SET TOP BOX. What is set-top box ? An interactive device which integrates the video and audio decoding capabilities of television with a multimedia application execution environment. It provides a user friendly interface offering personalized multimedia services and regular cable TV service.
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What is set-top box ?
An interactive device which integrates the video and audio decoding capabilities of television with a multimedia application execution environment. It provides a user friendly interface offering personalized multimedia services and regular cable TV service.
For personalized interactive services, a set top box should be addressable in the video dial-tone network, thus providing P2P communication between a video and information provider and a user. It should also have the ability to download client applications and execute them locally.
The control software on the set top box ties together all the hardware components into a functioning unit.
The various hardware components of STB have programmable registers that can be used to control the behaviour of the components. Each one of these devices has a device driver task associated with it that allows the main microprocessor to manage the device. The device drivers also perform interrupt servicing for the components and hide the details about device addresses and actual register values.
For the hardware there will be strong trend towards very flexible decoders in the form of signal processors and fast CPU’s possibly even combined with even combined in one large digital processing CPU. The arrangements for sending information from terminal(STB) into the network can be improved both in latency and in throughput. The graphic subsystem is likely to grow towards 3D applications.
STB software hides the machine and network specific features of a set top box under a layer of abstraction and provides a user friendly interface to access cable television and video information services. The software components are likely to increase with more integration and more programmable components. This will increase the flexibility of STB.