Patent ID: 9069655
Filing Date: 2015-06-30
Classification: G01C,G06F,G08G

Abstract:
1. An on-vehicle apparatus comprising: a storage device including a plurality of storage areas; a positional information generating section for generating, at every one of a first prescribed timing, a positional information piece representing a position of the vehicle which occurs at said every one of the first prescribed timing, and for writing the generated positional information piece into one of the storage areas, wherein the positional information generating section includes a GPS receiver; a positional information controlling section for sending positional information pieces in the storage areas to a positional information collecting apparatus at every one of a second prescribed timing, and for allowing new positional information pieces to be written into the storage areas in which the sent positional information pieces are stored; and wherein in cases where the positional information controlling section is not sending the positional information pieces in the storage areas to the positional information collecting apparatus, the positional information controlling section allows a new positional information piece or pieces to be written into one or more of the storage areas which store a positional information piece or pieces having not been sent yet; an angle deciding section for, in cases where the positional information pieces having not been sent yet include a first positional information piece, a second positional information piece generated after generation of the first positional information piece, and a third positional information piece generated after generation of the second positional information piece, calculating a first straight line connecting a position represented by the first positional information piece and a position represented by the second positional information piece, calculating a second straight line connecting the position represented by the second positional information piece and a position represented by the third positional information piece, calculating an angle formed between the first straight line and the second straight line, and deciding whether or not the calculated angle is smaller than a prescribed threshold angle; wherein in cases where the angle deciding section decides that the calculated angle is smaller than the prescribed threshold angle, the positional information controlling section inhibits a new positional information piece from being written into the storage area storing the second positional information piece.