Method of transmitting transmission data from sensor controller to pen, and pen

Abstract

An integrated circuit for controlling operation of a pen includes an input circuit configured to receive a signal corresponding to a pulse signal transmitted from a sensor electrode group of a sensor. The integrated circuit includes an analog processing circuit configured to detect edges of the signal and to output an edge-detected signal. The integrated circuit includes a pattern storage configured to store a plurality of chip sequences as known patterns. The integrated circuit includes a digital processing circuit configured to perform a correlation operation between the edge-detected signal and the known patterns to recognize transmission data of the pulse signal. The pulse signal is transmitted using a main signal and a sub signal so as to enhance edges of the pulse signal.

Dependencies are inferred from the claim text.