JP4381359B2 - Recording / playback device - Google Patents

Description

  The present invention relates to a recording / reproducing apparatus for recording a broadcast program on a recording medium and reproducing the program recorded on the recording medium. Further, the present invention relates to a recording / reproducing apparatus having a reservation recording function for recording a program by setting a recording start time and an end time in advance.

  2. Description of the Related Art Conventionally, recording and playback devices such as video decks and hard disk recorders that record television programs record television programs while the user is away by setting the recording start time and end time in advance. It has a reservation recording function. In recent years, a program guide is displayed using electronic program guide information (hereinafter referred to as EPG (Electronic Program Guide)) transmitted together with a program, and a program to be recorded is selected from the program guide. Recording / reproducing apparatuses capable of making reservations have been put into practical use.

  Patent Document 1 proposes a program search apparatus that can search a program including a keyword input by a user from an EPG and automatically record the searched program. As a result, for example, when the user inputs “soccer” as a keyword, all football relays are automatically recorded, so there is no need for the user to make a reservation for each program and there is less possibility of missing a desired program. There is an advantage of becoming.

  However, for sports programs such as baseball or soccer, the game may not end within the scheduled time, and the broadcast time of the program may be extended. Even when the broadcast time is extended, the scheduled recording ends at the set end time, so that there is a problem that the sports program cannot be recorded to the end. Moreover, even if the program itself is a program such as a drama or a movie that is not extended, when it is broadcast after a sports program, the program start time and end time are delayed, so the program cannot be recorded to the end. There is a problem.

  In digital broadcasting, when an extension of a program occurs, the EPG is automatically updated. Therefore, the recording / playback apparatus that has received the updated EPG changes the recording reservation start time and end time and records the program. It can be carried out. However, in the case of analog broadcasting, the EPG is not updated even if the program is extended. Therefore, since the recording / reproducing apparatus for recording an analog broadcast program cannot determine the extension of the program, the recording reservation cannot be automatically changed. The problem was solved by setting the end time later.

In Patent Document 2, a keyword including the possibility of extending broadcast time, for example, a program including “maximum extension” is searched from the EPG, and time information indicating the maximum extension time associated with this keyword is read and read. A recording / playback apparatus that changes the end time of a recording reservation according to time information has been proposed. As a result, it is possible to record a program whose broadcast time may be extended or a program whose broadcast start time and end time may be delayed to the end.
JP 2002-252813 A JP 2004-289565 A

  In the recording / playback apparatus described in Patent Document 2, the keyword used when searching for an extended program from the EPG is a keyword determined in advance by the apparatus. However, this keyword does not necessarily search for programs that may be extended. For example, baseball broadcasts that may be extended can be searched, but other broadcasts such as soccer broadcasts and volleyball broadcasts can be searched. There is a possibility that it cannot be done.

  Since the keyword used for the search is fixed, if the EPG includes a program that cannot be searched by this keyword, the recording / playback apparatus will not search for this program even if the same program is repeatedly broadcast thereafter. It becomes possible. Since there is a possibility that this program can be searched by adding or changing a keyword, it may be possible to add or change the keyword stored in the recording / reproducing apparatus. When the keyword is changed, there is a possibility that a program that can be searched before the keyword is changed cannot be searched after the change.

The present invention has been made in view of such circumstances, and the purpose of the present invention is that a keyword for searching a program for which the broadcast time may be extended from the EPG is actually extended. The keyword is added or changed based on the keyword hit rate by calculating the hit rate of each keyword indicating the probability that the broadcasted program can be searched. An object of the present invention is to provide a recording / reproducing apparatus capable of more reliably searching for an extended program.
Another object of the present invention is to provide a recording / reproducing apparatus that can confirm the keyword hit rate when the user adds or changes a keyword by displaying the keyword hit rate and notifying the user. .

  Another object of the present invention is to provide a recording / reproducing apparatus that allows a user to add or change a keyword by providing a means for receiving an input of the keyword from the user. .

  Another object of the present invention is to display a keyword hit rate by arranging a plurality of keywords according to the hit rate so that the user can hit each keyword. It is an object of the present invention to provide a recording / reproducing apparatus in which the rate can be easily confirmed.

  Another object of the present invention is to display the keyword according to the hit rate when displaying the keyword hit rate, for example, to change the display color or to provide a difference in display density. By adopting a configuration for performing the above, it is an object of the present invention to provide a recording / reproducing apparatus in which the user can easily check the hit rate for each keyword.

  Another object of the present invention is to determine a program that includes a search keyword as a program whose broadcast time may be extended, and to change the recording reservation time of this program. Accordingly, an object of the present invention is to provide a recording / reproducing apparatus capable of reliably recording a program such as a baseball broadcast or a soccer broadcast in which the broadcast time may be extended.

  Another object of the present invention is to determine that a program whose search keyword is included in a program broadcast in the previous time zone on the same channel is a program whose broadcast time may be changed. An object of the present invention is to provide a recording / reproducing apparatus capable of reliably recording a program broadcast after a baseball broadcast, a soccer broadcast, or the like by changing the recording reservation time of the program.

  Another object of the present invention is that, after recording a program by delaying the end time of the recording reservation, if the recorded program is played back by the user, the part with the delayed end time is played back. By determining whether or not the program is actually extended depending on whether or not, it is possible to determine whether or not the program whose recording reservation time has been changed has actually been extended. An object of the present invention is to provide a recording / reproducing apparatus capable of calculating a keyword hit rate.

The recording / reproducing apparatus according to the present invention determines a receiving means for receiving a broadcast program, a means for acquiring program information relating to the program received by the receiving means, and the possibility of extending the broadcast time of the program. Means for storing a plurality of keywords for the search, search means for searching for program containing the stored keyword from program information, recording means for recording the program received by the receiving means, and a program including the recording time by the recording means In a recording / reproducing apparatus comprising means for accepting a recording reservation and reproducing means for reproducing a recorded program, the broadcast time can be changed in the program related to recording reservation based on the search result of the searching means First determining means for determining a program having a characteristic, changing means for changing the recording time related to the recording reservation in accordance with the determination result of the first determining means, and the recording changed by the changing means A second determination means for determining whether or not a program related to about has been broadcast with the time changed; and the number of programs determined to have been broadcast with the time changed by the second determination means When the first determination means determines the program, the keyword hit indicating the number of hits corresponding to each keyword in the program information of the program that is the search result of the search means that is the determination criterion It is characterized by comprising a calculation means for calculating the rate and a display processing means for performing processing for displaying the calculation result of the calculation means .

In the present invention, a program whose broadcast time may be extended from the EPG is searched using a keyword registered in advance. If the program for which scheduled recording is to be performed is a program whose broadcasting time may be extended or a program that may be delayed due to the influence of the extended program, the recording time of the recording reservation is changed. . Thereby, even if the broadcast time is changed, the program can be recorded to the end. In addition, when a program whose broadcast time has actually changed is searched and determined that the program may have a change in broadcast time, the number of hits for each keyword corresponding to the search is actually The ratio of the changed program to the number of programs is calculated as the hit rate of each keyword. Thereby, the validity of the registered keyword can be determined.
Also, the hit rate of each keyword is displayed. Thereby, when a user adds or changes a keyword, it can add or change, confirming the keyword hit rate.

  In addition, the recording / reproducing apparatus according to the present invention includes a keyword receiving unit that receives a keyword to be stored.

  In the present invention, when a keyword input from a user is received, the received keyword is registered, and a program whose broadcast time may be extended is searched from the EPG, the registered keyword is used. The user can add or change keywords according to the broadcast status of the program or the content of the EPG.

  The recording / reproducing apparatus according to the present invention is characterized in that the display processing means displays a plurality of keywords side by side in the order of the hit rates calculated by the calculation means.

  In the present invention, when displaying the keyword hit rate, a plurality of keywords are rearranged and displayed in order of increasing or decreasing hit rate. This makes it easy for the user to check the effectiveness of each keyword.

  Further, the recording / reproducing apparatus according to the present invention is characterized in that the display processing means changes the display of keywords according to the hit rate calculated by the calculating means.

  In the present invention, when displaying the hit rate of a keyword, the user confirms the effectiveness of each keyword by changing the display color according to the hit rate or providing a difference in display shade. Easy to do.

  Further, in the recording / reproducing apparatus according to the present invention, when the first determination unit includes the program related to the recording reservation in the program searched by the searching unit, the broadcast time of the program related to the recording reservation is changed. It is characterized in that it is determined that the program is likely to be played.

  In the present invention, a program including a search keyword is determined as a program whose broadcast time may be extended. Thereby, it is possible to change the recording reservation time of a program that may extend the broadcasting time of baseball broadcasting or soccer broadcasting.

  Further, in the recording / reproducing apparatus according to the present invention, the first determination means broadcasts the program broadcasted in the time zone before the program related to the recording reservation and broadcast on the same channel as the program related to the recording reservation, When the search means includes the searched program, the program related to the recording reservation is determined to be a program whose broadcast time may be changed.

  In the present invention, a program in which a search keyword is included in a program broadcast in the previous time zone on the same channel is determined as a program whose broadcast time may be changed. Thereby, it is possible to change the recording reservation time of a program broadcast after a baseball broadcast or a soccer broadcast.

  Further, in the recording / reproducing apparatus according to the present invention, the changing means delays an end time related to the recording reservation by a predetermined time, and the second determining means is configured to reproduce the recorded program. It is characterized in that it is determined whether or not the part delayed by the changing means has been reproduced, and if it has been reproduced, it is determined that the program has been broadcast in an extended or delayed manner.

  In the present invention, after recording a program with the recording reservation end time delayed, when the recorded program is played back by the user, the program is actually executed depending on whether or not the portion with the delayed end time is played back. It is determined whether or not it has been extended. As a result, it is possible to calculate the effectiveness when searching for a program in which the broadcasting time of each keyword is actually extended as a hit rate.

In the case of the present invention, when a program in which the broadcast time is actually changed is searched and determined that the program has a possibility of changing the broadcast time, the number of corresponding keywords in the search is actually By adopting a configuration in which the ratio of the program whose broadcast time is changed to the number of programs is calculated as the keyword hit rate, keywords can be added or changed based on the keyword hit rate. Therefore, since a keyword with higher search efficiency can be used according to the broadcast status of the program or the contents of the EPG, the program can be more reliably recorded to the end when the broadcast time of the program is changed. it can.
In addition, since the keyword hit rate is displayed and notified to the user, the keyword hit rate can be confirmed when the user adds or changes the keyword. It is easy to set keywords with higher search efficiency.

  Further, in the case of the present invention, a keyword is input from a user, and a keyword used for searching is added or changed, so that a keyword is searched according to the broadcast status of the program or the contents of the EPG. Therefore, it is possible to record a program whose broadcast time has been changed more reliably to the end.

  In addition, according to the present invention, when displaying the hit rate of keywords, the plurality of keywords are rearranged and displayed in descending order of the hit rate, etc., so that the user can determine the hit rate for each keyword. It is easy to check and it is easy to judge the effectiveness of each keyword.

  Further, according to the present invention, when displaying the keyword hit rate, the user can select the hit rate for each keyword by changing the display color according to the hit rate or by providing a difference in the display shade. It is easy to check the rate and to judge the effectiveness of each keyword.

  Further, according to the present invention, it is possible to extend the broadcasting time of baseball broadcasting, soccer broadcasting, etc. by determining that the program including the search keyword is a program whose broadcasting time may be extended. Since it is possible to change the recording reservation time of a program having a characteristic, it is possible to reliably record the program.

  Further, according to the present invention, a program in which a search keyword is included in a program broadcast in the previous time zone on the same channel is determined to be a program whose broadcast time is likely to be changed. Since it is possible to change the recording reservation time of a program broadcast after broadcasting or soccer broadcasting, the program can be recorded reliably.

  Further, in the case of the present invention, after recording the program by delaying the end time of the recording reservation, when the recorded program is reproduced by the user, depending on whether or not the portion with the delayed end time is reproduced, By determining whether or not a program has actually been extended, the effectiveness of searching for a program in which each keyword is actually extended can be calculated as a hit rate. An effective keyword can be added or changed, and a program whose broadcast time has been changed can be more reliably recorded to the end.

  Hereinafter, the present invention will be specifically described with reference to the drawings showing embodiments thereof. FIG. 1 is a block diagram showing a hardware configuration of a hard disk recorder according to the present invention. In the figure, reference numeral 1 denotes a hard disk recorder, and an external display device 51 such as a CRT display or a liquid crystal display is connected to the hard disk recorder 1 via a cable (not shown). The hard disk recorder 1 outputs a program recorded in the internal hard disk 19 or a program received by the tuner 11 from the output unit 15 having video and audio output terminals to the display device 51, and displays the program on the display device 51. To do. The hard disk recorder 1 also includes a remote controller (remote controller) 52 for a user to perform remote operation.

  A tuner 11 included in the hard disk recorder 1 is a tuner that receives terrestrial analog broadcasting. The analog program signal received by the tuner 11 is given to the A / D converter 13 and converted into digital program data by the A / D converter 13. Further, the program data converted by the A / D converter 13 is given to the encoder 14. The encoder 14 compresses the given program data into MPEG-2 format data, and the compressed program data is given to the control unit 10.

  The control unit 10 controls the operation of each unit of the hard disk recorder 1, and when recording a program, the program data given from the encoder 14 is given to the hard disk controller 20 and recorded on the hard disk 19. . When the program recorded on the hard disk 19 is reproduced, the control unit 10 reads the compressed program data from the hard disk 19 via the hard disk controller 20.

  Program data read from the hard disk 19 is given to the decoder 18, decompressed by the decoder 18, and given to the D / A converter 17. The D / A conversion unit 17 converts the given digital program data into an analog program signal and supplies the analog program signal to the selection unit 16. The selection unit 16 is provided with the program signal converted by the D / A conversion unit 17 and the program signal received by the tuner 11, and is further provided with a display command such as a menu and a recording reservation confirmation screen from the control unit 10.

  When displaying the program recorded on the hard disk 19 on the display device 51, the selection unit 16 gives the program signal from the D / A conversion unit 17 to the output unit 15. When displaying the broadcast program on the display device 51 in real time, the selection unit 16 gives the program signal from the tuner 11 to the output unit 15. In addition, when a display command such as a menu or a recording reservation confirmation screen is given from the control unit 10, the selection unit 16 does not give a program signal to the output unit 15, such as a menu or a recording reservation confirmation screen prepared in advance. An image signal is given to the output unit 15. The output unit 15 is provided with output terminals for video output and audio output, and the program signal given from the selection unit 16 is given to the display device 51 connected to the output terminal and displayed on the display device 51. The

  The program signal received by the tuner 11 is superposed with an EPG having information such as the program name of the program to be broadcast, broadcast time, genre, performer and description of contents, and the tuner 11 has received the EPG acquisition unit 12. The EPG is separated from the program signal and supplied to the control unit 10. The control unit 10 stores the given EPG in the memory 21. Further, when displaying the program guide on the display device 51, the control unit 10 reads out the EPG from the memory 21, creates the program guide, and gives it to the selection unit 16 together with the program guide display command. The selection unit 16 given the program guide and the display command gives the program guide to the output unit 15 and displays the program guide on the display device 51.

  The memory 21 includes an EPG storage unit 21a for storing the above-described EPG, a recording reservation storage unit 21b for storing a recording reservation including information such as a recording channel, a recording start time, a recording end time, and a recording image quality, and a broadcast time. A keyword storage unit 21c for storing a keyword for searching for a program that may be extended, and an extended information storage unit 21d for storing information about the extended program for calculating a keyword hit rate are provided. ing. The memory 21 includes a nonvolatile rewritable memory element such as a flash memory or an EEPROM.

  Further, the hard disk recorder 1 includes an operation unit 22 and an infrared light receiving unit 23. The operation unit 22 is provided with a plurality of buttons for recording, playback, channel selection, setting menu display, and the like, and accepts an operation from the user and gives an operation request from the user to the control unit 10. . As with the operation unit 22, the remote controller 52 is provided with a plurality of buttons for accepting operations. The operation request from the user is converted into an infrared signal and transmitted from an infrared light emitting unit (not shown). The infrared light receiving unit 23 converts an infrared signal transmitted from the remote controller 52 into an operation request for an electric signal and gives it to the control unit 10.

  The hard disk recorder 1 can record and reproduce a program in response to an operation request from a user, and can record a program by setting a recording reservation such as a recording time and a channel. When setting the recording reservation, the program guide is displayed from the acquired EPG, and the user can select the program from the program guide. The recording reservation can be made without inputting the recording time and channel of the program. Can be set.

  Further, the hard disk recorder 1 has a function of searching for programs that may extend the broadcasting time such as baseball or soccer from the acquired EPG. Thereby, when the program related to the recording reservation set by the user is baseball or soccer, or when it is a drama or movie broadcasted after baseball or soccer, etc., the broadcast time may be changed. This can be determined, and the user can be prompted to change the recording reservation end time.

  When searching for a program whose broadcast time may be extended from the EPG, the hard disk recorder 1 searches the EPG for a program that includes a preset search keyword in the program information. A plurality of search keywords are stored in the keyword storage unit 21c of the memory 21 and can be added or changed by the user operating the operation unit 22 or the remote controller 52. In addition, the hit rate of each keyword can be displayed so that the user can determine the effectiveness of the added or changed keyword.

  The hit rate here refers to the case where these programs are determined for the number of programs whose broadcasting time has actually changed among the programs whose broadcasting time has been determined to change. In addition, a program searched by a keyword and contributed to the determination (when the recording reservation program is baseball or soccer, etc., the program contributing to the determination is the program itself, and the recording reservation program is a drama or a movie, etc. In some cases, the program that contributed to the determination indicates the number of times each keyword corresponds to the program information of a baseball or soccer program broadcasted in the previous time zone of a drama or movie, etc. .

  Tables 1 and 2 show examples of calculating the hit rate of each keyword. Three search keywords (“A”, “B”, “C”) are stored in the keyword storage unit 21c. From these keywords, it is determined that there is a possibility that the broadcast time may be changed, and there are five programs (programs 1 to 5) recorded with the recording reservation end time delayed. The keywords that contributed to the determination of each program are as shown in Table 1. Among these programs, the programs whose broadcast times are actually changed are programs 2, 3, and 4.

  At this time, the number of times that the keyword “A” corresponds to the program whose broadcast time has actually changed (the number of hits) is one, the number of hits of the keyword “B” is three, and the hit of the keyword “C” The number of times is one. Since the number of programs whose broadcasting time has actually changed is three, the hit rate of the keyword “A” is 1/3 = 33%, the hit rate of the keyword “B” is 3/3 = 100%, The hit rate of the keyword “C” is 1/3 = 33%.

  From the above calculation results, it can be seen that because the keyword “B” has a high hit rate, it is possible to most efficiently search for a program whose broadcasting time has actually been changed. Details of keyword addition and change processing, recording reservation end time changing processing, hit rate calculation processing for each keyword, and the like will be described later.

  FIG. 2 is a flowchart showing a process performed by the control unit 10 when performing keyword setting of the hard disk recorder 1 according to the present invention. The keyword can be set by pressing a “setting menu” button (not shown) provided on the operation unit 22 or the remote controller 52 and selecting a keyword setting item from the menu displayed on the display device 51. The control unit 10 checks whether or not the keyword setting item has been selected (step S1), and if it has not been selected (S1: NO), it waits until it is selected.

  When the keyword setting item is selected (S1: YES), a keyword already registered is read from the keyword storage unit 21c of the memory 21 (step S2). Next, the read keyword and the display command for the keyword setting screen are given to the selection unit 16, and the keyword setting screen is displayed on the display device 51 via the output unit 15 (step S3).

  3 and 4 are display examples of the keyword setting screen displayed by the hard disk recorder 1 according to the present invention. The hard disk recorder 1 according to the present embodiment stores five keywords in the keyword storage unit 21c, and can search the EPG for programs that may change the broadcast time.

  In the keyword setting screen shown in FIG. 3, the screen title and date and time are displayed at the top of the screen, and information related to the keyword setting screen is briefly described in character strings of two to three lines below this. Under the text of the description, six rectangular boxes are arranged one above the other, and a rectangular cursor 31 surrounding the box is moved up and down by cursor keys provided on the operation unit 22 or the remote controller 52. By pressing the “OK” button, one of the six boxes can be selected. The five boxes from the top correspond to the keywords 1 to 5, and the bottom box corresponds to the end of setting. In the boxes corresponding to the keywords 1 to 5, already set keywords are displayed. In FIG. 3, "extension" is set for the keyword 1, "baseball" is set for the keyword 2, and " “Decrease” is set. For keywords 4 and 5, no keyword is set. Further, by depressing a “return” button, it is possible to return to the previous screen, that is, a screen (not shown) on which a setting menu having a keyword setting item is displayed. Furthermore, the keyword setting can be ended and the program display screen can be returned by pressing the “end” button or selecting a setting end box.

  When the boxes of keywords 1 to 5 are selected, as shown in FIG. 4, an input window 32 is displayed on the keyword selection screen, and keyword characters can be input. In the input window 32, hiragana, katakana, alphanumeric characters and symbols can be input, and kanji conversion is performed by using the “blue” and “green” buttons provided on the operation unit 22 or the remote control 52. Can do. If the “yellow” button is pressed, the character input for the keyword is terminated, the input window 32 is hidden, and the screen returns to the keyword setting screen.

  After displaying the keyword setting screen in step S3 of the flowchart shown in FIG. 2, the control unit 10 determines whether the setting end box on the keyword setting screen is selected or the “end” button is pressed. It is checked whether or not the keyword setting is completed (step S4). If the setting is not completed (S4: NO), the process returns to step S3 and the keyword setting screen is displayed until the setting is completed. When the keyword setting is completed (S4: YES), the set five keywords are stored in the keyword storage unit 21c of the memory 21 (step S5), and the process is terminated.

  5 and 6 are flowcharts showing processing performed by the control unit 10 when setting recording reservation of the hard disk recorder 1 according to the present invention. The recording reservation can be set by pressing a “setting menu” button provided on the operation unit 22 or the remote controller 52 and selecting a reservation setting item from the menu displayed on the display device 51. The control unit 10 checks whether or not a reservation setting item has been selected (step S11), and if it has not been selected (S11: NO), it waits until it is selected.

  When the reservation setting item is selected (S11: YES), the EPG is read from the EPG storage unit 21a of the memory 21 (step S12). The EPG can be received at a predetermined time from several times to several tens of times a day. The hard disk recorder 1 acquires the EPG separately from the program signal received by the tuner 11 by the EPG acquisition unit 12 at a predetermined time, and stores the acquired EPG in the EPG storage unit 21a in advance. After reading out the EPG in step S12, a program guide is created from the EPG, a program guide display command is given to the selection unit 16, and the program guide is displayed on the display device 51 (step S13).

  FIG. 7 is a display example of a program guide displayed by the hard disk recorder 1 according to the present invention. In this display example, a list of programs broadcast between 9 pm and 10 pm is displayed. In the program guide, a plurality of rectangular boxes are arranged one above the other, and a channel number, a broadcasting station name, and a program title are written in each box. The rectangular cursor 33 surrounding the box is moved up and down by the cursor key provided on the operation unit 22 or the remote controller 52, and the “OK” button is pressed to reserve recording of one program among a plurality of programs. It can be selected as a program to be performed. Further, by pressing the “return” button, it is possible to return to the previous screen, that is, the screen on which the setting menu having the reservation setting item is displayed. Furthermore, you can display detailed information about the program by pressing the “blue” button, search for the program by pressing the “red” button, and press the “green” button. The date and time of the program guide to be displayed can be selected.

  After displaying the program guide in step S13, it is checked whether or not a program for recording reservation has been selected from the program guide (step S14). If no program is selected (S14: NO), the process returns to step S13, and the display of the program table is continued. When a program is selected (S14: YES), a program whose broadcast time may be extended from the EPG is searched using the keyword stored in the keyword storage unit 21c (step S15). The search target to be searched at this time is a program related to recording reservation and a program broadcast in the time zone before this program and broadcast on the same channel.

  Next, it is checked whether or not the program searched for the possibility that the broadcast time may be extended matches the program related to the recording reservation (step S16). If they match (S16: YES), the user gives an instruction to display an extension setting screen for extending the recording reservation end time to the selection unit 16 and displays the extension setting screen (step S17). In addition, the case where it corresponds in step S16 is a case where the program concerning recording reservation is a program such as baseball or soccer, and the case where the recording reservation program itself is extended.

  FIG. 8 is a display example of an extension setting screen displayed by the hard disk recorder 1 according to the present invention. The extension setting screen is an extension setting window 34 superimposed on a reservation confirmation screen described later. In the extension setting window 34, five rectangular boxes are arranged side by side. The extension time is described in each box, and is “not extended”, “30 minutes extended”, “60 minutes extended”, “90 minutes extended” and “120 minutes extended” in order from the left. The rectangular cursor 35 surrounding the box is moved left and right by the cursor key provided on the operation unit 22 or the remote controller 52, and the “determine” button is pressed to set the extension time of the recording reservation end time. be able to.

  After the extension setting screen is displayed in step S17, it is checked whether or not the setting is completed (step S18). If the setting has not been completed (S18: NO), the process returns to step S17 to continue displaying the extension setting screen. When the setting of the extension time is completed (S18: YES), the recording reservation end time is extended (step S19). The hard disk recorder 1 stores an extended program management table in which information related to a program whose recording reservation end time is extended is stored in the extension information storage unit 21d of the memory 21, and the recording reservation end time is extended. In this case, the program related to the recording reservation is registered in the extended program management table (step S20). The extended program management table will be described later.

  If the program searched for the possibility that the broadcast time may be extended in step S16 does not match the program related to the recording reservation (S16: NO), and the program is registered in the extended program management table in step S20. Then, it is checked whether the program broadcast in the time zone before the program related to the recording reservation matches the program searched for the possibility that the broadcast time is extended (step S21). If they match (S21: YES), that is, if the program related to the recording reservation is a drama or movie broadcast after a program such as baseball or soccer, the extension setting screen shown in FIG. 8 is displayed (step S22). ).

  After displaying the extension setting screen, it is checked whether or not the setting is completed (step S23). If the setting is not completed (S23: NO), the process returns to step S22 and the display of the extension setting screen is continued. . When the setting of the extension time is completed (S23: YES), the recording reservation end time is extended (step S24), and the program related to the recording reservation is registered in the extension program management table (step S25).

  FIG. 9 is a schematic diagram showing the configuration of the extended program management table according to the present invention. The extended program management table records the broadcast channel, program title, recorded date, recording time, start time of the extended portion of the recording time, end time of the extended portion, and the program recorded for the extended reserved program. A replay flag indicating whether or not the program has been replayed, an extension flag indicating whether or not the program has actually been extended, and a program related to recording reservation in steps S16 and S21 or a time zone before this program. There is an item of a keyword searched for the possibility that the program determined to match the program to be extended may be extended.

  For example, the drama 1 broadcasted or broadcasted on December 25th with 6 channels has an end time extended by 30 minutes and the original broadcast time is 1 hour, but the recording time is 1 hour 30 minutes The extended portion is 1:01 to 1:30. A baseball program is broadcast during a time period before this program is broadcast, and the baseball program may be extended by two keywords “baseball” and “extension” in step S15. This is because it is determined in step S21 that the broadcast time of the drama 1 may be changed. The playback flag and extension flag will be described later. When the playback flag is “1”, this indicates that the recorded program has been played back by the user. When the extension flag is “1”, the program is actually extended. It has been broadcast. At the stage where the recording reservation is set, both the reproduction flag and the extension flag are “0”.

  When the program broadcast in the time zone before the program related to the recording reservation in step S21 does not match the program searched for the possibility that the broadcast time is extended (S21: NO), and step S25 After registering the program in the extended program management table, a reservation confirmation screen display command is given to the selection unit 16 to display the reservation confirmation screen (step S26).

  FIG. 10 is a display example of a reservation confirmation screen displayed by the hard disk recorder 1 according to the present invention. On the reservation confirmation screen, the recording date of the program, the recording start time, the recording end time, the broadcast channel, the image quality when recording, and the extended time of the end time are displayed for the program selected from the EPG. Further, the remaining time that can be recorded on the hard disk 19 and the recording time of the program reserved for recording are displayed together. For example, FIG. 10 shows a setting for recording a program broadcast on 6 channels from 9 pm to 10 pm on December 25 with standard image quality. Since the extension time is set to 30 minutes, the recording time is 1 hour and 30 minutes.

  At the bottom of the reservation confirmation screen, two rectangular boxes are arranged side by side. In the box on the left side, the word “complete” is written to complete the recording reservation setting. In the box on the right, the text “To detailed settings” is written, and a screen for changing the recording image quality, setting the start time and end time in 1 minute units, and setting the extended time in detail (illustrated) Is omitted). The rectangular cursor 36 surrounding the box is moved to the left and right by the cursor keys provided on the operation unit 22 or the remote controller 52, and the “OK” button is pressed to complete the setting or display the detailed setting screen. be able to.

  After the reservation confirmation screen is displayed in step S26, it is checked whether or not the reservation setting is completed (step S27). If the reservation setting is not completed (S27: NO), the process returns to step S26 and the display of the reservation confirmation screen is continued. When the reservation setting is completed (S27: YES), the reservation content is stored in the recording reservation storage unit 21b of the memory 21 (step S28), and the process is terminated.

  The hard disk recorder 1 determines whether or not the program is actually extended when the user reproduces the program in the hard disk 19 after the program whose recording reservation end time is extended is recorded on the hard disk 19. FIG. 11 is an explanatory diagram for explaining a program extension determination method of the hard disk recorder 1 according to the present invention. In FIG. 11, (a) is an example in the case where the reservation recording of the baseball program is performed, and (b) is an example in the case of performing the reservation recording of the drama program.

  In the example of (a), the baseball program has a broadcast time of 2 hours, and since there is a possibility of extension, the recording time is set by extending the end time by 30 minutes. If the baseball program is not actually extended, the baseball program is recorded in the portion of the program recorded on the hard disk from the beginning to 2 hours. There are other programs recorded. When a user plays a program, the user is unlikely to play another program recorded in 30 minutes of the extended portion after the baseball program. On the other hand, when the baseball program is actually extended, the baseball program is recorded in 2 hours 30 minutes from the beginning to the end. When a user plays a program, the user is likely to play 30 minutes of the extension. Therefore, whether or not the baseball program is actually extended can be determined based on whether or not 30 minutes of the extended portion has been played by the user.

  In the example of (b), the drama program has a broadcast time of 1 hour, and the baseball program is broadcast before. Since the broadcast time may change when the baseball program is extended, the recording time is set by extending the end time by 30 minutes. If the baseball program is not actually extended, the drama program is recorded in the portion of the program recorded on the hard disk from the beginning to 1 hour, but in the 30 minutes from 1 hour 30 minutes thereafter There are other programs recorded. When playing back a program, the user is unlikely to play back another program recorded in 30 minutes of the extended portion after the drama program. On the other hand, when the baseball program is actually extended, the baseball program is recorded for 30 minutes from the beginning, and the drama program is recorded for 1 hour until 1 hour and 30 minutes thereafter. Yes. When a user plays a program, the user is likely to play 30 minutes of the extension. Therefore, it can be determined whether or not the baseball program is actually extended and the drama program is broadcast with the broadcast time changed depending on whether or not 30 minutes of the extended portion has been played by the user.

  FIG. 12 is a flowchart showing the processing performed by the control unit 10 when performing playback processing of the hard disk recorder 1 according to the present invention. Reproduction of programs recorded on the hard disk 19 is provided in the operation unit 22 or the remote controller 52 by displaying a list of recorded programs as thumbnails, for example, using the cursor keys to move the cursor to the desired program thumbnails. This can be done by pressing a “play” button (not shown). The control unit 10 checks whether or not a reproduction instruction has been given by the user by pressing the “reproduction” button (step S41). If no reproduction instruction has been given (S41: NO), reproduction control is performed. Wait until instructions are given.

  When a reproduction instruction is given (S41: YES), the extended program management table stored in the extended information storage unit 21d of the memory 21 is read (step S42). It is checked whether or not the program to be played is registered in the extended program management table, and it is checked whether or not the program to be played is a program whose recording end time is extended (step S43). If it is not registered in the extended program management table, the program to be played is not a program whose recording end time is extended (S43: NO), so the program is read from the hard disk 19 and played (step S44). . Thereafter, it is checked whether or not a “stop” button provided on the operation unit 22 or the remote controller 52 is pressed to give a reproduction end instruction from the user (step S45). When the end instruction is not given (S45: NO), the process returns to step S44, and the reproduction of the program is continued. When the end instruction is given (S45: YES), the reproduction is stopped (step S53), and the process is ended.

  If the program to be reproduced is registered in the extended program management table in step S43, that is, if the program to be reproduced is a program whose recording end time is extended (S43: YES), The item of the reproduction flag in the middle is set to “1” (step S46), and the program is reproduced (step S47). Thereafter, it is checked whether or not the extension portion in the recorded program is reproduced (step S48). If the extension portion is reproduced (S48: YES), the extension flag in the extension program management table is set. The item is set to “1” (step S49). After the extension flag is set and when the extension portion is not played back in step S48 (S48: NO), the “stop” button provided on the operation unit 22 or the remote controller 52 is pressed, and the user instructs the end of playback. Is checked (step S50). If the end instruction is not given (S50: NO), the process returns to step S47, and the reproduction of the program is continued.

  When an instruction to end reproduction is given (S50: YES), it is further checked whether or not the extension flag in the extension program management table is set to “1” (step S51). When the extension flag is set to “1” (S51: YES), the hit rate table stored in the extension information storage unit 21d of the memory 21 is updated (step S52). Details of the hit rate table and the hit rate table update process will be described later. After the update process of the hit rate table and when the extension determination flag is not set to “1” in step S51 (S51: NO), the process proceeds to step S53, the program reproduction is stopped and the process is terminated.

  FIG. 13 is a schematic diagram showing the configuration of the hit rate table of the hard disk recorder according to the present invention. For each of the five keywords, the hit rate table indicates the number of hits indicating the number of times the keyword has been hit when searching for the actually extended program, the number of extended programs indicating the total number of actually extended programs, and the number of extended programs. It has an item with a hit rate indicating the number of keyword hits.

For example, in FIG. 13, five keywords of “extension”, “baseball”, “fallback”, “soccer” and “volleyball” are registered as keywords. There have been 100 extended programs so far, and each keyword has been hit 50 times for “extension”, 20 for “baseball”, 30 for “down”, 5 for “soccer”, and “volleyball”. Once. However, since “Volleyball” is registered after other keywords, the number of extended programs related to “Volleyball” is 50 times. The hit rate of each keyword is calculated by the following formula.
(Hit rate) = (Number of hits) / (Number of extended programs) (1)
Therefore, the hit rate for “extension” is 50%, the hit rate for “baseball” is 20%, the hit rate for “deferred” is 30%, the hit rate for “soccer” is 5%, “Volleyball” hit rate is 2%.

  FIG. 14 is a flowchart showing the hit rate table update process performed in step S52 of the flowchart shown in FIG. In the update process of the hit rate table, first, the keyword item in the extended program management table is checked for the program that has been played, and the number of hits in the hit rate table is set to 1 for the keyword included in this item. Add (step S61). Next, for all keywords, 1 is added to the number of extended programs in the hit rate table (step S62). Thereafter, the hit rate is calculated by the above equation (1) (step S63), and the process is terminated.

  The hard disk recorder according to the present invention can display the hit rate of each keyword. The user presses a “setting menu” button provided on the operation unit 22 or the remote controller 52, and selects a hit rate display item from the menu displayed on the display device 51, thereby displaying the hit rate of each keyword. 51 can be displayed.

  FIG. 15 is a flowchart showing the processing performed by the control unit 10 when displaying the keyword hit rate display of the hard disk recorder 1 according to the present invention. The control unit 10 checks whether or not the hit rate display item has been selected (step S71). If the item has not been selected (S71: NO), the control unit 10 waits until it is selected.

  When the hit rate display item is selected (S71: YES), the hit rate table is read from the extension information storage unit 21d of the memory 21 (step S72), and the hit rate for each keyword is obtained. Next, the five keywords are rearranged in descending order of the hit rate (step S73), a hit rate display screen is created and given to the selection unit 16 together with a hit rate display command, and the display unit 51 displays the hit rate. This is performed (step S74).

  FIG. 16 is a display example of the keyword hit rate displayed by the hard disk recorder 1 according to the present invention. The five keywords are displayed side by side from top to bottom in descending order of hit rate. At this time, the keyword with the highest hit rate is displayed with thicker characters than the other keywords, and the keyword with the lowest hit rate is displayed with thinner characters than the other keywords. As a result, it is possible to highlight and display keywords with a high hit rate and high effectiveness and keywords with a low hit rate and low effectiveness.

  In the hard disk recorder 1 having the above configuration, the hit rate for each keyword is calculated and displayed to the user so that the user can determine the effectiveness of the keyword. Thus, by registering more effective keywords, it is possible to more reliably search for programs that may extend the broadcast time.

  In the present embodiment, the EPG storage unit 21a, the recording reservation storage unit 21b, the keyword storage unit 21c, and the extended information storage unit 21d are provided in the memory 21. However, the present invention is not limited to this. A configuration in which part or all of the storage unit is provided in the hard disk 19 may be employed. In addition, the recording reservation is set by selecting a program from the EPG program guide. However, the present invention is not limited to this, and the user sets the recording reservation by directly inputting the start time and the end time. It may be a configuration. Moreover, although the structure which can change the keyword of the keyword memory | storage part 21c was shown, the structure which cannot be changed may be sufficient.

  Further, in the flowcharts shown in FIGS. 5 and 6, the search performed in step S15 is a search target for a program broadcast on the same channel as the program related to the recording reservation. You may do it for. In addition, a search for a program that may be extended is performed when a recording reservation is set. However, the present invention is not limited to this. For example, when an EPG is acquired, the EPG is searched. The configuration may be performed in advance for all included programs.

  Further, in the keyword hit rate display shown in FIG. 16, a keyword with a high hit rate is displayed with thick characters and a keyword with a low hit rate is displayed with thin characters. However, the present invention is not limited to this. It may be configured to display in different colors according to the hit rate, or may be configured to display a keyword with a high hit rate by blinking. Other methods are used to highlight keywords according to the hit rate. The structure which performs this may be sufficient.

  Moreover, the display example shown in this embodiment is an example, and the present invention is not limited to this. In the present embodiment, the hard disk recorder 1 has been described as an example of the recording / reproducing apparatus. However, the present invention is not limited to this, and other recording / reproducing apparatuses such as a video tape recorder, a DVD recorder, or a Blu-ray recorder are used. It may be a recording / reproducing apparatus including a plurality of recording media.

It is a block diagram which shows the hardware constitutions of the hard disk recorder which concerns on this invention. It is a flowchart which shows the process which a control part performs when performing the keyword setting of the hard disk recorder which concerns on this invention. It is a display example of the keyword setting screen displayed by the hard disk recorder according to the present invention. It is a display example of the keyword setting screen displayed by the hard disk recorder according to the present invention. It is a flowchart which shows the process which a control part performs when setting the recording reservation of the hard disk recorder which concerns on this invention. It is a flowchart which shows the process which a control part performs when setting the recording reservation of the hard disk recorder which concerns on this invention. It is a display example of a program guide displayed by the hard disk recorder according to the present invention. It is a display example of the extension setting screen displayed by the hard disk recorder according to the present invention. It is a schematic diagram which shows the structure of the extended program management table which concerns on this invention. It is a display example of the reservation confirmation screen displayed by the hard disk recorder according to the present invention. It is explanatory drawing explaining the program extension determination method of the hard disk recorder which concerns on this invention. It is a flowchart which shows the process which a control part performs when performing the reproduction | regeneration processing of the hard disk recorder which concerns on this invention. It is a schematic diagram which shows the structure of the hit rate table of the hard disk recorder which concerns on this invention. It is a flowchart which shows the hit rate table update process performed in step S52 of the flowchart shown in FIG. It is a flowchart which shows the process which a control part performs when performing the hit rate display of the keyword of the hard disk recorder which concerns on this invention. It is a display example of the keyword hit rate displayed by the hard disk recorder according to the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hard disk recorder 10 Control part 11 Tuner 12 EPG acquisition part 13 D / A conversion part 14 Encoder 15 Output part 17 D / A conversion part 18 Decoder 19 Hard disk 20 Hard disk controller 21 Memory 21a EPG memory | storage part 21b Recording reservation memory | storage part 21c Keyword memory | storage Section 21d Extension information storage section 22 Operation section 23 Infrared light receiving section 32 Input window 34 Extension setting window 51 Display device 52 Remote control

Claims (7)

Receiving means for receiving a program to be broadcast; means for obtaining program information relating to a program received by the receiving means; means for storing a plurality of keywords for determining the possibility of extending the broadcast time of the program; Search means for searching for program containing the stored keyword from program information; recording means for recording the program received by the receiving means; means for accepting recording reservation of a program including recording time by the recording means; In a recording / playback apparatus comprising playback means for playing back a program,
First determination means for determining a program whose broadcast time may be changed among programs related to recording reservation based on a search result of the search means;
Changing means for changing the recording time related to the recording reservation according to the determination result of the first determining means;
Second determining means for determining whether or not the program related to the recording reservation changed by the changing means is broadcast at a changed time;
When the first determination unit determines the program with respect to the number of programs determined to have been broadcast with the time changed by the second determination unit, Calculating means for calculating a keyword hit rate indicating the number of hits corresponding to each keyword in the program information of the program as a search result;
A recording / reproducing apparatus comprising: a display processing unit configured to display a calculation result of the calculation unit.   The recording / reproducing apparatus according to claim 1, further comprising a keyword receiving unit that receives a keyword to be stored. 3. The recording / reproducing apparatus according to claim 1 , wherein the display processing unit displays a plurality of keywords side by side in the order of the hit rates calculated by the calculation unit. It said display processing means, depending on the hit rate of the calculation unit is calculated, the recording and reproducing apparatus according to any one of claims 1 to 3 which are so as to differ the display of keywords. The first determining unit determines that the program related to the recording reservation is a program whose broadcast time may be changed when the program related to the recording reservation is included in the program searched by the searching unit. recording and reproducing apparatus according to any one of claims 4 to claim 1 are as. The first determination means includes a program that is broadcast in a time zone before the program related to the recording reservation and broadcast on the same channel as the program related to the recording reservation, and is included in the program searched by the searching means recording and reproducing apparatus according to case, any one of claims 1 to 5 in which the broadcast time program are to be determined program is subject to change according to the recording reservation are. The changing means is configured to delay the end time related to the recording reservation by a predetermined time,
When the recorded program is played back, the second determination means checks whether or not the part delayed by the changing means is played back, and if it is played back, the program is extended and broadcast. or delayed recording and reproducing apparatus according to any one of claims 1 to 6 that is to be determined to be broadcast.

Images