Stylus detection system having touch object detecting mode and stylus detecting mode

A stylus detecting system, comprising:

• a sense array including N number of first lines and M number of second lines crossing the N number of first lines, wherein N and M are positive integers greater than 0;
• and
• a touch controller connected to the sense array and configured to:
• (i) in a touch object detecting mode, drive the N number of first lines as transmission (TX) lines with a finger sensing TX signal and measure reception (RX) signals on the M number of second lines as RX lines, and
• (ii) in a stylus detecting mode, measure a stylus TX signal transmitted by a stylus, on both the N number of first lines and the M number of second lines, using # number of multiple RX channels (#RX channels), wherein # is a positive integer greater than 0, to sense more than one line of the N number of first lines and the M number of second lines at the same time, such that a stylus scanning time is reduced as compared to using a single RX channel to scan all lines, thereby completing a stylus scan in fewer total scans.