Dual SD card multimedia file storage system and method for vehicle-mounted video monitoring terminal
A technology for multimedia files and monitoring terminals, applied in the direction of input/output to record carriers, etc., can solve the problems of huge program volume, complex portability, inability to realize low-end electronic products, etc. The effect of failover
Active Publication Date: 2017-01-04
CHENGDU YIMENG HENGXIN TECH
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Problems solved by technology
YAFFS is relatively mature in write balancing technology, but the huge amount of programs and complex portability are basically impossible to achieve in low-end electronic products
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[0028] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings, but the content protected by the present invention is not limited to the following description.
[0029] like figure 1 Shown, the dual SD card multimedia file storage system of vehicle-mounted video monitoring terminal, it comprises linux kernel, SD card hardware device and application program, described linux kernel is made up of file system and SD device driver part, and described application program is composed of An SD management module and a multimedia file storage module are composed, and the SD card hardware device includes an SD card 1 and an SD card 2.
[0030] The SD card 1 is connected to the built-in SD card interface of the embedded CPU, and the SD card 2 interface adopts the GL823 card reader chip of the USB2.0 high-speed interface to expand, and one end of the GL823 card reader chip is connected to the USB interface of the embedde...
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The invention discloses a double-SD-card multimedia file storage system for a vehicle-mounted video monitoring terminal. The double-SD-card multimedia file storage system comprises a linux inner core, an SD card hardware device and an application program. The linux inner core is composed of a file system and an SD device drive portion. The application program is composed of an SD management module and a multimedia file storage module. The SD card hardware device comprises an SD card 1 and an SD card 2. According to the double-SD-card multimedia file storage system for the vehicle-mounted video monitoring terminal, the storage mode of the SD cards is adopted to replace an existing disk storage mode, the size of a storage is small, and the vehicle-mounted video monitoring terminal is convenient to carry and low in cost; the power consumption of the SD cards is smaller than that of a disk, the heat emission quantity is smaller, the working temperature range is large, the vehicle-mounted video monitoring terminal can resist collision, impact and vibration, the process when a motor rotates in an acceleration mode does not exist, the vehicle-mounted video monitoring terminal is rapidly started and is free of noise, and the size and the cost of the vehicle-mounted video monitoring terminal are also reduced.
Description
technical field [0001] The invention relates to a multimedia file storage method, in particular to a dual SD card multimedia file storage system method for a vehicle-mounted video monitoring terminal. Background technique [0002] At present, many vehicle-mounted video monitoring terminal devices are solutions that add wireless communication modules to traditional DVR devices, using traditional disk storage. Due to the extremely high requirements for anti-vibration and heat dissipation of the disk, the vibration during vehicle operation and the outdoor temperature difference in different regions at different times can easily cause damage to the hard disk and loss of data, reducing the stability of the on-board video equipment. Some video terminals have added disk anti-vibration technology, but it can only alleviate the contradiction, but cannot fundamentally solve the problem, and it also increases the complexity and cost of the system, which is not an ideal solution. [00...
Claims
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IPC IPC(8): G06F3/06
Inventor 王春波谢波
Owner CHENGDU YIMENG HENGXIN TECH