A set-top box (STB) is a device that connects to an external setsignal source and decodes that signal into content that can be presented on a display unit such as a TV. Digital signal processors (DSPs) handle the vast majority of Video Encoding applications unaided, implementing a scalable, programmable codec. DTSPs can also be used to process analog signals, such as audio and video.
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A set-top box (STB) is a device that connects to an external setsignal source and decodes that signal into content that can be presented on a display unit such as a TV. Digital signal processors (DSPs) handle the vast majority of Video Encoding applications unaided, implementing a scalable, programmable codec. DTSPs can also be used to process analog signals, such as audio and video.
A set-top box (STB) is a device that connects to an external setsignal source and decodes that signal into content that can be presented on a display unit such as a TV. Digital signal processors (DSPs) handle the vast majority of Video Encoding applications unaided, implementing a scalable, programmable codec. DTSPs can also be used to process analog signals, such as audio and video.
Copyright:
Attribution Non-Commercial (BY-NC)
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Download as PPT, PDF, TXT or read online from Scribd
A set-top box (STB) is a device that connects to an external setsignal source and decodes that signal into content that can be presented on a display unit such as a TV. Digital signal processors (DSPs) handle the vast majority of Video Encoding applications unaided, implementing a scalable, programmable codec. DTSPs can also be used to process analog signals, such as audio and video.
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Telecommunication Application of
DTSP: Set Top Box for digital TV reception
Vivek Ingale 0713115
Viveknarayanan.P 0713117 Contents “Digital” Signal Processing So what is digital signal processing? But the real world is analog Why do we need to transmit and process the information that represents it digitally? Less susceptible to interference,better noise immunity Can be manupilated and repeater mey be used Real time Prolonged life, simpler and cheaper So what kind of products use digital signal processing? Challenges faced by manufacturers To reduce time to market, Drive down the price of finished goods, Increase reliability and produce smarter, faster, smaller devices than ever before. TO DO THIS: As well as automating the design, manufacture, supply chain and distribution processes within their businesses, electronics manufacturers need to align sales, marketing and design processes more closely in order to better predict consumer and enterprise demand. They also need to extend the functionality and lifecycle of their products to avoid constant product redesign. Instead of starting every new product from scratch, they need ways of "downloading" functionality to existing platforms. Set-top Box - (STB) A set-top box (STB) is a device that connects to an external signal source and decodes that signal into content that can be presented on a display unit such as a TV. “In built” or “Integrated” digital devices that communicate using computer language. A set-top box is a computerized device that processes digital information. Currently the type of TV set-top box most widely used is one which receives encoded/compressed digital signals from the signal source and decodes/decompresses those signals, converting them into analog signals that your analog television can understand Also has many other functions and uses. What a Set top Box needs Generally put, to provide interactive services, the set-top box might need some or all of the below: (1) A network that offers the potential for interactivity. (2) The network interface (3) A tuner (4) The decoder. (5) The buffer (6) Synchronization software/hardware (7) Middleware (8) Platform (9) Applications (10) Any additional software and/or hardware. (11) A return path (back channel). Video Encoding Digital signal processors (DSPs) handle the vast majority of video encoding applications unaided, implementing a scalable architecture that includes FPGAs as a co-processor to offload certain tasks that satisfy even the most demanding video applications. Many new and exciting innovations, such as HDTV and digital cinema, revolve around video and image processing and this technology's rapid evolution. Leaps forward in image capture and display resolutions, advanced compression techniques, and video intelligence are the driving forces behind the technological innovation. DSP in Digital TV Digital Signal Processor (DSP): Like a graphics processing unit (GPU), a DSP is a specialized microprocessor. It takes some of the workload off of the computer's CPU by performing calculations for analog and digital conversion. DSPs can process multiple sounds, or channels, simultaneously. In most audio and video equipment today, such as DVD and CD players, digital audio tape (DAT), and MP3 players, digital signal processing is mandatory. This is also true for most modern studio equipment as well as more or less advanced synthesizers used in today’s music production. DSP in Digital TV (contd.) Digital signal processing has also made many new noise suppression and companding systems (e.g., Dolby™) attractive. Digital methods are not only used for producing and storing audio and video information, but also for distribution. This could be between studios and transmitters, or even directly to the end user, such as in the digital audio broadcasting (DAB) system. Digital transmission is also used for broadcasting of television (TV) signals. High definition television (HDTV) systems utilize many digital image processing techniques. Digital image processing can be regarded as a special branch of digital processing having many things in common with digital signal processing, but dealing mainly with two-dimensional image signals. Digital image processing can be used for many tasks, e.g., restoring distorted or blurred images, morphing, data compression by image coding, identification and analysis of pictures and photos. IP SET TOP BOXES TMS320DM644x digital media processors FUTURE In the last decade, there has been an extremely rapid growth in cable and satellite STB market due to the advanced features, supported media, and ease of billing. It can be observed that since 1998, there has been tremendous popularity of satellite and cable boxes that has stimulated demand for this technology. Statistics show, a clear trend that there is an increase in the unit sales while the $/unit value of each STB has decreased significantly, further stimulating demand for this technology. Demand for digital cable Set-Top Boxes continues to be strong in 2006. An increasing number of cable TV operators around the world are ordering and deploying cable Set-Top Box products, particularly in conjunction with digital cable video service and with new high-definition and interactive TV services.