JP2007124575A - Recording apparatus, output apparatus, and edit apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording apparatus capable of providing management information whereby a plurality of kinds of contents included in contents data can easily be managed in the case of recording the contents data including the plural contents to a storage device. <P>SOLUTION: A broadcast signal recording apparatus 1 includes a data separation section 12 that reads a PID denoting a kind of data from broadcast data 17 to separate the broadcast data 17 into AV data 31 and program attribute information 18; and a management data generating section 13 that generates management data 32 for managing the AV data 31 on the basis of the program attribute information 18 separated by the data separation section 12. When the received broadcast data 17 include a plurality of kinds of the AV data 31, the management data generating section 13 couples respective program attribute information items 18 of a plurality of kinds of the AV data 31 with each other to generate management data 32. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a recording device for recording a transmission signal by digital broadcasting, an output device for outputting a broadcast signal recorded by the recording device, and / or an editing device for editing.

  In recent years, with the spread of communication networks such as the Internet, opportunities to acquire video data and the like from other terminals through this communication network and record them in the own apparatus are increasing. Further, as a file format used when accumulating video data obtained from other terminals through the Internet, for example, ASF (Advanced Streaming Format) or MP4 is well known. In these file formats, in addition to contents such as audio / video data (hereinafter referred to as AV data), attribute information such as title and copyright holder information related to the contents can be stored together. .

  The file format can also be used when acquiring and recording a television program distributed by digital broadcasting. That is, in digital broadcasting, for example, program name information of distributed program content is multiplexed in a TS (Transport Stream) packet format together with AV data in a format called EIT (Event Information Table).

  For this reason, when program name information or the like is acquired from the program content stored in the file format as described above, it is necessary to demultiplex the stored program content data and extract the EIT. In order to extract the EIT, it is necessary to look at the program content data subjected to the demultiplexing process in order from the top.

  Therefore, it takes time to acquire program name information from the stored program content, and it is difficult to display using the program name information.

  Therefore, in order to solve this problem, in Patent Document 1, information such as the title and broadcast time of program content is extracted in advance when demultiplexing the data of the program content, and the result is stored in another management file. A method of storing and using at the time of content list display is disclosed.

  In addition, when program content distributed by digital broadcasting is acquired and stored using the above-described file format or the like, one type of program content may be included in one file. For example, when a broadcast program is recorded for a certain period in response to a recording start and stop instruction from the user, and the recorded result is recorded as one file, a plurality of types of programs are recorded in the recorded one file. For example.

  By the way, as a result of recording a digital broadcast using the file format described above, when a single file contains a plurality of programs, the attribute information is stored in one position, and the number of stored information is one for each recorded program. Storage locations for storing program attribute information cannot be provided. This is because when a program is recorded as one file using the file format such as ASF described above, there is only one storage area prepared for storing attribute information such as a program name.

  For this reason, conventionally, only one attribute information of a plurality of programs (for example, attribute information of the first recorded program) is stored in the storage area. However, with this correspondence, the user cannot easily refer to what kind of program is included other than the program with the program name stored in the storage area in the file in which the program distributed by digital broadcasting is recorded. Problems arise.

Therefore, in order to solve such a problem, for example, in Patent Document 2, when a program distributed by digital broadcasting is recorded for a certain period of time, each program is automatically referred to with reference to SI (Service Information) information of the program. A method for creating a file is disclosed.
JP 2003-196954 A (published July 11, 2003) Japanese Unexamined Patent Publication No. 2003-199007 (released on January 25, 2002)

  However, the following problems occur in Patent Document 1 and Patent Document 2 described above.

  That is, in the method of Patent Document 1, when AV data including a plurality of programs is recorded and recorded as one file, a configuration in which the user can refer to attribute information of each program included in the recorded AV data. Not disclosed.

  In the method shown in Patent Document 1, since a file is generated for each program content recorded from the start of recording to the stop of recording, further management such as associating these files with each program is required. As a result, the file management process becomes complicated. Further, in the method disclosed in Patent Document 1, when a plurality of received program contents are classified into files, it is necessary to close the file once and then open another file. Normally, these file open and file close processes take time, so for program content received between closing and opening, unless a memory for temporarily holding the program content is provided. There arises a problem that it cannot be recorded.

  The present invention has been made in view of the above problems, and its object is to easily record each of a plurality of types of content included in the content data when the content data including a plurality of types of content is recorded in a storage device. To realize a recording device, an output device, and an editing device that can provide management information that can be managed.

  In order to solve the above problems, a recording apparatus according to the present invention is a recording apparatus that converts a transmission signal by digital broadcasting into broadcast data and records it in a storage device. The broadcast data includes content data and the content Attribute information indicating the content of data is included, the type information indicating the type of data is read from the broadcast data, and the separation means for separating the broadcast data into content data and attribute information based on the type information, and the separation Management data generation means for generating management data for managing the content data based on the attribute information separated by the means, and when the received transmission signal includes a plurality of types of content data, The management data generation means combines the attribute information of the plurality of types of content data to generate management data. Characterized in that it formed.

  Here, the content data is, for example, program data distributed by digital broadcasting, and the attribute information is, for example, when the content data is program data, the program name, broadcast date and time, Information such as copyright information and / or program content.

  According to the above configuration, since the separating unit is provided, the attribute information of the content data can be separated from the broadcast data. In addition, since the management data generation means is provided, management data for managing content data corresponding to the attribute information can be generated based on the separated attribute information. For this reason, by referring to the management data, it is possible to grasp the contents related to the content data stored in the storage device.

  In addition, when the received transmission signal includes a plurality of types of content data, the management data generation unit generates management data by combining the attribute information of the plurality of types of content data. For this reason, even when multiple types of content data are recorded in the storage device, for example, as a single file, the contents of each content data recorded in the storage device can be grasped only by referring to the generated management data. can do.

  As described above, since the recording apparatus according to the present invention includes the management data generation means, the contents of each of a plurality of types of content data recorded in the storage device can be obtained simply by referring to the generated management data. Can be easily grasped.

  Therefore, the recording apparatus according to the present invention can provide management information that can easily manage each of the plurality of types of content data when a plurality of types of content data is recorded in the storage device.

  In the recording apparatus according to the present invention, in the configuration described above, an extracting unit that extracts key frame information, which is information indicating a key frame that is a randomly accessible frame position, is extracted from the content data separated by the separating unit. Further, the management data generation means may be configured to generate management data including the key frame information extracted by the extraction means.

  According to the above configuration, since the extraction unit is further provided, the management data generation unit can include information on a unit that can be randomly accessed in the content data in the management data.

  Therefore, the recording apparatus according to the present invention can provide management data capable of managing content data to be recorded in the storage device in units that can be randomly accessed.

  In the recording apparatus according to the present invention, in the configuration described above, the extracting unit extracts the key frame information in association with information indicating a reproduction time in the content data of the key frame indicated by the key frame information. It is preferable that it is comprised.

  According to the above configuration, the extraction unit associates the extracted key frame information with information indicating the reproduction time in the content data of the key frame indicated by the key frame information. Therefore, management information corresponding to a randomly accessible unit in the content data can be specified according to the reproduction time.

  In this way, management information corresponding to a randomly accessible unit in the content data can be specified by the playback time, so that the content data is separated or combined at a desired position with reference to the management information for editing. be able to.

  In the recording apparatus according to the present invention, in the configuration described above, when the received transmission signal includes a plurality of types of content data, the separation unit converts the attribute information into the content data type based on the type information. And the management data generation means inserts a symbol that is not used in the description of the attribute information into the coupling position of the attribute information distinguished by the separation means as management data. Is preferably configured to generate.

  According to the above configuration, the management data generation unit generates management data by inserting a symbol that is not used in the description of the attribute information as a delimiter at each attribute information distinguished by the separation unit. . For this reason, when outputting management data in which attribute information of a plurality of types of content data is combined, the management data is divided and output at the symbol position with reference to the inserted symbol. The management data can be identified for each type of content data by, for example, outputting management data together.

  In the recording apparatus according to the present invention, in the configuration described above, when the received transmission signal includes a plurality of types of content data, the separation unit converts the attribute information into the content data type based on the type information. The management data generation means calculates the data amount of each attribute information distinguished by the separation means, and generates the management data including the calculated data amount. It may be configured.

  According to the above configuration, the management data generating unit can calculate the data amount of each attribute information distinguished by the separating unit, and generate the management data including this data amount.

  Therefore, the management data can be identified for each type of content data based on the amount of data included in the management data.

  In order to solve the above-described problem, the output device according to the present invention acquires content data recorded by the recording device and management data, and outputs content data corresponding to the selected management data. An output device that outputs attribute information of content data corresponding to the management data based on the management data, and content data output means that outputs content data. When the information specifying the specific attribute information is received from the attribute information output by the output means, the content data output means selects and outputs the content data corresponding to the specified attribute information To do.

  According to the above configuration, since the attribute information output means is provided, the attribute information of the content data can be output, so that the content data can be shown to the user. Since the content data output means is provided, the content data output means can select and output the content data corresponding to the designated attribute information.

  Therefore, the output device according to the present invention has an effect that the content data desired by the user can be output.

  In order to solve the above-described problem, an output device according to the present invention includes content data recorded by a recording device including the separation unit, the management data generation unit, and the extraction unit, and management data. An output device that outputs content data corresponding to the selected management data, and outputs attribute information of content data corresponding to the management data based on the management data; Content data output means for selecting and outputting content data corresponding to the specified attribute information from the attribute information output by the attribute information output means, and the management data is combined with a plurality of attribute information The attribute information output means is based on the delimiter inserted at the combination position of the attribute information. , And outputs by separating a plurality of attribute information.

  According to the above configuration, since the attribute information output unit is provided, the attribute information of the content data can be output, and the contents of the content data can be shown to the user. In addition, when the management data is generated by combining a plurality of attribute information, the attribute information output means separates the plurality of attribute information based on the delimiter inserted at each attribute information combining position. The management data can be output in the selected format.

  As described above, the output device according to the present invention is based on the above delimiters inserted at the combination positions of the attribute information even when the management data is generated by combining the plurality of attribute information. Since attribute information can be separated and output, the user can select attribute information corresponding to the type of content data.

  Therefore, the output device according to the present invention can cause the user to select desired attribute information, and thus has an effect that the content data desired by the user can be output.

  In order to solve the above-described problem, an output device according to the present invention includes content data recorded by a recording device including the separation unit, the management data generation unit, and the extraction unit, and management data. An output device for acquiring and outputting content data corresponding to the selected management data, wherein the attribute information output means outputs the attribute information of the content data corresponding to the management data based on the management data; Content data output means for selecting and outputting content data corresponding to the specified attribute information from the attribute information output by the attribute information output means, and the management data is combined with a plurality of attribute information. The attribute information output means separates and outputs a plurality of attribute information based on the data amount of each attribute information. I am characterized in.

  According to the above configuration, since the attribute information output unit is provided, the attribute information of the content data can be output, and the contents of the content data can be shown to the user. Further, when the management data is generated by combining a plurality of attribute information, the attribute information output means has a format in which the management data is separated from the plurality of attribute information based on the data amount of each attribute information. Can be output.

  As described above, the output device according to the present invention separates and outputs each attribute information based on the data amount of each attribute information, even when the management data is generated by combining a plurality of attribute information. Therefore, the user can select attribute information corresponding to each type of content data.

  Therefore, the output device according to the present invention can cause the user to select desired attribute information, and thus has an effect that the content data desired by the user can be output.

  In order to solve the above-described problem, an editing apparatus according to the present invention includes content data recorded by a recording apparatus including the separation unit, the management data generation unit, and the extraction unit, and management data. An editing device that acquires and edits content data, receiving means for receiving designation information for designating a division or combination position of the content data, and key frame information for extracting key frame information from the acquired management data Based on the extraction means, the designation information accepted by the acceptance means, and the key frame information extracted by the key frame information extraction means, the key frame position of the content data corresponding to the designation information is divided in the content data. Alternatively, a determination unit that determines the coupling position and the determination unit determine And characterized in that it comprises a data segmentation and concatenation means for dividing or combining the respective data and content data management in accordance with the split or coupled position.

  According to the above configuration, since the determining unit is provided, the key frame position of the content data corresponding to the designation information received by the receiving unit can be determined as the division position. Further, since the dividing / combining means is provided, the management data and the content data can be divided or combined according to the dividing or combining position determined by the determining means.

  Therefore, the editing apparatus according to the present invention has an effect that content data can be divided or combined at a designated position and edited.

  In order to solve the above problems, a recording apparatus according to the present invention is a recording apparatus that converts a transmission signal by digital broadcasting into broadcast data and records it in a storage device. The broadcast data includes content data and the content Attribute information indicating the content of data is included, the type information indicating the type of data is read from the broadcast data, and the separation means for separating the broadcast data into content data and attribute information based on the type information, and the separation Management data generation means for generating management data for managing the content data based on the attribute information separated by the means, and when the received transmission signal includes a plurality of types of content data, The management data generation means combines the attribute information of the plurality of types of content data to generate management data. Characterized in that it formed.

  Therefore, the recording apparatus according to the present invention can provide management information that can easily manage each of the plurality of types of content data when a plurality of types of content data is recorded in the storage device.

  In order to solve the above-described problem, the output device according to the present invention acquires content data recorded by the recording device and management data, and outputs content data corresponding to the selected management data. An output device that outputs attribute information of content data corresponding to the management data based on the management data, and content data output means that outputs content data. When the information specifying the specific attribute information is received from the attribute information output by the output means, the content data output means selects and outputs the content data corresponding to the specified attribute information To do.

  Therefore, the output device according to the present invention has an effect that the content data desired by the user can be output.

  In order to solve the above-described problem, an output device according to the present invention includes content data recorded by a recording device including the separation unit, the management data generation unit, and the extraction unit, and management data. An output device that outputs content data corresponding to the selected management data, and outputs attribute information of content data corresponding to the management data based on the management data; Content data output means for selecting and outputting content data corresponding to the specified attribute information from the attribute information output by the attribute information output means, and the management data is combined with a plurality of attribute information The attribute information output means is based on the delimiter inserted at the combination position of the attribute information. , And outputs by separating a plurality of attribute information.

  Therefore, the output device according to the present invention can cause the user to select desired attribute information, and thus has an effect that the content data desired by the user can be output.

  In order to solve the above-described problem, an output device according to the present invention includes content data recorded by a recording device including the separation unit, the management data generation unit, and the extraction unit, and management data. An output device for acquiring and outputting content data corresponding to the selected management data, wherein the attribute information output means outputs the attribute information of the content data corresponding to the management data based on the management data; Content data output means for selecting and outputting content data corresponding to the specified attribute information from the attribute information output by the attribute information output means, and the management data is combined with a plurality of attribute information. The attribute information output means separates and outputs a plurality of attribute information based on the data amount of each attribute information. I am characterized in.

  Therefore, the output device according to the present invention can cause the user to select desired attribute information, and thus has an effect that the content data desired by the user can be output.

  In order to solve the above-described problem, an editing apparatus according to the present invention includes content data recorded by a recording apparatus including the separation unit, the management data generation unit, and the extraction unit, and management data. An editing device that acquires and edits content data, receiving means for receiving designation information for designating a division or combination position of the content data, and key frame information for extracting key frame information from the acquired management data Based on the extraction means, the designation information accepted by the acceptance means, and the key frame information extracted by the key frame information extraction means, the key frame position of the content data corresponding to the designation information is divided in the content data. Alternatively, a determination unit that determines the coupling position and the determination unit determine And characterized in that it comprises a data segmentation and concatenation means for dividing or combining the respective data and content data management in accordance with the split or coupled position.

  Therefore, the editing apparatus according to the present invention has an effect that content data can be divided or combined at a designated position and edited.

  An embodiment of the present invention will be described below with reference to FIGS. That is, the broadcast signal processing system 100 according to the present embodiment receives the broadcast signal 16 from the outside, reproduces the received broadcast signal 16 on the display device 5, for example, or broadcast data 17 based on the received broadcast signal 16. Or to edit. As shown in FIG. 2, the broadcast signal processing system 100 includes a broadcast signal recording device (recording device) 1, a broadcast signal reproduction device (output device) 2, a data storage unit (storage device) 3, a broadcast signal editing device (editing device). Device) 4 and display device 5. FIG. 2 is a block diagram showing a schematic configuration of the broadcast signal processing system 100 according to the present embodiment.

  That is, the broadcast signal recording apparatus 1 receives the broadcast signal 16, and includes management including AV data (content data) 31 composed of video data and audio data, and information such as a program title corresponding to the AV data 31. Data (management data) 32 is generated. When the broadcast signal recording apparatus 1 records the generated AV data 31 and management data 32 in the data storage unit 3 or reproduces the received broadcast signal 16 in real time, the broadcast data 16 is generated from the broadcast signal 16. Or transmitted to the playback device 2.

  The broadcast signal reproduction device 2 reads AV data 31 and management data 32 stored in the data storage unit 3, and generates video and audio data based on these data. The broadcast signal reproduction device 2 also generates list information (list information) indicating programs that can be reproduced on the display device 5 based on the read management data 32, and the generated list information is displayed on the display device 5. Can be sent to and played.

  Further, the user can designate a program desired to be reproduced by referring to the list information reproduced on the display device 5, and the broadcast signal reproducing device 2 indicates the program desired to be reproduced. Information (program information) is received from the display device 5. Then, the broadcast signal reproduction device 2 outputs the generated video and audio data to the display device 5 in accordance with the received program information.

  The data storage unit 3 is a readable / writable recording medium, and can be realized by, for example, a hard disk. The data storage unit 3 stores AV data 31 and management data 32 received from the broadcast signal recording device 1, and these stored data are read by the broadcast signal reproduction device 2 or the broadcast signal editing device 4.

  The broadcast signal editing apparatus 4 divides the AV data 31 and the management data 32 stored in the data storage unit 3 at a designated division position, and a plurality of AV data (AV data 31a, AV data 31b) and a plurality of management data ( Management data 32a and management data 32b) are generated. The broadcast signal editing device 4 transmits the data 31 and the management data 32 to the data storage unit 3 and stores them in the divided AV.

  The display device 5 reproduces the video and audio based on the video and audio data received from the broadcast signal reproduction device 2. The display device 5 displays a list of reproducible programs based on the list information received from the broadcast signal reproduction device 2.

(Configuration of broadcast signal recording device)
Hereinafter, the configuration of the broadcast signal recording apparatus 1 will be described with reference to FIG. FIG. 1 shows an embodiment of the present invention, and is a block diagram showing a main configuration of a broadcast signal recording apparatus 1.

  The broadcast signal recording apparatus 1 according to the present embodiment includes a tuner unit 11, a data separation unit (separation unit) 12, a management data creation unit (management data generation unit) 13, a recording control unit 14, and a key frame information extraction unit. (Extracting means) 15 is provided.

  The tuner unit 11 receives a broadcast signal 16 of a selected frequency from, for example, a broadcast station, etc., performs demodulation processing such as OFDM (Orthogonal Frequency Division Multiplexing), and transmits TS (Transport Stream) packets. Broadcast data 17 that is a collection is generated. Each TS packet includes an identification ID (Packet Identifier; PID (type information)) indicating the type of data stored in each packet. The tuner unit 11 transmits the generated broadcast data 17 to the data separation unit 12.

  The data separation unit 12 refers to the PID of each TS packet included in the broadcast data 17 and separates the TS packet. More specifically, the data separation unit 12 includes a TS packet including a so-called EIT (Event Information Table), which is information related to the program, such as a program name, broadcast date / time, copyright information, and program content, among the TS packets (hereinafter referred to as “TS information”) And program attribute information (attribute information) 18) and TS packets (hereinafter referred to as AV data) including video and audio. The data separation unit 12 transmits the program attribute information 18 to the management data creation unit 13 and the AV data 31 to the key frame information extraction unit 15.

  The key frame information extraction unit 15 analyzes the received AV data 31, and generates information (key frame information 19) indicating a frame (key frame) at a randomly accessible position. The key frame information 19 includes information indicating an index number assigned as 0, 1, 2,... From the beginning of the TS packet or the number of bytes from the beginning of the TS packet. The key frame information 19 also includes time information indicating the reproduction time (reproduction time) 26 of each key frame. The key frame information extraction unit 15 transmits the AV data 31 received from the data separation unit 12 to the recording control unit 14 and transmits the generated key frame information 19 to the management data creation unit 13.

  The random accessible position described above is, for example, when the video stream is an international standard encoding method such as MPEG-2 (Moving Picture Expert Group Phase 2) or MPEG-4 (Moving Picture Expert Group Phase 4). This corresponds to the head of the I frame, which is intra-screen coding. In addition, in the case of an audio encoding international standard system such as AAC (Advanced Audio Coding), it corresponds to the head of an ADTS (Audio Data Transport Stream) frame.

  The management data creation unit 13 extracts information such as the program name, broadcast time, copyright information, and program contents from the received program attribute information 18, and the extracted information and the key frame information received from the key frame information extraction unit 15. Management data 32 is generated based on the information 19. For example, the management data creation unit 13 can create the management data 32 as follows. As a premise, it is assumed that while the broadcast signal recording apparatus 1 is receiving and recording the broadcast signal 16, one program (program A) is finished and the next another program (program B) is started.

  That is, first, when the broadcast signal 16 including the data of the program A is received, the tuner unit 11 converts the broadcast signal 16 into the broadcast data 17 and transmits it to the data separation unit 12. When the data separation unit 12 receives the broadcast data 17 from the tuner unit 11, the data separation unit 12 separates the program attribute information 18 relating to the program A and the AV data 31 relating to the program A. The program attribute information 18 separated by the data separation unit 12 is transmitted to the management data creation unit 13. The management data creation unit 13 holds the program attribute information 18.

  Here, when the program A ends and the broadcast signal 16 of the new program B is received, the program attribute information 18 related to the program B is transmitted to the management data creation unit 13 in the same manner as the program attribute information 18 of the program A described above. . As described above, when the program attribute information 18 of the program B is received following the program attribute information 18 of the program A, the management data creation unit 13 sets each received program attribute information 18 as “ ● ● Connect with delimiter symbol (separator) such as “”. The delimiter symbol is a symbol used as a delimiter between a certain element and a certain element. FIG. 3 shows an example of the description format of the list display data 28 in the broadcast signal reproducing apparatus 2 according to the present embodiment.

  As described above, the management data creation unit 13 may be configured to combine the program names with a delimiter symbol between them when receiving a plurality of types of program attribute information 18 such as program names. As described above, since the management data creation unit 13 can distinguish the program attribute information 18 corresponding to each program by using the delimiter, even if the storage area of the program attribute information 18 is one, a plurality of programs are stored. The program attribute information 18 can be recorded.

  Further, the management data creation unit 13 is configured to be able to identify the program attribute information 18 of each program by the above delimiter symbol when the received broadcast signal 16 includes a plurality of programs. However, the delimiter symbol is not limited to “●●”. That is, any symbol can be used as long as it can identify a break in program attribute information 18 such as a program name.

  If a delimiter symbol is used, a symbol used as the delimiter symbol cannot be used in a symbol representing attribute information. Therefore, the program attribute information 18 such as a program name may be distinguished by the length of the program name without using the delimiter symbol as described above.

  When the management data generation unit 13 generates the management data 32, the management data generation unit 13 transmits the generated management data 32 to the recording control unit 14.

  The recording control unit 14 controls the generated AV data 31 and management data 32 to be converted into a predetermined format and recorded in the data storage unit 3. That is, when the recording control unit 14 receives the AV data 31 from the key frame information extraction unit 15 and the management data 32 from the management data creation unit 13, the file name of the AV data 31 and the file of the management data 32 are received as shown in FIG. The name is recorded in the data storage unit 3 so as to have a correlation so as to indicate the correspondence. FIG. 4 is a diagram showing the correspondence between AV data 31 and management data 32 stored in the data storage unit 3 according to the present embodiment.

  In the broadcast signal recording apparatus 1 according to the present embodiment, the AV data 31 and the management data 32 are managed as separate files. However, the present invention is not limited to this, and the corresponding AV data 31 and the management data 32 are managed. The configuration may be such that both the data 32 and the data 32 are managed together in one file.

  As described above, since the broadcast signal recording apparatus 1 according to the present embodiment includes the data separation unit 12, the program attribute information 18 of the AV data 31 can be acquired from the broadcast data 17. Since the management data creation unit 13 is provided, management data 32 for managing the AV data 31 corresponding to the program attribute information 18 is created and stored in the data storage unit 3 based on the acquired program attribute information 18. Can be made. Therefore, it is possible to grasp the contents related to the AV data 31 stored in the data storage unit 3 by reading out and referring to the management data 32 from the data storage unit 3.

  When the received broadcast signal 16 includes AV data 31 of a plurality of types of program content, the management data creating unit 13 combines the program attribute information 18 of the plurality of types of AV data 31 to manage the management data 32. Is generated. For this reason, even when AV data 31 including a plurality of types of program content is recorded in the data storage unit 3 as one file, for example, it is recorded in the data storage unit 3 only by referring to the management data 32. The contents of each AV data 31 can be grasped.

  As described above, the broadcast signal recording apparatus 1 according to the present embodiment can easily grasp the contents of each of the plural types of AV data 31 only by referring to the management data 32 stored in the data storage unit 3. it can.

(Configuration of broadcast signal playback device)
Next, the broadcast signal reproduction device 2 according to the present embodiment will be described with reference to FIG. FIG. 5 is a diagram showing an embodiment of the present invention, and is a block diagram showing a main configuration of the broadcast signal reproducing apparatus 2.

  The broadcast signal reproduction device 2 includes a data decoding unit 21, a display synthesis unit (content data output unit) 22, a management data analysis unit 23, a list display data creation unit (attribute information output unit) 24, and a read control unit 25. It is the composition which becomes.

  The read control unit 25 reads AV data 31 and management data 32 recorded in a predetermined format from the data storage unit 3. That is, the read control unit 25 first reads the management data 32 from the data storage unit 3 and transmits it to the management data analysis unit 23 described later. Then, the management data 32 received by the management data analysis unit 23 is analyzed, and the obtained key frame information 19 is read and transmitted to the control unit 25.

  Next, the read control unit 25 reads the AV data 31 in accordance with an instruction from the user received by the operation unit (not shown) while using the received key frame information 19. That is, the key frame information 19 includes time information indicating the reproduction time 26 of each key frame in the AV data 31, and a TS packet index number (position information) corresponding to the frame serving as the key frame. The unit 25 can read the AV data 31 as follows.

  For example, when the user instruction indicates “reproduction start from the 10th second in the program A”, the read control unit 25 in the AV data 31 of the program A is 10 seconds after the reproduction start possible position (first). The key frame information 19 corresponding to the key frame closest to the position to be reproduced is searched. Then, the read control unit 25 controls to read the AV data 31 according to the position information from the head of the AV data 31 included in the searched key frame information 19.

  In addition, the above-described instruction from the user is an instruction for designating the recording order of programs such as “reproduction start from the second program” instead of an instruction indicating “reproduction start from the tenth second in program A”. Also good. In this way, even when the program recording order is specified and playback is instructed, the time for starting playback of the second program is derived from the length of time required for playback of the first program. Can do. For this reason, the reading of the AV data 31 can be controlled in the same manner as when the reproduction start time is directly designated.

  The reading of the AV data 31 and the management data 32 by the reading control unit 25 is not limited to the instruction from the operation unit as described above. For example, the broadcast signal reproduction device 2 receives a notification from the broadcast signal recording device 1 that the recording of the AV data 31 and the management data 32 in the data storage unit 3 is completed, and performs the notification in response to the notification. May be.

  When the read control unit 25 reads the AV data 31 from the data storage unit 3 as described above, the read control unit 25 transmits the AV data 31 to the data decoding unit 21.

  The data decoding unit 21 extracts a video stream and an audio stream from the AV data 31 read by the read control unit 25. The data decoding unit 21 decodes each of the extracted video stream and audio stream to generate a video signal and an audio signal and transmits them to the display synthesis unit 22, and sets a playback time 26 of a frame corresponding to each program in the AV data 31. The data is output to the management data analysis unit 23 described later.

  The information indicating the playback time 26 is stored in units of frames as a part of the read AV data 31, and the data decoding unit 21 stores the playback time 26 stored when the AV data 31 is decoded. Also extract. Note that the reproduction time 26 is calculated by subtracting the reproduction time 26 of each program from the extracted reproduction time 26 because the reproduction time 26 at the beginning of each program included in the AV data 31 is not always 0.

  The management data analysis unit 23 extracts the key frame information 19 from the management data 32 received from the read control unit 25 and outputs the key frame information 19 to the read control unit 25. The management data analysis unit 23 also displays display data 27, which is information related to a program to be displayed, based on the reproduction time 26 received from the data decoding unit 21 and the management data 32 read by the read control unit 25. It is also what you generate. For example, when the program name information is included in the management data 31 in the format shown in FIG. 3, the management data analysis unit 23 divides the program name information with the delimiter symbol “●●” as a mark, and further manages the management data. The program information corresponding to the reproduction time 26 received from the data decoding unit 21 can be extracted using the broadcast time information included in 32.

  More specifically, when three program names are included as the management data 32 as shown in FIG. 3, the division position of each program is as follows: 1 hour elapsed from the start of the first program, 3 hours elapsed Become. That is, “news” (program A) from 0 to 1 hour at playback time 26 is “drama” (program B) from 1 to 3 hours, and “today's dish” (program C) at later times. ) Video and audio streams may be associated with each other. The management data analysis unit 23 transmits the display data 27 generated as described above to the display synthesis unit 22.

  Also, the management data analysis unit 23 transmits information for each program created based on the reproduction time 26 received from the data decoding unit 21 and the program information extracted from the management data 32 to the list display data creation unit 24. The list display data creation unit 24 transmits information on each program corresponding to all program contents included in the AV data 31 stored in the data storage unit 3 to the list display data creation unit 24.

  In the management data 32 read from the data storage unit 3 by the broadcast signal reproduction apparatus 2 according to the present embodiment, each program name is configured to be identified by the above delimiter symbol, but is not limited thereto. is not. That is, any symbol can be used as long as it can identify a break in program attribute information 18 such as a program name.

  If the delimiter symbol is used, the symbol for describing the program attribute information 18 cannot include the same symbol as the symbol representing the delimiter symbol. Therefore, the program attribute information 18 such as a program name may be distinguished by the length of the program name or the data amount of each program attribute information 18 without using the delimiter symbol as described above.

  The list display data creation unit 24 creates a list showing all the programs included in the AV data 31 for the AV data 31 existing in the data storage unit 3. The list display data creation unit 24 creates list display data 28 for displaying a list for identifying these programs using the program information received from the management data analysis unit 23. The list display data creation unit 24 controls the generated list display data 28 to be output to the display device 5 and displayed based on the list display data 28.

  More specifically, the list display data creation unit 24 controls to display the list display data 28 as follows. That is, when the AV data 31 read from the data storage unit 3 includes three program contents as shown in FIG. 3 and the program name of each program is distinguished by a delimiter symbol, list display data creation First, the unit 24 grasps that the AV data 31 includes a plurality of programs due to the presence of the delimiter symbol.

  As described above, when the list display data creation unit 24 determines that the read AV data 31 includes a plurality of programs, as shown in FIG. 6, the list name is generated in a format in which the delimiter symbol shown in FIG. 3 is removed. List display data 28 is generated so that it can be displayed side by side. FIG. 6 is a diagram showing a display example of the list display data 28 in the display device 5 according to the present embodiment.

  As described above, the list display data creation unit 24 grasps whether or not the read AV data 31 includes a plurality of program contents based on the delimiter symbol included in the program information received from the management data analysis unit 23. be able to. Further, when it is understood that the read AV data 31 includes a plurality of program contents, the list display data 28 can be created so that the program names can be displayed side by side in a format in which the delimiters are removed. In other words, the list display data creation unit 24 can display a plurality of program names with the list display data 28 of one file.

  Even if the broadcast signal reproduction apparatus 2 is not compatible with the format defined by the delimiter symbol, a list of one file can be displayed by simply displaying the delimiter “●●” as shown in FIG. 7, for example. A plurality of program names can be expressed by the data 28. FIG. 7 is a diagram showing a display example of the list display data 28 in the display device 5 according to the present embodiment.

  In the broadcast signal reproduction device 2 according to the present embodiment, the above-described list display data 28 is displayed on the display device 5 in order to allow the user to select a program desired to be reproduced. That is, the user refers to the program name displayed in the display area of the display device 5 and operates the operation unit (not shown) provided in the display device 5 to input information related to the program desired to be reproduced. The program information input by the user is transmitted from the display device 5 to the broadcast signal reproduction device 2 and received by the display composition unit 22 described later.

  The display synthesis unit 22 controls the video signal and the audio signal received from the data decoding unit 21 to be output to the display device 5 and reproduced. The display synthesis unit 22 refers to the display data 27 received from the management data analysis unit 23 and synthesizes and displays the video signal and the audio signal desired to be reproduced based on the program information received from the display device 5. Output to the device 5.

  As described above, when the broadcast signal reproduction apparatus 2 according to the present embodiment receives information indicating a program instructed to be reproduced by the user, the broadcast signal reproduction apparatus 2 outputs a video signal and an audio signal corresponding to the program to the composite display apparatus 5. be able to.

  As described above, the broadcast signal reproduction apparatus 2 according to the present embodiment has the delimiter symbol embedded in the management data even when the management data 32 is generated by combining a plurality of program attribute information 18. Alternatively, each attribute information can be separated and output based on the length or data amount of each program attribute information 18. For this reason, the user can select the program attribute information 18 corresponding to each type of content data. Therefore, since the broadcast signal reproduction apparatus 2 can cause the user to select desired program attribute information 18, it can output AV data 31 of program content desired by the user.

(Broadcast signal editing device)
Next, the configuration of the broadcast signal editing apparatus 4 according to the present embodiment will be described with reference to FIG. FIG. 8 shows an embodiment of the present invention, and is a block diagram showing an example of a main part configuration of the broadcast signal editing apparatus 4. As shown in FIG. 8, the broadcast signal editing apparatus 4 includes an AV data separation processing unit (data dividing / combining unit) 41, a management data separation processing unit (data dividing / combining unit) 42, a divided position information converting unit (determining unit). ) 43, a key frame information extracting unit (key frame information extracting unit) 44, and a divided position information input unit (receiving unit) 45. The broadcast signal editing apparatus 4 separates the AV data 31 and the management data 32 according to division position information (designated information) 47 input from the outside.

  The key frame information extraction unit 44 reads the management data 32 stored in the data storage unit 3 and extracts key frame information 46 included therein. The extracted key frame information 46 is the same information as the key frame information 19 extracted by the management data analysis unit 23 in the broadcast signal reproduction apparatus 2 described above.

  That is, the key frame information 46 includes time information indicating the reproduction time 26 of each key frame in the AV data 31 and a TS packet index number corresponding to the frame serving as the key frame. Since the packet size of the TS packet is determined in advance, if the playback time 26 is determined, the TS packet index number of this key frame and the byte position from the beginning of the content data can be converted. The key frame information extraction unit 44 transmits the extracted key frame information 46 to the division position information conversion unit 43.

  The division position information conversion unit 43 refers to the division position information 47 input from the division position information input unit 45 based on the key frame information 46 received from the key frame information extraction unit 44, and determines the division position information 47 The position of the near key frame is obtained. The division position information conversion unit 43 outputs the obtained key frame position as AV data division position information 48.

  That is, the division position information 47 input by the user is time information indicating the reproduction time 26 from the beginning at the reproduction position of each program content included in the AV data 31. On the other hand, the key frame information 46 received from the key frame information extraction unit 44 includes time information of each key frame and an TS packet index number corresponding to this time information. The size is predetermined.

  Therefore, the division position information conversion unit 43 determines the position of the key frame closest to the division position information 47 based on the division position information 47 and the key frame information 46, the TS packet index number in the AV data 31, and the head. Can be represented by the byte position from Then, the division position information conversion unit 43 outputs the index number of this TS packet as AV data division position information 48.

  In this way, the division position information conversion unit 43 uses the reproduction time 26 included in the key frame information 46 for the input division position information 47 (time information indicating the reproduction time 26), and uses this reproduction position information 47 as the division position information 47. The position of the closest key frame can be determined.

  The division position information 47 is not limited to the time information indicating the reproduction time 26, and may be information indicated by the TS packet index number. When the division position information 47 input in this way is an index number of a TS packet, the division position information conversion unit 43 converts the TS packet index number into bytes to obtain the closest key frame information 46. Note that the information indicating the position of the key frame obtained in this case, that is, the AV data division position information 48 is also the TS packet index number.

  The division position information 47 may be information such as the number of bits or the number of bytes from the beginning at the reproduction position of the AV data 31 read from the data storage unit 3. In this case, the division position information conversion unit 43 The AV data division position information 48 can be obtained using the division position information 47 input without using the key frame information 46 as it is.

  The division position information conversion unit 43 transmits the obtained AV data division position information 48 to the management data separation processing unit 42 and the AV data separation processing unit 41.

  The management data separation processing unit 42 divides the management data 32a and the management data 32b at the positions specified by the AV data division position information 48 received from the division position information conversion unit 43. That is, the management data separation processing unit 41 is based on the AV data division position information 48 received from the division position information conversion unit 43, and management information 32a related to the AV data 31a whose playback position is before the AV data division position information 48. Then, management information 32b related to AV data 31b whose playback position is later than the AV data division position information 48 is generated. More specifically, the management data separation processing unit 42 divides the management information as shown in FIG. FIG. 9 is a diagram showing an example of the dividing process of the AV data 31 and the management data 32 in the broadcast signal editing apparatus 4 according to the present embodiment.

  That is, as a premise, as shown in FIG. 9, it is assumed that the program content having nine key frame information 46 of (1) to (9) is divided, and the AV data division position information 48 includes the key frame (3). It is assumed that this is the index number of the TS packet to be specified.

  Under such a premise, the management data separation processing unit 42 divides the management data 32 of the AV data 31 before and after the key frame (3), and one of the divided management data 32a serves as key frame information 46 ( The other management data 32b of 1) and (2) includes key frame information 46 (3) to (9). In addition, as shown in FIG. 9, the program information included in the management data 32 is such that the AV data division position information 48 matches the break of the program, and the program name is indicated at the boundary of the delimiter symbol “●●” as the division position. Separate. The program name information “7:00: News” before the delimiter symbol is included in the management data 32a, and the program name information “8:00 drama ●● 10: 00: today's dish” after the delimiter symbol is managed. It is included in the data 32b.

  On the other hand, as shown in FIG. 10, when the AV data division position information 48 does not match the program break and is divided in the middle of the program, both the management data 32a and the management data 32b include the divided program information. The program name, that is, “8:00: drama” shown in FIG. 10 is included. The management data separation processing unit 42 stores the divided management data 32a and management data 32b in the data storage unit 3. FIG. 10 is a diagram showing an example of the dividing process of the AV data 31 and the management data 32 in the broadcast signal editing apparatus 4 according to the present embodiment.

  That is, the management data 32 includes information related to content data as the program attribute information 18. Therefore, by comparing the program attribute information 18 of the AV data immediately before the position designated by the AV data division position information 48 with the program attribute information 18 of the AV data immediately after the designated position, It can be determined whether or not the position specified by the AV data division position information 48 matches the break of the program.

  If the position specified by the AV data division position information 48 does not coincide with the break of the program by this determination, the management information immediately before the position specified by the AV data division position information 48 and the management information immediately after the position are specified. And assign the program name of the program to be divided into both.

  Note that the program attribute information 18 used for determining whether or not the position designated by the AV data division position information 48 coincides with the break of the program may be information indicating the broadcast time zone of the program, or the program It may be a name.

  The AV data separation processing unit 41 divides the AV data 31 read from the data storage unit 3 into AV data 31 a and AV data 31 b at the position specified by the AV data division position information 48.

  For example, as shown in FIGS. 9 and 10, it is assumed that the content having nine key frame information 46 of (1) to (9) is divided as a premise, and the AV data division position information 48 is the key frame ( 3) is assumed to be the index number of the TS packet close to the key frame (5) in FIG.

  Therefore, the AV data separation processing unit 41 converts the AV data 31 read from the data storage unit 3 before and after the key frame (3), that is, the key frame (3) based on the AV data division position information 48, as shown in FIG. 1) Separated into AV data 31a including (2) and AV data 31b including key frames (3) to (9).

  Alternatively, the AV data separation processing unit 41 converts the AV data 31 read from the data storage unit 3 before and after the key frame (5), that is, the key frame (5) based on the AV data division position information 48, as shown in FIG. The AV data 31a including 1) to (4) and the AV data 31b including key frames (5) to (9) are separated.

  Then, the AV data separation processing unit 41 stores the separated AV data 31a and AV data 31b in the data storage unit 3, respectively. In the description of the specific examples shown in FIGS. 9 and 10, the case where the AV data 31 and the management data 32 are each divided into two parts is described. However, by repeating the process of dividing into two parts, any number can be obtained. It is also possible to perform the division.

  On the contrary, when the AV data 31 and the management data 32 divided into two are concatenated into one data, the process opposite to the process of dividing the AV data 31 and the management data 32 into two respectively. Therefore, the description of this process is omitted.

  As described above, the broadcast signal editing apparatus 4 according to the present embodiment can divide content (AV data 31) including a plurality of programs at an arbitrary point designated by the division position information 47. Further, in the case where the division position does not correspond to the break of each program and the management data 32 of the same program is divided into the management data 32a and the management data 32b as described above, the division is performed in the middle. The program attribute information 18 of the program can be stored in the management data 32a and the management data 32b.

  In the broadcast signal processing system 100 according to the above-described embodiment, the broadcast signal recording device 1, the broadcast signal reproduction device 2, the data storage unit 3, the broadcast signal editing device 4, and the display device 5 are realized by different devices. The configuration was However, you may comprise each part with which each of these apparatuses is provided, and you may comprise as one apparatus.

  Further, the broadcast signal recording device 1, the broadcast signal reproduction device 2, the data storage unit 3, and a single device as shown in FIG. In this case, the AV data 31 can be directly input from the data separating unit 12 to the data decoding unit 21 without being stored in the data storage unit 3 and can be reproduced. If the AV data 31 is recorded in the data storage unit 3 and the reproduction process in the broadcast signal reproduction apparatus 2 is performed at the same time, so-called chasing reproduction is possible.

  FIG. 11 is a block diagram showing an example of a configuration of main parts when the broadcast signal recording apparatus 1 and the broadcast signal reproducing apparatus 2 according to the present embodiment are combined to form a single apparatus.

  Finally, each block provided in each of the above-described broadcast signal recording device 1, broadcast signal reproduction device 2, and broadcast signal editing device 4 may be configured by hardware logic, and by software using a computer as follows. It may be realized.

  That is, the broadcast signal recording device 1, the broadcast signal reproduction device 2, and the broadcast signal editing device 4 are a CPU (central processing unit) that executes a command of a control program that realizes each function, and a ROM (read only) that stores the program. memory), a RAM (random access memory) for expanding the program, a storage device (recording medium) such as a memory for storing the program and various data, and the like. An object of the present invention is to provide program codes (execution format program, intermediate code program) of control programs of the broadcast signal recording device 1, the broadcast signal reproduction device 2, and the broadcast signal editing device 4 which are software that realizes the functions described above. , A source program) recorded on a computer readable recording medium is supplied to each of the broadcast signal recording device 1, the broadcast signal reproduction device 2, and the broadcast signal editing device 4, and the computer (or CPU or MPU) records the recording medium. This can also be achieved by reading and executing the program code recorded on the medium.

  Examples of the recording medium include a tape system such as a magnetic tape and a cassette tape, a magnetic disk such as a floppy (registered trademark) disk / hard disk, and an optical disk such as a CD-ROM / MO / MD / DVD / CD-R. Card system such as IC card, IC card (including memory card) / optical card, or semiconductor memory system such as mask ROM / EPROM / EEPROM / flash ROM.

  The broadcast signal recording device 1, the broadcast signal reproduction device 2, and the broadcast signal editing device 4 may be configured to be connectable to a communication network, and the program code may be supplied via the communication network. The communication network is not particularly limited. For example, LAN, ISDN, ADSL, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication network, etc. can be used. It is. Further, the transmission medium constituting the communication network is not particularly limited, and for example, an infrared ray such as an IrDA or a remote controller may be used for wired communication such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, and Ethernet (registered trademark). , Bluetooth (registered trademark), IEEE802.11 wireless, HDR, UWB, mobile phone network, satellite line, terrestrial digital network, and the like. The present invention can also be realized in the form of a computer data signal embedded in a carrier wave in which the program code is embodied by electronic transmission.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims. That is, embodiments obtained by combining technical means appropriately changed within the scope of the claims are also included in the technical scope of the present invention.

  The recording apparatus according to the present invention reads out type information indicating the type of data from broadcast data, and separates the broadcast data into content data and attribute information based on the type information, and the attribute separated by the separation unit Management data generating means for generating management data for managing the content data based on the information, and when the received transmission signal includes a plurality of types of content data, the management data generating means The management data is generated by combining the attribute information of the plurality of types of content data. Therefore, the present invention can be applied to the case where it is necessary to check the contents of the recorded broadcast data when recording broadcast data including a plurality of types of content data in one file.

1, showing an embodiment of the present invention, is a block diagram showing a main configuration of a broadcast signal recording apparatus. FIG. 1, showing an embodiment of the present invention, is a block diagram showing a schematic configuration of a broadcast signal processing system. FIG. It shows an example of a description format of list display data in the broadcast signal reproduction apparatus according to the present embodiment. It is a figure which shows the correspondence of AV data memorize | stored in the data storage part which concerns on this Embodiment, and management data. It is a figure which shows embodiment of this invention, and is a block diagram which shows the principal part structure of a broadcast signal reproducing | regenerating apparatus. It is a figure which shows the example of a display of the list display data in the display apparatus which concerns on this Embodiment. It is a figure which shows the example of a display of the list display data in the display apparatus which concerns on this Embodiment. 1, showing an embodiment of the present invention, is a block diagram illustrating an example of a main configuration of a broadcast signal editing apparatus. FIG. It is a figure which shows an example of the division | segmentation process of each of AV data and management data in the broadcast signal editing apparatus concerning this Embodiment. It is a figure which shows an example of the division | segmentation process of each of AV data and management data in the broadcast signal editing apparatus concerning this Embodiment. It is a block diagram which shows an example of a principal part structure at the time of combining the broadcast signal recording device and broadcast signal reproducing | regenerating apparatus concerning this Embodiment, and comprising as one apparatus.

Explanation of symbols

1 Broadcast signal recording device (recording device)
2 Broadcast signal playback device (output device)
3 Data storage unit (storage device)
4 Broadcast signal editing device (editing device)
12 Data separation unit (separation means)
13 Management data creation unit (management data generation means)
15 Key frame information extraction unit (extraction means)
16 Broadcast signal 17 Broadcast data 18 Program attribute information (attribute information)
19 Key frame information 22 Display composition unit (content data output means)
24 List display data creation section (attribute information output means)
26 Playback time 28 List display data 31 AV data (content data)
31a AV data (content data)
31b AV data (content data)
32 Management data (management data)
32a Management data (management data)
32b Management data (management data)
41 AV data separation processing unit (data division / combination means)
42 Management data separation processing unit (data division / combination means)
43 Division position information conversion unit (decision means)
44 Key frame information extraction unit (key frame information extraction means)
45 Division position information input section (accepting means)
46 Key frame information 47 Division position information (designated information)
100 Broadcast signal processing system

Claims (9)

A recording device that converts a transmission signal by digital broadcasting into broadcast data and records it in a storage device,
The broadcast data includes content data and attribute information indicating the content data,
Separation means for reading out type information indicating the type of data from the broadcast data, and separating the broadcast data into content data and attribute information based on the type information;
Management data generation means for generating management data for managing the content data based on the attribute information separated by the separation means,
When the received transmission signal includes a plurality of types of content data, the management data generating means generates management data by combining the attribute information of the plurality of types of content data. apparatus. The content data separated by the separation means further comprises extraction means for extracting key frame information, which is information indicating a key frame that is a randomly accessible frame position,
The recording apparatus according to claim 1, wherein the management data generation unit generates management data including the key frame information extracted by the extraction unit.   The recording apparatus according to claim 2, wherein the extraction unit extracts the key frame information in association with information indicating a reproduction time in content data of a key frame indicated by the key frame information. When multiple types of content data are included in the received transmission signal,
The separation means separates and separates the attribute information for each type of content data based on the type information,
The management data generation means inserts a symbol that is not used in the description of the attribute information into a combination position of the attribute information distinguished by the separation means to generate management data. Item 4. The recording device according to any one of Items 1 to 3. When multiple types of content data are included in the received transmission signal,
The separation means separates and separates the attribute information for each type of content data based on the type information,
The said management data production | generation means calculates the data amount of each attribute information distinguished by the said isolation | separation means, and produces | generates the management data including this calculated data amount of Claims 1-3 characterized by the above-mentioned. The recording apparatus according to any one of the above. An output device that acquires content data recorded by the recording device according to any one of claims 1 to 5 and management data and outputs content data corresponding to the selected management data. ,
Attribute information output means for outputting attribute information of content data corresponding to the management data based on the management data;
Content data output means for outputting content data,
When receiving information specifying specific attribute information from the attribute information output by the attribute information output means, the content data output means selects and outputs content data corresponding to the specified attribute information. An output device characterized by. An output device that acquires content data recorded by the recording device according to claim 4 and management data, and outputs content data corresponding to the selected management data,
Attribute information output means for outputting attribute information of content data corresponding to the management data based on the management data;
Content data output means for selecting and outputting content data corresponding to the specified attribute information from the attribute information output by the attribute information output means,
When the management data is generated by combining a plurality of attribute information, the attribute information output means separates the plurality of attribute information based on the delimiter inserted at the combination position of the attribute information. Output device characterized in that the output. An output device for acquiring content data recorded by the recording device according to claim 5 and management data, and outputting content data corresponding to the selected management data,
Attribute information output means for outputting attribute information of content data corresponding to the management data based on the management data;
Content data output means for selecting and outputting content data corresponding to the specified attribute information from the attribute information output by the attribute information output means,
When the management data is generated by combining a plurality of attribute information, the attribute information output means separates and outputs the plurality of attribute information based on the data amount of each attribute information. Output device. An editing device that acquires content data recorded by the recording device according to any one of claims 2 to 5 and management data and edits the content data,
An accepting means for accepting designation information for designating a division or combination position of the content data;
Key frame information extracting means for extracting key frame information from the acquired management data;
Based on the designation information received by the acceptance means and the key frame information extracted by the key frame information extraction means, the key frame position of the content data corresponding to the designation information is used as the division or combination position in the content data. A decision means to decide;
An editing apparatus comprising: data dividing / combining means for dividing or combining each of the management data and the content data in accordance with the division or combining position determined by the determining means.

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