JP7038242B1 - Stream viewing analysis system, stream viewing analysis method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stream viewing analysis system, a stream viewing analysis method and a program capable of appropriately evaluating a viewing actual condition, that is, a contact actual condition when the same stream as a broadcast stream is transmitted as an IP stream. And. A determination unit 115 of a measuring device 110 that is incompatible with a TV receiver 100 identifies and determines a stream reproduced by a reproduction unit 104 of the TV receiver 100, and at the same time, a viewing time and a transmission reference time (broadcasting) of the stream. The time difference from the time) is calculated, and the live viewing judgment is made from the time difference. The determination unit 205 of the IP receiving terminal 200 identifies and determines the stream reproduced by the reproduction unit 204 of the IP receiving terminal 200, and determines the IP time difference, which is the time difference between the viewing time and the transmission reference time (broadcasting time) of the stream. It is calculated and the live viewing judgment is made from the IP time difference. [Selection diagram] Fig. 1

Description

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

Conventionally, as this type of IP stream transmission system, as shown in Patent Document 1 below, a broadcast server that distributes scheduled broadcast content associated with a broadcast time and a plurality of terminals that receive the scheduled broadcast content communicate with each other. In a broadcasting system connected via the Internet, which is a network, a system is known in which a broadcasting server transmits scheduled broadcast content before and after the broadcasting time at the request of the terminal processing unit of the terminal, enabling staggered transmission. ing.

Japanese Unexamined Patent Publication No. 2020-65137

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) of transmission (sending)) but also the traffic load due to the characteristics of the network. Due to distribution delays, network capacity variations, transmission volume variations due to differences in image quality, playback buffers, and playback variations and delays due to the performance of IP receiving terminals), viewing timings vary. Therefore, it is desired to grasp the actual viewing condition as the same stream, that is, the actual contact condition.

In particular, in many cases, the same stream is transmitted as an IP stream later than the broadcast time, so it is desired to treat this as an IP stream to appropriately evaluate the stream.

In view of the above circumstances, the present invention is a stream viewing analysis system and a stream viewing analysis method capable of appropriately evaluating the viewing state, that is, the contact state when the same stream as the broadcast stream is transmitted as an IP stream. And the purpose is to provide the program.

The stream viewing analysis system of the first invention covers the entire viewing of the stream in the stream transmission in which the broadcast stream transmission for transmitting the stream via the broadcast and the IP stream transmission for transmitting the stream over the network are executed. In the stream viewing analysis system to be analyzed
A broadcast stream viewing time acquisition unit that acquires a broadcast stream viewing time, which is the viewing time of the stream based on the internal clock of the broadcast stream receiving means, from the broadcast stream receiving means that receives the stream via the broadcast.
An IP stream viewing time acquisition unit that acquires an IP stream viewing time, which is the viewing time of the stream based on the internal clock of the IP stream receiving means, from the IP stream receiving means that receives the stream via the network.
A broadcast time difference calculation unit that calculates a broadcast time difference, which is the difference between the transmission reference time of the stream and the broadcast stream viewing time acquired by the broadcast stream viewing time acquisition unit.
An IP time difference calculation unit that calculates an IP time difference, which is the difference between the transmission reference time of the stream and the IP stream viewing time acquired by the IP stream viewing time acquisition unit.
A viewing judgment unit that determines the viewing of the stream in which the broadcast time difference calculated by the broadcast time difference calculation unit and the IP time difference calculated by the IP time difference calculation unit are regarded as the same quality time difference and the time difference is within the range of a predetermined determination threshold value. It is characterized by having and.

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

Then, by using these broadcast time differences and IP time differences as the same quality time difference and determining the viewing of the stream in which the time difference is within the range of a predetermined determination threshold value, it is possible to treat the IP stream and the broadcast stream in the same manner. ..

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, the viewing condition, that is, the contact condition can be appropriately evaluated.

The stream viewing analysis system of the second invention is the same as that of the first invention.
The broadcast stream viewing time acquisition unit acquires a broadcast stream viewing time including the viewing start time of the stream based on the internal clock of the broadcast stream receiving means, and the IP stream viewing time acquisition unit obtains the IP stream viewing time acquisition unit. Acquires the IP stream viewing time including the viewing start time of the stream based on the internal clock of
The broadcast time difference calculation unit calculates the broadcast time difference based on the viewing start time of the stream, and the IP time difference calculation unit calculates the IP time difference based on the viewing start time of the stream. do.

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

Then, by using these broadcast time differences and IP time differences, which are calculated based on the viewing start time, as the same quality time difference, the viewing determination of the stream in which the time difference is within the range of the predetermined determination threshold value is performed to determine the viewing of the IP stream. It becomes possible by treating it in the same way as a broadcast stream.

As described above, according to the stream viewing analysis system of the second invention, the same stream as the stream can be obtained by calculating the broadcast difference and the IP time difference based on the viewing start time of the viewing time and making them the same quality. When transmitted as an IP stream, the viewing condition, that is, the contact condition can be evaluated easily and appropriately.

The stream viewing analysis system of the third invention is described in the first or second invention.
When the time difference is smaller than the first threshold value, the viewing determination unit adopts the time of the internal clock of the broadcast stream receiving means or the internal clock of the IP stream receiving means of the time difference, and the time difference is the first. When it is larger than one threshold value and smaller than the second threshold value larger than the first threshold value, the transmission reference time is adopted, and these are determined as live viewing of the stream.

According to the stream viewing analysis system of the third invention, by setting the first threshold value, the time difference between the stream transmission reference time and the broadcast stream viewing time or the IP stream viewing time can be regarded as almost simultaneous (for example,). A few seconds to one minute) can be set as the first threshold value. Then, in this case (when the time difference is smaller than the first threshold value), the broadcast and the IP can be determined without distinction as live viewing based on the internal clock of the broadcast stream receiving means or the internal clock of the IP stream receiving means. ..

In addition, by setting the second threshold value, the time difference between the stream transmission reference time and the broadcast stream viewing time or the IP stream viewing time can be regarded as being viewed at almost the same time, although there is a slight time difference ( For example, a second threshold value (about several minutes to 10 minutes) can be set. Then, in this case (when the time difference is larger than the first threshold value and smaller than the second threshold value), the broadcast and the IP are separated as live viewing without being determined as a time shift based on the transmission reference time (broadcast time). Can be determined without.

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 viewing condition of whether or not the stream is live viewing.

In the stream viewing analysis method of the fourth invention, the entire viewing of the stream in the stream transmission in which the broadcast stream transmission for transmitting the stream via the broadcast and the IP stream transmission for transmitting the stream via the network are executed is performed. In the stream viewing analysis method to be analyzed
A broadcast stream viewing time acquisition step of acquiring a broadcast stream viewing time, which is a viewing time of the stream based on the internal clock of the broadcast stream receiving means, from a broadcast stream receiving means that receives the stream via the broadcast.
An IP stream viewing time acquisition step of acquiring an IP stream viewing time, which is a viewing time of the stream based on the internal clock of the IP stream receiving means, from an IP stream receiving means that receives the stream via the network.
A broadcast time difference calculation step for calculating a broadcast time difference, which is a difference between the transmission reference time of the stream and the broadcast stream viewing time acquired in the broadcast stream viewing time acquisition step,
An IP time difference calculation step for calculating the IP time difference, which is the difference between the transmission reference time of the stream and the IP stream viewing time acquired in the IP stream viewing time acquisition step, and
A viewing judgment step of determining the viewing of the stream in which the broadcast time difference calculated in the broadcast time difference calculation process and the IP time difference calculated in the IP time difference calculation process are regarded as the same quality time difference and the time difference is within a predetermined determination threshold range. It is characterized by executing and.

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

Then, by using these broadcast time differences and IP time differences as the same quality time difference and determining the viewing of the stream in which the time difference is within the range of a predetermined determination threshold value, it is possible to treat the IP stream and the broadcast stream in the same manner. ..

As described above, according to the stream viewing analysis method 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 evaluated.

The program of the fifth invention is a program that analyzes the entire viewing of the stream in the stream transmission in which the broadcast stream transmission for transmitting the stream via the broadcast and the IP stream transmission for transmitting the stream over the network are executed. And
On the computer
From the broadcast stream receiving means that receives the stream via the broadcast, the broadcast stream viewing time, which is the viewing time of the stream based on the internal clock of the broadcast stream receiving means, is acquired.
From the IP stream receiving means that receives the stream via the network, the IP stream viewing time, which is the viewing time of the stream based on the internal clock of the IP stream receiving means, is acquired.
The broadcast time difference, which is the difference between the transmission reference time of the stream and the acquired broadcast stream viewing time, is calculated.
The IP time difference, which is the difference between the transmission reference time of the stream and the acquired IP stream viewing time, is calculated.
It is characterized in that the calculated broadcast time difference and the IP time difference are set as the same quality time difference, and the viewing of the stream whose time difference is within the range of a predetermined determination threshold value is determined.

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

Then, by using these broadcast time differences and IP time differences as the same quality time difference and determining the viewing of the stream in which the time difference is within the range of a predetermined determination threshold value, it is possible to treat the IP stream and the broadcast stream in the same manner. ..

As described above, according to the program of the fifth invention, when the same stream as the broadcast stream is transmitted as an IP stream, the viewing condition, that is, the contact condition can be appropriately evaluated.

The system block diagram which shows the outline of the stream viewing analysis system of this embodiment. It is explanatory drawing which shows the processing content in the stream viewing analysis system of FIG.

As shown in FIG. 1, the stream viewing analysis system of the present embodiment has a broadcast stream transmission for transmitting a stream via broadcasting and a network (unicast is preferable, but unicast or multicast may be used). It is a system that analyzes the entire viewing of the stream in the stream transmission in which the IP stream transmission for transmitting the stream is executed, and transmits the IP stream to the TV broadcasting station 10 that transmits the broadcast stream. The IP broadcasting station 20, the TV receiver 100 for receiving the broadcast stream (corresponding to the broadcast stream receiving means of the present invention), the measuring device 110 installed in the TV receiver 100, and the IP for receiving the IP stream. It includes a receiving terminal 200 (corresponding to the IP stream receiving means of the present invention) and an aggregation server 300.

The TV broadcasting station 10 that transmits a broadcast stream includes a transmission unit 11, a code unit 13, a clock 16, and a stamping unit 17.

The transmission unit 11 performs transmission as a so-called broadcast. The transmission line is not limited to terrestrial broadcasting, but may be satellite broadcasting, cable television, or IP retransmission or multicast as long as it is managed by the TV broadcasting station 10. In addition, the transmission unit 11 performs processing such as multiplexing during transmission.

The coding unit 13 encodes an information source such as video, audio, and data. At the time of encoding, encryption is also performed, and the key information required for decryption, which will be described later, is also generated and managed by the decryption 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, it is a reference clock that serves as a transmission reference time (broadcast time).

The stamping unit 17 assigns a transmission reference time (broadcast time) of the clock 16 when transmitting a coded information source such as video, audio, and data.

The IP broadcasting station 20 that transmits an IP stream includes a distribution unit 21, a code unit 23, a clock 26, and a stamping unit 27.

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

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

The clock 26 is a so-called internal clock.

The stamping unit 27 assigns the time of the clock 26 to the information source when the information source such as video, audio, and data is distributed on the IP network. Here, since the IP stream has the same content (including programs and CMs) as the broadcast stream, the same transmission reference time (broadcast time) as the broadcast stream is stamped by the stamping unit 27.

The TV receiver 100 includes a receiving unit 101, a buffer unit 102, a decoding unit 103, a playback unit 104, a clock 106, a recording unit 107, and a communication unit 108.

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

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

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

The reproduction unit 104 performs reproduction processing of the video / audio / data decoded by the decoding unit 103.

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

The recording unit 107 records various types of information. For example, the channel information acquired by the receiving unit 101, 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 the time is decoded and acquired by the decoding unit 103. When the transmission reference time to be performed or the determination process by the determination unit 115 described later is executed by the TV receiver 100, the determination result is stored.

The communication unit 108 is an interface for connecting to an external server or the like via a network, and can, for example, transmit information recorded in the recording unit 107 or acquire data from an external server.

The measuring device 110 is a so-called audience rating measuring device, that is, a device for identifying and determining a stream reproduced by the reproduction unit 104 of the TV receiver 100, and is a determination unit 115 (broadcast stream viewing time acquisition unit of the present invention, broadcasting). It is provided with a time difference calculation unit and a viewing determination unit) 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 from 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 from the time difference will be described in detail later. As for the function as an audience rating measuring device (the function of identifying and determining the reproduced stream), various existing methods can be adopted, and thus the description thereof will be omitted.

The clock 116 is an internal clock of the measuring device 110, and measures the time that becomes the viewing time of the stream.

The IP receiver 200 corresponds to a receiving unit 201, a buffer unit 202, a decoding unit 203, a playback unit 204, and a determination unit 205 (corresponding to the IP stream viewing time acquisition unit, IP time difference calculation unit, and viewing determination unit of the present invention). The clock 206, the recording unit 207, and the communication unit 208 are provided.

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

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

The decoding unit 203 performs a process of decoding the code of an information source such as video, audio, and data encoded by the code unit 23 of the IP broadcasting station 20. The decryption unit 203 also executes necessary processing such as extraction of key information necessary for decryption when encryption is performed at the time of encoding.

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

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

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

The clock 206 is an internal clock of the IP receiving terminal 200.

The 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 clocked by the clock 206, and the determination result of the determination process by the determination unit 205 is stored.

The communication unit 208 is an interface for connecting to an external server or the like via a network, and can, for example, transmit information recorded in the recording unit 207 or acquire data from an external server.

The totaling server 300 includes a totaling unit 305 and a storage unit 307, and via the totaling unit 305, the determination result of the case unit 115 of the determination machine 110 that does not follow the TV receiver 100 and the determination of the determination unit 205 of the IP receiving terminal 200. The results are totaled, and the totaled determination results are stored in the storage unit 307.

The above is the configuration of the stream viewing analysis system of this 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 device 110, the IP receiving terminal 200, and the aggregation server 300 is, for example, a CPU. It is composed of hardware such as (Central Processing Unit), ROM (Read Only memory), RAM (Random Access Memory), and stores a program that executes various processes described later in memory (not shown) and executes the program. By doing so, it functions as an arithmetic unit (sequencer) for executing various processes.

Further, the TV broadcasting station 10, the IP broadcasting station 20, the TV receiver 100, the measuring device 110, the IP receiving terminal 200, and a part or all of the aggregation server 300 are configured by another server (external server). However, a stream viewing analysis system may be realized by distributed processing.

Next, with reference to FIG. 2, the processing contents of the determination unit 115 of the measuring machine 110 and the determination unit 205 of the IP receiving terminal 200 will be described later.

First, as shown on the left side of FIG. 2A, the determination unit 115 identifies the played stream (channel / broadcast program) as an audience rating measuring device (for example, indirectly 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 played stream (channel / broadcast program).

The determination unit 115 as an audience rating measuring 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 is connected to the stream. The assigned transmission reference time (broadcast time) may be directly acquired.

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

The viewing time may be determined based on the time (internal clock) of the clock 116 of the measuring device 110, and when the measuring device 110 is connected via the communication unit 108 of the TV receiver 20, the viewing time may be determined. 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 (broadcast start time) of the stream transmission reference time.

In this way, by using the viewing start time as a reference, the broadcast time difference can be easily calculated, and the viewing of the stream whose broadcast time difference is within the range of the following predetermined determination threshold value can be easily and reliably determined. Can be done.

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

Specifically, when the broadcast time difference is smaller than the first threshold value, the determination unit 115 adopts an internal clock (reproduction time based on the clock 116 or the clock 106) as the viewing time. Here, the first threshold value is set as a range in which the time difference between the viewing time and the transmission reference time (broadcasting time) can be regarded as almost simultaneous (for example, about several seconds to 1 minute as the first threshold value).

Further, when the broadcast time difference is larger than the first threshold value and smaller than the second threshold value, the determination unit 115 adopts the transmission reference time (broadcast time) as the viewing time. Here, the second threshold value is set as a range in which the time difference between the viewing time and the broadcasting time can be regarded as being viewed at almost the same time (for example, about several minutes to 10 minutes as the second threshold value), although there is a slight time difference. Will be done.

Then, in these cases, that is, when the broadcast time difference is smaller than the first threshold value and larger than the first threshold value and smaller than the second threshold value, the time shift is performed based on the internal clock and the transmission reference time (broadcast time), respectively. Judgment is totaled as live viewing without being judged. The determination aggregation process will be described later in the aggregation server 300.

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

Specifically, the determination process by the determination unit 115 will be described with reference to 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 band shape in the figure is the viewing time based on the internal clock (terminal time in the figure).

First, the terminal ID X001 is the start time 18: of the broadcast time when the content name AAA (broadcast time 18:10-18:30) is viewed at the viewing time 18:10-18:30 of the internal clock. Since the broadcast time difference, which is the difference between 10 and the viewing start time 18:10 of the internal clock, is 0 and is determined to be smaller than the first threshold (1 minute), as shown on the right side of the figure, in this case, viewing is performed. The time is determined to be the viewing time of the internal clock 18: 10-18: 30.

Next, the terminal ID X002 has a viewing time of 18: 10.5 (18:10:30) -18: 30.5 (18:10:30) of the internal clock for the content name AAA (broadcast time 18:10-18:30). When viewing at 18:30:30), the difference in broadcast time, which is the difference between the start time of the broadcast time of 18:10 and the viewing start time of the internal clock of 18: 10.5, is 0 and the first threshold (1 minute). ), So even in this case, the viewing time is 18: 10.5 (18:10:30) -18: 30.5 (18:30:30) of the internal clock. It is judged.

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

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

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

Specifically, the determination unit 205 calculates the broadcast time difference of the viewed IP stream (similar to the determination unit 115) based on the viewing start time of the viewing time. 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 transmission reference time of the IP stream.

In this way, by using the viewing start time as a reference, the IP time difference can be easily calculated, and the viewing of the stream whose IP time difference is within the range of the following predetermined determination threshold value can be easily and reliably determined. Can be done.

Next, the determination unit 205 makes a viewing determination based on the determination threshold value (similar to the broadcast time difference of the determination unit 115) with respect to 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 value (similar to the broadcast time difference of the determination unit 115), the determination unit 205 adopts an internal clock (reproduction time based on the clock 206) as the viewing time.

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

Then, in these cases, that is, when the IP time difference is smaller than the first threshold value and larger than the first threshold value and smaller than the second threshold value, the time shift is performed based on the internal clock and the transmission reference time (broadcast time), respectively. Judgment is totaled as live viewing without being judged. The determination aggregation process will be described later in the aggregation server 300.

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

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

First, the terminal ID Y001 is the start time 18: of the broadcast time when 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 difference, which is the difference between 10 and the viewing start time 18:15 of the internal clock, is 5, which is 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, the terminal ID Y002 is for viewing the content name BBB (broadcast time 18: 10-18: 15) and the content name CCC (broadcast time 18: 10-18: 15), and for the content name BBB, viewing the internal clock. Time 18: 10.5 (18:10:30) -18: 15.5 (18:15:30), and the content name CCC will be described when viewed at 18: 16-18: 21. ..

Regarding the content name BBB, the difference in broadcast time, which is the difference between the start time of the broadcast time of 18:10 and the viewing start time of the internal clock of 18: 10.5, is 0.5, which is determined to be smaller than the first threshold (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 larger than the first threshold value (1 minute) and larger than the second threshold value (10 minutes). Since it is determined to be small, the viewing time is determined to be broadcast time 18: 10-18: 15 for the content name CCC.

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

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

Next, the terminal ID Y004 has a viewing time of 18: 10.5 (18:10:30) -18: 30.5 (18:10:30) of the internal clock for the content name AAA (broadcast time 18:10-18:20). When viewing at 18:30 (30 seconds) and (slowly at 0.5x speed playback), 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). The difference in broadcast time, which is the difference in seconds), is 0.5, which is determined to be smaller than the first threshold (1 minute). In this case, the viewing time is determined to be broadcast time 18: 10-18: 20. To.

In this case, the determination unit is set at 20 minutes when the viewing time measured from the internal clock is 18: 10.5 (18:10:30) -18: 18: 30.5 (18:30:30). Since the transmission reference time acquired in is 10 minutes from 18:10 to 18:20, it is also possible to acquire the double speed reproduction speed by calculating 10/20 = 0.5.

Next, the terminal ID Y005 is the start time 18 of the broadcast time when 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 difference in broadcast time, which is the difference between: 10 and the viewing start time of the internal clock at 18:25, is 15, which is determined to be larger than the second threshold (10 minutes). Therefore, it is determined to be time-shifted viewing, and the viewing time is broadcast. The time is 18: 10-18: 20.

The above is the details of the processing contents of the determination unit 115 of the measuring device 110 and the determination unit 205 of the IP receiving terminal 200, and which of the broadcast time difference and the IP time difference causes the determination result of the determination unit 115 and the determination unit 205. Regardless of this, it is aggregated by the aggregation server 300 as having the same quality.

That is, the totaling unit 305 of the totaling server 300 sets the broadcast time larger than the first threshold value and smaller than the second threshold value when the time difference (broadcast time difference and IP time difference) is smaller than the first threshold value and the time of the internal clock is adopted. 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 actual viewing condition as to whether or not the live viewing is performed.

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 condition, that is, the contact condition can be appropriately evaluated. ..

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

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

Further, in the stream viewing analysis system of the present embodiment, a case where the determination unit 115 of the measuring device 110 and the determination unit 205 of the IP receiving terminal 200 are separately provided and collectively aggregated by the aggregation server 300 has been described. However, these determination units (determination unit 115 and determination unit 205) may be integrated into one in the aggregation server 300.

Further, in the present embodiment, the time difference is calculated based on the viewing start time of the stream, but the time difference is not limited to this, and in addition to or instead of this, the intermediate time of the stream, the viewing end time, and the stream are used. The time difference may be calculated for the entire viewing time of the above, and the determination by the first threshold value and the second threshold value may be performed. In addition, the determination threshold value may be one of the first threshold value and the second threshold value, and other threshold values may be added for the determination.

10 ... TV broadcasting station, 11 ... TV broadcasting station transmission section, 13 ... TV broadcasting station code section, 16 ... TV broadcasting station clock, 17 ... TV broadcasting station stamping section, 20 ... IP broadcasting station, 21 ... Distribution section of IP broadcasting station, 23 ... Code section of IP broadcasting station, 26 ... Clock of IP broadcasting station, 27 ... Stamping section of IP broadcasting station, 100 ... TV receiver, 101 ... Receiver section of TV receiver, 102 ... TV receiver buffer section, 103 ... TV receiver decoding section, 104 ... TV receiver playback section, 106 ... TV receiver clock, 107 ... TV receiver recording section, 108 ... TV receiver communication. 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 playback unit, 205 ... IP receiving terminal Judgment unit, 206 ... IP receiving terminal clock, 207 ... IP receiving terminal recording unit, 208 ... IP receiving terminal communication unit, 300 ... totaling server, 305 ... totaling unit, 307 ... accumulating unit.

Claims (5)

In a stream viewing analysis system that analyzes the entire viewing of a stream in a stream transmission in which a broadcast stream transmission that transmits a stream via a broadcast and an IP stream transmission that transmits the stream via a network are executed.
A broadcast stream viewing time acquisition unit that acquires a broadcast stream viewing time, which is the viewing time of the stream based on the internal clock of the broadcast stream receiving means, from the broadcast stream receiving means that receives the stream via the broadcast.
An IP stream viewing time acquisition unit that acquires an IP stream viewing time, which is the viewing time of the stream based on the internal clock of the IP stream receiving means, from the IP stream receiving means that receives the stream via the network.
A broadcast time difference calculation unit that calculates a broadcast time difference, which is the difference between the transmission reference time of the stream and the broadcast stream viewing time acquired by the broadcast stream viewing time acquisition unit.
An IP time difference calculation unit that calculates an IP time difference, which is the difference between the transmission reference time of the stream and the IP stream viewing time acquired by the IP stream viewing time acquisition unit.
A viewing judgment unit that determines the viewing of the stream in which the broadcast time difference calculated by the broadcast time difference calculation unit and the IP time difference calculated by the IP time difference calculation unit are regarded as the same quality time difference and the time difference is within the range of a predetermined determination threshold value. A stream viewing analysis system characterized by being equipped with. In the stream viewing analysis system according to claim 1,
The broadcast stream viewing time acquisition unit acquires a broadcast stream viewing time including the viewing start time of the stream based on the internal clock of the broadcast stream receiving means, and the IP stream viewing time acquisition unit obtains the IP stream viewing time acquisition unit. Acquires the IP stream viewing time including the viewing start time of the stream based on the internal clock of
The broadcast time difference calculation unit calculates the broadcast time difference based on the viewing start time of the stream, and the IP time difference calculation unit calculates the IP time difference based on the viewing start time of the stream. Stream viewing analysis system. In the stream viewing analysis system according to claim 1 or 2.
When the time difference is smaller than the first threshold value, the viewing determination unit adopts the time of the internal clock of the broadcast stream receiving means or the internal clock of the IP stream receiving means of the time difference, and the time difference is the first. A stream viewing analysis system characterized in that when it is larger than one threshold value and smaller than a second threshold value larger than the first threshold value, it is determined 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 a stream transmission in which a broadcast stream transmission for transmitting a stream via a broadcast and an IP stream transmission for transmitting the stream via a network are executed.
A broadcast stream viewing time acquisition step of acquiring a broadcast stream viewing time, which is a viewing time of the stream based on the internal clock of the broadcast stream receiving means, from a broadcast stream receiving means that receives the stream via the broadcast.
An IP stream viewing time acquisition step of acquiring an IP stream viewing time, which is a viewing time of the stream based on the internal clock of the IP stream receiving means, from an IP stream receiving means that receives the stream via the network.
A broadcast time difference calculation step for calculating a broadcast time difference, which is a difference between the transmission reference time of the stream and the broadcast stream viewing time acquired in the broadcast stream viewing time acquisition step,
An IP time difference calculation step for calculating the IP time difference, which is the difference between the transmission reference time of the stream and the IP stream viewing time acquired in the IP stream viewing time acquisition step, and
A viewing judgment step of determining the viewing of the stream in which the broadcast time difference calculated in the broadcast time difference calculation process and the IP time difference calculated in the IP time difference calculation process are regarded as the same quality time difference and the time difference is within a predetermined determination threshold range. A stream viewing analysis method characterized by executing and. A program that analyzes the entire viewing of the stream in the stream transmission in which the broadcast stream transmission that transmits the stream via the broadcast and the IP stream transmission that transmits the stream via the network are executed.
On the computer
From the broadcast stream receiving means that receives the stream via the broadcast, the broadcast stream viewing time, which is the viewing time of the stream based on the internal clock of the broadcast stream receiving means, is acquired.
From the IP stream receiving means that receives the stream via the network, the IP stream viewing time, which is the viewing time of the stream based on the internal clock of the IP stream receiving means, is acquired.
The broadcast time difference, which is the difference between the transmission reference time of the stream and the acquired broadcast stream viewing time, is calculated.
The IP time difference, which is the difference between the transmission reference time of the stream and the acquired IP stream viewing time, is calculated.
A program characterized in that the calculated broadcast time difference and the IP time difference are set as the same quality time difference, and the viewing of the stream whose time difference is within the range of a predetermined determination threshold value is determined.

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