Ink annotation sharing method and system

Abstract

An electronic book terminal includes a display device capable of displaying an electronic book; a touch sensor that detects a finger; a pen sensor that detects a pen; and an integrated circuit, which is coupled to the display device, the touch sensor and the pen sensor. The integrated circuit, in operation: displays text of the electronic book on the display device; detects, using the touch sensor or the pen sensor, user operation which indicates a place of an annotation for the text; makes a determination as to which one of the touch sensor or the pen sensor has detected the user operation; and outputs place data indicating the place of the annotation in a manner capable of identifying a result of the determination as to which one of the touch sensor or the pen sensor has detected the user operation.

Dependencies are inferred from the claim text.