发明名称 |
Approach position input device |
摘要 |
An approach position input device includes a plurality of antennas arranged in the form of a lattice. An oscillator applies a high-frequency ac voltage to the antennas. A signal processing circuit processes signals from the antennas. A change-over switch including switching elements sequentially changes over a connection between the antennas and the signal processing circuit. CPU sends a selection signal to the change-over switch for antenna selection. CPU calculates an approach position of a human body according to signals from the signal processing circuit. CPU instructs the change-over switch to apply the ac voltage from the oscillator only to the antenna selected according to the selection signal.
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申请公布号 |
US2005206565(A1) |
申请公布日期 |
2005.09.22 |
申请号 |
US20040023587 |
申请日期 |
2004.12.29 |
申请人 |
OSAKA TADASHI;YOSHIDA TAKASHI;YOSHIDA KAZUSHI;ICHINOSE RYOKO |
发明人 |
OSAKA TADASHI;YOSHIDA TAKASHI;YOSHIDA KAZUSHI;ICHINOSE RYOKO |
分类号 |
G06F3/044;G01S13/00;G06F3/03;(IPC1-7):G01S13/00 |
主分类号 |
G06F3/044 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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