| In recent years,Chinese set-top boxes have developed rapidly.With a series of changes in the global set-top box between demand and supply,China has gradually become the emerging global set-top box manufacturing center,set-top box industry has completed the transfer China in production and manufacturing of the gradient.Digital settop box is described in this paper,using M88CS6001-U chip montage Technology Group Limited production,and the MTOS operating system development based on C/OS-II operating system as the software development platform.First of all,this paper introduces the application of digital TV set top box and USB technology in digital TV,and puts forward the requirement of hardware and software of digital TV set top box.Aiming at the hardware and software requirements under different actual conditions,the hardware and software architecture based on M88CS6001-U set-top boxes is designed.The system design of each module of the software,in order to queue up messages in each task module to achieve communication between,not only enhance the efficiency of development,but also take into account the late management and maintenance.Then,for some important modules and functions are described,such as the coordinate system application framework module all application,multimedia interactive module(MMI)of the specific components and modules of the principle and function of screen menu control module(OSD)functionality and interface in the drawing module to operate various types of concrete OSD how to realize the key logic,and the response message.Finally,the design and implementation of the media center interface are introduced in detail,including the automatic detection program of USB interface,content reading,video playback,audio playback and other design.At present,the software has passed the tests,successfully implemented in hardware equipment manufacturers,and achieved a series of better response to the market,rich digital TV set-top box users experience. |
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