When there exist two X coils that generate voltages of the same values during the X coil-scan operation (yes in S314), the CPU 56 discards the position coordinate table 58a that is already stored in the work area, and reloads a new position coordinate table 58a from the ROM 58, and then stores the position coordinate table 58a in association with the pen attribute data that is detected in S310. Then, the CPU 58 calculates a ratio r between the detected value d and the reference value g in S318, and multiplies, with the ratio r, each voltage difference value DIFF in the reloaded position coordinate table 58a in S320. As a result, the position coordinate table 58a is corrected in correspondence with the lowering of the output level of the alternating magnetic field of the pen 60. The CPU then calculates the X coordinate based on the corrected position coordinate table 58a.
CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part application of U.S. patent application Ser. No. 09/628,724 entitled "Coordinate Reading Devices" and filed on Jul. 28, 2000.
Priority Data
Jul 29, 1999 [JP] P11-215390 Jul 29, 1999 [JP] P11-215392 Aug 06, 1999 [JP] P11-223530 Sep 16, 1999 [JP] P11-261596 Nov 09, 1999 [JP] P11-317788 Nov 15, 1999 [JP] P11-323476 Nov 15, 1999 [JP] P11-323482
Relating to input devices and electronic devices generating a signal corresponding to a position depressed on their input domain, an input device and an electronic device are capable of performing an easy correction. The input device generates the signal corresponding to the position depressed on its input domain, and contains a correction domain and a correction unit. The correction domains are set in several positions in a periphery of and different from the input domain. Based on the signal corresponding to the position depressed on the correction domain, the correction unit corrects the signal corresponding to the position depressed on the input domain.
A multi-induction loop layout of an electromagnetic inductive system is disclosed. The multi-induction loop layout of the invention comprises a plurality of inductive loops, one terminal of each inductive loop connecting to a loop switch, and the other terminal connecting to the common node. Every logical inductive loop is a relative close inductive loop, the relative close inductive loop possessing a plurality of -type sections, forming a sawtooth-shaped region and corresponding to and closing each other to form a plurality of close-like regions. The form of which gradually approaches the multi-induction loop layout.
