JP2011160148A - Digital-broadcast receiver and recorded-program control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital-broadcast receiver that allows a user to simply set the prohibition of deletion of a recorded program which a user has much interest in, and to provide a recorded-program control method. <P>SOLUTION: With the prohibition of deletion of a recorded program in a recording list selected by a user as a trigger, prohibition of deletion of the recorded program is set by a deletion prohibition setting part. A program classification of the recorded program is determined from program information of the recorded program whose deletion is prohibited by a program classification determination part; characteristics information is extracted from the program information by an extraction, part on the basis of the program classification; and the deletion prohibition setting part sets the prohibition of deletion of a recorded program which has the same characteristic information as that of the recorded program whose deletion is prohibited and is different from the recorded program whose deletion is prohibited. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a digital broadcast receiver for transmitting information via a broadcast wave and a network, and a method for controlling a recorded program.

  In recent years, terrestrial digital broadcasting and BS / CS digital broadcasting have been fully operated, and an environment in which many programs can be viewed with high image quality and high sound quality has been established. Digital broadcasting is equipped with an electronic program guide (EPG) system, and the program guide for the day or one week ahead is displayed just by pressing a button on the remote controller of the receiver. Performers can easily display program contents, search for information they want to know, program viewing reservations and recording reservations.

  Digital broadcast recording requires a large amount of storage capacity, and the number of recorded programs is very large due to the automatic recording function such as the series reservation function, so HDD (Hard Disk Drive) or SSD (Solid State Drive) etc. There may be a situation where the recording capacity of the recording device is exhausted.

  For this reason, some televisions or STBs (Set Top Boxes) having a recording function have a function of automatically deleting recorded programs. In addition, some programs are provided with a deletion prohibition designation function for an arbitrary program title so that a recorded program to be kept is not deleted by the automatic deletion function. In addition, when there are too many recorded programs, it is cumbersome to perform a deletion prohibition operation on everything that the user wants to leave, so a function that automatically adds a deletion prohibition setting during a recording reservation operation is provided. There is also.

  Scheduled recording setting means that can be set by the number of recordings of the same program after the specified number of days, hours, or date and time after recording, or for a continuous program broadcast every day or weekly Necessary for erasable period management means for changing the erasability setting of the recorded program to erasable, vacant area management means for managing the vacant area of the recording medium, vacant area of the recording medium and reserved recording Erasure target program selection means for selecting a program to be erased from recorded programs that can be erased from a recordable area, and recording control for erasing the erasure target program and securing a free area when there is not enough free space A program recording / reproducing apparatus having a means has been devised (for example, see Patent Document 1).

JP 2007-235904 A

  As described above, the number of recorded programs increases significantly due to the increase in the number of digital broadcasting channels and the automatic recording function such as the series reservation function. Therefore, it is complicated to perform the deletion prohibition operation on all the recorded programs that the user wants to leave. It is. Although it is possible to automatically add a deletion prohibition setting during a recording reservation operation, it is not clear what programs will be recorded in automatic recording using keywords, etc., so the deletion prohibition operation will be performed unnecessarily. In such a case, the remaining recording capacity of the recording apparatus may be exhausted quickly.

  As for series programs, there may be cases where it is desired to prohibit deletion after a certain number of recorded programs have accumulated. It is desired to be able to flexibly and easily set the prohibition of deletion of recorded programs that are of interest to the user.

  The present invention has been made in view of the circumstances as described above, and a digital broadcast receiver and a recorded program that allow a user to easily set prohibition of deletion of a recorded program that is highly interested by the user. An object is to provide a control method.

  In order to achieve the above object, a digital broadcast receiver according to the present invention includes a deletion prohibition setting unit for setting prohibition of deletion of a recorded program, and a program classification for determining a program classification of the recorded program from program information of the recorded program A determination unit; and an extraction unit that extracts characteristic information from the program information based on the program classification, wherein the deletion prohibition setting unit is a recorded program different from the recorded program having the same characteristic information as the characteristic information It is characterized in that prohibition of deletion is set.

  In the recorded program control method of the recorded program of the present invention, the prohibition of deletion of the recorded program is set, the program classification of the recorded program is determined from the program information of the recorded program, and the program is determined based on the program classification. Characteristic information is extracted from the information, and prohibition of deletion of a recorded program different from the recorded program having the same characteristic information as the characteristic information is set.

  According to the present invention, it is possible for a user to easily set prohibition of deletion of a recorded program that is highly interested by the user.

The block diagram which shows the structure of the Example of a digital broadcast receiver. The block diagram which showed the structure of the video recording program control part. The general-view figure which showed the Example of remote control. The figure which showed the state by which the EPG screen was displayed on the screen. The figure which showed the example of the recording list screen. The flowchart which showed the operation | movement procedure of the automatic deletion prohibition setting process. The figure which showed the example of a display of the screen at the time of designating deletion prohibition of a recorded program. The figure which showed the example of the definition of the process classification of the video recording program in an automatic deletion prohibition setting process. The flowchart which showed the operation | movement procedure of the automatic deletion determination process. The figure which showed the example of the deletion schedule confirmation window. The figure which showed the example of the deletion schedule notification window.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of a digital broadcast receiver 1 according to the present invention. The antenna 2 is an antenna for terrestrial digital broadcast or satellite digital broadcast for receiving broadcast radio waves transmitted from the broadcast station 31. The tuner 3 selects a broadcast signal of a desired channel from broadcast signals of terrestrial digital broadcast or satellite digital broadcast, demodulates the received broadcast radio video signal and audio signal, and converts them into an MPEG2 transport stream. The tuner 3 is composed of a plurality of tuner units, and can receive a plurality of broadcasts at the same time.

  The demultiplexer 4 separates multiplexed signals, and detects and separates data broadcast packets such as video signals, audio signals, and program information from the transport stream sent from the tuner 3. . The demultiplexer 4 transmits the separated signal to the decoding processing unit 5.

  The decoding processing unit 5 has functions of a program information decoding unit 6 and a video / audio decoding unit 7. The program information decoding unit 6 sections the data transmitted from the demultiplexer 4 and decodes the program information data. The video / audio decoding unit 7 decodes video data and audio data by performing video ES (Elementary Stream) for video PES (Packetized Elementary Stream) and audio ES for audio PES.

  The superimposing processing unit 8 superimposes the video data from the video / audio decoding unit 7 and the video data by plane management of window drawing by data broadcasting or GUI (Graphical User Interface) transferred via the bus. To the video display unit 9.

  The video processing unit 9 converts the format (number of pixels, frame frequency, scanning method) that can be displayed on the display device 10 or arbitrarily adjusts the display color, and outputs it to the display device 10 to display the video on the screen. 10a is displayed. The audio processing unit 11 converts the digital audio data input from the video / audio decoding unit 7 into an analog audio signal that can be reproduced by the speaker 12, and then outputs the analog audio signal to the speaker 12 to reproduce the audio.

  In the digital broadcast receiver 1, all operations including the above-described reception operation are comprehensively controlled by the control unit 14. The control unit 14 is equipped with an MPU (Micro Processing Unit) 15 and controls each component connected via the bus 13.

  A RAM (Random Access Memory) 17 is a read / write memory that stores various data necessary for data processing of the control unit 14, and operates as a buffer memory that stores video data and the like. A ROM (Read Only Memory) 18 is a read only memory and stores a control program executed by the control unit 14.

  The flash memory 19 is a non-volatile semiconductor memory that can be rewritten and does not lose data even when the power is turned off. The flash memory 19 has a function of storing recorded program information, recording reservation information, recorded program deletion prohibition information, and the like.

  The operation reception unit 20 receives an operation signal transmitted from the operation device 21 and transfers the operation signal to the control unit 14. The operation device 21 is, for example, a remote controller using a wireless communication such as infrared or Bluetooth, a wired or wireless keyboard, and the like, and sends an operation signal. The operation receiving unit 20 receives an operation signal from the remote controller, the keyboard, or the like.

  The digital broadcast receiver 1 is connected to a network 32 such as the Internet via a transmission / reception unit 22. As a result, the digital broadcast receiver 1 can perform information transmission via the transmission / reception unit 22 with devices such as the server 33 on the network 32.

  The recording device 23 is a recording device including a hard disk drive (HDD) or a solid state drive (SSD). The recording device 23 is connected to the data bus 13, but the recording device 23 is equipped with an interface for recording and reproducing information, and through this interface, a broadcast program or the like is recorded on the HDD or SSD, Play again. The recording device 23 may be outside the digital broadcast receiver 1. In this case, the digital broadcast receiver 1 is connected to the recording device 23 via an interface such as USB (Universal Serial Bus), IEEE 1394 (Institute of Electrical and Electronic Engineers 1394), or eSATA (external Serial ATA (AT Attachment)). Record and replay broadcast programs.

  The control unit 14 has functions of a recorded program control unit 24 and a GUI control unit 25. The GUI control unit 25 generates a GUI (Graphical User Interface) displayed on the screen 10 a of the display device 10. The generated graphics signal is transmitted to the superimposition processing unit 8 via the bus 13.

  FIG. 2 is a block diagram illustrating a configuration of the recorded program control unit 24 included in the control unit 14. The function of the recorded program control unit 24 is an application executed by the MPU 15 of the control unit 14 and is normally stored in the ROM 18 and is executed by the MPU 15 when used to control the recording of the program and the processing of the recorded program. Control. The recorded program control unit 24 includes a recording management unit 26, a recording reservation unit 27, a deletion prohibition setting unit 28, a program classification determination unit 29, and a characteristic information extraction unit 30 as functional configurations.

  The recording management unit 26 performs processing such as recording of a reserved program, recording of a program being viewed, generation of a recorded program list and recorded program deletion list, playback, deletion, and editing of a recorded program.

  The recording reservation unit 27 manages reservation information set based on a user request. The user can select a program using the remote control and make a recording or recording reservation while viewing the program guide based on the EPG data on the screen 10a. In addition, automatic recording reservations such as keyword reservations and series reservations can be made, but the recording reservation unit 27 manages such reservation information.

  The deletion prohibition setting unit 28 sets prohibition of deletion of recorded programs based on a user's request, and manages the deletion prohibition information. Further, the deletion prohibition setting unit 28 sets prohibition (including quasi-deletion prohibition) of another recorded program having the same characteristic information as the characteristic information extracted by the extraction unit 30.

  The program classification determination unit 29 determines the program classification of the recorded program from the program information of the recorded program. For example, in the terrestrial digital broadcasting standard, programs are “news / report”, “sports”, “information / wide show”, “drama”, “music”, “variety”, “movie”, “anime / special effects”. , “Documentary / Liberal Arts”, “Theater / Performance”, “Hobbies / Education”, “Welfare”, “Other”. This can be confirmed from the program information, and the program classification can be determined.

  The characteristic information extraction unit 30 extracts characteristic information from the program information based on the program classification. The characteristic information is information such as broadcast date / time information, broadcast station information, title information, performer information, and keyword information included in the program information.

  FIG. 3 is an overview diagram showing an embodiment of the remote controller 40. The remote controller 40 sends an operation signal to the operation receiving unit 20 of the digital broadcast receiver 1 using wireless communication such as infrared or Bluetooth. The power button 41 turns on or off the digital broadcast receiver 1. Specifically, this button is a button for bringing the digital broadcast receiver 1 from the standby state to the operation state, or from the operation state to the standby state.

  The channel selection button 42 is a button numbered 1 to 12 for directly selecting a channel number. The channel advance button 43 is a button for selecting a channel number by forward or reverse feeding, and is used when a channel is selected in the same manner as the channel selection button 42. The volume adjustment button 44 is a button for adjusting the volume when viewing a program.

  The cursor button 45 is a button for moving the cursor in various information windows on the GUI screen displayed on the screen of the display device 11 and moving selection buttons for various items. The left cursor button 45a is a button used to move the cursor to the left. The right cursor button 45b, the upward cursor button 45c, and the downward cursor button 45d are used to move the cursor in the right direction, the upward direction, and the downward direction, respectively. The decision button 46 is used when executing the position on the screen or the button on the screen moved by the cursor button.

  The program guide button 47 is a dedicated operation button that is operated when the program guide (EPG screen) is displayed on the screen 10a. The link button 48 is a button that is activated when performing an interlocking operation with an external recording device or the like connected to the digital broadcast receiver 1. The recording button 49 is a button used when recording a program being viewed. The recording list button 50 is a button operated when displaying a recording list on the screen. The end button 51 is a button operated when ending a series of operations. The recording device operation button 52 is a button for playback, stop, pause, fast forward playback, fast reverse playback, next program skip, and return to the beginning when viewing a recorded program.

  FIG. 4 is a diagram showing a state in which the EPG screen 60 is displayed on the screen 10a. For example, when the user presses the program guide button 47 of the remote controller 40, the control unit 14 displays the EPG screen 60 on the screen 10a. The user can select a program, display detailed information, and make a recording reservation using the remote controller 40 while viewing the program guide on the screen 10a.

  The display mode of the program table by EPG data differs depending on the broadcast receiver manufacturer and the broadcast receiver model, but in the digital broadcast receiver 1, the channel axis in the horizontal direction as in the TV program column in the above-mentioned newspapers, It is displayed as a time axis in the vertical direction so that programs broadcast after the current time are arranged. When a program is selected, detailed information such as the genre of the program, performers and program contents is displayed in addition to the program title and broadcast date and time of the program.

  EPG data is packetized, multiplexed and transmitted in the same manner as video / audio. Program information data is included in the EIT (Event Information Table) of SI (Service Information, program arrangement information), and the control unit 14 analyzes the information output from the decoding processing unit 5 to generate a program table. To do. The generated program guide is transmitted to the display device 10 via the GUI control unit 25, the superimposition processing unit 8, and the video processing unit 9.

  FIG. 4 shows a state where the TV 61 channel program 61 (hatched portion) from 18:30 is selected. For example, when the determination button 46 of the remote controller 40 is pressed in a state where the program 32 is selected, a window for prompting the user to display simple program information and reserve viewing or recording is opened. The user can select an option in the window by operating the cursor button 45 of the remote controller 40.

  FIG. 5 is a diagram showing an example of the recording list screen 62. The recording list screen 62 can be displayed on the screen 10a when the recording list button 50 of the remote controller 40 is pressed, for example. It is also possible to follow by pressing the link button 40. The recording list screen 62 includes a recording list 63 of recorded programs recorded in the recording device 23, a scroll display unit 64, a thumbnail screen 65, and a program information display screen 66.

  In the recording list 63, program titles are displayed in a list form. A program that is not displayed in the display area can be displayed by operating the up and down direction cursor buttons 45c and 45d of the remote controller 40. It is possible to rearrange them in order of recording date / time or title. In the thumbnail 65, an image of the recorded program selected by the cursor buttons 45c and 45d is displayed. In FIG. 5, the “variety A” program 67 is highlighted and its image is displayed. On the program information display screen 66, the program title, program content, and performer data are displayed. The user can perform operations such as reproduction, deletion, and editing on the selected recorded program.

  FIG. 6 is a flowchart showing the operation procedure of the automatic deletion prohibition setting process. In the automatic deletion prohibition setting process, the deletion prohibition setting unit 28 sets the prohibition of deletion of the recorded program, starting with the fact that the recorded program in the recording list 63 selected by the user is designated as prohibition of deletion. The program classification of the recorded program is determined from the program information of the recorded program prohibited from being deleted by the unit 29, and the characteristic information is extracted from the program information of the recorded program prohibited from being deleted based on the program classification by the extracting unit 30, and deleted. This is a process in which the prohibition setting unit 28 sets prohibition of deletion of a recorded program different from the recorded program whose deletion is prohibited, having the same characteristic information as the characteristic information.

  In S10, when the user designates deletion prohibition of the recorded program (for example, “variety A” program 67 in FIG. 5), the recording management unit 26 prohibits the deletion prohibition setting unit 28 from deleting the “variety A” program 67. Notify that it has been specified.

  FIG. 7 is a diagram showing a display example of a screen when the user specifies prohibition of deletion of a recorded program. For example, when the “variety A” program 67 is selected, the recording management unit 26 displays a deletion prohibition confirmation window 68 on the screen 10 a via the GUI control unit 25. When the user selects “Yes”, the recording management unit 26 notifies the deletion prohibition setting unit 28 that the “variety A” program 67 is designated to be deleted.

  Returning to FIG. 6, in S <b> 11, the deletion prohibition setting unit 28 sets deletion prohibition for a recorded program designated by the user (for example, “Variety A” program 67 in FIG. 5).

  In S12, the program classification determination unit 29 determines the program classification of the program for which deletion is prohibited. First, it is determined whether or not the program category is set to the first category. The program category of the first category is set to drama. The program classification determination unit 29 determines whether or not the program classification is drama. If it is a drama, the process proceeds to S15. If it is not a drama, the process proceeds to S13.

  In S15, the extraction unit 30 extracts characteristic information from the program information based on the program classification. The extraction unit 30 extracts a program title from the program information. In S16, the extraction unit 30 searches for a recorded program and extracts a recorded program having the same program title.

  In S17, the deletion prohibition setting unit 28 sets deletion prohibition for the recorded program searched / extracted in S16, and the process ends. If a recorded program with the same program title is not extracted in S16, the deletion is not prohibited in S17 and the process ends.

  In S13, the program classification determination unit 29 determines whether the program classification is set to the second classification. Here, it is determined whether the program classification is variety. If it is variety, it will move to S18. If it is not variety, it will move to S14.

  In S18, the extraction unit 30 extracts performer names from the program information. In S19, the extraction unit 30 searches for a recorded program and extracts a recorded program having a program title in which the same performer name appears.

  In S20, the deletion prohibition setting unit 28 sets semi-deletion prohibition for the recorded program searched / extracted in S19, and ends. If a recorded program in which the same performer name appears in S19 is not extracted, the process ends without setting semi-deletion prohibition in S20. The semi-deletion prohibition means that a recorded program is treated as an important title at a level equivalent to the prohibition of deletion. Therefore, it is not as important as a program for which deletion is prohibited, but it has a level of importance corresponding to it.

  In S14, the program category determination unit 29 determines whether the program category is set to the third category. Here, it is determined whether or not the program classification is documentary. If it is documentary, the process proceeds to S21. If it is not documentary, exit.

  In S21, the extraction unit 30 extracts keywords from the program information. In S22, the extraction unit 30 searches for a recorded program and extracts a recorded program having program information in which the same keyword appears.

  In S20, the deletion prohibition setting unit 28 sets semi-deletion prohibition for the recorded program searched / extracted in S22, and the process ends. If a recorded program having program information in which the same keyword appears is not extracted in S22, the process ends without setting semi-deletion prohibition in S20.

  FIG. 8 is a diagram showing an example of the definition of the processing type of a recorded program in the automatic deletion prohibition setting process. The program classification is determined from the program information of the recorded program, the determination type is set according to the 13 types of classification items, and the prohibited type is set.

  The determination type indicates a means for searching for other related programs with respect to a recorded program for which deletion is prohibited by the user. The prohibition type indicates a deletion prohibition type that is valid for other recorded programs searched by the search item indicated by the determination type. “Prohibition”, which is the prohibition as the first stage, is unconditionally treated as a deletion prohibition program in the same manner as when the user directly performs the deletion prohibition designation operation. The “second prohibition” that is the second stage prohibition is treated as an important title at a level equivalent to the deletion prohibition. Many types of processing can be defined by combinations of these settings. The determination type search item may be anything as long as it can be specified from the program information of the recorded program for which the direct deletion prohibition designation operation has been performed.

  The column on the left side of the processing type table 69 is the target classification number, which indicates the target program classification and the priority of determination in the automatic deletion prohibition setting process. In FIG. 8, the first classification to the third classification are shown. In this case, drama is set as the first classification, variety is set as the second classification, and documentary / education is set as the third classification. The other program categories are not subject to automatic deletion prohibition setting processing.

  The target classification number can be set up to the thirteenth classification and can be set by the user. It is also possible to set only the first classification and not set the second and subsequent classifications. The user can also set the judgment type and the prohibition type corresponding to the program classification. As for the judgment type, for example, a program title, whether it is a series program, broadcast date / time, channel, performer, keyword, etc. can be set. For the prohibition type, prohibition and semi-prohibition can be set.

  The operation procedure of the automatic deletion prohibition setting process described in FIG. 6 is based on the example shown in FIG. Drama is set as the first classification, variety is set as the second classification, and documentary / education is set as the third classification. Apart from the examples shown in FIG. 6 and FIG. 8, when the user wants to make the program classification of sports most important, the sports program classification is set as the first classification, and the determination type is set as a keyword. It is only necessary to set the competition item and prohibit the prohibited type. If animation / special effects is a semi-important program category, the second category is used, and the prohibited type may be semi-prohibited. It is possible to automatically set prohibition of deletion for a program category with high user interest.

  FIG. 9 is a flowchart showing the operation procedure of the automatic deletion determination process. The automatic deletion judgment process, when a recording reservation operation is performed by the user, confirms the remaining capacity of the recording device and determines whether the remaining capacity is sufficient for recording the reserved program. Is a process of extracting a program that can be deleted from the recorded programs. The automatic deletion determination process is started when a recording reservation operation is performed by the user.

  In S30, the recording manager 26 obtains the remaining capacity of the recording apparatus excluding the deletion list and the deletion schedule notification list. The deletion list is a list of recorded programs to be deleted when the remaining capacity becomes insufficient, and is stored in the flash memory 19. The deletion schedule notification list is a list for notifying the deletion of the oldest program among the recorded programs for which semi-deletion prohibition is set and a program that has passed a predetermined time or more from the recording time. A deletion schedule notification list is also stored in the flash memory 19.

  In S31, the recording management unit 26 determines whether or not the remaining capacity is insufficient. If it is insufficient, the process proceeds to S32. If it is not insufficient, the process ends.

  In S32, the recording management unit 26 determines whether there is a program that has not been prohibited from being deleted or that has not been prohibited from being semi-deleted after a predetermined time has elapsed. If there is a corresponding recorded program, the process proceeds to S33, and if there is no corresponding recorded program, the process proceeds to S34. In S33, the recording management unit 26 extracts the oldest program from the corresponding recorded programs and registers it in the deletion list. Thereafter, the process proceeds to S30 to check the remaining amount.

  In S34, the recording management unit 26 determines whether there is a semi-deletion prohibited program for which a predetermined time has elapsed. If there is a corresponding recorded program, the process proceeds to S35, and if there is no corresponding recorded program, the process proceeds to S36. In S35, the recording management unit 26 extracts the oldest program from the corresponding semi-deletion prohibited recorded programs and registers it in the deletion schedule notification list. Thereafter, the process proceeds to S30 to check the remaining amount.

  In S36, the recording management unit 26 determines that there is no program that can be deleted, notifies the user that the recording device is insufficient, and ends the process.

  FIG. 10 is a diagram showing an example of the deletion schedule confirmation window 70. It is an example of a screen presented on the screen 10a when a user performs a reservation operation for a program selected on the EPG screen 60 and the program is registered in the deletion schedule notification list. The recording management unit 26 displays a deletion schedule confirmation window 70 on the screen 10 a via the GUI control unit 25. The recorded program displayed in the deletion schedule confirmation window 70 is considered not to be deleted directly by the user, but is a semi-deletion prohibited program and an important title similar in content to the deletion prohibited program. Show the user that there is a risk of deletion.

  When the user selects “Yes” in the deletion schedule confirmation window 70, the recording management unit 26 deletes the program displayed in the deletion schedule confirmation window 70 from the recording device. If “No (selection of deletion title)” is selected, the recording management unit 26 closes the deletion schedule confirmation window 70, and the user manually selects the deletion title separately.

  FIG. 11 is a diagram showing an example of the deletion schedule notification window 71. In the example of the screen that is displayed when the scheduled recording notification is automatically updated and the deletion schedule notification list is updated while the user is normally watching and a new important title deletion schedule is added. is there. A message notifying that an important title is scheduled to be deleted is displayed in the deletion schedule notification window 71. Along with this, the user displays a deletion schedule list and performs necessary operations.

  As described above, the deletion prohibition setting unit 28 sets the prohibition of the deletion of the recorded program, starting with the fact that the deletion prohibition of the recorded program in the recording list 63 selected by the user is designated by the automatic deletion prohibition setting process. The program classification of the recorded program is determined from the program information of the recorded program prohibited from being deleted by the program classification determining unit 29, and the characteristic information is obtained from the program information of the recorded program prohibited from being deleted based on the program classification by the extracting unit 30. Is deleted, and the deletion prohibition setting unit 28 sets a prohibition on deletion of a recorded program different from the deletion-prohibited recorded program having the same characteristic information as the characteristic information.

  Other programs related to the program designated by the user to be prohibited from deletion are automatically prohibited from being deleted or quasi-deleted, thereby simplifying the user operation. In this way, it is possible to select in advance an important title that is highly interested by the user and should not be included in the automatic deletion target from a large number of recorded titles without performing complicated operations.

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

1 Digital Broadcasting Receiver 2 Antenna 3 Tuner 4 Demultiplexer 5 Decode Processing Unit 6 Program Information Decoding Unit 7 Video / Audio Decoding Unit 8 Superimposition Processing Unit 9 Video Display Unit 10 Display Device 10a Screen 11 Audio Processing Unit 12 Speaker 13 Bus 14 Control Unit 15 MPU
17 RAM
18 ROM
DESCRIPTION OF SYMBOLS 19 Flash memory 20 Operation receiving part 21 Operation apparatus 22 Transmission / reception part 23 Recording apparatus 24 Recorded program control part 25 GUI control part 26 Recording management part 27 Recording reservation part 28 Deletion prohibition setting part 29 Program classification determination part 30 Characteristic information extraction part 31 Broadcast Station 32 Network 33 Server 33 Server 34 Keyword 40 Remote control 45a-45d Cursor button 46 Decision button 47 Program guide button 49 Program guide button 50 Recording list button 60 EPG screen 61 Browser screen 62 Recording list screen 63 Recording list 68 Deletion prohibition confirmation window 69 Process Type Table 70 Deletion Schedule Confirmation Window 71 Deletion Schedule Notification Window

Claims (6)

Deletion prohibition setting section for setting prohibition of deletion of recorded programs,
A program classification determination unit for determining a program classification of the recorded program from program information of the recorded program;
An extraction unit that extracts characteristic information from the program information based on the program classification,
The digital broadcast receiver, wherein the deletion prohibition setting unit sets prohibition of deletion of a recorded program different from the recorded program having the same characteristic information as the characteristic information.   2. The digital broadcast receiver according to claim 1, further comprising a recording device for recording the recorded program.   The digital broadcast receiver according to claim 1, wherein the program classification determination unit determines at least one type of program classification.   The extraction unit extracts characteristic information of the recorded program according to the first category from the program information when the recorded program is classified into the first category, and when the recorded program is classified into the second category 2. The digital broadcast receiver according to claim 1, wherein characteristic information of the recorded program corresponding to the second classification is extracted from the program information.   The deletion prohibition setting unit searches for a recorded program different from the recorded program having the same characteristic information as the characteristic information extracted by the extraction unit when the recorded program is classified into the first category, and is searched The recording program different from the recorded program having the same characteristic information as the characteristic information extracted by the extracting unit when the recording program is prohibited from being deleted in the first stage and the recorded program is classified into the second category. 5. The digital broadcast receiver according to claim 4, wherein a program is searched and prohibition of deletion in the second stage of the searched recorded program is set. Set prohibition of deletion of recorded programs,
Determining a program classification of the recorded program from program information of the recorded program;
Extracting characteristic information from the program information based on the program classification;
A method for controlling a recorded program, wherein prohibition of deletion of a recorded program different from the recorded program having the same characteristic information as the characteristic information is set.

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