US20180227045A9 - Modular, Expandable System for Data Reception and Distribution - Google Patents
Modular, Expandable System for Data Reception and Distribution Download PDFInfo
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- US20180227045A9 US20180227045A9 US15/623,486 US201715623486A US2018227045A9 US 20180227045 A9 US20180227045 A9 US 20180227045A9 US 201715623486 A US201715623486 A US 201715623486A US 2018227045 A9 US2018227045 A9 US 2018227045A9
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Definitions
- Certain implementations of this disclosure relate to data reception and distribution. More specifically, certain implementations of this disclosure relate to a modular, expandable system for data reception and distribution.
- a system and/or method is provided for a modular, expandable system for data reception and distribution as illustrated by and/or described in connection with at least one of the figures, as set forth more completely in the claims.
- FIG. 1 depicts an example network comprising satellite television components, local area networking components, and wide area networking components.
- FIG. 2A depicts example circuitry of a satellite reception assembly.
- FIG. 2B depicts example circuitry of a satellite reception assembly comprising a direct conversion LNB.
- FIG. 3A depicts a first example implementation of a modular, expandable satellite reception assembly.
- FIG. 3B depicts a second example implementation of a modular, expandable satellite reception assembly.
- FIG. 3C depicts a third example implementation of a modular, expandable satellite reception assembly.
- FIG. 4 depicts a flowchart of an example process for reception and distribution signals in a modular, expandable satellite reception assembly.
- FIG. 5 depicts a flowchart for configuration of a modular, expandable satellite reception assembly.
- circuits and circuitry refer to physical electronic components (i.e. hardware) and any software and/or firmware (“code”) which may configure the hardware, be executed by the hardware, and or otherwise be associated with the hardware.
- code software and/or firmware
- a particular processor and memory may comprise a first “circuit” when executing a first one or more lines of code and may comprise a second “circuit” when executing a second one or more lines of code.
- and/or means any one or more of the items in the list joined by “and/or”.
- x and/or y means any element of the three-element set ⁇ (x), (y), (x, y) ⁇ .
- x, y, and/or z means any element of the seven-element set ⁇ (x), (y), (z), (x, y), (x, z), (y, z), (x, y, z) ⁇ .
- example means serving as a non-limiting example, instance, or illustration.
- the terms “e.g.,” and “for example” set off lists of one or more non-limiting examples, instances, or illustrations.
- circuitry is “operable” to perform a function whenever the circuitry comprises the necessary hardware and code (if any is necessary) to perform the function, regardless of whether performance of the function is disabled, or not enabled, by some user-configurable setting.
- FIG. 1 depicts an example network comprising satellite television components, local area networking components, and wide area networking components.
- the system 100 comprises an example in-premises network 100 , a satellite reception assembly 106 comprising a housing 122 , a wide area network (WAN) 112 comprising one or more servers 124 , a network link 108 connecting the dish 106 and the in-premises network 100 , and a link 110 connecting the in-home network 100 and the WAN 112 .
- the example in-home network 100 comprises a gateway 102 , television 114 , and a local area network (LAN) 104 .
- LAN local area network
- the satellite reception assembly 106 may comprise circuitry operable to receive satellite signals (e.g., K, Ka, and/or Ku band Direct Broadcast Satellite (DBS) signals), process the satellite signals to recover channels and/or information carried in the satellite signals (e.g., television channels, media content, etc.), and output the channels and/or information to the gateway 102 via the communication link 108 .
- satellite signals e.g., K, Ka, and/or Ku band Direct Broadcast Satellite (DBS) signals
- DBS Direct Broadcast Satellite
- Each of the communication links 108 and 110 may comprise one or more wired, wireless, and/or optical links.
- the communication link 108 may comprise, for example, a wired (e.g., coaxial and/or twisted-pair) and/or wireless communication medium which carries physical layer symbols in accordance with, for example, Multimedia over Coax Alliance (MoCA), Ethernet, and/or DBS standards.
- the communication link 110 may comprise, for example, a coaxial or twisted-pair cable and/or an optical fiber which carries physical layer symbols in accordance with, for example, DSL, DOCSIS, or Ethernet standards.
- the WAN 112 may comprise, for example, a DSL (or Cable Television/DOCSIS, or Fiber to the Home, or the like) headend and associated circuitry and/or devices.
- DSL or Cable Television/DOCSIS, or Fiber to the Home, or the like
- Such devices may include one or more servers 124 which are operable to communicate with the gateway 102 .
- the LAN 104 may comprise any number and/or type of client devices that communicate with the gateway 102 via link 128 using a networking protocol (e.g., Ethernet or MoCA). Examples of such devices shown include a computer 116 , network attached storage 120 , and a wireless access point (WAP) 118 .
- a networking protocol e.g., Ethernet or MoCA.
- Examples of such devices shown include a computer 116 , network attached storage 120 , and a wireless access point (WAP) 118 .
- WAP wireless access point
- the client device 114 may comprise a device that communicates with the gateway 102 via one or more point-to-point media links (e.g., HDMI, Display Port, analog video links, analog video links, or the like).
- point-to-point media links e.g., HDMI, Display Port, analog video links, analog video links, or the like.
- An example of such a device is a television.
- the gateway 102 may comprise circuitry operable to receive the signals communicated over the links 108 and 110 , process the signals as necessary for outputting information contained therein via one or more links 130 (e.g., an HDMI or Display Port link) and/or one or more links 128 (e.g., a MocA or Ethernet link).
- the gateway 102 may also comprise circuitry operable to transmit signals via the link 108 and/or via the link 110 .
- gateway in this disclosure refers to a client device that performs satellite set-top box functions and WAN modem functions, where “satellite set-top box” functions are for delivering data from the satellite reception assembly 106 to devices within the premises and “WAN modem” functionality refers to communicating data between the premises 101 and the wide area network 112 .
- FIG. 2A depicts example circuitry of a satellite reception assembly.
- the circuitry comprises a low-noise block-downconverter (LNB) 250 , an IF processing circuit 252 , a digital processing circuit 254 , and a client interface circuit 258 .
- LNB low-noise block-downconverter
- the LNB 250 may comprise circuitry operable to receive RF satellite signals (e.g., K, Ka, and/or Ku Band DBS signals) via a reflector of the satellite reception assembly, filter, downconvert, and/or amplify such signals to generate corresponding IF signals (e.g., in the L-band).
- RF satellite signals e.g., K, Ka, and/or Ku Band DBS signals
- the LNB 250 is illustrated outputting M (an integer number) of IF signals, labeled s 1 to s M .
- Each of the IF signals may, for example, comprise an IF signal in the L-band (950 MHz to 2150 MHz), and may correspond to a respective satellite signal (e.g., s 1 may correspond to a first polarization of a first satellite, s 2 may correspond to second polarization of the first satellite, s 3 may correspond to a first polarization of a second satellite, and so on).
- s 1 may correspond to a first polarization of a first satellite
- s 2 may correspond to second polarization of the first satellite
- s 3 may correspond to a first polarization of a second satellite, and so on).
- the IF processing circuit 252 may be operable to amplify, downconvert, filter, and/or digitize at least a portion of the IF signals s 1 -s M to generate digital signals d 1 -d N , where N is an integer.
- the IF processing circuit 242 may support full-spectrum capture where an entire spectrum of each of one or more protocols of interest may be concurrently digitized.
- the IF processing circuit 252 may comprise M analog-to-digital converters each of which can digitize the entire bandwidth of one of the signals DBS signals s 1 . . . s M to generate a corresponding one of signals d 1 . . . d M .
- each of the analog-to-digital converters may be as described in U.S. patent application Ser. No. 13/485,003 and/or U.S. patent application Ser. No. 13/336,451, each of which is incorporated by reference above.
- only a portion of one or more of the signals s 1 to s M may be digitized and which portions are digitized may depend on which channels in the signals s 1 to s M are selected by client devices (e.g., which television channels are being consumed by the client(s)).
- the IF processing circuit 252 may be configured via one or more control signals (not shown) from the digital processing circuit 254 and/or the client interface circuit 258 which may, in turn, be based on upstream communications from one or more clients.
- the digital processing circuit 254 may be operable to process the signals d 1 -d N to recover information carried in one or more channels contained in the signals d 1 -d N and output that information to the client interface 258 (as signal 255 ) and/or via the expansion interface circuit 256 .
- An example implementation of the digital processing circuit 254 is described below with reference to FIGS. 3A-3C .
- the client interface circuit 258 may be operable to process data received as signal 255 and output that information onto link 108 in a format support by one or more client devices coupled to the link 108 .
- the client interface circuit 258 may be operable to packetize and transmit data received via signal 255 in accordance with one or more networking standards (e.g., Ethernet, Multimedia over Coax Alliance (MoCA), DOCSIS, and the like) to client devices that receive satellite data using such standards.
- networking standards e.g., Ethernet, Multimedia over Coax Alliance (MoCA), DOCSIS, and the like
- the client interface circuit 258 may be operable to perform operations (e.g., digital to analog conversion, modulation, frequency conversion, etc.) for outputting the data received via signal 255 according to one or more multimedia standards (e.g., ATSC, DVB-S, ISDB-S, and the like) to client devices that receives satellite data using such standards.
- operations e.g., digital to analog conversion, modulation, frequency conversion, etc.
- multimedia standards e.g., ATSC, DVB-S, ISDB-S, and the like
- FIG. 2B depicts example circuitry of a satellite reception assembly comprising a direct conversion LNB.
- a LNB 270 directly outputs the signals d 1 -d N . Accordingly, the need for the IF processing block is eliminated.
- FIG. 3A depicts a first example implementation of a modular, expandable satellite reception assembly.
- the satellite reception assembly 106 a comprises a housing 122 in which reside the LNB 250 , a first module 302 , a second module 312 , and an aggregation circuit 314 .
- the housing 122 may be, for example, part of a satellite reception assembly (e.g., a DBS satellite “dish”) and may be mounted on a boom at or near the focal point of a parabolic reflector.
- a satellite reception assembly e.g., a DBS satellite “dish”
- the two modules 302 and 312 may reside on separate substrates.
- the module 302 may be on a first semiconductor die on a first semiconductor package and the module 312 may be on a second semiconductor die in a second semiconductor package.
- the module 302 may reside on a first printed circuit board and the module 312 may reside on a second printed circuit board.
- the module 302 may be hard-wired (e.g., soldered) to a motherboard in the housing 302 whereas the module 310 may be mounted to the motherboard via a socket.
- the satellite reception assembly 106 a may have been deployed (e.g., mounted to the home or office of a DBS subscriber) without the module 312 , and the module 312 may have been later installed while the assembly 122 was in the field.
- the module 302 comprises an instance of the IF processing circuit 252 , an instance of the client interface circuit 258 , and an instance of the digital processing circuit 254 .
- the module 312 comprises an instance of the client interface circuit 258 and an instance of the digital processing circuit 254 .
- the IF processing circuit 252 may be as described above with reference to FIG. 2 , for example.
- Each instance of the client interface circuit 258 in FIG. 3A may be as described above with reference to FIG. 2 , for example.
- each instance of the client interface circuit 258 in FIG. 3A may output packets in accordance with a suitable networking standard.
- the aggregation circuit 314 may perform packet/frame routing/switching and/or act as a host/scheduler to manage delivery of the transport stream data from the two instances of the client interface circuit 258 onto the link 108 .
- Each instance of the digital processing circuit 254 may comprise one or more instances of expansion interface circuit 256 (labeled 256 a , 256 b , and so on), a channelizer circuit 304 , and a demodulation circuit 306 .
- the expansion interface circuit 256 may be operable to communicate information across a signal bus 308 in accordance with one or more standards such as reduced gigabit media independent interface (RGMII), a communication standard or protocol operating at 60 GHz, Thunderbolt, or other suitable standard or protocol.
- RGMII reduced gigabit media independent interface
- one or more of the signals d 1 . . . d N are output by module 302 via the expansion interface circuit 256 a .
- signals received via expansion interface circuit 256 b are output via expansion interface circuit 256 c .
- multiple modules 312 may be installed in the housing 122 in a daisy-chain-connected fashion.
- additional and/or alternative signals e.g., selected channels output by the channelizer 304
- the channelizer circuit 304 may be operable to process the digitized signals d 1 -d N (e.g., decimate and filter such signals) such that it outputs the one or more channels of the digitized signals d 1 -d M that have been selected for consumption by a client device.
- the channelizer 304 may, for example, serve as a crossbar for selecting a set of desired channels from among a plurality of channels available from one or more broadband sources.
- N may be equal to 4, with signals d 1 corresponding polarization one of satellite one, d 2 corresponding to polarization two of satellite one, d 3 corresponding to polarization one of satellite two, and d 4 corresponding to polarization two of satellite two.
- the channelizer 304 may select any arbitrary N (an integer) channels from among all channels carried by the two satellites.
- the number of channels the channelizer 304 is operable to select may be limited by size, power, and/or cost constraints.
- channelizer 304 of module 302 may be operable to select N channels and channelizer 304 of module 312 may be operable to select M channels where N and M are integers which may or may not be equal.
- the demodulation circuit 306 may comprise be operable to demodulate one or more of the selected channels output by the channelizer circuit 304 to recover one or more transport streams (e.g., MPEG transport streams) from the selected one or more channels.
- the demodulation circuit 306 may support any suitable modulation standards such as, for example, DVB-S and/or ISDB-S.
- the digital processing circuit 254 may comprise additional components such as, for example, a forward error correction circuit and/or packet id (PID) filter.
- PID packet id
- the module 302 may interface to the direct conversion LNB 270 .
- the IF processing module 252 may not be populated in the module 302 and/or may be populated but bypassed.
- FIG. 3B depicts a second example implementation of a modular, expandable satellite reception assembly.
- the satellite reception assembly 106 b comprises a housing 122 in which reside the LNB 250 , a first module 322 , a second module 324 , and an aggregation circuit 356 .
- the housing 122 may be, for example, part of a satellite reception assembly (e.g., a DBS satellite “dish”) and may be mounted on a boom at or near the focal point of a parabolic reflector.
- the two modules 322 and 324 may be similar to the modules 302 and 312 of FIG. 3A , but may comprise instances of digital processing circuit 326 that, unlike digital processing circuit 254 , does not comprise a demodulator. Consequently, the modules 322 and 324 may output selected channels without demodulating them. Accordingly, the aggregation circuit 356 may perform time and/or frequency division multiplexing in order combine the channels output from the various instances of client interface 256 onto the link 108 . In an implementation using frequency division multiplexing on the link 108 , the frequencies at which the client interface circuits 256 in FIG. 3B output the selected channels may be different (e.g., hard-coded differently, configured differently during installation of the module 324 , and/or configurable during run-time) such that the aggregation circuit 356 may not be unnecessary.
- the module 302 may interface to the direct conversion LNB 270 .
- the IF processing module 252 may not be populated in the module 302 and/or may be populated but bypassed.
- FIG. 3C depicts a third example implementation of a modular, expandable satellite reception assembly.
- the satellite reception assembly 106 c comprises a housing 122 in which reside the LNB 250 , an instance of the module 322 , an instance of the module 324 , and an aggregation circuit 356 .
- the housing 122 may be, for example, part of a satellite reception assembly (e.g., a DBS satellite “dish”) and may be mounted on a boom at or near the focal point of a parabolic reflector.
- a satellite reception assembly e.g., a DBS satellite “dish”
- the module 322 may be as described with reference to FIG. 3B , and the module 312 may be as described with reference to FIG. 3A .
- the module 322 may output selected modulated channels while the module 312 may output packetized transport streams and the aggregation circuit 346 may be operable to combine the different types of outputs onto the link 108 .
- the aggregation circuit may upconvert signals from the module 322 to frequencies above the band used for the Ethernet physical layer signals (e.g., 125 MHz).
- the channels output by the module 322 may be output on the link 108 at frequencies below the MoCA band.
- the module 322 may interface to the direct conversion LNB 270 .
- the IF processing module 252 may not be populated in the module 302 and/or may be populated but bypassed.
- FIG. 4 depicts a flowchart of an example process for reception and distribution signals in a modular, expandable satellite reception assembly.
- the flowchart of FIG. 4 may correspond to the example implementation in FIG. 3A , for example.
- a satellite signal e.g., Ka or Ku band DBS signal
- the LNB downconverts the received signal to an IF signal (e.g., L-band signal).
- the IF processing circuit 252 digitizes the IF signal from the LNB.
- the digitized IF signal is conveyed to a plurality of instances of the channelizer 304 , where one or more of the instances may be reached via an expansion interface circuit 256 and corresponding signal bus 308 .
- each instance of the channelizer 304 selects one or more channel from among the plurality of channels carried in the digitized IF signal. Which one or more channels are selected may be determined based on which channels/programs are being consumed by client devices served by the corresponding instance of channelizer 304 .
- the selected channels from each instance of the channelizer 304 are demodulated by a corresponding instance of demodulation circuit 306 to recover one or more transport streams.
- the transport streams are packetized and transmitted by the instances of the client interface circuits 258 .
- the packet streams are aggregated onto the link 108 by the aggregation circuit 314 .
- the packet streams arrive at client devices which decapsulate the packets to recover the transport stream data.
- FIG. 5 depicts a flowchart for configuration of a modular, expandable satellite reception assembly.
- a DBS satellite reception assembly 106 is installed at a customer premises (e.g., a DBS subscriber's home or office). At the time of installation, the satellite reception assembly 106 supports up to N clients (e.g., it has circuitry for demodulating N channels).
- additional client devices are installed at the premises such that the total number of clients to be served by the satellite reception assembly exceeds N.
- an aggregation circuit is installed (if necessary).
- a module in installed in the satellite reception assembly 106 while the satellite reception assembly remained in the field (i.e., remains installed at the subscriber's premises).
- the module may be hot-swappable.
- the satellite reception assembly 106 may then begin distributing satellite data to up to N+M clients.
- step 510 when the number of clients being served by the satellite reception assembly 106 approaches or exceeds N+i*M, where i is the number of additional modules 312 or 324 installed, the process may return to block 508 and an additional module 312 or 324 may be installed.
- inventions may provide a non-transitory computer readable medium and/or storage medium, and/or a non-transitory machine readable medium and/or storage medium, having stored thereon, a machine code and/or a computer program having at least one code section executable by a machine and/or a computer, thereby causing the machine and/or computer to perform the steps as described herein.
- the present invention may be realized in hardware, software, or a combination of hardware and software.
- the present invention may be realized in a centralized fashion in at least one computing system, or in a distributed fashion where different elements are spread across several interconnected computing systems. Any kind of computing system or other apparatus adapted for carrying out the methods described herein is suited.
- a typical combination of hardware and software may be a general-purpose computing system with a program or other code that, when being loaded and executed, controls the computing system such that it carries out the methods described herein.
- Another typical implementation may comprise an application specific integrated circuit or chip.
- the present invention may also be embedded in a computer program product, which comprises all the features enabling the implementation of the methods described herein, and which when loaded in a computer system is able to carry out these methods.
- Computer program in the present context means any expression, in any language, code or notation, of a set of instructions intended to cause a system having an information processing capability to perform a particular function either directly or after either or both of the following: a) conversion to another language, code or notation; b) reproduction in a different material form.
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Abstract
Description
- This patent application is a continuation of U.S. patent application Ser. No. 13/758,366 (now U.S. Pat. No. 9,078,100) which in turn makes reference to, claims priority to and claims benefit from U.S. Provisional Patent Application Ser. No. 61/595,654 entitled “Method and System for an Internet Protocol LNB (IP LNB)” and filed on Feb. 6, 2012.
- Each of the above-referenced documents are hereby incorporated herein by reference in its entirety.
- This patent application also makes reference to:
- U.S. Pat. No. 9,055,329 entitled “System and Method in a Broadband Receiver for Efficiently Receiving and Processing Signals” filed on Dec. 14, 2011; and
United States Patent Application Publication Serial No. 2012/0163518 entitled “Method and Apparatus for Broadband Data Conversion” filed on Dec. 23, 2011; and
U.S. Pat. No. 8,611,483 entitled “Multi-Layer Time-Interleaved Analog-To-Digital Convertor (ADC)” filed on May 31, 2012. - Each of the above-referenced documents is hereby incorporated herein by reference in its entirety.
- Certain implementations of this disclosure relate to data reception and distribution. More specifically, certain implementations of this disclosure relate to a modular, expandable system for data reception and distribution.
- Conventional methods and systems for data reception and distribution are too expensive, inefficient, and/or inflexible. Further limitations and disadvantages of conventional methods and systems will become apparent to one of skill in the art, through comparison of such systems with some aspects of this disclosure.
- A system and/or method is provided for a modular, expandable system for data reception and distribution as illustrated by and/or described in connection with at least one of the figures, as set forth more completely in the claims.
-
FIG. 1 depicts an example network comprising satellite television components, local area networking components, and wide area networking components. -
FIG. 2A depicts example circuitry of a satellite reception assembly. -
FIG. 2B depicts example circuitry of a satellite reception assembly comprising a direct conversion LNB. -
FIG. 3A depicts a first example implementation of a modular, expandable satellite reception assembly. -
FIG. 3B depicts a second example implementation of a modular, expandable satellite reception assembly. -
FIG. 3C depicts a third example implementation of a modular, expandable satellite reception assembly. -
FIG. 4 depicts a flowchart of an example process for reception and distribution signals in a modular, expandable satellite reception assembly. -
FIG. 5 depicts a flowchart for configuration of a modular, expandable satellite reception assembly. - As utilized herein the terms “circuits” and “circuitry” refer to physical electronic components (i.e. hardware) and any software and/or firmware (“code”) which may configure the hardware, be executed by the hardware, and or otherwise be associated with the hardware. As used herein, for example, a particular processor and memory may comprise a first “circuit” when executing a first one or more lines of code and may comprise a second “circuit” when executing a second one or more lines of code. As utilized herein, “and/or” means any one or more of the items in the list joined by “and/or”. As an example, “x and/or y” means any element of the three-element set {(x), (y), (x, y)}. As another example, “x, y, and/or z” means any element of the seven-element set {(x), (y), (z), (x, y), (x, z), (y, z), (x, y, z)}. As utilized herein, the term “example” means serving as a non-limiting example, instance, or illustration. As utilized herein, the terms “e.g.,” and “for example” set off lists of one or more non-limiting examples, instances, or illustrations. As utilized herein, circuitry is “operable” to perform a function whenever the circuitry comprises the necessary hardware and code (if any is necessary) to perform the function, regardless of whether performance of the function is disabled, or not enabled, by some user-configurable setting.
-
FIG. 1 depicts an example network comprising satellite television components, local area networking components, and wide area networking components. As shown inFIG. 1 , thesystem 100 comprises an example in-premises network 100, asatellite reception assembly 106 comprising a housing 122, a wide area network (WAN) 112 comprising one ormore servers 124, anetwork link 108 connecting thedish 106 and the in-premises network 100, and alink 110 connecting the in-home network 100 and theWAN 112. The example in-home network 100 comprises agateway 102,television 114, and a local area network (LAN) 104. - The
satellite reception assembly 106 may comprise circuitry operable to receive satellite signals (e.g., K, Ka, and/or Ku band Direct Broadcast Satellite (DBS) signals), process the satellite signals to recover channels and/or information carried in the satellite signals (e.g., television channels, media content, etc.), and output the channels and/or information to thegateway 102 via thecommunication link 108. Example details of thesatellite dish 106 reception assembly are described below with reference toFIGS. 2-5 . - Each of the
communication links communication link 108 may comprise, for example, a wired (e.g., coaxial and/or twisted-pair) and/or wireless communication medium which carries physical layer symbols in accordance with, for example, Multimedia over Coax Alliance (MoCA), Ethernet, and/or DBS standards. Thecommunication link 110 may comprise, for example, a coaxial or twisted-pair cable and/or an optical fiber which carries physical layer symbols in accordance with, for example, DSL, DOCSIS, or Ethernet standards. - The WAN 112 may comprise, for example, a DSL (or Cable Television/DOCSIS, or Fiber to the Home, or the like) headend and associated circuitry and/or devices. Such devices may include one or
more servers 124 which are operable to communicate with thegateway 102. - The
LAN 104 may comprise any number and/or type of client devices that communicate with thegateway 102 vialink 128 using a networking protocol (e.g., Ethernet or MoCA). Examples of such devices shown include acomputer 116, network attachedstorage 120, and a wireless access point (WAP) 118. - The
client device 114 may comprise a device that communicates with thegateway 102 via one or more point-to-point media links (e.g., HDMI, Display Port, analog video links, analog video links, or the like). An example of such a device is a television. - The
gateway 102 may comprise circuitry operable to receive the signals communicated over thelinks gateway 102 may also comprise circuitry operable to transmit signals via thelink 108 and/or via thelink 110. Thus, unless otherwise indicated, the term “gateway” in this disclosure refers to a client device that performs satellite set-top box functions and WAN modem functions, where “satellite set-top box” functions are for delivering data from thesatellite reception assembly 106 to devices within the premises and “WAN modem” functionality refers to communicating data between thepremises 101 and thewide area network 112. -
FIG. 2A depicts example circuitry of a satellite reception assembly. The circuitry comprises a low-noise block-downconverter (LNB) 250, anIF processing circuit 252, adigital processing circuit 254, and aclient interface circuit 258. - The
LNB 250 may comprise circuitry operable to receive RF satellite signals (e.g., K, Ka, and/or Ku Band DBS signals) via a reflector of the satellite reception assembly, filter, downconvert, and/or amplify such signals to generate corresponding IF signals (e.g., in the L-band). TheLNB 250 is illustrated outputting M (an integer number) of IF signals, labeled s1 to sM. Each of the IF signals may, for example, comprise an IF signal in the L-band (950 MHz to 2150 MHz), and may correspond to a respective satellite signal (e.g., s1 may correspond to a first polarization of a first satellite, s2 may correspond to second polarization of the first satellite, s3 may correspond to a first polarization of a second satellite, and so on). - The
IF processing circuit 252 may be operable to amplify, downconvert, filter, and/or digitize at least a portion of the IF signals s1-sM to generate digital signals d1-dN, where N is an integer. In an example implementation of this disclosure, the IF processing circuit 242 may support full-spectrum capture where an entire spectrum of each of one or more protocols of interest may be concurrently digitized. For example, theIF processing circuit 252 may comprise M analog-to-digital converters each of which can digitize the entire bandwidth of one of the signals DBS signals s1 . . . sM to generate a corresponding one of signals d1 . . . dM. In such an example implementation, each of the analog-to-digital converters may be as described in U.S. patent application Ser. No. 13/485,003 and/or U.S. patent application Ser. No. 13/336,451, each of which is incorporated by reference above. In another example implementation, only a portion of one or more of the signals s1 to sM may be digitized and which portions are digitized may depend on which channels in the signals s1 to sM are selected by client devices (e.g., which television channels are being consumed by the client(s)). TheIF processing circuit 252 may be configured via one or more control signals (not shown) from thedigital processing circuit 254 and/or theclient interface circuit 258 which may, in turn, be based on upstream communications from one or more clients. - The
digital processing circuit 254 may be operable to process the signals d1-dN to recover information carried in one or more channels contained in the signals d1-dN and output that information to the client interface 258 (as signal 255) and/or via theexpansion interface circuit 256. An example implementation of thedigital processing circuit 254 is described below with reference toFIGS. 3A-3C . - The
client interface circuit 258 may be operable to process data received assignal 255 and output that information ontolink 108 in a format support by one or more client devices coupled to thelink 108. For example, theclient interface circuit 258 may be operable to packetize and transmit data received viasignal 255 in accordance with one or more networking standards (e.g., Ethernet, Multimedia over Coax Alliance (MoCA), DOCSIS, and the like) to client devices that receive satellite data using such standards. Additionally, or alternatively, theclient interface circuit 258 may be operable to perform operations (e.g., digital to analog conversion, modulation, frequency conversion, etc.) for outputting the data received viasignal 255 according to one or more multimedia standards (e.g., ATSC, DVB-S, ISDB-S, and the like) to client devices that receives satellite data using such standards. -
FIG. 2B depicts example circuitry of a satellite reception assembly comprising a direct conversion LNB. INFIG. 2B , a LNB 270 directly outputs the signals d1-dN. Accordingly, the need for the IF processing block is eliminated. -
FIG. 3A depicts a first example implementation of a modular, expandable satellite reception assembly. Thesatellite reception assembly 106 a comprises a housing 122 in which reside theLNB 250, afirst module 302, asecond module 312, and anaggregation circuit 314. The housing 122 may be, for example, part of a satellite reception assembly (e.g., a DBS satellite “dish”) and may be mounted on a boom at or near the focal point of a parabolic reflector. - The two
modules module 302 may be on a first semiconductor die on a first semiconductor package and themodule 312 may be on a second semiconductor die in a second semiconductor package. Additionally or alternatively, themodule 302 may reside on a first printed circuit board and themodule 312 may reside on a second printed circuit board. In an example implementation, themodule 302 may be hard-wired (e.g., soldered) to a motherboard in thehousing 302 whereas themodule 310 may be mounted to the motherboard via a socket. In an example implementation, thesatellite reception assembly 106 a may have been deployed (e.g., mounted to the home or office of a DBS subscriber) without themodule 312, and themodule 312 may have been later installed while the assembly 122 was in the field. - The
module 302 comprises an instance of theIF processing circuit 252, an instance of theclient interface circuit 258, and an instance of thedigital processing circuit 254. Themodule 312 comprises an instance of theclient interface circuit 258 and an instance of thedigital processing circuit 254. - The
IF processing circuit 252 may be as described above with reference toFIG. 2 , for example. - Each instance of the
client interface circuit 258 inFIG. 3A may be as described above with reference toFIG. 2 , for example. As an example, each instance of theclient interface circuit 258 inFIG. 3A may output packets in accordance with a suitable networking standard. Accordingly, theaggregation circuit 314 may perform packet/frame routing/switching and/or act as a host/scheduler to manage delivery of the transport stream data from the two instances of theclient interface circuit 258 onto thelink 108. - Each instance of the
digital processing circuit 254 may comprise one or more instances of expansion interface circuit 256 (labeled 256 a, 256 b, and so on), achannelizer circuit 304, and ademodulation circuit 306. - The
expansion interface circuit 256 may be operable to communicate information across asignal bus 308 in accordance with one or more standards such as reduced gigabit media independent interface (RGMII), a communication standard or protocol operating at 60 GHz, Thunderbolt, or other suitable standard or protocol. In the example implementation depicted inFIG. 3A , one or more of the signals d1 . . . dN are output bymodule 302 via theexpansion interface circuit 256 a. Inmodule 312, signals received viaexpansion interface circuit 256 b are output viaexpansion interface circuit 256 c. In this manner,multiple modules 312 may be installed in the housing 122 in a daisy-chain-connected fashion. In another implementation, additional and/or alternative signals (e.g., selected channels output by the channelizer 304) may be communicated betweenmodules expansion interface circuits 256. - The
channelizer circuit 304 may be operable to process the digitized signals d1-dN (e.g., decimate and filter such signals) such that it outputs the one or more channels of the digitized signals d1-dM that have been selected for consumption by a client device. In this regard, thechannelizer 304 may, for example, serve as a crossbar for selecting a set of desired channels from among a plurality of channels available from one or more broadband sources. In an example full-spectrum capture implementation, N may be equal to 4, with signals d1 corresponding polarization one of satellite one, d2 corresponding to polarization two of satellite one, d3 corresponding to polarization one of satellite two, and d4 corresponding to polarization two of satellite two. In such an example, thechannelizer 304 may select any arbitrary N (an integer) channels from among all channels carried by the two satellites. The number of channels thechannelizer 304 is operable to select may be limited by size, power, and/or cost constraints. In an example implementation,channelizer 304 ofmodule 302 may be operable to select N channels andchannelizer 304 ofmodule 312 may be operable to select M channels where N and M are integers which may or may not be equal. - The
demodulation circuit 306 may comprise be operable to demodulate one or more of the selected channels output by thechannelizer circuit 304 to recover one or more transport streams (e.g., MPEG transport streams) from the selected one or more channels. Thedemodulation circuit 306 may support any suitable modulation standards such as, for example, DVB-S and/or ISDB-S. - In another example implementation, the
digital processing circuit 254 may comprise additional components such as, for example, a forward error correction circuit and/or packet id (PID) filter. By performing forward error correction and/or PID filtering in thesatellite reception assembly 106 a, the amount of bandwidth needed on thelink 108 for transmitting a received channel, for example, may be reduced by elimination of redundant data, parity bits, etc. - In another example implementation, the
module 302 may interface to the direct conversion LNB 270. In such an implementation, theIF processing module 252 may not be populated in themodule 302 and/or may be populated but bypassed. -
FIG. 3B depicts a second example implementation of a modular, expandable satellite reception assembly. Thesatellite reception assembly 106 b comprises a housing 122 in which reside theLNB 250, afirst module 322, asecond module 324, and an aggregation circuit 356. The housing 122 may be, for example, part of a satellite reception assembly (e.g., a DBS satellite “dish”) and may be mounted on a boom at or near the focal point of a parabolic reflector. - The two
modules modules FIG. 3A , but may comprise instances ofdigital processing circuit 326 that, unlikedigital processing circuit 254, does not comprise a demodulator. Consequently, themodules client interface 256 onto thelink 108. In an implementation using frequency division multiplexing on thelink 108, the frequencies at which theclient interface circuits 256 inFIG. 3B output the selected channels may be different (e.g., hard-coded differently, configured differently during installation of themodule 324, and/or configurable during run-time) such that the aggregation circuit 356 may not be unnecessary. - In another example implementation, the
module 302 may interface to the direct conversion LNB 270. In such an implementation, theIF processing module 252 may not be populated in themodule 302 and/or may be populated but bypassed. -
FIG. 3C depicts a third example implementation of a modular, expandable satellite reception assembly. Thesatellite reception assembly 106 c comprises a housing 122 in which reside theLNB 250, an instance of themodule 322, an instance of themodule 324, and an aggregation circuit 356. The housing 122 may be, for example, part of a satellite reception assembly (e.g., a DBS satellite “dish”) and may be mounted on a boom at or near the focal point of a parabolic reflector. - The
module 322 may be as described with reference toFIG. 3B , and themodule 312 may be as described with reference toFIG. 3A . As a result, themodule 322 may output selected modulated channels while themodule 312 may output packetized transport streams and theaggregation circuit 346 may be operable to combine the different types of outputs onto thelink 108. For example, where themodule 312 outputs Ethernet physical layer signals, the aggregation circuit may upconvert signals from themodule 322 to frequencies above the band used for the Ethernet physical layer signals (e.g., 125 MHz). As another example, where themodule 312 uses MoCA, the channels output by themodule 322 may be output on thelink 108 at frequencies below the MoCA band. - In another example implementation, the
module 322 may interface to the direct conversion LNB 270. In such an implementation, theIF processing module 252 may not be populated in themodule 302 and/or may be populated but bypassed. -
FIG. 4 depicts a flowchart of an example process for reception and distribution signals in a modular, expandable satellite reception assembly. The flowchart ofFIG. 4 may correspond to the example implementation inFIG. 3A , for example. Inblock 402, a satellite signal (e.g., Ka or Ku band DBS signal) is received at theLNB 250 via a reflector and a feedhorn of thesatellite reception assembly 106. Inblock 404, the LNB downconverts the received signal to an IF signal (e.g., L-band signal). Inblock 406, theIF processing circuit 252 digitizes the IF signal from the LNB. Inblock 408, the digitized IF signal is conveyed to a plurality of instances of thechannelizer 304, where one or more of the instances may be reached via anexpansion interface circuit 256 andcorresponding signal bus 308. Inblock 410, each instance of thechannelizer 304 selects one or more channel from among the plurality of channels carried in the digitized IF signal. Which one or more channels are selected may be determined based on which channels/programs are being consumed by client devices served by the corresponding instance ofchannelizer 304. Inblock 412, the selected channels from each instance of thechannelizer 304 are demodulated by a corresponding instance ofdemodulation circuit 306 to recover one or more transport streams. Inblock 414, the transport streams are packetized and transmitted by the instances of theclient interface circuits 258. Inblock 416, the packet streams are aggregated onto thelink 108 by theaggregation circuit 314. Inblock 418, the packet streams arrive at client devices which decapsulate the packets to recover the transport stream data. -
FIG. 5 depicts a flowchart for configuration of a modular, expandable satellite reception assembly. Inblock 502, a DBSsatellite reception assembly 106 is installed at a customer premises (e.g., a DBS subscriber's home or office). At the time of installation, thesatellite reception assembly 106 supports up to N clients (e.g., it has circuitry for demodulating N channels). Inblock 504, additional client devices are installed at the premises such that the total number of clients to be served by the satellite reception assembly exceeds N. Inblock 506 an aggregation circuit is installed (if necessary). In block 508 a module (e.g.,module 312 or 324) in installed in thesatellite reception assembly 106 while the satellite reception assembly remained in the field (i.e., remains installed at the subscriber's premises). In one embodiment, the module may be hot-swappable. Thesatellite reception assembly 106 may then begin distributing satellite data to up to N+M clients. Instep 510, when the number of clients being served by thesatellite reception assembly 106 approaches or exceeds N+i*M, where i is the number ofadditional modules additional module - Other embodiments of the invention may provide a non-transitory computer readable medium and/or storage medium, and/or a non-transitory machine readable medium and/or storage medium, having stored thereon, a machine code and/or a computer program having at least one code section executable by a machine and/or a computer, thereby causing the machine and/or computer to perform the steps as described herein.
- Accordingly, the present invention may be realized in hardware, software, or a combination of hardware and software. The present invention may be realized in a centralized fashion in at least one computing system, or in a distributed fashion where different elements are spread across several interconnected computing systems. Any kind of computing system or other apparatus adapted for carrying out the methods described herein is suited. A typical combination of hardware and software may be a general-purpose computing system with a program or other code that, when being loaded and executed, controls the computing system such that it carries out the methods described herein. Another typical implementation may comprise an application specific integrated circuit or chip.
- The present invention may also be embedded in a computer program product, which comprises all the features enabling the implementation of the methods described herein, and which when loaded in a computer system is able to carry out these methods. Computer program in the present context means any expression, in any language, code or notation, of a set of instructions intended to cause a system having an information processing capability to perform a particular function either directly or after either or both of the following: a) conversion to another language, code or notation; b) reproduction in a different material form.
- While the present invention has been described with reference to certain embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the present invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the present invention without departing from its scope. Therefore, it is intended that the present invention not be limited to the particular embodiment disclosed, but that the present invention will include all embodiments falling within the scope of the appended claims.
Claims (21)
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2012
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