Patent ID: 6530524
Filing Date: 2003-03-11
Classification: G06F,G06K

Abstract:
A portable electronic apparatus, comprising:a light source; a memory circuitry that stores data; an optical scanning circuitry that uses the light source to optically scan an image supported by a pad and a roller which are electrically conductive and establish an electrical connection when the pad and the roller are in contact with each other, and to generate data corresponding to the image to be stored in the memory circuitry; an optical transmitter using the light source to optically transmit data in the memory circuitry; a selector to provide one of a first input signal modulated according to the data stored in the memory circuitry and a second input signal that is constant; and a controller that controls the selector to supply the second input signal to the light source when a scanning mode is selected and to supply the first input signal to the light source when a data transmission mode is selected, wherein the optical scanning circuitry further comprises a detector to detect whether or not the image is received based on an electrical disconnection between the pad and the roller.