Method for upgrading functions of system by utilizing SD card interface attached to vehicle-mounted multi-media play navigation system and SD upgrading function card device

Abstract

The invention discloses a method for upgrading the functions of a system by utilizing an SD card interface attached to a vehicle-mounted multi-media play navigation system. The method is characterized in that an upgrading function card matched with the SD card interface is arranged, and an intermediate program and a mini SD card interface are arranged in the upgrading function card; navigation programs and the corresponding executive programs of a function upgrading module are stored in the mini SD card, so that the original vehicle-mounted multi-media play navigation system not only can call the navigation executive programs of the mini SD card in the upgrading function card interface by utilizing the SD card interface, but also can realize the operation of the corresponding programs of the function upgrading module, thereby realizing the function upgrading of the vehicle-mounted multi-media play navigation system. The invention also discloses an SD upgrading function card device which utilizes the method disclosed by the invention. The device applying the upgrading method can realize function upgrading without changing other components of the original vehicle-mounted system and has the advantages of simple and convenient upgrading operation and low cost.

Description

technical field [0001] The invention relates to the technical field of vehicle-mounted multimedia playback and navigation systems, in particular to the upgrading of the functions of the vehicle-mounted multimedia playback system with an SD card socket. Background technique [0002] At present, the vehicle-mounted multimedia player navigation system has brought new audio-visual enjoyment and convenience to people's car life. The existing vehicle-mounted multimedia players generally have data input media such as optical drives. With the advancement of technology, large storage capacity and volume Small SD cards are gradually becoming the standard configuration of many vehicles. People set the SD card access port on the panel. For the car multimedia player navigation system with navigation function, the SD card stores the navigation execution software program. The navigation software in the card executes the program to realize the navigation function in the audio-visual display...

AI Technical Summary

Problems solved by technology

[0003] The functions of the vehicle-mounted multimedia player navigation system with the above-mentioned functions are fixed at the time of design. Except for the update function of the map, other functions cannot be added, such as adding communication functions. If further function upgrades are performed, unless a new set is replaced. The car multimedia player navigation system is not only costly, but also causes unnecessary waste when replacing it. With the advancement of technology, people cannot enjoy this kind of progress in time.

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