Patent ID: 8514435
Filing Date: 2013-08-20
Classification: H04N

Abstract:
1. A communication system comprising: a primary communication device having a first communicating portion configured to effect wireless communication in a first communication mode, and a second communicating portion configured to effect wireless communication in a second communication mode different from the first communication mode; a first auxiliary communication device having a first auxiliary communicating portion configured to effect communication with the first communicating portion of the primary communication device in the first communication mode; and a second auxiliary communication device having a second auxiliary communicating portion configured to effect communication with the second communicating portion of the primary communication device in the second communication mode, wherein the first auxiliary communication device further has a third auxiliary communicating portion configured to effect the communication with the second auxiliary communication device in a third communication mode different from the first communication mode and the second communication mode, the second auxiliary communication device further having a fourth auxiliary communicating portion configured to effect the communication with the third auxiliary communicating portion in the third communication mode, at least one of the primary communication device and the second auxiliary communication device further having a first control portion configured such that when said one communication device is commanded to effect the communication with the other communication device in the second communication mode, the first control portion transmits to the other communication device a request to start the communicating portion of the other communication device, by communication between the primary communication device and the first auxiliary communication device in the first communication mode and communication between the first auxiliary communication device and the second auxiliary communication device in the third communication mode, starts the communicating portion of said one communication device to effect the communication in the second communication mode, and stops an operation of the communicating portion of said one communication device in the second communication mode after the communication with the other communication device in the second communication mode is terminated, and wherein said other communication device further has a second control portion configured such that when the other communication device receives the request to start its communicating portion from said one communication device, by the communication between the primary communication device and the first auxiliary communication device in the first communication mode and the communication between the first auxiliary communication device and the second auxiliary communication device in the third communication mode, the second control portion starts the communicating portion of the other communication device to effect the communication in the second communication mode, and stops an operation of the communicating portion of said other communication device in the second communication mode after the communication with said one communication device in the second communication mode is terminated.