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Recorder

A recording device and recording medium technology, which is applied in the direction of combined recording, data recording, recording signal processing, etc., can solve the problems of heavy burden, lack of widespread popularity, etc., and achieve the effect of shortening time

Inactive Publication Date: 2007-08-01
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the above-mentioned method, it is necessary to install a plurality of processors in the same device, and therefore, the cost increase in manufacturing the recording device is imposed on the manufacturer.
This is equivalent to imposing a heavier burden on each manufacturer struggling with the price reduction competition of recording devices. Although it is not very serious, it does not have the nature of widespread popularity.

Method used

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Experimental program
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no. 1 approach

[0096] An embodiment of the recording device 100 according to the present invention will be described. First, an aspect related to usage behavior among implementation behaviors of the recording device 100 according to the present invention will be described. The recording device 100 according to this embodiment is used by users as a system as shown in FIG. 1 . The system shown in FIG. 1 includes a recording device 100 , a digital television 200 , a personal computer 300 , a game machine 400 , and a home network 500 .

[0097] The recording device 100 is a device that receives a broadcast digital stream and writes it on a recording medium. Also, the recording device 100 can write the same digital stream as the written digital stream into another recording medium. For example, the digital stream of MPEG2-TS format recorded on HDD is converted into the digital stream of MPEG2-PS format in DVD and written. The recording device 100 divides the digital stream to be transcoded, an...

no. 2 approach

[0146] In the first embodiment, the detection by the usable device detection unit 113 is performed only once before transcoding, and in the second embodiment, the detection by the usable device detection unit 113 is also performed periodically during code conversion. Implementation of detection. FIG. 16 shows an example of a case where detection is performed periodically. FIG. 16( a ) is a diagram showing the detected devices at each time when detection of usable devices is performed every 10 minutes. In the detection at the time of 0 minutes, three devices, the digital TV 200, the personal computer 300, and the game machine 400, were detected. At the time of 10 minutes, the two devices of the personal computer 300 and the game machine 400 were detected. Only one device, the digital television 200, is detected. FIG. 16( b ) is a diagram showing divisions of divided digital streams assigned to each of the three devices detected at 0 minutes. A partial digital stream equivale...

no. 3 approach

[0149] In the first embodiment, the recording device 100 does not perform transcoding but distributes all processing to the auxiliary equipment. However, the third embodiment is an embodiment in which the recording device 100 also performs transcoding processing. FIG. 18 shows an example of the copy screen 30 displayed by the display control unit 112 at this time. First, the user selects which recording medium to copy, and selects the title of the digital stream to be code-converted. Then, it is possible to select whether transcoding is performed solely by the recording apparatus 100 or distributed processing is performed using auxiliary equipment. When non-use is selected, transcoding is performed by the recording device 100 alone. When the user selects to use an auxiliary device for distributed processing, the usable auxiliary device is detected by the usable device detection unit 113 and a list thereof is presented to the user. Also, when transcoding is possible with this...

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Abstract

A recording apparatus for copying a digital stream recorded on a first recording medium using a code format compatible with the first recording medium to a second recording medium after the digital stream has been converted to a code format compatible with the second recording medium, comprising: a detection unit operable to detect a plurality of devices that are available for distributed processing from devices connected to the recording apparatus via a network; an allocation unit operable to divide the digital stream at one or more predetermined points on a playback time axis and to allocate the divided portions to the detected devices respectively; a transmission unit operable to transmit the allocated portions to the respective detected devices; a control unit operable to control the detected devices to perform transcoding for converting a code format of the allocated portions to the code format compatible with the second recording device; and a writing unit operable to receive converted portions resulting from the transcoding from the detected devices and to write the received portions to the second recording medium.

Description

technical field [0001] The present invention relates to a recording device for recording a digital stream on a recording medium. Background technique [0002] Most recent recording devices include a plurality of recording media. Such as HDD, DVD, SD memory card, etc. In such a recording device, transcoding is required to copy a digital stream between different media. Transcoding refers to the process of converting a digital stream encoded in a certain format into another encoded format, such as when converting an MPEG2-format digital stream recorded on an HDD to an MPEG4-format digital stream on an SD Executed when the MPEG2-TS format digital stream recorded on the HDD is converted to the MPEG2-PS format digital stream on the DVD. This transcoding enables copying of digital streams between HDDs to SD memory cards and from HDDs to media called DVDs. The same time as the reproduction time of the digital stream is required in the transcoding process. This is because the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/91G11B20/10G11B20/12G11B27/00
CPCG11B20/00086G11B20/1262G11B2220/412G11B20/00188G11B20/0021H04N5/781G11B20/00507H04N9/8042G11B20/00688G11B27/034G11B20/00173H04N5/765H04N9/7921H04N5/91H04N5/907
Inventor 岩田芳明野仲真佐男大森基司山内一彦
Owner PANASONIC CORP
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