US20080172690A1 - Promotion server using streaming media channel - Google Patents

Promotion server using streaming media channel Download PDF

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Publication number
US20080172690A1
US20080172690A1 US11/820,286 US82028607A US2008172690A1 US 20080172690 A1 US20080172690 A1 US 20080172690A1 US 82028607 A US82028607 A US 82028607A US 2008172690 A1 US2008172690 A1 US 2008172690A1
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Prior art keywords
streaming media
promotion
vod
channel
stb
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Abandoned
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US11/820,286
Inventor
Chaitanya Kanojia
Terri Swartz
Darren Wetzel
Mark Fagnani
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Microsoft Technology Licensing LLC
Original Assignee
Chaitanya Kanojia
Terri Swartz
Darren Wetzel
Mark Fagnani
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Publication date
Priority to US25335000P priority Critical
Priority to US10/003,079 priority patent/US7237250B2/en
Application filed by Chaitanya Kanojia, Terri Swartz, Darren Wetzel, Mark Fagnani filed Critical Chaitanya Kanojia
Priority to US11/820,286 priority patent/US20080172690A1/en
Publication of US20080172690A1 publication Critical patent/US20080172690A1/en
Assigned to MICROSOFT TECHNOLOGY LICENSING, LLC reassignment MICROSOFT TECHNOLOGY LICENSING, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MICROSOFT CORPORATION
Application status is Abandoned legal-status Critical

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/235Processing of additional data, e.g. scrambling of additional data or processing content descriptors
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/21Server components or server architectures
    • H04N21/222Secondary servers, e.g. proxy server, cable television Head-end
    • H04N21/2225Local VOD servers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25Management 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
    • H04N21/258Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
    • H04N21/25866Management of end-user data
    • H04N21/25883Management of end-user data being end-user demographical data, e.g. age, family status or address
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25Management 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
    • H04N21/266Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/2668Creating a channel for a dedicated end-user group, e.g. insertion of targeted commercials based on end-user profiles
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network, synchronizing decoder's clock; Client middleware
    • H04N21/438Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
    • H04N21/4383Accessing a communication channel, e.g. channel tuning
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/65Transmission of management data between client and server
    • H04N21/654Transmission by server directed to the client
    • H04N21/6543Transmission by server directed to the client for forcing some client operations, e.g. recording
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81Monomedia components thereof
    • H04N21/812Monomedia components thereof involving advertisement data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/08Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/087Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
    • H04N7/088Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/16Analogue secrecy systems; Analogue subscription systems
    • H04N7/162Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • H04N7/165Centralised control of user terminal ; Registering at central

Abstract

Idle video-on-demand (VOD) and/or other streaming media channel capacity is used to deliver promotional content to selected set-top boxes (STBs) in a cable television network. Commercial segment cues are used to instruct a set-top box to switch away from a broadcast program to the streaming media channel during a commercial segment, and then switch back again to the original broadcast program at the end of the segment.
More particularly, a promotion server determines an asset to be distributed such as a targeted promotion item (e.g., a commercial), and a list of STBs that are to receive it. The promotion server causes the video promotion content to be stored in VOD/streaming media servers located at the head ends. A scheduler process then delivers schedule messages to head end message servers which identify each promotion asset, and an STB which is to receive it. The head end message server notifies its associated VOD/streaming media server which then cues the asset by loading the asset, starting the asset, but pausing it. Prior to the occurrence of a commercial slot in a broadcast program, an asset trigger is inserted into the broadcast stream at the head end. This asset trigger contains general information concerning the asset to be sent, and an idle VOD/streaming media channel number. The STB receives the asset trigger and readies itself to tune to the VOD/streaming media channel when cued for at the beginning of a commercial segment, but does not yet tune to the VOD/streaming media channel. Upon detection of a commercial cue tone in the broadcast channel, the head end message server sends a tune away trigger to the STB, and also instructs the VOD/streaming media server to start playing the cued promotion. When the STB receives a tune away trigger, it switches from the broadcast channel being played to the selected idle VOD/streaming media channel, and the promotion is viewed.

Description

    RELATED APPLICATION(S)
  • This application is a continuation of U.S. application Ser. No. 10/003,079, filed Nov. 2, 2001, which claims the benefit of U.S. Provisional Application No. 60/253,350, filed on Nov. 28, 2000.
  • The entire teachings of the above application(s) are incorporated herein by reference.
  • BACKGROUND OF THE INVENTION
  • This invention relates generally to broadcast systems such as cable television networks and more particularly to a technique for coordinating the insertion of specific video content, including targeted commercial or other promotional video content, over idle video-on-demand channels.
  • For many years it has been realized that cable television (CATV) systems provide numerous advantages as compared to over-the-air broadcast systems. First, these cable systems were valued for their ability to provide for reception of signals in remote rural locations, or where radio signals may be blocked, such as in dense high rise apartment buildings. Later, it was realized that by incorporating long distance communications equipment, such as orbital satellite transponder equipment, centralized distribution networks could be built that not only could route local channels more reliably, but also distribute program content on a nation-wide basis. This gave rise to broadcast program content which is available strictly for the cable television subscriber, and the now widely familiar movie, news, weather, music, childrens, sports, family and other program-gendre-specific cable channels.
  • The present trend is towards a model where the reception devices in the home will include embedded computer systems designed for a particular function or purpose. Today, for example, set-top boxes typically have limited data communication capabilities. The main function of these devices is to handle channel access between residential users and a head end or server on the cable TV network. For example, these systems are typically deployed to offer certain types of premium services, such as video-on-demand. This service allows a viewer to use a menu system to select from a variety of typically pre-recorded premium programs that may be available, such as movies or sporting events. The selected program content is then immediately delivered to the viewer over channels dedicated to delivery of the video-on-demand content.
  • In the future, the functionality offered by these set-top boxes or other embedded platforms will be expanded even further. For example, they may offer Internet browsing capabilities and e-commerce serving capabilities. Moreover, it is anticipated that common-household appliances will also have computer network functionality, in which case the set-top boxes may be used to remotely control and automate various tasks in the home.
  • Indeed, millions of digital set-top boxes have already been deployed in the United States. It is estimated that the worldwide market for Internet appliances such as digital set-top boxes and other Internet-connected terminals will reach $17.8 billion in 2004. Increasingly, advertisers and content providers therefore view the cable set-top as the first platform of choice for widespread delivery of a suite of intelligent content management and distribution services.
  • SUMMARY OF THE INVENTION
  • The present invention is a system for delivery of targeted content such as promotional video content to a cable television viewer, where the specific content is under control of the a central operator and the viewer is not necessarily aware of the targeted nature of the content.
  • Consider that the digital set-top box provides interesting functionalities, including the ability to collect data such as a log of the channels watched over time. The set top box can thus be designed to report this information to a central location. At the central location, this data can be aggregated for many hundreds of thousands of users. This information, when coupled with other information, such as viewer demographics, can then be used by advertisers to blanket defined market segments with promotional content. The delivery of promotions to specific target segments can thus allow for impulse responses yielding immediate increases in product revenues.
  • However, a nationwide cable television network may have hundreds of thousands, if not millions of set-top boxes, each tuned to a different channel. An efficient scheme for routing the targeted content to specific set-top boxes is therefore not as straightforward as it might appear at first glance.
  • Some have proposed systems in which the targeted content is digitized and sent to the set-top boxes in compressed form, well prior to its display. However, even a single promotion may require several hundred megabytes of storage. These techniques therefore require each set-top box to have a fairly large storage capacity, the cost of which might be prohibitive. And if such a distribution network were built using strictly standard data network protocols such as TCP/IP, the sheer number of require connections could overload a central data servers and routers.
  • The present invention seeks to overcome these limitations by making use of idle video-on-demand channel capacity to deliver promotional content to selected set-top boxes in the network. The set-top boxes are then enabled to switch away during a commercial segment from the broadcast program to the available video-on-demand channel. The set-top boxes then switch back to the previously selected broadcast program at the end of the segment.
  • More specifically, a network configured in accordance with the invention includes a promotion server, a scheduler process, and a message router located and/or controlled at a central location, head end locations that include message servers, VOD servers, and trigger insertion equipment, and set-top boxes (STBs) located at subscriber premises that include at least a message client process and a promotion agent process.
  • The promotion server determines an asset to be distributed such as a targeted promotion item (e.g., a commercial), and a list of STBs that are to receive it. The promotion server causes the video promotion to be sent to a VOD service so that it is available at the VOD servers at the head ends.
  • The scheduler process then delivers schedule messages to the head end message servers which identify the promotion and an STB which is to receive it. Receipt of a schedule message by the head end message server causes its associated VOD server to cue the asset by loading the asset, and starting the asset, but pausing it so that the asset does not yet play.
  • Prior to the occurrence of a commercial slot in a broadcast program, an asset trigger is inserted into the broadcast stream at the head end. This asset trigger contains general information concerning the asset to be sent, and a VOD channel number. The STB receives the asset trigger and readies itself to tune to the VOD channel when it detects a commercial begin cue tone.
  • Upon detection of a commercial begin cue tone in the broadcast channel, the head end message server sends a tune away trigger to the STB, and also instructs the VOD server to start playing the cued promotion. When the STB receives the tune away trigger, it switches from the broadcast channel being played to the selected VOD channel, and the promotion is viewed.
  • When a commercial end cue is detected in the broadcast channel, the head end message server instructs the STB to tune back be sending a tune back trigger. The tune back trigger causes the STB to return to the broadcast channel that was being watched prior to delivery of the promotion.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings in which like reference characters refer to the same parts throughout the different views. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.
  • FIGS. 1A and 1B are a block diagram of a network in which promotion is delivered using a video-on-demand channel according to the invention.
  • FIG. 2 is a process flow diagram illustrating how the various elements and processes in the system deliver the promotion.
  • DETAILED DESCRIPTION OF THE INVENTION
  • A description of example embodiments of the invention follows.
  • 1. The Promotion Delivery System Generally
  • Turning attention now to the drawings, FIGS. 1A and 1B illustrate a multimedia content delivery system which delivers promotions using a video-on-demand channel according to one embodiment of the present invention. The content delivery system may be any type of Cable Television (CATV) network system which may include any type of Hybrid Fiber Coax (HFC) physical cabling, or satellite equipment, or even digital video content distribution systems based on Digital Subscriber Line (DSL) or broadband wireless technologies such as Microwave Distribution Services (MMDS).
  • The system includes a data center having a promotion server subsystem 200 at which the promotion delivery process originates, and a cable signal distribution network, including head end locations 300-1, . . . , 300-h for routing the promotions to a large number of network devices or set top boxes (STBs) 410 located at individual residences and other cable system subscriber locations 400-1, 400-2, . . . , 400-r, . . . , 200-x, 400-y, where respective video displays 450 are located. The promotions include promotional content that may be presented in various multimedia formats including compressed digital formats (MPEG 2 and 4), or praghical images compressed and uncompressed using standard formats such as JPEG, GIF or BMP. Promotions are used to advertise goods and services, promote events, or present other commercial or non-commercial information.
  • The promotion server subsystem 200 located at the data center communicates with a promotion agent subsystem 430 embedded within each of the STBs 410. The promotion server subsystem 200 and the promotion agent subsystems 430 may communicate with each other through the routing server 230, data network 275, head end router 310, head end message server 320, and message clients 420 by using a combination of application-level messaging and serialized bulk data transmissions.
  • In more detail, the promotion server subsystem 200 includes a database server 210, a promotion manager server 220, a message routing server 230, a promotion scheduler 240, and a bank of message routers 250. These components are typically located at a central location in the multimedia network such as at a data center or head end, or divided between the two depending on the density and population of STB devices 410.
  • The routers 250 communicate with the hea ends 300 through a data network 275. The data network 275 may be a local area network, but depending upon the geographic dispersion of the head ends 300, may itself include a wide area network having a further hierarchy of routers and bulk servers (not shown in FIGS. 1A and 1B). Ultimately, each of the STB devices 410 is reachable through the data network 275 via an associated head end 300. In a typical cable television network, there may be many thousands of network devices 410 connected to a particular head end 300, and there may be many thousands of head ends 300.
  • Each head end 300 includes a number of devices and processes including a head end message server 320, a trigger inserter 330, a Video-on-Demand/Multimedia (VOD/streaming media) streaming server 340 and associated storage device 350, and RF distribution equipment 370, which distributes broadcast video channels from a video distribution network (not shown).
  • The head end router 310 sends and receives data messages to and from the promotion server subsystem 200, routing them to and from the head end message server 320.
  • The head end message server 320 receives schedule messages indicating the schedule of promotions for particular STBs 410 connected to its respective head end 300-1. The hea end message server also transmits and receives messages to the STBs 410 using an Out-of-Band (OOB), In-Band (IB), or broadcast trigger path over the cable network. The signaling used for data communication may be narrowband Quadrature Phase Shift Keying (QPSK), or if high bandwidths are needs, may be Quadrature Amplitude Modulation (QAM).
  • Upon the occurrence of certain events, the head end message server 320 also uses the trigger inserter 330 to insert trigger signals into the RF cable channel signals generated by the RF equipment 370. The use of trigger signals is an additional expedient communication path for critical cueing events.
  • The VOD/media server 340 is connected to receive and store VOD/streaming media content from a VOD distribution network (not shown) provide VOD/streaming media channels to the RF equipment. It should be understood that the VOD/streaming media content, which typically includes premium programs such as movies or sporting events, in this instance also include promotions. The VOD/streaming media content can be stored in recorded form. If it originates in analog form, it is typically stored in a compressed digital format.
  • At least three signal paths are there present between the head end 300 and the STBs 410, including a bi-directional data path for data messages, a broadcast video stream including data in the VBI spectrum or “stuffed” into the private data segments of an MPEG stream, an analog video-on-demand channel or other available channel that provides streaming media such as digital content channel.
  • To determine how to deliver targeted promotions to the network devices, the promotion server subsystem 200 generates viewership profiles for each of the STBs 410 from data collected using a variety of statistical models. The viewership profiles are then used to associate groups of STBs 410 with a particular given target promotion.
  • More particularly, the promotion server subsystem 200 periodically collects viewer usage data from the promotion agent subsystem 430 located in each of the STBs 410 to generate viewership profiles. In television networks, the data collected by the promotion server subsystem 200 may include tuner data (i.e., a history of channels watched) and responses to past promotions. This history is kept on a relatively fine time scale, such as five seconds. In this way, it can be determined how long a particular promotion was deployed, or even which portions of a promotion or video program were viewed.
  • The so-called promotion groups are thus collections of STB devices 410 whose individual viewership profiles match membership criterion describing a particular demographic or viewership history. For example, a promotion group may be demographically based, i.e., “married women in their 30's with more than one school age child and a household income of at least $100,0000,” or based on viewership history, i.e., “tends to watch the Golf Channel on Sunday afternoon.” Therefore, the promotion delivery system 200 is adaptable to changes in viewer usage or viewership patterns by making adjustments to promotion groups. The process for creation and selection of promotion groups is described in more detail in the U.S. Provisional Patent Application Ser. No. 60/253,488 filed Nov. 28, 2000, entitled “Using Viewership Profiles for Targeted Promotion Deployment” which is hereby incorporated by reference in its entirety.
  • Promotions are then scheduled for delivery to promotion groups of specific STBs 410 which may not all be connected to the same head end 300. A promotion is scheduled for delivery to a promotion group by an advertiser or service provider entering a scheduling request for a promotion such as via the promotion manager 220. The promotion manager server 220 packages the promotion for delivery and by storing a record of it in the database server 210, and notifying a video-on-demand service (not shown) that the promotion content will be needed at the VOD/streaming media server 340 locations at the head ends 300. Typically, broadcast VOD content, such as movies, is more likely distributed using Digital Audio Tape (DAT) which is sent by courier to the various head end locations.
  • However, if a wide area data network is in place between the head end locations and the central location, the promotion assets can be distributed to the VOD/streaming media servers 340 using such a network. In such a case, the promotion information is read from the database 210 by the scheduler 240 which then creates customized transmission schedules that specify when each of the STBs 410 is to receive it. Upon receipt of the transmission schedule messages, the promotion agent 430 in each of the STBs 410 processes each schedule entry and waits for the delivery of each promotion identified in the transmission schedule. For further information concerning the use of a wide area network for the distribution of promotions, and a specific protocol and format for such promotion data, reference should be made to U.S. Provisional Patent Application Ser. No. 60/253,369 filed Nov. 28, 2000, entitled “Synchronization of Bulk Data Transfers To End Node Devices In A Multimedia Network” which is hereby incorporated by reference in its entirety.
  • 2. Process for Delivery of Promotion Content Using Video-on-Demand Channel
  • Turning attention now to FIG. 2, a preferred embodiment of the process for delivery of targeted promotion content will be described. Initially the system is in a idle state 500.
  • Moving to step 510, the promotion server 220 assigns promotion assets to specific STBs 410, storing this information in the data base server 210.
  • Next, in step 520, the scheduler 240 determines that promotions are in need of distribution, and reads the information in the database 210 to create individual transmission schedules. From the schedules are built a list of promotion schedule messages. A promotion schedule message is typically created for each instantiation of an expected playback of a promotion at a particular STB 410. The schedule message contains payload fields identifying a promotion, the network address or other identifier of the individual STB which is to receive the promotion, and an expected time by which the promotion is to be delivered.
  • In step 530 the routing server 230 routes the schedule messages out over the data network 275 to the intended head end 300 via the routers 250 and 310.
  • Following that, in step 540 a particular schedule message arrives at the message server 320. The message server in turn sends a message to its associated local VOD/media server 340 that a promotion is to be sent.
  • In step 545, this causes the VOD/streaming media server 340 to load the identified asset, and cue the asset for playback, but without actually starting the playback at this time. The VOD/streaming media takes other steps at this time, such as to identify a VOD/streaming media channel number on which the asset will be played, back to the message server 320.
  • At this point, in step 548, the message server 320 also communicates with the specific STB 410 indicated in the schedule message. This message may include information about the asset such as an identifier which the promotion agent 430 in the STB may use to record the fact that it was played. This message is sent over the OOB/IB data path to the STB 410 as previously described.
  • After some period of time, a state 550 is entered which occurs a short time before a commercial break. In this state the message server causes an asset trigger to be inserted in the broadcast stream. This trigger, which may typically be sent in the Vertical Blanking Interval (VBI) as defined in the ATVEF specification, or in other ways. For example, the trigger may be placed in the private data segments of an MPEG stream, if the VOD/streaming media content is so formatted. In any event, the asset trigger contains text character, or other data indicating general information identifying the upcoming promotion, and a VOD/streaming media channel number on which it will be played.
  • Next, a commercial cue is detected in the broadcast signal at the head end 300 as output by a digital ad insertion system typically located at the insertion location in the broadcast network. Since only a few VOD/streaming media channels will be used for the purpose of distributing promotions, the handful of such channels used for this purpose can be monitored at the head end for such tones. Detection of commercial cue causes a tune away trigger to be sent, in step 560, from the head end 300 to the STB 410.
  • In turn, receipt of the tune away trigger causes the promotion agent 430 in the STB 410 to switch to the indicated VOD/streaming media channel. At the same time, the message server 320 at the head end signals the VOD/media server 340 to begin playback of the promotion.
  • The STB may include circuits that blank an undesirable “pixelation” effect that may occur during channel switchover to the VOD/streaming media channel. Alternatively, other information such as channel information is displayed during switchover to the VOD/streaming media channel.
  • The promotion is then viewed at the STB 410 in state 565, until a commercial end tone is detected. At this point, in state 570, the message server 320 instructs the promotion agent 430 in the STB 410 to return to the original broadcast channel, such as by sending another tune back trigger.

Claims (4)

1. In a cable television network system that connects set-top boxes (STBs) to receive broadcast program content from cable network head end distribution points, a method for delivery of a promotional content stream comprising the steps of:
cueing a promotional content stream at a streaming media server to be played on a streaming media channel for a particular STB, the streaming media server located at a cable network head end;
sending a first trigger to the particular STB indicating the streaming media channel number, but which does not cause the STB to yet switch to the streaming media channel;
sensing a commercial cue tone signal in a broadcast channel being watched at the STB, the commercial cue tone indicating an upcoming start of commercial segment; sending a second trigger to cause the STB to switch to the streaming media channel indicated by the first trigger; and
beginning playback of the promotional content stream.
2. A method as in claim 1 wherein the STB stores a channel number being watched prior to playback of the promotional content stream, and returns to the stored channel number once the promotional content stream ends.
3. A method as in claim 1 wherein pixelation that may occur during channel switchover to the streaming media channel is blanked at the STB.
4. A method as in claim 1 wherein channel information is displayed during switchover to the streaming media channel.
US11/820,286 2000-11-28 2007-06-19 Promotion server using streaming media channel Abandoned US20080172690A1 (en)

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US25335000P true 2000-11-28 2000-11-28
US10/003,079 US7237250B2 (en) 2000-11-28 2001-11-02 Promotion server using video on demand channel
US11/820,286 US20080172690A1 (en) 2000-11-28 2007-06-19 Promotion server using streaming media channel

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Cited By (18)

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