Semiconductor device and position detecting method using the semiconductor device
First Claim
1. A semiconductor device comprising:
- an antenna circuit receiving signals from a plurality of interrogators;
a signal sorting portion for sorting the signals from the plurality of interrogators; and
a signal detecting portion for detecting intensity of the signals sorted by the signal sorting portion.
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Accused Products
Abstract
An object of the present invention is to solve a problem of a conventional semiconductor device in that although information such as whether the semiconductor device exists in a predetermined space and information on an ID and the like included in the semiconductor device can be obtained, a position where the semiconductor is located in the predetermined space cannot be identified. The semiconductor device includes a signal sorting portion which sorts a signal based on a signal output from the outside and a signal detecting portion for detecting the signal output from the outside. In a structure of the semiconductor device including the signal sorting portion and the signal detecting portion, a position detecting system is developed base on signals from a plurality of interrogators.
35 Citations
17 Claims
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1. A semiconductor device comprising:
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an antenna circuit receiving signals from a plurality of interrogators; a signal sorting portion for sorting the signals from the plurality of interrogators; and a signal detecting portion for detecting intensity of the signals sorted by the signal sorting portion. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A position detecting method for detecting position information of a semiconductor device, comprising the steps of:
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receiving signals from a plurality of interrogators by an antenna circuit; sorting the signals received by the antenna circuit by a signal sorting portion; detecting intensity of the signal sorted by the signal sorting portion by a signal detecting portion; and detecting intensity of signals from the plurality of interrogators and transmitting information on the intensity of the signals from the plurality of interrogators to one of the plurality of interrogators. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A semiconductor device comprising:
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an antenna circuit receiving signals; a signal sorting portion for sorting at least a first signal and a second signal received by the antenna circuit; and a signal detecting portion for detecting intensity of signals sorted by the signal sorting portion. - View Dependent Claims (14)
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15. A driving method of a semiconductor device, comprising the steps of:
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receiving signals by an antenna circuit; sorting at least of a first signal and a second signal received by the antenna circuit by a signal sorting portion; detecting intensity of the signals sorted by the signal sorting portion by a signal detecting portion; and transmitting information on the intensity of the signals detected by the signal detecting portion. - View Dependent Claims (16)
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17. A semiconductor device comprising:
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an antenna circuit; an oscillation circuit; a frequency mixer where signals received by the antenna circuit and a signal output from the oscillation circuit are input into; a bandpass filter; a rectifier circuit where the signal output from the frequency mixer is input into through the band pass filter; an A/D conversion circuit where a voltage output from the rectifier circuit is input into; a central processing unit where a signal output from the A/D conversion circuit is input into; and an oscillation frequency control circuit where a signal output from the central processing unit is input into, wherein the oscillation frequency control circuit controls a oscillation frequency of the oscillation circuit.
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Specification