Digital broadcasting recording/reproducing apparatus and method for the same

• US 20060211370A1
• Filed: 03/14/2006
• Published: 09/21/2006
• Est. Priority Date: 03/15/2005
• Status: Abandoned Application

• Current Assignee: NEC Personal Products Limited (NEC Corporation)
• Original Assignee: NEC Personal Products Limited (NEC Corporation)
• Inventors: Hasegawa, Satoshi, Nakaji, Hiroshi
• Application Number:
  US11/374,885
• Publication Number:
  US 20060211370A1
• Time in Patent Office: Days
• US Class Current: 455/3.60
• CPC Class Codes: H04N 5/76 Television signal recording
• CPC Class Codes: H04N 5/781 on disks or drums
• CPC Class Codes: H04N 5/783 Adaptations for reproducing at a rate different from the recording rate
• CPC Class Codes: H04N 9/8042 involving data reduction
• CPC Class Codes: H04N 9/8205 involving the multiplexing of an additional signal and the colour video signal
• CPC Class Codes: Y02E 30/30 Nuclear fission reactors

Abstract

In digital broadcasting, a stream signal includes a data stream in data broadcasting, and a video data stream and an audio data stream in main broadcasting, which streams are combined. A recording/reproducing apparatus includes a storage unit; a read/write section configured to access the storage unit; a separating section configured to separate the data stream from the stream signal in a real time mode and a record mode, and to output a combined data stream of the video data stream and the audio data stream to the read/write section in the record mode; and a processing section configured to receive the data stream from the separating section in the real time mode and the record mode and to output a data corresponding to the data stream to the read/write section in the record mode. The read/write section records the combined data stream in the storage unit and the data in the storage unit independently from the combined data stream.

Claims

1. A recording/reproducing apparatus for a stream signal in digital broadcasting, wherein said stream signal comprises a data stream in data broadcasting, and a video data stream and an audio data stream in main broadcasting, which streams are combined, comprising:

a storage unit;

a read/write section configured to access said storage unit;

a separating section configured to separate said data stream from said stream signal in a real time mode and a record mode, and to output a combined data stream of said video data stream and said audio data stream to said read/write section in the record mode; and

a processing section configured to receive said data stream from said separating section in the real time mode and the record mode and to output a data corresponding to said data stream to said read/write section in the record mode,

wherein said read/write section records said combined data stream in said storage unit and said data in said storage unit independently from said combined data stream.

2. The recording/reproducing apparatus according to claim 1, wherein said data is one of a module data extracted from said data stream and a file data obtained from said module data.

3. The recording/reproducing apparatus according to claim 2, wherein said processing section comprises:

a data acquiring section configured to receive said data stream from said separating section in the real time mode and the record mode and to extract said module data from said data stream; and

a file processing section configured to generate said file data from said module data, and

said data acquiring section outputs one of said module data and said file data as said data to said read/write section in the record mode.

4. The recording/reproducing apparatus according to claim 1, wherein said processing section generates a data management table which contains an identifier to identify said data, and start and end times of the record of said data, and outputs said data management table to said read/write section, which records said data management table in said storage unit.

5. The recording/reproducing apparatus according to claim 4, wherein when an event has occurred in said data, said processing section generates an event management table which contains a sort of said event, an occurrence time of said event, said identifier of said data and an additional data to said data, and outputs said event management table to said read/write section, which records said event management table in said storage unit.

6. The recording/reproducing apparatus according to claim 1, wherein said read/write section reads out said combined data stream and said data from said storage unit in a reproduction mode,

said separating section separates said combined data stream received in the real time mode or read out from said storage unit in the reproduction mode into said video data steam and said audio data stream,

said processing section generates a video data component and an audio data component from said data received from said separating section in the real time mode and read out from said storage unit by said read/write section in the reproduction mode,

said recording/reproducing apparatus further comprises:

a video decoder section configured to decode said video data stream from said separating section in the real time mode and the reproduction mode to generate a decoded video data stream;

an audio decoder section configured to decode said audio data stream from said separating section in the real time mode and the reproduction mode to generate a decoded audio data stream;

a video synthesizing section configured to synthesize the decoded video data stream and said video data component from said processing section and to output a synthetic video data to an external display unit; and

an audio synthesizing section configured to synthesize the decoded audio data stream and said audio data component from said processing section and to output a synthetic audio data to an external audio output unit.

7. The recording/reproducing apparatus according to claim 6, wherein said data is one of a module data extracted from said data stream and a file data obtained from said module data, and

said processing section comprises:

a data acquiring section configured to receive said data stream from said separating section in the real time mode and the record mode and from said read/write section in the reproduction mode and to generate said module data from said data stream; and

a file processing section configured to generate said file data from said module data and to generates said video data component and said audio data component from said file data in the real time mode and the reproduction mode.

8. The recording/reproducing apparatus according to claim 6, wherein said processing section generates a data management table which contains an identifier to identify said data, and start and end times of the record of said data, and outputs said data management table to said read/write section, which records said data management table in said storage unit,

said read/write section reads out said combined data stream, said data and said data management table from said storage unit, and

said processing section reproduces said data in synchronization with said video data stream and said audio data stream based on said data management table.

9. The recording/reproducing apparatus according to claim 8, wherein when an event has occurred in said data, said processing section generates an event management table which contains a sort of said event, an occurrence time of said event, said identifier of said data and an additional data to said data, and outputs said event management table to said read/write section, which records said event management table in said storage unit,

said read/write section reads out said combined data stream, said data, said data management table and said event management table from said storage unit, and

said processing section reproduces said data in synchronization with said video data stream and said audio data stream based on said data management table and said event management table.

10. A method of recording/reproducing a stream signal in digital broadcasting, wherein said stream signal comprises a data stream in data broadcasting, and a video data stream and an audio data stream in main broadcasting, which streams are combined, comprising:

receiving said stream signal in a real time mode and a record mode;

separating said stream signal into said data stream and a combined data stream of said video data stream and said audio data stream in the real time mode and the record mode;

recording said combined data stream in a storage unit in the record mode;

generating a data corresponding to said data stream in the real time mode and the record mode;

recording said data in said storage unit independently from said combined data stream;

separating said combined data stream into said vide data stream and said audio data stream in the real time mode;

decoding said vide data stream and said audio data stream to generate a decoded vide data stream and a decoded audio data stream, respectively in the real time mode;

generating a video data component and an audio data component from said data in the real time mode; and

synthesizing said decoded vide data stream and said decoded audio data stream with said video data component and said audio data component to generate a synthetic video data to an external display unit and a synthetic audio data to an external audio output unit, respectively, in the real time mode.

11. The method according to claim 10, further comprising:

generating a data management table which contains an identifier to identify said data, and start and end times of the record of said data; and

recording said data management table in said storage unit.

12. The method according to claim 11, further comprising:

when an event has occurred in said data, generating an event management table which contains a sort of said event, an occurrence time of said event, said identifier of said data and an additional data to said data; and

recording said event management table in said storage unit.

13. The method according to claim 10, further comprising:

reading out said combined data stream and said data from said storage unit in a reproduction mode;

separating said combined data stream into said video data steam and said audio data stream in the reproduction mode;

generating said video data component and said audio data component from the read-out data in the reproduction mode;

decoding said vide data stream and said audio data stream to generate a decoded vide data stream and a decoded audio data stream, respectively in the reproduction mode;

generating a video data component and an audio data component from said data in the reproduction mode; and

synthesizing said decoded vide data stream and said decoded audio data stream with said video data component and said audio data component to generate a synthetic video data to an external display unit and a synthetic audio data to an external audio output unit, respectively, in the reproduction mode.

14. The method according to claim 11, further comprising:

reading out said data management table from said storage unit in the reproduction mode; and

reproducing said data in synchronization with said video data stream and said audio data stream based on said data management table.

15. The method according to claim 12, further comprising:

reading out said event management table from said storage unit in the reproduction mode; and

reproducing said data in synchronization with said video data stream and said audio data stream based on said data management table and said event management table.

16. The method according to claim 10, wherein said generating a data corresponding to said data stream comprises:

generating as said data, a module data from said data stream.

17. The method according to claim 10, wherein said generating a data corresponding to said data stream comprises:

generating a module data from said data stream; and

generating as said data, a file data from said module data.