JP2006180264A - Broadcast program recording device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a broadcast program recording device which can easily perform automatic program search in reproducing a recorded program, easily perform editing to erase an unnecessary part, and reliably perform video recording even when the broadcast time of the reserved broadcast program is changed, when the broadcast program is timer recorded. <P>SOLUTION: A timer recording management part 3 sets a time, which is obtained by subtracting a start margin from a set video recording start time which is set in setting timer recording, as an actual recording start time and sets a time, which is obtained by adding an end margin to a set video recording end time, as an actual recording end time. A video recorder 5 performs video recording between the actual recording start time and the actual recording end time, so as to generate a video recording data stream. Then the position of the video recording data stream is recorded at the set video recording start time and the set video recording end time. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a broadcast program recording apparatus that reserves and records a broadcast program on a randomly accessible recording medium such as a hard disk recorder.

  In recent years, broadcast program recording apparatuses using a randomly accessible recording medium typified by a hard disk recorder instead of a VTR have become widespread. A broadcast program recording apparatus using a randomly accessible recording medium has functions such as high-speed cue playback (chapter search) from a specified position, non-linear editing, and the like that are not available in a VTR.

  Such a broadcast program recording apparatus is equipped with a reserved recording recording function for recording a specific broadcast program by time designation. Broadcast programs to be reserved and recorded are broadcast according to a predetermined schedule. There are also programs that are broadcast every week or every day at a designated time, such as a series drama.

  Programs that are broadcast in these specific patterns can be recorded every time with a single reservation setting as a pattern reservation, such as “weekly reservation” or “daily reservation”.

  However, the broadcast time of programs broadcast in these specific patterns may be changed from the normal broadcast time by special programs. In order to cope with the change of the broadcast time, the user cannot escape from the preliminary survey of the broadcast schedule even if the user makes a pattern reservation. In addition, due to the extension of baseball broadcasts or emergency program broadcasts, the broadcast schedule may be changed suddenly, and there is a limit to manual reservation changes.

  In view of the fact that the broadcast time may be changed, the user reserves the recording time with a margin before and after the program to be recorded. However, in this method, when the program to be recorded is broadcast at the normal broadcast time, unnecessary programs are recorded before and after, and complicated operations such as cueing at the time of playback and erasing of unnecessary parts are performed. There was a problem of increasing.

  Therefore, in recent years, attention has been paid to a method for solving the above problem by using broadcasts such as EPG (electronic program guide) and external program information distributed on the Internet.

  A broadcast program recording apparatus using EPG is disclosed in Patent Document 1, for example. This broadcast program recording apparatus acquires an EPG in advance and extracts program information that may be extended. Then, the reserved recording (the program with the possibility of extension and the program broadcast after the program with the possibility of extension) affected by the extension broadcast is changed to the reservation time considering the maximum extension time. Thereafter, the EPG is acquired and updated sequentially, and when it is confirmed that the program whose broadcast has been extended is completed, the reserved recording is corrected according to the actual broadcast extension time.

  However, a broadcast program recording apparatus using EPG naturally requires an EPG acquisition function, but the incorporation of this function is accompanied by an increase in cost. Also, the effect could not be obtained in an environment where EPG cannot be received. Even if the EPG can be received at present, the EPG broadcast format may be changed or the distribution may be stopped, and there is no guarantee that the EPG can be received in the future.

Furthermore, when using specific keyword detection as in the broadcast program recording device disclosed in Patent Document 1, a keyword detection function is required, but expected operations may not be performed due to false detection or detection omission. . Further, increasing the accuracy of keyword detection leads to complicated processing and increases costs.
JP 2003-134431 A

  Considering this point, in the broadcast program recording apparatus using external program information such as EPG as disclosed in Patent Document 1, the broadcast time is changed when the broadcast program is reserved and recorded. Even if an unwanted program is recorded before or after the program you want to record by reserving the recording time with a margin before and after the program broadcast time in order to reliably record the program you want to record It has not been possible to solve the problem that troublesome work such as time cueing work and unnecessary part erasing work increases.

  Therefore, the present invention can easily perform cueing at the time of playback of a recorded program and remove and edit unnecessary portions when recording a reserved program for recording without using external program information. An object of the present invention is to provide a broadcast program recording apparatus capable of reliably recording even when the broadcast time of a program is changed.

  The broadcast program recording apparatus of the present invention is a broadcast program recording apparatus that reserves and records a broadcast program on a randomly accessible recording medium, and sets a start margin with respect to a set recording start time set at the time of recording reservation setting. And setting an end margin with respect to the set recording end time, setting a time obtained by subtracting the start margin from the set recording start time as an actual recording start time, and adding the end margin to the set recording end time. Is set as the actual recording end time, the recording data stream creating means for creating a recording data stream between the actual recording start time and the actual recording end time, and the setting as the set recording start position. The position of the recording data stream at the recording start time is recorded, and the set recording end time is set as the set recording end position. A set recording position recording means for recording the position of the recorded image data stream; and when the broadcast time of the reserved broadcast program is changed, the set recording start position is set to the broadcast start time of the broadcast program and the set recording start time. Recording position correction means for moving the set recording end position by the difference time between the broadcast end time of the broadcast program and the set recording end time.

  The broadcast program recording device of the present invention sets the time obtained by subtracting the start margin from the set recording start time set at the time of recording reservation setting as the actual recording start time, and sets the time obtained by adding the end margin to the set recording end time. Set as the end time, create a recording data stream between the actual recording start time and the actual recording end time, and record the position of the recording data stream at the set recording start time and the set recording end time. If there is no change in the broadcast time, playback can be performed without worrying about the start margin by playing from the set recording start position. Further, it is possible to easily remove and edit unnecessary start margin portions and end margin portions.

  Further, even when there is a change in the broadcast time of the reserved program, it is possible to cope with the change of the broadcast time by the start margin portion and the end margin portion, so that the reserved program can be reliably recorded. Furthermore, the set recording start position is moved by the difference time between the broadcast start time of the broadcast program and the set recording start time, and the set recording end position is moved by the difference time between the broadcast end time of the broadcast program and the set recording end time. Therefore, it is possible to easily perform cueing at the time of reproduction of a recorded program and remove and edit unnecessary portions.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Example)
An embodiment of the broadcast program recording apparatus of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram showing a broadcast program recording apparatus according to an embodiment of the present invention, FIG. 2 is a flowchart showing an operation procedure of a recording reservation management unit, and FIG. 3 shows recording reservation information stored in a recording reservation information storage unit. FIG. 4, FIG. 4 is a flowchart showing a procedure for executing recording reservation in the broadcast program recording apparatus shown in FIG. 1, FIG. 5 is a diagram showing recording management information stored in the recording management information storage unit, and FIG. FIG. 7 is a diagram showing a recorded data stream in which the set recording start position and the set recording end position are moved by the difference time.

  As shown in FIG. 1, the broadcast program recording apparatus of the present embodiment includes a user command input unit 1, a system management unit 2, a recording reservation management unit 3, a recording management unit 4, a recording unit 5, and a recording management. An information storage unit 6, a tuner 7, a recording data stream storage unit 8, a recording reservation information storage unit 9, a playback management unit 10, and a playback unit 11 are provided.

  The user command input unit 1 receives a user instruction via an input device such as a remote controller 12 and outputs an input command to the system management unit 2. The system management unit 2 analyzes the input command from the user command input unit 1, and according to the command content, the recording reservation instruction to the recording reservation management unit 3, the recording instruction to the recording management unit 4, and the reproduction instruction to the reproduction management unit 10 Is output.

  The recording reservation management unit 3 creates recording reservation information according to an instruction from the system management unit 2 and stores it in the recording reservation information storage unit 9. The recording reservation is executed by outputting an instruction to the recording management unit 4 based on the recording reservation information stored in the recording reservation information storage unit 9.

  The recording management unit 4 outputs a recording instruction to the recording unit 5 in accordance with instructions from the system management unit 2 and the recording reservation management unit 3. Also, the recording management information is created and stored in the recording management information storage unit 6.

  In accordance with an instruction from the recording management unit 4, the recording unit 5 converts the broadcast received by the tuner 7 via the antenna 13 into a recording data stream such as MPEG2-TS and stores it in the recording data stream storage unit 8. .

  The reproduction management unit 10 outputs a reproduction instruction to the reproduction unit 11 in accordance with an instruction from the system management unit 2. In addition, a playback instruction may be output based on the recording management information stored in the recording management information storage unit 6.

  The playback unit 11 acquires a recorded data stream from the recorded data stream storage unit 8 according to an instruction from the playback management unit 10, plays it back, and outputs a playback image to the monitor 14.

  Next, the operation of the recording reservation management unit 3 when setting a recording reservation in the broadcast program recording apparatus of the present embodiment will be described based on the flowchart shown in FIG.

  First, in step S110, the recording reservation management unit 3 determines whether there is a change-guaranteed recording instruction. The change guaranteed recording instruction is given from the system management unit 2 as an input from the user, or the recording reservation management unit 3 creates the change guaranteed recording instruction from the reserved time or the like. For example, a reservation for recording after 7 pm during the professional baseball season (late March to early October) is predicted to change the recording time by extending the broadcast time. Therefore, it can be determined that a change-guaranteed recording instruction is added to such a reservation.

  If it is determined in step S110 that there is a change-guaranteed recording instruction (YES), the process proceeds to step S120, a start margin is set for the set recording start time given as an input from the user, and the start margin is subtracted from the set recording start time. Is set as the actual recording start time. For example, if the set recording start time is 19:00 and the start margin is 30 minutes, the actual recording start time is 18:30.

  Next, in step S130, an end margin is set for the set recording end time given as an input from the user, and a time obtained by adding the end margin to the set recording end time is set as the actual recording end time. For example, if the set recording end time is 21:00 and the end margin is 1 hour, the actual recording end time is 22:00. Note that the start margin and the end margin may be given as input from the user.

  If it is determined in step S110 that there is no change guarantee recording instruction (NO), normal recording reservation processing is performed, no margin is set, and the actual recording time and the set recording time are the same. That is, in step S140, the set recording start time is set as the actual recording start time, and in step S150, the set recording end time is set as the actual recording end time.

  Next, in step S160, the recording reservation information created in steps S110 to S150 is stored in the recording reservation information storage unit 9. As shown in FIG. 3, the recording reservation information stored in the recording reservation information storage unit 9 includes a reservation number, a channel, presence / absence of a change-guaranteed recording instruction, actual recording start time, actual recording end time, set recording start time, and setting The recording end time is recorded.

  The recording reservation management unit 3 executes the recording reservation by outputting a recording instruction to the recording management unit 4 at the actual recording start time based on the recording reservation information.

  Next, a procedure for executing a recording reservation in the broadcast program recording apparatus of the present embodiment will be described based on the flowchart shown in FIG.

  First, in step S210, the recording reservation management unit 3 outputs a recording instruction to the recording management unit 4 based on the recording reservation information stored in the recording reservation information storage unit 9, and the recording management unit 4 performs actual recording on the recording unit 5. An instruction is output to start recording from the start time. The recording unit 5 starts recording the designated broadcast from the actual recording start time, and converts the broadcast received by the tuner 7 via the antenna 13 into a recorded data stream such as MPEG2-TS.

  Next, in step S220, the recording reservation management unit 3 determines whether there is an information change guaranteed recording instruction based on the recording reservation information. If it is determined that there is a change-guaranteed recording instruction (YES), in step S230, the recording reservation management unit 3 outputs an instruction to the recording management unit 4, and the recording management unit 4 instructs the recording unit 5 at the set recording start time according to the instruction. Instructs to record the position of the recording data stream (set recording start position). For example, this is the work of creating a chapter in the recording data stream at the set recording start time.

  Next, in step S240, the recording management unit 4 instructs the recording unit 5 to record the position of the recording data stream (set recording end position) at the set recording end time.

  If it is determined in step S220 that there is no change guarantee recording instruction (NO), the process proceeds to step S250.

  In step S250, the recording management unit 4 outputs an instruction to the recording unit 5 to end the recording at the actual recording end time, and the recording unit 5 ends the recording at the actual recording end time accordingly.

  Next, in step S 260, the recording management unit 4 creates recording management information and outputs it to the recording management information storage unit 6. As shown in FIG. 5, the recording management information stored in the recording management information storage unit 6 is recorded with a stream ID and change guarantee recording instruction information. The set recording end position is recorded.

  In step S270, the recording unit 5 outputs the created recording data stream to the recording data stream storage unit 8. In the recording data stream created by the recording unit 5, as shown in FIG. 6, a set recording start position (ChapterX) and a set recording end position (ChapterY) are recorded.

  By using the recording management information shown in FIG. 5, it is possible to comfortably reproduce and edit the recorded data stream.

  For example, since the set recording start position in the recording data stream can be known from the recording management information, the playback management unit 10 sets the set recording in the recording data stream based on the recording management information stored in the recording management information storage unit 6. A reproduction instruction is output to the reproduction unit 11 so as to reproduce from the start position. The playback unit 11 acquires a recorded data stream from the recorded data stream storage unit 8 according to an instruction from the playback management unit 10, plays it back, and outputs a playback image to the monitor 14.

  Thereby, by reproducing from the set recording start position at the time of reproduction, the user can appreciate the reproduced image without worrying about the start margin portion recorded in the recorded data stream.

  Also, if there is no change in the program broadcast time, the start margin and end margin are unnecessary and need to be deleted. Since the set recording start position and the set recording end position in the recording data stream are recorded in the recording management information, the start margin and end margin portions (shaded portions in FIG. 6) in the recording data stream are clear, and the recording management unit 4 outputs an instruction to the recording unit 5 to delete the start margin and the end margin based on the recording management information, and the recording unit 5 deletes it accordingly.

  Even if the program broadcast time is changed, if the change is within the range of the start margin and the end margin, the reserved program is recorded, and the change of the program broadcast time can be handled.

  Further, in this case, when the difference time between the set recording start time and the actual broadcast start time and the difference time between the set recording end time and the actual broadcast end time are input to the user command input unit 1, the system management unit 2 In response to an input command from the input unit 1, an instruction is output to the recording management unit 4, and the recording management unit 4 further compares the set recording start position and the set recording end position recorded in the recording data stream to the recording unit 5. Instruct them to move for hours.

  For example, as shown in FIGS. 3 and 5, when the set recording start time is set to 19:00, the set recording end time is set to 21:00, the start margin is set to 30 minutes, and the end margin is set to 1 hour, the reserved program When the broadcast start time and the broadcast end time are respectively lowered by 30 minutes, the set recording start position (ChapterX) and the set recording end position (ChapterY) of the recording data stream are moved by 30 minutes as shown in FIG.

  Accordingly, by playing from the set recording start position that has moved during playback, it is possible to view the playback image without worrying about unnecessary portions recorded in the recorded data stream. Further, unnecessary portions (shaded portions in FIG. 7) in the recorded data stream are obvious and can be easily deleted.

  Thus, according to the broadcast program recording apparatus of the present embodiment, the recording reservation management unit 3 sets the actual recording start time and the actual recording end time, the recording unit 5 creates the recording data stream, and the set recording start time and Since the position of the recording data stream at the set recording end time is recorded, if there is no change in the broadcast time of the reserved program, playback is performed without worrying about the start margin by playing from the set recording start position. be able to. Further, it is possible to easily remove and edit the start margin portion and the end margin portion.

  Further, even when there is a change in the broadcast time of the reserved program, it is possible to cope with the change of the broadcast time by the start margin portion and the end margin portion, so that the reserved program can be reliably recorded. Furthermore, the set recording start position is moved by the difference time between the broadcast start time of the broadcast program and the set recording start time, and the set recording end position is moved by the difference time between the broadcast end time of the broadcast program and the set recording end time. Therefore, it is possible to easily perform cueing at the time of reproduction of a recorded program and remove and edit unnecessary portions.

It is a block diagram which shows the broadcast program recording apparatus of the Example of this invention. It is a flowchart which shows the procedure of operation | movement of a video recording reservation management part. It is a figure which shows the video recording reservation information preserve | saved at a video recording reservation information storage part. It is a flowchart which shows the procedure which performs recording reservation with the broadcast program recording apparatus shown in FIG. It is a figure which shows the recording management information preserve | saved at a recording management information storage part. It is a figure which shows the video recording data stream produced in a video recording part. It is a figure which shows the video recording data stream which moved the setting recording start position and the setting recording end position only by the difference time.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 User command input part 2 System management part 3 Recording reservation management part 4 Recording management part 5 Recording part 6 Recording management information storage part 7 Tuner 8 Recording data stream storage part 9 Recording reservation information storage part 10 Playback management part 11 Playback part 12 Remote control 13 Antenna 14 Monitor

Claims (1)

A broadcast program recording device for recording and recording a broadcast program on a randomly accessible recording medium,
Set the start margin for the set recording start time set at the time of recording reservation setting, set the end margin for the set recording end time, and start the actual recording by subtracting the start margin from the set recording start time Real recording time setting means for setting as a real recording end time, which is set as a time, and a time obtained by adding the end margin to the set recording end time;
A recording data stream creating means for creating a recording data stream between the actual recording start time and the actual recording end time;
Setting recording position recording means for recording the position of the recording data stream at the set recording start time as the setting recording start position, and recording the position of the recording data stream at the set recording end time as the setting recording end position;
When the broadcast time of the reserved broadcast program is changed, the set recording start position is moved by a difference time between the broadcast start time of the broadcast program and the set recording start time, and the set recording end position is moved to the broadcast program. A broadcast program recording apparatus, comprising: a recording position correcting means for moving by a difference time between the broadcast end time and the set recording end time.

Images