WO2001001331A1 - Filigranes numeriques dans des emissions de television et radio - Google Patents
Filigranes numeriques dans des emissions de television et radio Download PDFInfo
- Publication number
- WO2001001331A1 WO2001001331A1 PCT/US2000/017157 US0017157W WO0101331A1 WO 2001001331 A1 WO2001001331 A1 WO 2001001331A1 US 0017157 W US0017157 W US 0017157W WO 0101331 A1 WO0101331 A1 WO 0101331A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- receiver
- watermark
- signal
- data
- content
- Prior art date
Links
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—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
- H04N21/439—Processing of audio elementary streams
- H04N21/4394—Processing of audio elementary streams involving operations for analysing the audio stream, e.g. detecting features or characteristics in audio streams
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/90—Details of database functions independent of the retrieved data types
- G06F16/95—Retrieval from the web
- G06F16/955—Retrieval from the web using information identifiers, e.g. uniform resource locators [URL]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
- G06T1/0021—Image watermarking
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
-
- 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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/254—Management at additional data server, e.g. shopping server, rights management server
- H04N21/2542—Management at additional data server, e.g. shopping server, rights management server for selling goods, e.g. TV shopping
-
- 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
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
- H04N21/8358—Generation of protective data, e.g. certificates involving watermark
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/858—Linking data to content, e.g. by linking an URL to a video object, by creating a hotspot
-
- 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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/858—Linking data to content, e.g. by linking an URL to a video object, by creating a hotspot
- H04N21/8586—Linking data to content, e.g. by linking an URL to a video object, by creating a hotspot by using a URL
Definitions
- Broadcast signals can carry in-band digital information though use of known watermark technology (a few examples of which are detailed in the cited patents and applications). This digital information can be used to direct a user to a particular internet site or resident application for supplemental or complimentary information, entertainment, merchandising, and commerce opportunities.
- FIG. 1 shows an illustrative embodiment of the present invention.
- an illustrative embodiment 10 of the present invention includes a radio or television transmitter 12, a portable or fixed radio or television receiver 14, a personal computer or other network connection 16, and remote resources 18 available through the internet 20.
- the transmitter 12 is conventional, but includes a watermark encoder to embed a digital watermark in the transmitted signal.
- the receiver 14 is likewise generally conventional (e.g., including an RF amplifier, a mixer, one or more intermediate frequency amplifiers, and a detector), but additionally includes a watermark detector 22, a button or other user interface feature 24 (which may be on a remote control associated with the receiver), and an external interface 26 (e.g., infrared, wireless, Bluetooth, serial, USB, firewire, etc.).
- the receiver can be a species of computer.
- the watermark payload data is combined with a pseudo-random carrier signal (e.g., by multiplying, XORing, etc.), and combined with (e.g. added to) the audio or video content signal.
- the carrier signal may be shaped in various ways. For example, zeroes in the carrier signal can be omitted (e.g., leaving values of-1 and 1, or -2, -1, 1, and 2, etc.), or the frequency spectrum of the carrier can be tailored to match the frequency spectrum of the signal being encoded, etc.
- the watermarking also encodes a calibration signal with the payload data. This calibration signal is used in decoding, as detailed in the cited patents and applications (e.g., to permit accurate detection of the payload data even from a corrupted signal).
- the computer 16 can be a personal computer, an internet appliance, or other network interface device.
- the computer includes provision for communicating with the external link of the receiver 14, and also includes a network connection for coupling to the internet 20.
- the remote resources 18 include the myriad servers coupled to the internet to provide information, entertainment, and commerce opportunities to users thereof.
- audio material (such as a song or an advertisement) is transmitted to the receiver in the usual manner. Encoded in the audio signal is digital information represented as a watermark. Upon decoding at the receiver, this information is transmitted to the computer 16 (or stored for later transmission if the receiver does not have a persistent network connection).
- the encoded information need only comprise a unique identifier, or database key.
- the identifier serves to initiate from such device one or more supplemental or complimentary applications corresponding to the encoded broadcast content, such as purchasing a song for download, purchasing a CD containing the song, viewing news and concert schedules for recording artists, viewing a music video, etc.
- Similar arrangements and benefits can be delivered through watermarked spoken word programming, and through television (video) broadcasts.
- the broadcasts can be distributed through any of the conventional methods other than over-the-air, including cable and satellite.
- the infrastructure through which the receiver 16 couples to the remote resources 18 can take various forms.
- the user device e.g., receiver 14 or computer 16
- That computer includes a database that stores a URL corresponding to each watermark ID.
- the router computer Upon receiving a watermark ID, the router computer returns the corresponding URL to the originating device (12 or 16).
- a browser at the originating device then establishes a link to the specified URL. That URL then provides the information, entertainment, or commerce opportunity corresponding to the encoded broadcast.
- the just-detailed system is advantageous in that it permits the encoding of a short identifier in the broadcast (e.g., instead of a lengthy URL). Moreover, the corresponding URL can be changed over time, as needed. Other embodiments of the present invention, however, do not need this level of complexity; the encoded identifier can more directly trigger the desired remote resource response.
- Amazon's patent 5,960,411), or an order form could be invoked on the screen of the computer 16 as soon as the data was transmitted to it.
- the digital watermark transmitted with the song could cause a picture of the singer to appear on the personal computer.
- users could indicate their like or dislike for the song.
- the link can be used to allow the user to indicate a "vote" concerning a subject being played over the audio link.
- the embedded ID identifies the subject matter being voted on, and likewise serves to specify the remote resource 18 that is to receive the vote. To that resource the user's computer can dispatch a "yes” or “no” vote, a "like” or “dislike” preference, etc., by corresponding data sent over the internet.
- embodiments like that detailed can be used to enable interactive advertisement and promotion for local radio and TV broadcasters, generating traffic and fulfillment activities for local merchants.
- network broadcast content is locally customized with links corresponding to local merchants and other resources.
- a Ford advertisement may be customized to initiate a link to a local Ford dealership.
- nationally-distributed broadcast content can include links suitable for a national audience (e.g., to corporate web sites of advertisers).
- the local broadcaster may process such network feeds to identify such national links.
- the local broadcast processor may look-up a corresponding local link.
- the existing national link data can then be replaced with the local link data.
- the broadcast may have been encoded with "blank" watermark payload bits that can be filled-in by the local broadcaster without removing the national link. These supplemental payload bits can serve to indicate the locality in which the payload was received, permitting a router computer or the like to return a URL appropriate to that area.
- satellite content distribution can enjoy a virtual high speed asynchronous network capability by downstreaming relatively small digital watermark payloads as segues to PCs and other devices with higher bandwidth connections.
- the distributor sends "pointers" that direct receivers and recipients to certain applications on the other networks; essentially, off-loading the heavy lifting to other carriers so as to provide more value to its customers and content providers with very little bandwidth consumption.
- Auxiliary content that is not desired by all satellite subscribers is not sent over the satellite; those subscribers employ the satellite-conveyed watermark data to obtain such auxiliary content using other connections (e.g., terrestrial internet).
- Radio over the internet is increasingly popular.
- the screen of the internet terminal is poorly utilized in such radio broadcasts.
- a watermark decoded from a web broadcast is decoded, and is used to enhance the experience by supplementing the audio with accompanying visual presentations.
- the display presents streaming and other media on the screen while the internet radio is playing, such ancillary content being related to the then-broadcast radio content.
- This ancillary visual information can include concert schedules, fan news about the musician or person being broadcast, commercial web sites offering CDs, etc.
- the display can present associated commercial information, with accompanying visual and/or video promotional materials.
- these displays can include the opportunity to buy the advertised product, or download a "trial" version.
- the visual displays can include conventional user interface features, such as buttons that can be selected by a user to initiate a purchase transaction or other operation in known manners.
- the computer radio decodes embedded watermark data from the audio programming.
- the watermark literally conveys the address of one or more web sites that are to be displayed.
- the computer can be programmed to recognize these embedded web addresses, and display the corresponding web content in one or more separate browser windows. These windows can be tiled or otherwise presented on the display screen, together with the radio user interface. (The ancillary windows may overlie the radio interface in some embodiments.)
- the embedded watermark information also changes. Web displays corresponding to the earlier-decoded watermark are discontinued, and new web displays corresponding to the current watermark information are presented.
- the audio broadcast need not be literally encoded with web addresses.
- the audio can be encoded with data including an identifier (e.g., 32 bits).
- the computer connects to a remote web server (whose address is pre-identified) and provides this identifier.
- the remote server responds with the web addresses of the content to be displayed.
- the local computer then loads and displays these web pages, as in the first embodiment.
- the embedded identifier also changes, leading to changed web addresses corresponding to the current audio material.
- a watermark-aware radio consider a car radio that has a "capture" button on the front panel (or other form of user interface, e.g., a Capture icon on a GUI). If a user hears a song they want to record and keep, they press the Capture button while the song is playing. In response, the radio device decodes a watermark embedded in the music, and thereby knows the identity of the music. The radio then makes a wireless transmission identifying the user and the desired song. A local repeater network picks up the wireless signal and relays it (e.g. by wireless rebroadcast, by modem, or other communication medium) to a music clearinghouse. The clearinghouse charges the user a nominal fee (e.g. via a prearranged credit card), and queues the music for download to a predetermined location associated with the user.
- a nominal fee e.g. via a prearranged credit card
- the predetermined location is the user's own computer. If a "live" IP address is known for the user's computer, the music can be transferred immediately. If the user's computer is only occasionally connected to the internet, the music can be stored at a web site (e.g. protected with a user-set password), and can be downloaded to the user's computer whenever it is convenient.
- a "live" IP address is known for the user's computer. If the user's computer is only occasionally connected to the internet, the music can be stored at a web site (e.g. protected with a user-set password), and can be downloaded to the user's computer whenever it is convenient.
- the predetermined location is a personal music library maintained by the user.
- the library can take the form, e.g., of a hard-disk or semiconductor memory array in which the user customarily stores music.
- This storage device is adapted to provide music data to one or more playback units employed by the user (e.g. a personal MP3 player, a home stereo system, a car stereo system, etc.).
- the library is physically located at the user's residence, but could be remotely sited, e.g. consolidated with the music libraries of many other users at a central location.
- the personal music library can have its own internet connection. Or it can be equipped with wireless capabilities, permitting it to receive digital music from wireless broadcasts (e.g. from the clearinghouse). In either case, the library can provide music to the user's playback devices by short-range wireless broadcast. By such arrangement, a user can conveniently compile an archive of favorite music - even while away from home.
- the radio can be a portable unit (e.g. a boombox, a Walkman radio, etc.) or a home device, rather than an automotive unit.
- the UI feature employed by the user to initiate capture a musical selection need not be a button (physical or on-screen).
- it can be a voice-recognition system that responds to spoken commands, such as "capture” or "record.”
- it can be a form of gesture interface.
- the radio can decode watermarks from all received programs, and keep the most recent in a small FIFO memory.
- the user need not issue the capture instruction while the song is playing, but can do so even after the song is finished.
- data corresponding to the watermark can be made available to the user in various forms. For example, it can be presented to the user on an LCD screen, identifying the artist and song currently playing. If a corresponding UI button is activated, the device can so-identify the last several selections. Moreover, the data need not be presented to the user in displayed form; it can be annunciated by known computer-speech technologies instead.
- the device In embodiments in which the watermark does not convey ASCII text data, but instead conveys UIDs (unique identifiers), or coded abbreviations, the device must generally interpret this data before presenting it to the user.
- the device is a pocket-sized FM radio and is equipped with a 1 megabyte semiconductor non-volative RAM memory.
- the memory includes a data structure that serves as a look-up table, matching code numbers to artist names and song titles. When the user queries the device to learn the identify of a song, the memory is indexed in accordance with one or more fields from the decoded watermark, and the resulting textual data from the memory (e.g. song title and artist) is annunciated or displayed to the user.
- the RF receiver provides a ready mechanism for providing such updated data.
- the radio "awakens" briefly at otherwise idle moments and tunes to a predetermined frequency at which updated data for the memory is broadcast, either in a baseband broadcast channel, or in an ancillary (e.g. SCA) channel. Or such data can be repeatedly transmitted on an SCA channel, received whenever the radio is turned on.
- ancillary e.g. SCA
- internet delivery of updated memory data can be substituted for wireless delivery. For example, the artist/song title memory in the personal player can be updated by placing the player in a "nest" every evening.
- the nest (which may be integrated with a battery charger for the appliance) can have an internet connection, and can exchange data with the personal device by infrared, inductive, or other proximity-coupling technologies, or through metal contacts. Each evening, the nest can receive an updated collection of artists/song titles, and can rewrite the memory in the personal device accordingly. By such arrangement, the watermark data can always be properly intepreted for presentation to the user.
- the "Capture” concepts noted above can be extended to other functions as well.
- One is akin to forwarding of email. If a consumer hears a song that another friend would enjoy, the listener can send a copy of the song to the friend.
- This instruction can be issued by pressing a "Send” button, or by invoking a similar function on a graphical (or voice- or gesture-responsive) user interface.
- the appliance so-instructed can query the person as to the recipient.
- the person can designate the desired recipient(s) by typing in a name, or a portion thereof sufficient to uniquely identify the recipient. Or more typically, the person can speak the recipient's name.
- a voice recognition unit can listen to the spoken instructions and identify the desired recipient.
- An "address book' ike feature has the requisite information for the recipient (e.g., the web site, IP address, or other data identifying the location to which music for that recipient should stored or queued, the format in which the music should be delivered, etc.) stored therein.
- the appliance dispatches instructions to the clearinghouse, including an authorization to debit the sender's credit card for the music charge.
- the clearinghouse attends to delivery of the music in a desired manner to the specified recipient.
- a listener may query the appliance (by voice, GUI or physical button, textual, gesture, or other input) to identify CDs on which the then-playing selection is recorded. Or the listener may query the appliance for the then-playing artist's concert schedule.
- the appliance can contact a remote database, relay the query, and forward data from the watermark payload identifying the artist and/or song title to which the query relates.
- the database locates the requested data, and relays same back to the appliance for presentation (via a display, by machine speech, or other output) to the user.
- the user can continue the dialog with a further instruction, e.g., to buy one of the CDs on which the then-playing song is included.
- this instruction may be entered by voice, GUI, etc., and dispatched from the appliance to the clearinghouse, which can then complete the transaction in accordance with pre-stored information (e.g. credit card account number, mailing address, etc.).
- a confirming message is relayed to the appliance for presentation to the user.
- a user can query the appliance as to the artist or song-title of the selection currently playing.
- the appliance can consult the embedded watermark data (and optionally consult a memory to determine the textual names associated with coded watermark data), and provide the requested information to the user (e.g., by a display, annunciation, or other output).
- the foregoing concepts e.g. Capture, Send, etc.
- the broadcast is not encoded with different data at different times (e.g., a different payload for each song).
- the broadcast is constantly encoded with a single identifier, e.g., identifying the broadcaster.
- the encoding can be the broadcaster's FCC call sign, a binary identifier corresponding to a particular station, etc.
- Such encoding can be effected anywhere in the audio chain, e.g., in the audio feed between the studio and the broadcast transmitter.
- the audio signal can be converted to digital form (if not already in such form), summed with a low level watermark signal, and converted back to analog form (if necessary).
- the user device e.g., receiver 14
- time data from the clock is written into a memory.
- the time data, and the decoded station identifier can then (or later) be forwarded to a remote database to which the broadcaster writes its play log.
- the audio (or video) selection being broadcast at that instant can be identified.
- the content identifier thereby obtained can then be utilized as above-described to augment the user's enjoyment of the broadcast.
- the receiver may include, for example, a memory (e.g., RAM) in which sampled excerpts of received audio can be stored under control of an associated CPU.
- the stored audio can thereafter be transferred to the computer 16, and the watermark decoded therefrom at the computer.
- the audio can be processed to reduce its size, without unduly impairing the watermark information conveyed thereby.
- One way this can be accomplished is to high pass filter the audio (e.g., with a cutoff frequency of one-fourth the sample frequency).
- the filtered audio can be quantized into a three state signal: -1, 0, or 1, depending on the polarity of the filtered signal. (Values within a predetermined threshold of 0 can be assigned a value of 0.) It will be recognized that such processing is a form of lossless compression - lossy because the process is not reversible.
- the watermark payload can be decoded from the resulting three-state signal (e.g., using the techniques disclosed in the cited patents and applications), even though the underlying audio carrier signal is essentially lost.
- This bit sequence can be further compressed using known lossless compression techniques (e.g., LZ77 or LZ78) to further save on storage requirements.
- LZ77 or LZ78 lossless compression technique
- the high pass filtering can be used without the quantization, and vice versa. Still other compression techniques can naturally be used, provided same do not unduly impair the encoded watermark information.
- all audio received by the receiver is digitized, and the last 5 seconds are always available in a FIFO RAM buffer.
- those 5 seconds of audio are copied into a separate retention memory, and the five next- following seconds of audio are likewise written into that retention memory, yielding 10 seconds of data from which the watermark can later be discerned.
- the audio processing operation just described can be performed on-the-fly during such operation, or by post processing.
- a number of such excerpts can be stored - one each time the button 24 is activated - depending on the capacity of the retention memory.
- Known user interface techniques can be employed to allow the user to manage this collection of data excerpts, e.g., controlling which are transmitted to the computer 16, which are invoked to obtain related internet content, which are permanently stored on-disk in the computer 16 to serve as long-term bookmarks to internet sites of particular interest, etc.
- receiver 14 and computer 16 are described as separate units, this need not be the case.
- the detailed functionality of these devices can be provided in a single unit.
- the detailed embodiments employ particular watermarking techniques detailed in the cited patents and applications, the principles are equally applicable with any other digital watermarking technology, including those that transform the audio or video signal to another domain (e.g., wavelet, DCT, etc.), and alter the signal representation by changing the signal coefficients in such domain.
- any other digital watermarking technology including those that transform the audio or video signal to another domain (e.g., wavelet, DCT, etc.), and alter the signal representation by changing the signal coefficients in such domain.
- auxiliary data-conveyal technologies including SCA subcarriers, vertical blanking interval techniques, etc.
- a song or other content may correspond to links to several alternative destinations.
- the user can be presented a menu of such links from which to choose. Or a link to one of several alternative destinations may be automatically chosen based on the context or environment in which the content was encountered. (E.g., if a user activates the "Capture" button on a portable radio receiver, a different link may be pursued than if the user actives the button while using a desktop computer. In such cases, context information sufficient to distinguish such settings would be relayed from the device to the remote system.)
- the augmentation of the broadcast content is initiated by a user action, e.g., activating a Capture button.
- the augmentation is automatic (e.g., presentation of streaming media corresponding to a watermark decoded from received audio).
- the augmented information can be automatically retrieved, but not presented to the user unless called for.
- the augmentation data can be cached, e.g., on the user's device, and presented immediately, on demand.
- a user listening to an internet radio broadcast can summon additional information by using dropdown menus of the sort typically associated with Windows applications.
- a "More" menu could present options such as "About the artist,” “Order this music,” “Concert schedules,” etc. Unless requested, such information stays hidden. But when such menu is activated, the corresponding information is delivered from the cache.
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Data Mining & Analysis (AREA)
- General Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Television Systems (AREA)
Abstract
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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AU57577/00A AU5757700A (en) | 1999-06-28 | 2000-06-21 | Digital watermarks in tv and radio broadcasts |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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US14153899P | 1999-06-28 | 1999-06-28 | |
US60/141,538 | 1999-06-28 | ||
US14176399P | 1999-06-30 | 1999-06-30 | |
US60/141,763 | 1999-06-30 |
Publications (1)
Publication Number | Publication Date |
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WO2001001331A1 true WO2001001331A1 (fr) | 2001-01-04 |
Family
ID=26839209
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/US2000/017157 WO2001001331A1 (fr) | 1999-06-28 | 2000-06-21 | Filigranes numeriques dans des emissions de television et radio |
Country Status (2)
Country | Link |
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AU (1) | AU5757700A (fr) |
WO (1) | WO2001001331A1 (fr) |
Cited By (13)
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WO2002035746A2 (fr) * | 2000-10-20 | 2002-05-02 | Koninklijke Philips Electronics N.V. | Procede et arrangement permettant une desintermediation et recepteur d'utilisation associe |
WO2003017135A2 (fr) * | 2001-08-14 | 2003-02-27 | Central Research Laboratories Limited | Systeme d'assistance a la navigation web |
EP1457048A2 (fr) * | 2001-11-16 | 2004-09-15 | Thales | Signal de programme de diffusion avec commande, systemes d'inscription et de lecture de commande, chaine de production et de diffusion associes |
US6957041B2 (en) | 2000-09-13 | 2005-10-18 | Stratosaudio, Inc. | System and method for ordering and delivering media content |
US7917130B1 (en) | 2003-03-21 | 2011-03-29 | Stratosaudio, Inc. | Broadcast response method and system |
US8032909B2 (en) | 2001-07-05 | 2011-10-04 | Digimarc Corporation | Watermarking and electronic program guides |
US8166081B2 (en) | 2008-02-05 | 2012-04-24 | Stratosaudio, Inc. | System and method for advertisement transmission and display |
US8542868B2 (en) | 2007-12-17 | 2013-09-24 | CSP—Innovazione Nelle ICT Scarl | Embedding interactive data into an audiovisual content by watermarking |
US8631448B2 (en) | 2007-12-14 | 2014-01-14 | Stratosaudio, Inc. | Systems and methods for scheduling interactive media and events |
US8875188B2 (en) | 2008-02-05 | 2014-10-28 | Stratosaudio, Inc. | Systems, methods, and devices for scanning broadcasts |
US10448217B2 (en) | 2013-09-15 | 2019-10-15 | Technion Research & Development Foundation Limited | Interactive channel |
EP3609093A1 (fr) | 2018-08-09 | 2020-02-12 | FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V. | Relais et unité de réception |
US11252238B2 (en) | 2007-12-14 | 2022-02-15 | Stratosaudio, Inc. | Systems and methods for outputting updated media |
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