US20040083485A1 - Viewer data collection system and method for use in a direct broadcast satellite television network - Google Patents
Viewer data collection system and method for use in a direct broadcast satellite television network Download PDFInfo
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- US20040083485A1 US20040083485A1 US10/408,898 US40889803A US2004083485A1 US 20040083485 A1 US20040083485 A1 US 20040083485A1 US 40889803 A US40889803 A US 40889803A US 2004083485 A1 US2004083485 A1 US 2004083485A1
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Definitions
- the present invention relates to communications systems and methods. More specifically, the present invention relates to systems and methods for measuring an audience for a telecast in real time.
- Viewership monitoring provides critical information for broadcasters with regard to the tastes, preferences and demographics of its audience for various programs aired during a broadcast period. This information allows broadcasters to select programs to optimize viewership and revenue from subscriptions and/or advertising.
- the inventive system is adapted to receive a signal having multiple channels of program content and associated channel identification information.
- the system is adapted to parse the program content and channel identification information from the received signal.
- the system outputs selective channels of program content in response to user input and the parsed program content.
- the system monitors the selected channels and provides viewership data with respect thereto.
- the viewership data includes channel identification information.
- the system includes a direct broadcast satellite set top box in which a tuner and a demodulator are disposed.
- the tuner and the demodulator operate with a processor programmed to parse the received signal and extract the program content and channel identification information therefrom.
- the channel information is virtual.
- a smartcard is included for storing the viewership data. The data is selectively transmitted based on an event, time duration or command to a centralized data processing center where it is combined with demographic data to facilitate analysis thereof.
- FIG. 1 is a block diagram showing an illustrative implementation of a direct broadcast satellite system with a viewership data collection system in accordance with the teachings of the present invention.
- FIG. 2 is a block diagram showing an illustrative implementation of the set top box of FIG. 1 in accordance with the teachings of the present invention.
- FIG. 3 is a block diagram showing an illustrative implementation of a smartcard adapted for use in accordance with the teachings of the present invention.
- FIG. 4 is a flow diagram that illustrates the operation of the smartcard 40 in accordance with the teachings of the present invention.
- FIG. 5 is a block diagram illustrating the data processing operation of the present invention.
- FIG. 6 shows how viewership data is correlated to demographic data in accordance with the teachings of the present invention.
- FIG. 1 is a block diagram showing an illustrative implementation of a direct broadcast satellite system with a viewership data collection system in accordance with the teachings of the present invention.
- the system 10 includes a program database 12 .
- the program database provides program content, channel identification, date, time and other information relevant to the provision of direct broadcast satellite television programming as will be appreciated by those of ordinary skill in the art.
- the database 12 may be stored on a server or other suitable storage medium.
- the database 12 sends information to a pair of systems that, together, comprise a program data encoder 14 .
- the program data encoder 14 may be a proprietary security system which encodes program content with a proprietary algorithm for secure transmission and conditional access.
- a smartcard command generator 16 formats authorization and other commands for smartcards discussed more fully below.
- the smartcard command generator 16 provides the commands necessary to authorize programming and authorize the data collection capability.
- the program data and smartcard commands are multiplexed into a video stream at one of a number of broadcast centers 18 and uplinked to one or more direct broadcast satellites 20 in a manner well-known to those skilled in the art.
- multiple video and audio channels may be embedded into a single stream for a corresponding transponder on the satellite 20 .
- the satellite may have multiple (e.g., 34) transponders.
- Each transponder is adapted to receive a respective bit stream comprising, for example, 12 video channels and 20 audio channels and a separate copy of the smartcard commands.
- the uplinked streams share the smartcard commands. That is, the smartcard commands are identical on each stream. This assures that each end user receives the same command stream regardless of the transponder to which the user is tuned.
- each stream is a stream of digital data which comprises ‘meta data’—program guide and channel ID data and conditional access data.
- the channels are ‘virtual’ inasmuch as the multiple channels are provided on a single carrier frequency.
- Channel ID data is embedded in the stream and parsed out on receipt.
- conventional systems operate with decoders on separate analog ‘physical’, as opposed to virtual, channels.
- the use of virtual channel assignment allows for an inexpensive relocation of virtual channels to other carrier frequencies without necessitating a change in an associated reporting system.
- the uplinked streams are relayed via satellite 20 to a number of home-based satellite antennas 22 to which a set top boxes 30 is connected.
- the set top box 30 is adapted to interface with a smartcard 40 .
- the smartcard allow for the set top boxes to be upgraded inexpensively.
- FIG. 2 is a block diagram showing an illustrative implementation of the set top box of FIG. 1 in accordance with the teachings of the present invention.
- the box 30 includes a digital tuner/demodulator 32 which receives, downconverts and demodulates the satellite signal from the dish antenna 22 .
- the satellite signal is encoded in accordance with the DSS transport protocol.
- the tuner demodulator 32 outputs a digital baseband signal to a data processor 34 .
- the processor 34 parses the digital baseband signal into, inter alia, its program content and channel ID streams in a conventional manner.
- the program content is forwarded to a conventional video/audio decompression unit 37 based on channel selections made by the user via a user interface 36 .
- the channel ID associated with the user's channel selections are forwarded to the smartcard 40 via a smartcard hardware and software reader or interface 35 .
- FIG. 3 is a block diagram showing an illustrative implementation of a smartcard adapted for use in accordance with the teachings of the present invention.
- the smartcard 40 includes an interface 42 adapted to communicate with the interface 35 of the set top box (illustrated in FIG. 2).
- the smartcard may be implemented in accordance with ISO standards 7810 and 7816 parts 1-3 entitled “Identification Cards-Integrated Circuit(s) Cards with Contacts”.
- the interface 42 effects communication between the processor 34 of the set top box 30 and a processor 44 on the smartcard 40 .
- the smartcard processor 44 receives and executes program instructions from a read-only memory (ROM) 46 and an electrically-erasable programmable read-only memory (EEPROM) 48 and stores data in EEPROM ( 48 ) and in a random access memory 49 .
- ROM read-only memory
- EEPROM electrically-erasable programmable read-only memory
- FIG. 4 is a flow diagram that illustrates the operation of the smartcard 40 in accordance with the teachings of the present invention.
- the smartcard commands are parsed from the received baseband digital stream by the processor 34 of the set top box and sent to the smartcard 40 .
- the subscriber authorizations and attributes are stored in the EEPROM 48 .
- program attributes are parsed and send to the smartcard by the processor 34 of the set top box 30 .
- the program attributes may include authorization to view a particular channel, parental ratings, and pay per view information.
- the processor 44 of the smartcard compares the program attributes with the subscriber authorizations.
- the card processor 44 If there is a match, at step 4 , the card processor 44 generates a descrambling key and forwards the key to the set box processor 34 via interface software 102 . The processor 34 then uses the key to descramble the selected program. If the attributes do not match, the card sends a message to the viewer via the set top box indicating that the channel is not available for viewing.
- viewership and pay-per-view callback data is communicated from the processor 44 of the smartcard 40 to a data processing system 17 (shown in FIG. 1) via the smartcard interface 35 and interface software 102 , processor 34 and a conventional dialup modem 39 of the set top box, a standard phone line 31 , an automated callback system 50 and the smartcard command generator 16 (FIG. 1) on a time schedule.
- the callback system receives the phone call at a location relatively near to the set top box 30 and forwards the data from the phone call to the smartcard command generator 16 .
- the smartcard may be programmed to automatically send viewership data on the occurrence of an event, expiration of a time period or other trigger function such that a command may not be required. Timing information for the smartcard is encoded into the uplinked stream by the smartcard command generator and/or the program data encoder.
- FIG. 5 is a block diagram illustrating the data processing operation of the present invention.
- the data processing system 17 receives program data from the program database 12 , smartcard viewership data from the smartcard command generator 18 , and household demographic data from a customer service facility.
- the processing system combines this data in the form of reports and provides reports via a user interface 19 .
- FIG. 6 shows how viewership data is correlated to demographic data in accordance with the teachings of the present invention.
- smartcard viewership data is correlated to demographic data via the smartcard ID number.
- the smartcard viewership data is correlated to the program data via the channel number, start time and program duration.
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Security & Cryptography (AREA)
- Databases & Information Systems (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Debugging And Monitoring (AREA)
Abstract
A system and method for collecting viewership data. The inventive system (10) is adapted to receive a signal having multiple channels of program content and associated channel identification information. The system (10) is adapted to parse the program content and channel identification information from the received signal. The system (10) outputs selective channels of program content in response to user input and the parsed program content. The system (10) monitors the selected channels and provides viewership data with respect thereto. The viewership data includes channel identification information.
Description
- This application claims benefit of U.S. Provisional Application entitled VIEWER DATA COLLECTION SYSTEM, filed Oct. 25, 2002 serial No. 60/421,264.
- 1. Field of the Invention
- The present invention relates to communications systems and methods. More specifically, the present invention relates to systems and methods for measuring an audience for a telecast in real time.
- 2. Description of the Related Art
- Viewership monitoring provides critical information for broadcasters with regard to the tastes, preferences and demographics of its audience for various programs aired during a broadcast period. This information allows broadcasters to select programs to optimize viewership and revenue from subscriptions and/or advertising.
- One technique for monitoring viewership is to poll the viewing habits of an audience manually. These techniques involve the use of questionnaires filled out by the viewer directly or via telephone solicitation. Unfortunately, the manual approach relies on viewer memory and requires user cooperation and feedback. Accordingly, this approach is costly, inaccurate, slow and burdensome to the viewer.
- Certain systems are known in the art for automatically monitoring viewership. However, what is known about these generally proprietary systems suggests that the systems are designed to work with analog tuners. Analog tuners require a separate (physical) frequency for each channel. Digital tuners, such as those employed in direct broadcast satellite networks, are designed to receive multiple (virtual) channels on a single frequency. Hence, conventional automatic systems for monitoring viewership have not heretofore been able to function with satellite direct broadcast set top decoders.
- Accordingly, a need exists in the art for an inexpensive, accurate system and method for automatically monitoring the viewing habits of viewers of direct broadcast satellite television programming.
- The need in the art is addressed by the system and method for collecting viewership data of the present invention. In a most general embodiment, the inventive system is adapted to receive a signal having multiple channels of program content and associated channel identification information. The system is adapted to parse the program content and channel identification information from the received signal. The system outputs selective channels of program content in response to user input and the parsed program content. The system monitors the selected channels and provides viewership data with respect thereto. In accordance with the invention, the viewership data includes channel identification information.
- In a specific implementation, the system includes a direct broadcast satellite set top box in which a tuner and a demodulator are disposed. The tuner and the demodulator operate with a processor programmed to parse the received signal and extract the program content and channel identification information therefrom. Inasmuch as the channel information is embedded in the received signal, the channel information is virtual. A smartcard is included for storing the viewership data. The data is selectively transmitted based on an event, time duration or command to a centralized data processing center where it is combined with demographic data to facilitate analysis thereof.
- FIG. 1 is a block diagram showing an illustrative implementation of a direct broadcast satellite system with a viewership data collection system in accordance with the teachings of the present invention.
- FIG. 2 is a block diagram showing an illustrative implementation of the set top box of FIG. 1 in accordance with the teachings of the present invention.
- FIG. 3 is a block diagram showing an illustrative implementation of a smartcard adapted for use in accordance with the teachings of the present invention.
- FIG. 4 is a flow diagram that illustrates the operation of the
smartcard 40 in accordance with the teachings of the present invention. - FIG. 5 is a block diagram illustrating the data processing operation of the present invention.
- FIG. 6 shows how viewership data is correlated to demographic data in accordance with the teachings of the present invention.
- Illustrative embodiments and exemplary applications will now be described with reference to the accompanying drawings to disclose the advantageous teachings of the present invention.
- While the present invention is described herein with reference to illustrative embodiments for particular applications, it should be understood that the invention is not limited thereto. Those having ordinary skill in the art and access to the teachings provided herein will recognize additional modifications, applications, and embodiments within the scope thereof and additional fields in which the present invention would be of significant utility.
- FIG. 1 is a block diagram showing an illustrative implementation of a direct broadcast satellite system with a viewership data collection system in accordance with the teachings of the present invention. As shown in FIG. 1, the
system 10 includes aprogram database 12. The program database provides program content, channel identification, date, time and other information relevant to the provision of direct broadcast satellite television programming as will be appreciated by those of ordinary skill in the art. Thedatabase 12 may be stored on a server or other suitable storage medium. Thedatabase 12 sends information to a pair of systems that, together, comprise aprogram data encoder 14. Theprogram data encoder 14 may be a proprietary security system which encodes program content with a proprietary algorithm for secure transmission and conditional access. Asmartcard command generator 16 formats authorization and other commands for smartcards discussed more fully below. Thesmartcard command generator 16 provides the commands necessary to authorize programming and authorize the data collection capability. - The program data and smartcard commands are multiplexed into a video stream at one of a number of
broadcast centers 18 and uplinked to one or moredirect broadcast satellites 20 in a manner well-known to those skilled in the art. In practice, multiple video and audio channels may be embedded into a single stream for a corresponding transponder on thesatellite 20. In addition, the satellite may have multiple (e.g., 34) transponders. Each transponder is adapted to receive a respective bit stream comprising, for example, 12 video channels and 20 audio channels and a separate copy of the smartcard commands. However, the uplinked streams share the smartcard commands. That is, the smartcard commands are identical on each stream. This assures that each end user receives the same command stream regardless of the transponder to which the user is tuned. - Thus, those skilled in the art will appreciate that, in the best mode, each stream is a stream of digital data which comprises ‘meta data’—program guide and channel ID data and conditional access data. The channels are ‘virtual’ inasmuch as the multiple channels are provided on a single carrier frequency. Channel ID data is embedded in the stream and parsed out on receipt. Those skilled in the art will appreciate that this is a significant departure from conventional viewership monitoring systems in which the separate channels are transmitted on separate carrier frequencies. Hence, conventional systems operate with decoders on separate analog ‘physical’, as opposed to virtual, channels. The use of virtual channel assignment allows for an inexpensive relocation of virtual channels to other carrier frequencies without necessitating a change in an associated reporting system.
- In the illustrative Direct to Home (DTH) direct broadcast satellite implementation, the uplinked streams are relayed via
satellite 20 to a number of home-basedsatellite antennas 22 to which a settop boxes 30 is connected. In the best mode, the settop box 30 is adapted to interface with asmartcard 40. As is well known in the art, the smartcard allow for the set top boxes to be upgraded inexpensively. - FIG. 2 is a block diagram showing an illustrative implementation of the set top box of FIG. 1 in accordance with the teachings of the present invention. The
box 30 includes a digital tuner/demodulator 32 which receives, downconverts and demodulates the satellite signal from thedish antenna 22. In the illustrative embodiment, the satellite signal is encoded in accordance with the DSS transport protocol. Thetuner demodulator 32 outputs a digital baseband signal to adata processor 34. Theprocessor 34 parses the digital baseband signal into, inter alia, its program content and channel ID streams in a conventional manner. The program content is forwarded to a conventional video/audio decompression unit 37 based on channel selections made by the user via auser interface 36. In accordance with the present teachings, the channel ID associated with the user's channel selections are forwarded to thesmartcard 40 via a smartcard hardware and software reader orinterface 35. - FIG. 3 is a block diagram showing an illustrative implementation of a smartcard adapted for use in accordance with the teachings of the present invention. As shown in FIG. 3, the
smartcard 40 includes aninterface 42 adapted to communicate with theinterface 35 of the set top box (illustrated in FIG. 2). In practice, the smartcard may be implemented in accordance with ISO standards 7810 and 7816 parts 1-3 entitled “Identification Cards-Integrated Circuit(s) Cards with Contacts”. Theinterface 42 effects communication between theprocessor 34 of the settop box 30 and aprocessor 44 on thesmartcard 40. Thesmartcard processor 44 receives and executes program instructions from a read-only memory (ROM) 46 and an electrically-erasable programmable read-only memory (EEPROM) 48 and stores data in EEPROM (48) and in arandom access memory 49. - FIG. 4 is a flow diagram that illustrates the operation of the
smartcard 40 in accordance with the teachings of the present invention. Atstep 1, the smartcard commands are parsed from the received baseband digital stream by theprocessor 34 of the set top box and sent to thesmartcard 40. The subscriber authorizations and attributes are stored in theEEPROM 48. Atstep 2, program attributes are parsed and send to the smartcard by theprocessor 34 of the settop box 30. In addition to channel ID information, the program attributes may include authorization to view a particular channel, parental ratings, and pay per view information. Atstep 3, theprocessor 44 of the smartcard compares the program attributes with the subscriber authorizations. If there is a match, atstep 4, thecard processor 44 generates a descrambling key and forwards the key to theset box processor 34 viainterface software 102. Theprocessor 34 then uses the key to descramble the selected program. If the attributes do not match, the card sends a message to the viewer via the set top box indicating that the channel is not available for viewing. - In accordance with the present teachings, at
step 5 viewership and pay-per-view callback data is communicated from theprocessor 44 of thesmartcard 40 to a data processing system 17 (shown in FIG. 1) via thesmartcard interface 35 andinterface software 102,processor 34 and a conventionaldialup modem 39 of the set top box, astandard phone line 31, anautomated callback system 50 and the smartcard command generator 16 (FIG. 1) on a time schedule. The callback system receives the phone call at a location relatively near to the settop box 30 and forwards the data from the phone call to thesmartcard command generator 16. Those skilled in the art will appreciate that the smartcard may be programmed to automatically send viewership data on the occurrence of an event, expiration of a time period or other trigger function such that a command may not be required. Timing information for the smartcard is encoded into the uplinked stream by the smartcard command generator and/or the program data encoder. - FIG. 5 is a block diagram illustrating the data processing operation of the present invention. As shown in FIG. 5, the
data processing system 17 receives program data from theprogram database 12, smartcard viewership data from thesmartcard command generator 18, and household demographic data from a customer service facility. The processing system combines this data in the form of reports and provides reports via auser interface 19. - FIG. 6 shows how viewership data is correlated to demographic data in accordance with the teachings of the present invention. As shown in FIG. 6, smartcard viewership data is correlated to demographic data via the smartcard ID number. The smartcard viewership data is correlated to the program data via the channel number, start time and program duration.
- Thus, the present invention has been described herein with reference to a particular embodiment for a particular application. Those having ordinary skill in the art and access to the present teachings will recognize additional modifications, applications and embodiments within the scope thereof.
- It is therefore intended by the appended claims to cover any and all such applications, modifications and embodiments within the scope of the present invention.
- Accordingly,
Claims (31)
1. A data collection system comprising:
first means for receiving a signal having multiple channels of program content and associated channel identification information, said first means including means for parsing said program content and channel identification information from said signal;
second means responsive to user input and said means for parsing for selecting channels of said program content for output; and
third means for monitoring the channels selected and providing viewership data with respect thereto, said viewership data including channel identification information.
2. The invention of claim 1 wherein said first, second and third means are disposed in a set top box.
3. The invention of claim 2 wherein said set top box is a direct broadcast satellite set top box.
4. The invention of claim 1 wherein said first means includes a tuner and a demodulator and a processor.
5. The invention of claim 1 wherein said second means includes a processor.
6. The invention of claim 5 wherein said signal includes virtual channel information.
7. The invention of claim 6 wherein said second means includes software adapted for execution by said processor to parse said virtual channel information from said received signal.
8. The invention of claim 7 further including means for storing said viewership data.
9. The invention of claim 8 wherein said means for storing includes a smartcard.
10. The invention of claim 1 further including means for storing said viewership data.
11. The invention of claim 10 wherein said means for storing includes a smartcard.
12. The invention of claim 1 further including means for selectively transmitting said viewership information.
13. The invention of claim 12 wherein said means for selectively transmitting includes a modem.
14. The invention of claim 1 wherein said third means includes a smartcard.
15. The invention of claim 1 further including means for processing said viewership information to provide demographic data with respect thereto.
16. A direct broadcast satellite system with automatic viewership reporting comprising:
first means for transmitting via satellite a signal having multiple channels of program content and associated channel identification information;
second means for receiving said signal;
third means for parsing said program content and channel identification information from said received signal;
fourth means responsive to user input and said means for parsing for selecting channels of said program content for output;
fifth means for monitoring the channels selected and providing viewership data with respect thereto, said viewership data including channel identification information; and
sixth means for reporting said viewership data.
17. The invention of claim 16 wherein said second, third and fourth means are disposed in a set top box.
18. The invention of claim 17 wherein said set top box is a direct broadcast satellite set top box.
19. The invention of claim 16 wherein said second means includes a tuner and a demodulator.
20. The invention of claim 16 wherein said third means includes a processor.
21. The invention of claim 20 wherein said signal includes virtual channel information.
22. The invention of claim 21 wherein said third means includes software adapted for execution by said processor to parse said virtual channel information from said received signal.
23. The invention of claim 22 further including means for storing said viewership data.
24. The invention of claim 23 wherein said means for storing includes a smartcard.
25. The invention of claim 16 further including means for storing said viewership data.
26. The invention of claim 25 wherein said means for storing includes a smartcard.
27. The invention of claim 16 wherein said fifth means includes a smartcard.
28. The invention of claim 16 wherein said sixth means includes means for selectively transmitting said viewership information.
29. The invention of claim 28 wherein said means for selectively transmitting includes a modem.
30. The invention of claim 16 further including means for processing said viewership information to provide demographic data with respect thereto.
31. A method for collecting viewership data including the steps of:
receiving a signal having multiple channels of program content and associated channel identification information;
parsing said program content and channel identification information from said signal;
selecting channels of said program content for output in response to user input and said parsing operation; and
monitoring the channels selected and providing viewership data with respect thereto, said viewership data including channel identification information.
Priority Applications (7)
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US10/408,898 US20040083485A1 (en) | 2002-10-25 | 2003-04-08 | Viewer data collection system and method for use in a direct broadcast satellite television network |
FR0312340A FR2846507B1 (en) | 2002-10-25 | 2003-10-22 | SYSTEM FOR COLLECTING TELEVISION AUDIENCE DATA |
MXPA03009674A MXPA03009674A (en) | 2002-10-25 | 2003-10-22 | Viewer data collection system and method for use in a direct broadcast satellite television network. |
ARP030103877A AR041706A1 (en) | 2002-10-25 | 2003-10-23 | TELEVIDING DATA COLLECTION SYSTEM AND METHOD FOR USE IN A DIRECT SATELLITE TELEVISION BROADCASTING NETWORK |
BR0304583-8A BR0304583A (en) | 2002-10-25 | 2003-10-24 | Data Collection System |
CN200310104361.2A CN1225119C (en) | 2002-10-25 | 2003-10-24 | Audience data collecting system and method for live broadcast satellite TV network |
US12/496,467 US8099749B2 (en) | 2002-10-25 | 2009-07-01 | Viewer data collection system and method for use in a direct broadcast satellite television network |
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US10/408,898 US20040083485A1 (en) | 2002-10-25 | 2003-04-08 | Viewer data collection system and method for use in a direct broadcast satellite television network |
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CN102339440A (en) * | 2010-07-21 | 2012-02-01 | 中兴通讯股份有限公司 | Live-broadcast reception data collecting method and system in internet protocol television (IPTV) reception audience investigation |
US9467738B2 (en) | 2013-12-23 | 2016-10-11 | Blutether Limited | Personal area network proxy service for video on demand systems |
US10638190B2 (en) | 2013-12-23 | 2020-04-28 | Blutether Limited | Personal area network proxy service for video systems |
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KR100709348B1 (en) * | 2005-02-17 | 2007-04-20 | 삼성전자주식회사 | Image refroducing apparatus for updating channel map and method of updating thereof |
US8612598B1 (en) | 2011-02-18 | 2013-12-17 | The Directv Group, Inc. | Method and system for ingesting content schedule data from an external source |
US8886674B1 (en) * | 2011-02-18 | 2014-11-11 | The Directv Group, Inc. | Method and system for entitling a user device to receive content from data from an external source |
AU2013203768B2 (en) * | 2013-03-07 | 2016-05-05 | The Nielsen Company (Us), Llc | Methods and apparatus to monitor media presentations |
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Also Published As
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CN1225119C (en) | 2005-10-26 |
MXPA03009674A (en) | 2004-07-16 |
US8099749B2 (en) | 2012-01-17 |
BR0304583A (en) | 2004-08-31 |
FR2846507A1 (en) | 2004-04-30 |
FR2846507B1 (en) | 2005-06-24 |
US20090271813A1 (en) | 2009-10-29 |
CN1499837A (en) | 2004-05-26 |
AR041706A1 (en) | 2005-05-26 |
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Owner name: THE DIRECTV GROUP, INC., CALIFORNIA Free format text: CHANGE OF NAME;ASSIGNOR:HUGHES ELECTRONICS CORPORATION;REEL/FRAME:027077/0739 Effective date: 20040316 |