Unlock instant, AI-driven research and patent intelligence for your innovation.

Recording apparatus, recording method, and recording medium

By dividing the index information into fixed and variable length parts, and only updating the variable part, the problem of long index file rewriting time is solved, and the editing and retrieval efficiency is improved.

Inactive Publication Date: 2004-02-04
SONY GROUP CORP
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, when a large number of files are managed by one index file, the data volume of the index file is large, and therefore, there is a problem that it takes a long time to write the index file on the recording medium.
Also, since writing takes a long time depending on the material or recording method of the recording medium, there is a problem that it takes a long time to write the index file

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0033] FIG. 1 is a block diagram showing an exemplary configuration of a digital recording / reproducing device.

[0034] In FIG. 1, the digital recording / reproducing apparatus is configured to include a video encoder 11, an audio encoder 12, a video decoder 13, an audio decoder 14, a file creator 15, a file decoder 16, memories 17 and 20, a memory Controller 18, system control microcomputer 19, error correction encoder / decoder 21, drive control microcomputer 22, data modulator / demodulator 23, magnetic field modulation driver 24, operating part 26, servo circuit 30, motor 31, Magnetic head 32, and optical pickup 33.

[0035] A video signal is supplied from a video input terminal to a video encoder 11 for compression and encoding. The audio signal is supplied from the audio input terminal to the audio encoder 12 for compression and encoding. The respective outputs from the video encoder 11 and audio encoder 13 are called elementary streams.

[0036] In this embodiment, a digital...

no. 2 example

[0136] In the first embodiment, a property can be divided into a fixed-length part and a variable-length part by managing and utilizing the track atom (extended property) and the 1st bit of the item property as another track. In the second embodiment, the properties can be divided into fixed-length parts and variable-length parts using 1 bit of item properties and folder properties.

[0137] Since the recording / reproducing device and the camera-combined data recording / reproducing device in the second embodiment are similar to the recording / reproducing device and the camera-combined data recording / reproducing device shown in FIG. 1 and FIGS. Go without saying.

[0138] Fig. 10 is a diagram showing an exemplary index file in the second embodiment created using a QuickTime movie file.

[0139] In FIG. 10 , an index file is configured to include an index atom 301 and an index data atom 302 .

[0140] The index data atom 302 holds real data of basic nature, text, thumbnail image,...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A recording apparatus, a recording method, a recording medium, and an electronic camera which create an index file (IF) for holding index information of a file separately as a fixed data length portion and a variable data length portion and record the index file on the recording medium. The recording apparatus comprises creating means for creating the IF including a plurality of areas to each of which a unique identifier is assigned and recording means for recording the IF on the recording medium, wherein the creating means divides file attribute information into first attribute information of a fixed data length and second attribute information of a variable data length, holds separately a plurality pieces of first attribute information associated with a plurality of files, respectively, and a plurality pieces of second attribute information associated with the plurality of first attribute information, respectively, in the plurality of areas while the plurality pieces of first attribute information are associated with the plurality of files, respectively, and the plurality pieces of second attribute information are associated with the plurality pieces of first attribute information, respectively, and the creating means collects areas of the plurality of areas with a fixed data length as a first area group, and collects areas with a variable data length as a second area group, and holds them in the IF.

Description

technical field [0001] The present invention relates to a recording device for recording video data, audio data, etc. on a recording medium, and more particularly relates to separately storing index information for recording a file on a recording medium into a part whose data length is fixed and a data length that is variable The index file created by the part of the length is recorded on a recording medium; and, the present invention also relates to a recording method used in such a recording device and a recording medium for recording an index file, and also relates to a recording medium equipped with such a An electronic video camera of a recording device. Background technique [0002] Conventionally, in recording equipment for recording video data and audio data, etc., for example, in a camcorder (camcorder), the array data of several shots recorded are recorded on a disk-shaped recording medium, such as a magneto-optical disk or in individual files on the disc. A know...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/00H04N23/40G11B20/10G11B20/12G11B20/18G11B27/00G11B27/034G11B27/10G11B27/32G11B27/34H04N5/76H04N5/77H04N5/85H04N5/91H04N5/92H04N9/804H04N9/806H04N9/82
CPCG11B2220/2525G11B27/329H04N9/8063G11B27/034G11B27/105G11B2220/218H04N5/772G11B20/18G11B27/34G11B2220/2562H04N5/85H04N9/8205H04N5/9201G11B2220/216G11B2220/2545H04N9/8042G11B27/10
Owner SONY GROUP CORP