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Recording and reproducing apparatus

A technology for a reproduction device and a recording medium, which is applied in the directions of digital recording/reproduction, data recording, and record carrier editing, etc., can solve the problem of increasing equipment costs, and achieve the effects of improving convenience, reducing costs, and high data reproducibility.

Inactive Publication Date: 2007-08-29
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the conventional structure described above requires a nonvolatile memory to record restoration data, making the cost of the device high

Method used

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  • Recording and reproducing apparatus
  • Recording and reproducing apparatus
  • Recording and reproducing apparatus

Examples

Experimental program
Comparison scheme
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no. 1 example

[0067] FIG. 1 is a block diagram showing the structure of a recording and reproducing apparatus according to a first embodiment of the present invention. In this embodiment, during the recording operation, recovery data is inserted in advance into a stuffing byte area of ​​TS packets recorded on a recording medium. Then, the management information is restored by using the restoration data during reproduction of the TS packets related to the incorrect recording action.

[0068] In FIG. 1, reference numeral 1 is a recording control section, and reference numeral 2 is a restoration data generation section. Reference numeral 3 is an incorrect recording termination detection section, reference numeral 4 is a reproduction control section, and reference numeral 5 is a recording medium such as a hard disk, DVD-RAM, or the like.

[0069] The recording control section 1 receives an MPEG transport stream TS input from the outside, and generates management information M corresponding to ...

no. 2 example

[0082] FIG. 4 is a block diagram showing the structure of a recording and reproducing apparatus according to a second embodiment of the present invention. In this embodiment, the recovery data is divided into multiple shares. Each piece of divided data is respectively inserted into stuffing byte areas of a plurality of TS packets having specific PIDs, and the TS packets are recorded on a recording medium.

[0083] In FIG. 4, reference numeral 6 is a specific PID detection section. The specific PID detection section 6 detects a specific PID (Packet Identifier) ​​of the input transport stream. Reference numeral 1 is a recording control section similar to the first embodiment, and reference numeral 2 is a restoration data generation section similar to the first embodiment. However, after receiving notification of detection of a specific PID, the recording control section 1 of the present embodiment divides the restored data R received from the restored data generating section 2...

no. 3 example

[0090] Fig. 7 is a block diagram showing the structure of a recording and reproducing apparatus according to a third embodiment of the present invention. In the present embodiment, during the reproduction operation, the original restored data is generated from the divided data, and the management information is restored by using the restored data. At the same time, the data in the stuffing byte area replaced with the divided data is reconstructed to its original state.

[0091] In FIG. 7, reference numeral 7 is a specific PID detection section. The specific PID detection section 7 detects a specific PID in the transport stream output from the reproduction control section 4 . The specific PID here refers to a single PID pre-designated as a storage package for the divided data. After receiving the recording incorrect termination notification, the specific PID detection section 7 starts to act. Reference numeral 8 is a recovery data generation section. The restoration data ge...

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Abstract

In the recording and reproducing apparatus, managing information and recovering data for a TS packet is inserted in the TS packet of a recording-target transport stream, and the TS packet is recorded on a recording medium. At the time of reproducing action performed after recording halt processing is not properly ended, the recovering data is extracted from the TS packet that is read out from the recording medium. The managing information is recovered from the recovering data that has been extracted. The TS packet is reproduced from the recording medium based on the managing information that has been recovered.

Description

technical field [0001] The present invention relates to a recording and reproducing apparatus using a hard disk or an optical disk as a recording medium. More specifically, the present invention relates to techniques for correcting inconsistencies between transport streams and management information during recording actions and editing actions, caused by improper termination of the system. Background technique [0002] In recording and reproducing devices that record MPEG digital video content transport streams in real time, such as in HDD, DVD (Digital Versatile Disc), blank areas are searched for when video data is recorded on recording media, and the video data is discontinuously is recorded on a recording medium, unlike the case with a video tape recorder. Thus, management information is required to manage addresses of video data recorded on recording media. [0003] For this reason, when video data is recorded, the management information is refreshed each time a given...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B27/00G11B27/034G11B27/32G11B27/30G11B20/10H04N5/92G11B20/12
CPCH04N21/434G11B27/36H04N21/4334H04N21/236H04N21/4348H04N21/4325H04N21/435G11B27/3027H04N21/235H04N9/8042G11B27/034
Inventor 簗濑一英马场由香里
Owner PANASONIC CORP