Simplex-duplex automatic adapted circuit and system of portable navigation devices

An automatic navigation and adaptation circuit technology, applied in navigation, surveying and mapping, navigation, measuring devices, etc., can solve problems such as wire waste, production, and after-sales complexity, and achieve the effect of reducing the waste of adapter lines
CN102419177BInactive Publication Date: 2014-06-25中海重工(深圳)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
中海重工(深圳)有限公司
Publication Date
2014-06-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention, which is suitable for the field of electronic circuits, provides a simplex-duplex automatic adapted circuit and a system of portable navigation devices. The adapted circuit comprises a master control module, and a first electronic switch and a second electronic switch which are connected with the master control module, wherein, the second electronic switch is connected with a USB interface module, and the USB interface module is connected with a power-supply control module. According to the invention, the self-adaptation of different serial communication interfaces of portable navigation devices is solved, an effective method for connecting external serial devices with portable navigation devices is provided, thus the problem of adaptive line waste caused by using traditional methods is reduced.
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Description

technical field

[0001] The invention belongs to the field of electronic circuits, in particular to a single-duplex automatic adaptation circuit of a portable automatic navigation system and a corresponding portable automatic navigation system. Background technique

[0002] With the opening of the US military's Global Positioning System (GPS) for civilian use, products that use satellites to position and navigate cars are not uncommon. Satellite positioning and navigation equipment was "passive" at the earliest time. To be precise, it can only be regarded as a satellite positioning system. It can only let others know the position of the receiver holder through the GPS receiver. Some satellite navigation products that appeared later are "active". This type of satellite navigation product is actively seeking "how to get there" while knowing its position. However, these products are not well integrated with life and mobile. Together, the portable automatic navigation system (PN...

Claims

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