Satellite television is a service that delivers programming to viewers by relaying it from communications satellite orbiting the Earth directly viewer's location. The signals are received via an outdoor parabolic antenna commonly referred as dish and low-noise block down converter. A receiver then decodes desired programme for viewing on set. Receivers can be external set-top boxes, or built-in...

Multi-receiver public key encryption is important in insecurity and open network environment and has been applied in many scenarios such as first pay television system, streaming media services and so on. To avoid costly management of certificate and settle the matter of key escrow, we combine multi-receiver public key encryption with certificateless cryptography, and then present the notion, s...

A new architecture is presented for a single-chip tuner for digital terrestrial television, based on existing double conversion and direct conversion topologies. The new design forms part of a mixed-signal Digital Video Broadcasting–Terrestrial (DVB-T) receiver system, employing digital signal processing at baseband to ensure minimal performance requirements for the analog circuitry. To evaluat...

A synthetic aperture radar is considered, located on a geosynchronous receiver and illuminated by the backscattered energy of satellite broadcast digital audio or television signals. The principal application of such a passive system could be differential interferometry, since even low spatial resolution coupled to zero baseline would be useful; however, other imaging applications could be envi...

An image enhancement algorithm for low-vision television viewing was developed. The algorithm enhances the images in the JPEG/MPEG domain by weighting the quantization table. The advantages of our algorithm are threefold: (1) Low computation (only a change of the 8× 8 quantization table in the decoding stage); (2) Suitable for real–time application; and (3) easily manipulated by individual user...

Non-desktop devices, in particular entertainment consumer products, are evolving into advanced interactive multimedia terminals, generating a new set of requirements for their user interface software architecture. Thus, traditional approaches used in desktop computers have to be reconsidered. This thesis proposes a graphics architecture model and presents the experiences of applying it for the ...

You may use this document for any personal or educational purpose. For-profit use requires my permission. Provided "as is" without expressed or implied warranty. Summary Searching for the Holy Grail is the difficult quest for a successful business model of ITV or the content (almost used as a mythical concept) of successful ITV (trigger applications etc) without clearly knowing what one is look...

establishing and operating private radio and television and its possible activity beside state radio and television is the selective method of administering radio and television in many countries worldwide. in legal system of iran, state run radio and television in article 44 of the constitution and interpretation of guardian council of mentioned article, establishing private radio and televisi...