JP2009021644A - Information processor and processing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a program to be kept by one user from being deleted by other user when a recorder/reproducer is used by a plurality of users. <P>SOLUTION: For each recorded program, the degree of interest is acquired for every time zone of each program based on an operation of a user (e.g. the degree of interest is set low for a fast-forwarded portion and high for a portion viewed by rewinding). A keyword included in each recorded program is extracted, and the degree of preference of each keyword of each program is acquired depending on the degree of interest (the degree of preference of a keyword in a time zone of high degree of interest is set high). On the basis of the degree of preference of each keyword of each program, the degree of preference of each keyword of a plurality of programs recorded in a storage device is acquired and the degree of importance is calculated for each recorded program. When a recorded program is deleted, warning against deletion of program is displayed depending on the degree of importance. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The technical field relates to a recording apparatus for recording a program and a recording method for recording a program.

  As storage media for recording programs, optical discs such as DVDs, hard disk drives (HDDs), and the like are widely used. The following method is disclosed as a conventional example using such a recording medium.

  Japanese Patent Laid-Open No. 2004-151867 “Searches for a program candidate to be deleted in order to secure a free space so that a user can easily determine a program to be deleted when the free space of a recording medium is insufficient. "Providing an information retrieval apparatus and a recording / reproducing apparatus equipped with the same", and as a means for solving the problem, "the information retrieval apparatus 20 records a plurality of pieces of image / audio information including the image / audio data 10 and the management data 11". The management data holding unit 2 that acquires and holds at least a part of the management data 11 from the recorded recording medium 9, the free space acquisition unit 3 that acquires the recordable free space in the recording medium 9, and the recording medium A required capacity input unit 5 for inputting a required capacity required by the image and sound information to be searched, and a search condition for searching for a plurality of image and sound information to be deleted or compressed. Is deleted or compressed from a plurality of video and audio information based on the free space, the search conditions, and the management data 11 of the video and audio information so that the necessary capacity can be secured in the recording medium 9. And a search processing unit 6 for obtaining image / audio information candidates to be combined or combinations thereof ”.

  Patent Document 2 has an issue of “providing a program ranking device that accurately ranks a program that suits the user's preference among programs accompanied by program information”. The viewing frequency for each program is obtained from the viewing history calculation unit 202. The viewing frequency exceeds an arbitrary threshold using the keyword extraction unit 201, the preference analysis unit 203, and the item-specific preference suitability calculation unit 205. An item-specific preference suitability for each program excluding program information of the program is determined The program ranking judgment criterion learning unit 204 determines the item preference suitability and viewing frequency of the program viewed and the program broadcast at the same time. As an input, based on program selection information that outputs a judgment result indicating that a viewed program matches the user's preference, the user's preference is analyzed to improve the accuracy of the criteria for judging the program ranking. Broadcast schedule The program selection unit 206 ranks the programs and automatically selects them based on the criteria for determining the program ranking based on the input preference of each program of each program and the viewing frequency of programs with the same program title. ing.

JP 2004-328608 A (see [Summary]) JP 2006-333423 A (see [Summary])

  However, in Patent Document 1, such a recording / reproducing apparatus requires a user to input conditions for searching for a program to be deleted or compressed, which is complicated for the user. Also, when a plurality of users use the recording / reproducing apparatus jointly, there is a possibility that a program that a certain user wants to keep will be deleted if another user has found a result of a search.

  In addition, in the apparatus of Patent Document 2, deletion of a program is not considered, and a program that the user wants to leave may be deleted by another user.

  As for program ranking, ranking is limited to programs broadcast with program information. In addition, keywords are extracted from the program information, but there is a possibility that the user does not actually view the scenes in the programs containing the keywords. Since the preference extraction parameter only considers the number of times the program is viewed, the same weight is applied to keywords that appear in a scene that is not actually viewed by the user among a plurality of keywords in one program. Since it is calculated, there is a problem that accuracy is deteriorated.

  In order to solve the above-described problems, an embodiment of the present invention includes an input unit to which a user instruction for a video / audio signal recorded on a recording medium is input, a user instruction to be input and a recording medium recorded on the recording medium. A program management unit that calculates a first index for the first video signal based on the words included in the video and audio signal, an output unit that outputs the video and audio signal, and the first video and audio signal are deleted. When the instruction is input to the input unit, the output to output a warning for the deletion of the first video / audio signal based on the first index for the first video / audio signal calculated by the program management unit And a control unit that controls the unit.

  Specifically, the above-described problems can be solved by the invention described in the claims.

  According to the above means, a program can be recorded more efficiently. Specifically, it is possible to prevent the user from accidentally deleting from the recording medium without being conscious of a program having a high degree of preference of other users.

  Hereinafter, embodiments of the present invention will be described.

1. Outline of the present embodiment An outline of the present embodiment will be described. The recording apparatus of this embodiment is
(1) For each recorded program, the degree of interest is acquired for each time zone of the program based on the user's operation (the part that has been fast-forwarded has a low degree of interest, the part that has been rewound and watched has a high degree of interest, etc.) ).
(2) A keyword included in each recorded program is extracted, and a preference degree of each keyword of each program is acquired according to the degree of interest (a preference degree of a keyword in a time zone with a high degree of interest is increased). In the first embodiment, the preference level of each keyword of each program is set as program keyword data 125 (shown in FIG. 9).
(3) From the preference level of each keyword of each program obtained in (2), the preference level of each keyword of a plurality of programs recorded in the storage device is acquired. In the first embodiment, the preference level of each keyword in the recording apparatus is user keyword data 143 (shown in FIG. 10).
(4) The importance of each recorded program is calculated from the degree of preference (user keyword data 143) of each keyword in the recording device acquired in (3).
(5) When deleting a recorded program, a warning about the deletion of the program is displayed according to the importance calculated in (4).

Here, the degree of interest is an index indicating the user's interest in a program or a scene in the program. Specifically, it is determined based on a user operation on the program.
The preference level is an index indicating a user's preference for a word related to a program or a scene in the program. Specifically, it is determined based on the degree of interest about a program or a scene in the program and a word related to the program or the scene.
The importance is an index indicating the importance of a certain program for the user. Specifically, it is determined based on a word included in a certain program and an interest degree of the word calculated for another program or another scene.

  Details and specific examples of each index of interest, preference, and importance will be described later.

Hereinafter, the present embodiment will be specifically described. The recording apparatus of Example 1 is referred to as a recording apparatus 1.

2. Functional Block Diagram FIG. 1 is a diagram illustrating an example of functional blocks of the recording apparatus 1.
As shown in FIG. 1, the recording device 1 includes a CPU 101, a display device 102, an input device 103, a recording / playback unit 104, a program management unit 105, an antenna 106, a tuner 107, a recording medium 108, And an external recording medium connection unit 109.

  The CPU 101 controls the entire recording apparatus. The display device 102 displays video and audio, such as a television or personal computer display or a liquid crystal panel. The input device 103 is used by the user to operate the recording device. For example, the input device 103 is realized by a remote controller, a keyboard, a mouse, a pointing device such as a pen input device, a liquid crystal touch panel, or the like, and a terminal operation input by the user. Get control information about.

  The recording / reproducing unit 104 is an apparatus capable of recording and reproducing a broadcast program on the recording medium 108, and is, for example, a recorder equipped with an HDD or a recordable DVD. The program management unit 105 is a dedicated unit that performs the role of managing and updating the contents of the recording medium 108, and is a program installed on a general-purpose microcomputer, for example. In FIG. 1, the function of the CPU 101 is cut out to represent the program management unit 105, and the program management unit 105 is not necessarily provided separately from the CPU 101. The program management unit 105 may be a program that runs on the CPU 101. The antenna 106 receives broadcast radio waves, such as a parabolic antenna. The tuner 107 demodulates radio waves received from a broadcasting station to obtain broadcast program data, and is a terrestrial digital tuner or a satellite broadcast tuner, for example. The recording medium 108 records broadcast program data. For example, the recording medium 108 may be an optical disk such as a DVD, an HDD, a flash memory, or the like, or may be a detachable medium. The external recording medium connection unit 109 compensates for the storage capacity of the recording medium 108, and includes, for example, an optical disk such as a DVD, an external HDD, a flash memory, or the like.

  The recording / playback unit 104 will be described in more detail. The recording / playback unit 104 includes a recording unit 111, a playback unit 112, a program additional data acquisition unit 113, an operation analysis unit 114, an operation history acquisition unit 115, and an output unit 116. Yes. Further, the reproduction unit 112 includes a decoding device that performs decoding such as MPEG. These 111 to 116 may be included in one circuit, or may be composed of a plurality of circuits. Further, the program management unit 105 may be included in one circuit.

  The recording unit 111 stores the broadcast program data acquired by the tuner 107 in the recording medium 108. For example, if the broadcast program is an analog broadcast including an encoding device that performs encoding such as MPEG, the video and audio are input to the encoding device, and the encoded video / audio data 121 is stored in the recording medium 108. Also good.

  When the broadcast program is a digital broadcast, the broadcast program data has already been encoded, and therefore may be stored in the recording medium 108 as the audio / video data 121 as it is.

  In order to reduce the capacity required for recording a program, the broadcast program data of the digital broadcast is input to the decoding device of the playback unit 112, and the decoded video and audio are input to the encoding device of the recording unit 111. Then, it may be stored in the recording medium 108 as video / audio data 121 encoded at a data compression rate designated by the user.

  The playback unit 112 includes a decoding device that performs decoding such as MPEG, and the video / audio data 121 stored in the recording medium 108 is decoded by the decoding device, and video and audio are output to the output unit 116. Also good.

  In addition, in the case of video and audio obtained by decoding the video / audio data 121 or digital broadcasting, electronic program guide (EPG) data and subtitle data simultaneously broadcast from the broadcasting station are sent to the program additional data acquisition unit 113. input. Also, depending on the instruction contents of the CPU 101, the reproduction of the video / audio is stopped at the designated position, or the reproduction order of the video / audio is freely switched between the forward direction and the reverse direction, or the video / audio is designated at the designated position. It is possible to play from. In addition, the playback unit 112 inputs the instruction content from the CPU 101 to the operation history acquisition unit 115.

  The program additional data acquisition unit 113 stores data other than the video / audio data 121 included in the broadcast program data as program additional data 122 in the recording medium 108. The program additional data acquisition unit 113 converts the decoded video and audio input from the playback unit 112 into an electronic program guide (EPG) or subtitle data simultaneously broadcast from a broadcasting station in the case of digital broadcasting. On the other hand, the program additional data 122 is extracted by performing the program additional data extraction process.

  The program additional data 122 will be described in detail. The program additional data 122 indicates information other than video and audio related to the program, and is character information that can identify the time of appearance of a performer or a corner name or dialogue in the program. The program additional data 122 is added to, for example, caption data broadcast from a broadcasting station in the case of digital broadcasting, telop data included in video broadcast regardless of analog broadcasting or digital broadcasting, audio data, video data, or the like. Tag information or voice character string data that can be acquired by recognizing broadcast voice data.

FIG. 2 shows an example of the program additional data 122. The program additional data 122 is stored in a separate file for each program unit.
The display time 201 indicates the time when the character string data 202 appears with the program start time set to 0. The unit is, for example, a general second. Character string data 202 is acquired character information. The caption data of this embodiment is stored in a plurality of units over the entire program, with the display time 201 and the character string data 202 to be displayed on the screen as one unit. Since the subtitle data of digital broadcasting generally takes a format that can specify the character string and its display time, the subtitle data to be broadcast is stored as it is, or it is unique to all or one of the character string and the display time. It may be stored in a form that cannot be accessed from other programs by changing the encryption or format.

  Since the telop data is embedded in a video broadcast from a broadcasting station using a technique such as computer graphics, for example, processing for detecting an area where the telop appears and character information included in the detected telop area are recognized. Processed and detected as a character string.

  The telop data is stored in a collective format over the entire program, with the coordinate information of the area including the telop or the video extracted from the telop area and the appearance time of the telop area as one unit. The telop data may be recognized as character information included in the detected telop area, and stored as a collective form over the entire program, with the recognized character string and the appearance time as one unit.

  The telop data can be recognized by using, for example, a general OCR (Optical Character Recognition) technique. The data format for saving the telop data is determined by the program additional data acquisition unit 113 taking into account the processing time when acquiring the telop data area and the processing time when recognizing the text information in the telop area. To be within the processing time allowed.

  The voice character string data is acquired from the broadcast voice data by using a general voice recognition technique or the like to acquire character information. The voice character string data to be included in the program additional data is converted into voice recognition intermediate data that is convenient for voice recognition processing, as a set over the entire program with the voice recognition intermediate data and its appearance time as one unit. It may be saved.

  The voice character string data may be stored in a collective form over the entire program, for example, by performing voice recognition processing on the voice recognition intermediate data and using the detected character string and the appearance time as one unit. For the set format of voice character string data, which data format is saved depends on the processing time for converting voice data to voice recognition intermediate data and the processing time for converting voice recognition intermediate data to character strings. The data acquisition unit 113 is determined so as to be within the processing time allowed when operating.

  The program additional data 122 does not necessarily include all of caption data, telop data, and voice character string data, and may include at least one data. The program additional data 122 may simultaneously include data broadcast from a broadcasting station such as EPG, in addition to caption data, telop data, or voice character string data. Further, the program additional data 122 may simultaneously include non-broadcast program related data acquired through an external connection such as the Internet.

  The operation analysis unit 114 analyzes a user operation input via the input device 103 and transmits it to the CPU 101. For example, when the input device 103 is an infrared remote controller, a different signal pattern is input to the operation analysis unit 114 depending on a button pressed by the remote controller. By recognizing the input signal pattern, the operation analysis unit 114 converts the operation contents (physical pattern) such as channel switching, volume adjustment, and program listing into display and the like and transmits them to the CPU 101.

  The operation history acquisition unit 115 acquires the operation history of the user with respect to the recording device and stores it as operation history data 123. In FIG. 1, the instruction content from the CPU 101 to the reproduction unit 112 is input and stored as the operation history data 123. However, other configurations may be used as long as the user's operation history for the recording device can be acquired. The instruction content transmitted to the operation history acquisition unit 115 includes, for example, a program name to be operated or a numeric code for specifying the program name, a time at which the operation is performed, a content of the operation, and a start time in the program in which the operation is performed. , Data including the end time in the operated program.

  The operation history data 123 is an example of data that stores operation details of a user's program. FIG. 3 is a diagram showing an example of operation history data. The operation history data 123 includes, for example, an operation date and time 301 that is an operation time, an operation content 302 that indicates an operation content, a start time 303 that is a time within a program that has started the operation, and a program that has completed the operation. As shown in FIG. 3, the time 304 is stored as an operation history set format for each program. The operation history data 123 is stored in a separate file for each program unit.

  In order to save the operation history data 123 for each program, when the user newly operates the program, it is checked whether or not the operation history data 123 of the program exists, and the operation history data of the program is checked. If 123 exists, a new operation history may be added to the end of the existing operation history data 123. Conversely, if it does not exist, the operation history data 123 may be newly created.

Next, the program management unit 105 in FIG. 1 will be described in more detail. The operation of the program management unit 105 is controlled based on, for example, a command from the CPU 101. The program management unit 105 includes, for example, a scene importance level analysis unit 131, a program keyword generation unit 132, a program keyword generation unit 133, a user keyword generation unit 134, a program importance level generation unit 135, and a program importance level comparison unit 136. .

3. Calculation of Interest Level The scene importance level analysis unit 131 performs processing for generating program interest level data 124 based on the operation history data 123. FIG. 4 shows an example of the processing flow of scene importance analysis. Hereinafter, FIG. 4 will be described.

The scene importance analysis unit 131 is started by the CPU 101 after the user views the program, for example.
In step (hereinafter, “step” is referred to as “S”) 401, the scene importance analysis unit 131 receives input of operation history data from the operation history data 123. The operation history data input in S401 is the operation history data shown in FIG. In S401, the operation history data 123 including N in total is input in order. In the following description, the processing flow after the generalized k-th operation history data 301 is input will be described.

  In S402, the scene importance analysis unit 131 determines whether or not (k−1) th operation history data is held in the next step. If it is determined in S402 that the (k-1) th operation history data is not held (No in S402), the process proceeds to S405, and the input kth operation history data is used for the next calculation. It is stored as the (k-1) th operation history data used for.

  On the other hand, if it is determined in this step that the (k−1) th operation history data is held (Yes in S402), the process proceeds to S403. In S403, the scene importance analysis unit 131 uses the interest level scoring rule table 141 shown in FIG. 6 described later, for example, to calculate the interest level data based on the kth operation content 601 and the (k-1) th operation content 602. The process proceeds to S404.

  In S404, the scene importance analysis unit 131 follows the k-th operation content 601 and the time in the program related to the (k−1) -th operation and the content of the interest level data referenced from the interest level scoring rule table 141. Then, a score is added to the interest degree data 503 at the time in the program interest degree data 124 shown in FIG. The scene importance analysis unit 131 proceeds to S405 after updating the program interest level data 124 in S.

  In S405, the scene importance analysis unit 131 stores the k-th operation history data as (k−1) -th operation history data used for the next calculation, and proceeds to S406.

  In S <b> 406, the scene importance analysis unit 131 determines whether data that has not been input remains in the scene importance analysis unit 131 out of N operation history data 123 in total. If it is determined in S406 that it remains (Yes in S406), the process returns to S401 to input the next operation history data. If it is determined in S405 that all operation history data has been input (No in S406), the scene importance analysis unit 131 ends the process.

  FIG. 5 shows an example of the program interest level data 124 shown in S404. The program interest level data 124 is stored in a separate file for each program unit. The program interest level data 124 includes, for example, an ID 501 for identifying data, a time 502 indicating a time for the ID 501, and an interest 503 quantifying the user's interest in the scene at the time, as shown in FIG. In this way, a set of interest levels 503 at time 502 related to ID 501 is used. The degree of interest 503 is obtained by quantifying the user preference for the scene at the time extracted from the user operation history data 123. However, for example, ranks may be used in addition to digitization.

  An example of quantifying the user's preference for the degree of interest 503 in FIG. 5 will be described. In general, a user performs an operation to surely view a scene of interest such as playback at a normal speed, re-viewing to a scene to be viewed again, or slow playback. On the other hand, the user performs an operation for shortening the viewing time by an operation such as fast-forwarding or jumping for an uninteresting scene. In addition, the user may watch the same program more than once, and after viewing the entire program, select only the scene that he / she wants to watch again and play it back, or play back a specific scene using an application such as digest playback. Perform operations such as It is assumed that the degree of interest 503 is calculated from the contents of all the operation history data 123 at the time using the degree-of-interest scoring rule table 141 included in the management data 140 according to the contents of the instruction.

  The management data 140 is a generic term for an interest score scoring rule table 141, a keyword dictionary 142, and user keyword data 143, which will be described later. The management data may be stored in the recording medium 108, may be stored in a memory in the apparatus, or may be recorded on a removable external recording medium.

  FIG. 6 shows an example of the interest degree scoring rule table 141. One interest score scoring rule table 141 is stored for each recording device. As shown in FIG. 6, the interest degree scoring rule table 141 includes, for example, a current operation source 601 and a previous operation source 602. For example, when normal playback is performed up to 30 seconds in the previous operation and fast forward is started in the current operation, the fast forward row 603 of the current operation source 601 and the playback row 604 of the previous operation source 602 are orthogonal to each other. "-0.5 seconds before transition -0.5" is selected as the degree of interest. That is, -0.5 is added to the degree of interest in the range from 25 seconds to 30 seconds.

It should be noted that the items such as the fast forward row 603 and the reproduction row 604 included in the current operation source 601 and the current operation source 602 in FIG. 6 may be arbitrarily determined. For example, program loading, playback, jump, fast forward, fast reverse, slow forward, slow reverse, stop, etc. can be considered. Further, the interest score scoring rule table 141 of FIG. 6 may be created for only a part of the operations in a certain system, or created with the score of operations unnecessary for calculation being 0 points. May be. In addition, the numerical values of the items such as 605 in the interest degree scoring rule table 141 of FIG. 6 may be arbitrarily determined. In addition, the numerical value of each item such as 605 in the degree-of-interest scoring rule table 141 in FIG. May be.

4). Next, the program keyword generation unit 132 included in the program management unit 105 in FIG. 1 will be described. The program keyword 132 has a function of generating program keyword data 125 from the program additional data 122 generated when the program is recorded and the program interest level data 124 generated by the scene importance analysis unit 131. Hereinafter, generation of the program keyword data 125 by the program keyword generation unit 132 will be described using the flowchart of FIG.

The processing may be started after the processing of the scene importance analysis unit 131 is finished, or may be controlled by the CPU 101.
In S701, the program keyword generating unit 132 acquires a list of keywords related to the target program (hereinafter referred to as “program keyword list”). The keyword related to the program is, for example, a proper noun such as a name of a person, a title name, or a corner name appearing in the program. The program keyword generation unit 132 uses, for example, the program additional data 122 to acquire a list of keywords. As illustrated in FIG. 2, the program additional data 122 includes character strings appearing in a program acquired by a technique such as broadcast subtitle extraction processing, voice recognition processing, and telop recognition processing, and the display time of the character strings as one unit. Character string data.

Here, the process of S701 will be described in more detail.
FIG. 8 shows a processing flow of S701 using the character string data. When the processing of S701 in FIG. 7 is started, the program keyword generation unit 132 inputs the character string data 202 from the program additional data 122 in FIG. 2 one by one to the program keyword generation unit in order in S801, and proceeds to S802. .

In S802, the program keyword generating unit 132 decomposes the input character string data into words by a general morpheme (minimum unit having meaning in the language) analysis, and proceeds to S803. This morphological analysis can be broken down into verbs, particles, nouns, and the like.
In S803, the program keyword generating unit 132 acquires the decomposed words one by one, and proceeds to S804.
In S804, the program keyword generation unit 132 determines whether or not the acquired word is a proper noun.

If it is determined in S804 that the name is a proper noun (Yes in S804), the process proceeds to S805. If it is determined not to be a proper noun (No in S804), the process proceeds to S807.
In determining whether or not this is a proper noun, adjectives and adverbs can be included in addition to proper nouns. For example, when it is determined that the determination is a proper noun, an adjective, or an adverb, the process may move to S805, and when it is determined that it is neither a proper noun, an adjective, or an adverb, the process may move to S807.

In S805, the program keyword generation unit 132 determines whether or not the proper noun is included in the existing program keyword list.
If it is determined in S805 that it is not included in the keyword list (No in S805), the process proceeds to S806. If it is determined that it is included in the keyword list (Yes in S805), the process proceeds to S807. Move.
In S806, the program keyword generating unit 132 newly registers the proper noun in the program keyword list, and proceeds to S807.
In S807, the program keyword generating unit 132 determines whether there is an unacquired word among the words decomposed in S802.

  If it is determined in S807 that there are still unacquired words (Yes in S807), the process returns to S803. On the other hand, if it is determined in S807 that all the words have been acquired and the process has been completed (No in S807), the process proceeds to S808.

In step S808, it is determined whether there is unprocessed character string data. If it is determined in S808 that there is unprocessed character string data (Yes in S808), the process returns to S801 to process the next character string data. On the other hand, if it is determined in S808 that all the character string data has been processed (No in S808), the keyword list extraction process 701 ends the process. This processing flow is the first keyword extraction processing method.

  FIG. 8 described above is a processing flow when the program keyword list extraction process is performed on the character string data included in the program additional data 122. On the other hand, the program additional data 122 may be composed of data that cannot be deciphered unless processing such as decryption is performed, such as coordinate information data obtained by extracting a telop area or data obtained by encrypting caption information. is there. In such a case, for example, the processing for extracting character string data by performing OCR or decoding processing on the telop area may be performed before S801 in FIG. As a result, the processing after S801 in FIG. 8 can be performed even for data that cannot be decoded unless some processing is performed. In this way, the flow for performing some processing before S801 in FIG. 8 is defined as the second keyword extraction processing method.

  In S701, a morphological analysis may be performed on a character string describing the program content included as part of the EPG information included in the program additional data 122, and the acquired proper noun may be used as a program keyword list. In this method, the number of keywords is smaller than that of the program keyword list extracted from the processing flow of FIG. 8, but the processing load of the keyword extraction processing 701 can be reduced by reducing the number of morphological analysis processes. This processing flow is defined as the third method of keyword extraction processing.

The keyword extraction process 701 prepares a keyword dictionary 142 corresponding to genre information, program name, and broadcasting station that can be acquired from EPG information of a program in advance in the management data 140, for example, so that the words included in the keyword dictionary 142 May appear in the character string data in the program, a process of registering in the program keyword list may be used. This method makes it possible to omit morphological analysis. This processing flow is defined as the fourth method of keyword extraction processing.
The keyword dictionary 142 is data including words that are keywords.

  In the keyword extraction process 701, regarding the selection of the first method, the second method, the third method, and the fourth method, the recording device 1 may uniquely select any single method, or A plurality of methods may be used in combination, or another method may be used.

  Also, depending on the program genre, broadcast format such as digital broadcast or analog broadcast, video resolution, audio format in programs such as bilingual broadcast and stereo broadcast, accuracy for programs such as telop and voice recognition, etc. Thus, the above four methods may be selected on a program basis. For example, in the case of an analog broadcast program, subtitle data and EPG information cannot be acquired. Therefore, the program keyword list may be extracted using the second method of telop recognition. On the other hand, in the case of a digital broadcast program, a program keyword list may be extracted by using all methods together.

With the above processing, the program keyword generating unit 132 finishes the program keyword list extraction processing shown in S701 of FIG. 7 and proceeds to S702.
In S702, the program keyword generation unit 132 acquires character string data from the program additional data 122, for example, and proceeds to S703. The program additional data 122 may be character string data having a character string and a display time as one unit as described above, or may be, for example, coordinate information indicating a telop area and non-character string data having the display time as a unit. Good. In the former case, character string data may be acquired one unit at a time in this step. In the latter case, the character string and the display time are converted into character string data in the same way as the method for acquiring the character string from the non-character string data in the second method for extracting the program keyword list described above. Just enter.

  In S703, the program keyword generation unit 132 determines whether or not character string data has been acquired in the process of S702. If it is determined in S703 that the character string data has been acquired (Yes in S703), the process proceeds to S704. On the other hand, if it is determined in S702 that character string data has not been acquired, that is, if processing has been performed on all character string data (No in S703), the program keyword generating unit 132 ends the processing.

  In S704, the program keyword generation unit 132 acquires keywords in order from the program keyword list acquired in S701, and proceeds to S705.

  In S705, the program keyword generation unit 132 determines whether or not the processing of S706 to 710, which will be described later, is completed for the acquired keyword, and when it is determined that there is an unprocessed keyword (in the case of Yes in S705). The process moves to S706. On the other hand, if it is determined that the processing for all keywords has been completed (No in S705), the process returns to S702 to acquire the next character string data.

  In S706, the program keyword generation unit 132 determines whether or not the keyword acquired in S705 is included in the character string acquired in S702. If it is determined that the keyword acquired in S705 is included in the character string acquired in S702 (Yes in S706), the process proceeds to S707, and if it is determined that it is not included (No in S706). ), The process returns to S704 to process the next keyword.

In S707, the program keyword generating unit 132 acquires the appearance time of the character string determined to contain the keyword in S706, and proceeds to S708.
In S708, the program keyword generation unit 132 acquires the interest level of the closest time in the program interest level data 124 for the appearance time acquired in S707, and proceeds to S709.
In S709, the program keyword generating unit 132 calculates the keyword preference degree using the degree of interest acquired in S708.

An example of the keyword preference level and its calculation method will be described below.
It can be said that the keyword included in the scene actually viewed by the user in the program has a higher preference for the user than the keyword included in the scene skipped without watching at all. The keyword preference degree is obtained by quantifying the degree of preference of the user to the keyword by using the program interest degree data 124 obtained by quantifying the interest in the scene in the program.

  The keyword preference degree is numerical data given by Equation 1. The keyword preference calculated by Equation 1 has a property that a keyword included in a scene with a high degree of interest is larger than a keyword included in a scene with a low degree of interest.

数１においてＰｇＫｅｙｉｎｔ（ｋ）はｋ番目のキーワードに対するキーワード嗜好度を示している。Ｉｎｔ（ｉ，ｔ）は、キーワードがi回目に出現した時刻における図５の興味度５０３である。またｗ（ｉ）は、ｉ番目に出現したキーワードに対する重み演算である。またＭａｘＩｎｔは、キーワードが出現した各時刻の興味度の中での最大値である。

In Equation 1, PgKeyint (k) indicates the keyword preference for the kth keyword. Int (i, t) is the degree of interest 503 in FIG. 5 at the time when the keyword appears for the i-th time. W (i) is a weight calculation for the i-th appearing keyword. MaxInt is the maximum value in the degree of interest at each time when the keyword appears.

In S709, for example, the keyword preference level is acquired by the above method, and the process proceeds to S710.
In S710, the program keyword generation unit 132 reflects the result in the program keyword data 125, and returns to S704.
FIG. 9 shows an example of the contents of the program keyword data 125. The program keyword data 125 is stored in a separate file for each program unit. The program keyword data 125 includes, for example, an ID 901, a keyword name 902, and a keyword preference level 903.

The ID 901 is a number for identifying a keyword.
The keyword name 902 is a list of program keyword lists obtained in S701.
The keyword preference level 903 is a keyword preference value corresponding to the keyword name 902 obtained in S709.

  In S710, the program keyword generation unit 132 updates the keyword preference 903 corresponding to the keyword name 902 acquired in S704 with the keyword preference calculated in S709.

  The video / audio data 121, the program additional data 122, the operation history data 123, the program interest level data 124, and the program keyword data 125 may be generated for each program. In the following description, the video / audio data 121, the program additional data 122, the operation history data 123, the program interest level data 124, and the program keyword data 125 may be collectively referred to as recorded program information 120.

  Next, the user keyword generation unit 133 in FIG. 1 will be described. The user keyword generation unit 133 generates user keyword data 143 including keyword preference levels of a plurality of programs using the program keyword data 125 of various programs obtained by the program keyword generation unit 132. Further, the user keyword generation unit 133 may generate user keyword data 143 for each classification unit according to the program classification condition. In addition, the user keyword generation unit 133 may calculate a preference degree for a keyword acquired by a method other than the program keyword data 125 and reflect it in the user keyword 143.

FIG. 10 shows an example of user keyword data 143. The user keyword data 143 includes a header part 1001 and a data part 1011 as shown in FIG.
A header portion 1001 is a field that mainly stores conditions that constitute user keyword data. The header part 1001 includes items of a number 1002, a condition 1003, and setting contents 1004.
A number 1002 indicates an item number.
A condition 1003 indicates a condition of a program used for configuring the data part 1011. The condition 1003 is an example, and a condition such as a program category, a recorded folder name, a recording date / time range, a channel number, or a character included in a title is inserted in each item.
A setting content 1004 indicates a setting value for each item of the condition 1003. In the example of FIG. 10, the setting content is set to gourmet for the category condition. The condition 1003 can include a content selection formula 1005.
The content selection formula 1005 is a formula that defines a content selection scheme for when a plurality of conditions are set. The content of the content selection formula 1005 is inserted into the item of the setting content 1004 in the same manner as the items included in the other conditions 1003. The content selection formula 1005 can set a formula that can express a logical sum, logical product, negation, or a plurality of combinations with respect to a plurality of conditions set by the condition 1003 and the setting content 1004.

  The contents to be inserted into the setting content 1004 item for the content selection formula 1005 determine the priority for calculating the content of the number 1002, a symbol indicating logical sum and logical product or negation, and the like. Can be expressed by a symbol or the like. The header part 1001 must include the content selection formula 1005 whenever there are two or more condition items. On the other hand, in the case where only one condition is configured, the content selection formula 1005 need not be included. The number and contents of conditions that can be set in the header part 1001 are not particularly limited. However, the system side can also restrict in advance according to the setting of the recording apparatus 1, the storage capacity, and the calculation speed.

  Next, the data part 1011 of the user keyword data 143 will be described. The data included in the data portion 1011 is data collected from the program keyword data 125 for the program that matches the conditions set in the header portion 1001, and includes an ID, a keyword, and a preference level, like the program keyword data 125. ID 1012 is a number for identifying a keyword. The keyword name 1013 is a list of keyword lists acquired according to the setting content of the header part 1001. The keyword preference degree 1014 is a result of calculating the preference degree for the keyword list acquired based on the setting content of the header part 1001.

  Next, the processing flow of the user keyword generation unit 133 will be described. FIG. 11 shows a processing flow of the user keyword generation unit 133.

The user keyword generation unit 133 starts processing according to a command from the CPU 101. The processing of the user keyword generation unit 133 is started, for example, when explicitly instructed by the user from the input device 103 or at a fixed time (for example, every Sunday at 1 am).
When the user keyword generation unit 133 starts the processing, the program keyword data 125 is input in S1101, and the process proceeds to S1102.
In S1102, it is determined whether or not the classification condition of the user keyword data 143 matches the classification condition of the input program. For example, as shown in FIG. 10, when gourmet is set as the classification condition of the user keyword data 143, the program is related to gourmet using, for example, program genre information of EPG information included in the program additional data 122. What is necessary is just to determine whether it is a program.

  If it is determined in S1102 that the program matches the classification condition of the user keyword data 143 (Yes in S1102), the process proceeds to S1103. On the other hand, if it is determined in S1102 that the program does not match the classification condition of the user keyword data 143 (No in S1102), the processing for the program is terminated, and the process proceeds to S1109.

  In step S1109, it is determined whether all target program keyword data has been processed. If it is determined in S1109 that unprocessed program keyword data remains (No in S1109), the process returns to S1101 to input the next program keyword data. On the other hand, when it is determined in S1109 that all program keyword data has been processed (Yes in S1109), the user keyword generation unit 133 ends the processing.

  In S1103, the preference level corresponding to the keyword name is acquired in order from the input program keyword data 125, and the process proceeds to S1104. In the example of FIG. 10, a user keyword for a program corresponding to the content selection formula 1005 is created. That is, a user keyword is created for a program whose program category is gourmet.

In S1104, it is determined whether or not the acquisition of the keyword name and the degree of preference is successful from the program keyword data 125. When the calculation of all the keywords has been completed and the keyword acquisition has failed (No in S1104), The process for the program ends, and the process moves to S1109. On the other hand, if it is determined that the keyword name and the preference level are correctly acquired from the program keyword data 125 (Yes in S1104), the process proceeds to S1105.
In S1105, it is determined whether or not the keyword name acquired in S1103 is included in the user keyword data 143. If it is determined in S1105 that the keyword name acquired in S1103 is included in the user keyword data 143 (Yes in S1105), the process proceeds to S1106, while the keyword name acquired in S1103 is the user keyword data 143. If it is determined that it is not included (No in S1105), the process proceeds to S1107.

  In S1106, the preference level corresponding to the keyword name matching the keyword name acquired in S1103 is acquired from the user keyword data 143, and the process proceeds to S1108.

  In S1107, the keyword preference level 1014 corresponding to the keyword name acquired in S1103 is added as 0 to the keyword name item of the user keyword data 143, and the process proceeds to S1108.

  In S1108, the keyword preference degree 1014 of the user keyword data 143 in FIG. 10 is updated, and the process returns to S1103.

  Here, an example of a method for updating the keyword preference degree 1014 of the user keyword data in S1108 will be described. The update is calculated according to Equation 2, for example.

数２におけるＩｎｔ(ｉ）はｉ番目の番組に対する図９のキーワード嗜好度９０３を示し、ｌｅｎ(i)はｉ番目の番組全体の長さを示し、Ｈ(ｌｅｎ(ｉ))は番組の長さに応じて決定される重みである。また数２のUserKeyIntは、計算されたユーザキーワードデータのキーワード嗜好度を示している。図１０のキーワード嗜好度１０１４は、複数の番組の同一キーワードに対する図９のキーワード嗜好度９０３の和で計算される。一方で、番組キーワードデータ１２５のキーワード嗜好度は複数の番組間で比較すると、番組長が長い番組の方がキーワードの登場回数が多いため、番組長が長い番組は、キーワード嗜好度９０３が大きくなる可能性がある。よって番組の長さにより正規化するためにＨ(ｌｅｎ(ｉ))を乗じることとしているが、Ｈ(ｌｅｎ(ｉ))の定義についてはシステムの都合により設定してもよい。Ｈ(ｘ)の値を常に１とすれば、重み付けを行わないことと同等となる。
ユーザキーワード生成部１３３は、以上の処理によりユーザキーワードデータ１４３を生成する。

Int (i) in Equation 2 indicates the keyword preference 903 of FIG. 9 for the i-th program, len (i) indicates the length of the entire i-th program, and H (len (i)) is the program length. It is a weight determined according to the size. In addition, UserKeyInt in Formula 2 indicates the keyword preference degree of the calculated user keyword data. The keyword preference degree 1014 in FIG. 10 is calculated as the sum of the keyword preference degrees 903 in FIG. 9 for the same keyword of a plurality of programs. On the other hand, when the keyword preference of the program keyword data 125 is compared among a plurality of programs, a keyword with a longer program length has a higher keyword preference 903 because a program with a longer program length has a greater number of keywords. there is a possibility. Therefore, H (len (i)) is multiplied to normalize the program length, but the definition of H (len (i)) may be set according to the convenience of the system. If the value of H (x) is always 1, it is equivalent to not performing weighting.
The user keyword generation unit 133 generates user keyword data 143 through the above processing.

Next, the program importance level generation unit 134 of FIG. 1 will be described. The program importance generation unit 134 generates the program importance 144 using the user keyword data 143. The program importance 144 is a numerical value obtained by accumulating the number of times each keyword name included in the user keyword data 143 is included in the program and the keyword preference, and further weighting according to the length of the program itself. It is. Further, the program importance generation unit 134 can input a condition for selecting a program that is a calculation target of the program importance, and can calculate the program importance only for a program that matches the specific condition. .

5). Calculation of Importance Here, the processing flow of the program importance generation unit 134 will be described. FIG. 12 shows a processing flow of the program importance generation unit 134. The start of processing is controlled by the CPU 101. The processing of the program importance generation unit 134 is started, for example, when explicitly instructed by the user from the input device 103 or at a fixed time (for example, every Sunday at 1 am).

  In S1201, the program importance level generation unit 134 acquires a program for which the program importance level is calculated from the recording medium 108, and proceeds to S1202.

  In S1202, it is determined whether the program acquired in S1201 matches the program selection conditions. The program selection condition is, for example, information on a recorded program such as a program category or channel number, information on a viewed program only, or information on a viewing state such as only an unviewed program, or a program manually recorded by a user. The recording method information such as a program recorded by a method such as whether the recording device automatically records the program can be used. If the program importance generation unit 134 determines in S1202 that the program input in S1201 matches the selection condition (Yes in S1202), the program importance generation unit 134 proceeds to S1203. On the other hand, if it is determined in S1202 that the program input in S1201 does not match the selection condition (No in S1202), the program importance generation unit 134 proceeds to S1205 without performing the process related to the program. Note that the program importance level generation unit 134 can omit the input of program selection conditions, and in this case, S1202 may be omitted.

In S1203, the program importance generation unit 134 obtains user keyword data 143 for calculating the program importance 144, and the process proceeds to S1204.
In S1204, the program importance is calculated based on the user keyword data 143 acquired in S1203, and the process proceeds to S1205. Here, the program importance level acquisition processing in S1204 will be described with reference to the processing flow shown in FIG. When the process moves to S1204 in the flowchart of FIG. 12, the process shown in FIG. 13 is started.

In S1301, the program importance generation unit 134 first acquires the program additional data 122 of the program to be calculated regarding the acquisition of the program importance, and proceeds to S1302.
In S1302, one unit of character string data is acquired from the program additional data 122 acquired subsequently, and the process proceeds to S1303. Here, the method for acquiring the character string data in S1302 is the same as that in S702 of FIG.

In S1303, the keyword name 1013 and the keyword preference 1014 in the data part 1011 of FIG. 10 are sequentially acquired from the user keyword data 143 as a set, and the process proceeds to S1304.
In S1304, it is determined whether the keyword name acquired in S1303 is included in the character string data acquired in S1302. If it is determined in S1304 that the keyword name acquired in S1303 is not included (No in S1304), the acquired keyword is skipped and the process proceeds to S1307. On the other hand, if it is determined in S1304 that the keyword name acquired in S1303 is included (Yes in S1304), the process proceeds to S1305.

In S1305, the keyword preference level corresponding to the keyword name is acquired, and the process proceeds to S1306.
In S1306, the keyword preference acquired in S1305 is added to the program importance, and the process proceeds to S1307.

  In step S1307, it is determined whether there is unprocessed data in the user keyword data 143 in order to perform processing for the next keyword. If it is determined in S1307 that there is unprocessed data in the user keyword data 143 (Yes in S1307), the process returns to S1305 to continue the processing. On the other hand, if it is determined in S1307 that there is no unprocessed data in the user keyword data 143 (No in S1307), the process proceeds to S1308.

  In S1308, it is determined whether or not unprocessed character string data exists in the program additional data 122. If it is determined in S1308 that unprocessed character string data exists in the program additional data 122 (Yes in S1308), the process returns to S1302 to continue the processing. On the other hand, if it is determined in S1308 that there is no unprocessed character string data in the program additional data 122 (No in S1308), the process proceeds to S1309.

  In S1309, the weight of the program importance is calculated. Since the magnitude of program importance is proportional to the number of occurrences of a keyword, it may be influenced by the length of the program. The process of S1309 is a process for improving the accuracy of the program importance level, and may be omitted to reduce the burden on the program importance level generation unit 134. Subsequently, when the processing of S1309 is completed, the program importance level acquisition processing in S1204 of FIG.

  When the program importance level generation unit 134 ends the program importance level acquisition process in S1204 of FIG. 12, the program importance level generation unit 134 proceeds to S1205 and determines whether or not the program importance levels have been calculated for all target programs. If it is determined in S1205 that there is an uncalculated program, the process returns to S1201 to continue the processing. On the other hand, if it is determined in S1205 that the program importance levels of all programs have been calculated, the program importance level generation unit 134 ends the process.

The interest level, the preference level, and the importance level described above are not necessarily numerical values. For example, it may be a rank according to the calculation result (A rank is a certain numerical value or more, B rank is a certain range).

6). Operation for Deleting Program Next, a method in which the recording apparatus 1 deletes a program by a user operation will be described. The program may be deleted by deleting the data of the program from the hard disk, or may not be actually deleted from the hard disk, but only deleted apparently so as not to be seen by the user. Since apparently deleting only does not reduce the capacity of the hard disk, apparently deleted data may be deleted when the capacity of the hard disk becomes full.

  FIG. 14 shows an example of a recorded program list screen displayed on the display device 102 of the recording device 1. The recorded program list screen in FIG. 14 is an example of a screen that is mainly displayed when the user browses a program list recorded in the recording device 1. The CPU 101 acquires a program list from the video / audio data 121 recorded on the recording medium 108. The user operation screen shown in FIG. 14 includes a program list display unit 1401, a program thumbnail display unit 1402, a program description display unit 1403 included in the program 1401, and a program condition selection unit 1404.

  The program list display unit 1401 is an area for displaying a list of programs recorded on the recording medium 108 of the recording device 1. The program list display unit 1401 includes a program thumbnail display unit 1402 that displays a representative still image of each program in a list of recorded programs (hereinafter referred to as “recorded program list”) acquired from the management data unit 140 in FIG. The program description display unit 1403 displays the title name, broadcast channel name, and broadcast date and time of each program.

  An operation when the user deletes the program indicated by the program thumbnail display unit 1402 in FIG. 14 via the input device 103 in FIG. 1 will be described. FIG. 15 shows a processing flow of the recording apparatus 1 when the user deletes the program indicated by the program thumbnail display unit 1402 of FIG. 14 via the input device 103 of FIG.

  The start of processing is controlled by the CPU 101 after an instruction to delete a program is given from the user by the input device 103, for example.

When the user deletes a program, the CPU 101 first acquires the program list displayed on the program list display unit 1401 in FIG. 14 from the video / audio data 121 recorded on the recording medium 108 in S1501. , S1502 follows.
In S1502, the program importance for the program list acquired in S1501 is acquired, and the process proceeds to S1503. The program importance level in S1502 is acquired when the CPU 101 in FIG. 1 instructs the program importance level acquisition unit 134 to acquire the program importance level in the program list acquired in S1501. The program importance level acquisition unit 134 in FIG. 1 executes, for example, according to the processing flow in FIG. 13 described above.

In S1503, when all the program importance levels are acquired in S1502, the CPU 101 arranges the programs in the program list based on the acquired program importance levels, acquires the ranking of each program, and proceeds to S1504. You may acquire the order of each program of a program list by arranging from the program with high (or low) program importance, for example. FIG. 15B shows an example of the data structure of the acquired program importance level. As shown in FIG. 15B, each program is composed of a program name 15B1 and a program importance level 15B2. Data in the format of FIG. 15B is temporarily stored in the RAM.
FIG. 15C shows an example in which the data of FIG. 15B are arranged in the order of program importance.
In S1504, the order of programs to be deleted is acquired from the sorted program list generated in S1503, and the process proceeds to S1505.

  In S1505, it is determined whether or not the rank of the program to be deleted acquired in S1504 is positioned above (or below) a predetermined rank preset in the system. If it is determined in S1505 that the rank of the program to be deleted is located above (or below) a predetermined rank preset in the system (Yes in S1505), the process proceeds to S1506. On the other hand, if it is determined in S1505 that the rank of the program to be deleted is not located above (or below) a predetermined rank set in advance by the system (No in S1505), it is determined for the user. Therefore, the program moves to S1508, and normal program deletion is executed. A case will be specifically described where the data of the fourth or lower rank is set to be unimportant when the arranged program importance as shown in FIG. 15C is obtained. If the program to be deleted is the program name “Axx”, the program is in the fifth place, and the program is deleted.

In S1506, since it is determined that the program is important to the user, a warning about deleting the program, information on the importance (for example, the ranking of the importance), an option for whether or not to delete the program, and the like are displayed. , The process proceeds to S1507.
A case will be specifically described where the data of the fourth or lower rank is set to be unimportant when the arranged program importance as shown in FIG. 15C is obtained. When the program to be deleted is the program name “Δ × ○”, since the program is in the third place, an option of whether or not to delete the program is displayed.

  An example of warnings and options displayed in S1506 of FIG. 15 is shown in FIG. After executing S1505 in FIG. 15, the CPU 101 transitions from the screen in FIG. 14 to a screen with the deletion warning display unit 1601, the deletion execution selection unit 1602, and the deletion rejection selection unit 1603 in FIG. The deletion warning display unit 1601 is a character string display area that represents a warning to the user regarding deletion such as the fact that the program is important. The character string displayed on the deletion warning display unit 1601 may be set in advance by the system. The deletion execution selection unit 1602 and the deletion rejection selection unit 1603 are selected when the user selects whether or not to actually delete via the input device 103 in FIG. The display of the section 1601, the deletion execution selection section 1602, and the deletion rejection selection section 1603 disappears, and the display transitions to the display screen of FIG. Note that the deletion warning display unit may provide the user with a means of displaying the ranking of the importance level, such as “A program with the third highest importance level, but will it be deleted?”. For programs whose importance level exceeds a predetermined value, a program importance level value such as “A program with importance level 1234, will you delete it?” May be displayed.

  Further, the order acquired in S1503 is displayed not only in the step, but also on, for example, the recorded program list screen of FIG. 14 or a screen not directly related to deletion (for example, a screen for selecting a program to be played back). Also good. This makes it possible to refer to the importance of the program not only when deleting but also when reproducing, for example.

Further, in S1506, instead of displaying the warning, the program that is the target of the warning cannot be deleted, the fact that the program is so important that it cannot be deleted is displayed, and the processing may be terminated.
In step S1507, the CPU 101 determines which of the deletion execution selection unit 1602 and the deletion rejection selection unit 1603 in FIG. 16 displayed in step S1506 in FIG. 15 has been selected. If it is determined in S1507 that the deletion execution selection unit 1602 is selected (Yes in S1507), the process proceeds to S1508. On the other hand, if it is determined in S1507 that the deletion rejection selection unit 1602 is selected (No in S1507), the process ends without performing deletion.
In step S1508, the CPU 101 actually deletes the program and ends the process.

  It should be noted that even if the degree of importance is low for the user in S1505 and normal deletion processing is performed in S1508 (No in S1505), a confirmation message asking whether or not the deletion is to be performed may be displayed. . The confirmation message may be different from the warning displayed in step S1506.

  Further, the recorded program list screen shown in FIG. 14 can be accompanied by a program condition selection unit 1404. The program condition selection unit 1404 presents, for example, a method for selecting the program conditions to be displayed on the program list display unit 1401 to the user. As shown in FIG. 14, for example, a recorded program viewing condition selection unit 1405 is configured. The recorded program viewing condition selection unit 1405 may further include a recorded program all selection unit 1411, a recorded program already viewed selection unit 1412, and a recorded program unviewed selection unit 1413. When the recorded program all selection unit 1411 is selected, all programs recorded in the recording apparatus 1 are displayed on the program list display unit 1401. When the recorded program already viewed selection unit 1412 is selected, a program that has been viewed among the programs recorded in the recording device 1 is displayed on the program list display unit 1401. When the recorded program non-viewing selection unit 1413 is selected, an unviewed program among the programs recorded in the recording device 1 is displayed on the program list display unit 1401.

  After selecting the program conditions to be displayed on the program list display unit 1401 by the program condition selection unit 1404, the user selects the program indicated by the program thumbnail display unit 1402 of FIG. 14 via the input device 103 of FIG. The operation when deleting will be described.

  In FIG. 17, after the program condition selection unit 1404 selects the program conditions to be displayed on the program list display unit 1401, the user is indicated by the program thumbnail display unit 1402 of FIG. 14 via the input device 103 of FIG. 2 shows an example of a processing flow of the recording apparatus 1 when deleting a recorded program.

The start of processing is controlled by the CPU 101 after an instruction to delete a program is given from the user by the input device 103, for example.
In step S <b> 1701, when the user executes program deletion after selecting a program condition to be displayed on the program list display unit 1401 in the program condition selection unit 1404 in step S <b> 1401, the program condition selection unit 1404 first selects the program condition. It is determined whether there is user keyword data 143 that matches the condition. This determination may be realized, for example, by checking the contents of the header part 1001 of FIG. 10 included in the user keyword data 143 and whether or not the condition selected by the program condition selection part 1404 is met.

  In S1701, when the contents of the header part 1001 in FIG. 10 and the conditions selected by the program condition selection part 1404 do not match all the user keyword data 143 (No in S1701), the process proceeds to S1702, while in S1701 When the contents of the header part 1001 in FIG. 10 and the conditions selected by the program condition selection part 1404 match all the user keyword data 143 (Yes in S1701), the process proceeds to S1703.

  In S1702, the user keyword data 143 is newly generated by the user keyword generation unit 133 in FIG. 1 under the conditions selected by the program condition selection unit 1404. The user keyword generation unit 133 in FIG. 1 executes according to the processing flow in FIG. 13 described above.

  Subsequently, the recording apparatus 1 selects the user keyword data 143 acquired in S1701 or S1702 when the user executes program deletion after the program condition selection unit 1404 selects the program conditions to be displayed on the program list display unit 1401. The processing after S1703 is performed. The processing from S1703 to S1710 in FIG. 17 is the same as the processing from S1501 to S1508 in FIG.

  The program condition selection unit 1404 may enable not only the selection related to the viewing state of the recorded program described above but also the condition selection based on the genre, channel, recorded program name, etc. included in the EPG information of the recorded program. Or you may combine according to several conditions.

  Further, in the recorded program list screen shown in FIG. 14, a means for displaying on the program list display unit 1401 may be provided by arranging them according to the importance of the program. Since the programs displayed on the program list display unit 1401 are arranged according to the importance of the program, it is possible to easily determine whether or not a user using a certain program is unnecessary. Accordingly, when a program is selected and deleted from the program list display unit 1401 after being arranged on the program list display unit 1401 according to the importance of the program, the warning screen in FIG. 16 may be omitted. By omitting the warning screen in FIG. 16, the user can reduce the operation of the input device 103. Further, the program importance calculated in the program list display unit 1401 may be displayed at the same time. By simultaneously displaying the calculated program importance level in the program list display unit 1401, it is possible to deepen the user's understanding. Further, it may be provided with means for displaying the content by dividing the program importance value into appropriate stages.

  In addition, the deletion execution selection unit 1601 in FIG. 16 presents the user with an option as to whether or not to delete. Other means for increasing may be presented simultaneously. Since it is a program with high preference for other users who share the recording device, a storage method by means such as compression or movement that does not completely erase the program may be provided.

  When the program is deleted, the video / audio data 121, the program additional data 122, the operation history data 123, the in-program importance data 124, and the program keyword data 125 of FIG. 1 relating to the deleted program may all be deleted. . When the program keyword data 125 is deleted, the user keyword generation unit 133 needs to recalculate the user keyword data 143. The recalculation of the user keyword data 143 is performed when the deletion is executed. However, if the recalculation of the user keyword data 143 is performed at the time of deletion, it may take time until the next operation becomes possible after the user executes the deletion. Therefore, the user keyword data 143 may be set to be recalculated at the date and time designated in advance by the system, and the recalculation of the user keyword data 143 may be avoided when the program is deleted.

  The recording device 1 acquires the keyword included in the user keyword data 143 from the program additional data 122, but the user may have a function of adding a keyword via the input device 103. The CPU 101 can update the user keyword data 143 by calculating the program keyword generation unit 132 and the user keyword generation unit 133 for the keyword newly added by the user via the input device 103.

  The recording device 1 may allow the user to operate the ranking of keywords included in the user keyword data 143. When the user changes the keyword included in the user keyword data 143 from the n-th place to the k-th place, from the preference degree 1014 in the data part of FIG. 10 showing an example of the user keyword data 143, the k-th place What is necessary is just to extract the preference degree of a nth keyword and the preference degree of a nth keyword, and add the difference to the preference degree of a nth keyword.

  In addition, when the recording apparatus 1 is provided with a general automatic recording system, means for automatically deleting a program having a low program importance level when recording is not possible because the recording medium 108 has a small free space when recording. You may have. By having means for automatically deleting programs with low program importance, the user can handle the recording device without worrying about the remaining capacity.

  Further, the recording apparatus 1 may provide means for presenting a program with a low program importance level to be deleted when recording cannot be performed due to a small free space in the recording medium 108 when setting the reserved recording. Since the users are arranged in the order of low program importance, it is possible to easily distinguish programs unnecessary for the user.

  In addition, when the recording apparatus 1 is provided with a general automatic recording system, means for automatically deleting a program having a low program importance level when recording is not possible because the recording medium 108 has a small free space when recording. You may have. By having means for automatically deleting programs with low program importance, the user can handle the recording device without worrying about the remaining capacity.

  Further, the recording apparatus 1 shows a configuration in which the recorded program information 120 is included in the recording medium, but it may be included in the external recording medium 109.

  Next, Example 2 will be described. Since the present embodiment has the same configuration as that of the first embodiment, the description of the common configuration may be omitted. The recording apparatus of Example 2 is referred to as a recording apparatus 2.

  In general recording apparatuses such as HDD recorders and PCs, there are apparatuses that support a directory structure in order to distinguish owners of recorded programs. The recording device 2 has a configuration when the directory structure is supported in addition to the first embodiment.

  FIG. 18 is a diagram illustrating a configuration example of functional blocks of the recording apparatus according to the present embodiment. FIG. 18 is almost the same as the configuration of FIG. 1, which is a block diagram of the first embodiment, and differs only in having directory information 1844 in the management data 1840. The other blocks are substantially the same as those in FIG.

  Directory information 1844 is information indicating in which directory each recorded program is included. As the directory information 1844, each recorded program can have a plurality of directory information. This indicates that a plurality of users are interested in one program in a recording apparatus used by a plurality of users. The directory information 1844 may include the address of the recorded program data because the recorded program data may be included in the external recording medium 1809.

  The directory information 1844 is generated and updated when performing scheduled recording or organizing a recorded program list. FIG. 19 shows an example of a screen displayed when the user records a program in the recording apparatus according to the present embodiment. When the user executes reserved recording of a program via the input device 1803 in FIG. 18, for example, a program title portion 1901, a reserved program recording time portion 1902, a program channel portion 1903, a program image quality setting portion 1904, and a program directory setting portion 1905. And a screen composed of the program related information presentation unit 1906 is displayed.

The program title section 1901 is an item for setting the name of a reserved recording program.
A program reserved recording time section 1902 is an item for setting a time for performing scheduled recording.
A program channel unit 1903 is an item for setting a channel of a recorded program.
The program image quality setting unit 1904 is an item for setting the compression rate of the recorded program.
A program directory setting unit 1905 is an item for setting a directory for a recorded program.
The program related information presentation unit 1906 is an item for presenting information related to a recorded program such as performer information of the recorded program.

  The program title portion 1901, the reserved program recording time portion 1902, the program channel portion 1903, and the program related information 1906 may be automatically input by EPG information or the like in addition to being manually input by the user at the time of reserved recording. When the program directory setting unit 1905 is set as shown in FIG. 19 and the recording apparatus according to the present embodiment executes reserved recording, the recorded program belongs to the directory of the contents of the program directory setting unit 1905. 18 directory information 1844.

  Next, FIG. 20 shows an example of a recorded program list screen displayed on the display device 1802 in the recording apparatus of the present embodiment. In FIG. 20, a directory selection unit 2005 is added to FIG. 14 in the first embodiment. The directory selection unit 2005 is an item that can display only programs belonging to the selected directory on the program list display unit 2001. When “user A” is selected in the directory selection unit 2005 shown in FIG. 20, only the programs belonging to the directory indicating the user A among all the programs in the recording apparatus in this embodiment are displayed. On the other hand, when “all” is selected in the directory selection unit 2005, all programs in the recording apparatus in this embodiment are displayed.

  In the recorded program list screen of FIG. 20, the user can move or copy the recorded program to each directory. When the user performs an operation for moving or copying a specific program via the input device 1803 in FIG. 18, for example, a program movement type selection unit 2006 and a program movement destination display unit 2007 are displayed as shown in FIG. Is done.

The program movement type selection unit 2006 is an item for selecting whether or not to move or copy a specific program to a directory, for example.
The program movement type selection unit 2007 is an item for selecting the movement destination of the selected program, for example.

  For example, when the movement is selected by the program movement type selection unit 2006, the belonging information of the movement source directory for the specific program included in the directory information 1844 is deleted, and the new directory belonging to the directory selected by the program movement type selection unit 2007 is deleted. Information is added.

  On the other hand, when the copy is selected by the program movement type selection unit 2006, the belonging information of the source directory for the specific program included in the directory information 1844 is maintained, and the directory of the directory newly selected by the program movement type selection unit 2007 is maintained. Affiliation information is added. Thus, the directory information 1844 is generated and updated.

  The recorded program list screen of FIG. 20 includes a program condition selection unit 2004 that performs the same operation as the recorded program list screen of FIG. 14 in the first embodiment. In the recording apparatus of this embodiment, the program condition selection unit 2004 and the directory selection unit 2005 can be used simultaneously on the recorded program list screen of FIG. When the program condition selection unit 2004 and the directory selection unit 2005 are used simultaneously on the recorded program list screen of FIG. 20, the program list display unit 2001 satisfies the conditions of the program condition selection unit 2004 and belongs to the directory selection unit 2005. A list of programs to be displayed may be displayed.

  After the program conditions to be displayed on the program list display unit 2001 are selected by the program condition selection unit 2004 and the directory selection unit 2005 in FIG. 20, the user displays the program thumbnail display unit in FIG. 20 via the input device 1803 in FIG. An operation for deleting a program indicated in 2002 will be described. FIG. 21 shows the program thumbnail display unit shown in FIG. 20 via the input device 103 shown in FIG. 1 after the user selects the program conditions to be displayed on the program list display unit 2001 by the program condition selection unit 2004 and the directory selection unit 2005. FIG. 21 shows an example of the processing flow of the recording apparatus 2 in the case where the program indicated by 2002 is deleted.

The start of processing is controlled by the CPU 1801 after an instruction to delete a program is given from the user by the input device 1803, for example.
In S2101, the CPU 1801 selects a condition for the program to be displayed on the program list display unit 2001 by the program condition selection unit 2004 and then deletes the condition first selected by the program condition selection unit 2004. It is determined whether there is user keyword data 143 that matches the above. The recording apparatus according to the present embodiment determines, for example, whether or not user keyword data 143 matching the condition selected by the program condition selection unit 2004 has been created for each directory included in the directory selection unit 2005 in S2101. For example, the contents of the header part 1001 shown in FIG. 10 included in the user keyword data 143 for each directory and the condition selected by the program condition selection part 2004 are checked.

  In S2101, if the contents of the header part 1001 of FIG. 10 for each directory and the conditions selected by the program condition selection unit 2004 do not match all the user keyword data 143 (No in S2101), the process proceeds to S2102.

  On the other hand, if the user keyword data 143 that matches the contents of the header part 1001 in FIG. 10 and the conditions selected by the program condition selection part 2004 is generated for each directory in S2101, the process moves to S2103 and is found in this step. The subsequent processing is performed using the user keyword data 143 thus obtained.

  In S2102, the user keyword generation unit 133 in FIG. 18 newly generates the user keyword data 143 related to the conditions selected by the program condition selection unit 2004 and each directory, and the process proceeds to S2103. The user keyword generation unit 133 in FIG. 18 generates user keyword data 143 in the same procedure as the processing flow in FIG. 13 described above. In S2102, user keyword data 143 for each directory is generated under the conditions selected by the program condition selection unit 2004. Since the acquisition method of the user keyword data 143 is the same as that of S1702 of FIG.

  In S2103, the CPU 1801 acquires the directory to which the program to be deleted selected by the user in FIG. 20 belongs from the directory information 1844 included in the recording device 2, and proceeds to S2104.

In S2104, the recorded program list belonging to the directory acquired in S2103 is acquired, and the process proceeds to S2105.
In S2105, using the user keyword data that matches the directory acquired in S2103 among the user keyword data acquired in S2101, the program importance is acquired for the recorded program list acquired in S2103, and the process proceeds to S2106. The method for acquiring the program importance level is the same as S1704 in FIG.

In S2106, the program list acquired in S2104 is arranged based on the program importance acquired in S2105, and the process proceeds to S2107.
In S2107, the ranking in the recorded program list acquired from the program list arranged in S2106 is acquired for the program to be deleted selected by the user in FIG. 20, and the process proceeds to S2108.

  In step S2108, it is determined whether there is another directory to which the program to be deleted selected by the user in FIG. 20 belongs.

  If it is determined in S2108 that there is another directory to which the program to be deleted selected by the user in FIG. 20 belongs (Yes in S2108), the process returns to S2103, and the processing of the next acquired directory is performed. I do.

  On the other hand, if it is determined in S2108 that no other directory to which the program to be deleted selected by the user in FIG. 20 belongs (No in S2108), the process proceeds to S2109.

  In S2109, it is determined whether or not the order of the deleted program acquired in S2107 is within a predetermined order in the programs in all directories. In S2109, when the rank of the deleted program acquired in S2107 is included in a predetermined rank or higher for at least one directory (Yes in S2109), the process proceeds to S2110. On the other hand, if it is determined in S2109 that the rank of the deleted program acquired in S2107 is included below a predetermined rank for all directories (No in S2109), the process proceeds to S2112.

In S2110, warnings and options regarding program deletion are displayed in the same manner as in S1708 of FIG. 17 in the first embodiment, and the process proceeds to S2111.
In S2111, as in S1709 in FIG. 17 of the first embodiment, the same means as the deletion warning display unit 1601 in FIG. If the program is lower than a predetermined rank in all directories, the program is deleted without warning, but if it is higher than a predetermined rank in at least one directory, a warning is displayed. At that time, it may be displayed in which directory a predetermined rank or higher. Further, the order for each directory may be displayed.

  S2111 and S2112 are the same as S1709 and S1710 in FIG.

  By the above means, it is possible to prevent a program having a high preference level for a user who is not operating the recording apparatus from being deleted by another user without permission.

  The directory information 144 may be included in the recorded program information 120. When the directory information 144 is included in the recorded program information 120, even if the entire recorded program information 120 relating to a certain program is moved or copied to the external recording medium 108, all of the recording medium 107 and the external recording medium 108 are included. By searching the directory information 144 from the recorded program information 120, it is possible to perform a process equivalent to the mechanism of having the directory information 144 in the management data 140 described above.

  Similarly to the first embodiment, the recorded program list screen shown in FIG. 20 may be provided with means for displaying on the program list display unit 2001 in line with the importance of the program. For example, when “user A” is selected in the directory selection unit 2005 in FIG. 20 and the programs displayed in the program list display unit 2001 are arranged according to the degree of program importance, the “user A” to be used Since the program importance levels are displayed in ascending or descending order, the order of program importance levels of the programs to be deleted in the recorded program list belonging to the directory of “user A” is checked in S2109 of FIG. There is no need.

  Further, in order to simplify the processing in FIG. 21, the processing after S2110 may be performed by determining only whether the program to be deleted is included in the directory without calculating the program importance. If the program to be deleted belongs to multiple directories, the program selected for deletion from one directory may belong to another directory, so the program importance level is not calculated. Just warning is effective. Therefore, when “all” is selected in the directory selection unit 2005 in FIG. 20, steps S2101 to S2108 in FIG. 21 are omitted, and it is only determined in S2109 whether or not the program to be deleted belongs to the directory. It's okay. If “user A” is selected in the directory selection unit 2005 of FIG. 20, steps S2101 to S2108 in FIG. 21 are omitted, and whether the program to be deleted belongs to a directory other than the directory of user A in S2109. It may be determined whether or not. In this way, the process can be simplified. If the determination based on the program importance level is performed, it is possible to reduce the number of scenes that are warned when an unnecessary program is deleted, and thus it is possible to reduce the number of times the user makes a selection.

  Similarly to the first embodiment, the recording apparatus 2 provides a means for presenting a program having a low program importance level to be deleted when recording cannot be performed due to a small free space in the recording medium 108 when setting reservation recording. May be provided. Further, for programs existing in a plurality of directories, if the program importance level of each directory is calculated and positioned in a predetermined rank or higher in another directory, it may not be selected as a deletion candidate.

  Similarly to the first embodiment, when the recording apparatus 2 includes a general automatic recording system, when recording is not possible due to a small free space in the recording medium 108, a program with a low program importance level is provided. You may have a means to delete automatically. Further, for programs existing in a plurality of directories, if the program importance level of each directory is calculated and positioned in a predetermined rank or higher in another directory, it may not be a deletion candidate.

  Next, Example 3 will be described. Note that the description of the configuration common to the first and second embodiments is omitted. The recording apparatus of Example 3 is referred to as a recording apparatus 3.

  If it is possible to identify which user is using a recording device such as an HDD recorder or PC by a plurality of users, an operation history can be acquired for each user. It becomes possible to calculate the importance of each program. The recording device 3 shows a configuration in which a user authentication mechanism is added to the first and second embodiments.

  FIG. 22 is a diagram illustrating a configuration example of functional blocks of the recording apparatus according to the present embodiment. FIG. 22 is almost the same as the configuration of FIG. 1 which is a block diagram of the first embodiment and FIG. 18 which is a block diagram of the second embodiment, except that the user authentication unit 2217 is included in the recording / playback unit 2204. . Further, the operation history data 2223, the interest degree data 2224, and the program keyword data 2225 are generated for each user who operates (uses).

  In this embodiment, data obtained by collecting operation history data 2223, interest degree data 2224, and program keyword data 2225 will be described as user program data 2226. Further, the management data portion 2240 has user identification information 2245. Further, the management data portion 2240 has user program information 2246. The other blocks are substantially the same as those in FIG.

  The user authentication unit 2217 analyzes the input data and determines whether or not it matches the content of the user specifying information 2245, and specifies the user who is currently using the recording apparatus in the present embodiment.

  The user identification information 2245 can be, for example, a user ID and password information via the input device 2203 used in a PC or the like. Alternatively, a remote controller equipped with a user specifying button may be used for the biometric authentication using the input device 2203, fingerprint, vein, or the like. Further, the user authentication unit 2217 may identify the user by collating the user identification information included in the external recording medium 2208 with the user identification information 2245. Further, the user using the recording apparatus may be specified from information that distinguishes the user input by the user without using a password, fingerprint, vein, or the like.

  The user program information 2246 is information indicating which user the program is owned by, and may include information similar to the directory information in the second embodiment. Therefore, the user program information 2246 may be included in the management data portion 2240 or may be included in the program data portion 2220 as with the directory information in the second embodiment.

  When the user authentication unit 2217 identifies the user in use from the user identification information 2245, the user authentication unit 2217 notifies the CPU 2201 of the identified user information. When the CPU 2201 is notified of the user information, the operation history acquisition unit 2215 stores the instruction content to the playback unit 2212 in the operation history data 2223 included in the user program data 2226 for the user operating the playback unit. To instruct. The CPU 2201 generates a scene importance level analysis unit 2231, a program keyword generation unit 2232, and a program importance level generation unit so as to generate interest level data 2224 and program keyword data 2225 for the operation history data 2223 included in the user program data 2226. 2233 is instructed.

  When the recording device 3 displays the recorded program list by the user's operation, the recording device 3 has substantially the same configuration as that in FIG. Next, after the recording device 3 selects the program conditions to be displayed on the program list display unit 2001 by the program condition selection unit 2004 in FIG. 20, the user selects the program thumbnail display unit in FIG. 20 via the input device 103 in FIG. An operation for deleting a program indicated in 2002 will be described.

  23, after the program condition selection unit 2004 selects the program conditions to be displayed on the program list display unit 2001, the user is indicated by the program thumbnail display unit 2002 in FIG. 20 via the input device 103 in FIG. 6 shows a processing flow of the recording apparatus 3 when deleting a recorded program. FIG. 23 is performed by substantially the same steps as FIG. 21 which is a processing flow when deleting a program in the second embodiment. Therefore, only different steps will be described.

  The start of processing is controlled by the CPU 2201 after an instruction to delete a program is given from the user by the input device 2203.

In S2301, first, the user information registered from the user identification information 2245 is acquired one by one, and the process proceeds to S2302.
In S2302, it is determined whether or not there is user keyword data calculated using the user program data 2226 of the user acquired in S2301, which matches the program condition selection unit of FIG. If it is determined in S2302 that the user keyword data does not exist (No in S2302), the process proceeds to S2303. On the other hand, if it is determined in S2302 that user keyword data is present (Yes in S2302), the process proceeds to S2304.

In S2303, user keyword data 2226 is generated using the user keyword data 2226, and the process proceeds to S2304. The processing in S2303 is the same as that in other embodiments (for example, S1702 in FIG. 17).
The processing flow from S2304 to S2307 is the same as the steps from S2104 to S2107 in FIG.

  In S2308, when the rank of the program to be deleted is acquired in S2307, it is determined whether or not there is a user who has not yet acquired the rank of the program to be deleted in the user identification information 2245. If it is determined in S2308 that there is a user who has not yet acquired the order of the program to be deleted in the user identification information 2245 (Yes in S2308), the process returns to S2301. On the other hand, if it is determined in S2308 that all ranks have been acquired (No in S2308), the process proceeds to S2309.

In S2309, it is determined whether or not the program to be deleted is below a predetermined rank for all users. If it is determined in S2309 that the program to be deleted is one or more users and a predetermined rank or higher (Yes in S2309), the process proceeds to S2310. On the other hand, in S2309, if the program to be deleted is below the predetermined rank for all users (No in S2309), the process moves to S2312, and the program deletion is executed.
In S2310, a warning and options regarding program deletion are displayed. In S2310, similar to S1709 in FIG. 17 of the first embodiment, the same means as the deletion warning display unit 1601 in FIG. In this case, it may be displayed which user has a predetermined rank or higher. Moreover, you may display the order | rank for every user of the said program.

  Since the processing method after S2310 is the same as the step after S2110 in FIG.

  By executing the program deletion as described above, it is possible to prevent a program that is highly important for other users from being easily deleted.

  Further, as in the second embodiment, a means may be provided in which the recorded program list screen shown in FIG. 20 is arranged according to the degree of program importance and displayed on the program list display unit 2001. The order of the arranged programs is the order in which the program importance of the user currently used is large or small. When the programs displayed in the program list display unit 2001 are arranged according to the magnitude of the program importance, they are displayed in ascending or descending order of the program importance for the user A being used. Therefore, S2309 in FIG. At this time, it is not necessary for the user A to check the program importance ranking of the program to be deleted in the recorded program list.

  The recording device 3 may support the same directory as that in the second embodiment. When “user A” is selected from the directory selection unit 2005 in FIG. 20, a list of programs belonging to the directory name “user A” is displayed on the program list display unit 2001. Similar to the second embodiment, it is possible to move and copy programs between directories.

  The recording apparatus 3 may automatically generate a directory corresponding to each user included in the user specifying information 2245. When a user-specific directory is prepared, for example, when performing scheduled recording, processing such as automatically belonging to the directory of the user who performs the scheduled recording operation is performed. Also, depending on the system settings, the operating user can move or copy from another directory to his / her own directory, but cannot move or copy to another user's dedicated directory. It may be possible to perform access control.

Further, in order to simplify the processing in FIG. 23, the processing after S2310 may be performed by determining only whether the program to be deleted is included in the directory without calculating the program importance. If the program to be deleted belongs to multiple directories, the program selected for deletion from one directory may belong to another directory, so the program importance level is not calculated. Just warning is effective. Therefore, when “all” is selected in the directory selection unit 2005 in FIG. 20, steps S2301 to S2308 in FIG. 21 are omitted, and the program to be deleted belongs to a directory other than the user who is operating in S2309. It is only necessary to determine whether or not. However, the determination based on the program importance level can reduce the number of scenes that are warned when an unnecessary program is deleted, and thus the number of times of input via the user input device can be reduced.
Further, in order to simplify the processing in FIG. 23, the recording device 3 does not calculate the program importance and determines whether or not the program to be deleted is not viewed by other users and performs the processing from S2310 onward. It may be. As a method for determining whether or not another user is not viewing, for example, it may be determined whether or not the operation history data 2223 for another user's program exists. S2301 to S2308 in FIG. 21 are omitted, and if at least one other user has not been viewed in S2309, the processing from S2310 is performed. On the other hand, if the program has been viewed by all other users, the program deletion in S2312 is executed. Further, when displaying the S2310 warning, a means for displaying which user has not been viewed may be provided.

  Further, the recording apparatus 3 may determine whether or not the program to be deleted has not been viewed by other users at S2309 in FIG. In other words, if the degree of interest of other users in the program to be deleted is low and all users have been viewed, the process proceeds to S2312, and if not, the processes in S2310 and subsequent steps are performed. In addition, regarding the display of a warning that is performed when one or more directories have a predetermined rank or higher, it may be displayed which user has a predetermined rank or higher at that time. Moreover, you may display the order | rank about each user.

  Further, as described in the first embodiment, the user is presented with an option of whether or not to delete in S2310. For example, the capacity of the recording medium 2208 is increased by means such as compressing or moving the program video / audio data 2221. Other means may be presented simultaneously. Since it is a program with high preference for other users who share the recording device, a storage method by means such as compression or movement that does not completely erase the program may be provided. When moving, if the user authentication unit 2217 includes a means for collating the external medium 2308 with the user specifying information 2245, the moving destination of the program may be specified and displayed. As a method for identifying the program destination, a method may be considered in which the user-external medium 2308 having the highest rank of the deletion target program acquired by the processing from S2301 to S2308 in FIG. 23 is selected. The recording device 3 may store a processing history such as program deletion, movement, and compression so that other users can refer to the processing history of the program. In particular, when processing such as deletion, movement, or compression is performed on a program that is highly important to other users, the program is deleted or moved after the user has successfully authenticated the user using the recording device 3. It may be notified that processing such as compression or compression has been performed.

  Similarly to the first and second embodiments, the recording apparatus 3 can select a program with low program importance for a user who performs scheduled recording when the recording medium 108 has a small free space and cannot be recorded. Means for presenting for deletion may be provided. In addition, when the program importance level is low for a user who performs scheduled recording, while the program importance level of another user is equal to or higher than a predetermined order, it may not be presented as a deletion candidate.

1, 18, and 22 do not necessarily have to be provided. For example, if it is not necessary to compensate for the recording capacity, the external recording medium 109 may not be provided.
1, 18, and 22 may be all configured by hardware, or a part may be configured by software.
In the above-described embodiment, the recording / reproducing apparatus for recording a broadcast program has been described. However, the image / audio information recorded in the recording / reproducing apparatus may be image / audio information other than the broadcast program. The broadcast program may be communication such as unicast or multicast via the Internet 109 instead of radio waves. When performing communication via the Internet 109, the recording device 3 includes a communication device 110. The communication device 110 is, for example, a wired local area network (LAN) card or a wireless LAN card.

  In addition, the program in the above embodiment may include video and audio, or may include only video or audio. Further, it may be a teletext program or an electronic book.

FIG. 3 is a diagram illustrating a configuration example of functional blocks of the recording apparatus according to the first embodiment. It is a figure which shows the data structural example of the program additional data 122 of FIG. It is a figure which shows the example of a data structure of the operation history data 123 of FIG. It is a flowchart which shows an example of a process of the scene importance analysis part 131 of FIG. It is a figure which shows the example of a data structure of the program interest level data 124 of FIG. It is an example of the interest degree scoring rule table 141 of FIG. It is a flowchart which shows an example of a process of the program keyword production | generation part 132 of FIG. It is a flowchart which shows the detailed example of a process of step 701 of FIG. It is a figure which shows the data structural example of the program keyword data 125 of FIG. It is a figure which shows the example of a data structure of the user keyword data 143 of FIG. It is a flowchart which shows an example of a process of the user keyword production | generation part 133 of FIG. It is an example of the flowchart of the program importance generation part 134 of FIG. It is a flowchart which shows an example of the process of step 1204 of FIG. 2 is an example of a recorded program list display of the recording apparatus according to the first embodiment. 6 is a flowchart illustrating an example of processing for deleting a program in the recording apparatus according to the first exemplary embodiment. 6 is an example of a warning screen displayed when a program is deleted in the recording apparatus of the first embodiment. 6 is a flowchart illustrating an example of processing for deleting a program after selecting a condition in the recording apparatus according to the first exemplary embodiment. FIG. 6 is a diagram illustrating a configuration example of functional blocks of a recording apparatus according to a second embodiment. 10 is an example of a screen displayed when a program is reserved by the recording apparatus according to the second embodiment. It is an example of the video recording program list display of the recording device of Example 2. 10 is a flowchart illustrating an example of processing for deleting a program in the recording apparatus according to the second embodiment. FIG. 10 is a diagram illustrating a configuration example of functional blocks of a recording apparatus according to a third embodiment. 10 is a flowchart illustrating an example of processing for deleting a program in the recording apparatus according to the third embodiment. An example of data structure of program importance for each program An example of a data configuration in which the data in FIG. 24 is rearranged in descending order of program importance.

Explanation of symbols

101 ... CPU
102 ... Display device 103 ... Input device 104 ... Recording / playback unit 105 ... Program management unit 106 ... Antenna 107 ... Tuner 108 ... Recording medium 109 ... External recording medium

Claims (25)

An input unit for inputting a user instruction for a video / audio signal recorded in the recording medium;
A program management unit for calculating the importance of the video / audio signal;
An output unit for outputting a video / audio signal recorded on the recording medium;
When an instruction to delete the first video / audio signal recorded on the recording medium is input to the input unit, based on the importance of the first video / audio signal calculated by the program management unit. An information processing apparatus comprising: a control unit that controls the output unit to output a warning for deletion of the first video / audio signal. An information processing apparatus according to claim 1,
The program management unit calculates the importance of the first video / audio signal from a word included in the first video / audio signal and a user instruction input to the input unit. An information processing apparatus that calculates a preference level for a word. An information processing apparatus according to claim 2,
The information processing apparatus, wherein the program management unit calculates a preference level for the word based on a user instruction input to the input unit for a scene related to the word in a video / audio signal. An information processing apparatus according to any one of claims 1 to 3,
The control unit, when an instruction to delete the first video / audio signal from the recording unit is input to the input unit, the degree of importance of the first video / audio signal is more important than a predetermined level. An information processing apparatus that controls the output unit to output a warning for the deletion of the first video / audio signal when indicating that there is a certain event. An information processing apparatus according to any one of claims 1 to 3,
The program management unit calculates importance for a plurality of video and audio signals recorded in the recording unit,
When an instruction to delete the first video / audio signal is input to the input unit, the control unit calculates a rank based on the importance of the plurality of video / audio signals, and the first video / audio signal is calculated. An information processing apparatus that controls the output unit to output a warning for deletion of the first video / audio signal when the order of signals satisfies a predetermined condition. An information processing apparatus according to claim 4,
The information processing apparatus that controls the output unit so that the control unit outputs an importance level of the first video / audio signal together with the warning. An information processing apparatus according to claim 5,
The information processing apparatus that controls the output unit so that the control unit outputs a rank of the first video / audio signal together with the warning. An output unit for outputting video and audio information from a recording medium;
An input unit for inputting user instructions;
When an instruction to delete the first video / audio information of the recording medium from the first user is input to the input unit, the output unit separates the first video / audio information from the first user. An information processing apparatus comprising: a control unit that controls to output that the video / audio information is suitable for the preference of the second user. An information processing apparatus according to claim 8,
The input unit receives input of information for distinguishing a user,
The control unit calculates a preference of the second user according to an instruction history for the video / audio information of the second user, and determines whether the first video / audio information is suitable for the preference of the second user. Information processing apparatus to determine. The video / audio information processing apparatus according to claim 9,
The control unit weights a keyword included in a reproduced scene in the history of instructions for the video / audio information of the second user, and weights the keyword included in the first video / audio information. An information processing apparatus that determines that the second keyword is suitable for the preference of the second user when the keyword matches. An input unit for inputting a user instruction for the video and audio signal recorded on the recording medium;
A user authentication unit for authenticating a user who inputs an instruction to the input unit;
About the first video / audio signal recorded on the recording medium based on the user instruction input to the input unit, the words included in the video / audio signal recorded on the recording medium, and the authentication of the user authentication unit A program management unit that calculates a first index for each user;
An output unit for outputting a video / audio signal recorded on a recording medium;
When an instruction to delete the first video / audio signal from the recording medium is input to the input unit, the first index for each user for the first video / audio signal calculated by the program management unit is used. An information processing apparatus comprising: a control unit that controls the output unit so as to output a warning for the deletion of the video / audio signal. An information processing apparatus according to claim 11,
The program management unit obtains a first index for each user for the first video / audio signal from a word included in the first video / audio signal and a user instruction input to the input unit. An information processing apparatus that calculates based on a second index related to a word calculated by the management unit and authentication of the user authentication unit. An information processing apparatus according to claim 11,
The program management unit determines a second index for the word based on a user instruction regarding a scene related to the word in the video / audio signal recorded in the recording unit and authentication by the user authentication unit. Information processing device to calculate. An information processing apparatus according to any one of claims 11 to 13,
The control unit controls the output unit to output a warning for the deletion of the video / audio signal when the first index for the first video / audio signal for at least one user satisfies a predetermined condition. Information processing apparatus. An information processing apparatus according to any one of claims 11 to 13,
The program management unit calculates a first index for each user for each video and audio signal recorded in the recording unit,
When an instruction to delete the first video / audio signal is input to the input unit, the control unit determines whether the video / audio signal for each video / audio signal is based on a first index for each user for each video / audio signal. An information processing apparatus that calculates a rank for each user and controls the output unit to output a warning for deletion of the first video / audio signal when the rank of at least one user satisfies a predetermined condition. The information processing apparatus according to claim 14,
The information processing apparatus that controls the output unit so that the control unit outputs a user name related to a first index higher than the predetermined value together with the warning. The information processing apparatus according to claim 15,
The information processing apparatus that controls the output unit so that the control unit outputs a name of a user related to a first index that satisfies the predetermined condition together with the warning. In response to input of user instructions for video / audio signals recorded on the recording medium,
Calculating a first index for the first video / audio signal recorded on the recording medium based on the user's instruction and a word included in the video / audio signal recorded on the recording medium;
Information processing for outputting a warning for the deletion of the video / audio signal based on the first index for the first video / audio signal when receiving the input of the user who deletes the recorded first video / audio signal Method. The information processing method according to claim 18, comprising:
Information calculated from the first index for the first video / audio signal from the word included in the first video / audio signal and the second index related to the word calculated from the user instruction received. Processing method. An information processing method according to claim 19,
An information processing method for calculating a second index for the word based on a user's instruction regarding a scene related to the word in the video / audio signal recorded on the recording medium. The information processing method according to any one of claims 18 to 20, comprising:
When an instruction to delete the first video / audio signal from the recording unit is received and the first index for the first video / audio signal satisfies a predetermined condition, the first video / audio signal is received. An information processing method for outputting a warning for signal deletion. The information processing method according to any one of claims 18 to 20, comprising:
Calculating a first index for each recorded video and audio signal;
When deleting the first video / audio signal, the rank for each video / audio signal is calculated based on the first index for each video / audio signal, and the rank for the first video / audio signal is predetermined. An information processing method for outputting a warning for deletion of the first video / audio signal when the above condition is satisfied. The information processing method according to claim 18, comprising:
An information processing method for outputting a first index for the first video / audio signal together with the warning. An information processing method according to claim 19,
An information processing method for outputting a rank of the first video / audio signal together with the warning. Based on the user's operation on the video / audio information recorded on the recording medium, the degree of interest indicating the user's interest in a part of the video / audio information is acquired,
Obtaining a degree of preference indicating a user's preference for the keyword from the degree of interest for a part of the video and audio signal recorded on the recording medium and a keyword included in the part;
An information processing method for acquiring importance indicating the importance of the video / audio signal for the user from the user's preference for the acquired keyword and the keyword included in the video / audio signal.

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