Patent ID: 8335470
Filing Date: 2012-12-18
Classification: H01Q,H04M

Abstract:
1. A communication apparatus comprising: a communication unit to perform magnetic-field communication with an external apparatus in a first resonance frequency that is higher than a predetermined resonance frequency; a communication status monitoring unit to monitor a communication status of the communication unit with the external apparatus; and a frequency changing unit to change the first resonance frequency in accordance with the communication status monitored by the communication status monitoring unit; wherein the communication status monitoring unit measures a distance between the external apparatus and the communication unit; wherein the frequency changing unit changes the first resonance frequency in accordance with the distance between the external apparatus and the communication unit measured by the communication status monitoring unit; and wherein, if a distance between the external apparatus and the communication unit measured by the communication status monitoring unit is equal to or shorter than a predetermined distance, the frequency changing unit changes the first resonance frequency to a second frequency that is lower than the predetermined resonance frequency.