Communication apparatus and method for controlling the same
First Claim
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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.
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Abstract
A communication apparatus and a method used by the communication apparatus to perform magnetic-field communication with an external apparatus is provided. The communication apparatus determines the communication distance between the communication apparatus and the external apparatus based on the voltage level of a radio signal, a distance measuring device, or other means. The communication distance is compared to a predetermined distance and the communication apparatus dynamically adjusts its resonance frequency for improved magnetic-field communication with the external apparatus.
37 Citations
12 Claims
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1. A communication apparatus comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A computer implemented method for controlling a communication apparatus, comprising;
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receiving a magnetic-field communication from an external apparatus at a first resonance frequency that is higher than a predetermined resonance frequency; determining a communication distance between the communication apparatus and the external apparatus; and modifying the first resonance frequency of the communication apparatus in accordance with the communication distance between the communication apparatus and the external apparatus wherein if the communication distance between the communication apparatus and the external apparatus is equal to or shorter than a predetermined distance, the first resonance frequency is modified to a second resonance frequency that is lower than the predetermined resonance frequency. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification