WO2010057664A2 - Dispositif de réception et de distribution satellite servant de station de tête comportant une conversion de transpondeur programmable de blocs de transpondeurs - Google Patents

Dispositif de réception et de distribution satellite servant de station de tête comportant une conversion de transpondeur programmable de blocs de transpondeurs Download PDF

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Publication number
WO2010057664A2
WO2010057664A2 PCT/EP2009/008309 EP2009008309W WO2010057664A2 WO 2010057664 A2 WO2010057664 A2 WO 2010057664A2 EP 2009008309 W EP2009008309 W EP 2009008309W WO 2010057664 A2 WO2010057664 A2 WO 2010057664A2
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WO
WIPO (PCT)
Prior art keywords
satellite
transponder
lnb
converter
converters
Prior art date
Application number
PCT/EP2009/008309
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German (de)
English (en)
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WO2010057664A3 (fr
Inventor
Bernd Kürten
Original Assignee
Christian Schwaiger Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Christian Schwaiger Gmbh filed Critical Christian Schwaiger Gmbh
Priority to EP09809057A priority Critical patent/EP2359508A2/fr
Priority to CA2744274A priority patent/CA2744274C/fr
Priority to US13/130,167 priority patent/US8656436B2/en
Publication of WO2010057664A2 publication Critical patent/WO2010057664A2/fr
Publication of WO2010057664A3 publication Critical patent/WO2010057664A3/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/61—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast
    • H04H20/63—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast to plural spots in a confined site, e.g. MATV [Master Antenna Television]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H40/00—Arrangements specially adapted for receiving broadcast information
    • H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
    • H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
    • H04H40/90—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for satellite broadcast receiving

Definitions

  • the invention relates to a device for freely programmable conversion of 1 to m transponder in n transponder blocks of a satellite receiving and distribution system (claim 1).
  • DVB-S Digital Video Broadcasting - Satellite
  • Astra Easterntelsat
  • DVB-S Digital Video Broadcasting - Satellite
  • the advantage is that in satellite television due to the large bandwidth most television and radio programs and additional services can be transmitted. As an example, more than 1500 radio and TV programs are transmitted via the Astra satellites alone, of which around 200 programs are unencrypted.
  • DVB-C cable
  • DVB-T terrestrial
  • DVB-S satellite
  • DVB-S sometimes even serves as a data supplier for the cable networks (analog and digital) or DVB-T and contains optimizations for the satellite-specific properties (eg missing reflections, rather poor signal-to-noise ratio) during the transmission of digital data.
  • MCPC Multiple Channel per Ca ⁇ ier
  • SCPC Single Channel Carrier
  • DVB-S2 is a further development of the DVB-S standard and increases the data rate by up to 30% through the use of improved coding, modulation and error correction methods.
  • DVB-S2 optionally uses 8PSK, 16APSK or 32APSK modulation instead of 4PSK (QPSK) with DVB-S.
  • the adaptation (ACM Adaptive Control Modulation) is optionally carried out by feedback of the reception quality by means of reference receiver, whereby the modulation can be changed in poor reception position, in order to avoid a Empfangsabbruch.
  • the 8PSK modulation requires a higher carrier to noise ratio (CNR) of about 3 dB, which is partially offset by the more efficient error correction code LDPC.
  • CNR carrier to noise ratio
  • ground stations In satellite television, ground stations first transmit relatively large parabolic antennas to the satellite transcoded into signals to the satellite (so-called uplink), the frequency range is between ten and 13 gigahertz. The signals are received by the satellite in a receiving unit and forwarded to the transmitting unit (transponder uplink) of the satellite.
  • Typical television satellites eg Astra satellites, are capable of receiving and transmitting at least 16 TV programs and the associated sound.
  • the satellites emit radiation at various levels. Common here are the emissions on a horizontal and a vertical plane and the division into a lower frequency band L of 10.7 to 11.7 GHz and an upper frequency band H of 11.7 to 12.75 GHz.
  • the individual Astra satellites are with each other only a few kilometers (about 140 kilometers) away from each other. Due to the long distance to the earth (36,000 kilometers), the distance between the satellites "shrinks" to practically one point - this is located at the position 19.2 ° East, which has two main advantages:
  • the system can be easily received with a single antenna
  • the transponders send the signals to the receiving stations on earth (so-called downlink, Ku band: 10,700 MHz to 12,750 MHz).
  • downlink In cable television, these are large ground stations that are connected to the cable network and feed the corresponding broadcasts into this network.
  • DTH direct-to-home satellite broadcasting
  • the reception system consists essentially of a parabolic antenna ("satellite dish") and a satellite receiver (the receiver), using a transmission and reception technique based on polarized waves (waves propagate only in one direction (vibration plane)).
  • the converter which is also referred to as LNB (Low Noise Block) or LNC (Low Noise Converter) amplifies and converts the satellite signals from the high frequency range in a lower intermediate frequency range from 950 to 2150 MHz.
  • LNB Low Noise Block
  • LNC Low Noise Converter
  • a switching device is in satellite reception systems - a so-called “multiswitch” or “multiswitch” or a
  • a switch matrix formed in the multiswitch connects the respective subscriber in accordance with the pending control signal to the corresponding input of the multiswitch.
  • twin converter arrangements or multifeed installations that is, squinting satellite receiving installations
  • squinting satellite receiving installations which consist of a mirror, the multifeed holder and at least two LNBs. It is thus possible for subscribers to be able to receive programs independently of one another which are broadcast via one or the other polarization in a lower or upper frequency band or two or more satellites (eg Astra 19.2 ° E and Hotbird 13 0 E ) to recieve.
  • Each satellite requires its own LNB, which is mounted on a multifeed holder. Depending on the satellite, the distance between the LNBs must also be sized accordingly. If only two satellites are received, you can also use monoblock LNBs.
  • a mono-block LNB has two horns, which have exactly the same distance (eg 6 ° or 3 °) to the satellites to be received, and often also have an integrated multi-switch, so that multiple receivers can be connected independently.
  • Satellite headends also called satellite headends, are part of satellite distribution systems. Distribution systems can be designed for up to several 10,000 subscriber lines (cable TV). At the end, the user gets the programs in the usual TV and radio channels via his antenna socket in the apartment.
  • Headend is generally understood to mean the entire receiving system, including terrestrially received radio and television programs. For this reason, manufacturers usually offer not only components for satellite signal processing, but also the building blocks for the distribution and / or processing of terrestrial TV and radio programs.
  • a headend refers to a facility for receiving radio and television programs for retransmission to end users.
  • the headend can be constructed in different sizes, from the small plant for multi-family houses to the supply of several cities, counties and districts, so up to several hundred thousand housing units.
  • the headend is in the order of the lattice levels in the cable network at serial number 2.
  • further signals for bidirectional services such as Internet or telephony (TriplePlay) can be mixed in advance (downstream) and received from the return channel (upstream) in the headend.
  • TriplePlay Internet or telephony
  • a head end is thus an alternative to the S AT-ZF distribution.
  • the SAT signals after implementation in a lower frequency range (SAT-IF) distributed over multi-switch (systems) to up to several dozen participants. Required in this case is always an additional satellite receiver.
  • the SAT block distribution is a frequently used variant of building cabling, in which a radio reception system allows the joint operation of several satellite receivers on one or more satellite antennas.
  • the main task is to distribute the signals provided by the LNB (and possibly existing terrestrial antennas) to the individual subscribers.
  • each SAT receiver eg digital receiver
  • the connection structure is star-shaped.
  • Alternatives to this are the single-cable system and Unicable distribution (standard for distribution of satellite TV signals).
  • a preselection usually selects the Astra high-band with 11.75 - 12.75 GHz horizontal as base frequency band, this already enables the reception of approx. 300 German-language radio and TV programs.
  • Other additional transponders of other satellite levels are copied by frequency converter in the base ZF band, but such is optional because of the concentration of German satellite programs on Astra Horizontal High.
  • An emerging RF signal can then be distributed without remote supply and control signals in an arbitrarily structured antenna system in extensive residential complexes via a single coaxial cable (no rewiring necessary).
  • Unicable With Unicable several receivers are connected to a single derivation, which is not possible with SAT block distribution. Unlike common single-cable systems with limited program selection, Unicable offers the full program spectrum.
  • the selection of a transponder to be received takes place in the case of a Unicable distribution by DiSEqC control signals, which are transmitted as a superimposition of the remote supply voltage to the LNB / Unicable Multi switch via the coaxial cable.
  • DiSEqC control signals which are transmitted as a superimposition of the remote supply voltage to the LNB / Unicable Multi switch via the coaxial cable.
  • the channel router contained in the Unicable LNB or Unicable multiswitch only provides the transponder required for reception ready.
  • DVB-S receivers can be operated on one coaxial cable, which enables simple cabling in line topography (series connection of the antenna sockets).
  • Unicable offers an unlimited range of programs and is particularly suitable for retrofitting existing flats with satellite TV.
  • An existing coaxial cable in the apartment with series-connected antenna sockets can be used, with several DVB-S receiver only an antenna replacement in the apartment is required.
  • each receiver has a specific frequency (UserBand) in the SAT frequency range (950 - 2150 MHz).
  • a receiver of the distribution unit LNB or multi-switch
  • LNB Low-Node Band
  • the transponder is then modulated onto the UserBand of the receiver.
  • special DiSEqC switching signals are required, which is why only DVB-S receivers that support this standard work in such a system.
  • a Unicable LNB can usually provide a maximum of four satellite receivers with signal. The connection of up to 16 receivers is possible, which is not standardized and requires special receivers.
  • the Unicable functionality can be integrated into multiswitches instead of the LNB. This allows a mixed distribution network (conventional distribution and Unicable), which allows an extensive distribution network and is particularly suitable for bridging the last meter antenna line in a condominium from the stairwell into apartments (where almost exclusively only one antenna line is available).
  • a Unicable-LNB receives the satellite signals in the same way as a conventional LNB: the four different frequency bands, vertical / low band, horizontal / low band, vertical / high band and horizontal / high band are each amplified low noise and into the SAT IF Band down mixed. They encounter a built-in multi-switch, which selects the desired reception level for each receiver. For each connectable receiver, there is now a so-called SCR Satellite Channel Router (SCR). It uses an adjustable frequency generator (VCO) to mix down the transponder selected by the respective receiver to its UserBand frequency. Subsequently, the signal is filtered and fed with appropriate gain in the coaxial cable. The whole process is controlled by a central microcontroller "which decodes the DiSEqC commands the receiver.
  • VCO adjustable frequency generator
  • Multiswitches have an additional input for the terrestrial signals.
  • an antenna switch or a so-called multi-range amplifier with the desired antennas is connected here.
  • Signals from the cable TV network can also be fed in the same way.
  • Through the multiswitch these signals are transmitted through the same cable to the antenna box as the satellite signals.
  • a suitable antenna socket so-called 3-hole socket
  • the different signals in the terminals can be used separately again.
  • the multichannel return channel capability is also required.
  • Special LNBs have a built-in multiswitch with four or eight outputs. Most are referred to as Quad-LNB or Quattro-Switch-LNB (4 outputs) or Octo-LNB (8 outputs).
  • the receivers can be connected directly to the LNB without an additional multi-switch.
  • Monoblock LNBs for cross-eyed installations can also have integrated multi-switches. Here you can operate a receiver on each output; the receivers work independently, i. anyone can receive analogue and digital TV programs without affecting the reception of the other receiver.
  • Such multi-switch LNBs are useful for community systems with few participants.
  • Another multiswitch can also be connected to such an LNB, provided that it outputs 14 and 18 V at its LNB inputs and the 22 kHz signal (with a digitally compatible device). Otherwise, the LNB would deliver only the vertical low band at all outputs.
  • the use of a Quattro LNB (without integrated multi-switch) is preferable. Better quality is to be expected with such a solution with Quattro LNB and external multi-switch, since the electronics are less closely installed, not exposed to all weather and the multi-switch usually has its own active power supply. It is also possible to distribute the signals of several satellites with a multi-switch.
  • the multi-switch has several LNB connections (thus again four inputs for each additional Quattro LNB). Switching to the respective LNBs is controlled by the receiver via a digital DiSEqC signal. It is irrelevant whether the second LNB is installed on the same SAT antenna (Multifeed) or on a second SAT antenna. You need an LNB per satellite; the use of motor-driven rotating antennas for multiple satellites is not possible in shared systems with multi-switch.
  • Cascadable multiswitches are multiswitches that also have an LNB output for each LNB input. The signals at the inputs are passed on unchanged to the outputs. At these outputs, another similar multi-switch is connected again. Cascadable multiswitches are used in large buildings such as blocks of flats. The typical installation consists of a SAT antenna and a cascadable multiswitch on each floor. From this lead the leads into the apartments of the floor and four coaxial cables to the multi-switch for the next floor, etc.
  • Applicant's EP 1 760 917 A1 discloses a method for configuring n independent subscribers of a satellite receiving system with an LNB receiving converter, a matrix, at least one multi-converter, at least one filtering device, a summer or crossover or controlled crossover or matrix with adder and at least one antenna line common to the subscribers and routed via junction boxes,
  • control signals transmitted via the respective antenna line are used to control the matrix, m multiplex converters arranged in parallel, and the controlled crossover network or matrix with adder, whereby
  • Levels to the output terminal of the matrix is switched high-frequency and ⁇ in the respective multi-converter a direct implementation of one of the in the
  • the assignment of the occupancy of the subscriber channels is carried out centrally, wherein the respective occupied subscriber channel is stored in a channel memory, in such a way that, when a new subscriber is put into operation, the group connected to a common antenna line is assigned an unoccupied subscriber channel, so that each of the subscribers can optionally receive programs on all satellite IF levels.
  • EP 1 760 917 A1 has the advantage that the entire program offer can be made available to each of the users in a surprisingly simple and cost-effective manner, without there being any danger that, when implementing the individual programs, these are no longer receivable.
  • larger antenna systems that have a great many antenna doses and / or multiple trunk lines, and in which more than one participant is connected per trunk, stands by the measure until the commissioning of a subscriber to assign this a frequency converter (multiple converter) with the appropriate output frequency , a cost effective solution available.
  • control signals transmitted via the respective antenna line control the matrix
  • m multiplexers arranged in parallel with one another and the controlled crossover or matrix with adder, whereby: one of the satellite IFs present at the output of the LNB receiver converter
  • Levels to the output terminal of the matrix is switched high-frequency and ⁇ in the respective multi-converter a direct implementation of one of the in the
  • EP 1 760 917 A1 the applicant describes an apparatus for configuring n independent subscribers of a satellite receiving system, which comprises:
  • Plane is present, a matrix connected to the outputs of the LNB receive converter which loops through the satellite IF planes,
  • Multiplexers arranged parallel to one another, which each have a first and a second mixing stage for the direct conversion of one of the reception channels lying in the satellite IF level into a subscriber channel which can be assigned to the subscriber,
  • a filtering device connected to the second mixing stage, a summer or crossover connected to the filtering devices or controlled crossover network for combining the subscriber channels, a control device for controlling the matrix and m parallel transducers arranged in parallel, and at least one, several subscribers common and over Outlets guided antenna cable, such that when commissioning a new subscriber of the group connected to a common antenna line, this an unoccupied subscriber channel is assigned, so that each of the participants can optionally receive programs on all satellite IF levels.
  • an apparatus described in EP 1 760 917 A1 of the Applicant for the configuration of n independent subscribers of a satellite receiving system has:
  • Level is applied, a first matrix connected to the outputs of the LNB receive converter which loops through the satellite IF levels,
  • Multiplexers arranged parallel to one another, which each have a first and a second mixing stage for the direct conversion of one of the reception channels lying in the satellite IF level into a subscriber channel which can be assigned to the subscriber,
  • ⁇ * means coupled to the filter means second matrix with adder ⁇ a control device for controlling the two matrices and the m mutually parallel multiple converters and ⁇ • in each case connected to the second matrix and the respective group of
  • Participants common and via outlets run antenna cables, such that when commissioning a new subscriber, this assigned an unoccupied subscriber channel from the m mutually parallel multi-converter and the second matrix is switched to the respective antenna line, so that each of the participants either programs on can receive all satellite IF levels.
  • a device described in EP 1 760 917 A1 of the Applicant has: an LNB receive converter at the outputs of which the respective satellite IF level is applied, a matrix connected to the outputs of the LNB receive converter which receives the satellite IF Levels through,
  • Multiplexers arranged parallel to one another, each having a first and a second mixing stage for the direct conversion of one of the reception channels lying in the satellite IF level into a subscriber channel assignable to the subscriber, a crossover connected to adders and switches, a control device for controlling the matrix, the crossover and the m parallel converters arranged parallel to each other, and the respective group connected to the crossover
  • a device described in EP 1 760 917 A1 of the applicant comprises: an LNB reception converter at whose outputs the respective satellite IF signals
  • Plane * ⁇ a first matrix connected to the outputs of the LNB receive converter which loops through the satellite IF planes,
  • Multiplexers arranged parallel to one another, which in each case have a first and a second mixing stage for direct conversion of one of the reception channels lying in the satellite IF level into a subscriber channel which can be assigned to the subscriber,
  • ⁇ a filter connected to the second mixer stage, ⁇ a second matrix with adder connected to the filter means, ⁇ a controller for controlling the two matrices and the m parallel converters and ⁇ connected to the second matrix and the respective group of
  • Participants common and via outlets run antenna cables, such that when commissioning a new subscriber, this assigned an unoccupied subscriber channel from the m mutually parallel multi-converter and the second matrix is switched to the respective antenna line, so that each of the participants either programs on can receive all satellite IF levels.
  • the same groups of participants can be occupied at the same time in the different groups, whereby the group-wise occupancy of a respective antenna cable makes it possible to expand one of the groups at any time until it is fully equipped, without this simultaneously being a reprogramming in one of the other groups.
  • a software update in the control device at any time the desired configuration can be made and it can be a subscriber-side manipulation reliably avoided by the controller checks before each change the authorization for this.
  • This central dynamic assignment of the assignment reliably avoids access conflicts and allows the desired configuration at any time, including the possibility of remote configuration and / or remote diagnosis (via ISDN, WAN, LAN, Internet) and / or blocking of certain frequencies (fee-based channels of service providers or as kind of child protection ).
  • the continuous reconfiguration of the occupancy state is "frozen", whereby the user can verify the proper operation of the satellite receiver at all times by direct visual inspection: the "freeze occupancy state", ie quasi-static operation of the system has the advantage that the times for evaluating an access request or documents of the subscriber channel can be significantly shortened.
  • a transponder selection is made compatible with satellite receivers in the market from DE 20 2007 017 295 Ul the applicant a satellite reception and distribution system in the home with wireless and wired transmission links and feeding multiple transponders, which comprises: > a satellite antenna with at least one LNB receive converter at its
  • Multi-switch, ⁇ at least one first transmitting and receiving device connected to the multi-switch and a first antenna, and at least one second transmitting and / or receiving device connected to a second antenna
  • Receiving device which is connectable to the user-side receiving device, such that a user-side flexible assignment and controlled transmission of transponders for each of the user-side receiving devices is made possible.
  • This satellite receiving and distribution system according to the applicant's DE 20 2007 017 295 U1 has the advantage that in a surprisingly simple and cost-effective manner a wireless TV transmission by W-LAN standard (preferably 802.1 In) with in particular Unicable protocol is possible. Furthermore, it is advantageous that a retrofittable W-Lan "transmitter” can be connected directly to an antenna socket or to the multiswitch Further advantages are the connection of a Plug + Play "receiver" with Unicable STB or a notebook, in particular with 802.1 In W -Lan and appropriate software.
  • the transponder information originating from the user-side receiving device assumes the control of the multi-switch (eg, IF level selection) via a control device (MS control).
  • the first transceiver has a transceiver connected to the first antenna and a demodulator and tuner connected thereto, which is connected to the multiswitch.
  • the second transceiver has a transceiver connected to the second antenna, which is connected to both a modulator and a decoder, and that modulator and decoder are connected to the user-side receiver.
  • an antenna receiving system with a device for selecting and converting channels of multiple antennas and / or polarization planes and for decoupling desired channels on a house connection cable through which the channels are fed to the participants.
  • the device is designed as a rearrangement device for rearranging the channels within the entire available frequency band, wherein an intersection of the channels not desired by all subscribers can be decoupled before connecting to the common service cable, the remaining desired Channels of all antennas and / or polarization levels in mutually non-overlapping channels can be implemented and wherein the thus prepared frequency band can be switched on the common house connection cable.
  • the available total frequency band for all antennas or the polarization levels of such channels is adjusted, which the participants consider anyway uninteresting (eg for linguistic reasons or lack of appropriate encoders). Instead, a meaningful selection of desired channels is made from all the connected antennas or the polarization planes, which are then available to each participant without the need for individual interventions by the individual participants.
  • the structure is inexpensive and simple and also, because of the high integration density, compact. In particular, there is the possibility of a very sharp band limitation, which disturbances of adjacent channels are virtually completely excluded.
  • the supply of the processed frequency band is done in a simple manner in that the rearrangement has before its output a collection field over which the rearranged channels are combined and fed to the house connection channel.
  • a structure is favorable, in which it is provided that the reordering device for selecting the channels and to implement in the intended frequency ranges of the processed frequency band, a programmable controller with a display device and setting buttons.
  • the antenna receiving system can be tuned quickly and without technical effort to the changed conditions.
  • the structure can be simplified by a continuous block of channels is looped through an antenna and fed via a filter to a loop-through input of the reordering device. If modified commercial SAT tuners are used, the same conditions for the preparation of all channels are created with little technical effort.
  • a second intermediate frequency of 480 MHz is advantageous.
  • a good utilization of the available frequency band and a considerable simplification in setting up the antenna receiving system are achieved in that a dynamic channel grid is formed by means of the programmable controller, so that in the processed frequency band, the channels can be lined up in spite of different bandwidths gapless.
  • a reordering device can be housed, for example, in a housing with twelve input terminals and correspondingly have many paths for signal conditioning. Depending on the number of desired channels of each antenna or each plane of polarization can be occupied by an antenna or polarization plane different numbers of inputs of the rearrangement. Also, a plurality of individual housings may be provided to achieve the maximum number of channels to be accommodated in the frequency band to be reprocessed.
  • the invention is compared to the known methods or devices, the task of further developing them such that the implementation of whole transponder blocks is freely programmable and that this is compatible with marketed satellite receivers, even those without Unicable control.
  • the satellite receiving and distribution system according to the invention as a headend with programmable transponder conversion of transponder blocks has the advantage that normal receivers are used in a surprisingly simple and cost-effective manner in the present configuration since the configuration is usually not changed dynamically.
  • exactly one transponder was made available to the receiver, which he had previously requested himself.
  • all configured transponders are available to each receiver. Thus, theoretically any number of subscribers can connect to a cable at the same time as with a normal head end.
  • a control device is connected to the multi-switch and an interface circuit.
  • SAW filter SAW filter
  • SAW filter surface acoustic wave filter
  • This embodiment of the innovation has the advantage that in each influenceable frequency band of the branches by the combination of adjustable amplifier and bandpass filters a flat course of the magnitude frequency response in the passband with very good blocking above and below the cutoff frequency of the respective filter is achieved.
  • FIG. 1 is a block diagram of a preferred embodiment of a satellite headend with programmable transponder conversion of transponder blocks and
  • FIG. FIG. 2 is a schematic representation of the receive frequency range for an embodiment with eight transmitters for a satellite headend of FIG. 1.
  • the in FIG. 1 shows a block diagram of a preferred embodiment of the satellite headend (DVB-S or DVB-S2) according to the invention with programmable transponder conversion of transponder blocks.
  • the device is used for freely programmable conversion of 1 to m transponder Tl, ..., Tm in n transponder blocks TBl to TBn.
  • a satellite antenna S is provided with at least one LNB reception converter LNB4, at the outputs of which the respective satellite IF level is present and to which a multiswitch MS connected thereto is supplied.
  • LNB4 LNB reception converter
  • Quattro LNB receive converters LNB4 convert the horizontally and vertically polarized satellite signals from the high frequency range, namely, a lower frequency band L of 10.7 to 11.7 GHz and an upper frequency band H of 11.7 to 12.75 GHz, in FIG a lower intermediate frequency range of 950 to 2150 MHz (see Fig. 2).
  • the multi-switch MS are m mutually parallel converter U with adjustable output level in combination whose transponder blocks TBL to TBn are assembled in a connected to the converters U logic circuit VS to an output spectrum.
  • Connected to the switching circuit VS is a fixed or adjustable amplifier V, to which each user-side receiver / receiver is connected to common and via connection boxes ADl, AD2, ...
  • the antenna line AL further has a junction box as a terminal box for the wave resistance compliant termination with a terminating resistor (not shown in the drawing).
  • the logic circuit VS is designed as a summer or crossover or controlled crossover network for combining the filtered transponder blocks TBl, .., TBn. Particularly cost effective, it is when the crossover VS consists of adders.
  • the multi-switch MS has a matrix M connected to the outputs of the LNB receive converters LNB1, LNB4, which loop through the satellite IF levels.
  • the quad LNB LNB4 is connected to the matrix M and the single LNB LNBl directly to a converter U. This can be created for foreigners programs nor a fifth SAT input for a single converter U.
  • a controller ⁇ C For remote configuration, including update and / or remote diagnostics is a controller ⁇ C with the multi-switch MS and an interface circuit USB related.
  • the interface circuit USB is preferably designed as a USB interface, via which a USB stick US or a PC for configuring the multi-switch MS / matrix M can be connected.
  • the USB stick US can also have a program for configuration, which can be displayed on the user-side receiving device.
  • a tuner T is connected to the controller ⁇ C.
  • the configuration or configuration program is associated with the input of a key (for example via the remote or keyboard of the receiving device or tuner T or the multiswitch MS).
  • the multi-switch MS / the matrix M can be configured in such a way that transponder blocks TB1 to TBn of the same or different satellite IF levels are tapped.
  • a filter BF is connected whose bandwidth is either fixed or configurable by means of the controller ⁇ C according to the number of transponders.
  • the transponder blocks TBL to TBN arranged.
  • the gain (including the amplifier V) can be changed programmatically.
  • FIG. FIG. 2 shows a schematic representation of the reception frequency range for an embodiment with eight converters U for a satellite head-end according to FIG. 1. Up to 150 programs in the frequency range between 950 MHz and 2,150 MHz can be made available by means of the eight converters U (in each case a maximum of twenty-five transponders).
  • the converter U are designed such that the frequency conversion of the reception frequency takes place without the detour via satellite IF levels.
  • the multiswitch MS can have a control device for evaluating the control signals coming from the user-side receiving device, which makes possible a configuration of the system via the antenna line.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Radio Relay Systems (AREA)

Abstract

Les multicommutateurs configurables ou dispositifs de réception satellite à sources multiples de conceptions diverses, comportant des matrices de commutation, des branches de transpondeur et des solutions "monocâbles" avec ou sans possibilité d'extension ultérieure en terme d'abonnés connectables, sont connus. En règle générale, les coûts de tels dispositifs comportant des convertisseurs de fréquences sont principalement définis par les convertisseurs de fréquences et leurs filtres correspondants. Dans la pratique, des procédés et dispositifs économiques permettant, même en cas d'extension ultérieure, d'englober l'ensemble du spectre de fréquences, et ne présentant donc pas de limites en terme d'offre de programmes, font défaut. Le dispositif selon l'invention de conversion librement programmable de 1 à m transpondeurs en n blocs de transpondeurs (TB1 à TBn) d'un dispositif de réception et de distribution satellite comporte: une antenne satellite (S) comportant au moins un convertisseur de réception LNB (LNB1, LNB4), le plan ZF satellite étant présent sur les sorties de cette antenne; un multicommutateur (MS) connecté aux sorties du ou des convertisseurs de réception LNB (LNB1, LNB4); n convertisseurs parallèles (U); et un circuit de combinaison (VS) connecté aux convertisseurs (U) pour l'assemblage des n blocs de transpondeurs (TB1 à TBn) en un spectre de sortie de telle manière que le dispositif fournit tous les transpondeurs configurés à chaque récepteur à la manière d'une station de tête satellite. L'invention a trait au domaine des dispositifs de réception et de distribution satellite en tant que station de tête.
PCT/EP2009/008309 2008-11-21 2009-11-21 Dispositif de réception et de distribution satellite servant de station de tête comportant une conversion de transpondeur programmable de blocs de transpondeurs WO2010057664A2 (fr)

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EP09809057A EP2359508A2 (fr) 2008-11-21 2009-11-21 Dispositif de réception et de distribution satellite servant de station de tête comportant une conversion de transpondeur programmable de blocs de transpondeurs
CA2744274A CA2744274C (fr) 2008-11-21 2009-11-21 Dispositif de reception et de distribution satellite servant de station de tete comportant une conversion de transpondeur programmable de blocs de transpondeurs
US13/130,167 US8656436B2 (en) 2008-11-21 2009-11-21 Satellite reception and distribution system for use as a head end with programmable transponder conversion of transponder blocks

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DE202008015500.2 2008-11-21
DE202008015500U DE202008015500U1 (de) 2008-11-21 2008-11-21 Satelliten-Empfangs- und Verteilanlage als Kopfstelle mit programmierbarer Transponderumsetzung von Transponderblöcken

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WO2010057664A2 true WO2010057664A2 (fr) 2010-05-27
WO2010057664A3 WO2010057664A3 (fr) 2010-07-15

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CA2744274C (fr) 2015-09-29
US8656436B2 (en) 2014-02-18
CA2744274A1 (fr) 2010-05-27
US20110296470A1 (en) 2011-12-01
EP2359508A2 (fr) 2011-08-24
DE202008015500U1 (de) 2009-02-12
WO2010057664A3 (fr) 2010-07-15

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