EP2856672A1 - Multiplexeur avec attribution d'entrée dynamique - Google Patents

Multiplexeur avec attribution d'entrée dynamique

Info

Publication number
EP2856672A1
EP2856672A1 EP13724577.5A EP13724577A EP2856672A1 EP 2856672 A1 EP2856672 A1 EP 2856672A1 EP 13724577 A EP13724577 A EP 13724577A EP 2856672 A1 EP2856672 A1 EP 2856672A1
Authority
EP
European Patent Office
Prior art keywords
inputs
outputs
input
request
output
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
EP13724577.5A
Other languages
German (de)
English (en)
Inventor
Michael Franke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2856672A1 publication Critical patent/EP2856672A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6143—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a satellite
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
    • H04N21/4263—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/43615—Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable
    • H04N7/106—Adaptations for transmission by electrical cable for domestic distribution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/20—Adaptations for transmission via a GHz frequency band, e.g. via satellite

Definitions

  • a reception system for satellite signals usually comprises a satellite antenna with a parabolic mirror and a low-noise signal converter (LNB) and a satellite receiver (receiver). Signals transmitted by a communication satellite are focused by and received by the parabolic mirror at the LNB.
  • the LNB converts a portion of the received signals to a predetermined intermediate frequency and provides the converted signal to the receiver.
  • the receiver decodes from this signal those audio or video signals which are required to output a predetermined channel.
  • a satellite can emit signals of different frequencies and planes of polarization.
  • a common lower frequency band (low band) is in the range of 10.70 to 1 1, 70 GHz, a usual upper frequency band (high band) in the frequency range of 1 1, 70 to 12.75 GHz.
  • the signals can be polarized horizontally or vertically. Combining these alternatives results in four so-called levels on which satellite signals can be received.
  • Conventional home cabling is unable to provide enough bandwidth for transmission of all levels in a single cable.
  • a receiver may apply a predetermined combination of a DC voltage and a pilot frequency to the audible range at its input to drive the LNB to output signals of the associated level.
  • Multi-switches which can be inserted into the signal cable between the LNB and the receiver, have the task of distributing signals of several levels to one or more receivers.
  • a multi-switch may be integrated with the LNB.
  • DE 202 1 1 276 U1 shows a multi-switch with a programming interface to allow assignment of satellite signals of different polarizations and intermediate frequencies to inputs of the multi-switch.
  • a multiswitch according to the invention for distributing satellite signals of different levels comprises a plurality of inputs for connection to controllable sources for satellite signals of the different levels and a plurality of outputs for connection to receivers for the satellite signals. Furthermore, a switching device is provided for connecting outputs with inputs, wherein the switching means is arranged to receive requests for levels via the inputs and to dynamically assign the inputs to outputs on which the same requests are issued. In this case, the switching device is also set up to output the requirements for levels according to the order of their arrival on unused inputs.
  • the requirements on the inputs according to the requirements of the outputs can be switched dynamically and not be assigned according to a predetermined scheme.
  • a dynamic assignment of inputs to levels can be achieved, which does not raise the number of simultaneously receivable channels over the number of connections between inputs of the multiswitch and the signal sources, but allows optimal use of inputs connected to sources.
  • the number of practically usable channels can be significantly increased using the described multi-switch.
  • the described multiswitch can be used in an existing installation without requiring adjustments from other components. Installation of additional connections between the receivers or the multiswitch and the sources may not be necessary.
  • a residential unit which is connected via two parallel cables to an LNB or multi-switch, can receive at any time two channels from different levels and any number of further channels from these two levels.
  • LNB or multi-switch the needs of a typical two- to four-person
  • the switching device is adapted to reject a received request for a plane if the request is not issued to any used input and there is no other input connected to a source. Competing access to one of the inputs can thereby be avoided. For example, a situation can be excluded in which a reception of a first channel from a first band by means of a first receiver by a request of a second th channel from a second band is interrupted by a second receiver. This may be particularly important for unattended reception and recording of the first channel, for example.
  • the switching device is additionally configured to output an error signal via the output via which the rejected request has been received.
  • the error signal may, for example, include an indication of already used levels, so that a user can select another channel from one of these levels.
  • the error signal may also include an indication of the receivers who have requested the used levels to facilitate the user's ability to consult with users of said receivers.
  • exactly two inputs are provided for connection to sources of satellite signals and more than two outputs.
  • This constellation corresponds to a common installation, especially in a satellite receiving system for a plurality of residential units, each housing unit being connected by means of two cables to a central satellite antenna or a multi-switch connected thereto.
  • the multi-switch further includes another input for connection to another signal source in a frequency range independent of satellite reception, the switching device being arranged to make the independent frequency range available on all outputs.
  • the distribution of the terrestrial signal can thus be used independently of the control of the satellite signals at all outputs simultaneously.
  • An inventive method for controlling a multi-switch having inputs for connection to controllable sources for satellite signals of the different levels and outputs for connection to a plurality of receivers for the satellite signals comprises steps of receiving a request for First level satellite signals over a first output, outputting the received request on an unused input of the multi-switch if none of the inputs used is the same, and connecting the first output to the input over which the received request is issued.
  • This may support a dynamic assignment of levels to the inputs that operates on the queue model (first come, first served, first in, first out).
  • the length of the queue can be as large as the number of available inputs.
  • the method may be useful for dynamically exploiting undersized cabling between the multiswitch and the signal source.
  • An unused input is preferably not connected to any of the outputs.
  • no request received over one of the outputs can be output via an unused input.
  • a computer program product comprises program code means for carrying out the method described, when the computer program product runs on a processing device or is stored on a computer-readable data carrier.
  • Figure 1 shows a receiving system for satellite signals
  • Figure 2 is a flow chart of a method for controlling a multi-switch of Figure 1
  • Figures 3 to 6 exemplary connections within the multi-switch according to one of Figures 1 or 2 represents.
  • FIG. 1 shows a system 100 for the reception of satellite signals.
  • the system 100 includes a satellite antenna 105, which typically includes a parabolic mirror 110 and one or more LNB (signal converter) 15. Furthermore, an infrastructure 120 is provided which distributes signals received by the satellite antenna 105 to one or more receivers (receivers) 125.
  • LNB signal converter
  • the infrastructure 120 may have different structures and comprise different components, which in turn may be implemented with other components integrated.
  • one or more cables 130 running in parallel and a multi-switch 135 according to the invention are provided.
  • another multi-switch 140 is provided, which is preferably mounted in close proximity to the satellite antenna 105.
  • the further multi-switch 140 may also be designed to be integrated with the LNB 1 15. It is also possible to provide further multiswitches 140 in the signal connection between the satellite antenna 105 and the further multiswitch 135.
  • several other multiswitches 135 may be cascaded within an infrastructure 120.
  • the infrastructure shown in Figure 1 corresponds to a receiving system for satellite signals, which distributes the signals received via the satellite antenna 105 to a plurality of residential units 145, of which only one is shown.
  • satellite signals can be received from different so-called levels, whereby a cable 130 can only transmit signals of one of the levels.
  • the satellite antenna 105 is thereby, optionally with the addition of the further multi-switch 140, a controllable source of satellite signals.
  • the control takes place here by means of signals that a receiver 125 and the multi-switch 135 via transmits the cable 130.
  • two different planes of polarization and two different frequency bands can be combined into a total of four levels, wherein a switching between the levels takes place by means of a combination of a supply voltage and a pilot tone (beacon).
  • a pilot tone bea pilot tone
  • Multi-switch 140 to the satellite antenna 105 possible.
  • a request for one of the LH, LV, HH or HV levels is a combination of the associated voltage and frequency on the signal connection to the source.
  • the program selection is at the multi-switch 135 limited by being able to receive only programs from as many levels as there are cables 130 at the same time.
  • the multiswitch 135 is set up to meet requirements of the receivers 125 for the exemplary levels LH, LV, HH or HV according to the order of their arrival at the other multi-switch 135 to the satellite antenna 105 pass.
  • the multi-switch 135 comprises a number of outputs 155 and a number of inputs 160.
  • the number of outputs 155 is not limited.
  • the number of inputs 160 is at least as large as the number of cables 130. In preparation for possible future use of additional cables 130, the number of inputs 160 may be as large as the number of planes that can be received via the satellite antenna 105. In one embodiment, another input 165 is provided that may be connected to a terrestrial antenna 170 whose signals do not pass through the cables 130.
  • the multi-switch 135 includes a switching means 175 for dynamically connecting the inputs 160 to the outputs 155 and for relaying requests for predetermined levels from the outputs 155 to the inputs 160.
  • the connection of the outputs 155 to the further input 165 may be independent therefrom; In particular, the signals of the further input 165 can additionally be modulated onto all outputs 155 independently of the signals of the satellite antenna 105.
  • FIG. 2 shows a flow diagram of a method 200 for controlling the multi-switch 135 from FIG. 1.
  • the use of four levels according to Table 1 is assumed again by way of example.
  • a first step 205 the outputs 155 are checked for the presence of requirements for one of the levels LH, LV, HH, HV.
  • a following step 210 it is determined whether any of the requirements are new, i. has not yet been treated in a previous run of the method 200. If this is not the case, the method 200 returns to step 205 and can go through again.
  • the method 200 proceeds to a step 215 wherein it is determined whether an input 160 of the multi-switch 135 already carries the same as the newly received request. If this is not the case, it is checked in a step 220 whether an unused input 160 of the multi-switch 135 exists. An input 160 may then be considered unused if it is not connected to any of the outputs 155. Alternatively, an unused input 160 may also be identified as not carrying a request in which, for example, the voltage at input 160 (see Table 1) is less than 14V, particularly 0V. If there is an unused input 160, the received request is output in step 225 on the unused input 160.
  • Step 230 the output 155 via which the new request was received is connected to the input 160 carrying the same request.
  • Step 230 may also be performed immediately after it has been determined in step 215 that an input 160 already has the same request as was received via output 155 in step 210.
  • step 225 of step 230 is implicitly included.
  • the method 200 optionally continues after step 220 with a step 235 in which an error message is determined.
  • the error message may in particular include an indication of levels LH, LV, HH and HV, which are already assigned to other inputs 160. Additionally or alternatively, indications may be provided for those outputs 155 or their associated receivers 125 or playback devices 150 which are supplied with signals from a used input 160. Alternatively, an anonymous indication of the unsatisfiability of the request may also be provided.
  • step 240 the error message provided in step 235 is output at the output 155 via which the new request was received in step 210. Thereafter, the method 200 may return to step 205 and run again.
  • FIG. 3 shows exemplary connections within the multi-switch 135 from FIG. 1. Shown is merely the switch 175 with four exemplary inputs 160 and four exemplary outputs 155. For improved referencing, the inputs are labeled 160.A to 160.D and the outputs 155.A to 155.D.
  • a request for first level signals has arrived at the output 155.C, whereupon the switching device 175 outputs this request at the input 160.A and passes the signals from the input 160.A to the output 155.C.
  • a further request for the first level has arrived via the output 155.A. Since the input 160.A already provides signals of the newly requested level, the output 155.A is connected to the input 160.A.
  • Receiver 125 connected to outputs 155.A and 155.C, can still provide different channels, both in the first plane.
  • Figure 3C shows a situation after receiving a request for a second level via the output 155.D.
  • the request was issued via input 160.
  • B and input 160. D was connected to the output
  • Dismounting of connections between inputs 160 and outputs 155 within the circuit device 175 is preferably carried out when no further request is received via one of the outputs 155. As a result, an input 160 previously connected to one of the outputs 155 can again be used up.
  • the switching device 175 moves when an existing request at one of the outputs 155.A to 155.D goes out.
  • the extinction of a request usually characterizes the deactivation or deactivation of a receiver 125 connected to the output 155.
  • the extinction of the request can be determined, for example, based on a supply voltage of less than 12 V, in particular of approximately 0 V, at the output 155 become.
  • a connection between the output 155 and an input 160 is released. The following is assumed the input 160 is not connected to any other output 155 so that the relevant input 160 becomes free.
  • the freed input 160 is considered free or unused, so that the input 160 can be connected to one of the outputs 155 at a later time on the basis of a new request, as described above with reference to the method 200. in particular, the step 220, is described.
  • the switching device 175 or the surrounding multiswitch 135 can detect whether a request present at one of the inputs 160 is unattended, an input 160 whose associated request disappears can be connected to an output 155 whose connected input 160 is not disconnected another multiswitch 140 was operated.
  • FIG. 4 illustrates this process. 4A, two connections between inputs 160 and outputs 155 exist. In this case, the request of the second input 160. B can not be served by the further multiswitch 140 so that the receiver 125 connected to the output 155.C does not receive any useful signal.
  • FIG. 4B shows the situation at a later point in time when the request at the output 155.B has gone out, so that the released input 160.A can be reassigned.
  • FIG. 4C shows a connection of the output 155.C with the input 160.A. The pre-existing connection of input 160.A to input 160.B has been released.
  • FIG. 5 illustrates this procedure.
  • FIG. 5A there are three connections between outputs 155 and inputs 160.
  • the request for output 155.C has gone out so that the connection to input 160.B has been disconnected.
  • the input 160.C is prioritized lower than the input 160B and it is not known whether the request issued at the input 160.C could be served by the further multiswitch 140 or not.
  • FIG. 5C shows how the previously valid connection between the output 155.A and the input 160.C has been disconnected and the output 155.A is now connected to the freed input 160B.
  • FIG. 6A there are again two connections between inputs 160 and outputs 155 within the switching device 175.
  • the request at the output 155. B expires so that the connection to the input 160.A has been disconnected.
  • FIG. 6C a new request for a plane was received via one of the outputs 155, in the representation via the output 155.A. gen, which is already requested via the input 160.B. Instead of connecting the output 155.A to the input 160.D, it is connected to the input 160.A, which has a higher priority than the input 160B. Thus, it can be ensured that the higher-priority inputs 160 are utilized in an improved way. This can help incoming at the 155 outputs

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (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

L'invention concerne un multiplexeur servant à la distribution de signaux de satellite de différents plans, comprenant plusieurs entrées, servant à la connexion à des sources pouvant être commandées pour des signaux de satellite de différents plans, et plusieurs sorties servant à la connexion à des récepteurs pour les signaux de satellite. La présente invention concerne en outre un dispositif de commutation servant à la connexion de sorties avec des entrées, le dispositif de commutation étant agencé pour recevoir des demandes pour des plans par l'intermédiaire des entrées et pour affecter dynamiquement les entrées à des sorties sur lesquelles sont délivrées les mêmes demandes. Pour ce faire, le dispositif de commutation est agencé pour délivrer les demandes pour des plans, conformément à leur ordre d'arrivée, sur des entrées inutilisées dans la séquence correspondante. Avec ce dispositif de commutation, contrairement à l'état de la technique, les demandes sur les entrées sont commutées dynamiquement en fonction des demandes sur les sorties et ne sont pas occupées selon un schéma prédéfini.
EP13724577.5A 2012-05-25 2013-05-22 Multiplexeur avec attribution d'entrée dynamique Ceased EP2856672A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012208801A DE102012208801A1 (de) 2012-05-25 2012-05-25 Multischalter mit dynamischer Eingangszuordnung
PCT/EP2013/060438 WO2013174829A1 (fr) 2012-05-25 2013-05-22 Multiplexeur avec attribution d'entrée dynamique

Publications (1)

Publication Number Publication Date
EP2856672A1 true EP2856672A1 (fr) 2015-04-08

Family

ID=48483068

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13724577.5A Ceased EP2856672A1 (fr) 2012-05-25 2013-05-22 Multiplexeur avec attribution d'entrée dynamique

Country Status (5)

Country Link
US (1) US9912998B2 (fr)
EP (1) EP2856672A1 (fr)
CN (1) CN104321986B (fr)
DE (1) DE102012208801A1 (fr)
WO (1) WO2013174829A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016205609A1 (de) * 2016-04-05 2017-10-05 Rohde & Schwarz Gmbh & Co. Kg Verarbeitungsvorrichtung und Verfahren

Citations (1)

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Publication number Priority date Publication date Assignee Title
US20090006625A1 (en) * 2005-01-05 2009-01-01 Gary Robert Gutknecht Method and system for allocating receiving resources in a gateway server

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JPH07107966B2 (ja) * 1985-07-18 1995-11-15 株式会社東芝 スイツチ分配装置
WO1994014284A1 (fr) * 1992-12-09 1994-06-23 Discovery Communications, Inc. Terminal reprogrammable destine a suggerer des programmes presentes dans un systeme de diffusion de programmes de television
TR200000846T2 (tr) * 1996-11-05 2000-07-21 Worldspace Inc. Dijital uydudan yapılan doğrudan yayın.
US7352991B2 (en) 2002-03-21 2008-04-01 National Antenna Systems Satellite signal distribution systems
DE20211276U1 (de) 2002-07-25 2002-11-07 Spaun-electronic GmbH & Co. KG, 78224 Singen Schaltvorrichtung für eine Satelliten-Empfangsanlage
DE202004007763U1 (de) 2004-05-10 2004-07-15 Resch Electronic Innovation Gmbh Multischalter für Satelliten-Zwischenfrequenz-Verteilung
KR20060081940A (ko) 2005-01-11 2006-07-14 삼성전자주식회사 위성신호 수신 시스템
DE102005040012A1 (de) * 2005-08-23 2007-03-01 Christian Schwaiger Gmbh Verfahren und Vorrichtung zur Konfiguration von n unabhängigen Teilnehmern einer Satelliten-Empfangsanlage
US20100103146A1 (en) * 2008-10-28 2010-04-29 Prince William H Cycling through display input ports
US8799966B2 (en) * 2009-11-24 2014-08-05 Centurylink Intellectual Property Llc Middleware bandwidth shifting

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US20090006625A1 (en) * 2005-01-05 2009-01-01 Gary Robert Gutknecht Method and system for allocating receiving resources in a gateway server

Also Published As

Publication number Publication date
CN104321986A (zh) 2015-01-28
US9912998B2 (en) 2018-03-06
CN104321986B (zh) 2018-06-08
WO2013174829A1 (fr) 2013-11-28
DE102012208801A1 (de) 2013-11-28
US20150304731A1 (en) 2015-10-22

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