Image data processing method and system in dram

Abstract

The present invention provides a processing method and system for image data in a DRAM. The method comprises the following steps: sending, by a GBUS, a request command of reading and writing image data; receiving, by a GDAM, the request command from the GBUS, converting the request command to a request signal corresponding to a DRAM controller, and sending the request signal to a DBUS; receiving, by the DBUS, the request command from the GDAM, and processing the image data in the DRAM by using the DRAM controller. According to the method, the reading and writing of the image data in the DRAM are finished, convenience for accessing the image data in the DRAM is improved, and the highest efficiency of the DRAM is achieved; the effective measures are taken to ensure that storage space of the DRAM is used as little as possible, data bandwidth of the DRAM as little as possible is consumed, and the access efficiency of the DRAM as high as possible is achieved.

Description

technical field [0001] The invention relates to the field of digitized images in electronic equipment, in particular to a method and system for processing image data in DRAM. Background technique [0002] DRAM (Dynamic Random Access Memory) is a storage medium with large capacity and fast speed, so it is often the best choice for image temporary storage. In order to access data conveniently and efficiently, different modules will adopt different methods for mapping between image data and DRAM addresses (referred to as address mapping). For example, when multiple different modules need to access the data of the same image, there are several ways to achieve it: [0003] One is to save multiple copies of the same picture in DRAM, and their address mapping methods are different to adapt to different operating modes of different modules. Obviously, this method increases the storage space and the increased DRAM bandwidth of generating copies; the other It is the image data of on...

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Problems solved by technology

[0004] Aiming at the problems of increasing storage space, DRAM bandwidth, and decreasing bandwidth utilization brought about by the prior art, the present invention provides a DRAM storage space that guarantees as little DRAM storage space as possible, as little required DRAM data bandwidth as possible, and as high a DRAM bandwidth as possible. Method and system for processing image data with high utilization rate in DRAM

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