| 摘要 |
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. |
| 主权项 |
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. |
