Storage device, navigation device and method for making map database

A production method and technology of a storage device, which are applied in geographic information databases, navigation, measuring devices, etc., can solve the problems of increasing the amount of data in map databases, and achieve the effect of improving accuracy

Inactive Publication Date: 2017-09-12
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Here, it is conceivable to store the position coordinates obtained by measurement (hereinafter, measured position coordinates) in the map database in advance for each house number, so as to improve the accuracy of the position coordinates of each house number. If the location coordinates are stored in the map database in advance, there will be a problem that the data volume of the map database will increase excessively

Method used

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  • Storage device, navigation device and method for making map database
  • Storage device, navigation device and method for making map database
  • Storage device, navigation device and method for making map database

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Embodiment Construction

[0024] Hereinafter, embodiments of the present invention will be described with reference to the drawings. figure 1 The illustrated navigation device 1 is mounted on a vehicle, for example, and has navigation functions such as route search and route guidance. Such as figure 1 As shown, the navigation device 1 includes a position detector (POSI DETC) 11, a map data input device (M-DATA INPUT) 16, a storage medium (STORAGE) 17, an external memory (EXT MEMORY) 18, a display device (DISPLAY) 19, Audio output device (AUDI OUTPUT) 20, operation switch group (SWITCH) 21, remote control terminal (REMOTE CONT TM) 22, remote control terminal sensor (REMOTE CONT SENS) 23, voice recognition unit (SPEECH RECOG) 24, and control unit (CONTROL) 25.

[0025] The position detector 11 has a well-known geomagnetic sensor (GEOMAG SENS) 12, a gyroscope (GYRO) 13, a vehicle speed sensor (SPEED SENS) 14 for calculating the traveling distance, and a sensor for detecting the position of the vehicle b...

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Abstract

A storage device has a map database including at least two definite house numbers and at least one non-definite house number. The two determined house numbers are associated with measured position coordinates, which are obtained from an external server through measurement. The measured position coordinates of each determined door plate are stored in the storage device. The two definite house plates sandwich the non-determined house plate directly or indirectly along the road facing the non-determined house plate. Based on the measured position coordinates of the two definite house plates, when the error between the estimated position coordinates of the non-definite house plate calculated by proportional calculation and the measured position coordinates of the non-definite house plate is greater than a specified value, the The measured position coordinates of the indefinite house number are stored in the storage device, and when the error is smaller than a predetermined value, the measured position coordinates of the indefinite house number are not stored in the storage device.

Description

[0001] Cross References to Related Applications [0002] This invention is based on the Japanese application 2012-172229 for which it applied on August 2, 2012, and uses the description content here. technical field [0003] The present invention relates to a storage device storing a map database, a navigation device using the map database, and a method for creating the map database. Background technique [0004] For example, as disclosed in Patent Document 1, there is known a map having address points (that is, position coordinates) of only a part of house numbers (that is, house numbers) at both ends of a block (district) of a street. database. In addition, Patent Document 1 discloses a navigation device that calculates and determines position coordinates of house numbers other than both ends of the single block by interpolation from the position coordinates of the house numbers at both ends of the single block. Specifically, when there are only the position coordinates ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B29/00G01C21/26
CPCG06F16/29G01C21/26G01C21/387G09B29/106G01C21/34
Inventor 榊原浩晃
Owner DENSO CORP
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