Data decompression device and method
A technology of decompression and data, applied in the field of data processing, can solve problems such as large time overhead, poor performance, and reduced data compression benefits, and achieve the effect of reducing bandwidth overhead, reducing time overhead, and reducing instruction cache overhead
Pending Publication Date: 2020-06-12
SZ DJI TECH CO LTD
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- Application Information
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Problems solved by technology
If the decompression device has poor performance, e.g. high time overhead, the benefits of data compression will be reduced
Method used
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[0027] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.
[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments, and are not intended to limit the application.
[0029] The embodiments of the present application can be applied to the scenario of data decompression.
[0030] figure 1 Schematic diagram of the architecture for data decompression. Read data from the memory (Memory), and send it to the processing module for processing. Wherein, the data stored in the memory is compressed data (that is, data after data compression processing). The processing module includes a decompression unit and a processing unit (su...
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The invention provides a data decompression device and method. The device comprises a control module, a cache module and a decompression module. Wherein the control module is used for loading compressed data comprising a compression unit into the cache module, the compression unit comprises compression information and non-zero data, and the compression information represents the position of the non-zero data in original data corresponding to the compression unit; the control module is further used for sending the initial storage position of the current compression unit in the cache module to the decompression module; and the decompression module is used for reading the compression information and the non-zero data of the current compression unit in the cache module according to the initialstorage position, and obtaining the original data corresponding to the current compression unit accordingly. The problem of synchronization between the compressed data and the compression instructiondoes not exist, and the time overhead of data decompression can be reduced to a certain extent, so that the data decompression efficiency can be improved.
Description
[0001] Copyright statement [0002] The disclosure of this patent document contains material that is protected by copyright. This copyright belongs to the copyright owner. The copyright owner has no objection to the reproduction by anyone of the patent document or the patent disclosure as it exists in the official records and files of the Patent and Trademark Office. technical field [0003] The present application relates to the field of data processing, and more specifically, to a data decompression device and method. Background technique [0004] During data processing, usually the data to be processed is read from the memory (Memory) and sent to the processing unit for processing. For example, in the calculation process of the neural network, the amount of data involved in the calculation is huge, mainly feature map data and weight data, which must be read from the memory and sent to the processing unit (for example, the calculation unit (CalculateUnit)) Participate i...
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Login to View More IPC IPC(8): H03M7/30
CPCH03M7/6017
Inventor 杨康李鹏赵文军和田祐司
Owner SZ DJI TECH CO LTD