Digital map position information transfer method

• US 20050131632A1
• Filed: 12/08/2004
• Published: 06/16/2005
• Est. Priority Date: 04/27/2001
• Status: Abandoned Application

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Adachi, Shinya
• Application Number:
  US11/007,895
• Publication Number:
  US 20050131632A1
• Time in Patent Office: Days
• US Class Current: 701/200
• CPC Class Codes: G01C 21/30 Map- or contour-matching
• CPC Class Codes: G09B 29/106 using electronic means

Abstract

An encoder and a decoder are utilized for a location reference system in which different digital maps are installed in a transmitting side and a receiving side. The encoder comprises a selecting section for selecting supplemental points located around an endpoint of a target shape points set and a data creating section for preparing a transmitting data including both the target shape points set and the supplemental points to the receiving side. The decoder comprises a data acquiring section for acquiring data including supplemental points located around an endpoint of a target shape points set, a defining section for defining a shape points set on the digital map of the receiving side with reference to the supplemental points, and an output section for outputting a road section on the digital map of the receiving side in accordance with the defined shape points set.

Claims

1. An encoder utilized for a location reference system wherein different digital maps are installed in a transmitting side and a receiving side of said system, said encoder comprising:

a selecting section for selecting supplemental points located around an endpoint of a target shape points set, wherein said supplemental points are referred by said receiving side in order to define a corresponding shape points set of said target shape points set during map matching; and

a data creating section for preparing a transmitting data including both said target shape points set and said supplemental points to said receiving side.

2. A decoder utilized for a location reference system wherein different digital maps are installed in a transmitting side and a receiving side of said system, said decoder comprising:

a data acquiring section for acquiring data including supplemental points located around an endpoint of a target shape points set;

a map matching section for defining a shape points set, which is corresponding to the transmitter target shape points set, on the digital map of the receiving side by map matching with reference to the supplemental points; and

an output section for outputting a road section on the digital map of the receiving side in accordance with the defined shape points set.

3. An encoder utilized for a location reference system wherein different digital maps are installed in a transmitting side and a receiving side of said system, said encoder comprising:

a selecting section for selecting supplemental points located around an endpoint of a target shape points set, wherein said supplemental points are referred by said receiving side in order to define a corresponding shape points set of said target shape points set; and

a data creating section for preparing a transmitting data including both said target shape points set and said supplemental points to said receiving side.

4. A decoder utilized for a location reference system wherein different digital maps are installed in a transmitting side and a receiving side of said system, said decoder comprising:

a data acquiring section for acquiring data including supplemental points located around an endpoint of a target shape points set;

a defining section for defining a shape points set, which is corresponding to the transmitter target shape points set, on the digital map of the receiving side with reference to the supplemental points; and

an output section for outputting a road section on the digital map of the receiving side in accordance with the defined shape points set.