WO2023012727A1 - Techniques de gestion de zone limite de diffusion atsc 3.0 à l'aide d'erreurs de qualité de signal et de paquets pour différencier des services dupliqués sur différentes fréquences pendant le balayage - Google Patents

Techniques de gestion de zone limite de diffusion atsc 3.0 à l'aide d'erreurs de qualité de signal et de paquets pour différencier des services dupliqués sur différentes fréquences pendant le balayage Download PDF

Info

Publication number
WO2023012727A1
WO2023012727A1 PCT/IB2022/057275 IB2022057275W WO2023012727A1 WO 2023012727 A1 WO2023012727 A1 WO 2023012727A1 IB 2022057275 W IB2022057275 W IB 2022057275W WO 2023012727 A1 WO2023012727 A1 WO 2023012727A1
Authority
WO
WIPO (PCT)
Prior art keywords
receiver
digital television
plp
broadcast
service
Prior art date
Application number
PCT/IB2022/057275
Other languages
English (en)
Inventor
Graham Clift
Luke Fay
Brant Candelore
Adam Goldberg
Fred Ansfield
Loren F. Pineda
Original Assignee
Sony Group Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US17/487,753 external-priority patent/US11848716B2/en
Application filed by Sony Group Corporation filed Critical Sony Group Corporation
Publication of WO2023012727A1 publication Critical patent/WO2023012727A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
    • H04N21/4263—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
    • 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

Definitions

  • This application relates to technical advances necessarily rooted in computer technology and directed to digital television, and more particularly to Advanced Television Systems Committee (ATSC) 3.0.
  • ATSC Advanced Television Systems Committee
  • ATSC 3.0 The Advanced Television Systems Committee (ATSC) 3.0 suite of standards is a set of over a dozen industry technical standards as indicated in A/300 for delivering the next generation of broadcast television.
  • ATSC 3.0 supports delivery of a wide range of television services including televised video, interactive services, non-real time delivery of data, and tailored advertising to a large number of receiving devices, from ultra-high definition televisions to wireless telephones.
  • ATSC 3.0 also orchestrates coordination between broadcast content (referred to as “over the air”) and related broadband delivered content and services (referred to as “over the top”).
  • ATSC 3.0 is designed to be flexible so that as technology evolves, advances can be readily incorporated without requiring a complete overhaul of any related technical standard.
  • an ATSC 3.0 receiver scans for services including in reception areas that contain two or more frequencies carrying the same service, as may occur in a boundary region in which broadcast signals from two regional ATSC 3.0 broadcaster stations overlap. These boundary regions exist in a multifrequency network (MFN).
  • MFN multifrequency network
  • a method in digital television having at least one boundary region in which at least one DTV receiver receives broadcast signals from at least first and second digital television broadcast assemblies, includes, using a digital television receiver, enabling a physical layer pipe (PLP). The method also includes scanning a frequency spectrum using the PLP to render a result and using the result for identifying at least first and second respective frequencies from the respective first and second digital television broadcast assemblies as carrying a first service. The method further includes identifying respective first and second quality metrics associated with the respective first and second frequencies to form a basis for selecting which frequency to tune to for acquiring the first service.
  • PLP physical layer pipe
  • the receiver can include an advanced television systems committee (ATSC) 3.0 receiver.
  • ATSC advanced television systems committee
  • the method may include automatically tuning to the first or second frequency based on the quality metric of the respective first or second frequency without user intervention. In other embodiments, the method may include presenting an audibly or visually perceptive message to tune to the first or second frequency based on the quality metric of the respective first or second frequency.
  • the digital TV receiver includes one and only one tuner and is not a mobile receiver.
  • the PLP includes a lower leveling signaling (LLS) PLP, and identifying at least first and second respective frequencies requires no PLPs other than the LLS PLP.
  • LLS lower leveling signaling
  • a digital television apparatus in another aspect, includes at least one receiver configured to receive digital television from a digital television transmitter system that includes at least first and second broadcast transmitters.
  • the receiver includes at least one processor programmed with instructions to scan a frequency spectrum using a lower level signaling (LLS) physical layer pipe (PLP).
  • LLS lower level signaling
  • PLP physical layer pipe
  • a digital television apparatus in another aspect, includes at least one receiver that in turn includes at least one processor programmed with instructions to configure the processor to receive from plural digital television broadcasters respective frequencies.
  • the instructions are executable to identify at least one service carried by at least first and second frequencies from respective first and second digital television broadcasters. Also, the instructions are executable to identify respective first and second quality metrics of the respective first and second frequencies and to automatically tune to, or present a message to tune to, the first frequency based at least in part on a relationship between the first and second quality metrics.
  • FIG 1 illustrates an Advanced Television Systems Committee (ATSC) 3.0 system
  • FIG. 1 illustrates components of the devices shown in Figure 1;
  • FIG. 3 illustrates an example specific system
  • Figure 4 illustrates a first example embodiment of a digital TV receiver
  • Figure 5 illustrates a second example embodiment of a digital TV receiver
  • Figure 6 illustrates example logic in example flow chart format consistent with present principles
  • FIG. 7 illustrates an example user interface (UI) consistent with present principles
  • Figure 8 illustrates example logic in example flow chart format consistent with present principles
  • Figure 9 illustrates example logic in example flow chart format consistent with present principles.
  • FIG. 10 illustrates an example user interface (UI) consistent with present principles.
  • An example system herein may include ATSC 3.0 source components and client components, connected via broadcast and/or over a network such that data may be exchanged between the client and ATSC 3.0 source components.
  • the client components may include one or more computing devices including portable televisions (e.g. smart TVs, Internet-enabled TVs), portable computers such as laptops and tablet computers, and other mobile devices including smart phones and additional examples discussed below.
  • portable televisions e.g. smart TVs, Internet-enabled TVs
  • portable computers e.g. smart TVs, Internet-enabled TVs
  • portable computers such as laptops and tablet computers
  • other mobile devices including smart phones and additional examples discussed below.
  • These client devices may operate with a variety of operating environments.
  • some of the client computers may employ, as examples, operating systems from Microsoft, or a Unix operating system, or operating systems produced by Apple Computer or Google, such as Android®.
  • These operating environments may be used to execute one or more browsing programs, such as a browser made by Microsoft or Google or Mozilla or other browser
  • ATSC 3.0 publication A/331, Annex B, section 13, incorporated herein by reference, may be particularly relevant to techniques described herein.
  • ATSC 3.0 source components may include broadcast transmission components and servers and/or gateways that may include one or more processors executing instructions that configure the source components to broadcast data and/or to transmit data over a network such as the Internet.
  • a client component and/or a local ATSC 3.0 source component may be instantiated by a game console such as a Sony PlayStation®, a personal computer, etc.
  • servers and/or clients can include firewalls, load balancers, temporary storages, and proxies, and other network infrastructure for reliability and security.
  • instructions refer to computer-implemented steps for processing information in the system. Instructions can be implemented in software, firmware or hardware and include any type of programmed step undertaken by components of the system.
  • a processor may be a single- or multi-chip processor that can execute logic by means of various lines such as address lines, data lines, and control lines and registers and shift registers.
  • Software modules described by way of the flow charts and user interfaces herein can include various sub-routines, procedures, etc. Without limiting the disclosure, logic stated to be executed by a particular module can be redistributed to other software modules and/or combined together in a single module and/or made available in a shareable library. While flow chart format may be used, it is to be understood that software may be implemented as a state machine or other logical method.
  • logical blocks, modules, and circuits can be implemented or performed with a general-purpose processor, a digital signal processor (DSP), a field programmable gate array (FPGA) or other programmable logic device such as an application specific integrated circuit (ASIC), discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein.
  • DSP digital signal processor
  • FPGA field programmable gate array
  • ASIC application specific integrated circuit
  • a processor can be implemented by a controller or state machine or a combination of computing devices.
  • HTTP hypertext markup language
  • ROM read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • CD-ROM compact disk read-only memory
  • DVD digital versatile disc
  • a connection may establish a computer-readable medium.
  • Such connections can include, as examples, hard-wired cables including fiber optics and coaxial wires and digital subscriber line (DSL) and twisted pair wires.
  • a system having at least one of A, B, and C includes systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.
  • an example of an ATSC 3.0 source component is labeled “broadcaster equipment” 10 and may include over-the-air (OTA) equipment 12 for wirelessly broadcasting, typically via orthogonal frequency division multiplexing (OFDM) in a one-to-many relationship, television data to plural receivers 14 such as ATSC 3.0 televisions.
  • OTA over-the-air
  • OFDM orthogonal frequency division multiplexing
  • One or more receivers 14 may communicate with one or more companion devices 16 such as remote controls, tablet computers, mobile telephones, and the like over a short range, typically wireless link 18 that may be implemented by Bluetooth®, low energy Bluetooth, other near field communication (NFC) protocol, infrared (IR), etc.
  • one or more of the receivers 14 may communicate, via a wired and/or wireless network link 20 such as the Internet, with over-the-top (OTT) equipment 22 of the broadcaster equipment 10 typically in a one-to-one relationship.
  • the OTA equipment 12 may be co-located with the OTT equipment 22 or the two sides 12, 22 of the broadcaster equipment 10 may be remote from each other and may communicate with each other through appropriate means.
  • a receiver 14 may receive ATSC 3.0 television signals OTA over a tuned-to ATSC 3.0 television channel and may also receive related content, including television, OTT (broadband).
  • computerized devices described in all of the figures herein may include some or all of the components set forth for various devices in Figures 1 and 2.
  • Figure 2 illustrates an example protocol stack that may be implemented by a combination of hardware and software.
  • broadcasters can send hybrid service delivery in which one or more program elements are delivered via a computer network (referred to herein as “broadband” and “over-the-top” (OTT)) as well as via a wireless broadcast (referred to herein as “broadcast” and “over-the-air” (OTA)).
  • Figure 2 also illustrates an example stack with hardware that may be embodied by a receiver.
  • the application layer 204 can include one or more software applications written in, e.g., HTML5/Javascript running in a runtime environment.
  • the applications in the application stack 204 may include linear TV applications, interactive service applications, companion screen applications, personalization applications, emergency alert applications, and usage reporting applications.
  • the applications typically are embodied in software that represents the elements that the viewer experiences, including video coding, audio coding and the run-time environment.
  • an application may be provided that enables a user to control dialog, use alternate audio tracks, control audio parameters such as normalization and dynamic range, and so on.
  • the presentation layer 206 includes, on the broadcast (OTA) side, broadcast audio-video playback devices referred to as Media Processing Units (MPU) 208 that, when implemented in a receiver, decode and playback, on one or more displays and speakers, wirelessly broadcast audio video content.
  • the MPU 208 is configured to present International Organization for Standardization (ISO) base media file format (BMFF) data representations 210 and video in high efficiency video coding (HEVC) with audio in, e.g., Dolby audio compression (AC-4) format.
  • ISO BMFF is a general file structure for time-based media files broken into “segments” and presentation metadata. Each of the files is essentially a collection of nested objects each with a type and a length.
  • the MPU 208 may access a broadcast side encrypted media extension (EME)Zcommon encryption (CENC) module 212.
  • EME broadcast side encrypted media extension
  • CENC broadcast side encrypted media extension
  • Figure 2 further illustrates that on the broadcast side the presentation layer 206 may include signaling modules, including either motion pictures expert group (MPEG) media transport protocol (MMTP) signaling module 214 or real-time object delivery over unidirectional transport (ROUTE) signaling module 216 for delivering non-real time (NRT) content 218 that is accessible to the application layer 204.
  • NRT content may include but is not limited to stored replacement advertisements.
  • the presentation layer 206 can include one or more dynamic adaptive streaming over hypertext transfer protocol (HTTP) (DASH) player/decoders 220 for decoding and playing audio-video content from the Internet.
  • DASH dynamic adaptive streaming over hypertext transfer protocol
  • the DASH player 220 may access a broadband side EME/CENC module 222.
  • the DASH content may be provided as DASH segments 224 in ISO/BMFF format.
  • the broadband side of the presentation layer 206 may include NRT content in files 226 and may also include signaling objects 228 for providing play back signaling.
  • the session layer 230 includes, on the broadcast side, either MMTP protocol 232 or ROUTE protocol 234. Note that the ATSC standard provides an option to use MPEG MMT for transport, though it is not shown here.
  • the session layer 230 includes HTTP protocol 236 which may be implemented as HTTP-secure (HTTP(S)).
  • HTTP HTTP-secure
  • the broadcast side of the session layer 230 also may employ a HTTP proxy module 238 and a service list table (SLT) 240.
  • SLT 240 includes a table of signaling information which is used to build a basic service listing and provide bootstrap discovery of the broadcast content.
  • Media presentation descriptions (MPD) are included in the “ROUTE Signaling” tables delivered over user datagram protocol (UDP) by the ROUTE transport protocol.
  • a transport layer 242 is below the session layer 230 in the protocol stack for establishing low-latency and loss-tolerating connections.
  • the transport layer 242 uses (UDP 244 and on the broadband side transmission control protocol (TCP) 246.
  • the example non-limiting protocol stack shown in Figure 2 also includes a network layer 248 below the transport layer 242.
  • the network layer 248 uses Internet protocol (IP) on both sides for IP packet communication, with multicast delivery being typical on the broadcast side and unicast being typical on the broadband side.
  • IP Internet protocol
  • the physical layer 250 which includes broadcast transmission/receive equipment 252 and computer network interface(s) 254 for communicating on the respective physical media associated with the two sides.
  • the physical layer 250 converts Internet Protocol (IP) packets to be suitable to be transported over the relevant medium and may add forward error correction functionality to enable error correction at the receiver as well as contain modulation and demodulation modules to incorporate modulation and demodulation functionalities. This converts bits into symbols for long distance transmission as well as to increase bandwidth efficiency.
  • IP Internet Protocol
  • the physical layer 250 typically includes a wireless broadcast transmitter to broadcast data wirelessly using orthogonal frequency division multiplexing (OFDM) while on the OTT side the physical layer 250 includes computer transmission components to send data over the Internet.
  • OFDM orthogonal frequency division multiplexing
  • DASH-IF DASH Industry Forum
  • HTTP/TCP/IP DASH Industry Forum
  • Media files in the DASH-IF profile based on the ISO BMFF may be used as the delivery, media encapsulation and synchronization format for both broadcast and broadband delivery.
  • Each receiver 14 typically includes a protocol stack that is complementary to that of the broadcaster equipment.
  • a receiver 14 in Figure 1 may include, as shown in Figure 2, an Internet-enabled TV with an ATSC 3.0 TV tuner (equivalently, set top box controlling a TV) 256.
  • the receiver 14 may be an Android®-based system.
  • the receiver 14 alternatively may be implemented by a computerized Internet enabled (“smart”) telephone, a tablet computer, a notebook computer, a wearable computerized device, and so on. Regardless, it is to be understood that the receiver 14 and/or other computers described herein is configured to undertake present principles (e.g. communicate with other devices to undertake present principles, execute the logic described herein, and perform any other functions and/or operations described herein).
  • the receiver 14 can be established by some or all of the components shown in Figure 1.
  • the receiver 14 can include one or more displays 258 that may be implemented by a high definition or ultra-high definition “4K” or higher flat screen and that may or may not be touch-enabled for receiving user input signals via touches on the display.
  • the receiver 14 may also include one or more speakers 260 for outputting audio in accordance with present principles, and at least one additional input device 262 such as, e.g., an audio receiver/microphone for, e.g., entering audible commands to the receiver 14 to control the receiver 14.
  • the example receiver 14 may further include one or more network interfaces 264 for communication over at least one network such as the Internet, a WAN, a LAN, a PAN etc. under control of one or more processors 266.
  • the interface 264 may be, without limitation, a Wi-Fi transceiver, which is an example of a wireless computer network interface, such as but not limited to a mesh network transceiver.
  • the interface 264 may be, without limitation, a Bluetooth® transceiver, Zigbee® transceiver, Infrared Data Association (IrDA) transceiver, Wireless USB transceiver, wired USB, wired LAN, Powerline or Multimedia over Coax Alliance (MoCA).
  • IrDA Infrared Data Association
  • the processor 266 controls the receiver 14 to undertake present principles, including the other elements of the receiver 14 described herein such as, for instance, controlling the display 258 to present images thereon and receiving input therefrom.
  • the network interface 264 may be, e.g., a wired or wireless modem or router, or other appropriate interface such as, e.g., a wireless telephony transceiver, or Wi-Fi transceiver as mentioned above, etc.
  • the receiver 14 may also include one or more input ports 268 such as a high definition multimedia interface (HDMI) port or a USB port to physically connect
  • input ports 268 such as a high definition multimedia interface (HDMI) port or a USB port to physically connect
  • HDMI high definition multimedia interface
  • USB USB port
  • the input port 268 may be connected via wire or wirelessly to a cable or satellite source of audio video content.
  • the source may be a separate or integrated set top box, or a satellite receiver.
  • the source may be a game console or disk player.
  • the receiver 14 may further include one or more computer memories 270 such as disk-based or solid-state storage that are not transitory signals, in some cases embodied in the chassis of the receiver as standalone devices or as a personal video recording device (PVR) or video disk player either internal or external to the chassis of the receiver for playing back audio video (AV) programs or as removable memory media.
  • the receiver 14 can include a position or location receiver 272 such as but not limited to a cellphone receiver, global positioning satellite (GPS) receiver, and/or altimeter that is configured to e.g. receive geographic position information from at least one satellite or cellphone tower and provide the information to the processor 266 and/or determine an altitude at which the receiver 14 is disposed in conjunction with the processor 266.
  • GPS global positioning satellite
  • altimeter that is configured to e.g. receive geographic position information from at least one satellite or cellphone tower and provide the information to the processor 266 and/or determine an altitude at which the receiver 14 is disposed in conjunction with the processor 266.
  • another suitable position receiver other than
  • the receiver 14 may include one or more cameras 274 that may include one or more of a thermal imaging camera, a digital camera such as a webcam, and/or a camera integrated into the receiver 14 and controllable by the processor 266 to gather pictures/images and/or video in accordance with present principles.
  • a Bluetooth® transceiver 276 or other Near Field Communication (NFC) element for communication with other devices using Bluetooth® and/or NFC technology, respectively.
  • NFC element can be a radio frequency identification (RFID) element.
  • the receiver 14 may include one or more auxiliary sensors 278 (such as a motion sensor such as an accelerometer, gyroscope, cyclometer, or a magnetic sensor and combinations thereof), an infrared (IR) sensor for receiving IR commands from a remote control, an optical sensor, a speed and/or cadence sensor, a gesture sensor (for sensing gesture commands) and so on providing input to the processor 266.
  • auxiliary sensors 278 such as a motion sensor such as an accelerometer, gyroscope, cyclometer, or a magnetic sensor and combinations thereof
  • IR infrared
  • An IR sensor 280 may be provided to receive commands from a wireless remote control.
  • a battery (not shown) may be provided for powering the receiver 14.
  • the companion device 16 may incorporate some or all of the elements shown in relation to the receiver 14 described above.
  • the methods described herein may be implemented as software instructions executed by a processor, suitably configured application specific integrated circuits (ASIC) or field programmable gate array (FPGA) modules, or any other convenient manner as would be appreciated by those skilled in those art.
  • ASIC application specific integrated circuits
  • FPGA field programmable gate array
  • the software instructions may be embodied in a non-transitory device such as a CD ROM or Flash drive.
  • the software code instructions may alternatively be embodied in a transitory arrangement such as a radio or optical signal, or via a download over the Internet.
  • a simplified digital TV system such as an ATSC 3.0 system is shown.
  • a mobile or stationary digital TV receiver such as an ATSC 3.0 receiver 300 that may include any or all of the relevant components discussed above in relation to Figures 1 and 2 is located in a boundary region 302 between first and second ATSC 3.0 broadcast stations or assemblies 304, with signals from both broadcast stations 304 being picked up by the receiver 300 in the region 302.
  • a first ATSC 3.0 service (“Service A”) is broadcast from the first broadcast station 304 over a first frequency 306, whereas the same service A is broadcast from the second broadcast station 304 over a second frequency 308 different from the first frequency 306.
  • the receiver 300 picks up both frequencies, i.e., the receiver 300 picks up signals from both broadcast stations 304.
  • Figure 4 illustrates an example non-limiting embodiment of a digital TV receiver such as an ATSC 3.0 receiver 400 that may include any or all of the relevant components discussed above in relation to Figures 1 and 2.
  • the ATSC 3.0 receiver 400 may be a stationary receiver, e.g., a receiver located inside a home.
  • the ATSC 3.0 receiver 400 may be a mobile receiver, e.g., as by being implemented in a mobile phone or being disposed in a moving vehicle.
  • the example ATSC 3.0 receiver 400 shown in Figure 4 includes a tuner 402 sending signals to a demodulator 404 that the tuner picks up from one or more antennae 406.
  • the receiver 400 includes one and only one tuner, one and only one demodulator, and one and only one antenna.
  • Figure 5 illustrates an example non-limiting embodiment of a digital TV receiver such as an ATSC 3.0 receiver 500 that may include any or all of the relevant components discussed above in relation to Figures 1 and 2.
  • the ATSC 3.0 receiver 500 may be a mobile receiver, e.g., as by being implemented in a mobile phone or being disposed in a moving vehicle.
  • the ATSC 3.0 receiver 500 may be a stationary receiver, e.g., a receiver located inside a home.
  • the example ATSC 3.0 receiver 500 shown in Figure 5 includes plural tuners 502 sending signals to respective demodulators 504 picked up by the tuners from one or more antennae 506.
  • the ATSC 3.0 receiver 500 has two tuners and two demodulators, it being understood that the receiver may have a greater or lesser number of tuner/demodulators.
  • the ATSC 3.0 receiver 500 has four antennae, it being understood that the receiver may have a greater or lesser number of antennae.
  • the receiver 500 may have the capability to switch antennae input to the tuners, such that a first tuner may receive signals from, e.g., three antennae and a second tuner may receive signals from the fourth antenna, and then a switch may be made to swap antenna input between the tuners.
  • Two antennae may provide input to each respective tuner. All four antennae may provide input to a single tuner.
  • Figure 6 illustrates example logic for using a single lower level (signaling) physical layer pipe (PLP) to acquire information to optimize frequency tuning in the boundary area 302 in Figure 3, while Figure 7 illustrates a UI consistent with Figure 6.
  • a PLP is a portion of the RF channel which has certain modulation and coding parameters. More specifically, a single ATSC 3.0 broadcast RF channel can contain one or more logical channels, called PLPs, and each PLP can carry one or more audio video services. In addition, a single service can be carried by more than one PLP.
  • a lower level PLP can contain information (lower level signaling or LLS) regarding frequency scans, service identifiers such as broadcast stream identifiers (BSID) and global session identifiers (GSID), and other information. Using the lower level PLP, higher level PLPs carrying AV services and related signaling (such as service layer signaling or SLS) can be identified.
  • BSID broadcast stream identifiers
  • GSID global session identifiers
  • a BSID is tied through a database to a corresponding broadcast frequency on which a service, from the particular broadcaster associated with the BSID, can be received.
  • a first BSID and related information may indicate that a service can be received from a first broadcaster on a first frequency
  • a second BSID and related information may indicate that the same service may be received from a second broadcaster on a second, different frequency than the first frequency.
  • a digital TV receiver such as any of the ATSC 3.0 receivers described herein is used to perform an initial frequency scan to retrieve LLS PLPs.
  • the quality metrics can include, e.g., signal to noise ratio (SNR) and error rate as may be represented by, e.g., packet error number (PEN).
  • SNR signal to noise ratio
  • PEN packet error number
  • the quality metrics can include resolution, e.g., whether a service is in high definition (HD) or standard definition (SD).
  • HD high definition
  • SD standard definition
  • the quality metric also can include bit-rate and form-factor, recognizing that not all HD is the same.
  • the quality metrics can include content attributes such as whether a service supports foreign languages, accessibility signaling (e.g. where signing is being done), audio description, and other content aspects.
  • the quality metrics can include locality preference (such as a first region channel being strong, but all the ads are for the first region and not a second region preferred by the user so that a duplicate service from the second region may be accorded preference over the first region).
  • the quality metrics can include quality of user interfaces carried in the service.
  • SNR may be determined during the scan by noting both the received signal strength of each received frequency and any accompanying noise on that frequency and determining the quotient thereof.
  • Error rate may be determined by, e.g., determining a percentage of packets missed (by noting missing packet numbers) and/or by determining a percentage of received packets with errors in them as determined by error correction algorithms.
  • decision state 604 it is determined, e.g., using service identification information in the LLS PLP, whether any service is duplicatively carried on two or more frequencies from, e.g., two or more broadcasters whose signals overlap on the boundary area shown in Figure 3.
  • the logic may proceed to block 606 to indicate such. Otherwise, if a movable antenna is supported at decision state 608, it may be determined at decision state 610 whether additional antenna movement is available. If so, the antenna is moved at state 612 and the logic loops back to block 600 to execute a re-scan of the frequency spectrum. It is to be understood that if desired, even if the scan reveals duplicate services, the antenna may be moved to do a re-scan to find additional duplicates.
  • the logic moves to state 614 to select the service from among the duplicate services (by selecting servicelD) to the frequency with the best quality metric, e.g., SNR or PEN.
  • the logic moves to state 616 to select the service from among the duplicate services (by selecting servicelD) to the frequency with the best quality metric, e.g., SNR or PEN, also storing the antenna position at which the best frequency was detected.
  • one of the frequencies may be randomly chosen to tune to present the service when demanded by the user.
  • the above logic may be automatically implemented to select a frequency for a duplicatively broadcast service for the user when, e.g., the user attempts to tune to the service on either frequency, or the logic may be used to recommend a frequency to the user to allow the user to manually tune to that frequency for the desired service.
  • Figure 7 illustrates a display 700 such as any of the displays described herein that can be used to present a UI 702 consistent with the logic of Figure 6 responsive to a user, e.g., attempting to tune to a desired duplicatively broadcast service.
  • the UI 702 may include a prompt or message 704 that a particular service (or “show” or “program”) is being received from two (or more) broadcast regions indicated at 706.
  • a selector 708 may be used by the user to select which region (and hence which frequency) to receive the desired service from.
  • each indication 706 may include information about the frequency from that region on which the desired service is carried.
  • This information may include the location of the broadcast station in the region, the resolution (e.g., high definition or standard definition) of the service being received from the region, the PEN of the service being received from the region, the SNR of the service being received from the region, and the direction from the user’s present location as indicated by, e.g., global positioning satellite (GPS) to the broadcast station of the region.
  • GPS global positioning satellite
  • Figures 6 and 7 consider the use of only the LLS PLP to determine quality metrics of boundary area frequencies carrying the same service
  • Figure 8 illustrates alternate logic that uses more than the LLS PLP to obtain a more granular indication of quality metrics.
  • a basic scan of frequencies is executed using the LLS PLP. This scan identifies services being received and, hence, whether any service or services are being duplicatively received in the boundary area from, e.g., two or more broadcasters.
  • LMT link mapping table
  • SLS PLPs higher level PLPs
  • Each higher-level PLP includes a ROUTE signaling structure called a service-based transport session instance description (S-TSID), which is part of the service layer signaling and which indicates properties of channels including a transport session identifier (TSI) value for each channel, descriptors for the delivery objects/files, and application layer forward error correction (FEC) parameters ROUTE sessions for the components delivered in the broadcast stream which delivers S-TSID itself.
  • S-TSID service-based transport session instance description
  • FEC application layer forward error correction
  • the higher level PLPs may be accessed using the same or a different tuner/demodulator than that used to access the lower level PLP. Likewise, the higher level PLPs may be accessed using the same or a different antenna than that used to access the lower level PLP.
  • a tuner/demodulator may turn on all the PLPs needed when rendering the service in its entirety.
  • a second tuner/demodulator may completely receive the service, knowing it is duplicative, whilst allowing the primary to continue with its scanning in parallel. This would speed up the process.
  • the secondary tuner may need to queue up the duplicate frequencies as the primary tuner finds them.
  • the secondary tuner may activate all PLPs, including the LLS PLP, to receive and measure the complete service.
  • the best frequency is selected, either automatically or by the user using, e.g., a UI similar to that shown in Figure 7, to receive the service, typically upon demand for the service by the user.
  • FIGs 9 and 10 illustrate yet another technique for identifying duplicatively received services on differing frequencies and providing the best frequency for a duplicate service to the user.
  • a receiver such as the ATSC 3.0 receiver 500 shown in Figure 5 uses one of its plural tuner/demodulators to receive a desired service (and play the service).
  • This tuner/demodulator may be considered to be a primary tuner/demodulator and may receive input from, e.g., three of four of the antennae shown in Figure 5.
  • the receiver may also use another one of its tuner/demodulators, which may be considered a secondary tuner/demodulator, to scan for duplicate services at block 902.
  • the secondary tuner/demodulator may use only a single antenna. It is to be understood that the primary may use fewer than three antennae as input and the secondary may use more than one antenna as input. Note that the scan for duplicate services at block 902 may employ, for instance, the technique of Figure 7 or the technique of Figure 8 or other suitable technique.
  • Step 904 using information from the scan at block 902 one or more quality metrics (SNR, PEN, or other desired metric) of the frequency on which the service is being received by the primary tuner/demodulator as well as the quality metrics of the frequency on which the service is duplicatively detected using the secondary tuner/demodulator are determined.
  • Decision state 906 indicates that the primary and secondary metrics are compared to determine whether the difference between them satisfies a threshold. If not, the logic may loop back to block 900, but when the difference satisfies the threshold (i.e., the frequency from the secondary tuner/demodulator may be considered to be significantly better in terms of quality than the primary), the logic moves to block 908.
  • the threshold i.e., the frequency from the secondary tuner/demodulator may be considered to be significantly better in terms of quality than the primary
  • the secondary tuner/demodulator automatically may be used to deliver the demanded service for presentation of the service, with the primary tuner/demodulator being switched use to scan for duplicate services.
  • a re-scan and re-tune of available frequencies may be automatically executed by the primary and/or secondary tuner/ demodulator.
  • Figure 10 illustrates an example display 1000 such as any of the displays described herein presenting an example UI 1002 with a message or prompt 1004 that the demanded service is available on another, better frequency.
  • the user may select a selector 1006 to tune to the better frequency (i.e., the frequency detected by the secondary tuner/demodulator).
  • the user may select a selector 1000 to execute an automatic re-scan of the spectrum and re-tuning to the best frequency carrying the demanded service. Further information for each frequency carrying the demanded service such as the information illustrated in Figure 7 may be used in the UI 1002 of Figure 10.
  • the UIs may be perceived by a person visually and/or audibly (e.g., played on speakers), and/or tactilely, e.g., by activating a haptic generator system to generate tactile signals representing the elements of the UIs described herein. It will be appreciated that whilst present principals have been described with reference to some example embodiments, these are not intended to be limiting, and that various alternative arrangements may be used to implement the subject matter claimed herein.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

L'invention concerne des techniques destinées à étendre et/ou à améliorer le protocole de télévision ATSC (Comité des systèmes de télévision avancés) 3.0, par la fourniture robuste des services de diffusion télévisée de nouvelle génération. Dans une région limite (302) entre des première et seconde stations de diffusion dans lesquelles un récepteur (300) peut capter des signaux provenant des deux stations (304), un PLP de signalisation de niveau inférieur est utilisé (810) pour identifier une métrique de qualité de canal pour identifier la meilleure fréquence pour recevoir un service de diffusion sur lequel la transmission s'effectue depuis les deux stations.
PCT/IB2022/057275 2021-08-06 2022-08-04 Techniques de gestion de zone limite de diffusion atsc 3.0 à l'aide d'erreurs de qualité de signal et de paquets pour différencier des services dupliqués sur différentes fréquences pendant le balayage WO2023012727A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US202163260013P 2021-08-06 2021-08-06
US63/260,013 2021-08-06
US17/487,753 US11848716B2 (en) 2021-08-06 2021-09-28 Techniques for ATSC 3.0 broadcast boundary area management using signal quality and packet errors to differentiate between duplicated services on different frequencies during scan
US17/487,753 2021-09-28

Publications (1)

Publication Number Publication Date
WO2023012727A1 true WO2023012727A1 (fr) 2023-02-09

Family

ID=83192105

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2022/057275 WO2023012727A1 (fr) 2021-08-06 2022-08-04 Techniques de gestion de zone limite de diffusion atsc 3.0 à l'aide d'erreurs de qualité de signal et de paquets pour différencier des services dupliqués sur différentes fréquences pendant le balayage

Country Status (1)

Country Link
WO (1) WO2023012727A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170318353A1 (en) * 2016-05-02 2017-11-02 Echostar Technologies L.L.C. Indoor over the air antenna systems
US20180048854A1 (en) * 2015-03-02 2018-02-15 Lg Electronics Inc. Apparatus for transmitting broadcast signal, apparatus for receiving broadcast signal, method for transmitting broadcast signal, and method for receiving broadcast signal
EP3340636A1 (fr) * 2015-08-20 2018-06-27 LG Electronics Inc. Appareil de transmission de signal de radiodiffusion, appareil de réception de signal de radiodiffusion, procédé de transmission de signal de radiodiffusion, et procédé de réception de signal de radiodiffusion

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180048854A1 (en) * 2015-03-02 2018-02-15 Lg Electronics Inc. Apparatus for transmitting broadcast signal, apparatus for receiving broadcast signal, method for transmitting broadcast signal, and method for receiving broadcast signal
EP3340636A1 (fr) * 2015-08-20 2018-06-27 LG Electronics Inc. Appareil de transmission de signal de radiodiffusion, appareil de réception de signal de radiodiffusion, procédé de transmission de signal de radiodiffusion, et procédé de réception de signal de radiodiffusion
US20170318353A1 (en) * 2016-05-02 2017-11-02 Echostar Technologies L.L.C. Indoor over the air antenna systems

Similar Documents

Publication Publication Date Title
US11611799B2 (en) ATSC 3 application context switching and sharing
US11729456B2 (en) Long duration error correction with fast channel change for ATSC 3.0 real-time broadcast mobile application
US11825155B2 (en) ATSC boundary condition fall over to internet
US11553245B1 (en) Techniques for receiving non-real time (NRT) data whilst traversing a multi-frequency network boundary
US11848716B2 (en) Techniques for ATSC 3.0 broadcast boundary area management using signal quality and packet errors to differentiate between duplicated services on different frequencies during scan
US11838680B2 (en) Techniques for ATSC 3.0 broadcast boundary area management using complete service reception during scan to determine signal quality of frequencies carrying the duplicate service
US11190835B2 (en) Intelligent unload of broadcaster application on channel change
US11601707B2 (en) Techniques for ATSC 3.0 broadcast boundary area management using plural tuners
US11546650B1 (en) Techniques for ATSC 3.0 broadcast boundary area management using plural tuners with different numbers of antennae
US11711568B2 (en) Techniques for ATSC 3.0 broadcast boundary area management using plural tuners handing off between presentation and scanning
WO2023012727A1 (fr) Techniques de gestion de zone limite de diffusion atsc 3.0 à l'aide d'erreurs de qualité de signal et de paquets pour différencier des services dupliqués sur différentes fréquences pendant le balayage
WO2023012732A1 (fr) Techniques de gestion de zone limite de diffusion atsc 3.0 utilisant une réception de service complète pendant le balayage pour déterminer la qualité de signal de fréquences porteuses du service en double
WO2023012746A1 (fr) Techniques de gestion de région limite de diffusion de l'atsc 3.0 utilisant plusieurs tuners
US11611792B2 (en) ATSC 3 reception across boundary conditions using location data
US20240107111A1 (en) Digital tv reception using ott backchannel communication
WO2023012756A1 (fr) Techniques de gestion de zone limite de diffusion atsc 3.0 faisant appel à plusieurs syntoniseurs effectuant un transfert entre présentation et balayage
WO2023012747A1 (fr) Techniques de gestion de zone limite de diffusion atsc 3,0 utilisant plusieurs syntoniseurs avec différents nombres d'antennes
US11611790B2 (en) RF channel description for multiple frequency networks
WO2023012748A1 (fr) Techniques de réception de données en temps non réel (nrt) tout en traversant une frontière de réseau multifréquence
US11825131B2 (en) Using ATSC 3.0 to augment in-stadium video feeds
WO2023012749A1 (fr) Commutation et partage de contexte d'application atsc 3
US11812083B2 (en) Techniques for pushing personalized storefront ads using digital TV
WO2023012750A1 (fr) Amélioration de la réception atsc 3 dans des conditions limites à l'aide de données de localisation
US20210250573A1 (en) Digital television rendering verification
CN116868524A (zh) 使用位置数据改善跨边界条件的atsc 3接收

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22764849

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE