JP2003163850A - Playback control method for content stored in stream - Google Patents

Abstract

(57) [Summary] An object of the present invention is to provide a content playback control method capable of controlling content playback according to the playback time when a recorded digital broadcast program is played back. To provide. A content playback control method according to the present invention includes the steps of causing a broadcast terminal device to receive a broadcast stream including content related to a digital broadcast program and a content control script, and causing the broadcast terminal device to execute the content control script. When the content control script receives a content playback instruction, the content control script determines whether the content is the content received during the on-air or the content stored in the stream by the stream storage device. When it is determined that the content is stream-stored by the device, the content to be reproduced other than on-air is reproduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of controlling reproduction of stream-accumulated contents, and more particularly to a method of controlling reproduction of contents when digital broadcast program contents are stream-accumulated by a stream accumulator. .

[0002]

2. Description of the Related Art In recent years, with the development of digital technology, diversification of broadcasting services is in progress. For example, in digital broadcasting that is broadcast using broadcasting satellites, high-definition and high-quality high-definition programs and interactive programs have been gaining popularity with viewers. In such digital broadcasting, while a broadcasting station transmits video / audio broadcasting data and data broadcasting data as digital signals (streams) to a broadcasting terminal device of a viewer through a broadcasting satellite, a broadcasting terminal device of the viewer is transmitted. It is realized by demodulating the digital signal received by and output to a television receiver.

In addition, with the spread of digital broadcasting, a device for storing a stream of digital broadcasting programs has been developed and sold. Such a stream storage device is generally connected to the above-described broadcast terminal device, receives video / audio broadcast data and data broadcast data via the broadcast terminal device, and stores the stream. Therefore, for example, when a viewer is likely to miss a desired digital broadcast program on air (the day when the program is actually broadcast), the viewer may record the digital broadcast program using this stream storage device. Can be set.

[0004]

By the way, digital broadcast programs (contents) are often produced and broadcast on the premise of the day or time when the digital broadcast program is aired. For example, on weekdays and holidays, early morning and late night, spring and winter, the type of viewer (adult, child, male, female, etc.) and living environment (work or school on weekdays, leisure on holidays, etc.)
Is also different. Therefore, in order for more viewers to watch a digital broadcast program to be broadcast, it is necessary to produce and broadcast the program in consideration of the types of viewers and the living environment. Moreover, not only digital broadcast programs but also CMs inserted between programs are produced and broadcast assuming viewers. The time period for broadcasting the CM is set assuming the viewer at the time of broadcasting, so for example, CM for children is played in the early morning, CM for adults is played in the middle of the night, and spring is conscious of spring. It is often the case that the commercials that are played are played, and the commercials that are conscious of winter are played in the winter. In this way, the producer of the digital broadcast program manages the time when the digital broadcast program is broadcast,
The purpose is to broadcast more effective broadcast programs and commercials.

However, when a digital broadcast program is recorded by a viewer, it depends on the viewer's will as to how the viewer views the recorded digital broadcast program. That is, the recorded digital broadcast program is reproduced at an arbitrary time in the future from the time of on-air, and the person viewing the recorded digital broadcast program is also an arbitrary person in the future from the time of on-air. Therefore, in such a case, the digital broadcast program will be reproduced in a situation different from the situation predicted by the creator of the digital broadcast program. A broadcast program may be played in the middle of the night, or a CM broadcast in the summer may be played in the winter.

Therefore, when the digital broadcast program is recorded by the viewer, the digital broadcast program is reproduced in a situation different from the situation predicted by the producer of the digital broadcast program, so that the producer is the viewer. Assuming that it will be difficult to produce and broadcast digital broadcast programs,
There is a problem that the effect may not be obtained by the creator.

Therefore, according to the present invention, when a recorded digital broadcast program is reproduced at an arbitrary time in the future than when it is on-air, reproduction of the content can be controlled according to the reproduction time. It is an object to provide a reproduction control method.

[0008]

SUMMARY OF THE INVENTION A content reproduction control method according to the present invention comprises a step of causing a broadcast terminal device to receive a broadcast stream including content relating to a digital broadcast program and a content control script, and the content control script. The step of causing the broadcast terminal device to execute, the content related to the digital broadcast program is composed of video and audio data and / or data broadcast data, and is reproduced at a time other than the first content to be reproduced at the time of on-air and the first content to be reproduced at the time of on-air. When the content control script receives a content reproduction instruction, the content control script determines whether the content is the content received during on-air or the content accumulated by the stream accumulating device. Or Determination and, when it is determined that the content streamed accumulated by said stream storage unit is characterized by reproducing the second content.

The term "on-air" in the present invention means
It means the time determined based on the time management information included in the broadcast stream.

Further, the content control script is
The first time information regarding the reception time of the broadcast stream is acquired, the second time information regarding the reproduction time of the content is acquired, and the difference between the first time information and the second time information is acquired. When the value is out of the predetermined range, it is desirable to determine that the content is the content stored in the stream by the stream storage device.

Further, the content control script is
It is desirable to control reproduction of the second content based on the second time information. Further, it is preferable that the content control script includes a content reproduction condition based on time information, and controls reproduction of the second content based on the content reproduction condition and the second time information.

Further, the content control script is composed of data broadcasting data, the second content is composed of at least one of video data, audio data and data broadcasting data, and the content control script is composed of When it is determined that the content is stream-stored content by the stream storage device, it is desirable to reproduce at least one of the video data, the audio data, and the data broadcast data.

Further, the content reproduction control method according to the present invention comprises the steps of receiving a broadcast stream including content related to a digital broadcast program and a content control script, and executing the content control script. The content related to the digital broadcast program is composed of a first content to be played when it is on-air and a second content that is to be played when it is not on-air. Is determined to be the content received at the time of on-air or the content accumulated in the stream by the stream accumulation device, and when it is determined that the content is stream accumulated in the stream accumulation device, 2's And wherein the to play the content.

Further, the present invention is a content control script executed by a broadcasting terminal device, wherein, when the content control script receives an instruction to reproduce the content, whether the content is the content received during on-air, When it is determined whether the content has been stream-stored by the stream storage device, and when it is determined that the content has been stream-stored by the stream storage device, the content to be played at the time of on-air is replaced by a content other than at the time of on-air. It is characterized in that the content to be reproduced is reproduced.

Further, the present invention is a content control script executed by a broadcasting terminal device, wherein the content control script, when receiving a content reproduction instruction, obtains first time information relating to the time of reception of the content. In addition, the second time information regarding the reproduction time of the content is acquired, and the first time information and the second time information are acquired.
When the difference value from the time information of is outside the predetermined range, the reproduction of the content to be reproduced at a time other than the on-air time is controlled based on the second time information.

According to the present invention, when a content reproduction instruction is received, it is determined whether the content is received on-air or stream-accumulated by the stream accumulator, and the content is stream-accumulated. If it is determined that the content is to be played back at an arbitrary time in the future than when it is on-air, the playback is controlled based on the time information at the time of playback (current time at the time of playback). However, it becomes possible to reproduce the content according to the situation at the time of the reproduction.

Further, in the case of reproducing the content accumulated in the stream, the content not reproduced during the on-air can be reproduced based on the time information at the time of reproduction (current time at the time of reproduction). Be able to diversify.

The present invention may be configured as a data broadcasting content or a program (script) that realizes a predetermined (means) function when executed by a broadcasting terminal device, and further as a storage medium that stores this. it can.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment] FIG. 1 is a diagram for explaining an outline of a system for realizing a digital broadcasting service according to the present invention. In FIG. 1, the broadcasting station 1 is provided with a broadcasting device (not shown), and is configured to be able to transmit digital data (content data) forming a television broadcasting program or a data broadcasting program to the broadcasting terminal device 2 of each viewer (user). Has been done. In this embodiment, the television broadcast program is composed of video data and audio data, and the data broadcast program is composed of data broadcast data. Also, MPEG2
-It is assumed that various digital data are transmitted as a stream by using the TS. The broadcast terminal device 2 has a function of receiving and demodulating digital data carried as broadcast waves and providing it to the viewer as a broadcast program, and is connected to a stream storage device (not shown) to receive the received digital data from the stream storage device. While sending to
It has a function of receiving digital data transmitted from the stream storage device. The broadcast terminal device 2 is typically a set top box (STB) used together with a television receiver or a television receiver having a built-in digital broadcast receiving function.

In this embodiment, the repeater mounted on the broadcasting satellite uses a band for transmitting digital data as a band.
For example, three bands for transmitting video and audio data,
And one band for transmitting data for data broadcasting.

FIG. 2 is a block diagram showing the system configuration of the broadcasting station 1 according to this embodiment. The video / audio data production device 201 converts video data (video data) and audio data (audio data) in a digital format relating to a certain television broadcast program, which are transmitted from a video camera, a video server, or the like (not shown), into a video / audio data encoder (hereinafter referred to as “video / audio data encoder”). (Referred to as "audio / video data encoder") 204. Here, video data and audio data are treated as one data unless otherwise specified, and this is referred to as video / audio data.

The data broadcast production device 202 outputs content data for data broadcast (hereinafter referred to as "data broadcast data") to the data broadcast data encoder 205. The data broadcast data is composed of text data, image data (still image / moving image data), audio data, script (control program), display object data, and the like. The script is, for example, BM
It is embedded to describe program processing in an L, B-XML or Java document. The video data is
It is synonymous with video data, but is used in a sense to be distinguished from video data in television broadcasting. The data broadcast data is created based on video / audio data and other digital data using an authoring terminal device (not shown), and is stored in a file server or the like.

The broadcast management device 203 instructs the video / audio data production device 201 and the data broadcast production device 202 to transmit the video / audio data and the data broadcast data according to the information on the program organization. Broadcast management device 20
3 also sends various information necessary for running the program to the control information sending device 207.

The video / audio data encoder 204 compresses the video / audio data sent from the video / audio production apparatus 201 under the control of the broadcast management apparatus 204 according to MPEG2 video and MPEG2 audio to generate a video / audio stream. Video and audio data encoder 20
4 sends the generated video and audio stream in the PES format to the multiplexing unit 208. Data broadcasting data encoder 2
Reference numeral 05 compresses and encodes the data broadcast data transmitted from the data broadcast production apparatus 202 under the control of the broadcast management apparatus 203, and generates a data broadcast stream. The data broadcast data encoder 205 sends the generated data broadcast data to the multiplexing unit 208 in the section format.

The control information transmission device 207 generates control information based on various information transmitted from the broadcast management device 203. The control information is PSI / SI (Program Specific I
nformation / Service Information).
The control information sending device 207 sends the control information in the section format to the multiplexing device 208.

The multiplexer 208 multiplexes the PES format video / audio stream, the data broadcast stream, and the section format control information into an MPEG2-transport stream (MPEG2-TS; hereinafter referred to as "multiplex stream"). To generate. Multiplexer 208
When the multiplexed stream is generated, the time superimposition information and the like are further superimposed and the information to be concealed is scrambled. The multiplexer 208 sends the generated multiplexed stream to the digital modulator 209.

The digital modulator 209 digitally modulates the multiplexed stream by a predetermined modulation method, and the transmitter 210
Send this to. As the predetermined modulation method, for example,
The 8PSK method, the OFDM method, and the like are included. The transmitter 210 transmits the digitally modulated stream as a broadcast wave signal to a relay station, for example, a broadcasting satellite.

A radio repeater called a transponder is mounted on the broadcasting satellite. This transponder
When a broadcast wave signal transmitted from a broadcast station is received, the broadcast wave signal is amplified, the uplink frequency is converted to the downlink frequency, and the broadcast frequency signal is transmitted to the viewer's broadcast terminal device. Here, since one transponder can transmit digital data in, for example, four bands by adopting a compression technique according to MPEG-2, in the present embodiment, for example, in transmitting video / audio data, Three bands are used, and one band is used for transmitting data for data broadcasting.

FIG. 3 shows the broadcasting terminal device 2 according to this embodiment.
It is a figure which shows the structural example of the receiving system comprised including. This system includes an antenna 30 for receiving broadcast radio waves transmitted from the broadcasting station 1 shown in FIG.
1, a set top box 302 that selects and decodes the received stream, an output device 303 that outputs video and audio based on the decoded video and audio data, and a stream that the set top box 302 receives. The stream storage device 304 and the remote controller 305 that allows the user to operate the stream storage device 304.

In the broadcast terminal device 2 shown in the figure, the set top box 302, the output device 303, and the stream storage device 304 are separately configured, but they can also be appropriately configured as an integrated broadcast terminal device 2. . For example, the set top box 302 and the output device 303 may be integrated, or the set top box 302 and the stream storage device 304 may be integrated. The output device 303 typically corresponds to a television receiver and outputs video and audio based on a video / audio signal input from the outside through an input terminal. The stream storage device 304 is a hard disk device or, for example,
A D-VHS (Data Video Home System) type video tape recorder or the like is applicable, and is provided with an interface (for example, IEEE 1394) for transmitting and receiving a digital video signal to and from the set top box 302. The remote controller 305 is, for example, power ON / OF.
An F button, a record button for recording a digital broadcast program, a play button, and the like are provided, and the stream storage device 30 is provided.
The operation receiving unit 4 receives the infrared signal corresponding to the button pressed by the user. In addition, the remote controller 30
As an alternative to 5, an operation panel may be configured on the front part of the device.

Based on such a configuration, a flow when the user records and reproduces a program by the digital broadcasting service will be briefly described. First, when the user presses the record button of the remote controller 305, the stream storage device 304 that accepts the record button sends an instruction to send stream data to the set top box 302, and the stream data received by the set top box 302 becomes IEEE 1394. It is transferred to the stream storage device 304 via the interface. Upon receiving the stream data, the stream storage device 304 stores the received stream data as it is as digitally modulated stream data. When the user selects the play button of the remote controller 305, the stream storage device 304 accepting the play button issues a stream data playback instruction to the set top box 3.
02 and the stream storage device 304
Stream data is transferred to the set top box 302 via the IEEE 1394 interface from
After being converted into an analog signal by the set top box 302, it is displayed on the screen of the output device 303.

FIG. 4 shows a broadcasting terminal device 2 according to this embodiment.
2 is a schematic diagram showing the hardware configuration of FIG. The broadcast terminal device 2 typically has a reception function, a storage function, a communication function, and a presentation function.

In the figure, the controller 401 is a C
A PU 4011, a RAM 4012, a ROM 4013 and a flash memory 4014 are provided, which are mutually connected via a bus. This controller 401
It controls the entire operation of the broadcasting terminal device 2 and realizes various functions in combination with other hardware components. In this embodiment, the content control script included in the stream is executed.

The tuner 402 selects a broadcast wave signal corresponding to a specific transponder from broadcast wave signals supplied from an antenna (not shown), and a digital demodulation section 403.
Send to. The digital demodulation unit 403 demodulates the selected broadcast wave signal to be transmitted by a predetermined demodulation method, performs a predetermined error correction process, and then outputs the signal to the TS decoder 404. The signal transmitted from this digital demodulation unit 403 is
This corresponds to the multiplexed stream described above. TS
The decoder 404 separates the transmitted multiplexed stream into individual streams, and the MPEG-AV decoder 405.
Send to. This stream can be viewed as a series of TS packets. The MPEG-AV decoder 405 decodes the transmitted audiovisual stream according to MPEG2 video and MPEG2 audio, and outputs it to an output device.

The sound controller 406 is the controller 4
Under the control of 01, an additional sound is generated based on various sound data. The generated additional sound is superimposed (combined) with the audio data sent from the MPEG2-AV decoder 405 and output from the output device (speaker).

The OSD controller 407 is the controller 40.
Under the control of 1, the text data and the image data that form the data broadcast data are generated. These generated data are superposed on the video data sent from the MPEG2-AV decoder 405.

The external recording device I / F 408 is an interface for connecting to the above-mentioned stream storage device 304. As described above, the external recording device I / F 408 stores the digital video signal in the stream storage device 304.
An IEEE 1394 interface or the like for transmitting / receiving data to / from is applicable. The external recording device may be, for example, a D-VHS, a hard disk device or a DVD-RW.
A (DVD-RAM) device, a solid-state memory (for example, "smart media" or "memory stick"), etc. are also applicable.

The IC card I / F 410 is an interface for connecting to an IC card that stores predetermined information. The IC card stores, for example, the personal information of the viewer, the descrambling key, and the like.

In the system configured as described above, according to the present embodiment, when the broadcast terminal device 2 receives a content reproduction instruction, it is determined whether the content is the content received during on-air or the stream storage device 3.
04, it is determined whether or not the content is stream-accumulated, and when it is determined that the content is stream-accumulated by the stream accumulator 304, reproduction of the content is controlled based on the reproduction time. . The content control script for causing the broadcast terminal device 2 to realize such control is typically configured as a part of the data broadcast content. Hereinafter, a flow of processing when the set top box 302 executes the content control script will be specifically described.

FIG. 5 is a flowchart showing an example of the content reproduction process according to this embodiment. In the present embodiment, it is assumed that the viewer is recording the content (digital broadcast program) in the stream storage device 304 as a premise of the content reproduction processing. Then, when a viewer who wants to play back the recorded content selects the play button of the remote controller 305 to input a play instruction to the stream storage device 304, the stream storage device 304 accepts this and the content is stored. Of the reproduction instruction and the contents accumulated in the stream are transmitted to the set top box 302 (STEP 50).
1).

When the set top box 302 receives a content playback instruction and stream-stored content from the stream storage device 304, it executes a content control script to check the playback state of the content. That is, it is checked whether the content currently transmitted from the broadcasting station 1 is reproduction (direct reproduction) or the content stored in the stream is reproduction (recording reproduction) (STEP 502).

FIG. 6 is a flow chart for explaining the process of checking the reproduction state of the contents shown in STEP 502. That is, the set top box 30
2 acquires the time when the content was actually received from the broadcasting station 1 (time of reception) (STEP 60).
1) The time at which the reproduction instruction of the content is accepted is acquired (STEP 602). The reception time can be acquired by referring to the time management information included in the transmitted content, and the reproduction time can be acquired by a timer function that manages the current date and time of the set top box 302. can do. Next, the set top box 302 obtains the difference between the obtained reception time and reproduction time and determines whether or not the value is within a predetermined range (STEP 603).
That is, when the viewer is viewing the content by direct reproduction, the values at both times are the same. However, in this example, in consideration of the system delay and the like due to the transmission error correction, if the difference value is within ± 15 seconds, it is regarded as direct reproduction. Set top box 302
When determining that the difference value is within the predetermined range,
Set the on-air flag to "true" (STEP60
4) On the other hand, when it is judged that it exceeds the predetermined range,
Set the on-air flag to "false" (STEP60
5).

Returning to STEP 503 in FIG. 5, the description will be continued. After finishing checking the reproduction state, the set top box 302 determines whether the reproduction of the content is on-air. That is, based on the value of the on-air flag, it is determined whether or not the reproduction of the content is direct reproduction (STEP 503). And
When the set top box 302 determines that the value of the on-air flag is “true”, the set-top box 302 executes the process at the time of on-air (STEP 504), while determining that the value of the on-air flag is “false”. In this case, the set top box 302 executes the process at the time of recording (STE
P505). The process during on-air is a process for reproducing the content that should be reproduced during on-air.

FIG. 7 is a flow chart showing the flow of processing at the time of recording shown in STEP 505. In the present embodiment, it is assumed that the condition n set to switch a plurality of contents according to the playback time and the hourly processing n according to the condition n are set in advance. When the stream is the reproduction of the recorded stream, the set-top box 302 determines whether the reproduction time acquired in STEP 602 is one of the preset first to nth conditions. It is determined whether or not they match (S
TEP701). And set top box 302
Executes the first time-based processing (STEP 702) if it determines that the first condition is met, and executes the second time-based processing if it determines that the second condition is met. (STEP 703) Similarly, if it is determined that the condition meets the nth condition, the nth time-based process is executed (ST).
EP 704).

The contents of the first condition to the n-th condition can be arbitrarily set on the basis of the time information. For example, the time when the stream is reproduced, the month and day, and the combination of the time and the month and day, etc. Can be set. The first time-based processing to the n-th time-based processing typically define processing for switching the content to be played back in accordance with the first condition to the n-th condition. For example, the content is played back. A process of switching CM content, switching a part of a program to be reproduced, or the like is applicable. Hereinafter, the contents of the first condition to the nth condition and the contents of the first time-based process to the nth time-based process will be specifically described.

FIG. 8 is a flowchart showing the flow of processing in the case of switching the CM content according to the reproduction time. In FIGS. 8 and 9, when there is content for displaying a still image advertisement in the CM, a case of selecting the still image to be played according to the playback time when playing the stream-stored content will be described. To do. According to this, even when the content is played at an arbitrary time in the future than when it is on-air, by preparing in advance a still image that assumes the arbitrary playback time by the viewer, the situation of the viewer can be improved. It becomes possible to provide the corresponding CM content.

The set top box 302 first determines whether or not the reproduction time matches the first condition (2001/9/1 to 2001/9/31) (STEP 801), and when it determines that they match. The first content is displayed in (STE
P802). Specifically, the first still image (CM data)
Select to play. On the other hand, when it is determined that the first condition is not met, the playback time is the second condition (2001/10 /
(1 to 2001/10/30) is judged (STEP
803), if it is determined that they match, the second content is displayed (STEP 804). Specifically, the second
Select and play the still image (CM data). Similarly,
The set top box 302 determines whether or not the playback time matches the third condition (2001/11 / 1-) (STE
P805), if it is determined that they match, the third content is displayed (STEP806). Specifically, the third still image (CM data) is selected and reproduced.

FIG. 9 shows an example of the screen at this time. As shown in the figure, when on air, that is, when OA (20
The first CM data (still image) is being played on September 1, 2001), while recording and playback (October 25, 2001) is:
Since the second condition (2001/10/1 to 2001/10/30) is met, the second CM data (still image) is reproduced. In the present embodiment, the still image to be reproduced during on-air and the still image to be reproduced when the first condition during recording / reproduction are set as the same first data. It may be set so that the still image to be reproduced sometimes and the still image to be reproduced at the time of recording / reproduction do not match at all.

According to this embodiment, the CM data can be switched according to the reproduction time of the recorded content. Therefore, for example, the first CM data may be data of a product that is newly released during the period of the first condition, and the second CM data may be data of a product that is newly released during the period of the second condition. For example, even when the user views the recorded content, the CM data of the newly released product is displayed on the screen when the user views the recorded content, so that the CM data can be displayed according to the period or time when the appeal effect is high. You will be able to view.

[Second Embodiment] Next, a second embodiment will be described. In the first embodiment, a case has been described in which the CM content (still image) is switched according to the playback time, but in the second embodiment, a case in which the main program (background image) is switched according to the playback time. explain. The hardware configuration of the second embodiment is the same as that of the first embodiment, and therefore its explanation is omitted.

FIG. 10 is a diagram showing an example in which the background image of the main program data is switched according to the reproduction time.
The content control script according to the present embodiment determines which of the seasons (spring, summer, autumn, and winter) the playback time of the recorded stream corresponds to, and the background image of the program according to each season (spring, summer, autumn, and winter). It is characterized by selecting and reproducing.

As shown in FIG. 10, in the present embodiment, background images respectively corresponding to "spring", "summer", "autumn" and "winter" are prepared in advance in the stream. When the set top box 302 receives a content reproduction instruction and stream-stored content from the stream storage device 304, the set-top box 302 executes the content control script. That is, when it is determined that the reproduction time corresponds to the first condition to the fourth condition (spring, summer, autumn, winter), and the reproduction time corresponds to the first condition (spring), Reproduces the first background image (spring background image) as the background of the main program data. On the other hand, when the set-top box 302 determines that the reproduction time corresponds to the second condition (summer), the set-top box 302 displays the second background image (background image of summer) as the background of the main program data. The set top box 302 also performs similar processing under the third condition (fall) and the fourth condition (winter). As shown in the figure, at the time of OA (September 1, 2001: Autumn), the background image of Autumn is being reproduced, while recording / reproduction (Spring / Summer / Winter).
, A background image (spring background image, summer background image, winter background image) corresponding to each reproduction time is reproduced.

According to the present embodiment, when the recorded content is played back, the same main program as when it is on-air is played, while the image forming the background of the main program is the image corresponding to the time of recording and playback. Is displayed. Therefore, it is possible to provide a broadcast program that matches the viewer's viewing time, and to diversify the rendering method by playing back the content different from that during the on-air period.

[Third Embodiment] Next, a third embodiment will be described. In each of the above-described embodiments, the case where the CM content (still image) or the background image of the main program is switched according to the reproduction time has been described, but in the third embodiment, a part of the main program (video and audio data). The case of switching between will be described. Note that the hardware configuration of the third embodiment is the same as that of the first embodiment, so description thereof will be omitted.

FIG. 11 is a diagram showing an example in which a part (video and audio data) of the main part of the program is switched according to the reproduction time. The content control script according to the present embodiment determines which of the predetermined time zones (am, pm, and midnight) the playback time of the recorded content corresponds to, and determines whether the playback time of the recorded content corresponds to the corresponding time zone. It is characterized by switching a part of the main program (video and audio data).

As shown in FIG. 11, in this embodiment, 3
One video / audio data is prepared in advance in the stream. When the set-top box 302 receives a content playback instruction and a stream-stored content from the stream storage device 304, the set-top box 302 executes the content control script, and the playback time is the first to third conditions (am, pm, Judgment which condition (midnight) is applicable. Then, when it is determined that the reproduction time corresponds to the first condition (am), the first video / audio data is reproduced, while the reproduction time is determined to correspond to the second condition (pm). In this case, the second video / audio data is reproduced, and when it is determined that the reproduction time corresponds to the third condition (midnight), the third video / audio data is reproduced. As shown in the figure, at the time of OA (September 1, 2001), the first video / audio data is being played, while at the time of recording / playing (20:00 on XX month), the program is The third video / audio data is reproduced in a part of.

According to this embodiment, when playing back a recorded program, a part of the program can be played back by switching between on-air and recording / playback. Therefore, for example, when the program is a story program, different stories can be developed during on-air and during recording / playback, and when the program is a quiz program, questions and answers of the quiz can be changed. Therefore, the production method can be further diversified.

It should be noted that the standards and the like adopted in the above embodiment can be arbitrarily changed according to the appearance of new standards. For example, in the above embodiment, M
Although various digital data are transmitted as a stream using PEG2-TS, MPEG4 or MPEG7 can also be used.

In the above embodiment, the BS (broadcast satellite) digital broadcasting service has been described as an example of the digital broadcasting service, but the present invention is not limited to this.
For example, it can be applied to a CS (communication satellite) digital broadcasting service and a terrestrial digital broadcasting service. In the case of the terrestrial digital broadcasting service, the broadcasting terminal device 2 receives the data for video / audio broadcasting and the data for data broadcasting via the relay device mounted on the broadcasting antenna instead of the broadcasting satellite.

[Other Embodiments] The above embodiments are
It is an example for explaining the present invention and is not intended to limit the present invention only to these embodiments. The present invention can be implemented in various forms without departing from the gist thereof.

(1) In the above embodiment, the contents are switched based on the time information, but the present invention is not limited to this. Therefore, in addition to the time information, the content of the content to be displayed may be changed depending on the age and sex of the viewer. In this case, it is preferable that the predetermined information be input in advance in the broadcast terminal device or that the viewer input the information when reproducing the content.

(2) In addition, if the content to be reproduced during on-air and the content to be reproduced during recording / reproduction are associated in advance and the recorded content is reproduced by the viewer, it is related to the content reproduced during on-air. The content to be reproduced may be reproduced. For example, if the content is a story program, play the story that is the continuation of the on-air during recording / playback, or if the content is a quiz program, play the answer to the question played during the on-air. You can also

(3) Furthermore, it is possible to associate a plurality of contents to be reproduced at the time of recording / reproducing with each other and to present the reproducing condition of each content to the viewer. When the viewer plays back the recorded content based on the presented condition, the content (A, B, C) is played back according to the playback time (a, b, c). You will be able to play the programs you have done as if you were on air.

[0065]

According to the present invention, when the content stored in the stream is reproduced, the reproduction of the content is controlled on the basis of the time information at the time of reproduction. Even when the content is played back at an arbitrary time, the content can be played back according to the situation at the time of the playback.

Further, in the case of reproducing the contents accumulated in the stream, the contents which have not been reproduced during the on-air can be reproduced, so that the production method can be diversified.

[Brief description of drawings]

FIG. 1 is a diagram for explaining an outline of a system that realizes a digital broadcasting service according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a system configuration of a broadcasting station according to an embodiment of the present invention.

FIG. 3 is a diagram showing a configuration example of a reception system including a broadcast terminal device 2 according to an embodiment of the present invention.

FIG. 4 is a schematic diagram showing a hardware configuration of a broadcast terminal device 2 according to an embodiment of the present invention.

FIG. 5 is a flowchart showing an example of content reproduction processing according to an embodiment of the present invention.

FIG. 6 is a flowchart showing an example of content reproduction processing according to an embodiment of the present invention.

FIG. 7 is a flowchart showing an example of content reproduction processing according to an embodiment of the present invention.

FIG. 8 is a flowchart showing a flow of content reproduction processing (processing for switching CM content according to reproduction time) according to the embodiment of the present invention.

FIG. 9 is a diagram showing an example of content switching according to an embodiment of the present invention.

FIG. 10 is a diagram showing an example of content switching according to an embodiment of the present invention.

FIG. 11 is a diagram showing an example of content switching according to an embodiment of the present invention.

[Explanation of symbols]

1 ... Broadcasting station 2 ... Broadcast terminal device 201 ... Video / audio production device 202 ... Data broadcasting production device 203 ... Broadcast management device 204 ... Video / audio data encoder 205 ... Data broadcast data encoder 207 ... Control information sending device 208 ... Multiplexing unit 209 ... Digital modulator 210 ... Transmitting device 301 ... antenna 302 ... Set top box 303 ... Output device 304 ... Stream storage device 305 ... Remote controller

Continued front page    (72) Inventor Shingo Kusunoki             5-3-3 Akasaka, Minato-ku, Tokyo TBS Hall 9             Floor (72) Inventor Takayuki Katsumata             5-3-3 Akasaka, Minato-ku, Tokyo TBS Hall 9             Floor F-term (reference) 5C025 AA30 BA14 BA25 BA27 BA30                       DA01 DA10                 5C052 AA00 CC06 DD04 DD10 EE10

Claims (8)

[Claims] 1. Content relating to a digital broadcast program,
A step of causing a broadcast terminal device to receive a broadcast stream including a content control script; and a step of causing the broadcast terminal device to execute the content control script, wherein the content related to the digital broadcast program is audiovisual data and / or The content control script is composed of data broadcasting data, and is composed of a first content to be reproduced during on-air and a second content to be reproduced except during on-air. If it is determined whether the content has been received during the on-air operation or the content has been stream-accumulated by the stream accumulating device, and the content has been stream-accumulated by the stream accumulating device, the second Content reproduction control method, characterized in that the content is reproduced. 2. The content control script acquires first time information regarding a reception time of the broadcast stream, and second time information regarding a reproduction time of the content, and acquires the first time information. 2. The method according to claim 1, wherein when the difference value between the information and the second time information is out of a predetermined range, the content is determined to be the content that has been stream-stored by the stream storage device. Content playback control method. 3. The content reproduction control method according to claim 1, wherein the content control script controls reproduction of the second content based on the second time information. 4. The content control script comprises content reproduction conditions based on time information, and controls reproduction of the second content based on the content reproduction conditions and the second time information. The content reproduction control method according to claim 3. 5. The content control script is composed of data broadcasting data, the second content is composed of at least one data of video data, audio data and data broadcasting data, and the content control script is composed of: 2. When the content is determined to be the content that has been stream-stored by the stream storage device, at least one of the video data, the audio data, and the data broadcast data is reproduced. 4. A method for controlling reproduction of any one of the contents. 6. A step of receiving a broadcast stream including content related to a digital broadcast program and a content control script; a step of executing the content control script.
The content related to the digital broadcast program comprises a first content to be reproduced during on-air and a second content to be reproduced during a time other than on-air, and the step of executing receives a reproduction instruction of the content. And whether the content is the content received during on-air or the content that has been stream-stored by the stream storage device, and when it is determined that the content has been stream-stored by the stream storage device. Is a method for controlling reproduction of content, comprising reproducing the second content. 7. A content control script executed by a broadcasting terminal device, wherein, when the content control script receives a content reproduction instruction, whether the content is a content received during on-air, When it is determined whether the content is stream-accumulated content, and when it is determined that the content is stream-accumulated by the stream accumulating device, the content is reproduced at a time other than the on-air time instead of the content to be reproduced at the on-air time. A content control script that reproduces the desired content. 8. A content control script executed by a broadcast terminal device, wherein the content control script, when receiving an instruction to reproduce the content, acquires first time information regarding a reception time of the content, and
The second time information regarding the reproduction time of the content is acquired, and based on the second time information when the difference value between the first time information and the second time information is out of a predetermined range. A content control script that controls the reproduction of content that should be reproduced except when it is on-air.