Unlock instant, AI-driven research and patent intelligence for your innovation.

Cache arbitration method and system applied to multi-channel video collecting and broadcasting system

A technology of multi-channel video and arbitration method, which is applied in the field of buffer arbitration and can solve the problem of low bandwidth utilization

Active Publication Date: 2016-09-21
INSPUR BEIJING ELECTRONICS INFORMATION IND
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The DDR SDRAM in the existing multi-channel video acquisition and broadcasting system usually uses a polling mechanism as a cache mechanism, which makes the bandwidth utilization ratio relatively low

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cache arbitration method and system applied to multi-channel video collecting and broadcasting system
  • Cache arbitration method and system applied to multi-channel video collecting and broadcasting system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0046] The embodiment of the present invention discloses a buffer arbitration method applied to a multi-channel video acquisition and broadcasting system, see figure 1 As shown, the method includes:

[0047] Step S11: Set the state of the request arbitration state machine to an idle state;

[0048] Step S12: Query whether there is a FrameStore video and audio task request in the current cycle, if yes, go to step S13, if not, go to step S14;

[0049] Step S13...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a cache arbitration method and a system applied to a multi-channel video collecting and broadcasting system, and the method comprises the steps: S11, the state of a request arbitration state machine is set as an idle state; S12, if a FrameStore video and audio task request exists in current period is queried, if yes, S13 is entered, if not, S14 is entered; S13, a FrameStore_Channel terminal interface control state machine is notified to process the FrameStore video and audio task request; and S14, if a PCIE DMA task request exists is queried, if yes, a PCIE DMA terminal interface control state machine is notified to process the PCIE DMA task request. According to the invention, a defect of low bandwidth utilization rate caused by solely relying on a polling mechanism can be avoided, and the bandwidth of DDR SDRAM can be fully utilized.

Description

technical field [0001] The invention relates to the technical field of video images, in particular to a buffer arbitration method and system applied to a multi-channel video acquisition and broadcasting system. Background technique [0002] At present, in order to adapt to the development of video image technology, a multi-channel video acquisition and broadcasting system has appeared on the market. This system puts forward high requirements on the transmission and processing performance of image data after real-time acquisition. In particular, the widespread use of high-resolution, high-frequency frame cameras makes the demand for high bandwidth more urgent. In the process of real-time acquisition of these massive image data, buffer memory is an essential component, such as the more commonly used DDR SDRAM (that is, double-rate synchronous dynamic random access memory). The DDR SDRAM in the existing multi-channel video acquisition and broadcasting system usually uses a pol...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/18H04N21/231
CPCH04N7/181H04N21/23103
Inventor 董培强
Owner INSPUR BEIJING ELECTRONICS INFORMATION IND