JP2016045660A - Electronic device, system, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a system configured to more easily or accurately search for a content stored.SOLUTION: An electronic device includes, for example, a first acquisition section, a second acquisition section, and a database structure section. The first acquisition section acquires first metadata corresponding to a recorded first content from a first device. The second acquisition section acquires second metadata corresponding to the first content from a second device. The database configuration section configures a database to be used for searching for the first content on the basis of the first metadata and the second metadata.SELECTED DRAWING: Figure 4

Description

  Embodiments relate to an electronic device, a system, and a program.

  Conventionally, a system for collecting content metadata is known.

JP 2008-186272 A

  In this type of technology, for example, it is meaningful if the recorded content can be searched more easily or more accurately.

  The electronic device of the embodiment includes, for example, a first acquisition unit, a second acquisition unit, and a database configuration unit. The first acquisition unit acquires first metadata corresponding to the recorded first content from the first device. The second acquisition unit acquires second metadata corresponding to the first content from the second device. The database configuration unit configures a database used for searching for the first content based on the first metadata and the second metadata.

FIG. 1 is an exemplary schematic configuration diagram of a system according to an embodiment. FIG. 2 is an exemplary block diagram of the electronic apparatus according to the embodiment. FIG. 3 is an exemplary block diagram of another electronic apparatus according to the embodiment. FIG. 4 is an exemplary flowchart of a database configuration method by the electronic apparatus of the embodiment. FIG. 5 is an exemplary schematic diagram of a part of a database configured with the electronic apparatus of the embodiment. FIG. 6 is an exemplary schematic diagram of an image showing a search result using a database configured by the electronic apparatus of the embodiment. FIG. 7 is an exemplary schematic view of another image showing a search result using a database configured by the electronic apparatus of the embodiment.

  In the following, exemplary embodiments are disclosed. The configuration of the embodiment shown below, and the operation and result (effect) brought about by the configuration are examples. The present invention can be realized by configurations other than those disclosed in the following embodiments, and various effects (including derivative effects) based on the basic configuration can be obtained.

  In the present embodiment, as shown in FIG. 1, the system 1 includes a plurality of electronic devices 10, 20 </ b> A to 20 </ b> C. The electronic devices 10 and 20A are, for example, television receivers, the electronic device 20B is, for example, a recorder, and the electronic device 20C is, for example, a storage device. The electronic devices 10 and 20A to 20C may be other electronic devices. Electronic devices that can constitute the system 1 are, for example, set-top boxes, home terminals, personal computers, tablets, smartphones, mobile phones, PDAs (personal digital assistants), video cameras, digital cameras, game machines, NAS (network attached) storage) and the like.

  The plurality of electronic devices 10, 20 </ b> A to 20 </ b> C are connected to each other by a USB (universal serial bus) cable, a high-definition multimedia interface (registered trademark) cable, a LAN (local area network) cable, or the like. Alternatively, the plurality of electronic devices 10 and 20A to 20C may be connected wirelessly by, for example, a wireless LAN. Further, the system 1 may include an apparatus used for communication between the electronic devices 10 and 20A to 20C. The device is, for example, a router or a hub.

  In the system 1, a so-called home network (home LAN) is configured by the plurality of electronic devices 10, 20A to 20C. Various data such as content data, metadata, and control data are communicated between the plurality of electronic devices 10 and 20A to 20C in accordance with, for example, a DLNA (digital living network alliance) guideline. The electronic devices 10 and 20A to 20C can share data such as content recorded in the respective electronic devices 10 and 20A to 20C. For example, the electronic device 10 can reproduce the content recorded in the other electronic devices 20A to 20C, and the electronic device 20A reproduces the content recorded in the other electronic devices 10, 20B, and 20C. can do.

  It would be convenient if the content recorded in the plurality of electronic devices 10, 20A to 20C could be searched more easily or more accurately. Therefore, in the present embodiment, an electronic device in the system 1, for example, the electronic device 10 collects metadata corresponding to the content recorded in the system 1 from the plurality of electronic devices 10, 20A to 20C, and Configure a database to search for content. Below, the case where the electronic device 10 comprises a database is illustrated. When collecting metadata, the electronic device 10 constituting the database does not access the outside of the system 1, and acquires metadata from each of the electronic devices 10, 20 </ b> A to 20 </ b> C, that is, from the home network of the system 1. . The collected metadata is acquired and stored from data of an electronic program guide (EPG) or the like when each electronic device 10, 20A to 20C acquires and records content. Note that the electronic devices 20A to 20C other than the electronic device 10 may have a function of configuring a database, a function of searching, and a function of reproducing content of other electronic devices.

  As shown in FIG. 2, the electronic device 10 includes a control unit 11, a communication unit 12, a tuner unit 13, a display unit 14, an input data acquisition unit 15, an input unit 16, a storage unit 17, and the like.

  The communication unit 12 receives data from other electronic devices 20A to 20C and electronic devices outside the system 1, and transmits data to the other electronic devices 20A to 20C and electronic devices outside the system 1. To do. The communication unit 12 communicates content data, metadata, and control data with the other electronic devices 20A to 20C in the system 1. Further, the tuner unit 13 receives a broadcast wave and extracts content data and metadata from the broadcast wave.

  For example, the display unit 14 displays images such as contents, search results, and a program guide. The display unit 14 is, for example, an LCD (liquid crystal display), an OELD (organic electro-luminescent display), or the like. The display unit 14 may be provided integrally with the electronic device 10, or the separate display unit 14 may be connected to the electronic device 10. Further, the electronic device 10 can include an audio output unit (not shown).

  The input data acquisition unit 15 receives input data from a remote controller (not shown). The input unit 16 is, for example, a touch panel, operation buttons, a keyboard, or the like. The input unit 16 may be an input device separate from the electronic device 10. Based on the input data acquired by the input data acquisition unit 15 or the input unit 16, the control unit 11 can execute reproduction and recording, execute various settings, and execute a search.

  The storage unit 17 stores various data such as program guide data, metadata, and control data. The storage unit 17 can record content data. The storage unit 17 is an example of a recording unit. The storage unit 17 is, for example, a hard disk drive (HDD) or a solid state drive (SSD). Further, an external recording unit 18 can be connected to the electronic device 10. The recording unit 18 records content data. The recording unit 18 can store other data such as metadata. The recording unit 18 may be, for example, an electronic device 20C.

  The storage unit 17 or the recording unit 18 can record the broadcast content over a predetermined period.

  The control unit 11 is, for example, a CPU (central processing unit) or a controller. The CPU can execute various arithmetic processes according to a loaded program (for example, OS (operating system), application, web application, etc.). In the present embodiment, for example, the control unit 11 performs each process (data request unit 11a, first acquisition unit 11b, second acquisition unit 11c, database, etc.) shown in FIG. A configuration unit 11d, a search control unit 11e, a display control unit 11f, a recording control unit 11g, a program information acquisition unit 11h, a storage control unit 11i, a reproduction control unit 11j, and the like.

  The data request unit 11a controls the communication unit 12 to transmit specific data to the other electronic devices 20A to 20C. When the other electronic devices 20 </ b> A to 20 </ b> C receive the specific data, the electronic devices 20 </ b> A to 20 </ b> C transmit the metadata of the recorded content to the electronic device 10 as a response. The communication unit 12 controlled by the data request unit 11a transmits the specific data, for example, at a preset time or a preset time interval.

  As a response to specific data based on the control of the data request unit 11a, the first acquisition unit 11b receives metadata corresponding to the recorded content from the data received by the communication unit 12 from the other electronic devices 20A to 20C. get. The content recorded in the other electronic devices 20A to 20C is an example of the first content, and the metadata stored in the other electronic devices 20A to 20C (other devices) corresponding to the first content. Is an example of first metadata. The other electronic devices 20A to 20C are examples of the first device.

  The second acquisition unit 11c acquires metadata corresponding to the first content from the storage unit 17 or the recording unit 18 of the electronic device 10 (own device). The metadata corresponding to the first content is an example of the second metadata. The electronic device 10 is an example of a second device. The metadata stored in the storage unit 17 and the recording unit 18 of the electronic device 10 (own device) is an example of third metadata. The second acquisition unit 11c is configured such that the storage unit 17, the recording unit 18 or the like stores metadata corresponding to the first content, that is, the second metadata is included in the third metadata. The second metadata is acquired. In the present embodiment, the second acquisition unit 11c does not acquire metadata included in the content data.

  The database configuration unit 11d has the first metadata acquired by the first acquisition unit 11b from the other electronic devices 20A to 20C (other devices) and the second acquisition unit 11c acquired from the electronic device 10 (own device). Based on the second metadata, a database used for content search is configured. The database includes, for example, both first metadata and second metadata stored in association with identifiers indicating metadata attributes. The first metadata and the second metadata are, for example, text data (character string) indicating characters, numbers, symbols, and the like. Note that the first metadata and the second metadata may be, for example, text data separated by a comma or the like. In addition, when the first metadata (for example, a character string) and the second metadata (for example, a character string) are at least partially overlapped, the database configuration unit 11d determines that the overlapping portion is the first metadata and You may delete from one side among 2nd metadata.

  The database configuration unit 11d stores the database in a nonvolatile rewritable storage unit. The database can be stored in, for example, the storage unit 17, the recording unit 18, a storage unit (not shown) other than the storage unit 17, and the recording unit 18. The database configuration unit 11d responds to the recording status of the content in the electronic devices 10 and 20A to 20C in the system 1 by the above-described processing such as the data request unit 11a, the first acquisition unit 11b, and the second acquisition unit 11c. The database can be updated. Note that the metadata included in the database is also used to display search results.

  The search control unit 11e performs a search using search data based on input data acquired from the input data acquisition unit 15 or the input unit 16 in the first metadata and the second metadata included in the database. Here, the search data is, for example, input data itself. Further, the search control unit 11e can use similar data of input data based on a thesaurus as search data. Further, the search control unit 11e may calculate the similarity between the search data and the metadata. The search control unit 11e can execute various known search methods. The search control unit 11e searches the database for content that includes metadata that matches or has high similarity to the search data, the matched metadata, metadata that has a similarity higher than a preset threshold, and the like. get.

  The display control unit 11f controls the display unit 14 so that various images such as content images and images indicating search results are displayed.

  The recording control unit 11g controls the storage unit 17, the recording unit 18, and the like so that the content is recorded or deleted.

  The program information acquisition unit 11h acquires electronic program guide data. The program information acquisition unit 11h acquires program data corresponding to the content recorded in the storage unit 17, the recording unit 18 or the like from the data of the electronic program guide, and stores the program data in the storage unit 17 or the recording unit 18. The content recorded in the storage unit 17 or the recording unit 18 of the electronic device 10 (own device) is an example of the third content. The program data acquired and stored by the program information acquisition unit 11h is an example of third metadata.

  The storage control unit 11 i controls writing (writing) of data such as metadata to the storage unit 17 and reading (reading) of data from the storage unit 17.

  For example, the playback control unit 11j controls the display unit 14 so that the content (for example, a stream) recorded in the electronic devices 10 and 20A to 20C in the system 1 is controlled by the display unit 14 or the display control unit 11f. The recording control unit 11g and the like are controlled.

  As shown in FIG. 3, the electronic device 20A includes a control unit 21, a communication unit 22, a tuner unit 23, a display unit 24, an input data acquisition unit 25, an input unit 26, a storage unit 27, and the like. . Since the other electronic devices 20A to 20C have the same configuration, only the configuration of the electronic device 20A will be described here as a representative.

  The communication unit 22 receives data from other electronic devices 10, 20 </ b> B, 20 </ b> C, electronic devices outside the system 1, etc., and transmits to other electronic devices 10, 20 </ b> B, 20 </ b> C, and electronic devices outside the system 1. Send data to. The communication unit 22 communicates content data, metadata, and control data with the other electronic devices 10, 20 </ b> B, and 20 </ b> C in the system 1. Further, the tuner unit 23 receives a broadcast wave, and extracts content data and metadata from the broadcast wave.

  The display unit 24 displays, for example, images such as contents, search results, and a program guide. The display unit 24 is, for example, an LCD (liquid crystal display) or an OELD (organic electro-luminescent display). The display unit 24 may be provided integrally with the electronic device 20A or may be connected to the electronic device 20A. Further, the electronic device 20A can include an audio output unit (not shown).

  The input data acquisition unit 25 receives input data from a remote controller (not shown). The input unit 26 is, for example, a touch panel, operation buttons, a keyboard, or the like. The input unit 26 may be an input device separate from the electronic device 20A. Based on the input data acquired by the input data acquisition unit 25 or the input unit 26, the control unit 21 can execute playback and recording, and execute various settings.

  The storage unit 27 stores various data such as program guide data, metadata, and control data. The storage unit 27 can record content data. The storage unit 27 is an example of a recording unit. The storage unit 27 is, for example, a hard disk drive (HDD) or a solid state drive (SSD).

  The control unit 21 is, for example, a CPU (central processing unit) or a controller. The CPU can execute various arithmetic processes according to a loaded program (for example, OS (operating system), application, web application, etc.). In the present embodiment, for example, the control unit 21 converts each unit (transmission control unit 21a, recording control unit 21b, program information acquisition unit 21c, storage control unit 21d, etc.) shown in FIG. ).

  The transmission control unit 21a controls the communication unit 22 to transmit metadata corresponding to the content recorded in the electronic device 20A to the electronic device 10 in response to specific data received from the electronic device 10. In addition, the transmission control unit 21 a can control the communication unit 22 to transmit the data of the content recorded in the electronic device 20 </ b> A toward the electronic device 10. The content recorded in the storage unit 27 or the like of the electronic device 20A (another device) is an example of the first content, and the metadata stored in the electronic device 20A corresponding to the first content is the first content. It is an example of metadata.

  The recording control unit 21b controls the storage unit 27 so that the content is recorded or deleted.

  The program information acquisition unit 21c acquires electronic program guide data. The program information acquisition unit 21c acquires program data corresponding to the content recorded in the storage unit 27 and the like from the data of the electronic program guide, and stores the program data in the storage unit 27. The program data acquired and stored by the program information acquisition unit 21c is an example of first metadata.

  The storage control unit 21 d controls writing (writing) of data such as metadata to the storage unit 27 and reading (reading) of data from the storage unit 27. The first metadata can include data added by the control unit 21 of the electronic device 20A in addition to the program data. The data added by the electronic device 20A is data based on an operation on the electronic device 20A, such as “resume information” and “viewing history information” to be described later.

  Programs for causing the electronic devices 10, 20A to 20C, etc. to function are CD-ROM (compact disc ROM), FD (flexible disc), CD-R (CD recordable) files that can be installed or executed. And recorded on a computer-readable recording medium such as a DVD (digital versatile disc). The program can be introduced by being stored in a storage unit of a computer connected to a communication network and downloaded via the network. Further, the program may be incorporated in advance in a ROM or the like.

  Here, an example of a procedure for configuring a database will be described with reference to FIG. First, the electronic device 10 collects first metadata corresponding to the recorded first content from the other electronic devices 20A to 20C (S1). In S1, the control unit 11 functions as the data request unit 11a and the first acquisition unit 11b.

  Next, the control unit 11 functions as the second acquisition unit 11c, and the second metadata corresponding to the content of the first metadata acquired in S1 is stored in the storage unit 17, the recording unit 18, or the like. If so (Yes in S2), the second metadata is acquired (S3).

  Next, the control unit 11 functions as the database configuration unit 11d, and the first metadata acquired in S1, that is, the first metadata acquired from the other electronic devices 20A to 20C (other devices), A database is constructed based on the second metadata acquired in S3, that is, the second metadata acquired from the electronic device 10 (own device) (S4). If S2 is No, S3 is omitted and S4 is executed.

  Here, with reference to FIG. 5, a configuration example of the database will be described. In the example of FIG. 5, the metadata of each content has a total of 14 types of attributes, specifically, 7 types of attributes including identifiers MI01 to MI07 and 7 types of attributes MI11 to MI17. Is set. Specifically, for example, the identifier MI01 is an identifier of “program title” as metadata, the identifier MI02 is an identifier of “program start time” as metadata, and the identifier MI03 is “program end” as metadata. Identifier MI04 is an identifier of “recording start time” as metadata, identifier MI05 is an identifier of “recording end time” as metadata, and identifier MI06 is “broadcast” as metadata. The identifier “MI07” is “broadcast station identifier (network ID, service ID, etc.)” as metadata. Further, for example, the identifier MI11 is an identifier of “program summary information” as metadata, the identifier MI12 is an identifier of “program detailed information” as metadata, and the identifier MI13 is “genre information” as metadata. The identifier MI14 is an identifier of “resume information” as metadata, the identifier MI15 is an identifier of “thumbnail information” as metadata, and the identifier MI16 is an identifier of “chapter information” as metadata. Yes, the identifier MI07 is an identifier of “viewing history information” as metadata. Note that “resume information” is information indicating a reproduction end position when the reproduction is performed halfway, and “viewing history information” is information indicating the presence / absence and the number of times of reproduction. The database can also include metadata with attributes other than those described above.

  In the database, first metadata and second metadata are stored corresponding to each attribute (identifier). In the example of FIG. 5, the first metadata MD011 to MD071 and the second metadata MD012 to MD072 are stored corresponding to the identifiers MI01 to MI07, respectively. Corresponding to the identifiers MI11 and MI12, first metadata MD111 and MD121 are stored, and second metadata MD112 and MD122 are stored. However, in the example of FIG. 5, for each of the identifiers MI13 to MI17, the second metadata MD132 to MD172 is stored, but the first metadata is not stored. As described above, in S4 of FIG. 4, the database configuration unit 11d supplements the second metadata (the own device metadata) for the attribute for which the first metadata (the metadata of the other device) does not exist. be able to. Therefore, for example, when a database is used for content search, more metadata is used for the search. Therefore, the search control unit 11e can search for content more easily or with higher accuracy. For example, when metadata is communicated in accordance with the DLNA guidelines, metadata of all attributes (first metadata) may not be acquired if the manufacturers of the electronic devices 10 and 20A to 20C are different. For example, in the case of FIG. 5, the metadata of the attributes of the identifiers MI13 to MI17 corresponds to metadata that is not shared. According to the present embodiment, even in such a case, metadata (second metadata) is added, and more metadata, that is, more information can be used for content search. it can.

  In the present embodiment, the first metadata and the second metadata of the database can be used as in the following (1) to (4). Here, for example, the first metadata is metadata from another device, and the second metadata is metadata of the own device. Also, for example, the first metadata is metadata acquired by communication according to the DLNA guidelines in the system 1, and the second metadata is not based on communication according to the DLNA guidelines (without going through the network). ) The acquired metadata. Further, for example, the first metadata is metadata having a smaller amount of information (smaller data size) than the second metadata, and the second metadata has a larger amount of information (data size) than the first metadata. Metadata).

  (1) The search control unit 11e uses both the first metadata and the second metadata for the search, and the display control unit 11f uses the first metadata and the second metadata corresponding to the search result. Of these, the display unit 14 may be controlled so that the first metadata is displayed. Thereby, for example, the content can be searched more easily or more accurately, and the display of the search result can be executed more compactly with less information.

  (2) If there is no first metadata having the same attribute as the second metadata, the search control unit 11e uses the second metadata for the search, and the display control unit 11f The display unit 14 may be controlled so that the corresponding second metadata is displayed. Thereby, for example, the content can be searched more easily or more accurately, and the search result can be displayed in more detail.

  (3) When the first metadata and the second metadata having the same attribute are different from each other, the search control unit 11e searches both the first metadata and the second metadata. The display control unit 11f may control the display unit 14 so that the first metadata among the first metadata and the second metadata corresponding to the search result is displayed. Here, the first metadata is metadata obtained corresponding to the content recorded by the user. For this reason, the user may be used to the first metadata rather than the second metadata, or may be familiar with it. Therefore, for example, the content can be searched more easily or more accurately, and the display of the search result can be more easily accepted by the user.

  (4) When the first metadata and the second metadata having the same attribute are different from each other, the database configuration unit 11d determines the data size of the first metadata and the second metadata. The larger one is stored in a storage unit such as the storage unit 17 as a database. Thereby, for example, the content can be searched more easily or more accurately, and the search result can be displayed in more detail. Note that, as an attribute whose information is different between the first metadata and the second metadata, for example, “genre (classification)” or the like can be cited. The “genre” is subdivided into a major category, a middle category, and a minor category, and the metadata may differ depending on the selected category. Note that the metadata of other attributes may be different.

  In the present embodiment, the storage unit 17 and the recording unit 18 of the electronic device 10 (own device) store a plurality of contents (second contents) and metadata corresponding to the contents (second contents) over a certain period in the past. Third metadata) may be recorded. The certain period varies depending on the storage capacity of the storage unit 17 and the recording unit 18, the user settings, and the like. The storage unit 17, the recording unit 18, and the like function as a so-called ring buffer. That is, old content and metadata before a certain period from the current time are deleted from the storage unit 17, the recording unit 18, and the like, and new content and metadata are recorded and added as needed. In this case, if almost all or a large amount of content and metadata broadcast within the certain period are recorded, the first content (contents of other devices) broadcast during the certain period is recorded. There is a high probability that the corresponding second metadata is stored in the storage unit 17, the recording unit 18, or the like. Therefore, for example, the content can be searched more easily or more accurately, and the search result can be displayed in more detail. Note that the storage period of metadata (third metadata) may be set longer than the content recording period. In this case, since the third metadata is stored up to the past of the second content, the probability of being acquired as the second metadata is increased.

  FIG. 6 shows a search result list (list) as an example of the image Im1 displaying the search result of the database. In the image Im1, images Im11 to Im14 indicating contents suitable for the search are shown in a predetermined order together with the search condition (search word). Each of the images Im11 to Im14 includes “program title”, “program start time”, “program end time”, etc., and “program detailed description”. In FIG. 6, “detailed program description” is described as “detailed description”. The “detailed program description” in this case may be information that is not included in the first metadata but is included in the second metadata. The “detailed program description” included in the image Im1 can be evidence that the second metadata has been added to the database used for search and display.

  FIG. 7 shows an image of a program guide as an example of an image Im2 that displays a database search result. The image Im2 includes time rows and channel columns. In the image Im2, information (extracted metadata) of content recorded in the system 1 is displayed, and channels and time frames not recorded in the system 1 are blank. Then, the frame Im21 of the content hit in the search is emphasized thicker than the images of the other frames. A balloon (pop-up) image Im22 corresponding to the frame image Im21 is displayed, and “detailed program description” is included in the image Im22. In FIG. 7, “detailed program description” is described as “detailed description”. The “detailed program description” in this case may be information that is not included in the first metadata but is included in the second metadata. The image Im22 can be evidence that the second metadata has been added to the database.

  As described above, in the present embodiment, for example, the database configuration unit 11d includes the first metadata acquired from the electronic devices 20A to 20C (other devices, the first device) and the electronic device 10 (the own device, The database is configured based on the second metadata acquired from the second device. Therefore, for example, when a database is used for searching for content, more metadata is used for searching, so that the content can be searched more easily or more accurately.

  In the present embodiment, for example, the second acquisition unit 11c is a content (second content) recorded separately from the electronic devices 20A to 20C (first device) by the electronic device 10 (second device). 2nd metadata is acquired from the 3rd metadata memorized corresponding to. Therefore, for example, the third metadata stored in correspondence with the recording of the second content in the electronic device 10 can be used more effectively, and the content can be retrieved more easily or more accurately.

  In the present embodiment, for example, the second content is content recorded over a predetermined period by recording new content and deleting old content. Therefore, for example, content can be searched more easily or more accurately by using more third metadata more effectively.

  As mentioned above, although embodiment of this invention was illustrated, the said embodiment is an example and is not intending limiting the range of invention. The embodiment can be implemented in various other forms, and various omissions, replacements, combinations, and changes can be made without departing from the scope of the invention. The embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof. The present invention can be realized by means other than the configuration and control (technical features) disclosed in the above embodiments. Further, according to the present invention, at least one of various results (including effects and derivative effects) obtained by technical features can be obtained. For example, various electronic devices can configure a database and perform content search and reproduction using metadata. The database may be configured for each user account. In this case, for example, metadata whose attribute is a user account or a parameter corresponding thereto is set. In addition, the system can be configured with electronic devices of the same manufacturer, or can be configured with electronic devices of different manufacturers.

  DESCRIPTION OF SYMBOLS 10 ... Electronic device (2nd apparatus), 11b ... 1st acquisition part, 11c ... 2nd acquisition part, 11d ... Database structure part, 11e ... Search control part, 11f ... Display control part, 14 ... Display part, 20A to 20C: Electronic device (first device).

Claims (9)

A first acquisition unit for acquiring first metadata corresponding to the recorded first content from the first device;
A second acquisition unit that acquires second metadata corresponding to the first content from a second device;
A database constituting unit constituting a database used for searching the first content based on the first metadata and the second metadata;
With electronic equipment.   2. The electronic device according to claim 1, wherein the database configuration unit acquires the second metadata from third metadata stored in the second device corresponding to the recorded second content. machine.   The electronic device according to claim 2, wherein the second content is content recorded for a predetermined period by recording new content and deleting old content. A search control unit that searches the database for data corresponding to input data;
A display control unit for controlling the search result of the search control unit to be displayed on the display unit;
With
The search control unit uses both the first metadata and the second metadata for the search, and the display control unit uses the first metadata and the second metadata corresponding to the search result. The electronic device according to claim 1, wherein the display unit is controlled so that the first metadata is displayed. A search control unit that searches the database for data corresponding to input data;
A display control unit for controlling the search result of the search control unit to be displayed on the display unit;
With
If there is no first metadata having the same attribute as the second metadata, the search control unit uses the second metadata for the search, and the display control unit corresponds to the search result. The electronic device according to claim 1, wherein the display unit is controlled so that the second metadata is displayed. A search control unit that searches the database for data corresponding to input data;
A display control unit for controlling the search result of the search control unit to be displayed on the display unit;
With
When the first metadata and the second metadata having the same attribute are different from each other, the search control unit uses both the first metadata and the second metadata for the search. The display control unit controls the display unit to display the first metadata among the first metadata and the second metadata corresponding to a search result. The electronic device as described in any one of them.   When the first metadata and the second metadata having the same attribute are different from each other, the database configuration unit has a larger data size among the first metadata and the second metadata. The electronic device according to any one of claims 1 to 6, wherein the electronic device is stored. A first device for storing first metadata corresponding to the recorded first content;
A second device for storing second metadata corresponding to the first content;
A third device having a database component that constitutes a database used for searching the stored content based on the first metadata and the second metadata;
With system. Computer
A first acquisition unit that acquires first metadata corresponding to the recorded first content from the first device;
A second acquisition unit configured to acquire second metadata corresponding to the first content from a second device; and the first content based on the first metadata and the second metadata. A database component that constitutes a database used for searching
Program to function as.

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