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.
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” or OTA) and related broadband delivered content and services (referred to as “over the top” or OTT). 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.
One hundred eighty/three hundred sixty-degree)(180°/360°) field of view, 4K or 8K or higher resolution video can be panned on a PC, tablet or smart phone using a mouse or touchscreen. Using goggles, the video can be panned with a hand controller or head motion. VR goggles can sense the natural turning or tilting of the head in order to pan the image shown within the googles to make the wearer feel present at the location as if being “teleported”.
As envisioned herein, 180/360 video can be monoscopic or stereoscopic. A flat display as used herein may present monoscopic or stereoscopic video, with stereoscopic video being used to render 3D video and monoscopic video typically being considered to be 2D video. “Flat display” or “flat video” as used herein means a video in which the entire image that is processed is limited to a display, typically with an aspect ratio of 16×9, at whatever the received resolution is, with no ability to pan. Thus, “flat” video may be considered to be the “main view” video of a 180/360 video. It might be where the director or content creator wants to focus the user's attention. The “surround video” is not shown. The “flat video” plus the “surround video” make up the entirely of a 180/360 video.
Examples can include providing, along with a normal flat feed, a 180°/360° surround feed of live news events. Live news events such as at a location of an accident, tornado, demonstration, political rally, etc. can be shown as a 360° feed for 180°/360° spherical representation on the goggles. And it is not just live news events, but live “human interest” stories where people and organizations are showcased. A 360° feed can provide the viewer a better idea as to they are about because they are able to “look around” and see things that a flat feed cannot show. As people without goggles watch the normal flat video on a TV, people with goggles can pan around the entire scene by means of panning the 180°/360° surround feed. For TVs that support the display of 180°/360° video, panning may be accomplished using the remote control by pressing the up, down, left, and right buttons on the remote control. The video can be monoscopic or stereoscopic. Stereoscopic video can deliver separate images to each eye, and this called “3D” video. 3D video can be supported with 180°/360° video, but not all 180°/360° video is 3D. Present principles also apply to travel tourist content and to any show or content filmed in 180°/360° VR such as concerts, motor bike racing, snowboarding, or hiking. Many VR videos are filmed monoscopically, e.g., delivering the same content to each eye, and often with the focus set to infinity which minimizes the nausea that users experienced with 3D. Monoscopic video can deliver a very satisfactory experience of “being there” and telepresence.
Accordingly, a digital television apparatus includes at least one receiver with at least one processor programmed with instructions to configure the processor to present a flat video of an event on a main display and present a one hundred eighty or three hundred sixty-degree (180° or) 360° video of the event on a virtual reality (VR) headset.
In another aspect, in digital television in which at least one receiver can receive broadcast signals, a method includes receiving at least a first broadcast video signal. The method also includes presenting content in the first broadcast video signal on at least one normal flat display and presenting 180°/360° video of the content on at least one display. The method includes, responsive to at least one command, panning the 180°/360° video on the at least one display.
In some embodiments the at least one display includes a virtual reality (VR) headset.
In some embodiments the at least one display includes the flat display.
In some implementations the 180°/360° video is received in the first broadcast video stream, the first broadcast stream includes no other video of the content, and the panning includes panning video on the flat display.
In other embodiments the 180°/360° video is received in the first broadcast video stream, the first broadcast stream includes no other video of the content, and the 180°/360° video is presented as flat video on the flat display as a backwardly compatible content view.
In some implementations the 180°/360° video is received in the first broadcast video stream and content therein is presented on the flat display, and the method includes sending the content from the flat display to the VR headset. In other implementations the 180°/360° video is received in the first broadcast video stream and content therein is presented on the flat display, and the method includes sending the content to the VR headset without passing through the flat display.
The 180°/360° video may be received in the first broadcast video stream along with a flat feed of content in the 180°/360° video. Or, the 180°/360° video may be received from an over-the-top (OTT) source.
In another aspect, an apparatus includes at least one receiver assembly configured to receive at least a first broadcast video signal and present content in the first broadcast video signal on at least one flat display. The receiver assembly also is configured to present 180°/360° video of the content on at least one display. Responsive to at least one command, the assembly is configured to pan the 180°/360° video on the at least one display.
The details of the present application, both as to its structure and operation, can best be understood in reference to the accompanying drawings, in which like reference numerals refer to like parts, and in which:
This disclosure relates to technical advances in digital television such as in Advanced Television Systems Committee (ATSC) 3.0 television. 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. These client devices may operate with a variety of operating environments. For example, 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 program that can access websites hosted by the Internet servers discussed below.
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.
Information may be exchanged over a network between the clients and servers. To this end and for security, servers and/or clients can include firewalls, load balancers, temporary storages, and proxies, and other network infrastructure for reliability and security.
As used herein, 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.
Present principles described herein can be implemented as hardware, software, firmware, or combinations thereof; hence, illustrative components, blocks, modules, circuits, and steps are set forth in terms of their functionality.
Further to what has been alluded to above, 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. A processor can be implemented by a controller or state machine or a combination of computing devices.
The functions and methods described below, when implemented in software, can be written in an appropriate language such as but not limited to hypertext markup language (HTML)-5, Java/Javascript, C# or C++, and can be stored on or transmitted through a computer-readable storage medium such as a random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), compact disk read-only memory (CD-ROM) or other optical disk storage such as digital versatile disc (DVD), magnetic disk storage or other magnetic storage devices including removable universal serial bus (USB) thumb drives, etc. 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.
Components included in one embodiment can be used in other embodiments in any appropriate combination. For example, any of the various components described herein and/or depicted in the Figures may be combined, interchanged, or excluded from other embodiments.
A recitation of “having at least one of A, B, and C” (likewise “having at least one of A, B, or C” and “having at least one of A, B, C”) includes 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.
Present principles may employ various machine learning models, including deep learning models. Machine learning models consistent with present principles may use various algorithms trained in ways that include supervised learning, unsupervised learning, semi-supervised learning, reinforcement learning, feature learning, self-learning, and other forms of learning. Examples of such algorithms, which can be implemented by computer circuitry, include one or more neural networks, such as a convolutional neural network (CNN), a recurrent neural network (RNN), and a type of RNN known as a long short-term memory (LSTM) network. Support vector machines (SVM) and Bayesian networks also may be considered to be examples of machine learning models.
As understood herein, performing machine learning may therefore involve accessing and then training a model on training data to enable the model to process further data to make inferences. An artificial neural network/artificial intelligence model trained through machine learning may thus include an input layer, an output layer, and multiple hidden layers in between that that are configured and weighted to make inferences about an appropriate output.
Turning to
Also, 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. In any case, 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). Note that computerized devices described in all of the figures herein may include some or all of the components set forth for various devices in
Referring now to
Disclosing
Below the application layer 204 is a presentation layer 206. 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. To facilitate decryption, the MPU 208 may access a broadcast side encrypted media extension (EME)/common encryption (CENC) module 212.
On the broadband (OTT or computer network) side, when implemented by a receiver 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. To this end 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. To support various embodiments of the present invention, DASH segments encode various media content components types such as audio, video, or text. It is anticipated that there could be more than one video type—one encompassing the legacy main view—and new video type encompassing the surround video. Legacy players/decoders decode the legacy main view based legacy video type, while enhanced players pan and decode the additional video type that includes the surround video.
As was the case for the broadcast side, 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.
Below the presentation layer 206 in the protocol stack is a session layer 230. 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.
On the broadband side the session layer 230 includes HTTP protocol 236 which may be implemented as HTTP-secure (HTTP(S)). The broadcast side of the session layer 230 also may employ a HTTP proxy module 238 and a service list table (SLT) 240. The 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. On the broadcast side 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
Below the network layer 248 is 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. On the OTA side 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.
A DASH Industry Forum (DASH-IF) profile sent through the various protocols (HTTP/TCP/IP) in the protocol stack may be used on the broadband side. 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
Accordingly, to undertake such principles the receiver 14 can be established by some or all of the components shown in
In addition to the foregoing, 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 (using a wired connection) to another CE device and/or a headphone port to connect headphones to the receiver 14 for presentation of audio from the receiver 14 to a user through the headphones. For example, the input port 268 may be connected via wire or wirelessly to a cable or satellite source of audio video content. Thus, the source may be a separate or integrated set top box, or a satellite receiver. Or, 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. Also, in some embodiments, 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. However, it is to be understood that that another suitable position receiver other than a cellphone receiver, GPS receiver and/or altimeter may be used in accordance with present principles to determine the location of the receiver 14 in e.g., all three dimensions.
Continuing the description of the receiver 14, in some embodiments 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. Also included on the receiver 14 may be a Bluetooth® transceiver 276 or other Near Field Communication (NFC) element for communication with other devices using Bluetooth® and/or NFC technology, respectively. An example NFC element can be a radio frequency identification (RFID) element.
Further still, 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 or inertial measurement unit (IMU) 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. 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. Where employed, 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.
Refer now to
In another embodiment the flat camera 302 may be omitted from
Moving to block 604, the (180°/360°) 4K or 8K or higher video stream is received OTA or OTT as described above and any pan signals received at block 606. The (180°/360°) 4K or 8K or higher 180°/360° video may be presented at block 308 on the VR headset 506 shown in
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.
Number | Date | Country | |
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63260023 | Aug 2021 | US |