IPR Policy of the DVB Project

Author(s):  
Carter Eltzroth

The DVB Project is a European-based standards forum that for close to 15 years has been developing specifications for digital video broadcasting, many now implemented worldwide. Its IPR policy has several novel elements. These include “negative disclosure,” the obligation of each member to license IPRs essential to DVB specifications unless it gives notice of the unavailability of the IPR. This approach contrasts with the more common rule (e.g., within ANSI accredited bodies) calling for IPR disclosure and confirmation of availability on FR&ND terms. Other notable features of the IPR policy of DVB are arbitration and fostering of patent pooling. This article provides a commentary on the DVB’s IPR policy and on its application. It also describes the work of the DVB in resolving IPR “gateway” issues when the perceived dominance of technology contributors, notably through control over IPRs, risked, in the view of some members, distorting new digital markets. In two cases, DVB has created a licensing mechanism to dispel these concerns. In addition to the quality of its technical work, DVB’s success lies in its novel IPR policy and its ability to achieve consensus to resolve gateway issues.

Author(s):  
Budi Setiyanto ◽  
Risanuri Hidayat ◽  
I Wayan Mustika ◽  
Sunarno Sunarno

DVB-T2 (Digital Video Broadcasting Terrestrial Second Generation) reception requires a sufficient quality of the received signal. <em>CNR</em> (carrier-to-noise ratio) and <em>BER</em> (bit-error-rate) are two of quantities describing the quality. This paper presents the range of each quantity providing a successful reception based on real data obtained by field-measurements. This data was collected from MO (mobile-outdoor) and SI (stationary-indoor) receiving-systems capturing signal sent by some on-air trial transmitters broadcasting services focused on the fixed-receivers. The result indicated that the successful and failed receptions were split into two quite separated (concentrated) ranges of post-decoded <em>BER</em> and therefore a boundary distinguishing them could be prominently defined. In contrast, they were spread in a wide common range of <em>CNR</em> and pre-decoded <em>BER</em>. Furthermore, the boundary that corresponded to this last quantity was ambiguous. In the case of MO reception as numerical examples, the two split ranges of post-decoded <em>BER</em> were less than about 10<sup>-5</sup> and more than about 2.7 × 10<sup>-4</sup> for the successful and failed receptions, respectively, whereas <em>CNR</em> as high as about 14 dB could be viewed as a soft boundary distinguishing these both reception-success conditions.


Author(s):  
Konstantinos Kardaras ◽  
George I. Lambrou ◽  
Dimitrios Koutsouris

Background: In the new era of wireless communications new challenges emerge including the provision of various services over the digital television network. In particular, such services become more important when referring to the tele-medical applications through terrestrial Digital Video Broadcasting (DVB). Objective: One of the most significant aspects of video broadcasting is the quality and information content of data. Towards that end several algorithms have been proposed for image processing in order to achieve the most convenient data compression. Methods: Given that medical video and data are highly demanding in terms of resources it is imperative to find methods and algorithms that will facilitate medical data transmission with ordinary infrastructure such as DVB. Results: In the present work we have utilized a quantization algorithm for data compression and we have attempted to transform video signal in such a way that would transmit information and data with a minimum loss in quality and succeed a near maximum End-user approval. Conclusions: Such approaches are proven to be of great significance in emergency handling situations, which also include health care and emergency care applications.


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