Memory access system and method effectively using memory bandwidth

Abstract

The invention discloses a memory access system and a memory access method which effectively use a memory bandwidth. Video data is arranged by a data arrangement unit to comprise at least one main block and an additional block which are stored inside a memory device respectively. After the video data is specially arranged, the video data in the main block in the memory device can be circularly read by a device so as to increase the utilization rate of the memory bandwidth and the access efficiency of memory data.

Description

technical field [0001] The invention relates to memory access, in particular to a memory access system and method for effectively using memory bandwidth. Background technique [0002] Memory bandwidth refers to the rate at which data is stored or read from a semiconductor memory device, usually expressed in bytes per second. Since memory devices in electronic systems are often shared among various processors or devices, memory resources are usually very precious, and memory bandwidth is often lacking. One way to increase memory bandwidth is to give a processor or device exclusive access to sequentially access an entire block of data at a time. For example, some memory devices provide a burst mode. After the start address and some necessary control signals are provided to the memory device, the data of the entire block can be transmitted without interruption. However, memory devices often require random access to store or read data at various locations in the memory device....

AI Technical Summary

Problems solved by technology

For this access method, since it takes a considerable amount of time to provide access addresses and control signals for each data access, the efficiency of memory bandwidth usage is not high

[0003] When the memory device is used as a video buffer (or frame buffer) to store video data (especially high-density video data) or involves real-time image processing, the random access loss of the aforementioned memory device will become worse

[0004] In view of the inefficient use of memory bandwidth for video data and the inability to realize real-time image applications, it is urgent to propose a novel mechanism to improve the efficiency of memory data access

[0005] It can be seen that the memory access system and method of the above-mentioned existing memory bandwidth obviously still have inconvenience and defects in product structure, manufacturing method and use, and need to be further improved urgently

In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and there is no suitable structure and method for general products and methods to solve the above-mentioned problems. This is obviously a problem that relevant industry players are eager to solve

Images