Recording medium and method and apparatus for decoding text subtitle streams

• US 7,643,732 B2
• Filed: 01/12/2005
• Issued: 01/05/2010
• Est. Priority Date: 02/10/2004
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Seung Hoon, Park, Sung Wan, Yoo, Jea Yong, Kim, Byung Jin, Seo, Kang Soo, Shim, Young Sun
• Primary Examiner(s): Nguyen; Huy T
• Assistant Examiner(s): Zhao; Daquan
• Application Number:
  US11/033,494
• Publication Number:
  US 20050207736A1
• Time in Patent Office: 1,819 Days
• Field of Search: 386125-126, 386/95
• US Class Current: 386/244
• 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: H04N 21/426 Internal components of the client ; Characteristics thereof H04N5/44 takes precedence
• CPC Class Codes: H04N 21/42646 for reading from or writing on a non-volatile solid state storage medium, e.g. DVD, CD-ROM
• CPC Class Codes: H04N 21/4316 for displaying supplemental content in a region of the screen, e.g. an advertisement in a separate window
• 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 21/434 Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream demultiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00
• CPC Class Codes: H04N 21/4884 for displaying subtitles
• CPC Class Codes: H04N 5/781 on disks or drums
• CPC Class Codes: H04N 9/8042 involving data reduction
• CPC Class Codes: H04N 9/8233 the additional signal being a character code signal

Abstract

At least one text subtitle stream is recorded on a recording medium. Each text subtitle stream includes a dialog style segment defining a set of region styles and at least one dialog presentation segment. Each dialog presentation segment contains at least one region of dialog text and being linked to at least one of the set of region styles. The dialog style segment further defines a set of user control styles for each region style. Each user control style is selectable by a user and is configured to change at least one of region presentation properties specified by a corresponding region style.

Claims

1. A recording medium including text subtitle stream recorded by a recording apparatus and configured to be reproduced by a reproducing apparatus, the recording medium comprising:

the text subtitle stream recorded by the recording apparatus and configured to be reproduced by a reproducing apparatus including a style segment defining at least one region style to be applied to at least one region, the style segment further defining at least one set of user control style for each of the at least one region style, each of the at least one set of user control style including at least one user control style being selectable for changing at least one of region presentation properties specified by a corresponding region style,

wherein the style segment includes a player style flag recorded by the recording apparatus and configured to be reproduced by a reproducing apparatus indicating whether a player is permitted to use its own player style in addition to the at least one region style defined in the style segment of the text subtitle stream in the recording medium,

wherein each of the at least one set of user control style specifies a direction and a delta of a change in the at least one of region presentation properties specified by the corresponding region style.

2. The recording medium of claim 1, wherein the style segment includes a data field indicating a number of the at least one region style.

3. The recording medium of claim 2, wherein the number of the at least one region style is less than or equal to 60.

4. The recording medium of claim 1, wherein the style segment includes a data field indicating a number of the at least one set of user control style defined in the style segment for each of the at least one region style.

5. The recording medium of claim 4, wherein the number of the at least one set of user control style defined for each of the at least one region style is less than or equal to 25.

6. The recording medium of claim 1, wherein the region presentation properties include at least one of a region horizontal position, a region vertical position, a text horizontal position, a text vertical position, a line space, and a font size.

7. The recording medium of claim 1, wherein each of the at least one user control style specifies a direction and a delta of a change in at least one of a region horizontal position, a region vertical position, a text horizontal position, a text vertical position, a line space, and a font size, which are specified in the corresponding region style.

8. A recording medium including text subtitle stream recorded by a recording apparatus and configured to be reproduced by a reproducing apparatus, the recording medium comprising:

a data area storing the text subtitle stream, the text subtitle stream including a style segment defining at least one region style and at least one presentation segment, each of the at least one presentation segment containing at least one region of text and being linked to one of the at least one region style, the style segment further defining at least one set of user control style for each of the at least one region style, each of the at least one set of user control style including at least one user control style being selectable for changing at least one of region presentation properties specified by a corresponding region style,

wherein the style segment includes a player style flag indicating whether a player is permitted to use its own player style in addition to the at least one region style defined in the style segment of the text subtitle stream in the recording medium,

wherein each of the at least one set of user control style specifies a direction and a delta of a change in the at least one of region presentation properties specified by the corresponding region style.

9. A method for decoding a text subtitle stream recorded on a recording medium, the method comprising:

loading the text subtitle stream into a subtitle loading buffer, the text subtitle stream including a style segment defining at least one region style and at least one presentation segment, each of the at least one presentation segment containing at least one region of text and being linked to one of the at least one region style, the style segment further defining at least one set of user control style for each of the at least one region style, each of the at least one set of user control style including at least one user control style being selectable for changing at least one region presentation property specified by a corresponding region style; and

decoding each of the at least one presentation segment using the linked at least one region style and one of the at least one set of user control style,

wherein the style segment includes a player style flag indicating whether a player is permitted to use its own player style in addition to the at least one region style defined in the style segment of the text subtitle stream in the recording medium,

wherein each of the at least one set of user control style specifies a direction and a delta of a change in the at least one of region presentation properties specified by the corresponding region style.

10. The method of claim 9, wherein the region presentation properties include at least one of a region horizontal position, a region vertical position, a text horizontal position, a text vertical position, a line space, and a font size.

11. The method of claim 9, wherein each of the at least one user control style specifies a direction and a delta of a change in at least one of a region horizontal position, a region vertical position, a text horizontal position, a text vertical position, a line space, and a font size, which are specified in the corresponding region style.

12. The method of claim 9, further comprising:

receiving a user command which selects one of the set of user control styles;

obtaining final region presentation properties by applying the direction and the delta of a change specified by the selected user control style to original region presentation properties specified by the corresponding region style; and

decoding the presentation segment using the final region presentation properties.

13. An apparatus for decoding a text subtitle stream recorded on a recording medium, the method comprising:

a subtitle loading buffer configured to load the text subtitle stream, the loaded text subtitle stream including a style segment defining at least one region style and at least one presentation segment, each of the at least one presentation segment containing at least one region of text and being linked to one of the at least one region style, the style segment further defining at least one set of user control style for each of the at least one region style, each of the at least one set of user control style including at least one user control style being selectable for changing at least one of region presentation properties specified by a corresponding region style; and

a text subtitle decoder configured to decode each of the at least one presentation segment using the linked region style and one of the at least one user control style,

wherein the style segment includes a player style flag indicating whether a player is permitted to use its own player style in addition to at least one region style defined in the style segment of the text subtitle stream in the recording medium,

wherein each of the at least one set of user control style specifies a direction and a delta of a change in the at least one of region presentation properties specified by the corresponding region style.

14. The apparatus of claim 13, wherein the subtitle loading buffer is configured to load the text subtitle stream including the style segment which includes a data field indicating a number of the set of the at least one user control style defined in the style segment for each of the least one region style.

15. The apparatus of claim 14, wherein the subtitle loading buffer is configured to load the text subtitle stream including the style segment which defines the at least one set of user control style, the number of the at least one set of user control style defined for each of the at least one region style is less than or equal to 25.

16. The apparatus of claim 13, wherein the text subtitle decoder is configured to receive a user command which selects one of the set of user control styles, obtain final region presentation properties by applying the direction and the delta of a change specified by the selected user control style to original region presentation properties specified by the corresponding region style;

and decode the presentation segment using the final region presentation properties.

17. An apparatus for recording text subtitle stream, the apparatus comprising:

a pickup configured to record data on a recording medium; and

a controller configured to control the pickup to record the text subtitle stream, the text subtitle stream including a style segment defining at least one region style to be applied to at least one region, the style segment further defining at least one set of user control style for each of the at least one region style, each of the at least one set of user control style including at least one user control style being selectable for changing at least one of region presentation properties specified by a corresponding region style,

wherein the style segment includes a player style flag indicating whether a player is permitted to use its own player style in addition to the at least one region style defined in the style segment of the text subtitle stream in the recording medium,

wherein each of the at least one set of user control style specifies a direction and a delta of a change in the at least one of region presentation properties specified by the corresponding region style.

18. The apparatus of claim 17, wherein the controller is configured to control the pickup to record the text subtitle stream, the text subtitle stream including the style segment which includes a data field indicating a number of the at least one set of user control style defined in the style segment for each of the at least one region style.

19. The apparatus of claim 18, wherein the controller is configured to control the pickup to record the text subtitle stream, the text subtitle stream including the style segment which defines the at least one set of user control style, the number of the at least one set of user control style defined for each of the at least one region style is less than or equal to 25.

20. An apparatus for reproducing text subtitle stream, the apparatus comprising:

a pickup configured to reproduce data recorded on a recording medium; and

a controller configured to control the pickup to reproduce the text subtitle stream, the text subtitle stream including a style segment defining at least one region style to be applied to at least one region, the style segment further defining at least one set of user control style for each of the at least one region style, each of the at least one set of user control style being selectable for changing at least one of region presentation properties specified by a corresponding region style,

wherein the style segment includes a player style flag indicating whether a player is permitted to use its own player style in addition to the at least one region style defined in the style segment of the text subtitle stream in the recording mediums,

wherein each of the at least one set of user control style specifies a direction and a delta of a change in the at least one of region presentation properties specified by the corresponding region style.

21. The apparatus of claim 20, wherein the controller is configured to control the pickup to reproduce the text subtitle stream, the text subtitle stream including the style segment which includes a data field indicating a number of the at least one set of user control style defined in the style segment for each of the at least one region style.

22. The apparatus of claim 21, wherein the controller is configured to control the pickup to reproduce the text subtitle stream, the text subtitle stream including the style segment which defines the at least one set of user control style, the number of the at least one set of user control style defined for each of the at least one region style is less than or equal to 25.