Memory bandwidth control device

一种存储器带宽、控制装置的技术，应用在仪器、输入/输出到记录载体、电数字数据处理等方向，能够解决数据传输效率降低等问题

Inactive Publication Date: 2005-03-30
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, depending on the bandwidth of the memory, the number of external devices to be connected is limited
In addition, for external devices that do not receive or output material data, the allocated memory bandwidth is not used, resulting in a reduction in data transmission efficiency

Method used

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Examples

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Embodiment Construction

[0017] With reference to accompanying drawing, preferred embodiment of the present invention will be described: (1) the circuit structure of memory bandwidth control device

[0018] refer to figure 1 , Reference numeral 1 designates the memory bandwidth control device of the present invention installed in the editing equipment, which transmits material data with hard disk drive (HDD) 60 through memory 80, memory 80 includes such as double data transfer rate-synchronous dynamic random access Memory (DDR-SDRAM).

[0019] The memory bandwidth control device 1 is structured with a field programmable gate array (FPGA), and the device is designed so that it passes through various input / output ports, such as the first serial data interface (SDI)-IN port 3, the second SDI- IN port 4, first SDI-OUT port 5, second SDI-OUT port 6, ENC / DEC port 7 and CPU port 12, with first to fourth devices 50 to 53 connected to I / O buffer 2, Encoder / decoder (ENC / DEC) 54 and CPU62, carry out the transm...

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PUM

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Abstract

A memory bandwidth control device is capable of significantly improving efficiency of data transfer between an external device and a memory. This invention provides a memory 80 used for temporarily storing and outputting data to be communicated with external devices being connected via input / output ports, and an I / O buffer 2 for dynamically assigning memory bandwidth to external devices requesting data transfer when receiving the data transfer requests from the external devices to the memory 80. As compared with a case of assigning fixed memory bandwidth, efficiency of data transfer to the memory 80 can be significantly improved without wasting memory bandwidth.

Description

technical field [0001] The present invention relates to a memory bandwidth control device, and is particularly suitable for temporarily storing material data (material data) such as video and audio input to video editing equipment from the outside to a memory, and then processing the data through the memory, Or perform memory bandwidth control for burst transfers to hard drives. Background technique [0002] In order to store material data received from an external device to the hard disk drive through the input / output port, the video editing device temporarily stores a specified amount or more of material data in the memory, and then performs a burst transfer of the data, transferring the data to to the hard disk drive to transfer data in a short time with improved transfer efficiency. [0003] Furthermore, in order to edit the material data, the video editing apparatus supplies the material data stored in the hard disk drive, through the memory, to an external device such...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/12G06F3/06G06F13/16
CPCG06F13/1673
Inventor 奥野健一
Owner SONY CORP
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