AbonnementLe mot abonnement se réfère de manière générale à une souscription convenue entre un prestataire et un bénéficiaire pour un même service proposé en plusieurs fois ou sur une période donnée. Il peut renvoyer à plusieurs notions : Commande d'un lecteur à un éditeur de presse portant sur plusieurs parutions pour un titre donné ; Commande d'un spectateur à une entreprise de spectacles portant sur plusieurs représentations pour une saison donnée ; Commande d'un voyageur à une entreprise de transport portant sur l'acquisition d'un titre de transport valable pour une période donnée ou pour un nombre de courses définies.
Ghosting (television)In television, a ghost is a replica of the transmitted image, offset in position, that is superimposed on top of the main image. It is often caused when a TV signal travels by two different paths to a receiving antenna, with a slight difference in timing. Common causes of ghosts (in the more specific sense) are: Mismatched impedance along the communication channel, which causes unwanted reflections. The technical term for this phenomenon is ringing.
Public-access televisionPublic-access television (sometimes called community-access television) is traditionally a form of non-commercial mass media where the general public can create content television programming which is narrowcast through cable television specialty channels. Public-access television was created in the United States between 1969 and 1971 by the Federal Communications Commission (FCC), under Chairman Dean Burch, based on pioneering work and advocacy of George Stoney, Red Burns (Alternate Media Center), and Sidney Dean (City Club of NY).
Local insertionIn broadcasting, local insertion (known in the United Kingdom as an opt-out) is the act or capability of a broadcast television station, radio station or cable system to insert or replace part of a network feed with content unique to the local station or system. Most often this is a station identification (required by the broadcasting authority such as the U.S. Federal Communications Commission), but is also commonly used for television or radio advertisements, or a weather or traffic report.
Cable modem termination systemA cable modem termination system (CMTS, also called a CMTS Edge Router) is a piece of equipment, typically located in a cable company's headend or hubsite, which is used to provide high speed data services, such as cable Internet or Voice over Internet Protocol, to cable subscribers. A CMTS provides many of the same functions provided by the DSLAM in a DSL system. In order to provide high speed data services, a cable company will connect its headend to the Internet via very high capacity data links to a network service provider.
