Recording medium, reproducing method thereof and reproducing apparatus thereof

• US 20050249375A1
• Filed: 04/25/2005
• Published: 11/10/2005
• Est. Priority Date: 04/26/2004
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yoo, Jea Yong, Kim, Byung Jin, Seo, Kang Soo
• Granted Patent: US 7,634,175 B2
• Time in Patent Office: Days
• US Class Current: 382/100
• CPC Class Codes: G11B 2220/2541 Blu-ray discs; Blue laser DVR discs
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/322 used signal is digitally coded
• CPC Class Codes: H04N 21/42653 for processing graphics
• CPC Class Codes: H04N 21/43074 of additional data with content streams on the same device, e.g. of EPG data or interactive icon with a TV program
• CPC Class Codes: H04N 21/4325 by playing back content from the storage medium reproduction of recorded television signals H04N5/76; reproduction of recorded television signals H04N9/79
• CPC Class Codes: H04N 21/4334 Recording operations recording of a television signal H04N5/76; arrangements for recording or accumulating broadcast information or broadcast-related information H04H60/27
• CPC Class Codes: H04N 21/4348 Demultiplexing of additional data and video streams
• CPC Class Codes: H04N 21/44004 involving video buffer management, e.g. video decoder buffer or video display buffer
• CPC Class Codes: H04N 21/488 Data services, e.g. news ticker systems specially adapted for using meteorological information in broadcast systems H04H60/71
• CPC Class Codes: H04N 21/4884 for displaying subtitles
• CPC Class Codes: H04N 21/8146 involving graphical data, e.g. 3D object, 2D graphics
• CPC Class Codes: H04N 5/04 Synchronising for television systems using pulse code modulation H04N7/56
• CPC Class Codes: H04N 5/44504 Circuit details of the additional information generator, e.g. details of the character or graphics signal generator, overlay mixing circuits
• CPC Class Codes: H04N 5/85 on discs or drums
• CPC Class Codes: H04N 9/8042 involving data reduction
• CPC Class Codes: H04N 9/8205 involving the multiplexing of an additional signal and the colour video signal
• CPC Class Codes: H04N 9/8238 for teletext

Abstract

The present invention provides a recording medium, reproducing method thereof and reproducing apparatus thereof. The present invention includes a text subtitle stream including at least one dialog presentation segment (DPS) and one dialog style segment (DSS) and a clipinfo file (*,clpi) as reproduction management information to reproduce the text subtitle stream, wherein map information mapped to a dialog presentation segment (DPS) within the text subtitle stream is recorded in the clipinfo file.

Claims

1. A recording medium comprising:

a text subtitle stream including at least one dialog presentation segment (DPS) and one dialog style segment (DSS); and

a clipinfo file (*,clpi) as reproduction management information to reproduce the text subtitle stream,

wherein map information mapped to a dialog presentation segment (DPS) within the text subtitle stream is recorded in the clipinfo file.

2. The recording medium of claim 1, wherein the text subtitle stream includes one ‘

STC_sequence’ and

wherein the clipinfo file (*.clpi) includes information indicating a number of the ‘

STC_sequence’

.

3. The recording medium of claim 1, wherein the clipinfo file (*.clpi) includes language information (language_code) of the text subtitle stream.

4. The recording medium of claim 1, wherein the clipinfo file (*.clpi) includes font information utilized for the text subtitle stream.

5. A recording medium comprising:

a main data stream;

an auxiliary data stream utilized in reproducing the main data stream; and

a clipinfo file (*.clpi) as reproduction management information for reproducing the main and auxiliary data streams, respectively,

wherein at least two map informations are recorded in the clipinfo file for the main data stream and wherein one map information is recorded in the clipinfo file for the auxiliary data stream.

6. The recording medium of claim 5, wherein the auxiliary data stream is a text subtitle stream.

7. A recording medium comprising:

an auxiliary data stream utilized in reproducing a main data stream; and

a reproduction management file as reproduction management information for reproducing the auxiliary data stream,

wherein the reproduction management file includes map information having a plurality of entries mapped to the auxiliary data stream and wherein each of the entries includes time information and address information.

8. The recording medium of claim 7, wherein the reproduction management file is provided per the auxiliary data stream.

9. The recording medium of claim 7, wherein the map information is mapped to a specific unit of the auxiliary data stream.

10. The recording medium of claim 7, wherein the map information is EP_map.

11. The recording medium of claim 7, wherein the map information is TMAP.

12. A recording medium comprising:

a main AV stream;

a text subtitle stream reproduced by being synchronized with the main AV stream; and

clipinfo files (*,clpi) as reproduction management information for reproducing the main AV stream and the text subtitle stream, respectively,

wherein the main AV stream includes at least one ‘

STC_sequence’

, wherein the text subtitle stream includes one ‘

STC_sequence’ and

wherein each of the clipinfo files includes a number of the ‘

STC_sequence’

.

13. In reproducing a main AV stream and a text subtitle stream associated with the main AV stream, a text subtitle stream reproducing method of a recording medium, comprising the steps of:

storing the text subtitle stream by preloading;

decoding the text subtitle stream using mapping information provided from a reproduction management file for reproducing/managing the text subtitle stream; and

displaying the decoded text subtitle stream.

14. In reproducing a recording medium in which a main data stream and an auxiliary data stream utilized in reproducing the main data stream, a recording medium reproducing method comprising the steps of:

reading reproduction management information from reproduction management files for reproducing the main and auxiliary data streams, respectively; and

reproducing the main and auxiliary data streams utilizing the read reproduction management information,

wherein at least two map informations are read from the reproduction management file for the main data stream and wherein one map information is read from the reproduction management file for the auxiliary data stream.

15. In reproducing a recording medium in which an auxiliary data stream utilized in reproducing a main data stream, a recording medium reproducing method comprising the steps of:

reading reproduction management information from a reproduction management file for reproducing the auxiliary data streams; and

reproducing the auxiliary data stream utilizing the read reproduction management information,

wherein the reproduction management file includes map information having a plurality of entries mapped to the auxiliary data stream and wherein each of the entries includes time information and address information.

16. In reproducing a main AV stream and a text subtitle stream associated with the main AV stream, a text subtitle reproducing apparatus for a recording medium, comprising:

a buffer storing the text subtitle stream by preloading;

a decoder decoding the text subtitle stream using mapping information provided from a reproduction management file for reproducing/managing the text subtitle stream; and

a graphic plan displaying the decoded text subtitle stream.

17. The text subtitle reproducing apparatus of claim 16, the buffer comprising:

a preloading buffer in which the text subtitle stream is preloaded; and

a font preloading buffer in which font information of the text subtitle stream is preloaded.