JP7250061B2 - Video receiving device and video receiving method - Google Patents

Description

The present embodiment relates to a video receiving device and a video receiving method for receiving video.

2. Description of the Related Art In recent years, the spread of broadband Internet connection environments to general households has been remarkable, and VOD (Video On Demand) services for receiving and viewing video contents via communication are spreading. As an extension of this trend, there is a broadcast-communication cooperation service in which video via communication and video via broadcasting (related video) are combined to form a single program and provided to viewers. Technical studies and standards are being developed for the provision of broadcast and communication cooperation services.

In the broadcast-communication cooperation service, since video via broadcasting and video via communication are configured as an integrated program in terms of content, there may be cases where the video via broadcasting alone does not make sense as a program.

When a viewer views a program in real time (views it at the time of broadcasting), it is guaranteed by the broadcaster that, among the videos constituting the program, the video via communication can be obtained from the server.

JP 2006-345495 A

However, when a viewer wants to view a program after the broadcast ends, video via communication is not necessarily guaranteed by the broadcaster for reasons such as server management and program rights processing.

Therefore, when the viewer records the program on the receiving device and tries to reproduce and view the program after the broadcast ends, there is a possibility that the viewer cannot obtain the necessary related video via communication. Therefore, the program that does not include related videos may become meaningless and may confuse viewers.

In order to solve this problem, for example, a technique is conceivable in which the receiving device records video via communication in addition to video via broadcasting. However, this approach requires the receiving device to have a larger storage capacity and is not efficient.

SUMMARY OF THE INVENTION An object of the present invention is to provide a video receiving apparatus and a video receiving method that improve the reproducibility of a program in which broadcast video and communication video are interlocked.

The broadcast wave stream received by the video receiving device in this embodiment includes a URL for accessing the reproduction control file and the broadcast video.
This video receiver receives a broadcast wave stream and records broadcast video. After the video recording is completed, the video receiving device accesses the reproduction control file to receive the communication video, and displays the program composed of the communication video and the recorded broadcast video.

1 is a schematic block diagram of a video transmission/reception system according to an embodiment; FIG. FIG. 4 is a view of a display screen in the video reception device according to the embodiment; FIG. 5 is a diagram showing program recording processing in the video receiving apparatus according to the embodiment; 4 is a flowchart of program recording processing in the video receiving device according to the embodiment. 4 is a flowchart of processing for displaying recorded titles in the video receiving device according to the embodiment. FIG. 4 is a view of a display screen in the video reception device according to the embodiment; FIG. 4 is a view of a display screen in the video reception device according to the embodiment;

Hereinafter, this embodiment will be described with reference to the drawings. FIG. 1 is a schematic block diagram of a video transmission/reception system 1 according to this embodiment. The video transmission/reception system 1 includes a video reception system 10 , a broadcast transmission device 20 and a program server 30 .

A configuration of the video reception device 10 will be described. The video receiving apparatus 10 includes a CPU (Central Processing Unit) 101, a control software ROM (Read Only Memory) 102, a RAM (Random Access Memory) 103, a storage section 104, a clock 105, a broadcast receiving section 106, a decoder 107, a communication IF ( interface) 108 and a display unit 109 . The video receiving device 10 is, for example, a television, but is not limited thereto. The video receiving device 10 has a function of receiving video transmitted via broadcast waves (hereinafter referred to as video via broadcast or broadcast video), and video transmitted and received via a communication network (hereinafter referred to as video via communication or communication). It is sufficient if both of the functions for receiving the video) are provided. In this embodiment, the communication video is a related video that constitutes the program together with the broadcast video in the program provided by the broadcast-communication cooperation service (hereinafter referred to as the broadcast-communication cooperation program).

The CPU 101 controls the operation of each element of the video reception device 10 . The CPU 101 includes acquisition means 101a, recording control means 101b, display control means 101c, and reproduction control means 101d. Acquisition means 101a has a function of acquiring various information from broadcast waves, as will be described later. The recording control means 101b has a function of recording and controlling broadcast video, as will be described later. The display control means 101c has a function of controlling the display of various messages, as will be described later. The reproduction control means 101d has a function of controlling reproduction of recorded broadcast video, as will be described later. The control software ROM 102 stores a control program which is the content of processing executed by the CPU 101 . A RAM 103 is a work area necessary for the CPU 101 to execute processing.

The storage unit 104 functions as storage means for storing various types of information. Various types of information are written to and read from the storage unit 104 by the CPU 101 . A clock 105 keeps track of the current date and time. The broadcast receiving unit 106 receives, via the antenna 11, a broadcast wave (broadcast signal, also referred to as a stream) including a broadcast video that constitutes a program currently being broadcast on a channel selected by the user. The broadcast receiving unit 106 functions as receiving means for receiving broadcast video that constitutes a program. A decoder 107 decodes broadcast video and audio contained in the stream. When recording a program, broadcast video and audio are recorded in storage unit 104 by CPU 101 . Incidentally, in the present embodiment, broadcast video recorded in the storage unit 104 is referred to as recorded broadcast video.

The communication IF 108 is an interface that transmits and receives various information via the communication network 40 . The communication IF 108 receives from the program server 30 via the communication network 40 communication video that constitutes a program together with broadcast video (or recorded broadcast video). The communication IF 108 functions as receiving means for receiving communication video.

The display unit 109 functions as display means for displaying various information. For example, the display unit 109 displays both broadcast video (or recorded broadcast video) and communication video.

A configuration of the video transmission device 20 will be described. The video transmission device 20 is, for example, a device provided by a broadcasting station. The video transmission device 20 includes a CPU 201 , a control software ROM 202 , a RAM 203 , a storage section 204 and a broadcast transmission section 205 .
The CPU 201 controls the operation of each element of the video reception device 20 . The control software ROM 202 stores a control program, which is the content of processing executed by the CPU 201 . A RAM 203 provides a work area necessary for the CPU 201 to execute processing. The storage unit 204 stores various information. Various types of information are written to and read from the storage unit 204 by the CPU 201 . The broadcast transmission unit 204 transmits broadcast video that constitutes the program currently being broadcast via the antenna 21 and via broadcast waves (on broadcast waves). The broadcast transmission unit 204 functions as transmission means for transmitting broadcast video that constitutes a program.

A configuration of the program server 30 will be described. The program server 30 is, for example, a device provided by a broadcasting station. The program server 30 is a server that stores communication video that constitutes a program together with broadcast video (or recorded broadcast video). The program server 30 includes a CPU 301 , a control software ROM 302 , a RAM 303 , a storage section 304 and a communication IF 305 .
CPU 301 controls the operation of each element of program server 30 . The control software ROM 302 stores a control program which is the content of processing executed by the CPU 301 . A RAM 303 provides a work area necessary for the CPU 301 to execute processing.

The storage unit 304 stores various information. Various types of information are written to and read from the storage unit 304 by the CPU 301 . As an example, the storage unit 304 stores communication video.
The communication IF 305 is an interface that transmits and receives various information via the communication network 40 . The communication IF 305 transmits communication video to the video receiving device 10 in response to a request from the video receiving device 10 as will be described later.

Next, the display screen of the broadcast-communications cooperation program will be described. FIG. 2 is a display screen diagram of the display unit 109 of the video reception device 10 according to this embodiment. The display unit 109 displays both broadcast video (or recorded broadcast video) 51 and communication video 52 . As an example, the broadcast video 51 is a live sports video. The communication video 52 is additional video such as a multi-angle video of a sports broadcast. Note that the program shown in FIG. 2 is an example that can be established with only the broadcast video 51, but the program is not limited to this. For example, the communication video 52 can be a video whose display can be switched to and from the broadcast video 51 by user operation, or a video that can be operated by the user and has a game function linked with the broadcast video 51 . In this case, the communication video 52 is not a sub of the broadcast video 51 but an essential video equivalent to the broadcast video 51 . Therefore, a program does not consist only of the broadcast video 51, but consists of combining the broadcast video 51 and the communication video 52 together.

Next, a program recording process in the video receiving apparatus 10 according to the embodiment will be described. FIG. 3 is a schematic diagram of program recording processing in the video receiving apparatus 10. As shown in FIG. When the program currently being broadcast is a broadcast-communications-linked program, the CPU 201 of the video transmission device 20 multiplexes the expiration date information of the communication video related to the broadcast video into the stream of the program and transmits the multiplexed information. The term of validity information is, for example, information regarding the term of validity of communication video stored in the storage unit 304 of the program server 30 . Note that, as an example, the validity period information is multiplexed in the stream for each communication video. In the example shown in FIG. 3, video 1 is broadcast video that constitutes a program currently being broadcast. Images 2 and 3 are related images of image 1 and are communication images stored in storage unit 304 of program server 30 . The stream is multiplexed with the expiration date information of each of the video 2 and the video 3. FIG. Alternatively, or together with this, information indicating the location of the expiration date information (for example, URL information linked to the program server 30) may be multiplexed in the stream.

The CPU 101 of the video receiving device 10 controls to record the video 1, which is the broadcast video included in the stream, in the storage unit 104 when recording the program currently being broadcast. The CPU 101 controls to record the validity period information of the communication video multiplexed in the stream in the storage unit 104 in association with the video 1 . Note that the CPU 101 receives the video 2 and the video 3, which are communication videos forming the program together with the video 1, by the communication IF 108, but does not control recording of the video 2 and the video 3 in the storage unit 104. FIG.

FIG. 4 is a flowchart of program recording processing. First, the broadcast receiving unit 106 receives broadcast waves of a program currently being broadcast to be recorded (Block 1001). In Block 1001, the broadcast receiving unit 106 receives broadcast video that constitutes the program currently being broadcast via broadcast waves. CPU 101 reads the service descriptor from the stream (Block 1002). A service descriptor is a descriptor indicating whether or not a program to be recorded is a broadcast-communications-linked program.

Based on the service descriptor, the CPU 101 determines whether or not the program to be recorded is a broadcast-communications cooperation program (Block 1003). If the program to be recorded is not a broadcasting-communications-linked program (Block 1003, No), the CPU 101 executes normal recording processing (Block 1004). In Block 1004 , CPU 101 controls storage unit 104 to record broadcast video that constitutes a program to be recorded. Furthermore, the CPU 101 controls to add a recording title (eg, a program name) for specifying the recorded broadcast video corresponding to this broadcast video to the recording list and record it. A recording list is a list of recording titles recorded in the storage unit 104 . Furthermore, the CPU 101 controls to record information (hereinafter referred to as recording title information) related to the recorded broadcast video in the storage section 104 .
Recorded title information is information related to recorded broadcast video, such as program name, broadcast date and time, presence/absence of related video, and presence/absence of expiration date information, for example.

If the program to be recorded is a broadcasting-communications-linked program (Block 1003, Yes), the CPU 101 reads a related video descriptor from the stream (Block 1005). The related video descriptor is a descriptor that indicates whether or not there is a communication video that is related to the broadcast video.

Based on the related video descriptor, CPU 101 determines whether or not related video exists in the broadcast video (Block 1006). That is, in Block 1006, CPU 101 determines whether or not communication video that constitutes a program to be recorded exists on program server 30, apart from broadcast video, based on the related video descriptor. If there is no related video in the broadcast video (Block 1006, No), CPU 101 executes Block 1004 processing. If there is a related video in the broadcast video (Block 1006, No), the CPU 101 determines whether the stream has expiration date information (Block 1007). Expiration information may, for example, be multiplexed with the associated video descriptor.

When expiration date information exists in the stream (Block 1007, Yes), the CPU 101 executes recording of the broadcast video and records the expiration date information in the recording title information (Block 1008). In Block 1008 , CPU 101 controls storage unit 104 to record broadcast video that constitutes a program to be recorded. Furthermore, the CPU 101 controls to add a recording title for specifying the recorded broadcast video corresponding to this broadcast video to the recording list and record it. Furthermore, the CPU 101 acquires expiration date information of the communication video from the stream. Then, the CPU 101 controls to record the expiration date information in the recording title information.

When the expiration date information does not exist in the stream (Block 1007, No), the CPU 101 accesses the playback control file of the related video (Block 1009). In Block 1009 , the CPU 101 accesses the communication video reproduction control file stored in the storage unit 304 of the program server 30 via the communication network 40 . As an example, the CPU 101 indicates the location of the expiration date information and acquires URL information for accessing the reproduction control file (URL information for obtaining the expiration date information from the program server 30) from the stream. Information indicating the location of the expiration date information is multiplexed in the stream. Then, the CPU 101 accesses the reproduction control file based on the URL information. The CPU 101 acquires from the program server 30 the expiration date information explicitly described in the reproduction control file. Note that even if the expiration date information is not explicitly described in the reproduction control file, for example, the CPU 101 analyzes the HTML of the reproduction control file and acquires the expiration date information from the program server 30 based on various information. You may make it
CPU 101 determines whether or not expiration date information exists in the reproduction control file (Block 1010). If expiration date information exists in the playback control file (Block 1010, Yes), the CPU 101 acquires expiration date information from the playback control file and executes processing in Block 1008. FIG.

If the reproduction control file does not contain expiration date information (Block 1010, No), the CPU 101 executes the processing of Block 1004. FIG. In other words, the recorded broadcast video recorded in the storage unit 104 includes the related video, but the related video does not have an expiration date set. Therefore, the CPU 101 can acquire the related video from the program server 30 at any time.

If the CPU 101 accesses the playback control file of the related video in Block 1009 and accesses the program server 30 in Block 1010 to acquire the validity period information from the playback control file when the validity period information exists, it is during the broadcast of the program. is not limited to only The CPU 101 accesses the program server 30 appropriately such as at the end of the broadcast of the program, at the completion of the recording process, at a predetermined period after the completion of the recording process, etc., acquires the expiration date information, and updates the expiration date information recorded in the storage unit 104. You may do so. The broadcast station may change the validity period information of the communication video stored in the program server 30 after the broadcast of the program ends. Therefore, the video receiving device 10 can update the expiration date information recorded in the storage unit 104 following the update of the expiration date information in the program server 30 .

Next, a process of displaying recorded titles in the video receiving device 10 according to the embodiment will be described. FIG. 5 is a flowchart of processing for displaying recorded titles.
First, CPU 101 acquires a recording list from storage unit 104 (Block 2001). In Block 2001, the CPU 101 controls display of the recording list acquired from the storage unit 104 on the display unit 109 based on the user's display operation of the recording list.
The CPU 101 acquires recording title information of the recording title selected from the recording list (Block 2002). In Block 2002, the CPU 101 selects a specific recorded title from the recording list by the user (or displays information related to the recorded broadcast video corresponding to the selected recorded title). Recording title information is acquired from the storage unit 104 .

The CPU 101 determines whether or not expiration date information is recorded in the recording title information (Block 2003). If expiration date information is not recorded in the recording title information (Block 2003, No), the CPU 101 controls to display normal title information (Block 2004). In Block 2004, the CPU 101 controls the display unit 109 to display the recording title information of the selected recording title. The recording title information displayed on the display unit 109 is, for example, information on the program name and broadcast date and time. Note that when no expiration date information is recorded in the recording title information in Block 2003, for example, when there is no related video in the selected recording title, or when there is related video in the selected recording title but the expiration date is is not set. The CPU 101 controls to reproduce the recorded broadcast video recorded in the storage unit 104 and display it on the display unit 109 based on the user's operation to reproduce the recorded title. Alternatively, the CPU 101 synchronizes the recorded broadcast video recorded in the storage unit 104 with the communication video received from the program server 30 by the communication IF 108 based on the user's playback operation of the recorded title, and communicates with the recorded broadcast video. A program composed of video is controlled to be reproduced and displayed on the display unit 109 .

If expiration date information is recorded in the recording title information (Block 2003, Yes), the CPU 101 acquires current date and time information kept by the clock 105 (Block 2005). The CPU 101 compares the current date and time information with the expiration date information, and determines whether the current date and time are within the expiration date (Block 2006).
If the current date and time is within the expiration date (Block 2006, Yes), the CPU 101 controls to display the expiration date information of the recording title on the display unit 109 (Block 2007). In Block 2007, when the current date and time are within the expiration date, the CPU 101 displays recording title information including at least expiration date information based on the display operation of information related to the recorded broadcast video corresponding to the recording title selected by the user. It is controlled to display on the display unit 109 . FIG. 6 is a display screen diagram of the display unit 109 in Block2007. The CPU 101 controls the display unit 109 to display the recording list 53 and the recording title information 54 of the recording title 3 selected from the recording list 53 . The display unit 109 displays, as the recording title information 54, that there is a related video in the recording title 3 and that the current date and time are within the expiration date. In other words, the CPU 101 can control to display a message prompting the user to reproduce and view the recorded title within the valid period. By visually recognizing the expiration date information displayed on the display unit 109, the user can easily know that if the recorded title is reproduced by when, the program of the recorded title including related video can be completely viewed. be able to. The CPU 101 synchronizes the recorded broadcast video recorded in the storage unit 104 with the communication video received from the program server 30 by the communication IF 108 based on the user's operation to reproduce the recorded broadcast video corresponding to the recording title 3. , reproduces a program composed of recorded broadcast video and communication video, and controls the display unit 109 to display the program.

Returning to FIG. 5, if the current date and time are not within the expiration date (Block 2006, No), the CPU 101 determines whether or not the related video is essential (Block 2008). Information as to whether or not the related video is essential may be multiplexed or arranged in the stream. The CPU 101 may acquire information as to whether or not the related video is essential during the recording process, and record it in the recording title information. Then, the CPU 101 can determine whether or not the related video is essential based on the information recorded in the recording title information.

If the related video is essential (Block 2008, Yes), the CPU 101 controls the display unit 109 to display a message that the selected recording title is unavailable (Block 2009). In Block 2009, the CPU 101 controls the display unit 109 to display at least a message indicating that the communication video cannot be used when the current date and time are not within the expiration date and the related video is essential. FIG. 7 is a display screen diagram of the display unit 109 in Block2009. The CPU 101 controls the display unit 109 to display the recording list 53 and the recording title information 54 of the recording title 2 selected from the recording list 53 . In addition to the title information 54, the display unit 109 displays a message that there is a possibility that the recorded title cannot be reproduced correctly because the related video that is essential cannot be viewed even if the recorded title is reproduced. By visually recognizing this message displayed on the display unit 109, the user can avoid unnecessary reproduction operations.

If the related video is not essential (that is, if the related video is additional video to the recorded broadcast video) (Block 2008, No), the CPU 101 displays a message that the related video of the selected recording title is unavailable. It is controlled to display on the display unit 109 (Block 2010). In Block 2010, the CPU 101 controls the display unit 109 to display a message that the communication video cannot be used when the current date and time are not within the validity period and the related video is not essential. The CPU 101 controls the reproduction of the recorded broadcast video recorded in the storage unit 104 based on the user's operation to reproduce the recorded title, and controls the display unit 109 to display the recorded broadcast video. It should be noted that since the related video has expired, the CPU 101 does not acquire the related video from the program server 30 via the communication IF 108 . By visually recognizing this message displayed on the display unit 109, the user can easily know that the related video cannot be viewed.

According to this embodiment, the user can recognize that the program to be recorded is the broadcast-communications cooperation program. Furthermore, the user can know the expiration date during which the related video of the broadcast-communications-linked program exists on the program server 30 . Therefore, the user can act to view the recorded title within the expiration date. As a result, the user can avoid a situation in which the recorded title that the user has a desire to view is viewed only incompletely or not at all as meaningful.

While several embodiments of the invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof.

DESCRIPTION OF SYMBOLS 1... Video transmission/reception system, 10... Video receiving apparatus, 11... Antenna, 20... Video transmitting apparatus, 21... Antenna, 30... Program server, 40... Communication network, 51... Broadcast video, 52... Communication video, 53... Recording list , 54... Recording title information, 101... CPU, 102... Control software, 103... RAM, 104... Storage unit, 105... Clock, 106... Broadcast receiving unit, 107... Decoder, 108... Communication IF, 109... Display unit, 201 CPU 202 Control software ROM 203 RAM 204 Storage unit 205 Broadcast transmission unit 301 CPU 302 Control software ROM 303 RAM 304 Storage unit 305 Communication IF.

Claims (2)

In a video receiving device having a communication IF capable of receiving communication video, a broadcast receiving section, and a storage section,
The video receiving device can display broadcast video and communication video in cooperation,
a broadcast wave stream including the broadcast video;
including information indicating whether the broadcast wave stream is broadcast communication cooperation,
URL information for accessing a reproduction control file for controlling reproduction of the communication video is multiplexed in the broadcast wave stream;
The playback control file is composed of HTML,
A program server saves the communication video and the playback control file,
The broadcast receiving unit receives the broadcast wave stream,
When the information indicating whether or not the broadcast-communication cooperation is indicated indicates the broadcast-communication cooperation, accessing the reproduction control file,
recording the broadcast video in the storage unit;
the communication interface accesses the playback control file after the recording process is completed, receives the communication video from the program server,
playing back the broadcast video recorded in the storage unit,
A video receiving device for displaying a program composed of the broadcast video and the communication video received from the program server. Communication video is provided by broadcasting and communication cooperation service,
the broadcast wave stream includes broadcast video;
The broadcast wave stream includes information indicating whether or not it is broadcast communication cooperation,
URL information for accessing a reproduction control file for controlling reproduction of the communication video is multiplexed in the broadcast wave stream;
The playback control file is composed of HTML,
A program server saves the communication video and the playback control file,
receiving the broadcast wave stream;
When the information indicating whether or not the broadcast-communication cooperation is indicated indicates the broadcast-communication cooperation, accessing the reproduction control file,
Record the broadcast video,
accessing the playback control file after completion of the recording process;
A video reception method for displaying a program composed of the recorded broadcast video and the communication video received from the program server.

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