Patent ID: 9459726
Filing Date: 2016-10-04
CPC Classification: G06F

Claim Text:
1. A position detector comprising: a position indicator including a signal generator, the signal generator being configured to continuously transmit a detection signal to a tablet as a position signal and to intermittently transmit the detection signal to the tablet as a non-positional signal, the position indicator further including an amplifying circuit and a switch configured to activate the amplifying circuit in synchronization with completion of each continuous transmission of the detection signal as the position signal and to deactivate the amplifying circuit after a fixed period of time; and the tablet configured to determine a position on its surface pointed to by said position indicator by detecting the continuously-transmitted detection signal, and to determine non-positional information regarding the position indicator by detecting the intermittently-transmitted detection signal, wherein said position indicator further includes position indicator control circuitry configured to control the position indicator to: (i) receive, during said fixed period of time, an indicator control signal via the signal generator from said tablet and amplify the received indicator control signal via the amplifying circuit selectively activated by the switch and deactivate the amplifying circuit after said fixed period of time, and (ii) based on the received and amplified indicator control signal, select one type of non-positional information from among multiple types of non-positional information regarding the position indicator, and (iii) transmit the selected one type of non-positional information regarding the position indicator as the non-positional signal to said tablet via the signal generator, wherein said tablet includes tablet control circuitry configured to control the tablet to: (a) continuously receive the detection signal from said position indicator to determine the positional information and to intermittently receive the detection signal from said position indicator to determine the non-positional information, and (b) determine a timing at which the continuous transmission of the detection signal is completed, and (c) transmit, during said fixed period of time, the indicator control signal to said position indicator synchronously with the determined timing.