Patent ID: 8706412
Filing Date: 2014-04-22
Classification: G01C,G08G

Abstract:
1. A route guidance apparatus comprising: a location information obtainer which obtains current location information of a subject apparatus; a communication controller which transmits the current location information of the subject apparatus obtained by the location information obtainer to another pre-registered apparatus, and receives current location information of the another pre-registered apparatus; a location relationship determiner which determines whether the subject apparatus precedes the another pre-registered apparatus in a heading direction, based on a location relationship of the subject apparatus and the another pre-registered apparatus with respect to the heading direction of the subject apparatus, wherein the location relationship is determined according to the current location information of the subject apparatus obtained by the location information obtainer and the current location information of the another pre-registered apparatus obtained by the communication controller; an operation mode determiner which operates the subject apparatus as a main device when the location relationship determiner determines that the subject apparatus precedes the another pre-registered apparatus in the heading direction, and operates the subject apparatus as a sub device when the location relationship determiner determines that the subject apparatus does not precede the another pre-registered apparatus in the heading direction; and a function selector which enables the communication controller to transmit to the another pre-registered apparatus heading direction information indicating the heading direction when the operation mode determiner determines that the subject apparatus is a main device, and enables the communication controller to receive the heading direction information from the another pre-registered apparatus determined to be a main device when the operation mode determiner determines that the subject apparatus is a sub device.