Timeline of Communication Systems: Introduction The timeline of communication systems presents a chronological overview of the most important events in the history of communication systems from the 4th millennium B.C. to the present. It shows that from the very beginning - the first Sumerian pictographs on clay tablets to today's state-of-the-art technologies - broadband communication via fiber-optic cables and satellites - the amount of information collected, processed and stored, the capabilities to do so, as well as the capable speed of information transmission exponentially accelerate.

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On-line Advertising and the Internet Content Industry Applied to on-line content the advertising model leads to similar problems like in the traditional media. Dependence on advertising revenue puts pressure on content providers to consider advertising interests. Nevertheless new difficulties caused by the technical structure of online media, missing legal regulation and not yet established ethical rules, appear.

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Economic rights The economic rights (besides moral rights and in some cases also neighboring rights) granted to the owners of copyright usually include 1) copying or reproducing a work, 2) performing a work in public, 3) making a sound recording of a work, 4) making a motion picture of a work, 5) broadcasting a work, 6) translating a work and 7) adapting a work. Under certain national laws some of these rights are not exclusive rights of authorization but in specific cases, merely rights to remuneration.

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Mark A mark (trademark or service mark) is "... a sign, or a combination of signs, capable of distinguishing the goods or services of one undertaking from those of other undertakings. The sign may particularly consist of one or more distinctive words, letters, numbers, drawings or pictures, emblems, colors or combinations of colors, or may be three-dimensional..." (WIPO) To be protected a mark must be registered in a government office whereby generally the duration is limited in time, but can be periodically (usually every 10 years) renewed.

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