发明名称 |
NAVIGATION SYSTEM HAVING ADVANCE INSTRUCTING FUNCTION |
摘要 |
PURPOSE:To inform the driver of the advancing direction, by setting a circular specified region with each intersection in road map data as a center, and obtaining the angular distance between the advancing direction of an automobile and the azimuth to the destination at that point when the automobile enters the specified region. CONSTITUTION:A CPU1 has a function for controlling the entire system. An azimuth sensor 2 detects the absolute azimuth. An azimuth sensor 3 generates the output of a relative azimuth. A vehicle speed pulse sensor 4 inputs the running distance of an automobile to the CPU1 and generates pulses in correspondence with the speed of the vehicle. An operating switch part 5 inputs the running conditions of the automobile to the CPU1. An outer memory device 6 stores the road map data and the like. A color CRT7 displays the road map data and the like. A speech signal amplifier 8 and a speaker 9 are provided. Thus the advancing direction of the vehicle at an intersection can be transmitted to the driver in audio manner by the short-time set up before driving. The direction can be displayed on the CRT. |
申请公布号 |
JPS60202307(A) |
申请公布日期 |
1985.10.12 |
申请号 |
JP19840058301 |
申请日期 |
1984.03.28 |
申请人 |
HITACHI SEISAKUSHO KK |
发明人 |
TSUJII FUMIO;MATSUOKA YOUJI;SHIBATA TAKANORI;ENDOU AKIRA;SHIRAI YUTAKA |
分类号 |
G01C21/00;G01C3/00;G01C21/20;G01C21/36;G08G1/0968;G08G1/0969;G08G1/137 |
主分类号 |
G01C21/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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