WO1999035849A1 - Systeme pour combiner les donnees d'une guide electronique des emissions - Google Patents

Systeme pour combiner les donnees d'une guide electronique des emissions Download PDF

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Publication number
WO1999035849A1
WO1999035849A1 PCT/US1999/000093 US9900093W WO9935849A1 WO 1999035849 A1 WO1999035849 A1 WO 1999035849A1 US 9900093 W US9900093 W US 9900093W WO 9935849 A1 WO9935849 A1 WO 9935849A1
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WO
WIPO (PCT)
Prior art keywords
epg
data
content
epg content
data store
Prior art date
Application number
PCT/US1999/000093
Other languages
English (en)
Inventor
Theodore D. Wugofski
Original Assignee
Amiga Development Llc
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
Application filed by Amiga Development Llc filed Critical Amiga Development Llc
Priority to AU20259/99A priority Critical patent/AU2025999A/en
Publication of WO1999035849A1 publication Critical patent/WO1999035849A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—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
    • 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
    • H04N21/4351—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream involving reassembling additional data, e.g. rebuilding an executable program from recovered modules
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • H04N7/165—Centralised control of user terminal ; Registering at central

Definitions

  • This application is related to the co-assigned and co-filed applications, "Method for managing multiple channel maps from multiple input devices in a multimedia system,” “System for time-shifting events in a multi-channel convergence system,” “Method and system for associating web sites to television programs,” “.Individualized parameter control for multiple media sources in a data processing system,” “System for scheduled caching of in-band data services,” and “.Integration of .Internet sources into an electronic program database list,” all of which are hereby incorporated by reference.
  • the present invention is related to electronic program guides and in particular to retrieving and combining electronic program guide data from more than one provider.
  • EPG electronic program guide
  • the data for an EPG is downloaded from a particular provider to a microprocessor either in the television or in an attached device.
  • the program guide data is stored in a data store, such as a database, and displayed on the television screen when the user requests.
  • the source of the information differs from provider to provider. For example, StarSight Telecast, Inc. places program guide data in the vertical blanking interval in the broadcast television signal, Direct TVTM and EchoStar Communications Corp.
  • MPEG2 Motion Picture Experts Group
  • TV Host and Intel Corp.'s Smart TV® require a dial-up telephone connection.
  • the data stores created from the source information are proprietary to the provider and are incompatible.
  • program information given by one provider may be good for one category of program but poor for another category.
  • An electronic program guide (EPG) system combines data from multiple EPG content providers and organizes the EPG data into an EPG content data store.
  • the EPG system includes an EPG content services function which creates and manages the EPG content data store.; a plurality of EPG content transport functions that retrieve the EPG data provided by the EPG content providers from multiple sources and in multiple source-specific formats and a plurality of EPG content provider function which convert the source-specific formatted EPG data into a format compatible with the EPG data store.
  • the EPG content services function also includes a conflict resolution function which determines what EPG data is of higher quality or more timely when similar data is received from more than one source, addition, the EPG content services function registers new EPG content providers into the EPG data store.
  • the data structure of the EPG data store is also described, as is a specific arrangement of modules that implement processes necessary for the operation of the EPG system.
  • the content organizer includes an EPG content data store created and managed by an EPG content services function, a plurality of EPG content transport functions which retrieves the EPG data from the plurality of sources, and an EPG content provider function which converts the EPG data from the multiple formats to an EPG content data store format for storage in the EPG content data store.
  • EPG content data store created and managed by an EPG content services function
  • EPG content transport functions which retrieves the EPG data from the plurality of sources
  • an EPG content provider function which converts the EPG data from the multiple formats to an EPG content data store format for storage in the EPG content data store.
  • the EPG system of the present invention retrieves EPG data supplied by multiple EPG content providers through different sources and organizes the EPG data into a single data store, the viewer is not required to select a single provider, be reliant on a single source for the information, or become familiar with multiple EPG systems.
  • the EPG system gives the viewer more selections, provides more dependability, and makes the EPG data more accessible.
  • the EPG system resolves conflicts between the data from different providers based on data quality or timeliness, the viewer has access to better and more reliable information.
  • Figure 1 A is a block diagram of hardware components for a convergence system utilizing an electronic program guide (EPG) system.
  • EPG electronic program guide
  • Figure IB is a block diagram of a digital processing system shown in Figure 1 A.
  • Figure 1C is a block diagram of a software architecture executing in the digital processing system of Figure IB.
  • Figure 2 is a block diagram of four primary modules of one embodiment of an
  • FIG. 3 is a block diagram of one embodiment of an EPG content data store in the EPG system of Figure 2.
  • Figure 4 is a field layout diagram of a provider record in the EPG content data store of Figure 3.
  • Figure 5 is a field layout diagram of a guide record in the EPG content data store of Figure 3.
  • Figure 6 is a field layout diagram of a channel record in the EPG content data store of Figure 3.
  • FIG 7 is a block diagram of the EPG content data store of Figure 3 showing detailed tables associated with an event table.
  • Figure 8 is a field layout diagram of an event record in the EPG content data store of Figure 7.
  • FFiigguurree 99 is a field layout diagram of an event title record in the EPG content data store of Figure 7.
  • Figure 10 is a field layout diagram of an event description record in the EPG content data store of Figure 7.
  • Figure 11 is a field layout diagram of an event extension record in the EPG content data store of Figure 7.
  • Figure 12 is a field layout diagram of an event start record in the EPG content data store of Figure 7.
  • Figures 13-15 are operation flow diagrams of the processes of the EPG system of
  • An electronic program guide (EPG) system of the present invention organizes schedule and program information from multiple EPG content providers through differing sources and presents a single, optimized menu to the user based on criteria such as quality of the data, timeliness of the data, and timeliness of the program guide provider.
  • the EPG system is part of a convergence system 100 shown in Figure 1 A, such as the Destination personal computer system available from Gateway 2000, Inc.
  • the convergence system 100 incorporates television tuner circuitry into a digital processing system 101, such as a computer which is compatible with standard personal computer systems, and displays television signals and digital output on a large monitor 122 of VGA or better resolution.
  • the EPG system is described in terms of software processes which execute within a microprocessor 186 in the digital processing .system 101, as shown in Figure IB.
  • the processes for the EPG system can be implemented in software, hardware or firmware without departing from the scope of the invention.
  • One embodiment of a software architecture which provides the underlying infrastructure of processing and file input/output operations necessary for the execution of the EPG system is illustrated in Figure lC.
  • the EPG system operates as part of the system services 103 and is represented in Figure 1C as EPG data services 109.
  • the software architecture illustrated in Figure 1C is described in detail in co-pending and co-assigned patent application entitled "Architecture for Convergence Systems" filed on the same day as the present application and assigned to the same assignee, which application is hereby incorporated by reference.
  • an "EPG content provider” is a company that supplies program guide data and a company that provides the audio, video and/or data transmitted in a channel is referred to as a "channel content provider.”
  • a single company can be both a channel content provider and an EPG content provider.
  • the EPG data may be transmitted either in-band or out-of-band, as known by those of ordinary skill within the art.
  • the EPG system 200 comprises four primary modules as illustrated in Figure 2: a plurality of EPG content transport functions 201, a plurality of EPG content provider functions 203, an EPG content services function 205, and an EPG content data store 207. .Arranging the tasks perfoimed by the EPG system into different modules will be readily apparent to one skilled in the art upon reading the detailed descriptions below.
  • the EPG content transport functions 201 move guide data from various sources and into a storage area, such as a hard disk 107, on the digital processing system 101.
  • Each EPG content transport function 201 is specific to the particular source, such as the vertical blanking interval in the broadcast television signal, an 1MPEG2 data stream transmitted via satellite, a phone line, hard media such as CD-ROM, or some other communications means.
  • the EPG content provider functions 203 convert the guide data from source-specific formats into a format understood by the EPG content services functions 205. Detailed information on a source-specific format necessary to support the conversion can be in the public domain, obtained from standards publications, or licensed from the owner of a proprietary format.
  • the EPG content services function 205 stores the converted guide data into the EPG content data store 207, resolving conflicts and combining information from the different EPG content providers according to user preferences as described further below.
  • the EPG content services function 205 also provides an interface for other applications to access the EPG content data base 207 or the EPG content providers through the EPG content provider functions 203.
  • FIG. 3 illustrates data structures in one embodiment of the EPG content data store 207.
  • the data store 207 comprises a provider table 301, a guide table 303, a guide descriptor table 305, a channel table 307, a channel descriptor table 309, a channel region table 311 , a channel extension table 313, a service type table 315, a service table 317, and an event table 319.
  • the EPG content data store 207 is described in terms of tables in a relational database system, one sl illed in the art will readily appreciate that the data contained in the data store 207 can be stored in any type of data structure, including flat files or look-up tables, without departing from the scope of the invention. A brief overview of each data structure is given next, with detailed descriptions following.
  • the provider table 301 describes the EPG content providers that are registered with the EPG content services function. The registration process is described in detail below. Each provider can supply more than one program guide.
  • the guide table 303 identifies which program guides for a provider are managed by the EPG content services function 203.
  • the guide descriptor table 305 provides a description of each guide in the guide table 303 in one or more languages.
  • the channel table 307 identifies which channels are described in a guide.
  • the channel description table 309 provides a descriptton of each channel in the channel table 307 in one or more languages.
  • the channel region table 311 identifies regions (countries, local regions, etc.) in which each channel in the channel table 307 is accessible.
  • the channel extension table 313 identifies any external data associated with a channel in the channel table 307, such as a World Wide Web Internet site or multimedia files stored on media accessible by the convergence system 100.
  • the service type table 315 indicates what type of content, such as audio, video, or data, is available on each channel in the channel table 307.
  • the services table 317 enumerates which source services, i.e., the communications links for downloading the guide data, are supported by each provider.
  • the event table 319 contains program information for each event on a channel during the time period covered by a program guide that contains the channel.
  • the provider table 301 comprises a plurality of provider records.
  • One embodiment of a provider record 400 is shown in Figure 4.
  • a provider identifier field 401 contains a unique identifier for each EPG content provider.
  • a provider type field 403 identifies whether the EPG content services function 205 must request an update of the guide data from the EPG content provider, or whether the provider operates autonomously and notifies the EPG content services function 205 when its guide data has changed.
  • a provider timeliness field 405 indicates how often the provider updates the data it receives from the channel content owner. For example, the provider may supply new guide data every four hours, but the only difference between each update is that the four hours prior to the update time are truncated and the four hours following the update time are included. Schedule or information changes supplied to the EPG content provider by the channel content provider are not reflected in the update.
  • the provider timeliness field 405 for such an EPG content provider would contain a value representing "low" timeliness.
  • the provider timeliness field 405 contains a value representing "medium" timeliness.
  • the provider timeliness field 405 contains a value representing "high" timeliness.
  • Other update frequencies such as more than once a day, can also be designated as being of "high" timeliness.
  • a provider next-update field 407 contains a time at which the EPG content services function 205 should ask for an update to the guide data.
  • a provider quality field 409 contains values which represent ratings of various content categories with respect to the quality of the descriptions supplied by the provider. For example, one EPG content provider may provide better movie descriptions while another may provide better sports descriptions.
  • the provider quality field 409 is user-defined.
  • a service provider name field 411 is a text description of the services made available by the channel content provider, such as audio, video, or data.
  • a content provider name field 413 is a text description of the EPG content provider.
  • a guide provider name field 415 is a text description of the guide provided by the EPG content provider.
  • the guide table 303 comprises a plurality of guide records, one for each guide supplied by a provider.
  • a guide table record 500 shown in Figure 5.
  • a guide identifier field 501 contains a unique identifier for each program guide.
  • a provider identifier field 503 identifies the EPG content provider that initialized (and generally owns) the guide.
  • a starting slot field 505 contains a time for the first time slot that is represented in the guide and a starting day field 507 designates the day of the week for the first time slot. If the guide extends beyond one week, the starting day field 507 includes the appropriate week, month, and/or year values.
  • a validity field 509 rates the validity of the data in the guide. If the provider performs some sort of comparison of the data in the guide, the value in the validity field 509 represents a "high" validity rating.
  • the value in the validity field 509 represents a "low" validity rating.
  • the lifetime field 511 contains a value indicating the latest date/time before which the provider expects the guide will be updated.
  • a guide width field 513 contains a value which represents the period of time included in the guide, measured in "slots.”
  • a slot length field 515 defines the num er of .seconds represented by a slot, such as 108000 seconds (30 minutes).
  • the channel table 307 comprises a plurality of channel records.
  • a channel record 600 is shown in Figure 6.
  • the channel table 307 contains a channel record 600 for each channel included in a program guide that is supplied by an EPG content provider.
  • a guide identifier field 601 designates the guide that contains the channel's information.
  • a provider identifier field 603 refers to the channel content provider responsible for the channel.
  • a display channel number field 605 contains the channel number which is displayed on the monitor.
  • a physical channel number field 607 contains the physical transmission number of the channel on a particular device, such as a satellite receiving station.
  • a short name field 609 holds the channel's call letters while a long name field 611 holds the channel's full name.
  • a conditional access field 613 indicates what level of conditional access is associated with the channel, such as pay- per-view or subscription content.
  • a number-of-streams field 615 contains a value defining the number of audio, video, and data streams associated with the channel.
  • a purchase information field 617 provides data on purchasing the channel, if such purchase is necessary.
  • Figure 7 illustrates one embodiment of the event table 319 that is associated with each channel stored in the channel table 307.
  • the provider table 301 is logically connected to one or more channel tables 307.
  • Each channel table 307 is logically connected to one or more event tables 319.
  • the event table 319 comprises a plurality of event records 800 (as shown in Figure 8).
  • Each event record comprises an event identifier field 801, a title field 803, a description field 805, an extension field 807, a start time field 809, and end time field 811, a duration field 813, a category field 815, a subcategory field 817, a closed captioning flag 819, a subtitles flag 821, a taping flag 831 , and a plurality of ratings fields 825.
  • the ratings fields 825 can contain a TV rating field, an MPAA movie rating field, a content advisory field, a violence rating field, a language rating field, a sexual content rating field, and a V-chip rating field.
  • the number of ratings fields 825 is variable and depends on the number of rating tables provided by the program guide providers. Rating tables are described below.
  • the event identifier field 801 contains a unique identifier for each event.
  • the title field 803 contains, references to one or more event title records 900 in an event title table 701.
  • Each event title record 900 comprises a language identifier field 901 and a title field 903 that contains text for the title as illustrated in Figure 9.
  • the description field 805 contains references to one or more event description records 1000 in an event description table 703.
  • an event description record 1000 comprises a language identifier field 1001 and a description field 1003 that contains text for the description.
  • the extension field 807 contains references to one or more event extension records in an event extension table 705.
  • An event extension record 1100 is shown in Figure 11.
  • Each event extension record 1100 comprises at least one external data field 1101 which identifies a data source associated with a channel, such as a World Wide Web .Internet site or a multimedia file.
  • the start time field 809 contains references to one or more event start records 1200 stored in an event start table 707. As shown in Figure 12, in one embodiment, each event start record 1200 comprises a day field 1201 and a slot field 1203 which together define the beginning of the event.
  • the end time field 811 CM contain a value representing the ending time of the program supplied by the guide data provider, a reference to one or more event ending records similar to the event start records 1200, or be blank. If the end time field 811 is blank, the ending time of a program can be calculated from the start time field 809 and the duration field 813 if the duration field contains a value. Alternatively, the ending time of a program can be implied from the start time field 809 for the event immediately following.
  • the category 815 and subcategory 817 fields contains a category and a subcategory identifier from a category table 709 and a subcategory table 711 respectively.
  • the closed captioning flag 819, subtitles flag 821, and the taping flag 823 indicate when the event contains closed captions, subtitles, or is scheduled for taping by the convergence system 100.
  • Each of the rating fields 825 in the event record 800 contains a value selected from entries in corresponding tables in the EPG database 207.
  • a TV ratings field contains a TV rating from a TV rating table 713
  • an MPAA ratings field contains an MPAA rating from a MPAA rating table 715
  • a content advisory field contains a content advisory rating from a content advisory rating table 717
  • a violence rating field contains a violence rating from a violence rating table 719
  • a sexual content rating field contains a sexual content rating from the sexual content rating table 721.
  • Additional rating fields and related tables can be added to the event table record 800 and the EPG data store 207 as new rating systems are introduced and supplied by the guide data providers.
  • EPG System Operation The operation of the EPG system 200 is shown in Figures 13-15 which illustrate the processes performed by the EPG content services function 205.
  • FIG 13 illustrates the registration process initiated by the EPG content services function 205 to register a new EPG content provider in the data store 207.
  • the registration process 1300 creates a provider record 400 (step 1301), fills in the appropriate fields (1303), and stores the provider record 400 in the provider table 301 in the EPG data store 207 (1305). If no additional EPG content providers are to be registered (step 1307), the registration function exits; otherwise it loops back to step 1301.
  • the EPG content provider function 203 uses the appropriate EPG content transport function 201 to retrieve the guide data from the source.
  • the EPG content provider function 203 then converts the retrieved data from the content provider-specific formats into the appropriate EPG data store record formats which are passed to the EPG content services function 205.
  • the EPG content services function 205 stores the records in the EPG content data store 20 / using an update data store process shown in Figure 14.
  • the update data store process 1400 stores a guide record 500 for each guide supplied by the EPG content provider (steps 1403 and 1405) and stores a channel record 600 for each channel contained within each guide Supplied (steps 1407 and 1409).
  • the update data store process adds an event record 800 into the data store 207 (step 1413).
  • An event is not unique if there is an existing event record 800 associated with the same channel record 600 and which contains a value in the start time field 809 that overlaps the time slot of the new event. If an event is not unique, a conflict resolution process within the EPG content services function 205 resolves the conflict (step 1415).
  • the conflict resolution process 1500 compares data for the existing and new event records (step 1501). one embodiment, the comparison evaluates event record fields such as the title field 803, the description field 805, the ratings fields 825, and the conditional access field 613 in the associated channel record 600. Alternate embodiments that evaluate different data fields will be apparent to one skilled in the art.
  • step 1503 If the data matches exactly (step 1503), the new event record is discarded as a duplicate (step 1505).
  • a mismatch occurs if the data for the existing event does not exactly match the corresponding data for the new event record. Mismatches are handled in several ways.
  • the conflict resolution process 1500 selects a conflict resolution algorithm based on the field(s) in conflict, or on the provider of the data, or the source of the data, or a combination thereof (step 1511). The conflict resolution algorithm determines which of the conflicting records is selected as valid.
  • One embodiment of a conflict resolution algorithm is selected if the title 803, start time 809, end time field 811 (or the calculated or implied ending time as described above), or conditional access 613 fields are different.
  • the selected conflict resolution uses the data from the EPG content provider that has a value representing higher quality timeliness in the timeliness field 405 in its provider record 400.
  • the event record with a higher quality description text in its description field 805 is chosen. Higher quality descriptions contain more relevant words (words such as "a,” "and,” and "if not considered relevant) and include more proper names, such as those of people or places.
  • a conflict resolution algorithm compares the provider quality fields 409 to determine the event record with the higher quality description.
  • the conflict resolution process 1500 updates the data store 207 by storing the new event record (step 1515) if the new record is selected by the conflict resolution algorithm. If there has been a change in an event's starting time or ending time (step 1517), the conflict resolution process 1500 requests the event record for each event that follows the modified event from the EPG content provider function 203 that provided the modified event record (step 1519). The conflict resolution process 1500 determines subsequent event records are not needed when the starting and ending times in a subsequent event record in the data store 207 are the same as those provided by the EPG content provider function 203, i.e., the events "re-align" (step 1521).
  • the EPG system of the present invention retrieves EPG data supplied by multiple EPG content providers through different sources and organizes the EPG data into a single data store, the viewer is not required to select a single provider, be reliant on a single source for the info ⁇ nation or become familiar with multiple EPG systems.
  • the EPG system gives the viewer more selections, providing more dependability, and makes the data more accessible.
  • the EPG system resolves conflicts between the data from different providers based on data quality, the viewer has access to more timely and reliable information.

Abstract

L'invention concerne un système de guide électronique des émissions (EPG) qui combine différentes sources de données relatives aux guides des émissions télévisées, lesdites données étant mises à disposition par différents fournisseurs, et ce pour constituer un fichier unifié de données. Lorsque plusieurs sources fournissent des données similaires, le système EPG combine les données relatives aux guides des émissions, qui proviennent des sources multiples, selon des critères tels que la qualité et l'actualité des données ainsi que la rapidité d'exécution du fournisseur de données.
PCT/US1999/000093 1998-01-05 1999-01-05 Systeme pour combiner les donnees d'une guide electronique des emissions WO1999035849A1 (fr)

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AU20259/99A AU2025999A (en) 1998-01-05 1999-01-05 System for combining electronic program guide data

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US297298A 1998-01-05 1998-01-05
US09/002,972 1998-01-05

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