Method and device for storing, retrieving and deleting embedded audio and video data, and memory

An audio-video and memory technology, which is applied in the deletion method and device, memory, storage and retrieval field of embedded audio-video data, can solve the problems such as unsatisfactory audio-video data retrieval and deletion efficiency, audio-video data optimization, etc.

Active Publication Date: 2021-03-26
SHANGHAI IMILAB TECHNOLOGY CO LTD
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AI Technical Summary

Problems solved by technology

[0005] However, in the embedded field, the file system based on Flash usually utilizes the file system based on flash on the virtual file system (VFS) of Linux to manage the audio and video data stored in Flash, and is not optimized for the application of audio and video data. , leading to unsatisfactory retrieval and deletion efficiency of audio and video data

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  • Method and device for storing, retrieving and deleting embedded audio and video data, and memory
  • Method and device for storing, retrieving and deleting embedded audio and video data, and memory
  • Method and device for storing, retrieving and deleting embedded audio and video data, and memory

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Embodiment Construction

[0067] Existing smart cameras usually use an embedded Linux operating system, and use flash memory cards such as TF or SD as storage media for audio and video data. The so-called embedded Linux operating system refers to a dedicated Linux operating system suitable for specific embedded applications that can be solidified in memory chips or single-chip microcomputers with a capacity of only a few thousand or several megabytes after miniaturization and tailoring of standard Linux.

[0068] In the embedded field, the file system based on Flash usually utilizes the file system based on flash on the virtual file system (VFS) of Linux to manage the audio and video data stored in the Flash. Commonly used Flash file systems include jffs2, yaffs, logfs, ubifs, and so on.

[0069] The above file systems are all designed for general file management and are not optimized for the characteristics of video. Therefore, when reading video data in file form, it is usually necessary to traverse ...

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Abstract

The invention discloses a method and device for storing, retrieving and deleting embedded audio and video data, and a memory. The flash memory comprises a plurality of partitions, and each partition comprises a main node area used for storing metadata information of the partition; an index node area which comprises at least one index node queue, and the index node queue comprises a plurality of index nodes corresponding to the same audio and video track; wherein each index node is used for storing timestamp information and storage position information of a frame of audio and video data in a corresponding audio and video track; sorting the index nodes in the same index node queue according to the storage time sequence of the corresponding frame audio and video data; and a main storage areawhich comprises a plurality of data blocks, wherein at least one data block corresponds to the same index node, and the data blocks are used for storing audio and video data. By adopting the scheme, the retrieval or deletion efficiency of the embedded audio and video data can be improved.

Description

technical field [0001] The invention relates to the technical field of memory, in particular to a method and device for storing, retrieving and deleting embedded audio and video data, and a memory. Background technique [0002] With the development of the Internet of Things, the application of smart cameras is becoming wider and wider. A very important function of a smart camera is to record surveillance video and record video playback. [0003] During video playback, the user can drag the time axis on the operation interface to allow the camera to quickly jump to the recorded video of the corresponding time period to view the events that occurred at that time. In addition, the smart camera itself can also run complex artificial intelligence (AI) algorithms, use AI algorithms to analyze the images in the video, and extract structured video information from them. For example, information such as people, pets, and their behavior appear in the video, and the smart camera reco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F3/0644G06F3/0638G06F3/0652G06F3/0667G06F3/061G06F3/0679G11B27/102G11B27/327
Inventor 杨洋
Owner SHANGHAI IMILAB TECHNOLOGY CO LTD
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