WO2002060178A1 - Synchronisation de multiples signaux reçus par l'intermediaire de differents supports de transmission - Google Patents

Synchronisation de multiples signaux reçus par l'intermediaire de differents supports de transmission Download PDF

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Publication number
WO2002060178A1
WO2002060178A1 PCT/US2001/026196 US0126196W WO02060178A1 WO 2002060178 A1 WO2002060178 A1 WO 2002060178A1 US 0126196 W US0126196 W US 0126196W WO 02060178 A1 WO02060178 A1 WO 02060178A1
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WO
WIPO (PCT)
Prior art keywords
signal
buffering
storage device
television
signals
Prior art date
Application number
PCT/US2001/026196
Other languages
English (en)
Inventor
James Billmaier
Brittany Billmaier
Original Assignee
Digeo, Inc.
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 US09/768,019 external-priority patent/US6630963B1/en
Application filed by Digeo, Inc. filed Critical Digeo, Inc.
Publication of WO2002060178A1 publication Critical patent/WO2002060178A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/18—Arrangements for synchronising broadcast or distribution via plural systems
    • 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
    • H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
    • H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
    • H04N21/43072—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen of multiple content streams on the same device
    • 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
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/4147—PVR [Personal Video Recorder]
    • 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
    • H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H04N21/4333—Processing operations in response to a pause request
    • 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
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4622—Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet

Definitions

  • the present invention relates generally to interactive television systems. More specifically, the present invention relates to a method and system for synchronizing multiple signals received through different transmission mediums, such as, for example, a cable television signal and a radio signal transmitted via the Internet.
  • Each transmission medium has a particular bandwidth, i.e. the amount of data that can be transmitted in a fixed amount of time.
  • One transmission medium such as a cable network, might have a relatively high bandwidth, e.g. 10 megabits per second (Mbps), while another medium, such as a DSL or analog telephone line, might have a lower bandwidth, e.g., 256 or 56 kilobits per second (Kbps), respectively.
  • Mbps megabits per second
  • Kbps 56 kilobits per second
  • certain transmission mediums might be better suited to video distribution (which requires a higher bandwidth) while other transmission mediums might be better suited to audio or data distribution (which typically requires a lower bandwidth).
  • Each transmission medium is also associated with a particular latency, i.e. the time it takes for information to travel from a source computer to a destination computer.
  • a particular latency i.e. the time it takes for information to travel from a source computer to a destination computer.
  • the latency is relatively low.
  • the latency can be as high as several seconds.
  • Differences in latency between two transmission mediums can cause two signals transmitted simultaneously via the different mediums to arrive at different times. Where the delay in receiving the second signal is greater than a few seconds, directly combining the two signals may be undesirable due to the lack of synchronization.
  • both radio and television stations traditionally provide coverage for sporting events, such as football, basketball, baseball, etc.
  • multiple radio and television stations typically cover an event for both local and national audiences.
  • radio announcers often provide a better commentary since they must rely on words alone to describe the event.
  • radio broadcasts typically include fewer commercials, interviews, human interest stories, or the like, which tend to interrupt the event.
  • Radio signals are digitized, packetized, and transmitted to a receiver's computer using standard protocols such as TCP/IP (transmission control protocol/Internet protocol).
  • TCP/IP transmission control protocol/Internet protocol
  • Various standard software programs are available for receiving and playing radio signals transmitted via the Internet, such as RealPlayer Plus ® , available from RealNetworks, Inc. of Seattle, WA.
  • Internet-based radio transmissions are not geographically limited.
  • a local radio station in New York City may be received via the Internet at a user's home in Seattle or anywhere else in the world. It is now possible to choose from radio broadcasts from thousands of radio stations around the world via the Internet medium.
  • the process including digitizing the radio signal, establishing a communication channel, and transmitting the radio signal via the Internet introduces a delay of several seconds when compared to a television signal transmitted, for example, via a cable network.
  • an Internet radio signal may be delayed with respect to a television broadcast for contractual reasons.
  • the Internet-based radio coverage of a sporting event is delayed in time with respect to the television coverage, making a direct combination of the two undesirable due to lack of synchronization between the two signals.
  • FIG. 1 is a block diagram of a system for distributing television programs and other forms of content
  • FIG. 2 is a block diagram of an interactive television system
  • FIG. 3 is a block diagram of physical components of a set top box
  • FIG. 4 illustrates the simultaneous capturing of two signals for transmission via different mediums
  • FIG. 5 is a block diagram of logical components of a system for synchronizing multiple signals received via different transmission mediums
  • FIG. 6 is a time graph illustrating synchronization of a primary signal with a secondary signal received after a delay period
  • FIG. 7 is a user interface for manually synchronizing a two signals received by an interactive-television system
  • FIG. 8 is an illustration of synchronization packets within a secondary signal
  • FIG. 9 is a time graph illustrating synchronization of a primary signal with synchronization packets.
  • FIG. 10 is a flowchart of a method for synchronizing multiple signals received via different transmission mediums.
  • the present invention solves the above-described problems and difficulties by providing a method and system for synchronizing multiple signals received through different transmission mediums.
  • a method and system are described for synchronizing a video program transmitted via a cable network with a secondary audio program, such as a radio program, received via the Internet.
  • a method and system are described for synchronizing a video program transmitted via a cable network with one or more programmed events (for example, directives to perform particular functions, such as displaying text or graphics or animation, playing streaming media, directing a browser to a particular web page, and the like).
  • the system 100 includes a broadband cable network 101.
  • other networks are contemplated, one particular example of which is a satellite network.
  • the system 100 includes a plurality of set top boxes (STBs) 102 located, for instance, at customer homes.
  • STB 102 is a consumer electronics device that serves as a gateway between a customer's television and the network 101.
  • an STB 102 may be embodied more generally as a personal computer, an advanced television set, or another type of client terminal.
  • An STB 102 receives encoded television signals and other information from the network 101 and decodes the same for display on a coupled television 104 or other display device (such as a computer monitor, flat panel display, or the like). As its name implies, an STB 102 is typically located on top of, or in close proximity to, the television 104.
  • Each STB 102 may be distinguished from other network components by a unique identifier, number, code, or address, examples of which include an IP (Internet Protocol) address or media access control (MAC) address.
  • IP Internet Protocol
  • MAC media access control
  • video streams and other information may be transmitted from the network 101 to a specific STB 102 by specifying the corresponding address, after which the network 101 routes the transmission to its destination using conventional techniques.
  • a remote control 106 is provided, in one embodiment, for convenient remote operation of the STB 102 and the television 104.
  • the remote control 106 may use infrared (IR), radio frequency (RF), or other wireless technologies to transmit control signals to the STB 102 and the television 104.
  • Other remote control devices are also contemplated, such as wired or wireless keyboards (not shown).
  • each STB 102 is coupled to the network 101 via a head-end 108 or other distribution center.
  • a head-end 108 is generally a centrally-located facility where television programs are received from a local cable TV (CATV) satellite downlink or other source and packaged together for transmission to customer homes.
  • CATV local cable TV
  • a head-end 108 also functions as a Central Office (CO) in the telephone industry, routing video streams and other data to and from the various STB 102 devices serviced thereby.
  • CO Central Office
  • the network 101 is preferably coupled to one or more primary content sources 110.
  • a primary content source 110 may be embodied as a television station, a radio station, a data feed, a streaming audio/video server or other type of information source that provides content for distribution to the STBs 102.
  • the network 101 may be coupled to one or more secondary content sources 112.
  • a secondary content source 112 may be a embodied as a television station, a radio station, a data feed, a streaming audio/video server, a web server, or other similar information source.
  • a content source 110 is designated as "primary” because it is coupled to the STBs 102 via a transmission medium having a relatively low latency, while a “secondary” content source 112 is coupled to the STBs 102 via a transmission medium having a relatively higher latency.
  • a signal sent from a primary content source 110 is likely to arrive at an STB 102 before a signal sent from a secondary content source 112.
  • a signal sent by the primary content source 110 is referred to herein as a "primary” signal
  • a signal sent by a content source 112 is referred to herein as a "secondary" signal.
  • primary and secondary only refers to the order in which the signal is received, and does not refer, for instance, to the relative importance of the signals or the amount of bandwidth consumed by the signals.
  • the invention is not limited to two signals. As explained below, it may be desirable to combine three or more signals received through different transmission mediums.
  • each primary content source 110 is coupled to the STBs 102 via a broadband cable network 101, which has a relatively low latency.
  • Each secondary content source 112 is coupled to the STBs 102 via the Internet 114 (which typically has a higher latency) as well the network 101.
  • the Internet 114 is a "network of networks" and is well known to those skilled in the art. Communication over the Internet 114 is accomplished using standard protocols, such as TCP/IP (transmission control protocol/Internet protocol) and the like.
  • TCP/IP transmission control protocol/Internet protocol
  • the invention is not limited to the Internet 114 or the cable network 101 as transmission mediums.
  • satellite networks, digital telephone networks, and the like may be used. Referring now to FIG.
  • the system 200 may include an STB 102, a television 104 (or other display device), and a remote control 106.
  • the STB 102 is used to access the network 101 via a head-end 108.
  • the functionality of the STB 102 is integrated into an advanced version of the television 104.
  • control signals are transmitted from a wireless transmitter 202 in the remote control 106 to a wireless receiver 204 in the STB 102 (and television 104).
  • the remote control 106 includes a plurality of buttons or similar controls.
  • the remote control 106 may include a power button 206, an up arrow button 208, a down arrow button 210, a left arrow button 212, a right arrow button 214, a "Select” button 216, an "OK” button 218, channel buttons 220, volume buttons 222, and alphanumeric buttons 224.
  • the STB 102 includes a wireless receiver 204 for receiving control signals sent by the wireless transmitter 202 in the remote control 106.
  • the receiver 204 may be configured to receive IR, microwave, VHF, UHF, or other electromagnetic frequencies.
  • the STB 102 also includes, in one implementation, a network interface 302 for communicating with the network 101 via the head-end 108.
  • the interface 302 may include conventional tuning circuitry for receiving MPEG (Moving Picture Experts Group) packets for a selected television channel.
  • the interface 302 may also include conventional cable modem circuitry for sending or receiving other types of data.
  • the interface 302 may conform to the DOCSIS (Data Over Cable Service Interface Specification) or DAVIC (Digital Audio-Visual Council) standards.
  • one or more frequency bands may be reserved for upstream transmission.
  • Digital modulation for example, quadrature amplitude modulation or vestigial sideband modulation
  • upstream transmission is accomplished differently for different networks 101.
  • Alternative ways to accomplish upstream transmission include using a back channel transmission, which is typically sent via an analog telephone line, ISDN, DSL, or other techniques.
  • the STB 102 also includes a decoder 304, such as an MPEG decoder, for decoding packets received from the network 101.
  • a decoder 304 such as an MPEG decoder, for decoding packets received from the network 101.
  • the decoder 304 may be implemented as a hardware component. Alternatively, or in addition, software decoding may be used.
  • the STB 102 further includes a memory device 306, such as a random access memory (RAM), configured to store data for temporary use.
  • a memory device 306 such as a random access memory (RAM), configured to store data for temporary use.
  • a read-only memory (ROM) may be provided for storing more permanent data, such as fixed code and configuration information.
  • an audio/video controller 308 is provided for converting decoded digital audio/video information into analog signals for display/playback on the television 104 or attached stereo system (not shown).
  • the audio/video (A/V) controller 308 may provide a direct, digital video output for televisions 104 or stereo systems equipped to receive the same.
  • the A/V controller 308 includes graphics hardware for performing bit-block transfers (bit-blits) and other graphical operations.
  • the STB 102 may include a storage device 310, such as a hard disk drive or the like.
  • the storage device 310 may be configured to record encoded television broadcasts and retrieve the broadcasts at a later time for decoding by the decoder 304 and display by the A/V controller 308.
  • the storage device 310 may also be used in various embodiments to store viewer preferences, parental lock settings, electronic programming guide (EPG) data, programming preferences, passwords, e-mail messages, information requests, and the like.
  • the storage device 310 also stores an operating system (OS) for the STB 102, such as Windows CE ® or Linux ® .
  • OS operating system
  • a CPU 312 controls the operation of the STB 102, including the other components thereof, which are coupled to the CPU 312 via a bus 314.
  • the CPU 312 may be embodied as a microprocessor, a microcontroller, a digital signal processor (DSP) or other device known in the art. As noted above, the CPU 312 may perform these and other operations based upon control signals generated by the remote control 106 and transmitted to the receiver 204.
  • DSP digital signal processor
  • FIG. 3 illustrates only one possible configuration of an STB 102.
  • FIG. 3 illustrates only one possible configuration of an STB 102.
  • Those skilled in the art will recognize that various other architectures and components may be provided within the scope of the invention.
  • various standard components of typical STB 102 are not illustrated in order to avoid obscuring aspects of the invention.
  • a primary content source 110 generates a primary signal 402, while a secondary content source 112 generates a secondary signal 404.
  • both of the signals 402, 404 relate to the same event, e.g., simultaneous radio and television coverage of a sporting event, although this is not a requirement.
  • a signal 402 transmitted via the cable network 101 will reach the STB 102 before a signal 404 sent through both the Internet 114 and the network 101.
  • the invention is not limited to the Internet 114 and the cable network 101.
  • Other embodiments may be provided that include, for example, a satellite network or digital telephone network.
  • the invention should be construed as being limited to configuration illustrated in FIG. 4.
  • FIG. 5 is a block diagram of various logical components of a system
  • the depicted logical components may be implemented using one or more of the physical components shown in FIG. 3. Additionally, or in the alternative, various logical components may be implemented as software modules stored in the memory 306 and/or storage device 310 and executed by the CPU 312.
  • a primary signal interception component 502 intercepts a primary signal 402 as it is received from the headend 108.
  • the primary signal interception component 502 may utilize, for example, the network interface 302 of FIG. 3 to receive the primary signal 402 from the head-end 108.
  • the primary signal 402 may include encoded television signals, streaming audio, streaming video, flash animation, graphics, text, or other forms of content.
  • a secondary signal interception component 508 intercepts the secondary signal 404 as it is received from the head-end 108.
  • the secondary signal 404 may include encoded television signals, streaming audio, streaming video, flash animation, graphics, text, or other forms of content.
  • the signal interception components 502, 508 are logical sub-components components of a single physical component or software program.
  • the secondary signal 404 may be delayed by several seconds with respect to the primary signal 402. Thus, if the secondary signal 404 were simply mixed with the unsynchronized primary signal 402, the results would be undesirable because the two are not synchronized.
  • a synchronization component 512 is provided to synchronize the primary signal 402 with the secondary signal 404.
  • the synchronization component 512 may include or make use of a buffering component 514 to buffer the primary signal 402 for a period of time approximately equal to the relative transmission delay between the two signals 402, 404.
  • the buffering period may be pre-selected, user- adjustable, and/or calculated.
  • the buffering component 514 includes or makes use of the storage device 310 or the memory 306 of FIG. 3 to buffer the primary signal 402.
  • the buffering component 514 may be embodied as a personal video recorder (PVR) device, one particular example of which is TiVo ® , available from TiVo, Inc.
  • PVR personal video recorder
  • a PVR typically includes a hard disk drive, an MPEG encoder/decoder, and various other hardware and software components to facilitate recording and playback of television programs.
  • the hard disk drive typically has a capacity of 20-40 GB in order to facilitate recording of several hours of television programs.
  • a PVR such as TiVo
  • a PVR often includes a feature for "pausing" television broadcasts. For example, when a pause button or the like is pressed, the displayed television program freezes while the PVR records the portion of the broadcast not displayed. When the pause button is pressed again, the PVR resumes the television program (using the recorded data) while simultaneously continuing to record the television program being currently broadcast.
  • the pause feature may be activated for a period of the transmission delay.
  • buffering components 514 may be used, one example of which is the memory 306 of the STB 102.
  • RAM random access memory
  • the last signal to be received may be designated as the "secondary" signal 404.
  • Each of the earlier-received signals may then be designated, in turn, as a "primary" signal 402 and individually synchronized with the secondary signal 404 according to a different relative transmission delay, if necessary.
  • a mixing component 516 mixes the synchronized primary signal 402 with the secondary signal 404 prior to presentation. How the signals 402, 404 are mixed depends on the types of signals 402, 404.
  • the mixing process may involve replacing the audio signal from the television broadcast with the radio signal.
  • the mixing may be performed by the CPU 312 or by specialized audio hardware known in the art.
  • FIG. 6 is a time graph illustrating the above-described synchronization process.
  • a primary signal 402 such as a television signal
  • a secondary signal 404 such as an radio signal received via the Internet 114, arrives four (4) seconds later due to an relative transmission delay 602.
  • Section (II) shows the primary signal 402 after the buffering component 514 buffers the primary signal 402 for a buffering period 604 of four (4) seconds and the mixing component 516 mixes primary signal 402 with the secondary signal 404.
  • the buffering period 604 may be pre-selected, user-adjustable, and/or calculated.
  • a typical relative delay 602 resulting from transmission over the Internet 114 may range between two and five seconds, more often between three and four seconds.
  • a default buffering period 604 may be set to between three seconds and four seconds.
  • an actual relative transmission delay 602 may deviate from the default value.
  • the buffering period 604 may require adjustment by the user.
  • the primary signal 402 is buffered for a default buffering period 604, e.g., three or four seconds. Thereafter, the synchronized primary signal 402 and secondary signal 404 may be mixed and presented to the user.
  • the user is provided with a mechanism for adjusting the buffering period 604 in order to manually synchronize the primary signal 402 with the secondary signal 404.
  • the 512 may provide a user interface in which the synchronized primary signal 402 and secondary signal 404 are displayed with an indication of the buffering period 604. If the current buffering period 604 is greater or less than the transmission delay 602, the user may adjust the buffering period 604, for example, by pressing the up or down buttons 208, 210 on the remote control 106. Preferably, after each adjustment, the primary signal 402 is re-synchronized with the secondary signal 404 according to the new buffering period 604, allowing the user to fine tune the synchronization of the two signals 402, 404.
  • the relative transmission delay 602 is calculated using synchronization packets 802 included with the secondary signal 404.
  • Each synchronization packet 802 may include a time index, which indicates a time at which the corresponding portion of the secondary signal 404 was sent. Accordingly, the relative transmission delay 602 may be calculated by comparing a time index from a synchronization packet 802 with an indication of the time at which the synchronization packet 802 is received by the secondary signal interception component 508.
  • a synchronization packet 802 may include a time index of 9:00:00, indicating that the corresponding portion of the secondary signal 404 was sent at precisely 9:00 AM.
  • the synchronization module 512 may determine the relative transmission delay 602 to be approximately four seconds.
  • Synchronization packets 802 may be inserted into the secondary signal 404 at any suitable frequency in order to permit rapid determination of the relative transmission delay 602. While the above description uses an index with precision to one second for purposes of illustration, the present invention contemplates using an indices or timestamps which are precise to small fractions of a second. For example, MPEG timestamps may be utilized in this regard.
  • FIG. 9 illustrates yet another embodiment of the invention in which the primary signal 402 is synchronized with one or more programmed events 902 encoded within the secondary signal 404.
  • a programmed event 902 is a directive to the STB 102 to perform a particular function, such as displaying text or icons or graphics or animation (for example, flash animation), playing streaming media such as video or music or audio clips, directing a browser to a particular web page, or the like.
  • a producer of a secondary signal 404 may include a programmed event 902 within a secondary signal 404 to display the career statistics of a baseball player who just hit a home run.
  • the producer may include a programmed event 902 to display a graphical overlay of fireworks during the home run.
  • programmed events 902 may be received via the Internet 114 (or other transmission medium having a relatively high latency), they may also be subject to the transmission delay 602.
  • a firework display configured to coincide with a home run may be delayed by several seconds.
  • the present invention synchronizes the primary signal 402 with the secondary signal 404, the programmed events 902 are likewise synchronized.
  • FIG. 10 is a flowchart of a method 1000 for synchronizing multiple signals received through different transmission mediums.
  • the method 1000 begins by determining 1002 a relative transmission delay 602 between a primary signal 402 (such as a television signal) and a secondary signal 404 (such as a radio signal received via the Internet 114). Thereafter, the primary signal 402 is buffered 1004 in a storage device 310 for a period of time equal to the relative transmission delay 602 in order to synchronize it with the secondary signal 404. Next, the synchronized primary signal 402 is mixed 1006 with the secondary signal 404. Finally, the primary signal 402 is presented 1008 with the secondary signal 904 on a television 104 or other display device.
  • a primary signal 402 such as a television signal
  • a secondary signal 404 such as a radio signal received via the Internet 114
  • the present invention offers numerous advantageous not available in conventional approaches.
  • the present invention includes a system and method for synchronizing multiple signals received through different transmission mediums.
  • a method and system are described for synchronizing a video program transmitted via a cable network with a secondary audio program, such as a radio program, received via the Internet.
  • a method and system are described for synchronizing a video program transmitted via a cable network with one or more programmed events (for example, directives to perform particular functions, such as displaying text or graphics or animation, playing streaming media, directing a browser to a particular web page, and the like).

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Databases & Information Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

Selon la présente invention, de multiples signaux reçus par l'intermédiaire de différents supports de transmission sont synchronisés dans un décodeur (102) en vue d'un mixage et d'une présentation ultérieurs. Par exemple, un programme vidéo transmis par l'intermédiaire d'un réseau câblé (101) est synchronisé avec un programme audio secondaire, tel qu'un programme radio, reçu par l'intermédiaire de l'Internet (114). Dans un autre exemple, un programme vidéo transmis par l'intermédiaire d'un réseau câblé est synchronisé avec un ou plusieurs événements programmés, tels que des directives pour afficher du texte ou des graphiques ou une animation, diffuser un contenu média en continu, ou diriger un navigateur vers une page web déterminée.
PCT/US2001/026196 2001-01-23 2001-08-22 Synchronisation de multiples signaux reçus par l'intermediaire de differents supports de transmission WO2002060178A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09/768,019 US6630963B1 (en) 2001-01-23 2001-01-23 Synchronizing a video program from a television broadcast with a secondary audio program
US09/768,019 2001-01-23
US09/778,994 2001-02-07
US09/778,994 US6710815B1 (en) 2001-01-23 2001-02-07 Synchronizing multiple signals received through different transmission mediums

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004036921A1 (fr) * 2002-10-18 2004-04-29 Seachange International, Inc. Synchronisation de recuperation pour services de television
WO2004052020A1 (fr) * 2002-12-04 2004-06-17 Koninklijke Philips Electronics N.V. Synchronisation de signaux
EP1615440A1 (fr) * 2004-07-02 2006-01-11 OmniVision Technologies, Inc. Transmission améliorée de vidéo en continu avec mode double réseaux
WO2008106734A1 (fr) * 2007-03-02 2008-09-12 Enikos Pty Limited Procédé et système pour une distribution de contenu
WO2008106733A1 (fr) * 2007-03-02 2008-09-12 Enikos Pty Limited Interface graphique utilisateur
EP2031782A2 (fr) * 2007-08-31 2009-03-04 LG Electronics Inc. Procédé et terminal mobile pour sortir des données de diffusion et données d'informations complémentaires
ES2323615A1 (es) * 2007-02-07 2009-07-21 Deaptronic, S.L. Dispositivo para sincronizacion de señales de video tv con señales de audio procedentes de fuente externa.
EP2134090A3 (fr) * 2008-05-30 2011-09-28 NBCUniversal Media, LLC Système et procédé pour fournir un contenu numérique
CN103167347A (zh) * 2011-12-12 2013-06-19 中兴通讯股份有限公司 移动终端电视节目音视频重新搭配的方法和系统
CN103281574A (zh) * 2011-12-29 2013-09-04 汤姆森特许公司 同步媒体服务的方法
WO2014105201A1 (fr) * 2012-12-24 2014-07-03 Intel Corporation Techniques améliorées de synchronisation audio

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5818441A (en) * 1995-06-15 1998-10-06 Intel Corporation System and method for simulating two-way connectivity for one way data streams
US5818935A (en) * 1997-03-10 1998-10-06 Maa; Chia-Yiu Internet enhanced video system
US5987509A (en) * 1996-10-18 1999-11-16 Silicon Graphics, Inc. System and method for displaying active uniform network resource locators during playback of a media file or media broadcast
US6018768A (en) * 1996-03-08 2000-01-25 Actv, Inc. Enhanced video programming system and method for incorporating and displaying retrieved integrated internet information segments

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5818441A (en) * 1995-06-15 1998-10-06 Intel Corporation System and method for simulating two-way connectivity for one way data streams
US6018768A (en) * 1996-03-08 2000-01-25 Actv, Inc. Enhanced video programming system and method for incorporating and displaying retrieved integrated internet information segments
US5987509A (en) * 1996-10-18 1999-11-16 Silicon Graphics, Inc. System and method for displaying active uniform network resource locators during playback of a media file or media broadcast
US5818935A (en) * 1997-03-10 1998-10-06 Maa; Chia-Yiu Internet enhanced video system

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004036921A1 (fr) * 2002-10-18 2004-04-29 Seachange International, Inc. Synchronisation de recuperation pour services de television
WO2004052020A1 (fr) * 2002-12-04 2004-06-17 Koninklijke Philips Electronics N.V. Synchronisation de signaux
JP2006509405A (ja) * 2002-12-04 2006-03-16 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ 信号の同期
US7552352B2 (en) 2002-12-04 2009-06-23 Nxp B.V. Synchronization of signals
US7386316B2 (en) 2003-08-17 2008-06-10 Omnivision Technologies, Inc. Enhanced video streaming using dual network mode
EP1615440A1 (fr) * 2004-07-02 2006-01-11 OmniVision Technologies, Inc. Transmission améliorée de vidéo en continu avec mode double réseaux
ES2323615A1 (es) * 2007-02-07 2009-07-21 Deaptronic, S.L. Dispositivo para sincronizacion de señales de video tv con señales de audio procedentes de fuente externa.
WO2008106734A1 (fr) * 2007-03-02 2008-09-12 Enikos Pty Limited Procédé et système pour une distribution de contenu
WO2008106733A1 (fr) * 2007-03-02 2008-09-12 Enikos Pty Limited Interface graphique utilisateur
EP2031782A2 (fr) * 2007-08-31 2009-03-04 LG Electronics Inc. Procédé et terminal mobile pour sortir des données de diffusion et données d'informations complémentaires
EP2134090A3 (fr) * 2008-05-30 2011-09-28 NBCUniversal Media, LLC Système et procédé pour fournir un contenu numérique
US8990673B2 (en) 2008-05-30 2015-03-24 Nbcuniversal Media, Llc System and method for providing digital content
US10594980B2 (en) 2008-05-30 2020-03-17 Nbcuniversal Media, Llc System and method for providing digital content
CN103167347A (zh) * 2011-12-12 2013-06-19 中兴通讯股份有限公司 移动终端电视节目音视频重新搭配的方法和系统
WO2013086792A1 (fr) * 2011-12-12 2013-06-20 中兴通讯股份有限公司 Procédé de recombinaison vidéo audio de programme de télévision de terminal mobile, et terminal mobile
US9253525B2 (en) 2011-12-12 2016-02-02 Zte Corporation Method for audio-video re-matching of TV programs on mobile terminal, and mobile terminal
CN103167347B (zh) * 2011-12-12 2018-01-19 中兴通讯股份有限公司 移动终端电视节目音视频重新搭配的方法和系统
CN103281574A (zh) * 2011-12-29 2013-09-04 汤姆森特许公司 同步媒体服务的方法
WO2014105201A1 (fr) * 2012-12-24 2014-07-03 Intel Corporation Techniques améliorées de synchronisation audio
US9521449B2 (en) 2012-12-24 2016-12-13 Intel Corporation Techniques for audio synchronization

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