WO2016177403A1 - System for accelerated updating of transponders in an image display device - Google Patents

System for accelerated updating of transponders in an image display device Download PDF

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Publication number
WO2016177403A1
WO2016177403A1 PCT/EP2015/059819 EP2015059819W WO2016177403A1 WO 2016177403 A1 WO2016177403 A1 WO 2016177403A1 EP 2015059819 W EP2015059819 W EP 2015059819W WO 2016177403 A1 WO2016177403 A1 WO 2016177403A1
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WO
WIPO (PCT)
Prior art keywords
tuner
processing device
signal processing
under rule
rectified under
Prior art date
Application number
PCT/EP2015/059819
Other languages
French (fr)
Inventor
Sibel Sezen MALKOS
Fatih Aslan
Melike Deniz ALTINYAPRAK
Oguzhan KOSAR
Omer KOC
Murat EGE
Original Assignee
Arcelik Anonim Sirketi
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.)
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Application filed by Arcelik Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Priority to EP15721212.7A priority Critical patent/EP3292696A1/en
Priority to PCT/EP2015/059819 priority patent/WO2016177403A1/en
Priority to TR2016/05703A priority patent/TR201605703A2/en
Publication of WO2016177403A1 publication Critical patent/WO2016177403A1/en

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    • 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
    • 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
    • H04N21/43—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
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4383—Accessing a communication channel
    • 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
    • H04N21/47—End-user applications
    • H04N21/482—End-user interface for program selection

Definitions

  • the present invention relates to a signal processing device having channel list update function, said update function, when called, effecting updating of the channel list in a substantially reduced amount of time.
  • 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.
  • An image display device such as a TV set with a digital receiver-decoder to satisfactorily process the received services.
  • An image display device may receive programs via cable or satellite broadcasting in the form of separate subscription formats.
  • a transponder typically receives a television broadcast signal on the ground from satellite uplink stations and processes the signal by encoding, amplifying and rebroadcasting the same. Satellite receivers then transmit the downlinked signal to a digital receiver of an end-user so that it is decoded and displayed on an image display device.
  • an image display device can be factory-configured such that channel information is preloaded for a plurality of channels, in which case, the image display device will be ready for the first use.
  • users can initiate auto-scan function to automatically retrieve channel-specific information, generally based on a preloaded frequency range or transponder information.
  • 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 a signal processing device is operable so as to automatically manage configuration of channel settings in a substantially accelerated and non-intrusive manner without requiring additional actions on the part of the user, 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 management of channel information in an image display device is carried out automatically in a substantially reduced amount of time by which inaccurate or outdated settings are also clearable.
  • the present invention proposes a signal processing device in the form of a receiver or image display device.
  • the signal processing device receives a plurality of broadcasting services while a first tuner and a second tuner supply transport streams to a digital TV processor.
  • the digital TV processor performs a channel information retrieving operation having simultaneously initiated stages.
  • the search entails simultaneous scanning of frequency bands and simultaneous searching of transponders in association with a satellite.
  • the signal processing device processes the preloaded transponder list to divide it into two frequency bands in the form of C and K u bands.
  • the digital TV processor is configured to simultaneously initiate a first stage of channel information retrieving operation by the first tuner to be succeeded by recording of retrieved broadcasting channels during the first stage while a second stage of the operation is performed by the second tuner searching transponders in a second band such that broadcasting channels retrieved using the first tuner are viewable during at least a part of the second stage of the channel information retrieving operation.
  • Fig. 1 demonstrates a general flow diagram according to which the signal processing device of the invention executes the 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 with a digital TV processor 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.
  • the C-band (4 to 8 GHz) contains frequency ranges used for many satellite communication transmissions.
  • the K u band in the microwave range of frequencies (12-18 GHz) is also used for satellite communications.
  • the tuners are typically connected to dish antennas collecting satellite signals to be focused by the parabolic curvature thereof.
  • signal received from a satellite dish is amplified by a low noise amplifier (LNA) and converted to IF signal (Intermediate frequency) in the form of a block of frequencies by a block converter (the LNB, low noise block downconverter), which can then be processed by the demodulators.
  • LNA low noise amplifier
  • IF signal Intermediate frequency
  • the demodulators then typically output transport streams to the digital TV processor having an audio/video processing unit, which accordingly processes the transport streams and retrieves service data for all the channels.
  • the intermediate frequency is typically created by mixing the carrier signal with a local oscillator signal by heterodyning, which allows the signals in microwave frequencies to be sent over a length of cable.
  • the output of the mixer is an IF signal of a specific bandwidth that can be amplified.
  • 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 image display device can be factory-configured to have a satellite's transponder list. However, as the actual transponder list of a satellite can expand in time so as to accommodate new entries along with old ones, a channel whose transponder information is not updated will typically be viewed as a blank screen during channel surfing.
  • the present invention proposes a system and a method for operating an image display device, having an accelerated channel information retrieving operation as delineated below.
  • the automatic channel information retrieving operation of the invention can be automatically called on a periodical basis by setting a time interval such that transponder information in association with a given channel is processed and channels that exhibit signal error are automatically cleared.
  • the signal processing device of the present invention executes the method of retrieving channel information to be implemented in the following manner:
  • the signal processing device initiates the automatic channel information retrieving operation based on the preloaded transponder list.
  • Television broadcasting signals are searched and parameters such as frequency, symbol rate and polarization of a transponder are fed to the demodulators to verify whether signal lock is achievable.
  • satellite channels are simultaneously processed by at least two couples of tuner and demodulators.
  • the transport stream data at a demodulator output is conveyed to a respective demultiplexer module.
  • the invention enables simultaneous parallel scanning by a plurality of tuner and demodulator lines. According to the invention, different tuner and demodulator lines simultaneously search different bands as will be delineated below.
  • the transponder list typically comprises transponders with different polarization (Vertical, horizontal) and low or high local oscillator frequencies.
  • 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 (LNB) by the receiver
  • Transponders in the C-band and the K u band frequency ranges are respectively scanned by the first and the second tuners.
  • the first and the second tuners are assigned a specific frequency to be tuned.
  • the next transponder frequency in the respective frequency band is assigned to the respective tuner and demodulator couple. If signal lock is verified, a demultiplexer module processes the respective transport stream to extract various streams.
  • the output frequency is typically determined based on the local oscillator frequency.
  • Frequency information and transponder polarization data is conventionally communicated to the LNB on a modulated 22 kHZ tone and by 13V/18V voltage switching.
  • the transponder list divided into two frequency bands is simultaneously processed.
  • the first transponder in the first frequency band (C-band) is processed by the first tuner and demodulator couple while the first transponder in the second frequency band (K u band) is processed by the second tuner and demodulator couple.
  • an LNB control module of the signal processing device provides the required power supply and tone signaling.
  • the local oscillator frequencies are determined to yield an output in the intermediate frequency.
  • Simultaneous channel scanning substantially shortens the processing operation during which the user will have to wait for the completion of the process before taking control of the image display device.
  • the present invention proposes a signal processing device receiving a plurality of broadcasting services and comprising a digital TV processor, a first tuner and a second tuner, the first tuner and second tuner being respectively in association with a first and second demodulator which supply transport streams, the signal processing device being further able to communicate with a display unit.
  • the digital TV processor is configured to simultaneously effect initiation of a first stage of channel information retrieving operation by means of the first tuner, the first stage being succeeded by recording of broadcasting channels retrieved during the first stage and the digital TV processor is configured to simultaneously effect initiation of a second stage of the channel information retrieving operation by means of the second tuner such that broadcasting channels retrieved using the first tuner are viewable during at least part of the second stage of the channel information retrieving operation. Therefore, the time period during which the user will have to wait for the completion of the process before taking control of the image display device is shorter.
  • transponders in the C-band and the Ku band frequency ranges are respectively scanned by the first and the second tuners being assigned specific frequencies to be tuned.
  • the first transponder in the C-band is processed by the first tuner and demodulator couple while the first transponder in the Ku band is processed by the second tuner and demodulator couple.
  • the C-band was historically the first band used for satellite communication systems. As it is overloaded due to the same frequencies being used by terrestrial microwave communication systems, additional transponder frequencies within another frequency band are needed to be processed in a more practical manner as proposed by the present invention. This is merely because any frequency band in addition to the C-band is needed to be separately selected by the user and separately processed by the image display device to retrieve all the channels in both bands.
  • the invention substantially shortens the overall amount of the time duration before all channels in addition to C-band channels were successfully added to the list.
  • each time a signal lock verification is received or signal lock is failed the next transponder frequency respectively in the C-band or the Ku band is assigned to the respective tuner and demodulator couple.
  • the second stage of channel information retrieving operation is carried out by any of the first or second tuner during at least a part of which retrieved broadcasting channels are viewable using the other one of the first or second tuner.
  • the signal processing device is an image display device or a set-top box.
  • the present invention enables simultaneous parallel scanning by a plurality of tuner and demodulator lines, which ensures that the time duration of the channel information retrieving operation directly noticeable to the user during which he will have to wait for the completion of the process before taking control of the image display device is substantially shortened.
  • the present invention ensures that configuration of channel information settings can be better managed in a less intrusive and substantially shorter manner such that users are offered a less troublesome viewing experience without having to wait for a substantial amount of time for completion of the network scan task.
  • the present invention therefore substantially accelerates maintenance of the channel information without requiring user intervention.

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

Abstract

The present invention relates to a signal processing device having channel list update function, the update function, when called, effecting updating of the channel list in a substantially reduced amount of time. More particularly, the present invention relates to a signal processing device receiving a plurality of broadcasting services and comprising a digital TV processor, a first tuner and a second tuner, the first tuner and second tuner being respectively in association with a first and second demodulator which supply transport streams, the signal processing device being further able to communicate with a display unit.

Description

SYSTEM FOR ACCELERATED UPDATING OF TRANSPONDERS IN AN IMAGE DISPLAY DEVICE
[Rectified under Rule 91, 11.05.2015]
The present invention relates to a signal processing device having channel list update function, said update function, when called, effecting updating of
the channel list in a substantially reduced amount of time.
[Rectified under Rule 91, 11.05.2015]
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.
[Rectified under Rule 91, 11.05.2015]
Considering the fact that a large number of television and multimedia services are being made available to consumers today, methods for enabling the host, i.e. an image display device such as a TV set with a digital receiver-decoder to satisfactorily process the received services are required. An image display device may receive programs via cable or satellite broadcasting in the form of separate subscription formats.
[Rectified under Rule 91, 11.05.2015]
A transponder typically receives a television broadcast signal on the ground from satellite uplink stations and processes the signal by encoding, amplifying and rebroadcasting the same. Satellite receivers then transmit the downlinked signal to a digital receiver of an end-user so that it is decoded and displayed on an image display device.
[Rectified under Rule 91, 11.05.2015]
Assuming that a TV service may have hundreds of channels, configuring channel information for a significant number of channels on a manual basis
might take some serious time. It is to be noted that an image display device can be factory-configured such that channel information is preloaded for a
plurality of channels, in which case, the image display device will be ready for the first use.
[Rectified under Rule 91, 11.05.2015]
Alternatively, users can initiate auto-scan function to automatically retrieve channel-specific information, generally based on a preloaded frequency
range or transponder information.
[Rectified under Rule 91, 11.05.2015]
If the auto-scan function is performed such that both the preloaded frequency ranges are scanned, transponder list is checked and an additional blind scan is performed, without inputting any parameters by the user, a substantially longer amount of time is needed for completing this network scan.

[Rectified under Rule 91, 11.05.2015]
Accordingly, configuration of channel information can be better managed and users can be offered a less troublesome viewing experience without
having to manually delete and/or update information on a continual basis or wait for a substantial amount of time for completion of the network scan
task. The present invention therefore substantially accelerates maintenance of the channel information.
[Rectified under Rule 91, 11.05.2015]
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.

[Rectified under Rule 91, 11.05.2015]
The present invention provides a system and method by which a signal processing device is operable so as to automatically manage configuration
of channel settings in a substantially accelerated and non-intrusive manner without requiring additional actions on the part of the user, as provided by
the characterizing features defined in Claim 1.
[Rectified under Rule 91, 11.05.2015]
Primary object of the present invention is to provide a system and method by which management of channel information in an image display device is
carried out automatically in a substantially reduced amount of time by which inaccurate or outdated settings are also clearable.
[Rectified under Rule 91, 11.05.2015]
The present invention proposes a signal processing device in the form of a receiver or image display device. The signal processing device receives a
plurality of broadcasting services while a first tuner and a second tuner supply transport streams to a digital TV processor.
[Rectified under Rule 91, 11.05.2015]
The digital TV processor performs a channel information retrieving operation having simultaneously initiated stages. The search entails simultaneous scanning of frequency bands and simultaneous searching of transponders in association with a satellite. The signal processing device processes the preloaded transponder list to divide it into two frequency bands in the form of C and Ku bands.
[Rectified under Rule 91, 11.05.2015]
The digital TV processor is configured to simultaneously initiate a first stage of channel information retrieving operation by the first tuner to be
succeeded by recording of retrieved broadcasting channels during the first stage while a second stage of the operation is performed by the second
tuner searching transponders in a second band such that broadcasting channels retrieved using the first tuner are viewable during at least a part of
the second stage of the channel information retrieving operation.
[Rectified under Rule 91, 11.05.2015]
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.
[Rectified under Rule 91, 11.05.2015]
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 the claims without recourse to the technical disclosure in the description of the present invention.
[Rectified under Rule 91, 11.05.2015]
Fig. 1 demonstrates a general flow diagram according to which the signal processing device of the invention executes the method according to the
present invention.
[Rectified under Rule 91, 11.05.2015]
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.
[Rectified under Rule 91, 11.05.2015]
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.

[Rectified under Rule 91, 11.05.2015]
The signal processing device with a digital TV processor, 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. The C-band (4 to 8 GHz) contains frequency ranges used for many satellite communication transmissions. The Ku band in the microwave range of frequencies (12-18 GHz) is also used for satellite communications.
[Rectified under Rule 91, 11.05.2015]
The tuners are typically connected to dish antennas collecting satellite signals to be focused by the parabolic curvature thereof. Conventionally, signal received from a satellite dish is amplified by a low noise amplifier (LNA) and converted to IF signal (Intermediate frequency) in the form of a block of frequencies by a block converter (the LNB, low noise block downconverter), which can then be processed by the demodulators. The demodulators then typically output transport streams to the digital TV processor having an audio/video processing unit, which accordingly processes the transport streams and retrieves service data for all the channels. As is known to the skilled reader, the intermediate frequency is typically created by mixing the carrier signal with a local oscillator signal by heterodyning, which allows the signals in microwave frequencies to be sent over a length of cable. The output of the mixer is an IF signal of a specific bandwidth that can be amplified.
[Rectified under Rule 91, 11.05.2015]
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.
[Rectified under Rule 91, 11.05.2015]
The image display device can be factory-configured to have a satellite's transponder list. However, as the actual transponder list of a satellite can
expand in time so as to accommodate new entries along with old ones, a channel whose transponder information is not updated will typically be viewed as a blank screen during channel surfing.
[Rectified under Rule 91, 11.05.2015]
The present invention proposes a system and a method for operating an image display device, having an accelerated channel information retrieving
operation as delineated below. The automatic channel information retrieving operation of the invention can be automatically called on a periodical basis by setting a time interval such that transponder information in association with a given channel is processed and channels that exhibit signal error are automatically cleared.
[Rectified under Rule 91, 11.05.2015]
To this end, the signal processing device of the present invention executes the method of retrieving channel information to be implemented in the
following manner: The signal processing device initiates the automatic channel information retrieving operation based on the preloaded transponder list. Television broadcasting signals are searched and parameters such as frequency, symbol rate and polarization of a transponder are fed to the demodulators to verify whether signal lock is achievable.
[Rectified under Rule 91, 11.05.2015]
According to the invention, satellite channels are simultaneously processed by at least two couples of tuner and demodulators. The transport stream
data at a demodulator output is conveyed to a respective demultiplexer module.
[Rectified under Rule 91, 11.05.2015]
The invention enables simultaneous parallel scanning by a plurality of tuner and demodulator lines. According to the invention, different tuner and
demodulator lines simultaneously search different bands as will be delineated below.
[Rectified under Rule 91, 11.05.2015]
The transponder list typically comprises transponders with different polarization (Vertical, horizontal) and low or high local oscillator frequencies. 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 (LNB) by the receiver

[Rectified under Rule 91, 11.05.2015]
Transponders in the C-band and the Ku band frequency ranges are respectively scanned by the first and the second tuners. Depending on the polarization and local oscillator frequency in relation with a specific transponder, the first and the second tuners are assigned a specific frequency to be tuned. Each time a signal lock verification is received or signal lock is failed, the next transponder frequency in the respective frequency band is assigned to the respective tuner and demodulator couple. If signal lock is verified, a demultiplexer module processes the respective transport stream to extract various streams.
[Rectified under Rule 91, 11.05.2015]
The output frequency is typically determined based on the local oscillator frequency. Frequency information and transponder polarization data is
conventionally communicated to the LNB on a modulated 22 kHZ tone and by 13V/18V voltage switching. The transponder list divided into two frequency bands is simultaneously processed. The first transponder in the first frequency band (C-band) is processed by the first tuner and demodulator couple while the first transponder in the second frequency band (Ku band) is processed by the second tuner and demodulator couple.

[Rectified under Rule 91, 11.05.2015]
According to the present invention, an LNB control module of the signal processing device provides the required power supply and tone signaling.
The local oscillator frequencies are determined to yield an output in the intermediate frequency.
[Rectified under Rule 91, 11.05.2015]
Simultaneous channel scanning substantially shortens the processing operation during which the user will have to wait for the completion of the
process before taking control of the image display device.

[Rectified under Rule 91, 11.05.2015]
In summary, the present invention proposes a signal processing device receiving a plurality of broadcasting services and comprising a digital TV
processor, a first tuner and a second tuner, the first tuner and second tuner being respectively in association with a first and second demodulator which
supply transport streams, the signal processing device being further able to communicate with a display unit.

[Rectified under Rule 91, 11.05.2015]
According to one embodiment of the present invention, the digital TV processor is configured to simultaneously effect initiation of a first stage of
channel information retrieving operation by means of the first tuner, the first stage being succeeded by recording of broadcasting channels retrieved
during the first stage and the digital TV processor is configured to simultaneously effect initiation of a second stage of the channel information
retrieving operation by means of the second tuner such that broadcasting channels retrieved using the first tuner are viewable during at least part of
the second stage of the channel information retrieving operation. Therefore, the time period during which the user will have to wait for the completion of the process before taking control of the image display device is shorter.
[Rectified under Rule 91, 11.05.2015]
According to a further embodiment of the present invention, transponders in the C-band and the Ku band frequency ranges are respectively scanned
by the first and the second tuners being assigned specific frequencies to be tuned.
[Rectified under Rule 91, 11.05.2015]
According to a further embodiment of the present invention, the first transponder in the C-band is processed by the first tuner and demodulator couple while the first transponder in the Ku band is processed by the second tuner and demodulator couple. It is to be noted that the C-band was historically the first band used for satellite communication systems. As it is overloaded due to the same frequencies being used by terrestrial microwave communication systems, additional transponder frequencies within another frequency band are needed to be processed in a more practical manner as proposed by the present invention. This is merely because any frequency band in addition to the C-band is needed to be separately selected by the user and separately processed by the image display device to retrieve all the channels in both bands. As separate processing of the C-band and the second band takes an increased amount of time, the invention substantially shortens the overall amount of the time duration before all channels in addition to C-band channels were successfully added to the list.
[Rectified under Rule 91, 11.05.2015]
According to a further embodiment of the present invention, each time a signal lock verification is received or signal lock is failed, the next
transponder frequency respectively in the C-band or the Ku band is assigned to the respective tuner and demodulator couple.
[Rectified under Rule 91, 11.05.2015]
According to a further embodiment of the present invention, the second stage of channel information retrieving operation is carried out by any of the
first or second tuner during at least a part of which retrieved broadcasting channels are viewable using the other one of the first or second tuner.
[Rectified under Rule 91, 11.05.2015]
According to a further embodiment of the present invention, the signal processing device is an image display device or a set-top box.
[Rectified under Rule 91, 11.05.2015]
Therefore, the present invention enables simultaneous parallel scanning by a plurality of tuner and demodulator lines, which ensures that the time
duration of the channel information retrieving operation directly noticeable to the user during which he will have to wait for the completion of the process before taking control of the image display device is substantially shortened.
[Rectified under Rule 91, 11.05.2015]
In this regard, the present invention ensures that configuration of channel information settings can be better managed in a less intrusive and substantially shorter manner such that users are offered a less troublesome viewing experience without having to wait for a substantial amount of time for completion of the network scan task. The present invention therefore substantially accelerates maintenance of the channel information without requiring user intervention.

Claims (6)

  1. [Rectified under Rule 91, 11.05.2015]
    A signal processing device receiving a plurality of broadcasting services and comprising a digital TV processor, a first tuner and a second tuner, the first tuner and second tuner being respectively in association with a first and second demodulator which supply transport streams, the signal processing device being further able to communicate with a display unit, characterized in that the digital TV processor is configured to simultaneously effect initiation of a first stage of channel information retrieving operation by means of the first tuner, the first stage being succeeded by recording of broadcasting channels retrieved during the first stage and the digital TV processor is configured to simultaneously effect initiation of a second stage of the channel information retrieving operation by means of the second tuner such that broadcasting
    channels retrieved using the first tuner are viewable during at least part of the second state of the channel information retrieving operation.
  2. [Rectified under Rule 91, 11.05.2015]
    A signal processing device as in Claim 1 , characterized in that transponders in the C-band and the Ku band frequency ranges are respectively scanned by the first and the second tuners being assigned specific frequencies to be tuned.
  3. [Rectified under Rule 91, 11.05.2015]
    A signal processing device as in Claim 2, characterized in that the first transponder in the C-band is processed by the first tuner and demodulator
    couple while the first transponder in the Ku band is processed by the second tuner and demodulator couple.
  4. [Rectified under Rule 91, 11.05.2015]
    A signal processing device as in Claim 3, characterized in that each time a signal lock verification is received or signal lock is failed, the next transponder frequency respectively in the C-band or the Ku band is assigned to the respective tuner and demodulator couple.
  5. [Rectified under Rule 91, 11.05.2015]
    A signal processing device as in Claim 4, characterized in that the second stage of channel information retrieving operation is carried out by any of the first or second tuner during at least a part of which retrieved broadcasting channels are viewable using the other one of the first or second tuner.
  6. [Rectified under Rule 91, 11.05.2015]
    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/EP2015/059819 2015-05-05 2015-05-05 System for accelerated updating of transponders in an image display device WO2016177403A1 (en)

Priority Applications (3)

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EP15721212.7A EP3292696A1 (en) 2015-05-05 2015-05-05 System for accelerated updating of transponders in an image display device
PCT/EP2015/059819 WO2016177403A1 (en) 2015-05-05 2015-05-05 System for accelerated updating of transponders in an image display device
TR2016/05703A TR201605703A2 (en) 2015-05-05 2016-05-02 A SYSTEM FOR FAST SEARCHING OF TRASPONDERS IN A IMAGING DEVICE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2015/059819 WO2016177403A1 (en) 2015-05-05 2015-05-05 System for accelerated updating of transponders in an image display device

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Citations (4)

* 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
EP1838096A2 (en) * 2006-03-22 2007-09-26 Kabushiki Kaisha Toshiba TV signal receiving apparatus and channel scanning method
US20110051012A1 (en) * 2009-08-31 2011-03-03 Kabushiki Kaisha Toshiba Receiver and receiving method
US20110134336A1 (en) * 2009-12-04 2011-06-09 Hyundai Motor Company Digital multimedia broadcasting system for reducing scan time, and method for the same

Patent Citations (4)

* 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
EP1838096A2 (en) * 2006-03-22 2007-09-26 Kabushiki Kaisha Toshiba TV signal receiving apparatus and channel scanning method
US20110051012A1 (en) * 2009-08-31 2011-03-03 Kabushiki Kaisha Toshiba Receiver and receiving method
US20110134336A1 (en) * 2009-12-04 2011-06-09 Hyundai Motor Company Digital multimedia broadcasting system for reducing scan time, and method for the same

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EP3292696A1 (en) 2018-03-14

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