JP2022156960A - Stream viewing analysis system, stream viewing analysis method, and program - Google Patents

Abstract

To provide a stream viewing analysis system, a stream viewing analysis method, and a program that can appropriately evaluate the viewing state, that is, the contact state, when the same stream as a broadcast stream is transmitted as an IP stream.SOLUTION: A determination unit 205 of an IP receiving terminal 200 identifies and determines a stream reproduced by a reproducing unit 204 of the IP receiving terminal 200, and calculates an IP time difference which is a time difference between a viewing time of the stream and a transmission reference time (broadcast time), and performs live viewing determination on the basis of the IP time difference.SELECTED DRAWING: Figure 1

Description

The present invention is a stream viewing analysis system that analyzes the entire viewing of a stream in stream transmission in which broadcast stream transmission for transmitting a stream via broadcasting and IP stream transmission for transmitting the stream via a network are performed. Regarding.

Conventionally, as this type of IP stream transmission system, as shown in Patent Document 1 below, a broadcasting server that distributes scheduled broadcast content associated with broadcast times communicates with a plurality of terminals that receive the scheduled broadcast content. In a broadcasting system connected via the Internet, which is a network, a broadcasting server transmits scheduled broadcast content before or after the broadcast time in response to a request from a terminal processing unit of a terminal, thereby enabling time-lag transmission. ing.

JP 2020-65137 A

In such a conventional IP stream transmission system, the same stream as the broadcast stream is transmitted with a time difference different from the broadcast time (not only the time difference (delay) in transmission (sending), but also the traffic load due to the characteristics of the network). (due to variations in distribution delays, network capacity variations, transmission volume variations due to differences in image quality, buffers during playback, playback variations and delays due to the performance of IP receiving terminals), viewing timing is inconsistent. Therefore, it is desired to grasp the actual state of viewing, that is, the actual state of contact as the same stream.

In particular, in many cases, the same stream is transmitted as an IP stream with a delay from the broadcast time, so it is desired to appropriately evaluate the stream by treating it in the same way as the broadcast stream.

In view of the above circumstances, the present invention provides a stream viewing analysis system and a stream viewing analysis method that can appropriately evaluate the viewing status, that is, the contact status, when the same stream as the broadcast stream is transmitted as an IP stream. and to provide programs.

A stream viewing analysis system of a first invention analyzes viewing of a stream in stream transmission in which broadcast stream transmission for transmitting the stream via broadcasting and IP stream transmission for transmitting the stream via a network are performed. In the stream viewing analysis system,
an IP stream viewing time acquisition unit that acquires an IP stream viewing time, which is a viewing time of the stream based on an internal clock of the IP stream receiving means, from the IP stream receiving means that receives the stream via the network;
an IP time difference calculation unit that calculates an IP time difference, which is a difference between a transmission reference time in the broadcasting of the stream and the IP stream viewing time acquired by the IP stream viewing time acquisition unit;
A viewing determination unit that determines whether the IP time difference calculated by the IP time difference calculation unit falls within a predetermined determination threshold value.

According to the stream viewing analysis system of the first invention, the IP time difference, which is the difference between the viewing time in the IP stream receiving means and the transmission reference time (for example, broadcast time), is calculated for the IP stream.

By determining viewing of the stream whose IP time difference is in the range of a predetermined determination threshold value, for example, it is possible to perform determination equivalent to live viewing or time-shifted viewing of a broadcast stream. It is possible to grasp the actual viewing situation treated in the same way.

As described above, according to the stream viewing analysis system of the first invention, when the same stream as the broadcast stream is transmitted as the IP stream, the viewing state, that is, the contact state can be appropriately evaluated.

The stream viewing analysis system of the second invention is, in the first invention,
the IP stream viewing time acquisition unit acquires an IP stream viewing time including a viewing start time of the stream based on an internal clock of the IP stream receiving means;
The IP time difference calculation unit is characterized by calculating the IP time difference based on viewing start time of the stream.

According to the stream viewing analysis system of the second invention, the viewing start time is used as a reference when calculating the IP time difference. That is, the IP time difference is calculated as the difference between the viewing start time of the viewing time in the IP stream receiving means and the transmission reference time (broadcast start time).

Then, the IP time difference can be easily calculated based on the viewing start time and is in line with the actual viewing situation, and the viewing of the stream whose IP time difference falls within a predetermined determination threshold can be easily determined.

As described above, according to the stream viewing analysis system of the second invention, when the same stream as the broadcast stream is transmitted as the IP stream, the viewing state, that is, the contact state can be easily and appropriately evaluated.

A stream viewing analysis system of a third invention, in the first or second invention,
When the IP time difference is smaller than the first threshold, the viewing determination unit adopts the time of the internal clock of the IP stream receiving means for the IP time difference, and when the IP time difference is greater than the first threshold, If it is smaller than a second threshold, which is larger than the first threshold, the transmission reference time is adopted, and the live viewing of the stream is determined and tabulated.

According to the stream viewing analysis system of the third aspect of the invention, by setting the first threshold, the time difference between the stream transmission reference time and the IP stream viewing time is within a range that can be considered to be approximately the same (for example, the first threshold is several seconds). ) can be set. In this case (when the time difference is smaller than the first threshold), it can be determined as live viewing based on the internal clock of the IP stream receiving means.

Also, by setting the second threshold, the time difference between the stream transmission reference time and the IP stream viewing time is within a range in which it can be assumed that the viewing time is almost the same although there is a slight time difference (for example, the second threshold minutes) can be set. In this case (when the time difference is greater than the first threshold and less than the second threshold), the transmission reference time (broadcast time) can be used as a reference, and live viewing can be determined without being determined as a time shift.

As described above, according to the stream viewing analysis system of the third invention, when the same stream as the broadcast stream is transmitted as an IP stream, it is possible to appropriately evaluate the actual viewing status as to whether or not the stream is live viewing.

A stream viewing analysis system of a fourth invention, in any one of the first to third inventions,
A broadcast stream viewing time acquiring unit for acquiring a broadcast stream viewing time, which is a viewing time of the stream based on an internal clock of the broadcast stream receiving means, from the broadcast stream receiving means for receiving the stream via the broadcasting. Characterized by

According to the stream viewing analysis system of the fourth invention, the broadcast stream viewing time, which is the stream viewing time based on the internal clock of the broadcast stream receiving means, is obtained. Therefore, it is possible to refer to the broadcast stream viewing time.

As a result, according to the stream viewing analysis system of the fourth invention, when the same stream as the broadcast stream is transmitted as an IP stream, the viewing state, that is, the contact state can be appropriately determined by referring to the broadcast stream viewing time. can be evaluated.

The stream viewing analysis system of the fifth invention, in the fourth invention,
a broadcast time difference calculation unit that calculates a broadcast time difference, which is a difference between a transmission reference time in broadcasting the stream and the broadcast stream viewing time acquired by the broadcast stream viewing time acquisition unit;
The viewing determination unit determines whether the broadcast time difference calculated by the broadcast time difference calculation unit falls within the range of the predetermined determination threshold.

According to the stream viewing analysis system of the fifth invention, the IP time difference, which is the difference between the viewing time in the broadcast stream receiving means and the transmission reference time (for example, the broadcasting time), is calculated for the broadcast stream.

Then, by judging viewing of the stream whose broadcast time difference falls within the range of a predetermined determination threshold value, viewing of the stream whose broadcast time difference and IP time difference fall within the range of the predetermined determination threshold value is determined as a time difference of the same quality. It is possible to treat the IP stream and the broadcast stream in the same manner by making the determination of .

As described above, according to the stream viewing analysis system of the fifth invention, when the same stream as the broadcast stream is transmitted as the IP stream, the viewing state, that is, the contact state, is appropriately evaluated based on the same standard. be able to.

The stream viewing analysis system of the sixth invention, in the fifth invention,
The broadcast stream viewing time acquisition unit acquires a broadcast stream viewing time including a viewing start time of the stream based on an internal clock of the broadcast stream receiving means,
The broadcast time difference calculation unit is characterized by calculating the broadcast time difference based on viewing start time of the stream.

According to the stream viewing analysis system of the sixth invention, the viewing start time is used as a reference when calculating the broadcast time difference. That is, the broadcast time difference is calculated as the difference between the viewing start time of the viewing time in the broadcast stream receiving means and the transmission reference time (broadcast start time).

Then, the service time difference can be calculated simply and in line with the actual viewing situation with the viewing start time as a reference, and the viewing of the stream whose broadcast time difference falls within the predetermined determination threshold can be easily determined.

In addition, by calculating both the IP time difference and the broadcast time difference based on the viewing start time, the IP time difference and the broadcast time difference are assumed to be the same time difference, and the time difference is within the range of a predetermined determination threshold value. , the IP stream and the broadcast stream can be handled in the same way.

As described above, according to the stream viewing analysis system of the sixth invention, when the same stream as the broadcast stream is transmitted as the IP stream, the viewing status, that is, the contact status can be easily and appropriately determined based on the same standard. can be evaluated.

A stream viewing analysis system of a seventh invention, in the fifth or sixth invention,
The viewing determination unit adopts the internal clock of the broadcast stream receiving means for the broadcast time difference when the broadcast time difference is smaller than the first threshold, and when the broadcast time difference is greater than the first threshold, the first If it is smaller than a second threshold, which is larger than the threshold, by adopting the transmission reference time, these are counted as live viewing of the stream.

According to the stream viewing analysis system of the sixth aspect of the invention, by setting the first threshold, the time difference between the stream transmission reference time and the broadcast stream viewing time is within a range that can be regarded as almost simultaneous (for example, the first threshold is several seconds). ) can be set. In this case (when the time difference is smaller than the first threshold value), it is possible to determine live viewing based on the internal clock of the broadcast stream receiving means.

In addition, by setting the second threshold, the time difference between the stream transmission reference time and the broadcast stream viewing time is within a range in which it can be assumed that viewing is almost at the same time although there is a slight time difference (for example, the second threshold minutes) can be set. In this case (when the time difference is greater than the first threshold and less than the second threshold), the transmission reference time (broadcast time) can be used as a reference, and live viewing can be determined without being determined as a time shift.

In addition, by making determinations using the same first threshold and second threshold for both the broadcast time difference and the IP time difference, when the same stream as the broadcast stream is transmitted as the IP stream, these can be live-streamed on the same basis. Viewing decisions can be made.

As described above, according to the stream viewing analysis system of the seventh invention, when the same stream as a broadcast stream is transmitted as an IP stream, it is possible to appropriately evaluate the actual viewing status of whether or not the broadcast stream is being viewed live. can be done.

The stream viewing analysis method of the eighth invention analyzes the entire viewing of the stream in stream transmission in which broadcast stream transmission for transmitting the stream via broadcasting and IP stream transmission for transmitting the stream via a network are performed. In the stream viewing analysis method to be analyzed,
an IP stream viewing time acquiring step of acquiring an IP stream viewing time, which is a viewing time of the stream based on an internal clock of the IP stream receiving means, from the IP stream receiving means for receiving the stream via the network;
an IP time difference calculating step of calculating an IP time difference, which is a difference between a transmission reference time in broadcasting the stream and the IP stream viewing time obtained in the IP stream viewing time obtaining step;
and a viewing determination step of determining whether the IP time difference calculated by the IP time difference calculating step falls within a predetermined determination threshold value.

According to the stream viewing analysis method of the eighth invention, the IP time difference, which is the difference between the viewing time in the IP stream receiving means and the transmission reference time (for example, broadcast time), is calculated for the IP stream.

By determining viewing of the stream whose IP time difference is in the range of a predetermined determination threshold value, for example, it is possible to perform determination equivalent to live viewing or time-shifted viewing of a broadcast stream. It is possible to grasp the actual viewing situation treated in the same way.

As described above, according to the stream viewing analysis method of the eighth invention, when the same stream as the broadcast stream is transmitted as an IP stream, the viewing state, that is, the contact state can be appropriately evaluated.

A program of a ninth invention is a program for analyzing the entire viewing of the stream in stream transmission in which broadcast stream transmission for transmitting the stream via broadcasting and IP stream transmission for transmitting the stream via a network are executed. and
to the computer,
Acquiring an IP stream viewing time, which is a viewing time of the stream based on an internal clock of the IP stream receiving means, from the IP stream receiving means for receiving the stream via the network;
calculating an IP time difference, which is the difference between the transmission reference time in broadcasting the stream and the acquired IP stream viewing time;
It is characterized in that it is determined whether the calculated IP time difference falls within a predetermined determination threshold range.

According to the program of the ninth invention, the IP time difference, which is the difference between the viewing time in the IP stream receiving means and the transmission reference time (for example, broadcast time), is calculated for the IP stream.

By determining viewing of the stream whose IP time difference is in the range of a predetermined determination threshold value, for example, it is possible to perform determination equivalent to live viewing or time-shifted viewing of a broadcast stream. It is possible to grasp the actual viewing situation treated in the same way.

As described above, according to the program of the ninth invention, when the same stream as the broadcast stream is transmitted as the IP stream, it is possible to appropriately evaluate the viewing state, that is, the contact state.

1 is a system configuration diagram showing an overview of a stream viewing analysis system according to the present embodiment; FIG. FIG. 2 is an explanatory diagram showing the contents of processing in the stream viewing analysis system of FIG. 1;

As shown in FIG. 1, the stream viewing analysis system of this embodiment combines broadcast stream transmission, which transmits a stream via broadcasting, with a network (unicast is preferable, but unicast or multicast may also be used). A system for analyzing the entire viewing of the stream in which IP stream transmission is performed to transmit the stream via a TV broadcasting station 10 that transmits the broadcast stream and the IP stream that transmits the IP stream. An IP broadcasting station 20, a TV receiver 100 (corresponding to the broadcast stream receiving means of the present invention) that receives a broadcast stream, a measuring device 110 that is installed in the TV receiver 100, and an IP that receives the IP stream. It comprises a receiving terminal 200 (corresponding to IP stream receiving means of the present invention) and a collection server 300 .

A TV broadcasting station 10 that transmits a broadcast stream includes a sending unit 11 , an encoding unit 13 , a clock 16 and a clocking unit 17 .

The sending unit 11 performs transmission as so-called broadcasting. The transmission path is not limited to terrestrial broadcasting, but may be satellite broadcasting, cable television, IP retransmission or multicast as long as it is managed by the TV broadcasting station 10 . Further, the sending unit 11 performs processing such as multiplexing at the time of transmission.

The encoding unit 13 encodes information sources such as video, audio, and data. It should be noted that encryption is performed at the time of encoding, and key information required for decoding, which will be described later, is also generated and managed by the decoding unit. In this case, the key information is periodically transmitted from the transmission unit 11 .

The clock 16 is a so-called internal clock, and in this case serves as a reference clock that serves as a transmission reference time (broadcast time).

The clocking unit 17 gives the transmission reference time (broadcast time) of the clock 16 when transmitting encoded information sources such as video, audio, and data.

The IP broadcast station 20 that transmits IP streams includes a distribution unit 21 , an encoding unit 23 , a clock 26 and a clocking unit 27 .

The distribution unit 21 performs transmission as Internet distribution in addition to so-called IP network distribution.

The encoding unit 23 encodes information sources such as video, audio, and data for IP network distribution. It should be noted that encryption is performed at the time of encoding, and key information required for decoding, which will be described later, is also generated and managed by the decoding unit. In this case, the key information is periodically transmitted from the distribution unit 21 .

Clock 26 is a so-called internal clock.

The clocking unit 27 gives the time of the clock 26 to the information sources such as video, audio, and data when the information sources are distributed over the IP network. Here, since the IP stream is the same content (including programs and commercials) as the broadcast stream, the clocking unit 27 clocks the same transmission reference time (broadcast time) as the broadcast stream.

TV receiver 100 includes receiving section 101, buffer section 102, decoding section 103, reproducing section 104, clock 106, recording section 107, and communication section .

The receiving unit 101 receives as a broadcast stream as a communication interface. In addition to reception, the receiving unit 101 performs necessary processing such as demultiplexing when the transmitted broadcast stream data is multiplexed. Thereby, a channel (for example, 101ch, etc.) is acquired.

The buffer unit temporarily accumulates broadcast stream data received by the receiving unit 101 . This enables stable decoding by the decoding unit 103, which will be described later, even if there is a temporary data loss.

The decoding unit 103 decodes the code of the information source such as video, audio, and data encoded by the encoding unit 13 of the TV broadcasting station 10 . Note that the decoding unit 103 also executes necessary processing such as extraction of key information required for decoding when encryption is performed at the time of encoding.

The reproducing unit 104 reproduces the video/audio/data decoded by the decoding unit 103 .

A clock 106 is an internal clock of the TV receiver 100 .

The recording unit 107 records various information. For example, the channel information acquired by the receiving unit 101 and the video/audio/data reproduced by the reproducing unit 104 are recorded with the time of the internal clock clocked by the clock 106, and decoded and acquired by the decoding unit 103. When the TV receiver 100 executes determination processing by the determination unit 115, which will be described later, the determination result is stored.

The communication unit 108 is an interface for connection with an external server or the like via a network, and enables, for example, transmission of information recorded in the recording unit 107 and acquisition of data from the external server.

The measuring device 110 is a so-called audience rating measuring device, that is, a device for identifying and judging the stream reproduced by the reproducing unit 104 of the TV receiver 100. and a clock 116 .

The determination unit 115 identifies and determines the stream reproduced by the reproduction unit 104 of the TV receiver 100, calculates the time difference between the viewing time of the stream and the transmission reference time (broadcast time), and determines the live viewing based on the time difference. I do.

The process of calculating the time difference between the viewing time of the stream and the transmission reference time (broadcasting time) by the determination unit 115 and performing the live viewing determination based on the time difference will be described later in detail. As for the function of the audience rating measuring device (the function of identifying and judging the reproduced stream), since various existing methods can be adopted, the explanation is omitted.

A clock 116 is an internal clock of the measuring device 110 and counts the stream viewing time.

The IP receiver 200 includes a receiving unit 201, a buffer unit 202, a decoding unit 203, a reproducing unit 204, and a determining unit 205 (corresponding to the IP stream viewing time acquiring unit, IP time difference calculating unit, and viewing determining unit of the present invention). ), a clock 206 , a recording unit 207 , and a communication unit 208 .

The receiving unit 201 receives an IP stream as a communication interface. In addition to reception, the receiving unit 201 performs necessary processing such as demultiplexing when the transmitted IP stream data is multiplexed.

The buffer unit temporarily accumulates IP stream data received by the receiving unit 201 . This enables stable decoding by the decoding unit 203, which will be described later, even if there is a temporary data loss.

The decoding unit 203 decodes the code of the information source such as video, audio, and data encoded by the encoding unit 23 of the IP broadcast station 20 . Note that the decoding unit 203 also executes necessary processing such as extraction of key information necessary for decoding when encryption is performed at the time of encoding.

The reproducing unit 204 reproduces the video/audio/data decoded by the decoding unit 203 .

Determining section 205 identifies and determines the stream reproduced by reproducing section 204 of IP receiving terminal 200, calculates the time difference between the viewing time and broadcasting time of the stream, and performs live viewing determination based on the time difference.

The determination unit 205 identifies and determines the stream reproduced by the reproduction unit 204 of the IP receiving terminal 200, calculates the IP time difference, which is the time difference between the viewing time of the stream and the transmission reference time (broadcast time), and calculates the IP time difference. Live viewing judgment is performed from the time difference.

The process of calculating the IP time difference between the viewing time of the stream and the transmission reference time (broadcast time) by the determining unit 205 and performing the live viewing determination based on the IP time difference will be described later in detail. Since various existing methods can be adopted for the function of identifying and judging the reproduced stream, description thereof will be omitted.

Clock 206 is an internal clock of IP receiving terminal 200 .

A recording unit 207 records various types of information. For example, the video/audio/data reproduced by the reproduction unit 204 is recorded with the time of the internal clock measured by the clock 206, and the judgment result of the judgment processing by the judgment unit 205 is stored.

The communication unit 208 is an interface for connection with an external server or the like via a network, and is capable of transmitting information recorded in the recording unit 207 and acquiring data from the external server, for example.

Aggregation server 300 includes aggregation unit 305 and storage unit 307. Through aggregation unit 305, the determination result of judgment unit 115 of judgment device 110 accompanying TV receiver 100 and the judgment of judgment unit 205 of IP receiving terminal 200 are transmitted. The results are aggregated, and the aggregated judgment results are accumulated in the accumulation unit 307 .

The above is the configuration of the stream viewing analysis system of the present embodiment. In the above configuration, each processing unit of the TV broadcasting station 10, the IP broadcasting station 20, the TV receiver 100, the measuring instrument 110, the IP receiving terminal 200, and the tallying server 300 is, for example, a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), etc. Programs that execute various processes described later are stored in memory (not shown) and executed. By doing so, it functions as an arithmetic unit (sequencer) for executing various processes.

Part or all of the TV broadcasting station 10, the IP broadcasting station 20, the TV receiver 100, the measuring instrument 110, the IP receiving terminal 200, and the tallying server 300 are configured by other servers (external servers). Alternatively, a stream viewing analysis system may be realized by distributed processing.

Next, with reference to FIG. 2, the details of the processing performed by determining section 115 of measuring instrument 110 and determining section 205 of IP receiving terminal 200, which will be described later, will be described.

First, as shown on the left side of FIG. 2A, the determination unit 115 identifies a reproduced stream (channel/broadcast program) as an audience rating measurement device (for example, indirectly identifies from video or audio), The stream also specifies the transmission reference time (broadcast time). The transmission reference time (broadcast time) may be specified by referring to an external server or the like from the reproduced stream (channel/broadcast program).

Note that the determination unit 115 as an audience rating measurement device is connected via the communication unit 108 of the TV receiver 20, directly identifies the stream decoded by the decoding unit 103 and reproduced by the reproduction unit 104, and The assigned transmission reference time (broadcast time) may be obtained directly.

Next, the determination unit 115 calculates the broadcast time difference, which is the time difference between the broadcast stream viewing time and the transmission reference time (broadcast time) of the reproduced stream.

The viewing time may be determined based on the time (internal clock) of the clock 116 of the measuring device 110. When the measuring device 110 is connected via the communication unit 108 of the TV receiver 20, The viewing time (internal clock) based on the clock 106 recorded in the recording unit 107 may be used.

Specifically, the determination unit 115 calculates the broadcast time difference of the viewed stream based on the viewing start time of the viewing time. That is, the broadcast time difference is calculated as the difference between the viewing start time (playback start time) of the internal clock and the start time of the stream transmission reference time (broadcast start time).

In this way, by using the viewing start time as a reference, it is possible to easily calculate the broadcast time difference, and to easily and reliably determine viewing of a stream whose broadcast time difference falls within the range of the following predetermined determination threshold. can be done.

Next, the determination unit 115 performs viewing determination based on the determination threshold as shown on the right side of FIG. 2A for the calculated broadcast time difference.

Specifically, when the broadcast time difference is smaller than the first threshold, the determination unit 115 adopts the internal clock (the clock 116 or the reproduction time based on the clock 106) as the viewing time. Here, the first threshold is set as a range in which the time difference between the viewing time and the transmission reference time (broadcast time) can be regarded as almost the same (for example, several seconds to one minute as the first threshold).

If the broadcast time difference is larger than the first threshold and smaller than the second threshold, the determination unit 115 adopts the transmission reference time (broadcast time) as the viewing time. Here, the second threshold is set as a range (for example, a few minutes to 10 minutes as the second threshold) in which it can be assumed that the viewing time and the broadcasting time are almost the same time although there is a slight time difference. be done.

In these cases, i.e., when the broadcast time difference is smaller than the first threshold and when it is larger than the first threshold and smaller than the second threshold, the time shift is performed based on the internal clock and the transmission reference time (broadcast time), respectively. It is determined and aggregated as live viewing without being judged. As for the determination tallying process, the processing in the tallying server 300 will be described later.

On the other hand, when the broadcast time difference is larger than the second threshold, the determination unit 115 determines that the viewing is time-shifted, and then adopts the transmission reference time (broadcast time). In this case, the tabulation server 300, which will be described later, judges and tabulates as time-shifted viewing.

Specifically, the determination processing by the determination unit 115 will be described using the example shown in FIG. 2B. In FIG. 2B, X001 and X002 are the terminal IDs of the TV receiver, and the viewing time zone shown in a strip in the figure is the viewing time (terminal time in the figure) based on the internal clock.

First, for the content name AAA (broadcast time 18:10-18:30), the terminal ID X001 corresponds to the broadcast time start time 18: 10 and the viewing start time 18:10 of the internal clock is determined to be 0 and smaller than the first threshold value (1 minute). The time is determined as viewing time 18:10-18:30 of the internal clock.

Next, X002 of the terminal ID is the internal clock viewing time 18:10.5 (18:10:30)-18:30.5 ( 18:30:30), the broadcast time difference, which is the difference between the broadcast time start time 18:10 and the internal clock viewing start time 18:10.5, is 0, which is the first threshold value (1 minute ), the viewing time is 18:10.5 (18:10:30) - 18:30.5 (18:30:30) of the internal clock. be judged.

Next, similarly, the processing contents of determination section 205 of IP receiving terminal 200 will be described.

First, the determination unit 205 identifies the reproduced IP stream (channel/broadcast program) and specifies the transmission reference time (broadcast time) given to the stream.

Next, the determination unit 205 calculates the IP time difference, which is the IP stream time difference between the viewing time of the reproduced stream (time of the internal clock of the clock 206) and the transmission reference time (broadcast time).

Specifically, determination section 205 calculates the broadcast time difference of the viewed IP stream based on the viewing start time of the viewing time (similar to determination section 115). That is, the IP time difference is calculated as the difference between the viewing start time (playback start time) of the internal clock and the start time (broadcast start time) of the IP stream transmission reference time.

In this way, by using the viewing start time as a reference, the IP time difference can be easily calculated, and it is possible to easily and reliably determine viewing of a stream in which the IP time difference falls within the following predetermined determination threshold range. can be done.

Next, the determination unit 205 performs viewing determination using a determination threshold (similar to the broadcast time difference of the determination unit 115) for the calculated IP time difference, as shown on the right side of FIG. 2A.

Specifically, when the IP time difference is smaller than the first threshold (similar to the broadcast time difference of the determination unit 115), the determination unit 205 adopts the internal clock (playback time based on the clock 206) as the viewing time.

If the IP time difference is larger than the first threshold and smaller than the second threshold, the determination unit 205 adopts the transmission reference time (broadcast time) as the viewing time.

In these cases, i.e., when the IP time difference is smaller than the first threshold and when the IP time difference is larger than the first threshold and smaller than the second threshold, the internal clock and the transmission reference time (broadcast time) are used as references, respectively. It is determined and aggregated as live viewing without being judged. As for the determination tallying process, the processing in the tallying server 300 will be described later.

On the other hand, when the IP time difference is larger than the second threshold, the determination unit 205 determines that the viewing is time-shifted, and then adopts the transmission reference time (broadcast time). In this case, the tabulation server 300, which will be described later, judges and tabulates as time-shifted viewing.

Specifically, the determination processing by the determination unit 205 will be described using the example shown in FIG. 2B. In FIG. 2B, Y001, Y002, Y003, Y004, and Y005 are the terminal IDs of IP receiving terminal 200, and the viewing time zone in the figure is the viewing time (terminal time in the figure) based on the internal clock. be.

First, Y001 of the terminal ID indicates that the content name AAA (broadcast time 18:10-18:30) is viewed at the viewing time 18:15-18:35 of the internal clock, the broadcast time start time 18: 10 and the viewing start time 18:15 of the internal clock is 5, which is determined to be larger than the first threshold (1 minute) and smaller than the second threshold (10 minutes). , in this case, the viewing time is determined to be broadcast time 18:10-18:30.

Next, terminal ID Y002 is for content name BBB (broadcast time 18:10-18:15) and content name CCC (broadcast time 18:10-18:15), and content name BBB is for internal clock viewing. Time 18:10.5 (18:10:30) to 18:15.5 (18:15:30), and the content name CCC will be explained when viewed from 18:16 to 18:21. .

Regarding the content name BBB, the broadcast time difference between the broadcast start time 18:10 and the viewing start time 18:10.5 of the internal clock is determined to be 0.5, which is smaller than the first threshold value (1 minute). Therefore, for the content name BBB, the viewing time is determined to be 18:10.5 (18:10:30)-18:15.5 (18:15:30) of the internal clock.

Regarding the content name CCC, the broadcast time difference, which is the difference between the broadcast time start time 18:10 and the viewing start time 18:16 of the internal clock, is 6, which is greater than the first threshold (1 minute) and greater than the second threshold (10 minutes). Since it is determined to be small, the viewing time for the content name CCC is determined to be the broadcast time 18:10-18:15.

Next, Y003 of the terminal ID is when the content name AAA (broadcast time 18:10-18:25) is viewed at the viewing time 18:15-18:25 of the internal clock (at 1.5x speed playback) , the broadcast time difference, which is the difference between the broadcast time start time 18:10 and the internal clock viewing start time 18:15, is 5, which is greater than the first threshold (1 minute) and greater than the second threshold (10 minutes). Since it is determined to be small, in this case, the viewing time is determined to be the broadcast time 18:10-18:25.

In this case, since the viewing time measured by the internal clock is 10 minutes from 18:15 to 18:25, and the transmission reference time acquired by the determination unit is 18:10 to 18:25 for 15 minutes, It is also possible to obtain the double speed playback speed by calculating 15/10=1.5.

Next, Y004 of the terminal ID is the internal clock viewing time 18:10.5 (18:10:30)-18:30.5 ( 18:30:30) and (at 0.5x speed reproduction), the start time of the broadcast time is 18:10 and the viewing start time of the internal clock is 18:10.5 (18:10:30 seconds) is 0.5, which is determined to be smaller than the first threshold value (1 minute). be.

In this case, the viewing time measured by the internal clock is 18:10.5 (18:10:30) - 18:18:30.5 (18:30:30) for 20 minutes. 18:10 to 18:20 for 10 minutes, it is possible to obtain the double-speed playback speed by calculating 10/20=0.5.

Next, Y005 of the terminal ID indicates that the content name AAA (broadcast time 18:10-18:20) is viewed at the viewing time 18:25-18:35 of the internal clock, the broadcast time start time 18 :10 and the viewing start time 18:25 of the internal clock is 15, and is determined to be greater than the second threshold (10 minutes). The time will be 18:10-18:20.

The details of the processing performed by determination section 115 of measuring device 110 and determination section 205 of IP receiving terminal 200 have been described above. Regardless, they are counted by the count server 300 as being of the same quality.

That is, the aggregation unit 305 of the aggregation server 300 adopts the time of the internal clock when the time difference (broadcast time difference and IP time difference) is less than the first threshold, and when the time is greater than the first threshold and less than the second threshold. When adopted, these are determined and aggregated as live viewing of the stream.

As a result, when the same stream as the broadcast stream is transmitted as an IP stream, it is possible to appropriately evaluate the viewing status as to whether the stream is live viewing.

As described in detail above, according to the stream viewing analysis system of the present embodiment, when the same stream as the broadcast stream is transmitted as an IP stream, the viewing state, that is, the contact state can be appropriately evaluated. .

In the stream viewing analysis system of the present embodiment, a case has been described in which both determination processing by the determination unit 115 of the measuring device 110 and determination processing by the determination unit 205 of the IP receiving terminal 200 are performed, but only one of them is performed. You may do so.

Further, in the stream viewing analysis system of the present embodiment, a configuration in which the measuring device 110 is provided separately from the TV receiver 100 has been described, but the configuration is not limited to this, and the measuring device 110 can be installed inside the TV receiver 100. may be configured.

Furthermore, in the stream viewing analysis system of the present embodiment, the case where the determining unit 115 of the measuring device 110 and the determining unit 205 of the IP receiving terminal 200 are provided separately, and the totaling server 300 collectively totals has been described. However, these judgment units (the judgment unit 115 and the judgment unit 205) may be integrated into one in the collection server 300. FIG.

In addition, in the present embodiment, the time difference is calculated based on the viewing start time of the stream, but the present invention is not limited to this. The time difference may be calculated for the entire viewing time, and determination may be made using the first threshold and the second threshold. In addition, the determination threshold may be either one of the first threshold and the second threshold, and other thresholds may be added for determination.

DESCRIPTION OF SYMBOLS 10... TV broadcasting station 11... Sending part of TV broadcasting station 13... Encoding part of TV broadcasting station 16... Clock of TV broadcasting station 17... Stamping part of TV broadcasting station 20... IP broadcasting station 21... Distribution unit of IP broadcasting station 23 Encoding unit of IP broadcasting station 26 Clock of IP broadcasting station 27 Clocking unit of IP broadcasting station 100 TV receiver 101 Receiving unit of TV receiver 102 Buffer unit of TV receiver 103 Decoding unit of TV receiver 104 Reproducing unit of TV receiver 106 Clock of TV receiver 107 Recording unit of TV receiver 108 Communication of TV receiver Unit 200 IP receiving terminal 201 IP receiving terminal receiving unit 202 IP receiving terminal buffer unit 203 IP receiving terminal decoding unit 204 IP receiving terminal reproducing unit 205 IP receiving terminal Determining unit 206 Clock of IP receiving terminal 207 Recording unit of IP receiving terminal 208 Communication unit of IP receiving terminal 300 Compilation server 305 Aggregation unit 307 Accumulation unit.

A stream viewing analysis system of a first invention analyzes viewing of a stream in stream transmission in which broadcast stream transmission for transmitting the stream via broadcasting and IP stream transmission for transmitting the stream via a network are performed. In the stream viewing analysis system,
an IP stream viewing time acquisition unit that acquires an IP stream viewing time, which is a viewing time of the stream based on an internal clock of the IP stream receiving means, from the IP stream receiving means that receives the stream via the network;
an IP time difference calculation unit that calculates an IP time difference, which is a difference between a transmission reference time in the broadcasting of the stream and the IP stream viewing time acquired by the IP stream viewing time acquisition unit;
a viewing determination unit for determining whether the IP time difference calculated by the IP time difference calculation unit falls within a predetermined determination threshold range , wherein the viewing determination unit determines whether the IP time difference is smaller than a first threshold value. Adopting the time of the internal clock of the IP stream receiving means for the IP time difference, and adopting the transmission reference time when the IP time difference is greater than the first threshold and less than a second threshold greater than the first threshold. By doing so, it is characterized in that judgment totaling is performed as live viewing of the stream.

As described above, according to the stream viewing analysis system of the first invention, when the same stream as the broadcast stream is transmitted as the IP stream, the viewing state, that is, the contact state can be appropriately evaluated.
Further, according to the stream viewing analysis system of the first invention, by setting the first threshold, the time difference between the stream transmission reference time and the IP stream viewing time is within a range (for example, the first threshold seconds) can be set. In this case (when the time difference is smaller than the first threshold), it can be determined as live viewing based on the internal clock of the IP stream receiving means.
Also, by setting the second threshold, the time difference between the stream transmission reference time and the IP stream viewing time is within a range in which it can be assumed that the viewing time is almost the same although there is a slight time difference (for example, the second threshold minutes) can be set. In this case (when the time difference is greater than the first threshold and less than the second threshold), the transmission reference time (broadcast time) can be used as a reference, and live viewing can be determined without being determined as a time shift.
As described above, according to the stream viewing analysis system of the first invention, when the same stream as the broadcast stream is transmitted as an IP stream, it is possible to appropriately evaluate the actual viewing status as to whether or not the stream is live viewing.

A stream viewing analysis system of a third invention, in the first or second invention ,
A broadcast stream viewing time acquiring unit for acquiring a broadcast stream viewing time, which is a viewing time of the stream based on an internal clock of the broadcast stream receiving means, from the broadcast stream receiving means for receiving the stream via the broadcasting. Characterized by

According to the stream viewing analysis system of the third invention, the broadcast stream viewing time, which is the stream viewing time based on the internal clock of the broadcast stream receiving means, is acquired. Therefore, it is possible to refer to the broadcast stream viewing time.

As a result, according to the stream viewing analysis system of the third aspect of the invention, when the same stream as the broadcast stream is transmitted as the IP stream, the viewing state, that is, the contact state can be appropriately determined by referring to the broadcast stream viewing time. can be evaluated.

The stream viewing analysis system of the fourth invention is, in the third invention,
a broadcast time difference calculation unit that calculates a broadcast time difference, which is a difference between a transmission reference time in broadcasting the stream and the broadcast stream viewing time acquired by the broadcast stream viewing time acquisition unit;
The viewing determination unit determines whether the broadcast time difference calculated by the broadcast time difference calculation unit falls within the range of the predetermined determination threshold.

According to the stream viewing analysis system of the fourth aspect of the invention, the IP time difference, which is the difference between the viewing time in the broadcast stream receiving means and the transmission reference time (for example, the broadcasting time), is calculated for the broadcast stream.

As described above, according to the stream viewing analysis system of the fourth invention, when the same stream as the broadcast stream is transmitted as the IP stream, the viewing state, that is, the contact state, is appropriately evaluated based on the same standard. be able to.

The stream viewing analysis system of the fifth invention, in the fourth invention,
The broadcast stream viewing time acquisition unit acquires a broadcast stream viewing time including a viewing start time of the stream based on an internal clock of the broadcast stream receiving means,
The broadcast time difference calculation unit is characterized by calculating the broadcast time difference based on viewing start time of the stream.

According to the stream viewing analysis system of the fifth invention, the viewing start time is used as a reference when calculating the broadcast time difference. That is, the broadcast time difference is calculated as the difference between the viewing start time of the viewing time in the broadcast stream receiving means and the transmission reference time (broadcast start time).

As described above, according to the stream viewing analysis system of the fifth invention, when the same stream as the broadcast stream is transmitted as the IP stream, the viewing status, that is, the contact status can be easily and appropriately determined based on the same standard. can be evaluated.

The stream viewing analysis system of the sixth invention, in the fourth or fifth invention,
The viewing determination unit adopts the internal clock of the broadcast stream receiving means for the broadcast time difference when the broadcast time difference is smaller than the first threshold, and when the broadcast time difference is greater than the first threshold, the first If it is smaller than a second threshold, which is larger than the threshold, by adopting the transmission reference time, these are counted as live viewing of the stream.

Thus, according to the stream viewing analysis system of the sixth invention, when the same stream as a broadcast stream is transmitted as an IP stream, it is possible to appropriately evaluate the actual viewing status of whether or not the broadcast stream is being viewed live. can be done.

A stream viewing analysis method according to a seventh aspect of the present invention analyzes the entire viewing of a stream in stream transmission in which broadcast stream transmission for transmitting the stream via broadcasting and IP stream transmission for transmitting the stream via a network are performed. In the stream viewing analysis method to be analyzed,
an IP stream viewing time acquiring step of acquiring an IP stream viewing time, which is a viewing time of the stream based on an internal clock of the IP stream receiving means, from the IP stream receiving means for receiving the stream via the network;
an IP time difference calculating step of calculating an IP time difference, which is a difference between a transmission reference time in broadcasting the stream and the IP stream viewing time obtained in the IP stream viewing time obtaining step;
a viewing determination step of determining whether the IP time difference calculated by the IP time difference calculating step falls within a predetermined determination threshold ,
The viewing determination step adopts the time of the internal clock of the IP stream receiving means for the IP time difference when the IP time difference is less than the first threshold, and when the IP time difference is greater than the first threshold, the If it is smaller than a second threshold, which is larger than the first threshold, the transmission reference time is adopted, and the live viewing of the stream is determined and tabulated.

According to the stream viewing analysis method of the seventh invention, the IP time difference, which is the difference between the viewing time in the IP stream receiving means and the transmission reference time (for example, broadcast time), is calculated for the IP stream.

As described above, according to the stream viewing analysis method of the seventh invention, when the same stream as the broadcast stream is transmitted as an IP stream, it is possible to appropriately evaluate the viewing state, that is, the contact state.

A program of an eighth invention is a program for analyzing the entire viewing of the stream in stream transmission in which broadcast stream transmission for transmitting the stream via broadcasting and IP stream transmission for transmitting the stream via a network are executed. and
to the computer,
Acquiring an IP stream viewing time, which is a viewing time of the stream based on an internal clock of the IP stream receiving means, from the IP stream receiving means for receiving the stream via the network;
calculating an IP time difference, which is the difference between the transmission reference time in broadcasting the stream and the acquired IP stream viewing time;
when the calculated IP time difference is smaller than the first threshold, the time of the internal clock of the IP stream receiving means for the IP time difference is adopted, and when the IP time difference is greater than the first threshold, If it is smaller than a second larger threshold, the transmission reference time is adopted, and these are judged to be live viewing of the stream, and are counted.

According to the program of the eighth invention, the IP time difference, which is the difference between the viewing time in the IP stream receiving means and the transmission reference time (for example, broadcast time), is calculated for the IP stream.

As described above, according to the program of the eighth invention, when the same stream as the broadcast stream is transmitted as the IP stream, it is possible to appropriately evaluate the viewing state, that is, the contact state.

Claims (9)

In a stream viewing analysis system for analyzing viewing of a stream in stream transmission in which broadcast stream transmission for transmitting the stream via broadcasting and IP stream transmission for transmitting the stream via a network are performed,
an IP stream viewing time acquisition unit that acquires an IP stream viewing time, which is a viewing time of the stream based on an internal clock of the IP stream receiving means, from the IP stream receiving means that receives the stream via the network;
an IP time difference calculation unit that calculates an IP time difference, which is a difference between a transmission reference time in the broadcasting of the stream and the IP stream viewing time acquired by the IP stream viewing time acquisition unit;
A stream viewing analysis system, comprising: a viewing determination unit that determines whether the IP time difference calculated by the IP time difference calculation unit falls within a predetermined determination threshold range. The stream viewing analysis system according to claim 1,
the IP stream viewing time acquisition unit acquires an IP stream viewing time including a viewing start time of the stream based on an internal clock of the IP stream receiving means;
The stream viewing analysis system, wherein the IP time difference calculation unit calculates the IP time difference based on a viewing start time of the stream. 3. The stream viewing analysis system according to claim 1 or 2,
When the IP time difference is smaller than the first threshold, the viewing determination unit adopts the time of the internal clock of the IP stream receiving means for the IP time difference, and when the IP time difference is greater than the first threshold, A stream viewing analysis system, characterized in that, if the transmission reference time is smaller than a second threshold, which is larger than a first threshold, the transmission reference time is adopted, and the live viewing of the stream is determined and tallied. The stream viewing analysis system according to any one of claims 1 to 3,
A broadcast stream viewing time acquiring unit for acquiring a broadcast stream viewing time, which is a viewing time of the stream based on an internal clock of the broadcast stream receiving means, from the broadcast stream receiving means for receiving the stream via the broadcasting. Characterized stream viewing analysis system. The stream viewing analysis system according to claim 4,
a broadcast time difference calculation unit that calculates a broadcast time difference, which is a difference between a transmission reference time in broadcasting the stream and the broadcast stream viewing time acquired by the broadcast stream viewing time acquisition unit;
The stream viewing analysis system, wherein the viewing determination unit determines whether the broadcast time difference calculated by the broadcast time difference calculation unit falls within the range of the predetermined determination threshold. The stream viewing analysis system according to claim 5,
The broadcast stream viewing time acquisition unit acquires a broadcast stream viewing time including a viewing start time of the stream based on an internal clock of the broadcast stream receiving means,
The stream viewing analysis system, wherein the broadcast time difference calculation unit calculates the broadcast time difference based on a viewing start time of the stream. 7. The stream viewing analysis system according to claim 5 or 6,
The viewing determination unit adopts the internal clock of the broadcast stream receiving means for the broadcast time difference when the broadcast time difference is smaller than the first threshold, and when the broadcast time difference is greater than the first threshold, the first A stream viewing analysis system, characterized in that, when the transmission reference time is smaller than a second threshold, which is larger than the threshold, these are counted as live viewing of the stream by adopting the transmission reference time. In a stream viewing analysis method for analyzing the entire viewing of a stream in stream transmission in which broadcast stream transmission for transmitting the stream via broadcasting and IP stream transmission for transmitting the stream via a network are performed,
an IP stream viewing time acquiring step of acquiring an IP stream viewing time, which is a viewing time of the stream based on an internal clock of the IP stream receiving means, from the IP stream receiving means for receiving the stream via the network;
an IP time difference calculating step of calculating an IP time difference, which is a difference between a transmission reference time in broadcasting the stream and the IP stream viewing time obtained in the IP stream viewing time obtaining step;
and a viewing determination step of determining whether the IP time difference calculated by the IP time difference calculating step falls within a predetermined determination threshold range. A program for analyzing the overall viewing of a stream in stream transmission in which broadcast stream transmission for transmitting the stream via broadcasting and IP stream transmission for transmitting the stream via a network are performed,
to the computer,
Acquiring an IP stream viewing time, which is a viewing time of the stream based on an internal clock of the IP stream receiving means, from the IP stream receiving means for receiving the stream via the network;
calculating an IP time difference, which is the difference between the transmission reference time in broadcasting the stream and the acquired IP stream viewing time;
A program for determining whether a calculated IP time difference falls within a predetermined determination threshold range.

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