JP4005716B2 - Digital broadcast program recording / playback device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an information recording apparatus, and more particularly to a digital broadcast program recording / reproducing apparatus suitable for recording / reproducing a music program or the like in a digital broadcast, particularly in a mobile environment.
[0002]
[Prior art]
In mobile satellite broadcasting, since there is a high possibility that the vehicle is operated while driving, it is important that operations such as channel selection and recording are simple.
In a conventional stationary broadcast program recording / playback apparatus, there is a method of recording (or recording) with a timer recording function, a recording reservation function, or the like when the broadcast contents are known in advance. However, these functions require setting of a start time, an end time, a reception channel, etc., and the operation is not simple and is not appropriate for operating the vehicle while driving.
[0003]
In addition, the conventional apparatus can directly record (or record), but since the operation is recorded (or recorded) after the operation, the recording (or recording) is performed after viewing the contents of the program. Even if there is a request to record, it is not possible to record all the contents to be recorded (or recorded).
[0004]
On the other hand, it is important to consider that errors occur in the received data in the mobile environment, but if an error occurs during recording (or recording) operation, the data is not suitable for playback many times later. There is a problem that it becomes. In the conventional apparatus, in such a case, the user has to re-record (or record) again.
[0005]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION A first object of the present invention is to provide a digital broadcast program recording / playback apparatus that can solve the above-described problems and can be recorded by a user with a simple operation. A second object is to provide a reproducing apparatus, and a third object is to provide a digital broadcast program recording / reproducing apparatus capable of automatically restoring data even when an error occurs in received data.
[0006]
[Means for Solving the Problems]
The digital broadcast program recording / playback apparatus according to the present invention has the following characteristic configuration.
(1) A digital broadcast program recording / reproducing apparatus for receiving broadcast data of a digital broadcast program and recording / reproducing an arbitrary object file in the received broadcast data , wherein the broadcast data is temporarily recorded and a permanent area. A recording medium having a storage area for recording, a recording standby processing means for temporarily recording an object file in the broadcast data in a temporary area of the recording medium in accordance with designation of a recording standby mode, And recording processing means for transferring the entire object file recorded in the temporary area of the recording medium to the storage area as a storage file when a recording instruction is issued during the recording standby mode.
[0007]
(2) In the configuration of (1), when the broadcast data is provided with identification information indicating the content and configuration of the program, the recording standby processing means starts the object file head of the program being received based on the identification information. And is recorded from the beginning in the temporary area.
[0008]
(3) In the configuration of (1), the contents of a program in the broadcast data, when the identification information indicating a configuration is provided, the recording processing means, the identification information together with the object file in accordance with the recording instruction It is characterized by being recorded.
[0009]
(4) In the configuration of (3), error processing means for detecting that an error has occurred in an object file in the broadcast data and adding error information of the file to the object file for recording, and the recording The identification information of the object file to which the error information is added is read from the medium, and when this identification information is detected from the broadcast data , the object file corresponding to the identification information is extracted from the broadcast data and stored in the temporary area. Rewriting processing means for storing and rewriting at least an error part or all of the object file already recorded in the storage area into an object file newly stored in the temporary area.
[0010]
(5) In the configuration of (4), the rewrite processing section searches the identification information in the broadcast data, the automatic searching certain program needs to be re-recorded from the error information in the recorded data When the same program is broadcast again, it is automatically recorded again.
[0011]
(6) In the configurations of (2) to (5), the identification information is silence data.
(7) In the configuration of (1), when the object file recorded in the storage area is reproduced or edited, an identification information display means for displaying the contents of the identification information added to the object file is provided. Features.
That is, in order to achieve the first object, the digital broadcast program recording / playback apparatus according to the present invention transmits the identification information of a song (program) together with the data to be broadcast, Using this function, a function is provided that allows recording from the beginning of a song (program) in the middle of a song (program). Further, there is a case where an error occurs in the received data and the recording (or recording) state is deteriorated, and a function of automatically repairing this is provided.
[0012]
In the present invention, identification information of a song (program) is transmitted together with data to be broadcast, and in a function of recording (or recording) a music broadcast or the like, a part of media for recording (or recording) or separately. When an area or means for temporarily recording data is provided and the contents currently being received (playing) are stored in the area in the recording standby state, and the user performs a recording (or recording) operation. This data is stored as recorded (or recorded) data.
[0013]
The identification information includes the program song title, artist name, performance time, and the like.
Based on the above identification information, the head of the program being played is recognized, and when the user performs a recording operation, it is stored as recording (or video recording) data from this head.
[0014]
The recording data (or recording) is recorded together with the identification information and information indicating the recording (or recording) state. When the recording (or recording) state is not appropriate, the same program is broadcast again. The data is automatically updated when the
[0015]
Further, the present invention provides, as a first application example, a digital broadcast program recording / reproducing apparatus for receiving broadcast data of a digital broadcast program and recording / reproducing an arbitrary object file in the received broadcast data, wherein the broadcast data And recording processing means for recording the identification information together with the object file in accordance with a recording instruction when the broadcast data is provided with identification information indicating the content and structure of the program. There is provided a digital broadcast program recording / reproducing apparatus characterized by the above.
As a second application example, a memory device having a temporary area and storage area, when the recording standby, the temporary area recording means for recording the temporary area while sequentially rewritten communication information predetermined time period, in the recording instruction In response to this, the information recording apparatus further comprises a storage area recording means for transferring the communication information stored in the temporary area to the storage area and continuously recording the communication information obtained in the storage area. I will provide a.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram showing the configuration of a digital broadcast program recording / playback apparatus according to the present invention. In FIG. 1, a tuner 11 selects an arbitrary channel from among a plurality of channels, and a demodulator 12 demodulates a program information signal of that channel. The program information signal extracted here is sent to the demultiplexing unit 13. The demultiplexing unit 13 identifies video data and audio data (object file) that are packet-multiplexed with the program information signal, and identification information data (music and scene identification as well as reproduction timing of video data and audio data). The video data is decoded by the video decoder 14 and displayed on the display 15, the audio data is decoded by the audio decoder 16 and reproduced by the speaker 17, and the identification information data is controlled by the control unit 18. Sent to. These data are also sent to the storage unit 19.
[0017]
The control unit 18 sends a storage control signal to the storage unit 19 in response to a recording mode signal from the operation unit 20. The storage unit 19 includes a temporary file storage area and a regular file storage area, and writes and reads video data, audio data, and identification information data from the demultiplexing unit 13 based on a storage control signal from the control unit 18. The video data and audio data read from the storage unit 19 are sent to the video decoder 14 and the audio decoder 16, respectively, and are appropriately reproduced.
[0018]
Here, the main part of the said structure is explained in full detail. First, as shown in FIG. 2, the demodulator 12 and the demultiplexer 13 are interfaced by data and an ENABLE signal. Data is valid when the ENABLE signal is at "H" level, and this is a unit of one packet. Each packet has a header indicating the content of the packet, and the demultiplexing unit 13 interprets the header to identify video data, audio data, identification information data, and the like, and based on the identification result. To sort each data.
[0019]
Further, the video decoder 14 and the audio decoder 16 are provided with an input system from the demultiplexing unit 13 and an input system from the storage unit 19, but the data from the demultiplexing unit 13 is used for real-time reproduction of received data. When reproducing the recorded data or the recorded data, the data from the storage unit 19 is used.
[0020]
The storage data format of the storage unit 19 handles, for example, one program or song as three files: a management file, a video data file, and an audio data file. An example is shown in FIG.
[0021]
As shown in FIG. 3A, the management file has a field for storing information indicating the quality of data together with a field for storing identification information data. As shown in FIG. 3B, the video data file is obtained by sequentially capturing video data in units of packets. In addition, the audio data file is obtained by sequentially acquiring audio data in units of packets as shown in FIG. 3C.
[0022]
Here, in the data pass / fail information field, a 1-bit flag is associated with each packet of the video data file and the audio data file, and 1 is written to the flag of the packet in which an error is detected by the decoders 14 and 16 during recording or recording. Like that. As an example, FIG. 4 shows a case where there is an error in the third packet and the seventh packet.
[0023]
In the above configuration, in digital broadcasting assumed in the present embodiment, data is transmitted in packet units, and identification information packets are inserted between pieces of music as identification information data indicating the contents of a program. Hereinafter, a flow of a series of operations performed by the control unit 18 will be described with reference to FIG. 5 when one program is broadcast on one information channel and an arbitrary song is recorded.
[0024]
Broadcast data is divided into a plurality of packets and sent out sequentially. An identification information packet is inserted for each segment of broadcast data songs. The identification information packet contains data such as a song title, artist name, and performance time.
[0025]
Now, when the recording standby mode is instructed by the user's operation through the operation unit 20 and a certain identification information packet is received and detected (S1), the data subsequent to this packet is data constituting one song. Is recognized. At this time, while reproducing the received data, the data below the identification information is stored in the temporary file storage area of the storage unit 19 (S2).
[0026]
If a recording instruction is given by the user's operation through the operation unit 20 during playback of this song (S3), the data stored in the temporary file storage area so far is treated as regular recording data and the regular recording is performed. The data is moved to the regular file storage area for storing data (S4), and the subsequent data is continuously stored in the same area as the normal recording data (S5), and the recording ends when the next identification information packet is detected. (S6, S7).
[0027]
If there is an instruction to stop the operation at this time, the recording standby mode is terminated. If there is no instruction to stop the operation, the process returns to step S2 and data below the previously detected identification information is stored in the temporary file storage area of the storage unit 18. Thereafter, the same processing is performed.
[0028]
Next, even if the storage of the temporary file is started in step S2, if there is no recording instruction in step S3 and the identification information is detected in step S9, it is assumed that the song is not recorded and the temporary file in the temporary file is not recorded. The data is erased and the process returns to step S2, the data of the next song is stored in the temporary file storage area, and thereafter the same operation is repeated. If no identification information is detected in step S9, it is determined whether or not there is an operation stop instruction (S10). If there is no operation instruction, the process returns to step S2, and if there is an operation stop instruction. End recording standby mode.
[0029]
Here, an area for adding information indicating the recording state is provided in the data stored as the regular recording data, and when a decoding error is detected during reproduction, the information indicating it is set. If there is recorded data with a decoding error, the song (program) corresponding to the identification information of the data is set in the recording reservation state, and when the same song (program) is received again, there was an error in the data. Update the part automatically. This update processing operation is shown in FIG.
[0030]
When the recording reservation mode is set by the user's instruction, first, the presence / absence of an error packet is determined (S11), the identity information packet matches are determined (S12), and it is determined whether the packet is normally received (S13). If the packet is received normally, the error packet is rewritten (S14). By the above processing, only the packet having an error can be received and re-recorded.
[0031]
As described above, according to the configuration of the present embodiment, the user can record with a simple operation. In addition, data can be automatically repaired when an error occurs in the received data. Furthermore, since the recorded data is also recorded with identification information added, it can be used for displaying the song title, artist name, etc. when playing back or editing later. .
[0032]
In the above embodiment, the case of recording has been described. However, the same can be applied to the case of recording.
In the above embodiment, identification information data is inserted between songs or programs. However, a silence period may be provided instead of this data to detect this.
[0033]
The recording method of the present invention can also be applied to an information recording apparatus such as a telephone with a recording function (cellular phone). That is, when communication is started in the recording standby mode, the communication content is saved as a temporary file for a certain period, and when a recording start operation is performed during communication within the period, the data of the temporary file is saved. Record including. Thus, even when a recording start operation is performed during communication, data from the beginning of the communication can be saved.
[0034]
【The invention's effect】
As described above, according to the present invention, the digital data can be recorded by a simple operation by the user, the recorded contents can be easily identified, and the data can be automatically restored even if an error occurs in the received data. A broadcast program recording / playback apparatus can be provided.
[Brief description of the drawings]
FIG. 1 is a block diagram showing the configuration of a digital broadcast program recording / playback apparatus according to an embodiment of the present invention.
FIG. 2 is an exemplary view showing the contents of an interface from the demodulator to the demultiplexer according to the embodiment.
FIG. 3 is a view showing a format of recording data in the recording unit of the embodiment.
4 is a diagram showing a configuration of a data pass / fail information field in the management file of FIG. 3;
FIG. 5 is a flowchart showing processing details of a recording standby mode according to the embodiment.
FIG. 6 is a flowchart showing a processing operation for rewriting an error packet when an error occurs during recording in the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... Tuner 12 ... Demodulation part 13 ... Demultiplexing part 14 ... Video decoder 15 ... Display 16 ... Audio | voice decoder 17 ... Speaker 18 ... Control part 19 ... Memory | storage part 20 ... Operation part

Claims (6)

Receives broadcast data of a digital broadcast program, and selects and reproduces a music program in which music data including music data and identification information indicating the content and structure of the music is multiplexed according to a user instruction from the received broadcast data A digital broadcast program recording / playback apparatus for recording music data of the music program in response to a recording instruction when a recording standby mode is designated ,
A recording medium having a temporary area for temporarily recording a song file of the program and a storage area for permanent recording;
Recording standby processing means for temporarily recording a music file containing the music data in a temporary area of the recording medium while reproducing the music data of the music program when the recording standby mode is designated ;
And a recording processing means for transferring the entire music file recorded in the temporary area of the recording medium to the storage area as a storage file when the recording instruction is issued during the recording standby mode. Program recording / playback device. Before type recording standby processing unit, the recognized music file head of music programs on the basis of the identification information, according to claim 1, wherein the digital broadcast program is characterized in that so as to record from the head to the temporary area Recording / playback device. Further, error processing means for detecting that an error has occurred in the music program song file during reception of the broadcast data and adding error information of the file to the song file for recording.
The identification information of the music file to which error information is added is read from the recording medium, and when this identification information is detected from the broadcast data, the music file corresponding to the identification information is extracted from the broadcast data and the temporary data is extracted. stored in the area, according to claim 2, characterized in that it comprises a rewriting processing means for rewriting at least already music file recorded in the storage area error part or saved to a new temporary area all the music files Digital broadcast program recording / playback device. The rewrite processing means searches for identification information in the broadcast data , automatically searches song data that needs to be recorded again from the error information in recorded data, and the same song data is broadcast again. 4. A digital broadcast program recording / reproducing apparatus according to claim 3 , wherein the recording is automatically re-recorded at times. The identification information is a digital broadcast program recording and reproducing apparatus according to any one of claims 2 to 4, characterized in that a silence data. 2. The digital broadcasting according to claim 1, further comprising identification information display means for displaying the contents of identification information added to the music file when the music file recorded in the storage area is reproduced or edited. Program recording / playback device.

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