RECORDING DEVICE, RECORDING METHOD, COMPUTER PROGRAM, AND RECORDING MEDIUM

• US 20090024651A1
• Filed: 07/17/2008
• Published: 01/22/2009
• Est. Priority Date: 07/19/2007
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Narita, Tetsuya, Shibata, Yoshiaki, Kawahara, Minoru
• Granted Patent: US 8,161,086 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 16/71 Indexing; Data structures therefor; Storage structures
• CPC Class Codes: G11B 27/031 Electronic editing of digitised analogue information signals, e.g. audio or video signals
• CPC Class Codes: G11B 27/323 Time code signal, e.g. on a cue track as SMPTE- or EBU-time code

Abstract

There is provided a recording device for generating and coding metadata, the recording device including a metadata describing part for describing the metadata; and a coding part for coding the metadata described in the metadata describing part in a binary format, and generating coded data; wherein the metadata describing part describes alternative information for embedding alternative data to the coded data when data is not present for a non-essential item in the metadata; and the coding part performs coding with the alternative data embedded when the alternative information is described.

Claims

1. A recording device for generating and coding metadata, the recording device comprising:

a metadata describing part for describing the metadata; and

a coding part for coding the metadata described in the metadata describing part in a binary format, and generating coded data;

wherein

the metadata describing part describes alternative information for embedding alternative data to the coded data when data is not present for a non-essential item in the metadata; and

the coding part performs coding with the alternative data embedded when the alternative information is described.

2. The recording device according to claim 1, wherein the metadata describing part describes the alternative information with an element name having a predetermined letter string added to an element name of the non-essential item in the metadata.

3. The recording device according to claim 1, wherein the coding part performs coding with 1 added before the alternative data and 0 added before data other than the alternative data when generating the coded data.

4. A recording method for generating and coding metadata, the recording method comprising the steps of:

describing the metadata; and

coding the metadata described in the metadata describing step in a binary format, and generating coded data;

wherein

in the metadata describing step, alternative information for embedding alternative data to the coded data is described when data is not present for a non-essential item in the metadata; and

in the coding step, coding is performed with the alternative data embedded when the alternative information is described.

5. A computer program for generating and coding metadata, the computer program comprising the steps of:

describing the metadata; and

coding the metadata described in the metadata describing step in a binary format, and generating coded data;

wherein

in the metadata generating step, alternative information for embedding alternative data to the coded data is described when data is not present for a non-essential item in the metadata; and

in the coding step, coding is performed with the alternative data embedded when the alternative information is described.

6. A recording medium recorded with a computer readable computer program according to claim 5.