JP2007282042A - Apparatus and method for recommending program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a program recommendation apparatus and a program recommendation method that can be handled by a user conveniently by considering that they fit for practical use further when automatically searching a program corresponding to user's taste for recommendation. <P>SOLUTION: There are provided: an analysis means 18c for analyzing the user's taste to program content by sorting the program into a plurality of attributes to set an evaluation value to a plurality of attribute values included in each attribute; a search means 18d for searching the program corresponding to the user's taste from program information based on an analyzed result to create a recommendation program list, based on the searched program; and a control means 18d for displaying recommendation reason by displaying in which attribute value in respective sorted attributes each recommendation program is included to each recommendation program existing in the created recommendation program list. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a program recommendation device and a program recommendation method for automatically searching for a program corresponding to a user's preference from among broadcast programs and recommending viewing to the user. It is related with what is suitable for using.

  As is well known, in recent years, recording capacity has been dramatically improved for information recording media such as HDD (hard disk drive) and DVD (digital versatile disk). By using such a large-capacity information recording medium in a recording / playback apparatus capable of recording recording of broadcast programs, many programs can be reserved and recorded.

  On the other hand, various broadcasting systems such as terrestrial analog broadcasting, terrestrial digital broadcasting, satellite analog broadcasting, and satellite digital broadcasting have been realized. In such an environment, it has become a big issue to consider how easily a user can search for a program that the user wants to view from a huge number of programs scheduled to be broadcast.

  In order to cope with this problem, at present, the user's preference for the program content is grasped based on the viewing history and recording history of the program, and the preference is obtained from the electronic program information such as EPG (electronic program guide) information. A function of automatically searching for a corresponding program and recommending it to a user as a recommended program has been developed and adopted.

  However, the function of automatically searching for and recommending a program corresponding to the user's preference is still in the development stage, and there remains a lot of room for improvement in detail. For example, when a large number of recommended programs are searched, the user needs to search for a program he / she wants to watch from among the many recommended programs, and the search operation is complicated.

In Patent Document 1, when a user instructs display of next broadcast date / time information of a program currently being viewed, the next broadcast date / time is displayed on the screen, and the remote controller displays the next broadcast program displayed on the screen. A configuration is disclosed in which it is possible to set whether to make a viewing reservation or a recording reservation.
JP 2002-171455 A

  Therefore, the present invention has been made in consideration of the above circumstances. When automatically searching for and recommending a program corresponding to the user's preference, it is considered to be more practical and convenient for the user. It is an object of the present invention to provide a program recommendation device and a program recommendation method.

  According to the present invention, there is provided a program recommendation device that classifies a program into a plurality of attributes and adds an evaluation value to a plurality of attribute values included in each attribute, thereby analyzing user's preference for the program content, Based on the analysis result of the means, a program corresponding to the user's preference is searched from program information, a search means for creating a recommended program list based on the searched program, and a recommended program created by the search means Control means for displaying a reason for recommendation by displaying which attribute value is included in each classified attribute for each recommended program in the list.

  In the program recommendation method according to the present invention, a program is classified into a plurality of attributes, and a user's preference for program contents is analyzed by assigning an evaluation value to a plurality of attribute values respectively included in each attribute. A second step of searching a program corresponding to the user's preference from program information based on the analysis result of the first step and creating a recommended program list based on the searched program; A recommendation reason is displayed by displaying which attribute value is included in each classified attribute for each recommended program in the recommended program list created in the second step. These steps are provided.

  According to the above-described invention, when the user's preference for the program content is analyzed and a program corresponding to the user's preference is automatically searched from the program information and recommended, the reason for recommendation is displayed for each recommended program. Since it did in this way, it can consider that it is still more suitable for practical use and can make handling convenient for a user.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an outline of a recording / reproducing apparatus described in this embodiment. The recording / reproducing apparatus shown in FIG. 1 is shown as an apparatus capable of handling both an optical disk such as a DVD and a hard disk as an information recording medium, but the information recording medium may be replaced with, for example, a semiconductor memory. It ’s good.

  In FIG. 1, each block is roughly divided. The main block of the recording unit is shown on the left side, and the main block of the playback unit is shown on the right side.

  The recording / reproducing apparatus shown in FIG. 1 has two types of disk drives, a disk drive unit 11 and an HDD unit 12. First, the disk drive unit 11 rotationally drives an optical disk 13 as a first medium, which is an information recording medium that can construct a video file, and executes reading and writing of information. The disk drive unit 11 includes a rotation control system, a laser drive system, an optical system, and the like for the optical disk 13. Further, the HDD unit 12 drives a hard disk 14 as a second medium.

  The data processor unit 15 can supply recording data to the disk drive unit 11 and the HDD unit 12 and can receive a reproduced signal. The data processor unit 15 handles data of recording or reproduction units, and includes a buffer circuit, a modulation / demodulation circuit, an error correction unit, and the like.

  Further, the recording / reproducing apparatus shown in FIG. 1 mainly includes an encoder section 16 constituting the recording side, a decoder section 17 constituting the reproducing side, and a microcomputer block 18 for controlling the operation of the apparatus main body. The encoder unit 16 includes a transport stream processing unit and a plurality of encoders.

  The encoder unit 16 basically includes an analog-to-digital converter for video and audio that digitizes an input analog video signal or analog audio signal, a video encoder, and an audio encoder. Furthermore, a sub-picture encoder is also included.

  The encoded output from the encoder unit 16 is converted into a predetermined DVD-RAM (random access memory) format by a formatter 20 including a buffer memory 19 and supplied to the data processor unit 15. Note that the packet elementary stream extracted from the transport stream may be recorded directly on the hard disk 14 of the HDD unit 12 from the encoder unit 16.

  An external analog video signal and an external analog audio signal obtained from an A / V (audio / video) input unit 22 can be input to the encoder unit 16 via the switch 21.

  The encoder unit 16 receives signals received from the terrestrial analog tuner 23, the terrestrial digital tuner 24, the satellite BS (broadcasting satellite) / CS (communication satellite) tuner 25, and the satellite analog tuner 26 via the switch 21. It can be selectively input.

  When a plurality of encoders are used in the encoder unit 16, the program received by the terrestrial digital tuner 24 can be recorded by the HDD unit 12 and the program received by the satellite BS / CS tuner 25 can be viewed at the same time. It is.

  The encoder unit 16 can also supply the compressed digital video signal or digital audio signal directly to the formatter 20 when a compressed digital video signal or digital audio signal is directly input. The encoder unit 16 can also directly supply the digital video signal and audio signal that have been converted from analog to digital to the video mixing unit 27 and the audio selector 28.

  In a moving picture experts group (MPEG) video encoder included in the encoder unit 16, a digital video signal is converted into a digital video signal compressed at a variable bit rate based on the MPEG2 or MPEG1 standard.

  The digital audio signal is converted into a digital audio signal compressed at a fixed bit rate based on MPEG or AC (audio compression) -3 standard or a digital audio signal of linear PCM (pulse code modulation).

  When a sub video signal is input from the A / V input unit 22 (for example, a signal from a DVD video player with an independent output terminal of a sub video signal) or a DVD video signal having such a data structure is broadcast, When it is received by a TV (television) tuner unit (not shown), the sub-picture signal in the DVD video signal is encoded (run-length encoded) by the sub-picture encoder to form a sub-picture bitmap.

  The encoded digital video signal, digital audio signal, and sub-picture data are packed by the formatter 20 to become a video pack, an audio pack, and a sub-picture pack, and these are assembled and defined by the DVD-video standard. Format (DVD Video format) or a format defined in the DVD-recording standard (DVD VR format). The formatter 20 also uses the buffer memory 19 during the above conversion process.

  The recording / playback apparatus shown in FIG. 1 uses the data processor unit 15 to send information (packs of video, audio, sub-picture data, etc.) formatted by the formatter 20 and the created management information to the HDD unit 12 or the disk drive. It can be supplied to the unit 11 and recorded on the hard disk 14 or the optical disk 13.

  Further, information recorded on the hard disk 14 or the optical disk 13 can be recorded on the optical disk 13 or the hard disk 14 via the data processor unit 15 and the disk drive unit 11.

  Further, it is possible to perform editing processing such as deleting a part of video objects of a plurality of programs recorded on the hard disk 14 or the optical disk 13 or connecting objects of different programs.

  The microcomputer block 18 includes a central processing unit (CPU) 18a, a ROM (read only memory) in which a control program and the like are written, a RAM for providing a work area necessary for program execution, and various setting information. And a memory unit 18b including a non-volatile memory to be recorded.

  The microcomputer block 18 can be connected to an external network via a network I / F (interface) 29. Thereby, electronic program guide information (DEPG: dynamic electronic program guide) or the like can be taken in from an external server.

  Further, the CPU 18a of the microcomputer block 18 uses the RAM as a work area in accordance with a control program stored in the ROM of the memory unit 18b, and detects a defect location, unrecorded area detection, recording information recording position setting, UDF (universal disk). format) Perform recording, AV address setting, and the like.

  Further, the microcomputer block 18 has various information processing units necessary to control and control each block of the recording / reproducing apparatus. Although not shown, this information processing unit includes a directory detection unit, VMG (video manager) information (whole video management information) creation unit, copy related information detection unit, copy and scrambling information (RDI) processing unit, packet header processing Unit, a sequence header processing unit, an aspect ratio information processing unit, and the like.

  Further, the microcomputer block 18 includes an editing management information control unit that is a management information control unit for executing editing, and a recording management information control unit that is a management information control unit for executing recording. I have.

  Further, the microcomputer block 18 includes a preference analysis control unit 18c, a recommended program search control unit 18d, an impossible keyword setting control unit 18e, a program evaluation control unit 18f, a program information acquisition control unit 18g, a program reservation control unit 18h and a GUI ( graphical user interface) screen controller 18i and the like. The operation of each of the control units 18c to 18i will be described in detail later.

  Among the execution results of the microcomputer block 18, the contents to be notified to the user are displayed on the display unit 30 of the recording / reproducing apparatus or are displayed on the monitor display 31 by OSD (on screen display).

  Further, the microcomputer block 18 has a key operation input unit 32 for giving an operation signal for operating the recording / reproducing apparatus. The key operation input unit 32 corresponds to, for example, operation switches provided on the main body of the recording / reproducing apparatus, a remote controller 33 described later, and the like. Further, it may be a PC (personal computer) connected to the recording / reproducing apparatus using means such as wired communication or wireless communication (including optical communication and infrared communication). In any form, when the user operates the key operation input unit 32, recording processing of the input video / audio signal, playback processing of the recorded content, editing processing on the recorded content, etc. Can be applied.

  The timing at which the microcomputer block 18 controls the disk drive unit 11, HDD unit 12, data processor unit 15, encoder unit 16, and / or decoder unit 17 is based on time data from an STC (system time clock) 34. Can be executed based on. The recording and reproduction operations are normally executed in synchronization with the time clock from the STC 34, but other processing may be executed at a timing independent of the STC 34.

  The decoder unit 17 separates and extracts each pack from a DVD format signal having a pack structure, a memory used when performing pack separation and other signal processing, and main video data (video pack) separated by the separator. Content), a V (video) decoder that decodes the sub-picture data (sub-picture pack content) separated by the separator, and an audio data (audio pack content) that is separated by the separator. And an A (audio) decoder for decoding. In addition, a video processor is provided that appropriately synthesizes the decoded sub-video with the decoded main video, and superimposes a menu, a highlight button, subtitles, and other sub-videos on the main video.

  The output video signal of the decoder unit 17 is input to the video mixing unit 27. In the video mixing unit 27, for example, text data is synthesized. The video mixing unit 27 is also connected to a line that directly takes in signals from the TV tuner unit and the A / V input unit 22. A frame memory unit 35 used as a buffer is connected to the video mixing unit 27. When the output of the video mixing unit 27 is an analog output, it is output to the outside via the I / F 36, and when it is a digital output, it is output to the outside via the digital / analog converter 37.

  The output audio signal of the decoder unit 17 is analog-converted by the digital-analog converter 38 via the audio selector 28 and output to the outside. The audio selector 28 is controlled by a select signal from the microcomputer block 18. Thereby, the audio selector 28 can also directly select an audio signal that has passed through the encoder unit 16 when directly monitoring the digital signal from the TV tuner unit or the A / V input unit 22.

  Note that the formatter 20 of the encoder unit 16 creates each segmentation information during recording and periodically sends it to the CPU 18a of the microcomputer block 18 [information at the time of GOP (group of picture) head interrupt, etc.]. The segmentation information includes the number of VOBU (video object unit) packs, the end address of an I (intra) picture from the beginning of the VOBU, the playback time of the VOBU, and the like.

  At the same time, information from an aspect information processing unit (not shown) is sent to the CPU 18a at the start of recording, and the CPU 18a creates VOB (video object) stream information (STI: stream information). Here, the STI stores resolution data, aspect data, and the like, and at the time of reproduction, each decoder unit is initialized based on this information.

  In this recording / reproducing apparatus, one video file is recorded on a DVD. Further, in order to continue playback without interruption while accessing (seeking) data, a minimum continuous information unit (size) is determined. This unit is called CDA (contiguous data area). The CDA size is a multiple of an ECC (error correcting code) block (16 sectors), and the file system performs recording in units of CDA.

  The data processor unit 15 receives data in VOBU units from the formatter 20 of the encoder unit 16 and supplies data in CDA units to the disk drive unit 11 or the HDD unit 12.

  Further, the CPU 18a of the microcomputer block 18 creates management information necessary for reproducing the recorded data. When the CPU 18a recognizes a data recording end command, it sends the created management information to the data processor unit 15. Thereby, management information is recorded on the optical disk 13 or the hard disk 14. For this reason, when encoding is performed, the CPU 18a of the microcomputer block 18 receives data unit information (such as segmentation information) from the encoder unit 16.

  Further, the CPU 18a of the microcomputer block 18 recognizes the management information (file system) read from the optical disk 13 and the hard disk 14 at the start of recording, and recognizes the unrecorded area of each disk, thereby causing the data processor unit 15 to operate. The data recording area is set on the disc.

  FIG. 2 shows an overview of the remote controller 33. The main operation keys will be described. Reference numeral 33a is a power key for turning on / off the power, and reference numeral 33b is a top menu key for displaying a top menu screen. The menu key 33c is an operation key operated when displaying a menu recorded on an information recording medium such as a DVD. Reference numeral 33d is a determination key, and reference numerals 33e, 33f, 33g, and 33h are cursor operation keys for moving the cursor displayed on the screen up, down, right, and left, respectively.

  Next, a characteristic configuration and operation regarding the program recommendation function in the recording / reproducing apparatus will be described. That is, the preference analysis control unit 18c of the microcomputer block 18 analyzes the user's preference for the program content. This analysis is performed by collecting statistics by attribute for various programs that the user has viewed, recorded, reserved for viewing, reserved for recording, replayed, deleted for recording, canceled, copied, etc. in the past. It is.

  That is, the preference analysis control unit 18c categorizes programs according to attributes such as genre, title, performer, etc., as shown in FIG. 3, and includes each attribute based on the user's action history for the program. The user's preference is analyzed by increasing or decreasing the evaluation values attached to the plurality of attribute values.

  For example, when a recording reservation is made for one variety program, the attribute is a genre and the attribute value is incremented by one for variety and other evaluation values. On the other hand, when a recorded variety program is deleted almost without watching one recorded variety program, the attribute is the genre and the attribute value is -1 for the variety and other evaluation values. Statistics are taken in the same way for titles and performers.

  Further, the recommended program search control unit 18d of the microcomputer block 18 automatically selects a program corresponding to the user's preference from the electronic program information based on the user's preference for the program content obtained as described above. Search. The searched program is displayed as a recommended program list.

  In order to display the recommended program list, the user operates the top menu key 33 b of the remote controller 33. When the top menu key 33 b of the remote controller 33 is operated, a main menu screen as shown in FIG. 4 is displayed on the monitor display 31 based on the control of the GUI screen control unit 18 i.

  The main menu screen shown in FIG. 4 includes “program guide”, “recording reservation list”, “My genre program list”, “recommended service”, “favorite program list”, “series program list”, “program search”, Various items such as “person name search”, “notice”, “library”, “keyword setting”, “program navigation setting” are displayed.

  When the cursor operation keys 33e, 33f, 33g, and 33h of the remote controller 33 are operated on the main menu screen shown in FIG. 4 to select the item “recommended service” and the enter key 33d is operated, as shown in FIG. A list of recommended programs (recommended service program list) searched based on the user's preference is displayed.

  In the recommended program list, the title, broadcasting method, broadcasting channel, and broadcasting date and time are described for each program. In the recommended program list, an item of “Recommendation Reason” is displayed for each program.

  Then, the user operates the cursor operation keys 33e, 33f, 33g, and 33h of the remote controller 33, and the cursor K (see FIG. 5) is displayed on the item “Recommended Reason” corresponding to any program (for example, “I love you”). If the enter key 33d is operated, the reason for recommending the program is displayed on the screen as shown in FIG.

  This recommendation reason is displayed as a bar graph indicating the result of preference analysis by the preference analysis control unit 18c, that is, the evaluation value of each attribute value aggregated for each attribute (genre, title, performer). Which attribute value is included in the attribute is displayed by changing the evaluation value and color of other attribute values (indicated by hatching in FIG. 6).

  Thus, for example, in the program “I love you”, the user understands that the attribute is recommended because it corresponds to the “domestic drama” that has the third highest attribute value according to the user's preference in the genre. The

  Further, it is understood by the user that the program “I love you” is recommended because the attribute corresponds to the attribute value that is the highest in the user's preference in the title. Similarly, it is understood by the user that the program “I love you” is recommended because the attribute corresponds to the second to fourth highest attribute value in the user's preference among performers.

  As described above, when the user's preference for the program content is analyzed, and a program corresponding to the user's preference is automatically searched from the electronic program information and recommended, the reason for recommendation is displayed for each recommended program. Since it was made possible, the user can understand why the program was recommended.

  For this reason, for example, even when a large number of programs are recommended, by considering the reasons for recommending each program, the user can easily search for the program that the user wants to watch, and the practical use is further improved. Can be facilitated, and handling for the user can be made convenient.

  Further, when the reason for recommending a program is displayed, the analysis result of the preference for the user's program contents is displayed in a graph, so that the user can grasp his / her preference.

  Next, the impossible keyword setting control unit 18e of the microcomputer block 18 enables the user to register a plurality of arbitrary impossible keywords. Then, the unacceptable keyword setting control unit 18e excludes a program including at least one registered unacceptable keyword in the electronic program information from the recommendation target by the recommended program search control unit 18d and reserves (viewing reservation and recording) (Reservation) and recording are also restricted.

  In order to register the disabled keyword, the user displays the main menu screen shown in FIG. 4 and operates the cursor operation keys 33e, 33f, 33g, and 33h of the remote controller 33, and sets the “Keyword setting” item. Select and operate the enter key 33d.

  Then, a selection screen for selecting either a keyword setting screen for registering a keyword when a user searches a keyword for a program from electronic program information or an impossible keyword setting screen for registering an impossible keyword is displayed. Therefore, by selecting the latter, an impossible keyword setting screen as shown in FIG. 7 is displayed.

  On this disabled keyword setting screen, a plurality (six in the illustrated example) of disabled keywords can be registered. Then, the non-permitted keyword setting control unit 18e not only removes the registered or non-registered keyword from the viewing / recording target and the recording target, but also removes it from the target of the recommended program. Is also restricted.

  FIG. 8 shows a flowchart summarizing the operation of such an impossible keyword setting control unit 18e. That is, when the process is started (step S8a), the impossible keyword setting control unit 18e determines whether or not the impossible keyword is already registered in step S8b.

  If it is determined that an incapable keyword is registered (YES), in step S8c, the ineffective keyword setting control unit 18e includes the registered ineffective keyword in the electronic program information of the currently targeted program p. Determine whether or not.

  If it is determined that an additional keyword is included (YES), the impossibility keyword setting control unit 18e sets the program p to impossibility of recommendation, recording impossibility, reservation impossibility in step S8d, that is, recommendation, The setting is made so as not to be recorded and reserved, and the process ends (step S8f).

  Further, when it is determined in step S8b that no impossible keyword is registered (NO), or when it is determined that no additional keyword is included in step S8c (NO), the impossible keyword setting control unit 18e. In step S8e, the program p is set to be recommendable, recordable, and reservationable, that is, set to be recommended, recorded, and reserved, and the process ends (step S8f).

  As described above, by making it possible to set a non-keyword for excluding a program from being recommended, recorded, or reserved, for example, in a home, it is possible to manage a program with many violent scenes from being viewed by children. It can be done easily.

  Next, the program evaluation control unit 18f of the microcomputer block 18 functions to allow the user to input an evaluation of the program when the user has watched one program to the end. And the program evaluation control part 18f is functioning so that the evaluation result may be reflected in the user's preference analysis by the preference analysis control part 18c.

  That is, the program evaluation control unit 18f immediately after one program is played to the end and stopped, that is, immediately after the end title of the program is played and automatically stopped or stopped by the user, FIG. Automatically displays a program evaluation screen as shown in FIG. On this program evaluation screen, five items of “very good”, “good”, “normal”, “not so good”, and “not good” are displayed, and the user can select any of the items with the remote controller 33. A five-level evaluation is made so that it can be selected.

  FIG. 10 is a flowchart summarizing operations for causing the program evaluation control unit 18f to reflect user evaluation on the program evaluation screen in user preference analysis by the preference analysis control unit 18c. That is, when the process is started (step S10a), the program evaluation control unit 18f determines whether or not the user has been evaluated on the program evaluation screen in step S10b. (NO), the process ends (S10g).

  If it is determined that the user has been evaluated on the program evaluation screen (YES), the program evaluation control unit 18f determines that the user is “very good” or “good” for the viewed program p in step S10c. + Determine whether or not the evaluation has been made. If it is determined that the evaluation is + (YES), the program evaluation control unit 18f increases the evaluation value of the attribute value in each attribute (genre, title, performer, etc.) including the program p in step S10d. Then, the process ends (S10g).

  On the other hand, if it is determined in step S10c that the + evaluation has not been made (NO), the program evaluation control unit 18f determines in step S10e that the user “not so good” or “not good” for the program p viewed. -It is discriminated whether or not the evaluation has been made. If it is determined that the evaluation has been made (YES), the program evaluation control unit 18f lowers the evaluation value of the attribute value in each attribute (genre, title, performer, etc.) including the program p in step S10f. Then, the process ends (S10g).

  If it is determined that the evaluation has not been made in step S10e (NO), the program evaluation control unit 18f determines that “normal” is evaluated, and performs the process without changing the preference analysis result. Is finished (S10g).

  As described above, it is possible to perform a more accurate preference analysis corresponding to the actual situation of the user by allowing the user to input an evaluation on the program viewed to the end and reflecting the evaluation result in the preference analysis. It becomes possible.

  Note that the timing for displaying the program evaluation screen may be immediately after the program is played to the end, that is, immediately after the end title of the program is played, but is not limited to this, and the main program is finished playing. This includes the case where playback is stopped at almost the end of the program, such as immediately after the end of the program, or when the user stops playback within a range from the end of the program to a predetermined time (for example, 5 minutes).

  Next, when the optical disk 13 is reproduced, the program information acquisition control unit 18g of the microcomputer block 18 provides information (performers, keywords, directors, etc.) regarding the reproduction contents (movies) of the optical disk 13. Obtain automatically from a dedicated server on the network. The program information acquisition control unit 18g functions to reflect the acquired information in the user preference analysis by the preference analysis control unit 18c.

  FIG. 11 summarizes operations for acquiring information related to the contents of the optical disk 13 from the dedicated server based on the optical disk 13 reproduced by the program information acquisition control unit 18g and reflecting the information in the user preference analysis by the preference analysis control unit 18c. The flowchart is shown.

  That is, the process is started (step S11a), and when the optical disc 13 is mounted on the disc drive unit 11 and playback is started in step S11b, the program information acquisition control unit 18g, in step S11c, Then, it is determined whether or not it is connected to the network, and if it is determined that it is not connected to the network (NO), the process is terminated (step S11i).

  On the other hand, if it is determined that it is connected to the network (YES), the program information acquisition control unit 18g transmits the identifier of the optical disc 13 being reproduced to a dedicated server on the network in step S11d.

  Then, in step S11e, the dedicated server searches for information related to the contents of the optical disc 13 based on the received identifier. In step S11f, the dedicated server converts the searched information into a format that can be received by the recording / reproducing apparatus. In S11g, the data is transmitted to the recording / reproducing apparatus via the network.

  Thereby, the program information acquisition control unit 18g reflects the information acquired from the dedicated server in the user preference analysis by the preference analysis control unit 18c in step S11h, and ends the processing (step S11i).

  Note that the information acquired from the dedicated server is reflected in the preference analysis, as in step S10d of FIG. 10, the evaluation value of the attribute value in each attribute (genre, title, performer, etc.) including the contents of the optical disc 13 is used. It is realized by raising.

  As described above, not only the user's action history such as recording / playback related to a broadcast program, but also information related to the content is automatically acquired from a dedicated server when a commercially available optical disc 13 recorded with a movie or the like is played back. In this respect, more accurate preference analysis corresponding to the actual situation of the user can be performed.

  Next, when the program is recorded on the optical disk 13 or the hard disk 14, the microcomputer block 18 stores the recording history in the memory unit 18b. As the recording history, for example, the title of the recorded program, the recording date and time, the recording medium, the recording conditions, and the like are stored in the recording order.

  FIG. 12 shows a flowchart summarizing the operation of saving the recording history in the memory unit 18b. The number of recording histories that can be stored in the memory unit 18b is x. That is, when the process is started (step S12a) and the current target program p is recorded in step S12b, the microcomputer block 18 counts the number of recording histories stored in the memory unit 18b in step S12c. Whether or not is less than x.

  If it is determined that it is less than x (YES), the microcomputer block 18 additionally records the recording history related to the program p in the memory unit 18b in step S12e, and ends the processing (step S12f).

  If it is determined in step S12c that the number of record histories stored in the memory unit 18b is x (NO), the microcomputer block 18 records the records stored in the memory unit 18b in step S12d. One of the oldest histories is deleted, and the process proceeds to step S12e.

  Here, the recommended program search control unit 18d of the microcomputer block 18 refers to the recording history created as described above, and removes the program that has already been recorded from the recommended target, that is, from the recommended program list. It is controlled to be deleted.

  FIG. 13 shows a flowchart summarizing the operation of removing the program already recorded by the recommended program search control unit 18d from the recommendation target. That is, when the process is started (step S13a), the recommended program search control unit 18d acquires the number n of programs described in the recommended program list in step S13b.

  Then, in step S13c, the recommended program search control unit 18d determines whether or not the number n of recommended programs exceeds 0. If it is determined that the number is 0 (NO), the process ends (step S13g). .

  If it is determined in step S13c that the number n of recommended programs exceeds 0 (YES), the recommended program search control unit 18d acquires the predetermined program p from the recommended program list in step S13d, and recommends it. Decrease the program number n by -1.

  Then, in step S13e, the recommended program search control unit 18d determines whether or not the program p exists in the recording history. If it is determined that the program p does not exist (NO), the recommended program search control unit 18d proceeds to the process of step S13c and exists. If determined (YES), in step S13f, the program p is deleted from the recommended program list, and the process proceeds to step S13c.

  As described above, by removing the program that the user has already reserved for recording or the recorded program from the recommendation target, the program that has already been reserved for recording or the program that has been recorded by the user is not displayed in the program recommendation list. Can be promoted for practical use and can be handled conveniently for the user.

  In addition to deleting a program existing in the recording history from the recommended program list, a program whose recording reservation has already been set by the program reservation control unit 18h of the microcomputer block 18 is also deleted from the recommended program list. This makes it even more convenient for the user.

  The microcomputer block 18 stores the viewing history in the memory unit 18b when a program is viewed. As the viewing history, for example, the title of the viewed program, the viewing date and time, the viewed medium, and the like are stored in the viewing order.

  Then, the recommended program search control unit 18d of the microcomputer block 18 controls the program that has already been viewed with reference to the viewing history to be excluded from the recommendation target.

  Thus, by removing the program that the user has already viewed from the recommendation target, the program that the user has already viewed is not displayed in the program recommendation list, and further practical application can be promoted. Can be handled conveniently.

  Note that the present invention is not limited to the above-described embodiments as they are, and can be embodied by variously modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements according to different embodiments may be appropriately combined.

1 is a block diagram illustrating a recording / reproducing apparatus according to an embodiment of the present invention. The figure shown in order to demonstrate the remote controller which controls the recording / reproducing apparatus in the embodiment. The figure shown in order to demonstrate an example of the preference analysis with respect to the user's program content which the recording / reproducing apparatus in the embodiment performs. The figure shown in order to demonstrate an example of the main menu screen displayed by the recording / reproducing apparatus in the embodiment. The figure shown in order to demonstrate an example of the recommended program list displayed by the recording / reproducing apparatus in the embodiment. The figure shown in order to demonstrate an example of the recommendation reason of the program displayed by the recording / reproducing apparatus in the embodiment. The figure shown in order to demonstrate an example of the impossible keyword setting screen displayed by the recording / reproducing apparatus in the embodiment. The flowchart shown in order to demonstrate an example of the processing operation using the impossible keyword which the recording / reproducing apparatus in the same embodiment performs. The figure shown in order to demonstrate an example of the program evaluation screen displayed by the recording / reproducing apparatus in the embodiment. The flowchart shown in order to demonstrate an example of the processing operation using the program evaluation result which the recording / reproducing apparatus in the same embodiment performs. The flowchart shown in order to demonstrate an example of the processing operation using the network which the recording / reproducing apparatus in the embodiment performs. The flowchart shown in order to demonstrate an example of the processing operation which produces the recording history which the recording / reproducing apparatus in the embodiment performs. The flowchart shown in order to demonstrate an example of the processing operation which removes from the recommendation object the program which exists in the recording history which the recording / reproducing apparatus in the same embodiment performs.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Disk drive part, 12 ... HDD part, 13 ... Optical disk, 14 ... Hard disk, 15 ... Data processor part, 16 ... Encoder part, 17 ... Decoder part, 18 ... Microcomputer block, 19 ... Buffer memory, 20 ... Formatter, DESCRIPTION OF SYMBOLS 21 ... Switch, 22 ... A / V input part, 23 ... Terrestrial analog tuner, 24 ... Terrestrial digital tuner, 25 ... Satellite BS / CS tuner, 26 ... Satellite analog tuner, 27 ... Video mixing part, 28 ... Audio selector 29 ... Network I / F, 30 ... Display, 31 ... Monitor display, 32 ... Key operation input, 33 ... Remote controller, 34 ... STC, 35 ... Frame memory, 36 ... I / F, 37, 38 ... Digital analog converter.

Claims (10)

Analyzing means for classifying a program into a plurality of attributes and analyzing a user's preference for program contents by attaching an evaluation value to a plurality of attribute values included in each attribute,
Search means for searching a program corresponding to the user's preference from program information based on the analysis result of the analysis means, and creating a recommended program list based on the searched program;
Control means for displaying the reason for recommendation by displaying which attribute value is included in each classified attribute for each recommended program in the recommended program list created by the search means; A program recommendation device comprising: The control means includes
The analysis results of the analysis means are displayed in a graph with the evaluation values attached to the plurality of attribute values included for each attribute for each of the plurality of classified attributes,
2. The graph of evaluation values corresponding to one recommended program selected from the recommended program list is displayed in a display form different from the graphs of other evaluation values. Program recommendation device. A setting means for registering non-permitted keywords;
2. The program recommending apparatus according to claim 1, further comprising a restricting unit that excludes a program that includes an unacceptable keyword registered by the setting unit in program information from a target of reservation, recording, and recommendation. An input means for inputting an evaluation of the program when the program is stopped at almost the end of the program;
The program recommendation apparatus according to claim 1, further comprising a reflection unit that reflects the evaluation input by the input unit in an analysis result by the analysis unit. An analysis means for analyzing a user's preference for program content;
Search means for searching a program corresponding to the user's preference from program information based on the analysis result of the analysis means, and creating a recommended program list based on the searched program;
Mounting means for detachably mounting the recording medium;
Reproduction means for reproducing the recording medium attached to the attachment means;
Acquisition means for transmitting the identification information of the recording medium attached to the attachment means to a network, and acquiring information relating to the recording contents of the recording medium from a dedicated server;
A program recommendation device comprising: reflection means for reflecting the information acquired by the acquisition means in the analysis result by the analysis means. An analysis means for analyzing a user's preference for program content;
Search means for searching for program corresponding to user's preference from program information based on the analysis result of the analysis means, and creating a recommended program list based on the searched program;
Recording means for storing a recording history relating to the recorded program;
A program recommendation apparatus comprising: a restriction unit that excludes a program existing in a recording history stored in the recording unit from a recommendation target. An analysis means for analyzing a user's preference for program content;
Search means for searching a program corresponding to the user's preference from program information based on the analysis result of the analysis means, and creating a recommended program list based on the searched program;
A recording means for storing a viewing history relating to the viewed program;
A program recommendation apparatus comprising: a restriction unit that excludes a program existing in the viewing history stored in the recording unit from a recommendation target. A first step of classifying a program into a plurality of attributes and analyzing a user's preference for program contents by attaching evaluation values to a plurality of attribute values included in each attribute;
A second step of searching a program corresponding to the user's preference from program information based on the analysis result of the first step, and creating a recommended program list based on the searched program;
The recommendation reason is displayed by displaying which attribute value is included in each classified attribute for each recommended program in the recommended program list created in the second step. 3. A program recommendation method comprising the steps of 3. A fourth step for registering the impossible keyword;
9. The program recommendation method according to claim 8, further comprising: a fifth step of removing a program including the unacceptable keyword registered in the fourth step from the target of reservation, recording and recommendation. A sixth step for inputting an evaluation of the program when the program is stopped at almost the end of the program;
9. The program recommendation method according to claim 8, further comprising a seventh step of reflecting the evaluation input in the sixth step in the analysis result of the first step.

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