JP2005252586A - Picture recording/reproducing machine, picture recording/reproducing system and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve efficient reproduction for a viewer by reproducing a highlight scene corresponding to a keyword in a recorded program in a recording/reproducing machine where a digital broadcast is recorded and reproduced. <P>SOLUTION: Program data of the program included in the digital television broadcast received from a broadcast station 800 is recorded. A reception program keyword list 920 storing the keyword on a broadcast content in a time band is received from a service company server 900 on a plurality of time bands obtained by dividing the broadcast of the program by the time band. A video and voice in the time band corresponding to the keyword satisfying a prescribed condition is reproduced among the keywords stored in received reception program keyword list 920. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a recording / reproducing device, a recording / reproducing system, and a program.

  Currently, in digital television broadcasting, BS digital television broadcasting using BS (Broadcasting Satellite) and CS digital television broadcasting using CS (Communication Satellite) are widespread. Also, terrestrial digital television broadcasting started in December 2003, and is in the transitional stage from terrestrial analog television broadcasting to terrestrial digital television broadcasting. In terrestrial digital television broadcasting, an OFDM (Orthogonal Frequency Division Multiplexing) method is used as a modulation method, and multiple radio waves (specifically, video, audio, data broadcasting, etc.) are multiplexed. Have been sent.

It is known that an electronic program guide is displayed using a data broadcast included in a digital television broadcast. The user can easily make a recording reservation while looking at the electronic program guide. Furthermore, an invention is known in which a user registers a desired keyword to automatically select and record a program including the keyword from an electronic program guide (see, for example, Patent Document 1). Recently, a DVD-RAM using a DVD (Digital Versatile Disk) standard and a large-capacity recording / playback device using a hard disk are being sold as a storage device of the recording / playback device, and without worrying about the recording time. It is possible to record easily.
JP 2001-326925 A

  However, a viewer can easily record a program based on an electronic program guide, or a program including a keyword can be automatically recorded, so that many programs are recorded in the storage device of the recorder / player. . In particular, in a recording / reproducing machine with a built-in large-capacity storage device such as a hard disk, a program for several hundred hours can be recorded only by the main body, so that a state in which a large number of programs are recorded and accumulated is noticed. .

  However, when the viewer actually watches, physical time is required. For example, if a 10-hour program is recorded, it takes 10 hours of viewing time even when the viewer views the entire program. Therefore, all the recorded programs cannot be viewed due to physical time constraints, and must be deleted to record the next program.

  In particular, in the case of sports programs such as professional baseball broadcast programs and soccer broadcast programs, it is not necessary to watch all the scenes, such as scenes that hit a home run, scenes that shot, etc. , There was a request to efficiently watch mainly the highlight scenes that show up in the program. Further, there has been a demand for watching only a scene of a singer that the viewer is interested in in a song program or the like.

  In addition, methods using techniques such as double-speed playback and fast-forward are known, but these are merely techniques for shortening the viewing time of the entire video, and as a result, it is necessary to view all the programs, which is efficient. It wasn't.

  Therefore, in view of the above problems, the present invention is efficient for viewers by playing back a highlight scene associated with a keyword in a recorded program in a recording / playback device that records and plays back a digital broadcast. The goal is to achieve good playback.

In order to solve the above problems, the recording / playback device of the invention described in claim 1
Receiving means for receiving digital television broadcast (for example, the TV section 50 in FIG. 3);
Recording means (for example, the hard disk 40 of FIG. 3; program data 402) for recording the video and audio of the channel selection program included in the digital television broadcast received by the receiving means;
Keyword storage means (for example, hard disk 40 in FIG. 3; program keyword list 404) for storing a keyword related to the broadcast contents in the time zone for each of a plurality of time zones obtained by dividing the broadcast of the selected program by time zone;
Of the keywords stored in the keyword storage means, reproduction control means (for example, CPU 10 in FIG. 8 step S112),
It is characterized by providing.

Moreover, the program of the invention described in claim 7 is:
In the computer of the apparatus comprising a receiving means (for example, the TV section 50 in FIG. 3) for receiving a digital television broadcast and a computer,
A recording function (for example, the hard disk 40 of FIG. 3; program data 402) for recording video and audio of a channel selection program included in the digital television broadcast received by the receiving means;
A keyword storage function (for example, hard disk 40 in FIG. 3; program keyword list 404) for storing a keyword related to the broadcast content in the time zone for each of a plurality of time zones in which the broadcast of the selected program is divided by time zone;
Among the keywords stored by the keyword storage function, a playback control function (for example, the CPU 10 in FIG. 3; FIG. 3) performs control for reading out and playing back video and audio in a time zone corresponding to a keyword that satisfies a predetermined condition. 8 step S112),
It is characterized by realizing.

  According to the first or seventh aspect of the present invention, for each of a plurality of time zones obtained by dividing the broadcast of the video and audio of the selected program (hereinafter simply referred to as “program”) by time zone, Of the keywords related to the broadcast contents, video and audio in a time zone corresponding to a keyword satisfying a predetermined condition can be reproduced. Therefore, when video and audio are played back, only the part that satisfies the predetermined condition can be played back, so that it can be viewed in a short time.

According to a second aspect of the present invention, there is provided a recording / reproducing apparatus according to the first aspect,
A part or all of keywords and a time zone corresponding to the keyword are acquired from a server system that stores keywords for each time zone in which the broadcast of the selected program is divided by time zone, and stored in the keyword storage unit It is further characterized by further comprising keyword acquisition control means (for example, CPU 10 in FIG. 3; step S304 in FIG. 10).

  According to the second aspect of the present invention, a part or all of keywords and a time zone corresponding to the keyword are acquired from the server system that stores the keyword for each time zone in which the program broadcast is divided by the time zone. Then, it is possible to reproduce the video and audio in the time zone corresponding to the acquired keyword. Therefore, the time zone according to the keyword required by the viewer can be acquired from the server.

The invention according to claim 3 is the recording / playback device according to claim 1 or 2,
Further comprising selection means (for example, CPU 10 in FIG. 3; steps S406 and 408 in FIG. 11) for selecting a keyword from the keywords stored in the keyword storage means according to a user operation,
The reproduction control means is means (for example, CPU 10 in FIG. 3; step S112 in FIG. 8) for reproducing video and audio in a time zone corresponding to the keyword selected by the selection means as the predetermined condition. ,
It is characterized by that.

  According to the third aspect of the present invention, it is possible to reproduce the video and audio in the time zone corresponding to the keyword selected by the selection means as the predetermined condition. Therefore, when the user selects a keyword, the desired video and audio can be reproduced.

The invention according to claim 4 is the recording / playback device according to any one of claims 1 to 3,
The reproduction control means includes reproduction order determination means (for example, the CPU 10 in FIG. 3; step S412 in FIG. 11) that determines the order of reproduction time zones based on the number of keywords that satisfy the predetermined condition. And

  According to the fourth aspect of the present invention, it is possible to determine the order of the time periods to be reproduced based on the number of keywords that satisfy the predetermined condition, and to reproduce the video and audio in the time periods corresponding to the keywords. Accordingly, the order of time periods to be reproduced can be changed according to the number of keywords included, and video and audio in a time period in which more keywords are included can be preferentially reproduced.

The invention according to claim 5 is the recording / playback device according to any one of claims 1 to 4,
The reproduction control means reads and reproduces video and audio from the recording means in a time zone corresponding to a keyword satisfying the predetermined condition, and a time period in which the number of keywords satisfying the predetermined condition satisfies a predetermined frequency condition. Frequency reference reproduction control means (for example, CPU 10 in FIG. 3; steps S506 and S508 in FIG. 12).

  According to the fifth aspect of the present invention, video and audio in a time zone corresponding to a keyword satisfying a predetermined condition and in which the number of keywords satisfying the predetermined condition satisfies a predetermined frequency condition are sequentially reproduced. Can do. Therefore, when there are many time zones corresponding to keywords that satisfy the predetermined condition, it is possible to reproduce only the time zones that satisfy the frequency condition.

The recording / playback system of the invention described in claim 6 is:
A video recording / reproducing device (for example, the video recording / reproducing device 1 in FIG. 1) that receives digital TV broadcast and records and reproduces video and audio can be connected to a server system (for example, the service company server 900 in FIG. 1). A recording / playback system configured in
The server system is
Storage means (for example, service company server 900 in FIG. 1) for storing a keyword for each time zone obtained by dividing the digital television broadcast by time zone;
Selection means (for example, the service company server 900 in FIG. 1) for selecting a keyword from keywords stored in the storage means in accordance with a selection instruction signal received from the recording / playback device;
Transmitting means (for example, the service company server 900 in FIG. 1) for transmitting the keyword selected by the selecting means and the data of the time zone corresponding to the keyword to the recording / playback device;
With
The recording / playback machine includes:
Selection instruction signal transmission means (for example, CPU 10 in FIG. 3; step S208 in FIG. 9) for transmitting a selection instruction signal for selecting a keyword to the server system;
Receiving means (for example, CPU 10 in FIG. 3; step S300 in FIG. 10) for receiving a keyword and data of a time zone corresponding to the keyword from the server system;
Of the keywords received by the receiving means, reproduction control means for controlling to read out and reproduce video and audio in a time zone corresponding to a keyword satisfying a predetermined condition from the recorded video and audio (for example, FIG. 3). CPU 10; steps S506 and S508 in FIG.
It is characterized by providing.

  According to the sixth aspect of the present invention, the recording / playback device receives a keyword and data of a time zone corresponding to the keyword from the server, and corresponds to a keyword that satisfies a predetermined condition based on the received keyword. Only the video and audio in the time zone can be played back.

  According to invention of Claim 1 or 7, it corresponds to the keyword which satisfy | fills predetermined conditions among the keywords regarding the said broadcast content in the said time slot | zone about each of several time slot | zones which divided the broadcast of the channel selection program by the time slot | zone. It is possible to play back video and audio during the time zone. Therefore, when video and audio are played back, only the part that satisfies the predetermined condition can be played back, so that it can be viewed in a short time.

  According to the second aspect of the present invention, from the server system that stores the keyword for each time zone in which the broadcast of the selected program is divided by the time zone, a part or all of the keyword and the time zone corresponding to the keyword And the video and audio in the time zone corresponding to the acquired keyword can be reproduced. Therefore, the time zone according to the keyword required by the viewer can be acquired from the server.

  According to the third aspect of the present invention, it is possible to reproduce the video and audio in the time zone corresponding to the keyword selected by the selection means as the predetermined condition. Therefore, when the user selects a keyword, the desired video and audio can be reproduced.

  According to the fourth aspect of the present invention, it is possible to determine the order of the time periods to be reproduced based on the number of keywords that satisfy the predetermined condition, and to reproduce the video and audio in the time periods corresponding to the keywords. Therefore, it is possible to change the order of time periods to be reproduced according to the number of keywords included, and to preferentially reproduce video and audio in a time period that includes more keywords. .

  According to the fifth aspect of the present invention, video and audio in a time zone corresponding to a keyword satisfying a predetermined condition and in which the number of keywords satisfying the predetermined condition satisfies a predetermined frequency condition are sequentially reproduced. Can do. Therefore, when there are many time zones corresponding to keywords that satisfy the predetermined condition, it is possible to reproduce only the time zones that satisfy the frequency condition.

  According to the sixth aspect of the present invention, the recording / playback device receives a keyword and data of a time zone corresponding to the keyword from the server, and corresponds to a keyword that satisfies a predetermined condition based on the received keyword. Only the video and audio in the time zone can be played back.

  The best mode for carrying out the present invention will be described below with reference to the drawings. In the following, the case where the present invention is applied to a recording / reproducing device that receives terrestrial digital television broadcasting will be described, but the application of the present invention is not limited to this.

[1. Constitution]
FIG. 1 is a schematic diagram showing the entire system including a recording / playback device 1, a broadcasting station 800, and a service company server 900. The recording / reproducing device 1 receives a digital television broadcast including program data 810 and an electronic program guide 820 from the broadcast station 800. Further, the service company server 900 receives a digital television broadcast including the program data 830 and the electronic program guide 840 from the broadcast station 800. The recording / playback device 1 and the service company server 900 are connected via a network 3. Here, it is assumed that the network 3 is constructed by a known network such as a network constructed by TCP / IP such as the Internet or a network that is dial-up connected by an ISDN line or the like.

  Here, the recording / reproducing apparatus 1 transmits a transmission mail 910 including a program keyword list request table 304 described later to the service company server 900. Then, the service company server 900 generates a received program keyword list 920 from the program keyword list request table 304 included in the received transmission mail 910 and transmits it to the recording / reproducing apparatus 1. The received program keyword list 920 has the same configuration as a program keyword list 404 described later.

  Next, the recording / reproducing apparatus 1 will be described in detail. FIG. 2 is a schematic view of the recording / reproducing device 1 and a monitor 70 connected to the recording / reproducing device 1 via a connection cable 70a. FIG. 3 is a block diagram of the recording / reproducing apparatus 1. As shown in FIG. 3, the recording / playback device 1 includes a CPU (Central Processing Unit) 10, a ROM (Read Only Memory) 20, a RAM (Random Access Memory) 30, a hard disk 40, a television unit 50, and an output. Unit 60, input unit 80, recording device 82, and communication device 84, and monitor 70 and antenna 58 are connected to each other.

[1.1 Storage area]
The ROM 20 is a read-only memory that stores an initial program for performing various initial settings, hardware inspections, loading of necessary programs, and the like. The CPU 10 sets the operating environment of the recording / reproducing device 1 by executing this initial program when the recording / reproducing device 1 is turned on.

  In addition, the ROM 20 stores various programs relating to the operation of the recording / reproducing apparatus 1 such as menu display processing, various setting processes, television image display processing, etc., programs for realizing various functions provided in the recording / reproducing apparatus 1, and the like. In addition, a main program 202, a recording reservation program 204, a program keyword list reception program 206, a setting program 208, and a reproduction program 210 are stored.

  The RAM 30 is a memory that can be written at any time to temporarily hold various programs executed by the CPU 10, data related to the execution of these programs, and the like. In the present embodiment, areas for storing the electronic program guide 302, the program keyword list request table 304, the setting information storage area 306, and the reproduction keyword group storage area 308 are secured.

  The electronic program guide 302 is an area for storing a digital broadcast program guide (a list of contents to be broadcast). The CPU 10 separates the data of the electronic program guide 820 included in the digital broadcast transmitted from the broadcasting station 800 and stores the data in the RAM 30 as the electronic program guide 302. Here, since the electronic program guide itself is publicly known, detailed description thereof is omitted.

  The program keyword list request table 304 is a table transmitted from the recording / reproducing device 1 when requesting a program keyword list to the service company server 900. FIG. 4 is a diagram illustrating an example of a data configuration of the program keyword list request table 304. As shown in the figure, the program keyword list request table 304 includes items such as a user ID (for example, “1200354”), a title (for example, “soccer relay”), a channel (for example, “4”), a date, and the like. (For example, “2004/02/01”), program start time (for example, “19:00”), program end time (for example, “21:00”), and keyword level (for example, “1”) And a specific keyword list (for example, "goal, shoot, team A ...") is stored. In the following, the user ID, title, channel, date, program start time, and program end time are collectively referred to as “program information” as appropriate.

  Here, items included in the program keyword list request table 304 will be briefly described. First, the user ID is a uniquely defined key for specifying the user. The service company server 900 identifies the viewer (user of the recording / reproducing device 1) by referring to the user ID. The title, channel, date, program start time, and program end time store the contents corresponding to the program reserved for recording in the recording reservation process. The keyword level is the level of the keyword requested by the viewer.

  Here, the keyword level is determined according to the stage requested by the user. For example, in the case of a keyword of a soccer program, a general keyword (for example, “goal, shoot”, etc.) is stored when the level is “1”. A keyword for a person (for example, “through pass, intercept”, etc.) is stored, and the keyword is determined according to the level. In the present embodiment, the keyword level and the correspondence relationship between the keywords are described as being stored in the service company server 900, but the present invention is not limited to this.

  The setting information storage area 306 is an area in which information such as settings relating to the recording / reproducing apparatus 1 is stored. FIG. 5 is a diagram illustrating an example of the data configuration of the setting information storage area 306. As shown in the figure, in the setting information storage area 306, a playback mode (for example, “full playback”), a playback flag (for example, “ON”), a playback group (for example, “highlight”), and playback A keyword and a match determination keyword are stored.

  Here, details of each item will be described later, but their contents will be briefly described. The playback mode is a value that is referred to when the recording / playback device 1 plays back program data, and is set in the setting process. The reproduction flag is a flag for determining whether or not the recording / reproducing apparatus 1 is reproducing the program data 402 and is represented by “ON” and “OFF”. The playback group stores a group name that is referenced when the playback mode is stored as “group playback”, and the playback keyword stores a keyword that is referenced when the playback mode is stored as “keyword playback”. ing. The match determination keyword stores a match determination keyword to be directly compared when the CPU 10 reproduces program data.

  The reproduction keyword group storage area 308 is an area in which keywords belonging to each reproduction keyword group are stored in association with each other. FIG. 6 is a diagram showing an example of the data configuration of the reproduction keyword group storage area 308. As shown in FIG. As shown in the figure, the reproduction keyword group storage area 308 stores a group name (for example, “Team A”) and a keyword (for example, “Team A, Player X, Player Y, Manager O”) in association with each other. doing. In this embodiment, the group name and the keyword are described as being stored in association with each other. However, the keyword is set by, for example, a user input or received from the service company server 900. It may be set by using an extracted keyword extracted from the program keyword list 404.

  The hard disk 40 stores programs and data files used in the recording / reproducing apparatus 1. In the present embodiment, recorded data 400 and a candidate keyword storage area 406 are stored.

  Recorded data 400 is an area in which program data 402 and program keyword list 404 are stored in association with each other. The CPU 10 stores the digital broadcast program data 810 received from the broadcast station 800 as the program data 402 of the hard disk 40. When receiving the received program keyword list 920 from the service company server 900, the CPU 10 stores it as the program keyword list 404 of the hard disk 40. The program data 402 and the program keyword list 404 are stored together as recorded data 400.

  The program data 402 is data in which the contents of digital television broadcast programs (contents) are stored. Here, the storage format of the program data 402 is one of known moving image formats such as MPEG (Moving Picture Experts Group) format and AVI (Audio-Video Interleaved file) format.

  The program keyword list 404 is data in which the time zone of program data and keywords are stored in association with each other, and the received program keyword list 920 received from the service company server 900 is stored. FIG. 7 is a diagram illustrating an example of a data configuration of the program keyword list 404. The program keyword list 404 stores program information, information on all keyword scenes transmitted this time, and information on each keyword scene.

  Here, the program information includes a user ID (for example, “1200354”), a date (for example, “2004/02/01”), a title (for example, “soccer relay”), and a channel (for example, “4”). ”), A program start time (for example,“ 19:00 ”), and a program end time (for example,“ 21:00 ”) are stored.

  In addition, for all keyword scenes transmitted this time, an index number (for example, “1”), a keyword scene total time (for example, “0:50:10”), an extracted keyword total (for example, “150”), The extracted keyword level (for example, “1”), the extracted keyword list (for example, “goal, shoot ...”), and the extracted keyword appearance count (for example, “goal 3 times, shoot 10 times”) are stored. Yes.

  Further, each keyword scene stores a start time (for example, “19:00:00”) and an end time (for example, “19:00:15”) as the time zone of the keyword scene, Further, the number of keywords by scene (for example, “2”) included in the scene and the keyword list by scene (for example, “program start, game start”) are stored.

  Here, each item will be briefly described. First, the program information is the same as the program information stored in the program keyword list request table 304, and is information for identifying the keyword list corresponding to which program data.

  Subsequently, items included in the information of all keyword scenes transmitted this time will be described. The index number is information for identifying the number of keyword lists in the same program. The CPU 10 can determine which keyword list of the received program keyword list 920 and the program keyword list 404 is newer by referring to the index number. The keyword scene total time represents a total time obtained by adding the respective times when each keyword scene is reproduced. The extracted keyword total is a total of how many extracted keywords are stored. The extracted keyword level represents the level of the extracted keyword and is the same as the keyword level stored in the program keyword list request table 304. The number of extracted keyword appearances indicates how many times the number of extractions has appeared as the frequency information of the extracted keywords.

  Further, items included in each keyword scene will be described. The start time and end time are the time at which the time zone of the keyword scene starts and the time at which it ends. The number of keywords by scene is the number of keywords by scene included in the keyword scene. The keyword list by scene is a list of keywords included in the keyword scene.

  The candidate keyword storage area 406 is an area for storing candidate keywords. A candidate keyword is a keyword that is a candidate to be selected when the viewer inputs the keyword. For example, the CPU 10 stores keywords included in the program keyword list 404 as candidate keywords in the candidate keyword storage area 406.

[1.2 CPU]
The CPU 10 is a central processing unit that executes processing based on a predetermined program in accordance with an input instruction and transfers instructions and data to each functional unit. Specifically, the CPU 10 reads a program stored in the ROM 20 in accordance with an operation signal input from the input unit 80, and executes processing according to the program. Then, a display control signal is appropriately output to the video output unit 64 to display the processing result on the monitor 70.

  Further, in the present embodiment, the CPU 10 executes main processing (see FIG. 8) according to the main program 202 stored in the ROM 20, and in this main processing, reads the recording reservation program 204 to record recording processing ( 9), the program keyword list reception program 206 is read and the program keyword list reception process (see FIG. 10) is read, the setting program 208 is read and the setting process (see FIG. 11) is read, and the playback program 210 is read and played back. (See FIG. 12) are executed as subroutines.

  Specifically, the CPU 10 executes an initialization process and a recording reservation process in the main process. Then, the CPU 10 executes a recording process when the current time is a recording reservation time. Further, the CPU 10 executes a program keyword list reception process, a setting process, and a reproduction process, and after executing other processes, repeats the process from the recording reservation process again.

  In addition, in the recording reservation process, the CPU 10 inputs a keyword level and a specific keyword when a viewer makes a reservation for recording a predetermined program (hereinafter referred to as “recording reservation” as appropriate). Then, a program keyword list request table 304 is created together with information on programs reserved for recording, and transmitted to the service company server 900 as a transmission mail.

  Further, when receiving the received program keyword list 920 in the program keyword list receiving process, the CPU 10 determines whether or not the same program information as the program information in the received program keyword list 920 is stored in the program keyword list 404. judge. If the same program information as the received program keyword list 920 is not stored in the program keyword list 404, the CPU 10 stores the received program keyword list 920 as the program keyword list 404 in the hard disk 40. On the other hand, when the same program information is already stored in the program keyword list 404, the CPU 10 compares the index number of the received program keyword list 920 with the index number of the program keyword list 404. If the index number stored in the received program keyword list 920 is larger than the index number stored in the program keyword list 404, the program keyword list 404 is updated and stored in the received program keyword list 920. . Then, the CPU 10 stores the extracted keywords included in the program keyword list 404 in the candidate keyword storage area 406 as candidate keywords.

  Further, the CPU 10 causes the viewer to select a playback mode when the setting switch 80c is pressed in the setting process. Then, the CPU 10 determines a match determination keyword according to the reproduction mode and stores it in the setting information storage area 306.

  In the reproduction process, the CPU 10 reads the program keyword list 404 when the reproduction switch 80a is pressed when the reproduction flag is OFF. Then, the CPU 10 determines the playback position of the scene that matches the scene keyword list included in the program keyword list 404 and the match determination keyword stored in the setting information storage area 306, and sequentially plays back from the playback position.

[1.3 Television section]
The television unit 50 is a circuit block for receiving digital television broadcasting, and includes a tuner unit 52, an OFDM (Orthogonal Frequency Division Multiplexing) demodulation unit 54, and a decoder unit 56. Yes. Further, the tuner unit 52 is connected to the antenna 58.

  The tuner unit 52 receives an OFDM signal (modulated signal) having a frequency corresponding to a channel (broadcast station) designated by the user by tuning with the antenna 58.

  The OFDM demodulator 54 demodulates the OFDM signal input from the tuner unit 52. Specifically, the input OFDM signal is converted into a digital signal by AD (Analog to Digital) conversion, and then subjected to synchronization processing, FFT (Fast Fourier Transform) calculation, error correction processing, etc. To extract a TS (Transport Stream).

  The decoder unit 56 separates the video signal, the audio signal, and the data signal from the TS input from the OFDM demodulating unit 54, decodes the separated audio signal, outputs the decoded audio signal to the audio output unit 62, and decodes the video signal. (Decode) and output to the video output unit 64, and output the data signal to the CPU 10. Further, at the time of recording a program, the separated and decoded signals (video signal, audio signal and data signal) are output to the CPU 10. The audio signal and the video signal are encoded by a known encoding method such as MPEG, and the decoder unit 56 decodes the video signal and the audio signal by a method corresponding to each encoding method.

[1.4 Input / output section, etc.]
The output unit 60 displays various screens based on a display signal output from the CPU 10 and outputs video or audio output from the television unit 50. The output unit 60 includes an audio output unit 62 that outputs an audio signal and a video output unit 64 that outputs a video signal. The output unit 60 outputs the video signal and audio signal from the television unit 50 to the connected monitor 70.

  The monitor 70 is a display device with a built-in speaker. The audio signal output from the audio output unit 62 is output as sound, and the video signal output from the video output unit 64 is output as video. Here, the monitor 70 includes a CRT (Cathode Ray Tube), an LCD (Liquid Crystal Display) display, a plasma display, or the like.

  The input unit 80 is an input device provided with switches (buttons) necessary for inputting numerical values and characters, selecting functions, and the like, and outputs a signal of a pressed switch to the CPU 10. A control command input means for instructing execution of processing or the like is realized by input of a switch in the input unit 80.

  Here, referring to FIG. 2, the input unit 80 includes a reproduction switch 80a, a stop switch 80b, a setting switch 80c, and a recording reservation switch 80d. Here, when the reproduction switch 80 a is pressed, the CPU 10 reproduces the program data 402 stored in the hard disk 40. When the stop switch 80b is pressed, the CPU 10 stops the reproduction of the program data 402. Further, the setting process is executed when the setting switch 80c is pressed, and the recording reservation process is executed when the recording reservation switch 80d is pressed. The input unit 80 has been described as having various switches disposed in the recording / playback device 1, but the present invention is not limited thereto, and may be disposed in a transmitter such as a so-called remote controller. Of course it is good.

  The bus 90 is a line through which an electrical signal such as data from the CPU 10 passes, and the CPU 10, the ROM 20, the RAM 30, the hard disk 40, the television unit 50, the output unit 60, the input unit 80, and the recording device 82. , Signal lines for connecting the communication devices 84 respectively.

[1.5 Recording device, communication device]
The recording device 82 is a device that records the recording data 400 stored in the hard disk 40 on an external medium. Specifically, it is an apparatus capable of recording on media such as video tape, DVD + R, DVD-RAM, CD-R, Blu-ray Disc. Of course, an area for storing data may be secured on the hard disk 40 and the recorded data 400 may be stored.

  The communication device 84 is used by the recording / playback device 1 to transmit / receive data to / from the service company server 900 via the network 3. Specifically, it is composed of a modem, a LAN card and the like.

[2. Process flow]
[2.1 Main processing]
First, the main process will be described. FIG. 8 is a flowchart for explaining the operation of the recording / reproducing device 1 according to the main process. This main process is a process realized by the CPU 10 executing the main program 202 stored in the ROM 20.

  First, the CPU 10 executes an initialization process (step S100). In the initialization process, various devices and setting values are initialized, and the electronic program guide 820 is received from the broadcasting station 800 and stored in the RAM 30 as the electronic program guide 302.

  Subsequently, the CPU 10 executes a recording reservation process (step S102). If the current time is the scheduled recording time (step S104; Yes), the CPU 10 executes a recording process (step S106). Specifically, the CPU 10 sequentially stores the program data 810 received from the broadcast station 800 as the program data 402 on the hard disk 40.

  Then, the CPU 10 sequentially executes a program keyword list reception process (step S108), a setting process (step S110), and a reproduction process (step S112). As other processing, for example, when processing such as time adjustment and channel reception setting is executed (step S114), the CPU 10 repeatedly executes the processing from step S102.

[2.2 Scheduled recording process]
Next, the recording reservation process will be described. FIG. 9 is a flowchart for explaining the operation of the recording / reproducing device 1 according to the recording reservation process. This recording reservation process is a process realized by the CPU 10 executing the recording reservation program 204 stored in the ROM 20.

  The CPU 10 determines whether or not the program recording reservation has been completed (step S200). Here, the recording reservation method is as follows. That is, when the recording reservation process is selected by the viewer (user), the CPU 10 displays the electronic program guide 302 on the monitor 70. When the viewer (user) selects a program to reserve recording, the CPU 10 makes a recording reservation for the selected program. Specifically, the CPU 10 selects the program title (for example, “soccer broadcast”), the channel (for example, “4”), the date (for example, “2004/02/01”), the program selected by the user, The recording reservation is completed by storing the start time (for example, “19:00”) and the program end time (for example, “21:00”) in the program keyword list request table 304.

  If it is determined that the recording reservation has not been completed (step S200; No), the CPU 10 ends the recording reservation process and returns the process to the main process.

  On the other hand, when the recording reservation is completed (step S200; Yes), the CPU 10 inputs a keyword level (step S202). Then, the CPU 10 stores the input keyword level in the program keyword list request table 304.

  Subsequently, the CPU 10 inputs a specific keyword, and stores the input specific keyword in the program keyword list request table 304 (step S204). Here, as a method of inputting the specific keyword, a method of directly inputting from the key input may be used, or a method of selecting from the candidate keywords stored in the candidate keyword storage area 406 may be used.

  Subsequently, the CPU 10 creates a transmission mail based on the program keyword list request table 304 (step S206), and transmits the mail to the service company server 900 (step S208).

  Here, in the recording reservation process, the program keyword list request table 304 has been described as being transmitted by e-mail. However, the present invention is not limited to this, and other methods are used to transmit / receive data to / from the service company server 900. Of course, it may be. For example, a method of transmitting data to the server using FTP (File Transfer Protocol) or a method of transmitting using HTTP (HyperText Transfer Protocol) may be used.

[2.3 Program Keyword List Reception Processing]
Next, program keyword list reception processing will be described. FIG. 10 is a flowchart for explaining the operation of the recording / reproducing apparatus 1 according to the program keyword list receiving process. This program keyword list reception process is a process realized by the CPU 10 executing the program keyword list reception program 206 stored in the ROM 20.

  First, the CPU 10 determines whether or not the received program keyword list 920 has been received. If the received program keyword list 920 has not been received (step S300; No), the CPU 10 ends the program keyword list receiving process and returns the process to the main process.

  When the received program keyword list 920 is received (step S300; Yes), the CPU 10 determines whether or not the program keyword list 404 of the same program is stored in the hard disk (step S302). Specifically, the CPU 10 determines whether the program information in the received program keyword list 920 and the program information stored in the program keyword list 404 stored in the hard disk 40 are the same.

  Here, when the same program information as the program information in the received program keyword list 920 is not stored in the program keyword list 404 (step S302; No), the CPU 10 uses the received received program keyword list 920 in the program keyword list. 404 is replaced (step S304).

  On the other hand, when the same program information as the program information of the received program keyword list 920 is stored in the program keyword list 404 (step S302; Yes), the CPU 10 determines the index number of the received program keyword list 920 and the program keyword list. The index number of 404 is compared, and it is determined whether or not the index number of the received program keyword list 920 is larger (step S306). If the index number of the received program keyword list 920 is larger than the index number of the program keyword list 404 (step S306; Yes), the CPU 10 replaces the program keyword list 404 with the received program keyword list 920 (step S308). ).

  Next, the CPU 10 accumulates and stores the extracted keywords included in the program keyword list 404 as candidate keywords in the candidate keyword storage area 406 (step S310). Then, the CPU 10 ends the program keyword list reception process and returns the process to the main process.

[2.4 Setting process]
Next, the setting process will be described. FIG. 11 is a flowchart for explaining the operation of the recording / reproducing apparatus 1 according to the setting process. This setting process is a process realized by the CPU 10 executing the setting program 208 stored in the ROM 20.

  First, the CPU 10 determines whether or not the setting switch 80c has been pressed (step S400). If the setting switch 80c is pressed (step S400; Yes), the viewer is made to select a playback mode (step S402).

  When “keyword playback” is selected as the playback mode (step S404; keyword playback), the CPU 10 causes the viewer to select a playback keyword and stores the selected playback keyword in the setting information storage area 306. Store (step S406). When “group playback” is selected as the playback mode (step S404; group playback), the CPU 10 causes the viewer to select a playback group and stores the selected playback group in the setting information storage area 306. To do.

  Subsequently, the CPU 10 determines whether or not to use the number of appearances (appearance frequency) (step S410). If the setting is such that the number of appearances is not used (step S410; No), the CPU 10 determines a match determination keyword and stores it in the setting information storage area 306 (step S414).

  The following method can be considered as a method for determining the match determination keyword. First, the CPU 10 reads the playback mode from the setting information storage area 306. If the playback mode is “play all”, the CPU 10 stores the extracted keyword stored in the program keyword list 404 as it is as a match determination keyword in the setting information storage area 306. When the playback mode is “keyword playback”, the CPU 10 stores the playback keyword stored in the setting information storage area 306 as a match determination keyword. Furthermore, when the playback mode is “group playback”, the CPU 10 reads the playback group stored in the setting information storage area 306. Then, the keyword corresponding to the read reproduction group is read from the reproduction keyword group storage area 308 and stored as a match determination keyword.

  If the setting is to use the number of appearances (step S410; Yes), match determination keywords are determined in the order of the most appearances and stored in the setting information storage area 306 (step S412).

  When the process is completed, the CPU 10 ends the setting process and returns the process to the main process.

[2.5 Playback processing]
Next, the reproduction process will be described. FIG. 12 is a flowchart for explaining the operation of the recording / reproducing device 1 related to the reproduction process. This reproduction process is a process realized by the CPU 10 executing the reproduction program 210 stored in the ROM 20.

  First, the CPU 10 determines whether or not the reproduction flag stored in the setting information storage area 306 is ON (step S500). If the regeneration flag is OFF (step S500; No), the CPU 10 determines whether or not the regeneration switch 80a has been pressed (step S502). If the playback switch 80a is pressed (step S502; Yes), the CPU 10 reads the program keyword list 404 (step S504). Subsequently, the CPU 10 reads the start time of the keyword scene that matches the match determination keyword stored in the setting information storage area 306 and the keyword for each scene stored in the program keyword list 404 and determines it as a playback position ( Step S506). Then, the CPU 10 starts reproduction from the determined reproduction position (step S508), and turns on the reproduction flag stored in the setting information storage area 306 (step S510).

  On the other hand, when the regeneration flag is ON (step S500; Yes), the CPU 10 determines whether or not the stop switch 80b is pressed (step S520). If the stop switch S520 has not been pressed (step S520; No), the CPU 10 proceeds with the reproduction process (step S522). If it is not the position of the end time of the keyword scene (step S524; No), the CPU 10 returns the process to the main process.

  On the other hand, when the reproduction position is the position of the end time of the keyword-specific scene (step S524; Yes), the CPU 10 determines whether or not the keyword scene is the final keyword scene (step S526). If the current playback position is not the final keyword scene (step S526; No), the start time of the next keyword scene is read and the playback position is determined (step S532).

  When the stop switch 80b is pressed (step S520; Yes), or when the keyword scene being reproduced is the final keyword scene (step S526; Yes), the CPU 10 ends the reproduction (step S528). ), And stores the reproduction flag as OFF (step S530).

[3. Example of operation]
Next, the operation of the recording / reproducing apparatus 1 will be described with reference to the drawings. FIG. 13 is a diagram showing an example when the electronic program guide 302 is displayed on the monitor 70 as the display screen W100. The CPU 10 displays a date area R100 representing the recording date on the display screen W100. When the date “1 day (day)” is selected by the user, an identification display M100 is attached, and an electronic program guide R102 representing the contents of the TV program “1 day (day)” in a table format on the right side of the screen. Is displayed. When the program “soccer relay” is selected by the user, the CPU 10 selects the title “soccer relay”, the channel “4”, the date “2004/02/01” of the selected program, and the start time “ “19:00” and end time “21:00” are stored in the program keyword list request table 304.

  FIG. 14 is a diagram showing an example in which the recording reservation screen displayed after the program is selected in FIG. 13 is displayed on the monitor 70 as the display screen W200. The CPU 10 displays the recording date, channel, recording start time, and end time included in the selected program in the region R200. Subsequently, the CPU 10 causes the keyword level to be input in the region R202 (step S202 in FIG. 9). Further, in order to select a specific keyword, the CPU 10 displays the candidate keyword stored in the candidate keyword storage area 406 in the area R204. When a specific keyword is selected by the viewer (user), the CPU 10 performs a special display T1 and stores it in the program keyword list request table 304 (step S204 in FIG. 9).

  FIG. 15 is a diagram showing an example of a display screen W300 displayed on the monitor 70 in the setting process. The CPU 10 displays a display for selecting the reproduction mode in the region R300 and a display for selecting whether or not to use the number of appearances in the region R320. The CPU 10 performs a display in the region R300 for selecting all playback (mark M300), keyword playback (mark M302), and group playback (mark M304) as playback modes. When all playback is selected by the user (button B300), the CPU 10 stores “play all” in the playback mode of the setting information storage area 306.

  Further, the CPU 10 displays ON (mark M320) and OFF (mark M322) to select whether or not to display the region R320 that has a large number of appearances. When the user selects OFF (button B320), the CPU 10 executes step S414 in FIG.

  FIG. 16 is a conceptual diagram for explaining a state of an actual video. The video E100 is the content stored in the program data 402. In the case of this figure, the program “soccer relay” is stored for 2 hours from 19:00. Here, it is determined that the keyword scenes that match the match determination keyword are the scene G100, the scene G102, and the scene G104.

  Video E200 is a conceptual diagram for explaining a state of being displayed on monitor 70. The CPU 10 extracts a keyword scene that matches the match determination keyword, and sequentially reproduces the scene G200, the scene G202, and the scene G204.

  Therefore, the user does not need to reproduce all the program data 402, and can only view a scene that matches the set keyword.

  As described above, according to the present embodiment, the recording / reproducing apparatus 1 that records and reproduces a digital broadcast reproduces the keyword scene associated with the keyword in the recorded program, thereby improving the efficiency of the viewer. Good reproduction can be realized.

[4. Modified example]
In the above-described embodiment, the recording / reproducing apparatus has been described as receiving terrestrial digital television broadcasts. However, the present invention is not limited to this. For example, the present invention can be similarly applied to CS digital broadcasting and BS digital broadcasting. Furthermore, it goes without saying that these digital TV broadcasts can be applied in the same manner even when using cable TV, a program distribution service distributed via a network, a VOD (Video On Demand) service, or the like.

  Further, in the above-described embodiment, the recording / reproducing device is described as a so-called dedicated device used alone, but the recording / reproducing device of the present invention is not limited to such a product. For example, a computer that incorporates a receiving board for receiving digital video broadcasts in a computer to realize a recording / playback function, or a device that incorporates a digital broadcast receiving device into a PDA (Personal Digital Assistants), a mobile phone, or the like may be used. .

  Further, in the setting process, in the case of setting to use the number of appearances, it has been described that the match determination keywords are determined in descending order of the number of appearances. However, the present invention is not limited to this. For example, it matches a predetermined condition. It is also possible to determine the match determination keyword only on the basis of the extracted keyword whose appearance count is a predetermined number or more. In this case, the extracted keywords are extracted from the head more than a predetermined number of times, so that the playback order is the same as the time, especially in broadcasts (contents) where time progress is important, such as sports programs. Is valid.

  In the reproduction process, when a program is reproduced, the total keyword scene time stored in the program keyword list 404 may be displayed. By displaying the total time of the keyword scene, it is possible to more efficiently view the content by specifying a playback keyword, changing a playback group, or the like so that it is less than a desired time.

  In the present embodiment, the program data from the start time to the end time stored in the keyword scene is described as being played back. However, for example, playback is performed from 5 seconds before the start time to 5 seconds after the end time. For example, it may be reproduced including before and after the keyword scene. In this case, there is an effect that it is easy to grasp the content of the keyword scene by viewing before and after the keyword scene.

Overview of the entire system. Overview of recording / playback machine and monitor. The block diagram which shows the circuit structure of a video recording / reproducing machine. The figure which shows an example of a data structure of a program keyword list request | requirement table. The figure which shows an example of a data structure of a setting information storage area. The figure which shows an example of the data structure of a reproduction | regeneration keyword group storage area. The figure which shows an example of a data structure of a program keyword list. The figure which showed the operation | movement flow of the main process. The figure which showed the operation | movement flow of a video recording reservation process. The figure which showed the operation | movement flow of a program keyword list reception process. The figure which showed the operation | movement flow of the setting process. The figure which showed the operation | movement flow of reproduction | regeneration processing. The figure which showed the example of a screen in a video recording reservation process. The figure which showed the example of a screen in a video recording reservation process. The figure which showed the example of a screen in a setting process. The figure for demonstrating a mode that an image | video is reproduced | regenerated.

Explanation of symbols

1 Recording / playback machine 3 Network 10 CPU
20 ROM
202 Main program 204 Recording reservation program 206 Program keyword list reception program 208 Setting program 210 Playback program 30 RAM
302 Electronic Program Table 304 Program Keyword List Request Table 306 Setting Information Storage Area 308 Playback Keyword Group Storage Area 40 Hard Disk 400 Recorded Data 402 Program Data 404 Program Keyword List 406 Candidate Keyword Storage Area 50 Television Unit 52 Tuner Unit 54 OFDM Demodulation Unit 56 Decoder Unit 60 Output unit 62 Audio output unit 64 Video output unit 70 Monitor 80 Input unit 82 Storage device 84 Communication device 90 Bus 800 Broadcast station 810, 830 Program data 820, 840 Electronic program guide 900 Service company server 910 Send mail 920 Received program keyword list

Claims (7)

Receiving means for receiving digital television broadcasts;
Recording means for recording video and audio of a channel selection program included in the digital television broadcast received by the receiving means;
Keyword storage means for storing a keyword related to the broadcast content in the time zone for each of a plurality of time zones in which the broadcast of the selected program is divided by time zone;
Reproduction control means for performing control to read out and reproduce video and audio in a time zone corresponding to a keyword satisfying a predetermined condition from the keywords stored by the keyword storage means;
A recording / playback machine comprising:   A part or all of keywords and a time zone corresponding to the keyword are acquired from a server system that stores keywords for each time zone in which the broadcast of the selected program is divided by time zone, and stored in the keyword storage unit The video recording / playing device according to claim 1, further comprising: a keyword acquisition control unit for causing the video recording / playing device to operate. Selecting means for selecting a keyword according to a user operation from the keywords stored in the keyword storage means;
The reproduction control means is means for performing control to reproduce video and audio in a time zone corresponding to the keyword selected by the selection means as the predetermined condition.
The recording / reproducing apparatus according to claim 1 or 2, characterized in that   4. The reproduction control means according to claim 1, wherein the reproduction control means includes reproduction order determination means for determining an order of reproduction time zones based on the number of keywords satisfying the predetermined condition. 5. Recording and playback machine.   The reproduction control means reads and reproduces video and audio from the recording means in a time zone corresponding to a keyword satisfying the predetermined condition, and a time period in which the number of keywords satisfying the predetermined condition satisfies a predetermined frequency condition. 5. The recording / reproducing apparatus according to claim 1, further comprising a frequency-based reproduction control unit that performs control to perform the above-described control. A recording / playback system configured to be communicably connected to a recording / playback device that receives digital television broadcasts and records and plays back video and audio, and a server system,
The server system is
Storage means for storing a keyword for each time zone obtained by dividing the digital television broadcast by time zone;
Selection means for selecting a keyword from keywords stored in the storage means in accordance with a selection instruction signal received from the recording / playback device;
Transmitting means for transmitting the keyword selected by the selecting means and the data of the time zone corresponding to the keyword to the recording / playback device;
With
The recording / playback machine includes:
Selection instruction signal transmitting means for transmitting a selection instruction signal for selecting a keyword to the server system;
Receiving means for receiving a keyword and data of a time zone corresponding to the keyword from the server system;
Reproduction control means for performing control to read out and reproduce video and audio in a time period corresponding to a keyword satisfying a predetermined condition among the keywords received by the reception means from the recorded video and audio;
A recording / reproducing system comprising: The computer of the apparatus comprising a receiving means for receiving a digital television broadcast and a computer,
A recording function for recording video and audio of a channel selection program included in the digital television broadcast received by the receiving means;
A keyword storage function for storing a keyword related to the broadcast content in the time zone for each of a plurality of time zones in which the broadcast of the selected program is divided by time zone;
A reproduction control function for performing control to read out and reproduce video and audio in a time zone corresponding to a keyword satisfying a predetermined condition from the keywords stored by the keyword storage function;
A program to realize

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