Position detector and position indicator
First Claim
1. A method of establishing bi-directional communication between a position indicator and a position detecting sensor, comprising:
- transmitting a first signal from a tip transmitter/receiver provided at a tip end of an elongate body of the position indicator, wherein the first signal is indicative of a position of the tip end;
transmitting a second signal from a proximal transmitter/receiver provided at a proximal end of the elongate body of the position indicator, wherein the second signal is indicative of a position of the proximal end;
receiving, by at least one of the tip receiver and the proximal receiver of the position indicator, a sensor signal outputted from the position detecting sensor during a time period in which neither the first signal nor the second signal is transmitted; and
selecting between the transmitting of the first signal and the transmitting of the second signal based on reception of the sensor signal.
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Abstract
A position indicator is provided, which includes a pressure sensor configured to detect a pressure applied to a tip of the position indicator. The position indicator further includes a storage configured to store the pressure as one type of digital data and to store at least one other type of digital data. The position indicator also includes a receiver configured to receive a command signal transmitted from a position sensor, and a control circuit configured to select one or more types of digital data in the storage based on the command signal. The position indicator includes a transmitter configured to transmit the selected one or more types of digital data to the position sensor.
168 Citations
21 Claims
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1. A method of establishing bi-directional communication between a position indicator and a position detecting sensor, comprising:
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transmitting a first signal from a tip transmitter/receiver provided at a tip end of an elongate body of the position indicator, wherein the first signal is indicative of a position of the tip end; transmitting a second signal from a proximal transmitter/receiver provided at a proximal end of the elongate body of the position indicator, wherein the second signal is indicative of a position of the proximal end; receiving, by at least one of the tip receiver and the proximal receiver of the position indicator, a sensor signal outputted from the position detecting sensor during a time period in which neither the first signal nor the second signal is transmitted; and selecting between the transmitting of the first signal and the transmitting of the second signal based on reception of the sensor signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A pen-shaped position indicator, comprising:
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an elongate body having a tip end and a proximal end; a tip transmitter/receiver provided at the tip end; a proximal transmitter/receiver provided at the proximal end; a control circuit configured to selectively transmit a first signal from the tip transmitter/receiver and a second signal from the proximal transmitter/receiver, respectively, wherein the first signal is indicative of a position of the tip end and the second signal is indicative of a position of the proximal end; and a power source; wherein the control circuit receives, via at least one of the tip receiver and the proximal receiver, a sensor signal outputted from a position detecting sensor during a time period in which neither the first signal nor the second signal is transmitted; and wherein the control circuit selects between the transmission of the first signal and the transmission of the second signal based on reception of the sensor signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification