JP2004320421A - Audience data collection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize an audience data collection device which easily acquires audience data corresponding to various viewing forms. <P>SOLUTION: A PID filtering setting method for TS (transport stream) packets sent to a video decoder 106, an audio decoder 107, and a recorder 108 is analyzed in a TS decoder 105 for filtering TS packets of digital TV broadcast signals in a TS form, so that viewing forms such as real-time viewing, recording one program while viewing another, chasing reproduction, and viewing a recorded program are discriminated to collect more detailed audience data. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a viewing data collection device that acquires viewing data of digital television broadcasting.
[0002]
[Prior art]
Conventionally, a TV broadcast audience rating survey proposes a program viewing number information management device that counts both real-time viewing and time-shift viewing as viewing numbers. (For example, Patent Document 1)
[0003]
[Patent Document 1]
JP-A-2002-369225 (page 4, FIG. 4)
[0004]
[Problems to be solved by the invention]
The technique of Patent Literature 1 described above can obtain only viewing data of only real-time viewing and time-shift viewing, and there are insufficient viewing data for various viewing modes.
[0005]
An object of the present invention is to provide a viewing data collection device capable of supporting various viewing modes.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, a viewing data collecting apparatus according to claim 1 of the present invention collects viewing data of a digital TV broadcast signal broadcasted in a transport stream format, and comprises: And a recording unit for recording information on the viewing mode determined by the determining unit.
[0007]
Further, it collects viewing data of a digital television broadcast signal broadcasted in a transport stream format, and includes a discriminating unit for discriminating a viewing mode of the television broadcast signal, and information of the viewing mode discriminated by the discriminating unit. Recording means for recording, and transmission means for transmitting the information of the viewing mode recorded in the recording means to a viewing data collection center for counting audience ratings to a network.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic configuration diagram of a digital broadcast receiver according to one embodiment of the present invention. The digital television broadcast signal received by the antenna 101 is selected by a tuner 102, a transport stream (TS) composed of a plurality of programs is extracted by a demodulation unit 103, and the transport stream is multiplied by a descrambler 104. Release the scrambled. A transport stream is input to a TS (transport stream) decoding unit 105, a user selects a program for which channel selection has been instructed, sends a video packet to a video decoder 106, sends an audio packet to an audio decoder 107, and By performing the audio decoding process, a video output and an audio output can be obtained.
[0009]
When a recording instruction is given from the user, the program designated by the viewer is stored in the recording device 108 in the form of a transport stream.
FIG. 2 shows a packet configuration of the transport stream. The transport stream is a stream in which fixed-length packets of 188 bytes are multiplexed. The packet type includes video data, audio data, program information, and the like. The packet type can be identified by a PID (packet identifier) attached to the header of each packet.
[0010]
FIG. 3 shows an example of the internal configuration of the TS decoder 105. The TS decoder 105 includes a plurality of PID filters 311 to 31n for filtering TS packets. In the case of this example, section filters 321 and 322 are provided at the subsequent stage of the PID filter 313.
[0011]
A TS packet having the same PID as the PID set in the PID filter 311 in the input packet header of the trans stream is filtered by the PID filter 311 and output to the TS output 331. A TS packet having the same PID as the PID set in the PID filter 312 is filtered by the PID filter 312 and output to the TS output 332.
[0012]
The section filters 321 and 322 filter section packets. Here, a section is data in a section format having a section header and transmitted for transmitting program information and the like in a transport stream. The section filter filters the section packet by comparing the table ID written in the section header.
[0013]
Generally, a section packet is often subjected to a section filter for a packet that has been filtered by a PID filter. Since the video and audio packets are not in the section format, only the PID filtering is performed to extract the packets necessary for the video decoder or the audio decoder. Since the program information is transmitted in a section format, it is extracted by a section filter.
[0014]
By setting the PID of the TS packet stored in the recording device in the TS decoding unit 105, a desired program can be recorded in the recording device. When the program recorded in the recording device 108 is reproduced, the stream is sent to the TS decoding unit 105, and the recorded program can be viewed by setting the video and audio PID filters.
[0015]
Here, a method of setting the PID filter of the TS decoding unit 105 for each viewing mode will be described.
First, in the case of real-time viewing only, a video PID value for viewing is set to the PID filter 311 and an audio PID value is set to the PID filter 312 in order to send a stream to the video decoder 106 and the audio decoder 107.
[0016]
When recording a counter program while watching, in addition to setting the PID values of the PID filters 311 and 312, the video PID value for the stream to be recorded in the recording device 108 is set in the PID filter 314, and the audio PID value is set. Set in the PID filter 315. At this time, the viewing PID value and the recording PID value are different because the programs are different.
[0017]
In the case of the chasing playback (viewing the recorded program with a staggered time), the setting method of the PID filter is the same as that of the counterprogram recording, but the PID values of the viewing PID filter 311 and the recording PID filter 314 are different. The PID values for the viewing PID filter 312 and the recording PID filter 315 are the same.
[0018]
When viewing the recorded program, the stream is read from the recording device 108 and input to the TS decoding unit 105, and the video and audio PID values of the stream stored in the recording device 108 are set and viewed.
[0019]
Generally, since the PID filter setting of the TS decoding unit 105 is implemented by software, the above-described PID filter setting method for each viewing mode can be detected by software. FIG. 4 shows a flowchart of the viewing mode determination.
[0020]
If a PID filter for on-air viewing is set (S1) and a PID filter for storage of the recording device is not set, it can be determined that the viewing is real-time (S2). In step S1, when the PID filter for on-air viewing is not set and the PID filter for program viewing from the recording device is set, it can be determined that the user is viewing the recorded program (S3).
[0021]
If a PID filter for on-air viewing is set in step S1 and a PID filter for storage in the recording device is set in step S2, and if the PID setting values of both are the same in step S4, it is determined that chase reproduction is being performed. it can. In step S1, a PID filter for on-air viewing is set, and in step S2, a PID filter for storing a recording device is set. In step S4, if the PID setting values of the two are different, it is determined that the counterprogram is being recorded. it can.
[0022]
Since the setting of the PID filter is performed by the above software, time data at the time of setting can be obtained with high accuracy. The time during which the program is being viewed is from the time when the PID filter for viewing is set to the time when the PID filter is changed.
[0023]
FIG. 5 shows a format example of the viewing data. The viewing channel, the viewing start time, the viewing end time, the viewing mode, and the channel in the case of recording the counterprogram are recorded. The viewing start time and the viewing end time are times when the PID filter setting is performed, and have an accuracy of seconds. The time information when the chasing playback is performed records the start and stop times of recording so that the program to be viewed can be determined.
[0024]
FIG. 6 shows an example in which a program name of a program viewed or recorded by a user is recorded as viewing data. In a section packet, a packet called an EIT (Event Information Table) describes information about the program such as a program name, a broadcast date and time, and a description of the contents.
[0025]
The structure of the EIT will be described with reference to FIG. The event_id describes the ID of the target event (program), the start_time describes the program start time (hours, minutes, and seconds) of the target event, and the duration describes the program length (hours, minutes, and seconds) of the target event. Descriptor () describes the program name of the target event. The digital broadcast receiver filters the EIT section in the TS decoding unit 105, stores the EIT section inside the receiver, and analyzes the contents, so that the program name of the program that the user is viewing or recording is recorded in the viewing data. it can.
[0026]
In this embodiment, it is possible to easily and easily acquire viewing data for different viewing modes such as real-time viewing, chasing playback, viewing while recording a counterprogram, and viewing a recorded program.
[0027]
FIG. 8 is a configuration diagram for explaining another embodiment of the present invention. In this embodiment, the viewing data is transmitted to the viewing data totaling center, and the viewing data can be transmitted in real time using a network as a means for transmitting the viewing data.
[0028]
In order to transmit viewing data using a network (Internet) 300, the digital broadcast receiver 100 has a built-in network transmission interface unit 110, and the viewing data aggregation center 200 has a network reception interface unit 201. The viewing data shown in FIGS. 5 and 6 in which the viewing mode is determined based on the PID filtering setting method of the TS decoding unit 105 is stored in the viewing data storage unit 109, and is transmitted via the network transmission interface unit 121 at predetermined time intervals. The viewing data is transmitted to the network 300, and the viewing data collection center receives the viewing data from the network reception interface unit 201, and is sent to the viewing data collection unit 202 to be processed into information according to the purpose such as a rating. Since the viewing data serving as the processing source describes the viewing mode of the user, it can be processed into information reflecting the degree of interest of the user in the program.
[0029]
For example, if you are recording a back program, you can see that the user you are watching is more interested in the program you are recording than the program you are recording, and if you are chasing, it is faster than playing it after recording the program It is understood that the user wants to watch, that is, the user is interested in the program. Further, when the viewpoint is shifted to the user, it is possible to infer the user's preference from the viewing mode.
[0030]
In this embodiment, it is possible to obtain a real-time audience rating by collecting viewing data from a receiver viewing or recording a program through the Internet. Also, since the audience rating can be known during the broadcast of the program, when the audience rating of the program is poor, it is possible for the program sponsor to take measures such as advertising the program viewing on the Internet. Furthermore, by collecting the viewing data from all the receivers who are viewing, a more reliable rating than the statistical rating can be obtained.
[0031]
【The invention's effect】
As described above, according to the digital broadcast receiver of the present invention, the viewing data can be highly accurate for different viewing modes such as real-time viewing, chase playback, viewing while recording a back program, and viewing a recorded program. It is possible to provide a viewing data collection device which can be easily obtained by using the above.
[Brief description of the drawings]
FIG. 1 is a configuration diagram for describing an embodiment of the present invention.
FIG. 2 is an explanatory diagram for describing a configuration of a transport stream.
FIG. 3 is an internal configuration diagram of a TS decoding unit in FIG. 1;
FIG. 4 is a flowchart for explaining viewing mode determination according to the present invention.
FIG. 5 is an explanatory diagram for describing an example of a viewing data format according to the present invention.
FIG. 6 is an explanatory diagram for describing an example of a viewing data format according to the present invention.
FIG. 7 is an explanatory diagram for describing an EIT packet structure.
FIG. 8 is a configuration diagram for explaining another embodiment of the present invention.
[Explanation of symbols]
100 Digital broadcast receiver 200 Viewing data totaling center 300 Network network 101 Antenna 102 Tuner 103 Demodulator 104 Descrambler 105 TS decoder 106 Video decoder 107 Audio decoder 108 Recording device 109 Viewing Data storage unit 110 Network transmission interface unit 201 Network reception interface unit 202 Viewing data aggregation unit

Claims (6)

In a viewing data collection device for collecting viewing data of a digital television broadcast signal broadcast in a transport stream format,
Determining means for determining the viewing mode of the television broadcast signal;
Recording means for recording information on the viewing mode determined by the determination means. 2. The viewing data collection device according to claim 1, further comprising a display unit that displays the recorded viewing mode. 2. The viewing mode according to claim 1, wherein the determination unit determines a viewing mode by analyzing a set value of a PID value included in the transport stream and a PID (packet identifier) value of a plurality of PID filters. Viewing data collection device. 2. The viewing data collection device according to claim 1, wherein program information based on program start and end times or viewing channel information is recorded for the viewing mode information. 2. The viewing data collection device according to claim 1, wherein the viewing mode is at least on-air viewing, chasing playback, and recording of a counterprogram. In a viewing data collection device for collecting viewing data of a digital television broadcast signal broadcast in a transport stream format,
Determining means for determining the viewing mode of the television broadcast signal;
Recording means for recording information of the viewing mode determined by the determination means,
A viewing data acquisition device, comprising: a transmission unit that transmits, via a network, the viewing mode information recorded in the recording unit to a viewing data aggregation center that aggregates audience ratings.

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