abstract

Claims15