Based On The Digital Tv Set-top Box Pvr Technology Development And Research

With the country wired digital television network construction and networking's fast development, as well as the network size unceasing expansion, digital television's popularization will become from now on the television industry trend of development inevitably. The so-called digital television, is the traditional analog television signal after sampling, the quantification and the code transforms with the binary number representative's digital signal, then carries on each kind of function processing, the transmission, the memory and the record technology.Recent several years, with digital television set-top box market unceasing expansion, the people are also getting higher and higher to the product request, in the set-top box basic skeleton invariable situation, each kind of vanguard technology integrates in unceasingly the set-top box, promoted the function to be getting more and more rich, more and more perfect set-top box product. The PVR set-top box is produces under this kind of environment. The PVR set-top box's has brought the television life new concept in digital television network application, can promote the digital television service development enormously. The PVR technology and the set-top box union will become the digital television set-top box one kind of development direction.The present paper participates in the PVR digital television set-top box development according to the author the experience and the research results, take the NEC Corporation's digital set-top box plan as the foundation, has studied the software technique which and the software system development the digital television correlation theories as well as the digital television set-top box involves, and has done the thorough research to the PVR technology's characteristic as well as with the set-top box union. This topic's primary mission is the introduction based on the NEC EMA2LL main chip hardware construction and the software module structure, elaborates MPEG- briefly II Standard as well as DVB standard content as well as on set-top box application. Through PVR digital television set-top box investigation and study inspection which promotes to the existing market, proposed that the one whole set PVR digit set-top box realizes the plan, and realizes the difficulty and the solution to the PVR technology makes the detailed elaboration.Other, this article also introduced realizes technical difficulty which as well as solution the two-circuit sound video frequency simultaneously broadcasts, simultaneously to the NEC chip software development environment, namely Green Hill Corporation's Multi 2000 has carried on the brief introduction.