WO2017211397A1 - System with dynamic time duration communication signal between a satellite receiver and a multi-dish switch - Google Patents

System with dynamic time duration communication signal between a satellite receiver and a multi-dish switch Download PDF

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Publication number
WO2017211397A1
WO2017211397A1 PCT/EP2016/062944 EP2016062944W WO2017211397A1 WO 2017211397 A1 WO2017211397 A1 WO 2017211397A1 EP 2016062944 W EP2016062944 W EP 2016062944W WO 2017211397 A1 WO2017211397 A1 WO 2017211397A1
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Prior art keywords
processing device
signal processing
time duration
signal
dish
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PCT/EP2016/062944
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French (fr)
Inventor
Tevfik Orkun
Mumun AKSAKAL
Original Assignee
Arcelik Anonim Sirketi
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Priority to PCT/EP2016/062944 priority Critical patent/WO2017211397A1/en
Priority to TR2017/08224A priority patent/TR201708224A2/en
Publication of WO2017211397A1 publication Critical patent/WO2017211397A1/en

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    • 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 present invention relates to an image display device with a built-in satellite receiver or a set-top box with dynamic time duration communication signal with a multi-dish switch.
  • Digital and interactive TV systems provide a comprehensive amount of TV channels and programs leading to the general outcome that conventional methods for configuring the operation of the image display device from among a plurality of setting parameters may become inefficient to the extent that it is unperformable in a time-saving manner.
  • a transponder typically receives a television signal on the ground from satellite uplink stations and processes the signal by encoding, amplifying and rebroadcasting the same. Satellite receivers then transmit the same to a digital receiver of an end-user so that it is decoded and displayed on an image display device.
  • DiSEqC is a special communication protocol for use between a satellite receiver and a device such as a multi-dish switch or a small dish antenna rotor.
  • Image display devices with built-in satellite receivers or a set-top boxes rely on the DiSEqC (Digital Satellite Equipment Control) protocol when communicating with multi-dish switches or low-noise block downconverters (LNB) as the receiving devices mounted on satellite dishes.
  • the DiSEqC standard is a single master, single or multiple slave system, so communications may be initiated only by the master tuner-receiver and the slave devices can be switches, LNBs.
  • the present invention is devised under the recognition that due to the particular specifications of electronic circuit elements in the microswitch control circuits, the time duration between the continuous tone signal and the full DiSEqC message according to the DiSEqC protocol timing diagram as seen in Fig. 1 can vary depending on the specific brand and model of the microswitch module. In the event that the time duration between the continuous tone signal and the full DiSEqC message is not sufficient for performing accurate switching by the microswitches, sound functioning of the system cannot be ensured.
  • US6055431 defines a method for controlling the operation of multiple beam antenna systems in communication with satellite transponders.
  • the method controls the coverage area assignments, frequency assignments, transmitted power level assignments, and component allocation assignments of these multiple beam antenna transponders in response to the existing and time varying demands for satellite resources.
  • the method manages the operation of the satellite transponders to optimize the overall capacity of the communication satellite.
  • the present invention provides a system and method by which an image display device is operable so as to automatically manage communication parameters between a satellite receiver and a multi-dish switch, as provided by the characterizing features defined in Claim 1.
  • Primary object of the present invention is to provide a system and method by which the time duration between the continuous tone signal and the full DiSEqC message is dynamically variable.
  • the present invention proposes an image display device in connection with a receiver or alternatively comprising a built-in receiver unit receiving a plurality of broadcasting services while at least one satellite tuner supplies transport streams to be processed.
  • the image display device communicates with said multi-dish switching module through Digital Satellite Equipment Control communication protocol in the manner that an electronic control unit thereof gradually dynamically adapts the time duration between a continuous tone signal and a full Digital Satellite Equipment Control message to the multi-dish switching module equipment being used.
  • Fig. 1 demonstrates a conventional timing diagram according to the DiSEqC (Digital Satellite Equipment Control) bus specification as provided by Eutelsat as the standards agency for the protocol.
  • DiSEqC Digital Satellite Equipment Control
  • Fig. 2 demonstrates a general flow diagram according to which the signal processing device of the invention executes a method according to the present invention.
  • the present invention proposes a signal processing device in the form of an image display device or a set-top box receiving programs via satellite broadcasting for instance in the form of separate subscription formats.
  • a set-top box typically contains at least one tuner input, operating in connection with an image display device.
  • the image display device itself can receive programs using built-in satellite tuners.
  • Digital and interactive TV systems provide a comprehensive amount of TV channels and programs.
  • a conventional structure receiving program contents receives a transport stream via a tuner.
  • the receiver-decoder In order for viewing a first program content and processing a second program content, the receiver-decoder should have two tuners, which also enables various types of services including interactive functions such as picture-in-picture.
  • the signal processing device in the form of an image display device in accordance with the invention can be connected to a set-top box, the latter having a plurality of tuners.
  • the image display device itself or the receiver (set-top box) can therefore have multiple tuners as well as a plurality of demodulators suitable for receiving broadcast multimedia content.
  • receivers capable of receiving and tuning to signals of different generations e.g. DVB-S, DVB-S2
  • Satellite broadcasting involves a frequency band of 10.7 – 12.75 GHz while the Low Noise Block (LNB) converts the signal into a 950 – 2200 MHz frequency band as supported by the receiver.
  • LNB Low Noise Block
  • transponder By way of processing the signal received from a satellite dish, specific transponder information of each channel is retrievable.
  • a transponder typically receives a television signal from the satellite uplink stations on the ground, encoding, amplifying and rebroadcasting the same.
  • Transponder parameters typically involve satellite name, transponder frequency in MHz, polarization, symbol rate in Ksym/s etc.
  • the tuners can typically be connected to a satellite dish or a multi-dish switching module.
  • signal received from a satellite dish is converted to IF signal (Intermediate frequency), which can then be processed by the demodulator.
  • the demodulator typically outputs transport streams to a digital TV processor, which accordingly processes said transport streams and retrieves channel information for all the channels.
  • the image display device or the satellite receiver communicates with the multi-dish switch module through a communication protocol such as DiSEqC 2.0. The communication is typically accomplished through a coaxial cable between the signal processing device and the low noise block downconverter.
  • the open standard Digital Satellite Equipment Control relies on DiSEqC messages carried on a modulated 22 kHZ tone in the form of sequences of short bursts communicated to the low noise block downconverter by the receiver.
  • a conventional timing diagram according to the DiSEqC bus specification is seen in Fig. 1.
  • the DiSEqC standard is a single master, single or multiple slave system, so communications may be initiated only by the master tuner-receiver and the slave devices can be switches and LNBs.
  • the time duration between the continuous tone signal and the full DiSEqC message can vary depending on the specific brand and model of the microswitch module, it is ensured that said time duration is sufficient for allowing accurate switching by the microswitches.
  • the time duration between the continuous tone signal and the full DiSEqC message is dynamically variable in that in the event that it is determined that said time duration is not sufficient for performing switching by the microswitches in a microswitch control circuit in a multiple slave system, then the electronic control unit of the signal processing device resends the DiSEqC message/signal by increasing said time duration between the continuous tone signal and the full DiSEqC message by a certain amount.
  • the preset value of said time duration is lower than 15 ms although the standart value is given as greater than 15 ms as seen in Fig. 1. However, the value is gradually increased and the optimum amount of time duration to allow switching by the specific multi-switch unit is accordingly determined.
  • the time duration between the continuous tone signal and the full DiSEqC message determined as the optimum time duration in respect of the specific equipment is stored in a memory unit of the signal processing device. This value is to be used as the standard time duration in future communications between the satellite receiver and the multi-dish switch. The calibrating operation should be repeated in case the satellite receiver or the image display device with the satellite receiver is connected to another multi-switch module. Alternatively, the time duration between the continuous tone signal and the full DiSEqC message can be manually set.
  • the present invention proposes a signal processing device for receiving a plurality of satellite broadcasting services in signal communication with a multi-dish switching module, said signal processing device comprising an electronic control unit and at least one tuner in association with a demodulator which supplies transport streams, said signal processing device being further capable to communicate with a display unit.
  • said signal processing device communicates with said multi-dish switching module through Digital Satellite Equipment Control communication protocol.
  • said electronic control unit is configured to adaptively vary the time duration between a continuous tone signal and a full Digital Satellite Equipment Control message whereby timely switching by microswitches of said multi-dish switching module is ensured.
  • the electronic control unit of the signal processing device resends the full Digital Satellite Equipment Control message by increasing said time duration between the continuous tone signal and the full Digital Satellite Equipment Control message by a certain amount.
  • the preset value of said time duration is lower than 15 ms.
  • the value of the time duration between said continuous tone signal and said full Digital Satellite Equipment Control message is gradually increased to retrieve the optimum amount of the time duration.
  • the signal processing device is an image display device or a set-top box.
  • the present invention ensures that the time duration between the continuous tone signal and the full DiSEqC message is dynamically variable in association with a specific equipment model.
  • the image display device is operable to automatically manage communication parameters between the satellite receiver and the multi-dish switch.

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  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

The present invention relates to an image display device with a built-in satellite receiver or a set-top box with dynamic time duration communication signal with a multi-dish switch. The present invention more particularly relates to a signal processing device for receiving a plurality of satellite broadcasting services in signal communication with a multi-dish switching module, said signal processing device comprising an electronic control unit and at least one tuner in association with a demodulator which supplies transport streams, said signal processing device being further capable to communicate with a display unit.

Description

SYSTEM WITH DYNAMIC TIME DURATION COMMUNICATION SIGNAL BETWEEN A SATELLITE RECEIVER AND A MULTI-DISH SWITCH
The present invention relates to an image display device with a built-in satellite receiver or a set-top box with dynamic time duration communication signal with a multi-dish switch.
Digital and interactive TV systems provide a comprehensive amount of TV channels and programs leading to the general outcome that conventional methods for configuring the operation of the image display device from among a plurality of setting parameters may become inefficient to the extent that it is unperformable in a time-saving manner.
A transponder typically receives a television signal on the ground from satellite uplink stations and processes the signal by encoding, amplifying and rebroadcasting the same. Satellite receivers then transmit the same to a digital receiver of an end-user so that it is decoded and displayed on an image display device. DiSEqC is a special communication protocol for use between a satellite receiver and a device such as a multi-dish switch or a small dish antenna rotor. Image display devices with built-in satellite receivers or a set-top boxes rely on the DiSEqC (Digital Satellite Equipment Control) protocol when communicating with multi-dish switches or low-noise block downconverters (LNB) as the receiving devices mounted on satellite dishes. The DiSEqC standard is a single master, single or multiple slave system, so communications may be initiated only by the master tuner-receiver and the slave devices can be switches, LNBs.
The present invention is devised under the recognition that due to the particular specifications of electronic circuit elements in the microswitch control circuits, the time duration between the continuous tone signal and the full DiSEqC message according to the DiSEqC protocol timing diagram as seen in Fig. 1 can vary depending on the specific brand and model of the microswitch module. In the event that the time duration between the continuous tone signal and the full DiSEqC message is not sufficient for performing accurate switching by the microswitches, sound functioning of the system cannot be ensured.
Among others, one of the prior art disclosures in the technical field of the present invention can be referred to as US6055431, which defines a method for controlling the operation of multiple beam antenna systems in communication with satellite transponders. The method controls the coverage area assignments, frequency assignments, transmitted power level assignments, and component allocation assignments of these multiple beam antenna transponders in response to the existing and time varying demands for satellite resources. The method manages the operation of the satellite transponders to optimize the overall capacity of the communication satellite.
The present invention provides a system and method by which an image display device is operable so as to automatically manage communication parameters between a satellite receiver and a multi-dish switch, as provided by the characterizing features defined in Claim 1.
Primary object of the present invention is to provide a system and method by which the time duration between the continuous tone signal and the full DiSEqC message is dynamically variable.
The present invention proposes an image display device in connection with a receiver or alternatively comprising a built-in receiver unit receiving a plurality of broadcasting services while at least one satellite tuner supplies transport streams to be processed. The image display device communicates with said multi-dish switching module through Digital Satellite Equipment Control communication protocol in the manner that an electronic control unit thereof gradually dynamically adapts the time duration between a continuous tone signal and a full Digital Satellite Equipment Control message to the multi-dish switching module equipment being used.
Accompanying drawings are given solely for the purpose of exemplifying a system and method by which an image display device is operable, whose advantages over prior art were outlined above and will be explained in brief hereinafter.
The drawings are not meant to delimit the scope of protection as identified in the claims nor should they be referred to alone in an effort to interpret the scope identified in said claims without recourse to the technical disclosure in the description of the present invention.
Fig. 1 demonstrates a conventional timing diagram according to the DiSEqC (Digital Satellite Equipment Control) bus specification as provided by Eutelsat as the standards agency for the protocol.
Fig. 2 demonstrates a general flow diagram according to which the signal processing device of the invention executes a method according to the present invention.
The present invention proposes a signal processing device in the form of an image display device or a set-top box receiving programs via satellite broadcasting for instance in the form of separate subscription formats. A set-top box typically contains at least one tuner input, operating in connection with an image display device. Alternatively, the image display device itself can receive programs using built-in satellite tuners.
Digital and interactive TV systems provide a comprehensive amount of TV channels and programs. A conventional structure receiving program contents receives a transport stream via a tuner. In order for viewing a first program content and processing a second program content, the receiver-decoder should have two tuners, which also enables various types of services including interactive functions such as picture-in-picture.
The signal processing device in the form of an image display device in accordance with the invention can be connected to a set-top box, the latter having a plurality of tuners. The image display device itself or the receiver (set-top box) can therefore have multiple tuners as well as a plurality of demodulators suitable for receiving broadcast multimedia content. In this regard, receivers capable of receiving and tuning to signals of different generations (e.g. DVB-S, DVB-S2) can be in use. Satellite broadcasting involves a frequency band of 10.7 – 12.75 GHz while the Low Noise Block (LNB) converts the signal into a 950 – 2200 MHz frequency band as supported by the receiver.
By way of processing the signal received from a satellite dish, specific transponder information of each channel is retrievable. A transponder typically receives a television signal from the satellite uplink stations on the ground, encoding, amplifying and rebroadcasting the same. Transponder parameters typically involve satellite name, transponder frequency in MHz, polarization, symbol rate in Ksym/s etc.
The tuners can typically be connected to a satellite dish or a multi-dish switching module. Conventionally, signal received from a satellite dish is converted to IF signal (Intermediate frequency), which can then be processed by the demodulator. The demodulator typically outputs transport streams to a digital TV processor, which accordingly processes said transport streams and retrieves channel information for all the channels. The image display device or the satellite receiver communicates with the multi-dish switch module through a communication protocol such as DiSEqC 2.0. The communication is typically accomplished through a coaxial cable between the signal processing device and the low noise block downconverter. The open standard Digital Satellite Equipment Control (DiSEqC) relies on DiSEqC messages carried on a modulated 22 kHZ tone in the form of sequences of short bursts communicated to the low noise block downconverter by the receiver. A conventional timing diagram according to the DiSEqC bus specification is seen in Fig. 1. The DiSEqC standard is a single master, single or multiple slave system, so communications may be initiated only by the master tuner-receiver and the slave devices can be switches and LNBs.
According to the present invention, as due to particular specifications of electronic circuit elements in the microswitch control circuits in a multiple slave system, the time duration between the continuous tone signal and the full DiSEqC message can vary depending on the specific brand and model of the microswitch module, it is ensured that said time duration is sufficient for allowing accurate switching by the microswitches.
Therefore, the time duration between the continuous tone signal and the full DiSEqC message is dynamically variable in that in the event that it is determined that said time duration is not sufficient for performing switching by the microswitches in a microswitch control circuit in a multiple slave system, then the electronic control unit of the signal processing device resends the DiSEqC message/signal by increasing said time duration between the continuous tone signal and the full DiSEqC message by a certain amount. According to the present invention, the preset value of said time duration is lower than 15 ms although the standart value is given as greater than 15 ms as seen in Fig. 1. However, the value is gradually increased and the optimum amount of time duration to allow switching by the specific multi-switch unit is accordingly determined.
It is to be noted that this approach has the particular advantage of decreasing time amounts for channel switching in respect of different systems. The time duration between the continuous tone signal and the full DiSEqC message determined as the optimum time duration in respect of the specific equipment is stored in a memory unit of the signal processing device. This value is to be used as the standard time duration in future communications between the satellite receiver and the multi-dish switch. The calibrating operation should be repeated in case the satellite receiver or the image display device with the satellite receiver is connected to another multi-switch module. Alternatively, the time duration between the continuous tone signal and the full DiSEqC message can be manually set.
In a nutshell, the present invention proposes a signal processing device for receiving a plurality of satellite broadcasting services in signal communication with a multi-dish switching module, said signal processing device comprising an electronic control unit and at least one tuner in association with a demodulator which supplies transport streams, said signal processing device being further capable to communicate with a display unit.
In one embodiment of the present invention, said signal processing device communicates with said multi-dish switching module through Digital Satellite Equipment Control communication protocol.
In a further embodiment of the present invention, said electronic control unit is configured to adaptively vary the time duration between a continuous tone signal and a full Digital Satellite Equipment Control message whereby timely switching by microswitches of said multi-dish switching module is ensured.
In a further embodiment of the present invention, if the time duration for performing switching by by microswitches of said multi-dish switching module is not sufficient, then the electronic control unit of the signal processing device resends the full Digital Satellite Equipment Control message by increasing said time duration between the continuous tone signal and the full Digital Satellite Equipment Control message by a certain amount.
In a further embodiment of the present invention, the preset value of said time duration is lower than 15 ms.
In a further embodiment of the present invention, the value of the time duration between said continuous tone signal and said full Digital Satellite Equipment Control message is gradually increased to retrieve the optimum amount of the time duration.
In a further embodiment of the present invention, the signal processing device is an image display device or a set-top box.
Accordingly, the present invention ensures that the time duration between the continuous tone signal and the full DiSEqC message is dynamically variable in association with a specific equipment model. The image display device is operable to automatically manage communication parameters between the satellite receiver and the multi-dish switch.

Claims (5)

  1. A signal processing device for receiving a plurality of satellite broadcasting services in signal communication with a multi-dish switching module, said signal processing device comprising an electronic control unit and at least one tuner in association with a demodulator which supplies transport streams, said signal processing device being further capable to communicate with a display unit characterized in that;
    said signal processing device communicates with said multi-dish switching module through Digital Satellite Equipment Control communication protocol and,
    said electronic control unit is configured to adaptively vary the time duration between a continuous tone signal and a full Digital Satellite Equipment Control message whereby timely switching by microswitches of said multi-dish switching module is ensured.
  2. A signal processing device as in Claim 1, characterized in that if the time duration for performing switching by by microswitches of said multi-dish switching module is not sufficient, then the electronic control unit of the signal processing device resends the full Digital Satellite Equipment Control message by increasing said time duration between the continuous tone signal and the full Digital Satellite Equipment Control message by a certain amount.
  3. A signal processing device as in Claim 1 or 2, characterized in that the preset value of said time duration is lower than 15 ms.
  4. A signal processing device as in Claim 3, characterized in that the value of the time duration between said continuous tone signal and said full Digital Satellite Equipment Control message is gradually increased to retrieve the optimum amount of the time duration.
  5. A signal processing device as in any preceding Claims, characterized in that the signal processing device is an image display device or a set-top box.
PCT/EP2016/062944 2016-06-08 2016-06-08 System with dynamic time duration communication signal between a satellite receiver and a multi-dish switch WO2017211397A1 (en)

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PCT/EP2016/062944 WO2017211397A1 (en) 2016-06-08 2016-06-08 System with dynamic time duration communication signal between a satellite receiver and a multi-dish switch
TR2017/08224A TR201708224A2 (en) 2016-06-08 2017-06-05 SYSTEM WITH DYNAMIC TIME COMMUNICATION SIGNAL BETWEEN A SATELLITE RECEIVER AND A MULTIPLANT DISTRIBUTOR

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6055431A (en) 1997-12-19 2000-04-25 The Aerospace Corporation Adaptive control of multiple beam communication transponders
US20040028149A1 (en) * 2002-08-08 2004-02-12 Krafft Stephen Edward Programmable integrated DiSEqC transceiver

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6055431A (en) 1997-12-19 2000-04-25 The Aerospace Corporation Adaptive control of multiple beam communication transponders
US20040028149A1 (en) * 2002-08-08 2004-02-12 Krafft Stephen Edward Programmable integrated DiSEqC transceiver

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
"Digital Satellite Equipment Control (DisEqC), Bus Functional Specification; version 4.2", BUS FUNCTIONAL SPECIFICATION, EUTELSAT, PARIS, FR, 25 February 1998 (1998-02-25), XP002348247 *
EUTELSAT: "Digital Satellite Equipment Control (DiSEqC(TM)) simple "toneburst" detection circuit", 12 August 1996 (1996-08-12), XP055319788, Retrieved from the Internet <URL:http://www.eutelsat.com/files/contributed/satellites/pdf/Diseqc/associated docs/simple_tone_burst_detec.pdf> [retrieved on 20161115] *
EUTELSAT: "Digital Satellite Equipment Control (DiSEqC), APPLICATION INFORMATION FOR TUNER-RECEIVER/IRDS", 12 April 1996 (1996-04-12), XP055319792, Retrieved from the Internet <URL:http://www.eutelsat.com/files/contributed/satellites/pdf/Diseqc/associated docs/applic_info_turner-receiver.pdf> [retrieved on 20161115] *

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