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
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[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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