The purpose of the present invention is to reduce power consumption caused by
controlling circuit in transmitting/receiving process between tablet system and
cord less-battery less pointer apparatus. The present invention provides multi-channel
switches set produced in semi-conductor process to replace traditional analog switch
and tri-state element used in prior art as signal transmitting/receiving selector
of inductive loops of tablet, which can simplify controlling circuit, enhance power
efficiency of signal transmitting/receiving between tablet system and cord less
and cell less pointer apparatus, and increase speed of response of signal transmitting/receiving
between tablet and cord less-battery less pointer apparatus.
