JP2003199007A - Method for recording digital broadcasting and digital broadcasting receiver with built-in recorder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital broadcasting recording method which provides a digital broadcasting to a user by the unit of recording which the user is interested in and performs an editing work such as reproduction by the event, copying, erasing and re-arranging and also to provide a digital broadcasting receiver with a built-in recorder. <P>SOLUTION: A recording control task requests the preparation of a new file to a recording task in order to record the event 2 at a time n-seconds before the end of the event 1 (step S2). In the case of event updating time, the recording control task indicates the recording task to changeover a recording file and also to start writing the event 2 (step S3). Then the recording task stops writing to the file where the event 1 is recorded, closes the file and performs a completion processing (step S4). <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast recording method, and more particularly to a recording method for recording a digital broadcast such as a BS digital broadcast and a digital broadcast with a built-in recording device having a recording device for recording the digital broadcast. Relating to a receiving device.

[0002]

2. Description of the Related Art A satellite broadcasting format (digital broadcasting) by digital transmission has already been put to practical use. In this digital broadcasting, by adopting a high-efficiency compression coding technique, a broadcasting signal transmitted from a broadcasting station can be transmitted at a higher speed. A huge amount of information is transmitted. This transmitted information includes SI (used for program selection, etc.) such as information on video / audio signals (program information) forming program contents, information on data broadcasting, program name and program start / end time. Service In
information) is included.

Programs of this kind of digital broadcasting are stored in the HDD (Ha
Recording on a large-capacity storage medium such as rd Disk Drive) has been proposed in Japanese Patent Laid-Open No. 11-355686. When recording a program, the SI information described above
Since it is possible to identify individual events (programs), it is possible to record on an event-by-event basis by notifying the timing of event updates to the recording device built into the television receiver or externally connected. Is.

In this case, it is possible to set recording such as when an event is designated in advance by reservation recording or from the present to the end of the event. However, without reservation operation,
When the recording start or stop of the broadcast is performed by an instruction from the user such as continuously recording the subsequent event from the currently viewed event, a plurality of events are recorded in a single file. In order to extract only desired events from the recorded file and create a new file, the user operation and the recording device are required to perform complicated work such as setting edit points and deleting unnecessary portions.

[0005]

As described above, in the conventional method of recording an event of digital broadcasting, when the recording of the broadcast is started or stopped by the instruction from the user without the reservation operation, a plurality of events are recorded. Was recorded in a single file, and there was a problem that complicated work was required to reproduce each event and edit the recorded event.

The present invention can also be provided to the user in recording units that the user is aware of, and digital broadcasting capable of performing editing work such as reproduction, copy, deletion, and rearrangement in event units. An object of the present invention is to provide a recording method and a digital broadcast receiving device with a built-in recording device.

[0007]

In order to achieve the above object, a digital broadcast recording method of the invention according to claim 1 is
A recording method for receiving a digital broadcast signal, demodulating a transport stream including multiplexed packets carrying video information and audio information, and then readablely recording a desired transport stream in a recording device. In response to the operation of the start key, a file is generated for each event and recorded in the recording device.

Further, a recording method of the digital broadcast of the invention according to claim 2 is characterized in that, in claim 1, the management information of the file generated for each event is recorded in the recording device.

According to a third aspect of the present invention, there is provided a method of recording a digital broadcast, which comprises: receiving a digital broadcast signal, demodulating a transport stream including multiplexed packets carrying video information and audio information, In a recording method for rewritably recording the transport stream of the recording device, a recording file for recording the transport stream of the event for each event in response to the operation of the recording start key and a margin before and after the recording file. The file is generated and recorded in a recording device.

Further, the recording method of the digital broadcast of the invention according to claim 4 is the method according to claim 1, wherein a file for recording the second event following the first event is generated during the recording of the first event. It is characterized by

According to a fifth aspect of the present invention, there is provided a digital broadcast recording method according to the first aspect, wherein recording is stopped and a recording permission is given when a recording prohibition signal is received during recording of the first event. When the first event is updated to the second event when the signal of 1 is received, the second event of the new file is recorded.

Further, the recording apparatus built-in type digital broadcast receiving apparatus of the invention according to claim 6 receives a digital broadcast signal and demodulates a transport stream including multiplexed packets carrying video information and audio information. later,
In a digital broadcast receiving device with a built-in recording device, which is equipped with a recording device for readablely recording a desired transport stream, an event update monitoring means for monitoring the timing of event update, and an event update monitoring means for updating the event from the event update monitoring means. Recording control means for controlling the start and stop of recording of the recording device in response to the timing notification,
Recording operation means for recording and stopping the recording device in response to the notification from the recording control means.

According to a seventh aspect of the present invention, there is provided a recording device built-in type digital broadcast receiving device, wherein a file is generated for each event and recorded in the recording device in response to an operation of a recording start key. It is characterized by

Further, the recording apparatus built-in type digital broadcast receiving apparatus of the present invention according to claim 8 is characterized in that, in claim 6, it is provided with a copy control monitoring means for monitoring the recordability control information of the event.

With such a configuration, since a file is created for each event at the recording stage, it is possible to provide the user with the recording unit that the user is conscious of, and the reproduction and copy in the event unit. It is also possible to perform editing work such as deletion, rearrangement and the like.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.
A description will be given with reference to the drawings.

First, FIG. 1 shows a mass storage medium such as a hard disk drive (hereinafter referred to as HDD) and a BS.
It is a block diagram showing a television receiver having a built-in tuner compatible with digital broadcasting such as digital broadcasting.

A signal of a digital broadcast such as BS digital is received from the antenna 1 and is tuned by the tuner 2. The resulting packet of the transport stream (hereinafter referred to as TS) includes a TS decoder and an MPEG decoder. Input to the decoder 3. The decoder 3 is connected to the MPU 4 that controls the entire system, and receives a command from the MPU 4 to perform TS decoding and MPEG decoding. Besides, the MPU 4 has a large-capacity recording device 5 for mainly recording the TS, a RAM 6 for recording temporary data, a ROM 7 for recording data in a nonvolatile manner, and an infrared light receiving unit for receiving an infrared signal from the remote controller 8. 9 and the keyboard 10.

When the video signal decoded by the decoder 3 is displayed as it is on the television screen, the decoded video signal is format-converted into an appropriate picture frame by the video processing unit 11, and further converted into an RGB signal by the display processing unit 12. And is displayed on the cathode ray tube 13.

When recording the TS in the recording device 5, the TS input to the decoder 3 is converted into a special format such as compression and recorded in the recording device 5. Thus the decoder 3
Has two major roles, one for video presentation and the other for HDD recording, so it may be divided into two or more chips.

A television receiver incorporating the above-mentioned recording device and capable of digitally recording a BS digital broadcast is provided on a recording start key (television receiver and / or remote controller) instead of reservation for each program. By including the key), even if the event (program) was recorded without being aware of it, it is possible to do the following by automatically dividing and recording. If the user wants to display, manage, or edit the list in the unit recorded, the plurality of files created at this time can be displayed as if they were one file.

In addition, the user can display each event,
If you want to manage and edit, you can display by displaying each file. In other words, items with vague records such as "Sunday afternoon" are displayed in a list by event, and "afternoon news" from 0:00, "drama" from 1:00, "movie" from 2:00, etc. List display is possible. Since only one of the multiple events recorded continuously can be edited or deleted, it is possible to delete only the "drama" from 1:00 in the above example and leave the other ones. It is possible.

Further, when only a necessary event is to be viewed from among a plurality of events recorded continuously, it is not necessary to search the file from the beginning to find the corresponding event, and the viewing can be performed by the index operation. When editing, such as erasing, moving, copying, etc., in the recorded unit (Sunday afternoon), if all recorded files are handled continuously, the user can operate in recorded units. Becomes

Next, the recording method according to the embodiment of the present invention capable of the above-mentioned file operation will be described with reference to FIG. In this recording method, the MPU 4 allows the event update monitoring task, recording control task, recording task, S
The operation task of the I information providing task is executed. The event update monitoring task notifies the recording control task of the event update timing based on the event name and end time information / start time in the SI information acquired by the MPU 4 from the decoder 3. The recording control task is for the MPU 4 to control the recording device 5 to start and stop recording, and the recording task is a recording operation for the recording device 5. The SI information providing task is that the MPU 4 acquires SI information from the decoder 3.

FIG. 2 shows a flow for recording event 1 and event 2 continuously. In FIG. 2, event 1 is recorded in response to a recording instruction. During this recording, the event update monitoring task notifies the recording control task when n seconds before the end time of event 1 from the SI information of event 1 acquired in advance (step S1). The recording control task that received this notification
A file name and a database are created and recorded in the record information management area of the recording device 5. After this, the recording control task requests the recording task to prepare a new file for recording event 2, and starts counting the actual recording start time (step S2). This start time counting can also be performed by the event update monitoring task.

At the event update time (time when event 1 ends and event 2 starts) due to the count-up, the recording control task instructs the recording task to switch the recording file and to start writing event 2 (step S3). Thereafter, the recording control task instructs the recording task to stop the writing to the file in which the event 1 is recorded, close the file, and perform the termination process (step S
4). Upon receiving the SI information of the event 2 from the SI information providing task, the recording control task creates a database of the event 2 and records the same as the database of the event 1 (step S5). Prior to step S5, the recording control task completes the database of event 1 for which recording has been completed.

In step S4, the event recording is stopped and the file end processing is performed.
When playing back while recording, that is, during so-called chasing playback, only the recording is stopped and the file is not closed.

Next, regarding another embodiment of the present invention,
This will be described with reference to FIG. FIG. 3 shows a recording method when an event is copy-protected. In this recording method, a copy control monitoring task is newly added to FIG.

In FIG. 3, event 3 is recorded in response to a recording instruction. During this recording, when it is n seconds before the end time of the event 3 from the SI information of the event 3 acquired in advance, the event update monitoring task notifies the recording control task (step S10). Upon receiving this notification, the recording control task creates a file name and a database and records it in the recording information management area of the recording device 5. After this, the recording control task requests the recording task to prepare a new file for recording event 4, and starts counting the actual recording start time (step S11). As in the case of the above-described embodiment, the counting of the start time can be performed by the event update monitoring task.

If there is a copy-prohibited portion during the recording of the event, the copy control monitoring task notifies the recording control task of the suspension of recording (step S
12) The notified recording control task notifies the recording task of the suspension of recording (step 1).
3). This suspension of recording is executed regardless of the event update timing. The recording task receiving this stops recording.

When the copy becomes possible in the same event, the recording is restarted here, but when the event ends as it is, the update processing of the next event 4 is started regardless of the copy control state (next file Prepare and count the update time).

At the timing of counting up and switching to a new event, the operation of switching recording to a new file is normally performed, but if copying is not possible, this operation is not performed, and other processing is the same as copying is possible. To do. That is, the recording control task instructs the recording task to stop the recording of the event 3, and the recording task which receives the instruction performs the ending process of the recording of the event 3 (step 14). Then, the recording control task acquires new SI information of event 4 from the SI information providing task and creates a database of event 4 (step 15).

If copying becomes possible within the period of event 4, the copy control management task notifies the recording control task that copying is possible (step 16).
Upon receiving this notification, the recording control task instructs the recording task to start recording event 4 in a new file, and the recording task executes this (step 17).
After starting recording in the prepared file,
It can be processed like normal recording.

If the copy is not possible until the end of the new event, or if the recording is stopped, it is judged by the file size (time etc.) actually recorded in the recording stop process. Deletes files and attached information.

This recording method eliminates the need to change the file division procedure for event update even when copying is enabled / disabled during the event. In addition, even if the file for the next event is already prepared immediately before the event is updated by determining whether the file size is an invalid file at the time of this stop, if there is a stop by the user at this timing. Can also delete unnecessary files with normal stop processing.

The above recording method for enabling / disabling copying can be applied to the pausing / resuming of recording as it is. When an event is updated while it is paused, it can be processed in the same way as when an event is updated while it cannot be copied. Even if it remains paused for the entire period of the next event, the entire period of the next event cannot be copied. The same processing as in the case where it is left is performed.

Next, an event reproducing method according to another embodiment of the present invention will be described. When reproducing the event, the files divided into a plurality of pieces for each event are originally recorded continuously, and therefore must be reproduced as smoothly as possible. For this purpose, pre-processing such as opening the next file in advance at the time of switching to the next event is desirable as in the case of recording. Further, considering the special reproduction, it is preferable to prepare the next file immediately after the reproduction of the current event.

Also, since there is reverse reproduction, it is necessary to change the file corresponding to the following each time the reproduction direction changes.

A specific example of the reproducing method will be described with reference to FIG. 4. FIG. 4 is a flowchart for explaining the reproducing method for reproducing the event recorded in the plurality of divided files in the recording device. In FIG. 4, a reproduction control task controls the reproduction task such as starting and stopping reproduction. The replay task replays a file.

When an event is updated, that is, T in FIG.
At = t1, the reproduction task stops the reproduction of the event 5 file and starts the reproduction of the event 6 file. Prior to updating this event, during playback of event 5, the playback control task instructs the playback task to prepare the file of event 6 to be played next, and the playback task prepares to play the file in which event 6 is recorded. I do.

Reproduction start of new event 6 and event 5
The reproduction task notifies the reproduction control task that the reproduction has been stopped (step S20). Upon receiving this notification, the reproduction control task instructs the reproduction task to prepare for reproduction of the file of event 7 to be reproduced next, and the reproduction task executes this (step 21).

At the time of updating the event, at T = t2, similarly to the above, the reproduction task stops the reproduction of the file of event 6 and starts the reproduction of the file of event 7. The reproduction task notifies the reproduction control task of the reproduction start of the new event 7 and the reproduction stop of the event 6 (step S22). The replay control task that received this notification instructs the replay task that there is no next event to replay, since this event 7 is the last event to replay, and the replay task next file Is not prepared for playback (step S2
3).

When the reproduction of the event 7 ends (T = t3), the reproduction task stops the reproduction of the file of the event 7 and notifies the reproduction control task of the stop of the file (step S24). Upon receiving this notification, the reproduction control task ends the reproduction processing.

Next, the reproducing process in the case where the user operates the reverse reproduction of the event 1 during the reproduction of the event 2 will be described with reference to FIG. The same parts as those in FIG. 4 are designated by the same reference numerals. When updating from event 5 to event 6 (T = t1), steps S20 and S21 are the same as those in FIG.

At T = t4, when the reverse reproduction operation is performed, the reproduction control task
The reverse reproduction and the reverse reproduction of the event 1 are instructed (step S25). Upon receiving this instruction, the reproduction task stops the preparation for reproducing the file of event 6 prepared in step S21, stops the reproduction of the file of event 6 being reproduced, and starts the reverse reproduction of the file of event 5. To do. That is, the event is reproduced from T = t1 backward in the recording time (step S26).

In the recording method according to the above-described embodiment, each event is recorded in one file, but a blank area for a certain period is provided before and after this file (so-called margin), and this blank area is set as a separate file. It is also possible to manage and create three files for one recorded event. After recording the event, the user can handle the event as a single event with the blank area still attached, or delete the blank area and re-edit one event into one file. With this recording method, it is possible to deal with a wide range of situations, such as when editing an event such as copying, with a margin before and after the event.

[0047]

According to the invention described in detail above, since a file is created for each event at the recording stage, it is possible to provide the user with a recording unit that the user is aware of. Play, copy, delete in
It is possible to perform editing work such as sorting.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a television receiver according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a recording method according to the embodiment of the invention.

FIG. 3 is a flowchart showing a recording method according to another embodiment of the present invention.

FIG. 4 is a flowchart showing a reproducing method according to another embodiment of the present invention.

FIG. 5 is a flowchart showing a reproducing method according to another embodiment of the present invention.

[Explanation of symbols]

1 ... Antenna 2 ... Tuner 3 ... Decoder 4 ... MPU 5 ... Recording device 6 ... RAM 7 ... ROM 8 ... Remote control 9 ... Infrared receiver 10 ... Keyboard 11 ... Image processing unit 12 ... Display processing unit 13 ... CRT

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Claims (8)

[Claims] 1. A digital broadcast signal is received, a transport stream including multiplexed packets carrying video information and audio information is demodulated, and then a desired transport stream is readably recorded in a recording device. In the recording method, a file is generated for each event and recorded in a recording device in response to an operation of a recording start key. 2. The method of recording a digital broadcast according to claim 1, wherein management information of a file generated for each event is recorded in a recording device. 3. A digital broadcast signal is received and, after demodulating a transport stream including multiplexed packets carrying video information and audio information, a desired transport stream is recorded on a recording device in a readable manner. In the recording method, in response to the operation of the recording start key, a recording file for recording the transport stream of the event for each event and a margin file before and after the recording file are generated and recorded in the recording device. Recording method of digital broadcasting. 4. The method for recording a digital broadcast according to claim 1, wherein a file for recording a second event following the first event is generated during recording of the first event. 5. The recording is stopped when a recording prohibition signal is received during the recording of the first event, and the first event is updated to the second event when the recording permission signal is received. The method of recording a digital broadcast according to claim 1, wherein the second event of the new file is recorded if the second event is recorded. 6. A recording device for receiving a digital broadcast signal, demodulating a transport stream including multiplexed packets carrying video information and audio information, and thereafter readablely recording a desired transport stream. In a built-in digital broadcasting receiver with a built-in recording device, an event update monitoring means for monitoring an event update timing, and the start and stop of recording of the recording device upon receiving notification of the event update timing from the event update monitoring means A digital broadcast receiving device with a built-in recording device, comprising: recording control means for controlling; and recording operation means for recording and stopping the recording device in response to a notification from the recording control means. 7. The digital broadcast receiving device with a built-in recording device according to claim 6, wherein a file is generated for each event and recorded in the recording device in response to an operation of a recording start key. 8. A copy control monitoring means for monitoring event recording permission / inhibition control information is provided.
A digital broadcast receiving device with a built-in recording device as set forth.