| 摘要 |
Disclosed are a method and system for mutual transmission of information. When an intelligent terminal sends information to an external device, the intelligent terminal modulates to-be-sent data into a brightness and/or color change signal, and adjusts the brightness and/or color of at least a part of a display area on a screen of the intelligent terminal according to the brightness and/or color change signal; and the external device senses the brightness and/or color change of the screen of the intelligent terminal, and demodulates the sensed brightness and/or color change signal to obtain the data sent by the intelligent terminal. When the external device sends information to the intelligent terminal, the external device modulates to-be-sent data into a charge change signal, and controls the charge change on a capacitive excitation module of the external device according to the charge change signal; and the intelligent terminal detects the capacitance change on a capacitive touchscreen of the intelligent terminal, and demodulates a detected capacitance change signal to obtain the data sent by the external device. The technical solution of the present invention has the advantages of high security and low cost. |
