Navigation system for use with an automobile and reading unit fo

Details Navigation system for use with an automobile and reading unit fo Navigation system for use with an automobile and reading unit fo

1982-07-06

1985-02-26

Chin, Gary

Boots, shoes, and leggings

364449, 364521, 340990, 340995, 73178R, 343451, G06F 1550

Patent

active

045021236

ABSTRACT:
In a navigation system arranged to display a road map in accordance with road map information from a cassette tape, and the present location of a motor vehicle equipped with the navigation system, a cassette tape distinguishing circuit is provided to a cassette tape player which picks up the road map information from a predetermined cassette having a window at given portion of the cassette housing. A switching circuit is responsive to the cassette tape distinguishing circuit so that the output data of the cassette tape is processed to display a given map only when a cassette carrying road map information is loaded in the cassette tape player. In the case a normal cassette carrying audio signals, such as music, is loaded the picked up audio signal is transmitted to an amplifier so that sound reproduction is effected. Thus, a single cassette player can be used in common as both a part of the navigation system and a part of a sound reproduction system.

REFERENCES:
patent: 3760360 (1973-09-01), Reynolds et al.
patent: 4086632 (1978-04-01), Lions
patent: 4109115 (1978-08-01), Yamamoto
patent: 4139889 (1979-02-01), Ingels
patent: 4159490 (1979-06-01), Wood
patent: 4253150 (1981-02-01), Scovill
patent: 4280136 (1981-07-01), Kashima et al.
patent: 4291373 (1981-09-01), Mizote et al.
patent: 4312577 (1982-01-01), Fitzgerald
patent: 4398300 (1983-08-01), D'Alayer de Costemore D'Arc et al.

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