Pointer detection apparatus and pointer detection method
First Claim
1. A pointer detection apparatus, comprising:
- a conductor pattern including N number of first conductors numbered from 0 to {N−
1} disposed in a first direction and a plurality of second conductors disposed in a second direction which crosses the first direction;
a multi-frequency signal production circuit configured to produce a plurality of signals of different frequencies;
a first conductor selection circuit configured to selectively supply said signals of different frequencies produced by said multi-frequency signal production circuit, simultaneously, only to those first conductors Yn through Y{n+s} which are directly adjacent to each other,wherein, when {n+s+1}≦
{N−
1} or {n−
1}≧
0, simultaneously supplying, after a defined time interval, said signals of different frequencies only to those first conductors Y{n+1} through Y{n+s+1} or Y{n−
1} through Y{n+s−
1},wherein, when {n+s+1}>
{N−
1} or {n−
1}<
0, looping around to Y{0} instead of Y{n+s+1} or looping around to Y{N−
1} instead of Y{n−
1},wherein n is an integer and 0≦
n≦
{N−
1}, andwherein (s+1) is a total number of the first conductors to which said signals of different frequencies are simultaneously supplied;
a second conductor selection circuit configured to selectively receive detection signals from the plurality of second conductors; and
a signal detection circuit configured to detect signals of individual frequencies, corresponding to the signals of different frequencies produced by said multi-frequency signal production circuit, which are representative of coupling states at cross points between the first conductors and the second conductors, and are received from said second conductor selection circuit.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed herein is a pointer detection apparatus, including: a conductor pattern including a plurality of first conductors disposed in a first direction and a plurality of second conductors disposed in a second direction; a multi-frequency signal production circuit configured to produce a plurality of signals of different frequencies; a first conductor selection circuit configured to selectively supply the signals of different frequencies to those first conductors, between which N ones of the first conductors are interposed, N being a predetermined integer equal to or greater than 0; a second conductor selection circuit configured to selectively receive detection signals from the second conductors; and a signal detection circuit configured to obtain signals of individual frequencies, corresponding to the signals of different frequencies produced by the multi-frequency signal production circuit, which are representative of coupling states at cross points between the first conductors and the second conductors and are received from said second conductor selection circuit.
64 Citations
27 Claims
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1. A pointer detection apparatus, comprising:
-
a conductor pattern including N number of first conductors numbered from 0 to {N−
1} disposed in a first direction and a plurality of second conductors disposed in a second direction which crosses the first direction;a multi-frequency signal production circuit configured to produce a plurality of signals of different frequencies; a first conductor selection circuit configured to selectively supply said signals of different frequencies produced by said multi-frequency signal production circuit, simultaneously, only to those first conductors Yn through Y{n+s} which are directly adjacent to each other, wherein, when {n+s+1}≦
{N−
1} or {n−
1}≧
0, simultaneously supplying, after a defined time interval, said signals of different frequencies only to those first conductors Y{n+1} through Y{n+s+1} or Y{n−
1} through Y{n+s−
1},wherein, when {n+s+1}>
{N−
1} or {n−
1}<
0, looping around to Y{0} instead of Y{n+s+1} or looping around to Y{N−
1} instead of Y{n−
1},wherein n is an integer and 0≦
n≦
{N−
1}, andwherein (s+1) is a total number of the first conductors to which said signals of different frequencies are simultaneously supplied; a second conductor selection circuit configured to selectively receive detection signals from the plurality of second conductors; and a signal detection circuit configured to detect signals of individual frequencies, corresponding to the signals of different frequencies produced by said multi-frequency signal production circuit, which are representative of coupling states at cross points between the first conductors and the second conductors, and are received from said second conductor selection circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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-
25. A pointer method comprising:
-
a first step of producing a plurality of signals of different frequencies; a second step of selectively supplying the signals of different frequencies produced at the first step, simultaneously, only to those conductors, among a conductor pattern including N number of first conductors numbered from 0 to {N−
1} disposed in a first direction and a plurality of second conductors disposed in a second direction crossing the first direction, those conductors to which the signals of different frequencies are supplied being those first conductors Yn through Y{n+s} which are directly adjacent to each other, wherein n is an integer and 0≦
n≦
{N−
1}, and (s+1) is a total number of the first conductors to which said signals of different frequencies are simultaneously supplied;a third step of, when {n+s+1}≦
{N−
1} or {n−
1}≧
0, simultaneously supplying, after a defined time interval, the signals of different frequencies only to those first conductors Y{n+1} through Y{n+s+1}, or Y{N−
1} through Y{n+s−
1}, and when {n+s+1}>
{N−
1} or {n−
1}<
0, looping around to Y{0} instead of Y{n+s+1}, or looping around to Y{N−
1} instead of Y{n−
1};a fourth step of selectively switching those second conductors from which detection signals are received; and a fifth step of detecting signals of individual frequencies corresponding to the signals of the different frequencies produced at the first step, based on the detection signals supplied from the second conductors selected at the fourth step, wherein the signals of individual frequencies are representative of coupling states at cross points between the first conductors and the second conductors. - View Dependent Claims (26, 27)
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Specification