Electromagnetic wave communication system, apparatus, method and program
First Claim
1. A communication apparatus comprising:
- a carrier wave generator configured to generate a first electromagnetic wave using an antenna;
a modulator configured to modulate the first electromagnetic wave for transmitting a first message to an external communication device;
a load modulator configured to modulate a second electromagnetic wave generated by the external communication device for transmitting a second message to the external communication device; and
a controller configured to cause the communication apparatus to;
transmit the first message and a third message when the second electromagnetic wave is not detected, andtransmit the second message, which is different from the first message and the third message, when the second electromagnetic wave is detected,wherein the first message is a first inquiry for identification information of the external communication device,wherein the communication apparatus is configured to receive a first response in response to the first inquiry, the first response including a second inquiry from the external communication device for identification information of the communication apparatus,wherein the second message includes a second response associated with the second inquiry for identification information of the communication apparatus,wherein the third message is a third inquiry for available protocol information indicative of a communication protocol which is available by the external communication device, andwherein the communication apparatus is configured to switch a first communication protocol to a second communication protocol in response to receiving a third response to the third inquiry.
1 Assignment
0 Petitions
Accused Products
Abstract
A communication system, a communication apparatus, a communication method, and a program for acquiring the advantage of a plurality of communication protocols is provided. A random number and a first communication information including first identification information of a communication apparatus is sent to another communication apparatus by using near field communication. Second communication information is received by the communication apparatus from the other communication apparatus by using near field communication. The second communication information includes second identification information of the other communication apparatus necessary to a second communication. The second communication is performed between the communication apparatus and the other communication apparatus by using the second communication information received by using the near field communication.
12 Citations
14 Claims
-
1. A communication apparatus comprising:
-
a carrier wave generator configured to generate a first electromagnetic wave using an antenna; a modulator configured to modulate the first electromagnetic wave for transmitting a first message to an external communication device; a load modulator configured to modulate a second electromagnetic wave generated by the external communication device for transmitting a second message to the external communication device; and a controller configured to cause the communication apparatus to; transmit the first message and a third message when the second electromagnetic wave is not detected, and transmit the second message, which is different from the first message and the third message, when the second electromagnetic wave is detected, wherein the first message is a first inquiry for identification information of the external communication device, wherein the communication apparatus is configured to receive a first response in response to the first inquiry, the first response including a second inquiry from the external communication device for identification information of the communication apparatus, wherein the second message includes a second response associated with the second inquiry for identification information of the communication apparatus, wherein the third message is a third inquiry for available protocol information indicative of a communication protocol which is available by the external communication device, and wherein the communication apparatus is configured to switch a first communication protocol to a second communication protocol in response to receiving a third response to the third inquiry. - View Dependent Claims (2, 3, 4, 5, 6, 7, 14)
-
-
8. A communication method for a communication apparatus, the communication method comprising:
-
generating a first electromagnetic wave by a carrier wave generator using an antenna; modulating the first electromagnetic wave for transmitting a first message to an external communication device by a modulator, wherein the first message is a first inquiry for identification information of the external communication device; modulating, by a load modulator, a second electromagnetic wave generated by the external communication device for transmitting a second message to the external communication device; transmitting the first message and a third message, when the second electromagnetic wave is not detected, wherein the third message is a third inquiry for available protocol information indicative of a communication protocol which is available by the external communication device, receiving a first response in response to the first inquiry, the first response including a second inquiry from the external communication device for identification information of the communication apparatus; switching a first communication protocol to a second communication protocol in response to receiving a third response to the third inquiry; and transmitting the second message, which is different from the first message and the third message, when the second electromagnetic wave is detected, wherein the second message includes a second response associated with the second inquiry for identification information of the communication apparatus. - View Dependent Claims (9, 10, 11, 12, 13)
-
Specification