Víctor Torres

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The management of multimedia information is a key issue when permissions, protection issues and rights are involved. The appearance of new multimedia description formats, new distribution channels and diverse business models makes it difficult to provide a general solution for performing such management. In this scenario, the description of architectures(More)
Multimedia information management, which implies all steps from creation and production to distribution and consumption, is a complex and challenging research area. To have a secure and trusted system we need to take into account aspects such as digital rights management (DRM), certification, control and security. As current solutions rely on proprietary(More)
The DRM interoperability problem is a very complex problem. Even big software companies have already admitted that DRM as it is today is too complex – complex for end-users, complex for content providers and complex for content handling devices manufactures. There are different approaches to deal with this problem and there are different levels to address(More)
Secure and trusted distribution of multimedia content is a key issue for content creators, content providers and distributors, as they want to fight piracy and receive the revenues derived from their creativity work. The provision of trust and protection has not been already solved by the existing multimedia distribution mechanisms. Such mechanisms lie on(More)
We present an innovative architecture that enables the digital representation of original works and derivatives while implementing Digital Rights Management (DRM) features. The architecture's main focus is on promoting trust within the multimedia content value networks rather than solely on content access and protection control. The system combines(More)
This article offers an analysis of the various methods for implementing interoperable digital rights management platforms. O ne of the most perfect examples of interoperability in the IT world is the Internet. The Internet is a heterogeneous environment in terms of hardware, architec-tures, and systems; every hardware device or application can exchange(More)
We present a mid-infrared inductor that when applied to an extraordinary transmission hole array produces a strong redshift of the resonant peak accompanied by an unprecedented enlargement of the operation bandwidth. The importance of the result is twofold: from a fundamental viewpoint, the direct applicability of equivalent circuit concepts borrowed from(More)
This research paper proposes a novel scaling free CORDIC algorithm to operate in vectoring mode which computes absolute magnitude and phase angle of input vector. Using this algorithm, the micro rotation of the vector is unidirectional and totally scaling free. The range of convergence is successfully extended to cover entire coordinate space without(More)