Arbiter for serial data bus-based streaming media transmission system terminal equipment

Abstract

The invention discloses an arbiter for serial data bus-based streaming media transmission system terminal equipment and provides a bus arbiter in the terminal equipment. Multiple sets of terminal equipment are connected in series through a serial bus and the frontmost terminal equipment is connected in series with central control equipment. The bus arbiter comprises a data reading unit, at least one storage, at least one priority calculator, a comparator and an upstream port. The bus arbiter is used for arbitrating data using the serial bus, overcomes the shortcomings of both static priority arbitration algorithm and equalization algorithm, takes advantage of the advantage of short average waiting time of the dynamic priority algorithm, ensures that each module has equal chance of using the bus, increases the utilization rate of the bus and is simple to implement.

Description

technical field [0001] The technology belongs to the technical field of data forwarding and switching, and relates to a bus arbitration method for sending and receiving multiple stream media data on the same bus. Background technique [0002] In today's information age, people communicate more and more frequently in real time, and their requirements for fast information communication are also getting higher and higher. From large-scale international political meetings to small corporate business negotiations, our communication depends on meetings all the time. With the rapid development of our needs, the conference system gradually develops from a single point-to-point mode to a point-to-multipoint mode, and even a multi-point-to-multipoint mode. The rapid development of IT technology makes us get used to it and very Relying on the convenient, fast and cheap working mode brought to us by this technology, the integration of IT, audio, video and the network has transformed us...

AI Technical Summary

Problems solved by technology

The advantage of the dynamic priority algorithm is that it takes into account the advantages and disadvantages of the first two algorithms, that is, it has a smaller average waiting time and allows each processor in the system to have a more equal opportunity to use the bus. The disadvantage is that the control logic is more complicated.

[0011] (4) First-come-first-serve algorithm This is an ideal arbitration algorithm. It does not select applicants according to priority, so it has the best equality, but it is difficult to implement

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