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Vehicle navigation system and information storing method thereof

A vehicle navigation and the technology of this system, applied in the field of vehicle navigation system and its stored information, can solve the problems of unable to save information in real time, unable to save information, and vehicle navigation equipment can not continue to use, so as to achieve a clear logical management level and avoid loss of information Effect

Inactive Publication Date: 2013-07-17
HUIZHOU DESAY SV AUTOMOTIVE
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  • Abstract
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Problems solved by technology

However, there are still many disadvantages in using Nand-flash to store information. For example, just writing data to Nand-flash when the voltage is unstable will cause damage to Nand-flash, which will cause the car navigation device to be unusable. -flash, the general practice is to write data into Nand-flash when the vehicle speed reaches a certain level, but if the vehicle speed does not meet the requirements, the information cannot be saved, and due to the influence of the voltage, the information cannot be saved in real time

Method used

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  • Vehicle navigation system and information storing method thereof

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Embodiment Construction

[0023] The method for storing information of the vehicle navigation device of the present invention at any time will be further described in detail below in conjunction with specific embodiments and accompanying drawings.

[0024] A car navigation system, which includes: navigation operating software for realizing the functions of the car navigation system; EPROM memory for storing important information data; NandFlash memory for users to store non-important information data; for judging the data currently generated by the system A data judging module for whether the information is important data information; and a cache memory for temporarily storing non-important information data.

[0025] It can be understood that after the system is powered on and running, the navigation operation software will generate a large amount of data information along with the user's execution of operations; in order to better preserve these data information, the system stores some important data i...

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Abstract

The present invention relates to a vehicle navigation system and information storing method thereof. An EPROM memory capable of repeatedly erasing and writing is arranged inside the system, and is used for storing important data information of the system. When the system is in an operation process, the important data information in the EPROM memory can be real-timely called, the current operation status of a navigation device can be updated according to the important data information, and the updated operation status information is written into the EPROM memory if the navigation device operation status is changed. The method for storing information has a clear logic management level, and can permanently store related setting information of the navigation device into the EPROM memory, effectively avoiding the shortcoming of information losing because of the voltage drop in the unit.

Description

technical field [0001] The invention relates to the field of vehicle electronics, in particular to a vehicle navigation system and a method for storing information thereof. Background technique [0002] With the wide application of vehicle navigation equipment and the increasing development of communication technology, people's storage requirements for vehicle navigation information are also increasing. At present, in terms of vehicle navigation equipment, most of the information to be saved is written into Nand-flash memory. Due to its advantages of large capacity and fast rewriting speed, it is suitable for storing large amounts of data, so it has been more and more popular in the industry. Wide range of applications. However, there are still many disadvantages in using Nand-flash to store information. For example, just writing data to Nand-flash when the voltage is unstable will cause damage to Nand-flash, which will cause the car navigation device to be unusable. -flas...

Claims

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Application Information

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IPC IPC(8): G01C21/36
Inventor 刘楚群唐侨张西州
Owner HUIZHOU DESAY SV AUTOMOTIVE
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