The Experts below are selected from a list of 276 Experts worldwide ranked by ideXlab platform
Dariusz Frejlichowski - One of the best experts on this subject based on the ideXlab platform.
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ICIAR (2) - Recognition of trademarks during sport Television Broadcasts
Lecture Notes in Computer Science, 2011Co-Authors: Dariusz FrejlichowskiAbstract:In the paper the problem of the recognition of trademarks placed on banners which are visible during a sport Television Broadcast is described and experimentally investigated. It constitutes the second stage of the process of the analysis of the banners, e.g. in order to estimate the time that a particular banner is visible and can exert influence on the customers' behaviour. Banners placed near a play field during football matches were analysed. For this task four algorithms were selected and tested, namely the UNL shape descriptor combined with the Partial Point Matching Algorithm, the Contour Sequence Moments, the UNLFourier descriptor and the Point Distance Histogram. Amongst them the best result was obtained when using the UNL + PPMA approach. The average efficiency of this method was equal to 84%.
Lajos Hanzo - One of the best experts on this subject based on the ideXlab platform.
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a survey of digital Television Broadcast transmission techniques
IEEE Communications Surveys and Tutorials, 2013Co-Authors: Mohammed Elhajja, Lajos HanzoAbstract:This paper is a survey of the transmission techniques used in digital Television (TV) standards worldwide. With the increase in the demand for High-Definition (HD) TV, video-on-demand and mobile TV services, there was a real need for more bandwidth-efficient, flawless and crisp video quality, which motivated the migration from analogue to digital Broadcasting. In this paper we present a brief history of the development of TV and then we survey the transmission technology used in different digital terrestrial, satellite, cable and mobile TV standards in different parts of the world. First, we present the Digital Video Broadcasting standards developed in Europe for terrestrial (DVB-T/T2), for satellite (DVB-S/S2), for cable (DVB-C) and for hand-held transmission (DVB-H). We then describe the Advanced Television System Committee standards developed in the USA both for terrestrial (ATSC) and for hand-held transmission (ATSC-M/H). We continue by describing the Integrated Services Digital Broadcasting standards developed in Japan for Terrestrial (ISDB-T) and Satellite (ISDB-S) transmission and then present the International System for Digital Television (ISDTV), which was developed in Brazil by adopteding the ISDB-T physical layer architecture. Following the ISDTV, we describe the Digital Terrestrial Television Multimedia Broadcast (DTMB) standard developed in China. Finally, as a design example, we highlight the physical layer implementation of the DVB-T2 standard.
Mohammed Elhajja - One of the best experts on this subject based on the ideXlab platform.
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a survey of digital Television Broadcast transmission techniques
IEEE Communications Surveys and Tutorials, 2013Co-Authors: Mohammed Elhajja, Lajos HanzoAbstract:This paper is a survey of the transmission techniques used in digital Television (TV) standards worldwide. With the increase in the demand for High-Definition (HD) TV, video-on-demand and mobile TV services, there was a real need for more bandwidth-efficient, flawless and crisp video quality, which motivated the migration from analogue to digital Broadcasting. In this paper we present a brief history of the development of TV and then we survey the transmission technology used in different digital terrestrial, satellite, cable and mobile TV standards in different parts of the world. First, we present the Digital Video Broadcasting standards developed in Europe for terrestrial (DVB-T/T2), for satellite (DVB-S/S2), for cable (DVB-C) and for hand-held transmission (DVB-H). We then describe the Advanced Television System Committee standards developed in the USA both for terrestrial (ATSC) and for hand-held transmission (ATSC-M/H). We continue by describing the Integrated Services Digital Broadcasting standards developed in Japan for Terrestrial (ISDB-T) and Satellite (ISDB-S) transmission and then present the International System for Digital Television (ISDTV), which was developed in Brazil by adopteding the ISDB-T physical layer architecture. Following the ISDTV, we describe the Digital Terrestrial Television Multimedia Broadcast (DTMB) standard developed in China. Finally, as a design example, we highlight the physical layer implementation of the DVB-T2 standard.
Winston M Caldwell - One of the best experts on this subject based on the ideXlab platform.
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Broadcast Television spectrum incentive auctions in the u s trends challenges and opportunities
IEEE Communications Magazine, 2015Co-Authors: David Gomezbarquero, Winston M CaldwellAbstract:This article presents an overview of the upcoming Television Broadcast spectrum incentive auction in the U.S., which will be the first ever attempted worldwide, and discusses the main business, regulatory, and technical challenges of a successful incentive auction. The process combines two separate but linked auctions: a reverse auction, which will identify the prices at which Broadcasters are willing to relinquish their spectrum; and a forward auction, which will determine the price mobile network operators are willing to pay to acquire the new frequencies. The two auctions will determine the buyers and sellers and also the amount of spectrum to be cleared in the 600 MHz band after reorganizing the Television stations that remain on air. This process is known as repacking and will create contiguous blocks of cleared spectrum at the high frequency side of the UHF band for mobile use. The article also reviews the potential plans for the 600 MHz band and discusses the opportunities that could bring about the new digital terrestrial Television standard known as “ATSC 3.0.”
James R. Redford - One of the best experts on this subject based on the ideXlab platform.
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Television Broadcast Transmission Standards
Encyclopedia of RF and Microwave Engineering, 2005Co-Authors: Alan S. Godber, James R. RedfordAbstract:Since the invention of Television, images and sound have been captured, processed, transmitted, received, and displayed using analog technology, where the picture and sound elements are represented by signals that are proportional to the image amplitude and sound volume. In more recent years, as solid-state technology has developed, spurred primarily by the development of computers, digital technology has gradually been introduced into the handling of the Television signal, both for image and sound. Many portions of Television systems are now hybrid combinations of analog and digital, and it is expected that eventually all Television equipment will be fully digital, except for the transducers, cameras, and microphones (whose inputs are analog) and the Television displays and loudspeakers (whose outputs are analog). Keywords: rate conversion; common image format; scanning; analog Television; packets
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Television Broadcast Transmission Standards
Encyclopedia of Imaging Science and Technology, 2002Co-Authors: Alan S. Godger, James R. RedfordAbstract:Since the invention of Television, the images and sound have been captured, processed, transmitted, received, and displayed using analog technology, where the picture and sound elements are represented by signals that are proportional to the image amplitude and sound volume. More recently, as solid-state technology has developed, spurred primarily by the development of computers, digital technology has gradually been introduced into handling the Television signal, both for image and sound. The digital electric signal representing the various elements of the image and sound is composed of binary numbers that represent the image intensity, color, and so on, and the sound characteristics. Many portions of Television systems are now hybrid combinations of analog and digital, and it is expected that eventually all Television equipment will be fully digital, except for the transducers, cameras, and microphones (whose inputs are analog) and the Television displays and loudspeakers (whose outputs are analog). The currently used Broadcast Television transmission standards [National Television Systems Committee (NTSC), phase alternate line (PAL) and sequential and memory (SECAM)] for 525- and 625-line systems were designed around analog technology, and although significant portions of those Broadcast systems are now hybrid analog/digital or digital, the “over the air” transmission system is still analog. Furthermore, other than for “component” processed portions of the system, the video signals take the same “encoded” form from studio camera to receiver and conform to the same standard. The recently developed ATSC Digital Television Standard, however, uses digital technology for “over the air” transmission, and the digital signals used from the studio camera to the receiver represent the same image and sound, but differ in form in portions of the transmission system. This variation is such that in the studio, maximum image and sound information is coded digitally, but during recording, special effects processing, distribution around a Broadcast facility, and transmission, the digital signal is “compressed” to an increasing extent as it approaches its final destination at the home. This permits practical and economical handling of the signal. Keywords: analog TV; black and white TV; multichannel sound; NTSC color TV; sequential and memory (SECAM); phase alternate line (PAL); component analog video; digital video; advanced TV systems; japanese systems; european systems
