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WO1986006239A1 - Procede et appareil de verification de la transmission d'un programme de television - Google Patents

Procede et appareil de verification de la transmission d'un programme de television Download PDF

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Publication number
WO1986006239A1
WO1986006239A1 PCT/US1985/001996 US8501996W WO8606239A1 WO 1986006239 A1 WO1986006239 A1 WO 1986006239A1 US 8501996 W US8501996 W US 8501996W WO 8606239 A1 WO8606239 A1 WO 8606239A1
Authority
WO
WIPO (PCT)
Prior art keywords
airings
information
channels
signals
programs
Prior art date
Application number
PCT/US1985/001996
Other languages
English (en)
Inventor
Burton L. Greenberg
Hillard L. Fitzkee
Original Assignee
Greenberg Burton L
Fitzkee Hillard L
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US06/476,915 external-priority patent/US4547804A/en
Application filed by Greenberg Burton L, Fitzkee Hillard L filed Critical Greenberg Burton L
Publication of WO1986006239A1 publication Critical patent/WO1986006239A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/12—Arrangements for observation, testing or troubleshooting
    • H04H20/14—Arrangements for observation, testing or troubleshooting for monitoring programmes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
    • H04H20/30—Arrangements for simultaneous broadcast of plural pieces of information by a single channel
    • H04H20/31—Arrangements for simultaneous broadcast of plural pieces of information by a single channel using in-band signals, e.g. subsonic or cue signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
    • H04H60/38—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space
    • H04H60/41—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space for identifying broadcast space, i.e. broadcast channels, broadcast stations or broadcast areas
    • H04H60/44—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space for identifying broadcast space, i.e. broadcast channels, broadcast stations or broadcast areas for identifying broadcast stations

Definitions

  • This invention relates generally to an improved method and apparatus for automatically identifying and verifying television broadcast programs.
  • Television broadcast programs are comprised essentially of first run or syndicated feature programs and commercials. Such broadcast programs are either performed live or prerecorded for airing at certain times for specific stations.
  • Commercials normally consist of a 15 second to 1 minute program which is inserted at various times during the viewing day by the broadcasting station according to contracts made with the commercial owner or advertising agency. This is referred to as buying television time spots and the broadcast of the commercial in the purchased time spot is referred to as a "bought airing".
  • the television station agrees to insert the commercial program in certain time periods specified in contract. From time to time, the television station then bills the buyer of the time spot for having aired the commercial.
  • a further characteristic of the current practice is that because auditing is not automated, there is a significant time delay in reporting and collating the audits. This delay impedes the advertiser from taking timely action to have problems corrected. Thus the advertiser may be unable to forestall repeated improper airings of a commercial.
  • Audio encoding (e.g., U.S. Patent No. 3,845,391 Crosby) has proven to be unsatisfactory for television broadcasting.
  • Ad Hoc committee On Television Broadcast Ancillary Signals Of The Joint Committee on Intersociety Coordination (published May, 1978), the Journal of the Society of Motion Picture and Television Engineers found the aforementioned audio program identification to be unreliable and to cause significant degradation of program signal quality.
  • one object of the present invention is to provide a novel and improved method and apparatus for automatic television broadcast program identification and verification or a plurality of channels which combines maximum sampling capability with fault tolerance.
  • Another object is to provide a novel and improved method and apparatus for automatic television broadcast program identification and verification that minimizes the amount of data processing required.
  • a still further object is to provide a novel and improved method and apparatus for automatic television broadcast program identification and verification which does not use the VBI.
  • the programs are transmitted at various times over a plurality of channels for reception within a geographical area referred generally to as a market area.
  • the transmitted composite signals are monitored by a primary monitoring system at a location within the market area and cyclically scanned at a predetermined repetition rate with each channel being sampled for a preselected time interval within each scanning cycle to detect the presence of an identification code on the line of the video information signal.
  • the preselected time interval is determined as a function of the number of channels being monitored and the repetition rate.
  • the identification codes are separated from the composite signals and the color burst and the audio and video signal quality are measured for each frame of all programs which include an identification code.
  • Verified airings information for the programs having identification codes recorded therein are generated and stored at the monitoring station.
  • the verified airings information includes for each transmission of each program information specifying: the identification code, the time, the duration, the channel, and audio, video, and color burst quality for each of the verified airings.
  • a central computer polls the local monitoring station and causes it to transmit the verified airings information to the central computer for comparison with bought airings information stored in the central computer.
  • a secondary monitoring system is provided for generating additional data about the trans ittal composite signals to be combined with that generated by the primary system to generate the verified airings information; alternatively, the secondary monitoring system is used to monitor cable channels.
  • the data recorded on the predetermined line further includes a code identifying the particular program and means are provided for incorporating the ' program identification information as part. of the verified airings information.
  • the final portion of the commercial is recorded locally at the monitoring station for verification and billing purposes.
  • FIGURE 1 is a block diagram of a video recording arrangement utilized in practicing the invention
  • FIGURE 2 is a block diagram of an arrangement for generating and combining an identification signal with a video signal
  • FIGURE 3 is a diagram, partly in block form, of a receiving station in accordance with the invention.
  • FIGURE 4 is a diagram, partly in clock form, of a receiving station in accordance with the invention.
  • FIGURE 5 is a block diagram of an arrangement for comparing a verification and reference signal
  • FIGURE 6 is a block diagram of an arrangement for storing the last portion of locally tagged commercials on a VCR.
  • a video camera 10 for generating a video signal having an informational content.
  • the informational content comprises program matter such as a feature, commercial or other form of information which is to be transmitted by a television station in a market area to a receiving station in the area.
  • the camera 10 includes means for generating a composite signal having a video information component and scanning control components.
  • the latter include horizontal and vertical synchronizing signal components and horizontal and vertical beam blanking components.
  • the latter components blank the electron beam in a cathode-ray tube at the receiving station during the retrace interval, or VBI, of the scanning electron beam.
  • the composite signal is transmitted at a rate as specified by RS-170 and RS-170A for black and white and color broadcasts respectively.
  • Phase Alternating Line (PAL) or Sequential Color with Memory (SECAM) may be used.
  • PAL Phase Alternating Line
  • SECAM Sequential Color with Memory
  • the beam is blanked by a vertical blanking signal and the beam retraces to restart a subsequent field.
  • the composite video signal is coupled from the video camera 10 to a video recorder 12.
  • the video information content of the program can thus be recorded on magnetic tape by the recorder 12, if so desired.
  • the video program if recorded, is copied at a dubbing studio. A number of copies of the program are made depending on the determined distribution requirements for the particular program.
  • the recorded program comprises a master tape which is loaded on a standard video tape playback apparatus 14 (commercially available from Ampex, Sony or RCA).
  • the video signal which is read from the tape by this machine is coupled via an encoder 16 to a video tape recorder 18.
  • the encoder 16 inserts a multibit identification code in the video portion of line 22 of each of fields 1 and 2.
  • Line 22 is the first full line in the active video area which normally would contain picture information. Use of this line is advantageous because it avoids the? use of the VBI thus obviating some of the objections of the television networks.
  • the identification code is an eight character alphanumeric digital ISCI code.
  • the information recorded on line 22 includes 9 bits of phase and code reference information which designates the line as containing an identification code. These are followed by the 8 alphanumeric characters ISCI identification code that uniquely identifies the commercial or program. Each character is encoded as an 8 bit byte one bit of which is not used. Ninth and tenth 8 bit characters are provided which are used in identifying local advertisers named at the end of a commercial and /or the name of the program in the case of commercials included in a syndicated TV program.
  • the name and addresses of local sources of a nationally advertized product are given at the end of a commercial.
  • the ninth character is a particular code that indicates that the commeroial includes such a local tag, and the tenth character indicates the length of the commercial. This information is used in the manner to be described hereafter to turn on a VCR to record the last 10 to 15 seconds of the commercial to record the local advertizer identification information for later verification and billing purposes.
  • Syndicated TV programs with some commercials already included are marketed to various local stations in different market areas and are broadcast at different times.
  • a two-character syndicated program identification code is recorded in the ninth and tenth character code locations of line 22. This information is decoded in the manner to be described hereinafter to identify the program containing the commercial. Following the ninth and tenth characters an eleventh character space is provided for an 8 bit cyclical redundancy check code used for error detection purposes.
  • the composite signal applied to the video recording apparatus 16 therefore includes an identification signal which identifies the video information.
  • This identification code is also supplied to the storage means 20 of a central computer 22.
  • the computer 22 also stores additional information referenced to the identification code, such as the name of the client on whose behalf the program is prepared, the name of the purchasers of the bought airings, and the date, time spot and direction of the bought airing.
  • Copies of the commercials thus recorded are supplied to various television stations around the country for transmission in particular market areas.
  • Different commercials, each having a unique identification code are supplied to television stations in a market area and are transmitted at various times over different communication channels for reception in the market area.
  • FIG. 3 illustrates three television sending stations 24, 26, and 28 which service a market area.
  • Composite signals modulate RF carrier signals and are broadcast by the stations 24, 26, and 28.
  • a monitoring receiving station 30 in the market area receives the different signals from the stations 24, 26, and 28.
  • a cable T.V. station 32 also receives the signals from stations 24, 26, and 28 by broadcast or by satellite communication.
  • the signals received by cable station 32 are amplified and transmitted over a cable transmission line 34 to the monitor station 30 as well as to other receiving stations in the market area.
  • the term "transmit" refers both to broadcasting and to transmission of composite signals over transmission lines such as the cable 34.
  • a broadcast signal which is received by the antenna 31 of the monitor receiver station 30, is coupled by a preamplifier 50 to an RF tuner bank 70 each of which is set to a different one of the channels being broadcast.
  • the video channel switch 52 showi ⁇ in the example of FIG. 4 switches sequentially among the tuners.
  • switch 52 could be..set to switch sequentially among tuners set to channels 2, 4, 5, 7, 9, and 11 in the metropolitan New York City, New York area.
  • tuner bank 70 and switch 52 can switch among more or fewer channels as required.
  • a suitable channel switch is available commercially from Channelmatic Inc., of Alpine, California.
  • the channel switch 52 switches sequentially among tuners of the tuner bank 70 at a rate for scanning each channel for a preselected fixed time interval chosen as a function of the number of channels being monitored ' over a predetermined time period.
  • the predetermined time period is chosen as one second, and the fixed time interval is determined by dividing the number of channels being monitored into one second. Different criteria may be established for selecting an appropriate predetermined time period, depending, for example, on the frame rate being received, the number of channels being monitored, etc. If six stations are being monitored and 30 frames per second are received at receiver station 30, the fixed time interval is 1/6 second, which corresponds to the time over which 5 frames containing 10 fields are received. Although 5 frames are received over the fixed time interval, something fewer than 5 frames are processed in search of the identifying code since the switch 52 is not necessarily synchronized with the received signal and the first and last fields may not be complete.
  • Controller 54 may be realized by a special purpose switching circuit or by a simple, off the shelf, programmable general purpose digital computer having a clock and a first register for receiving as an input the number of channels to be monitored.
  • a second register may then receive a number equal to the number of clock pulses generated by the computer in one second, divided by the contents of the first register, i.e. the number of channels being monitored. The result is that the number stored in the second register represents the number of clock pulses that must be counted before generating a signal to switch 52 to cause sequential switching. In effect, the number stored in the second register represents the fixed time interval for scanning a particular channel for the identity code.
  • controller 54 After signaling the end of the fixed time interval and signaling switch 52 to switch sequentially to the next channel, controller 54 is then automatically reset to count through the fixed time interval once again. Finally sequential controller 54 also outputs a signal identifying which channel is being monitored at a given moment. This may be realized by simply incrementing a register by one each time channel switching occurs and outputting a signal indicative of the stored number. This register could, for example, be reset each time the number stored equals the number of channels being monitored which was previously indicated as stated in controller 54.
  • the composite signal and the associated audio signal are coupled from switch 52 to a video/audio quality detector 56 for -sensing the level of the DC component of the signals and fo •»r generating « an output signal indicative of video and audio quality.
  • a presence detector of this type is commercially available from Channelmatic Inc., of Alpine, California. The detector 56 also detects the presence of the color burst.
  • the identification code, the channel identification, and an indication as to the quality of the color burst and the video and audio signals along with the time and date of reception are stored in the memory of a local computer means 62 as a verification signal.
  • the computer 62 there is stored by the computer 62 for each field received for which a identification code is detected by decoder 58.
  • the assembly of the verification signals is accomplished for each full frame within the preselected fixed time interval, which, if 6 channels are being monitored as in the example set out hereinbefore, is 1/6 second. If a different number of channels are being monitored, the preselected fixed time interval would be longer or shorter so long as it is long enough to include at least one full field.
  • the two character program identification code may be recorded in the ninth and tenth character location on line 22. In such a case those two characters are also stored in the memory of the computer 62 as part of the verification signal.
  • controller 54 automatically causes switch 52 to switch to the next tuner in sequence, restarting the identification process. The process is repeated for all the selected channels until it returns to the first monitored channel to start the identification process over at the beginning of the next cycle.
  • FIG. 4 depicts a secondary system for monitoring a cable input.
  • a pre-amplifier 50A, R/F tuner bank 70A, channel switch 52A, identi ication component detector 58A, video/audio quality detector 56A, and computer 62A are all substantially identical to the broadcast monitoring system just described.
  • the channel switch 52A is under the control of sequential controller 54 which also supplies the channel information to the computer 62A.
  • the secondary monitoring system is normally used for monitoring cable channels which may be the same or different as the broadcast channels being monitored by the primary system shown on the left hand side of FIG 4. If no cable channels are available at the monitoring station, the secondary, system may advantageously be used as a backup system. monitoring the same broadcast channels as the primary system. This has the significant advantages of pro ⁇ viding fault tolerant operation if the primary system should sustain a fault and of increasing the sampling rate by a factor of 2 when both systems are working.
  • the cable pickup 34 When operating in the backup mode, the cable pickup 34 would be replaced by a broadcast signal receiving antenna.
  • sequential controller 54 is, for example, sequencing through the New York channels in the sequence, channel 2, 4, 5, 7, 9, and 11, the backup path would sequence through the channels in the ' order 7, 9, 11, 2, 4, and 5.
  • This allows the sampling of twice the number of frames per channel during each cycle thereby increasing verification accuracy. It is preferred that the order of sampling in the second ⁇ ary system be as close as possible to 180° out of phase with that of the primary system so that success-; ive samples of each channel are evenly spaced in time.
  • the computers 62 and 62A periodically (preferably once per hour) process the verification signals data.
  • the verification signals are processed -to identify "valid segments" which normally should correspond to the reception of a commercial on a channel. A valid segment continues for so long as no more than one second passes between successive decodings of the same ISCI identification code on line 22 of a channel. If a commercial on one channel ends while the system is scanning another channel. the system becomes aware of it only when the first channel is scanned again on the next cycle.
  • the identification code, starting time, duration, channel switch position, and duration of valid audio, video, and color burst signals are recorded in another portion of the memory of the computers 62 and 62A as verified airings information. If the two character program identification code is also stored as part of the verification signal, the code is also recorded as part of the verified, airings information.
  • the verification signal stored in its memory are also transmitted to the computer 62 before each data compression sequence and are interleaved with the primary systems verification signals in the memory of computer 62.
  • the verified airings information generated in the memory of computer 62 is based on twice the number of samples as the verified airings information in computer 62A.
  • the primary and secondary systems may contain different verified airings information.
  • the verified airing information in the secondary computer 62A is transmitted to the primary computer 62 to simplify the polling of the monitoring station as will be explained more fully below.
  • FIG. 5 illustrates communication between the central computer 22 and computers 62 and 62A. Each of these computers is coupled via modems 64, 66,and 66A to a telephone transmission line 68.
  • the central computer 22 sends an inquiry signal to computer 62 via modem 66 which causes the computer 62 to transmit the verified airings information stored in its memory to the central computer 22 along with status informa ⁇ tion concerning the remote station 30.
  • the verified airings information includes the data collected by the secondary system either in the form of cable channel verified airings information previously transmitted from computer 62A to computer 62 if the secondary system is monitoring cable channels, or, of verified airings information based on twice the number of samples if the secondary system is operating in the backup mode.
  • the central computer 22 polls the secondary computer 62A through modem 66A. In this case either cable channel verified airings information or broadcast channel verified airings is transmitted to the central computer 22 depending on whether the secondary system is monitoring cable channels or acting as a backup respectively. In the second case no data is lost when the secondary system is operating in the backup mode since both the primary and secondary computers would normally be storing the same verified airings information.
  • the central computer 22 compares the verified airings information from the computer 62 or 62A with the stored bought airing reference signals thus ver ⁇ ifying the transmission and quality of the transmitted signals. Bought airing reference signals stored in the central compute 22 for which no verified airing information is received are indicated not having been ' transmitted, so that appropriate follow-up action can be taken. Only one monitoring station covering a single market area has been illustrated in FIGS. 3 and 4.
  • the central computer 22 normally sequentially querys receiving stations in a number of different market areas, and thus centrally correlates information for the transmission of programs throughout the country.
  • the computer 22 commands a second channel switch 72 to switch to the channel transmitting the locally tagged commercial.
  • the tenth character on line 22 in such a case specifies the duration of the commercial.
  • the computer 62 commands the VCR 74 to turn on to record the last 10 to 15 seconds of the commercial.
  • the computer 62 commands the VCR.to turn off again, the VCR therefore stores in sequence the last 10 to 15 seconds of all locally tagged commercials monitored by the system in the market area.
  • this information identifies the local advertisers whose names and addresses are appended at the end of commercials for verification and billing purposes.
  • the channel switch 72 may be separate or may be included as part of the VCR 74.
  • the method and apparatus thus described are advantageous in that comprehensive auditing of transmitted television commercials is automatically accomplished.
  • the automatic auditing is accomplished economically and rapidly thus enabling prompt follow-up on faulty or incorrect transmissions and enhancing the billing and payment for aired time.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)

Abstract

Un procédé et un appareil permettent de vérifier si des programmes de télévision ayant un code numérique d'identification enregistré sur une ligne de balayage présélectionnée en général invisible pour le téléspectateur sont correctement transmis. Une pluralité de canaux de télévision sont contrôlés automatiquement et simultanément par un système primaire de contrôle (50, 70, 52, 56, 58) à un endroit (30) situé dans la zone de réception, et des programmes codés transmis sont identifiés, minutés et évalués pour ce qui est de la qualité de leurs signaux audio et vidéo. Les informations générées sont localement enregistrées afin d'être comparées par la suite avec des informations centralement enregistrées (62) concernant les programmes qui auraient dû être transmis. Chaque canal est contrôlé successivement pendant une période fixe présélectionnée qui dépend du nombre de canaux à contrôler sous la commande d'une unité séquentielle programmable de commande (54). Un système secondaire de contrôle (50A, 70A, 52A, 6A, 58A) sert de système de réserve ou de contrôle de canaux de télévision par câble. Un enregistreur (74) sensible à un code enregistré dans les signaux du programme enregistre localement la dernière partie du programme.
PCT/US1985/001996 1983-03-21 1985-10-14 Procede et appareil de verification de la transmission d'un programme de television WO1986006239A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US06/476,915 US4547804A (en) 1983-03-21 1983-03-21 Method and apparatus for the automatic identification and verification of commercial broadcast programs
US72332585A 1985-04-15 1985-04-15
US723,325 1985-04-15

Publications (1)

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WO1986006239A1 true WO1986006239A1 (fr) 1986-10-23

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PCT/US1985/001996 WO1986006239A1 (fr) 1983-03-21 1985-10-14 Procede et appareil de verification de la transmission d'un programme de television

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EP (1) EP0222772A4 (fr)
WO (1) WO1986006239A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0363847A1 (fr) * 1988-10-11 1990-04-18 A.C. Nielsen Company Système à substitution d'information vidéo par une autre information vidéo
EP0347401A3 (fr) * 1988-06-14 1991-04-03 Robert A. Kramer Méthode et système pour l'identification et la vérification de segments de programmes de télévision et de radio diffusés
FR2718917A1 (fr) * 1994-04-14 1995-10-20 Marchand Renaud Procédé d'identification de sources d'image à des fins d'audimétrie et dispositif pour sa mise en Óoeuvre.
EP0651570A3 (fr) * 1993-10-27 1995-11-29 Edico Srl Récepteur de télévision amélioré avec une minuterie.
NL1003832C2 (nl) * 1996-08-20 1998-02-26 Media Exposure B V Werkwijze voor de geautomatiseerde on-line registratie en controle van de wijze van uitvoering van uitgezonden reclame-spots op Nederlandse en buitenlandse televisie-zenders.
GB2428843A (en) * 2005-07-26 2007-02-07 Ai Satcom Ltd Monitoring a plurality of channels
WO2010058256A1 (fr) * 2008-11-21 2010-05-27 Media Instruments Sa Production de signatures de référence à partir de contenu de diffusion
US10785534B2 (en) 2016-11-04 2020-09-22 The Nielsen Company (Us), Llc Methods and apparatus to measure audience composition and recruit audience measurement panelists
US10885543B1 (en) 2006-12-29 2021-01-05 The Nielsen Company (Us), Llc Systems and methods to pre-scale media content to facilitate audience measurement

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AU4066300A (en) † 1999-03-29 2000-10-16 Gotuit Media, Inc. Electronic music and program storage, recognition, management and playback system

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US4547804A (en) * 1983-03-21 1985-10-15 Greenberg Burton L Method and apparatus for the automatic identification and verification of commercial broadcast programs

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US3919479A (en) * 1972-09-21 1975-11-11 First National Bank Of Boston Broadcast signal identification system
US4230990A (en) * 1979-03-16 1980-10-28 Lert John G Jr Broadcast program identification method and system
US4230990C1 (en) * 1979-03-16 2002-04-09 John G Lert Jr Broadcast program identification method and system
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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0347401A3 (fr) * 1988-06-14 1991-04-03 Robert A. Kramer Méthode et système pour l'identification et la vérification de segments de programmes de télévision et de radio diffusés
EP0363847A1 (fr) * 1988-10-11 1990-04-18 A.C. Nielsen Company Système à substitution d'information vidéo par une autre information vidéo
EP0651570A3 (fr) * 1993-10-27 1995-11-29 Edico Srl Récepteur de télévision amélioré avec une minuterie.
FR2718917A1 (fr) * 1994-04-14 1995-10-20 Marchand Renaud Procédé d'identification de sources d'image à des fins d'audimétrie et dispositif pour sa mise en Óoeuvre.
WO1995028778A1 (fr) * 1994-04-14 1995-10-26 Renaud Marchand Procede d'identification de sources d'image a des fins de mesure d'audience et dispositif pour sa mise en ×uvre
NL1003832C2 (nl) * 1996-08-20 1998-02-26 Media Exposure B V Werkwijze voor de geautomatiseerde on-line registratie en controle van de wijze van uitvoering van uitgezonden reclame-spots op Nederlandse en buitenlandse televisie-zenders.
EP0831609A1 (fr) * 1996-08-20 1998-03-25 Media Exposure B.V. Méthode pour l'enregistrement en-ligne automatisé et la vérification de la transmission de messages publicitaires sur les réseaux néerlandais et étrangers
GB2428843B (en) * 2005-07-26 2010-09-15 Ai Satcom Ltd System and method for monitoring a plurality of channels
GB2428843A (en) * 2005-07-26 2007-02-07 Ai Satcom Ltd Monitoring a plurality of channels
US10885543B1 (en) 2006-12-29 2021-01-05 The Nielsen Company (Us), Llc Systems and methods to pre-scale media content to facilitate audience measurement
US11568439B2 (en) 2006-12-29 2023-01-31 The Nielsen Company (Us), Llc Systems and methods to pre-scale media content to facilitate audience measurement
US11928707B2 (en) 2006-12-29 2024-03-12 The Nielsen Company (Us), Llc Systems and methods to pre-scale media content to facilitate audience measurement
US8539520B2 (en) 2008-11-21 2013-09-17 The Nielsen Company (Us), Llc Audience measurement apparatus, system and method
WO2010058256A1 (fr) * 2008-11-21 2010-05-27 Media Instruments Sa Production de signatures de référence à partir de contenu de diffusion
US10785534B2 (en) 2016-11-04 2020-09-22 The Nielsen Company (Us), Llc Methods and apparatus to measure audience composition and recruit audience measurement panelists
US11252470B2 (en) 2016-11-04 2022-02-15 The Nielsen Company (Us), Llc Methods and apparatus to measure audience composition and recruit audience measurement panelists
US11924508B2 (en) 2016-11-04 2024-03-05 The Nielsen Company (Us), Llc Methods and apparatus to measure audience composition and recruit audience measurement panelists

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Publication number Publication date
EP0222772A1 (fr) 1987-05-27
EP0222772A4 (fr) 1987-09-08

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