High-speed audio and video magnitude storage method and device for vehicular environment

Abstract

A high-speed audio-video mass storing method used in vehicular environment comprises the following steps: through adopting a plurality of parallel-operation intelligent nodes to increase bandwidth, data is stored in a high-speed volatile memory unit at first; then, a plurality of intelligent nodes respectively writes the data block in the high-speed volatile memory unit belonging to each intelligent node in the low-speed nonvolatile memory unit controlled by a corresponding intelligent node. A high-speed audio-video mass storing device, which is used in vehicular environment and is designed according to the method, is provided with a main processor circuit, a volatile cache circuit, an embedded intelligent node circuit and a low-speed nonvolatile memory circuit, wherein the volatile cache circuit which adopts a duplex interface is respectively connected with the main processor circuit and the embedded intelligent node circuit; the main processor circuit exchanges data and commands with the embedded intelligent node circuit through the volatile cache circuit; moreover, the embedded intelligent node circuit reads out data from the volatile cache circuit and writes the data in the low-speed nonvolatile memory circuit.

Description

technical field [0001] The invention relates to high-speed mass non-volatile storage, in particular to a high-speed audio and video mass storage method and device thereof applied in a vehicle environment. Background technique [0002] Mass storage generally uses hard disks. Due to the technology of hard disks, miniaturization and shock resistance are difficult to achieve, especially in vibration environments, the probability of damage to hard disks is high; at the same time, due to the working characteristics of hard disk storage media, data must be erased every time it is written. Delete, wait, write, wait for four steps, it is impossible to write to each storage area in real time. In the case of car audio and video recording, small size, low power consumption, strong shock resistance and reliability are required. At the same time, in the case of audio and video recording, the data recording flow is particularly large. General non-volatile storage media It is difficult to ...

AI Technical Summary

Problems solved by technology

[0002] Mass storage generally uses hard disks. Due to the technology of hard disks, miniaturization and shock resistance are difficult to achieve, especially in vibration environments, the probability of damage to hard disks is high; at the same time, due to the working characteristics of hard disk storage media, data must be erased every time it is written. Delete, wait, write, wait for four steps, it is impossible to write to each storage area in real time

In the case of car audio and video recording, small size, low power consumption, strong shock resistance and reliability are required. At the same time, in the case of audio and video recording, the data recording flow is particularly large. General non-volatile storage media It is difficult to achieve such a large bandwidth

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