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Recording method for semiconductor memory card, recording playing device and method

A recording method and playback device technology, applied to recording carriers, memory systems, instruments, etc. used in machines, can solve the problems of annoying listeners

Inactive Publication Date: 2009-03-18
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This can be very annoying to the listener if after playing a large number of tracks it returns to start playback

Method used

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  • Recording method for semiconductor memory card, recording playing device and method
  • Recording method for semiconductor memory card, recording playing device and method
  • Recording method for semiconductor memory card, recording playing device and method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0138] {1-1_2} External shape of flash memory card 31

[0139] This description starts with the external shape of the flash memory card 31 . figure 1 represents the shape of the flash memory card 31 when viewed from above, and figure 2 The structure of the flash memory card 31 as seen from below is shown. Such as figure 1 with 2 As shown, flash memory card 31 is about the size of a postage stamp, which is large enough to be held by hand. Its approximate dimensions are 32.0mm long, 24.0mm wide, and 2.0mm thick.

[0140] It can be seen that the flash memory card 31 has 9 connectors on its bottom edge for connecting the card to a portable device, and a protection switch 32 on the side, so that the user can set whether to allow or prohibit the overwriting stored in the flash memory. contents of the memory card.

[0141] {3-1} Physical configuration of flash memory card 31

[0142] FIG. 3 shows the hierarchical structure of the semiconductor memory card (hereinafter referre...

no. 2 example

[0693] {69-1} Overall Composition of the Playlist Manager in the Second Embodiment

[0694] This second embodiment involves an improvement over the semiconductor memory card in the first embodiment, which allows the playback device to resume playback without repeating a previously played track. Fig. 69 shows the internal composition of the Playlist Manager and Track Manager in the second embodiment. The playlist manager and track manager in this second embodiment are different from the playlist manager and track manager shown in FIG. 17 in that the composition of the playlist manager information (PLMGI) This is clearly shown in FIG. 69 and not as in FIG. 17.

[0695] The most important in PLMGI is PLMG_RSM_PL. It indicates a playback resume position, which is stored in a semiconductor memory card to enable a playback device to resume playback of content without repeatedly playing the same data.

[0696] {70-1} Detailed Composition of Playlist Manager Information

[0697] F...

no. 3 example

[0761] {74-1}DPLI_RSM_PL, PLI_RSM_PL

[0762] In this third embodiment, the DPLI and each PLI are provided with their own playback resume information, DPLI_RSM_PL or PLI_RSM_PL, to indicate at which point the playback list previously ended. FIG. 74 shows Default Playlist Information with DPLI_RSM_PL in DPLGI and PLI with PLI_RSM_PL in PLGI.

[0763] DPLI_RSM_PL (PLI_RSM_PL) includes only the track number and playback time, so the difference from PLMG_RSM_PL is that the playback directory number is not required. As another difference, when all tracks in the playback order indicated by DPLI or a PLI have been played completely, the track number in DPLI_RSM_PL (PLI_RSM_PL) is set to "FF" to indicate that the playlist has been played completely .

[0764] The playback apparatus of the third embodiment will be described below.

[0765] When the playback of the audio track specified in the playback order of a PLI is stopped midway, the playback device writes the playback director...

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PUM

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Abstract

A semiconductor memory card stores a plurality of audio objects (AOBs) that compose a plurality of tracks and playlist information showing a reproduction order for the tracks. The semiconductor memory card also stores, as resume information (PLMG_RSM_PL), (1) a Playlist_Number showing which playlist information was used the last time playback was performed for the semiconductor memory card, (2) a Track_Number showing the last track to be played back, and (3) a Playback_Time showing a position at which where playback was stopped as a time expressed in relation to the start of the track.

Description

technical field [0001] The present invention relates to a semiconductor memory card storing audio data and control data, and to a playback device, a recording device, a playback method, a recording method, and a computer-readable recording medium related to the semiconductor memory card. In particular, the present invention relates to improved storage of audio data and control data sold as content by a content distribution service, such as an electronic music distribution service. Background technique [0002] Electronic music sales allow users to purchase and receive music content (such as songs and songbooks) over the Internet. This technology has the potential to greatly increase the market for recorded music and is gradually becoming possible with the necessary hardware infrastructure in place. One way to store music content obtained from electronic music distribution services is on semiconductor memory cards, the portability of which makes them ideal. Therefore, it ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K19/00G06F12/00G11B27/10
Inventor 田川健二松岛秀树广田照人石川智一井上信治小塚雅之
Owner PANASONIC CORP