Information technologies and, in particular, free satellite tv also have strongly taken for a long time the major place in our daily life. The satisfaction of an increasing demand of the population on qualitative (in technical sense) TV is, undoubtedly, complex problem. Along with rapid development of satellite television projects, building of powerful transferring television centres, relaying lines of transfers, deployment of systems MMDS, building of systems free satellite tv occupies, rather extensive, a niche in the decision of the specified problem. First, creation free tv is economically attractive on today's, is far not idle time, the moment owing to possibility of attraction of off-budget investments. Secondly, satellite tv with success can solve a problem of maintenance of huge number of subscribers a qualitative television signal in the conditions of dense city building where conditions of reception from an aether are far ambiguous, and with use of fibre-optical technologies there is possible an association enough the remote and various areas on population density in large uniform user networks that is very important for the Russian open spaces. Besides, become far not each consumer of television services can now the user of systems of a direct satellite announcement.

          As the number telebroadcasting free satellite tv channels, both radio, and satellite, constantly increases, not far off an era digital free TV, with its huge information potential, quality sat systems becomes one of the major parametres. The working range of frequencies of 47-230 MHz became obviously insufficient. Its expansion at least to 860 MHz is necessary. Besides, it is already not enough to have only an information stream "downwards", i.e. towards the subscriber. For diagnosing of a condition of system free satellite tv and monitoring presence of an "ascending" information stream towards the head equipment is necessary. Besides, by granting to subscribers of additional services.

Thus, the question on designing and building of broadband, interactive cable networks is actual for today.

Construction principles satellite tv

             The analysis of principles of construction of modern systems free satellite tv shows, that one of mainstreams of their development are association and integration of isolated small networks with simultaneous increase in number broadcast free satellite channels and granting to subscribers of other information services (except broadcasting of TV-programs). It can be connection to a telephone system, transfer systems viewsat files, access to Internet, gathering of the information from a different sort of gauges and a number of other services. All it as it was spoken above, conducts to expansion of a spectrum of the frequencies occupied in a network with transferred signals. And necessity of maintenance of high quality of a signal at the subscriber makes corresponding demands to the head, main and user's equipment.

If at the decision of the above-named problems to be guided by the traditional environment for signaling free satellite tv from head station to subscribers - a coaxial cable to realise in practice all these requirements it is possible only under condition of an expense of very considerable means.

The matter is that expansion of a strip of broadcast frequencies (number increase fta satellite channels) demands application of the main amplifiers with the raised resulted dynamic range (that is smaller factor of strengthening at the set level target satellite a signal). And decrease in factor of strengthening of in cascade included amplifiers causes increase in their number that results not only in decrease in the final relation a signal/noise, but also to reduction of the relation a signal / a combinational hindrance at the expense of accumulation of "collateral" frequency products on a highway. Owing to it the maximum number of consistently included main amplifiers cannot exceed certain quantity (usually no more than 7-10) which depends on a dynamic range and noise characteristics of concrete type of amplifiers. Accordingly, it imposes restrictions and on possible length of a highway. And it, in turn, leads to necessity to increase quantity of head stations satellite tv, subscribers serving certain number. If to consider, that cost of one channel of head station of the second class makes a $0,5-1,0 thousand order, it becomes clear, that the increase in number of channels except purely technical problems causes also financial difficulties.

These problems can be solved, having replaced the main coaxial cable on the fiber-optical. On this way the majority of the countries of Europe, the USA and Japan has gone. We will list short main principles of construction of modern networks free satellite tv

Isolated networks satellite TV are integrated, forming the integrated systems of a cable television;

As system basis free satellite TV the head station (for example manufactures of firms Barco, IKUSI, Blancom, WISI, TERRA), providing translation in a cable network as TV-signals of all kinds (satellite, radio, digital), and radio programs (including stereophonic) serves;

The basic transport highways of system in direct and return directions are fiber-optical communication lines of high throughput which provide signalling of all kinds from head station to places of residing or work of subscribers of system satellite fta tv;

To subscribers of system various services of interactive service (a telephony, telex communication, access possibility to Internet and other kinds of communication) are rendered, that is provided with a corresponding choice of the head and main equipment satellite tv networks (first of all quality and presence of the return channel) and necessary user's terminals;

Fast development of technologies free satellite tv (first of all what are connected with perspective digital methods of modulation, time and frequency consolidation of signals) opens the broadest possibilities for transfer of various types of information with use of the flexible hybrid information environment. The modern cable network should provide transfer viewsat files with a speed some honeycombs of Mbit.

The basic services of interactive service at an initial stage are the telephony and access in Internet;

The head station should incorporate the built in equipment of the control and system monitoring;

Let's underline especially a principle of modular designing of large networks free tv. At construction of the big systems which can be created by simultaneously different groups of developers and when it is necessary to provide functional compatibility of various parts, flexibility and possibility of improvement of parametres without radical reconstruction and functioning infringement, it is expedient to use methods of blochno-modular designing free satellite tv.

Pentru a functiona si pe calculatorul vostru trebuie sa aveti instalat Windows Media Player 10 si plugin-ul Sopcast Tv-U View TV.

- Sopcast TV-U View TV plugin 4.9 sau 2 - aici sau 3 - aici sau 4 - aici ( compatibil Windows XP si Vista )
- Windows Media Player v.10 (in cazul in care aveti Windows Vista nu mai este necesara instalarea lui)
- WMP Pixelfusion Plugin este un plugin WMP ce imbunatateste imaginea redata de tv online - il gasiti aici.
- VLC Web Player ( necesar la unele posturi TV ).

Pentru Full Screen, apasati dublu click pe imagine. Pentru a reveni la marimea normala a ferestrei apasati butonul ESC de la tastatura.
Cerinte: Conexiunea minima necesara este de 512 Kbps (recomandat 1,5 Mbps) si asteptati intre 10 - 60 secunde pana ce se initiaza conexiunea !

Home Box Office Inc (HBO) este un canal TV pentru televiziunea prin cu sediul central în New York City. HBO difuzează filme cinematografice, filme originale de televiziune precum şi seriale TV originale.
Printre serialele HBO cu succes la public se pot enumera: Oz, Sex and the City, The Sopranos, Curb Your Enthusiasm, Six Feet Under, Carnivàle, Deadwood, Entourage, Band of Brothers, Rome şi Extras (ultimele trei sunt colaborări cu BBC). HBO difuzează de asemenea meciuri de box sub numele HBO Boxing şi B.A.D. (Boxing After Dark).

HBO a fost primul canal TV care a fost difuzat numai în reţelele de TV. În realitate, totul a început în 1965, după ce vizionarul Charles Francis Dolan a câştigat o franciză care îi permitea constuirea unei reţele de în Manhattan. Noua reţea de numită Sterling Manhattan Cable by Mr. Dolan a fost prima reţea urbană din Statele Unite ale Americii care avea l împământat. În loc să întindă l pe stâlpii de telefon şi să folosească antenele cu microunde pentru a recepţiona semnalele, Sterling a îngropat rile sub străzile din Manhattan, asta pentru că semnalele TV erau blocate de clădirile înalte (zgârie-nori). Time Life Inc., a cumpărat în acelaşi an 20% din compania lui Dolan.

La începutul anilor 1970, căutând surse noi de profit, lui Dolan i-a venit ideea să creeze un canal "curat" pentru care abonaţii să platească o taxă suplimentară pentru a primi filme care să nu fie întrerupte de reclame precum şi evenimente sportive. Pentru a reuşi să materializeze acest proiect, Dolan l-a angajat pe tânărul avocat Gerald Levin, care avea experienţă în contractarea filmelor şi evenimentelor sportive pentru televiziuni, ca vice-preşdinte al departamentului de programe

Dolan a prezentat ideea lui de "canal curat" conducerii Time Life. Deşi ideea unei distribuţii prin satelit părea să fie o metodă avangardistă în acel moment, a reuşit să convingă Time Life să îl sprijine. Astfel, "canal-ul curat" a devenit Home Box Office în 8 noiembrie 1972. HBO a început prin a folosi microundele pentru a distribui programele operatorilor de CATV. Primul program difuzat prin intermediu canalului plătit a fost un meciul dintre New York Rangers / Vancouver Canucks, în reţeaua CATV din Wilkes Barre, Pennsylvania.
Sterling Manhattan Cable pierdea bani într-un ritm rapid datorită numărului mic de abonaţi (20.000 în Manhattan). Partenerul media al lui Dolan, Time Life, Inc., a câştigat astfel controlul asupra a 80 de procente din compania lui Sterling şi a încercat să oprească aceste pierderi operaţionale ale Sterling Manhattan. Time Life a renunţat la numele Sterling, reţeaua devenind Manhattan Cable Television şi a obţinut controlul asupra HBO în martie 1973. Gerald Levin l-a înlocuit pe Dolan ca preşedinte al HBO. În septembrie 1973, Time Life, Inc. a cumpărat în totalitate drepturile asupra acestui serviciu. HBO era difuzat în 14 sisteme de CATV din New York şi Pennsylvania, dar rata de renunţare la abonament era excepţional de ridicată. Abonaţii încercau serviciul pentru câteva săptămâni, se plictiseau să vadă aceleaşi filme şi astfel renunţau la serviciu. HBO se chinuia să supravieţuiască şi trebuia neapărat făcut ceva pentru a schimba situaţia. Când HBO a ajuns în Lawrence, Massachusetts, a permis abonaţilor să vada gratis programul pe canalul 3. După o lună, programul a fost mutat pe canalul 6 şi a fost codat. Perioada de gratuitate s-a dovedit a fi foarte populară ducând la multe abonamente, conceptul fiind folosit mai apoi în toate celelalte localităţi.
În 1975, HBO devine primul program de televiziune care emite prin satelit când a difuzat "Thrilla in Manila", meciul de box dintre Muhammad Ali şi Joe Frazier. În 28 decembrie, 1981, HBO îşi extinde grila de programe la 24 de ore pe zi, şapte zile pe săptămână. (Cinemax emitea 24/7 de la înfiinţare iar Showtime şi The Movie Channel au trecut la emisie continuă mai devreme.) În ianuarie 1986, HBO devine şi prima reţea de televiziune care îşi criptează semnalul pentru a împiedica vizionarea neautorizată prin intermediul sistemului Videocipher II. Mai târziu, HBO a fost unul dintre primele canale TV care să emita programe de înaltă definiţie.
Iniţial HBO era o parte din Time Inc.. Atunci când Time a fuzionat cu Warner Communications în 1989, a devenit parte a Time Warner, care este şi acum proprietar.
HBO administrează de asemenea reţeaua Cinemax, care este specializată mai mult pe filme şi mai puţin pe seriale originale.