Information recording medium data processing apparatus and data recording method

A data processing device and information recording technology, applied in the direction of electrical digital data processing, input/output process of data processing, input/output to record carrier, etc., can solve problems such as inability to guarantee writing speed, failure of video processing, etc.

Active Publication Date: 2007-01-03
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, since the minimum writing speed necessary for real-time recording of animation content, etc. cannot be guaranteed, there is a possibility that the recording process may fail.

Method used

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  • Information recording medium data processing apparatus and data recording method
  • Information recording medium data processing apparatus and data recording method
  • Information recording medium data processing apparatus and data recording method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0042] figure 1 It is a block diagram showing a configuration example of a semiconductor recording medium and a data processing device in Embodiment 1 of the present invention.

[0043] The semiconductor recording medium 100 is composed of a host interface unit 110 , a control unit 120 , and a data storage unit 130 .

[0044] The host interface unit 110 exchanges information with the data processing device 200 serving as the host of the semiconductor recording medium 100 .

[0045] The control unit 120 performs internal control of the semiconductor recording medium 100 . The control unit 120 processes the command received by the host interface unit 110 , and notifies the data processing device 200 of the processing result via the host interface unit 110 as necessary. In addition, the data stored in the data storage unit 130 is managed.

[0046] The data storage unit 130 has an area where arbitrary data from the data processing device 200 can be read and written, and where d...

Embodiment approach 2

[0102] Figure 10 A configuration example of a semiconductor recording medium and a data processing device in Embodiment 2 of the present invention is shown in . In this embodiment, in order to eliminate the fragmentation of the recording area of ​​the semiconductor recording medium, the stored data of the semiconductor recording medium is rearranged.

[0103]The data processing device 200b of this embodiment basically has the same configuration as that of the first embodiment, but instead of the effective free area management unit 240, a block judgment unit 260 is provided as a configuration for rearranging stored data of a semiconductor recording medium. One point is different from Embodiment 1.

[0104] The block determination unit 260 determines the “type” of each block in the data storage unit 130 of the semiconductor recording medium 100 . Figure 11 An example of the internal configuration of the block determination unit 260 is shown in . In the present embodiment, t...

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Abstract

A data processing device (200) for maintaining, in a valid free area, information related to a free area in a recording area of ​​an information recording medium (100) including a recording area composed of a plurality of blocks that can be written at a certain speed or higher in the management department (240). The free area that can be written at a certain speed or higher is a block that includes a predetermined number or more of unused clusters. The data processing device (200), when it is necessary to record data in a new free area on the information recording medium (100), refers to the information held in the effective free area management unit (240), searches for the free area, and sends the data to the free area. Data is written in the retrieved area.

Description

technical field [0001] The present invention relates to a data processing device and a data recording method for recording digital data in an information recording medium, and particularly relates to a technique for ensuring the minimum speed of writing processing of digital data. Background technique [0002] As recording media for recording digital data such as music content, video content, and still image content (hereinafter simply referred to as "data"), there are various types such as semiconductor recording media, magnetic disks, optical disks, and magneto-optical disks. In particular, semiconductor recording media are rapidly spreading mainly in portable devices such as digital cameras and mobile phone terminals due to their characteristics of enabling miniaturization and weight reduction. Representative semiconductor recording media include SD memory card (registered trademark), memory stick (registered trademark), and compact flash memory (registered trademark). ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/00G06F3/06G06F12/08
CPCG06F3/064G06F3/0679G06F3/0613G06F12/0866G06F12/00G06F12/14
Inventor 宗广和前田卓治日下博也辻田昭一井上信治
Owner PANASONIC CORP
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