Recording medium and method and apparatus for reproducing and recording text subtitle streams

• US 20070122119A1
• Filed: 01/29/2007
• Published: 05/31/2007
• Est. Priority Date: 02/26/2004
• Status: Abandoned Application

• Current Assignee: Byung Kim, Jea Yoo, Kang Seo
• Original Assignee: Byung Kim, Jea Yoo, Kang Seo
• Inventors: Kim, Byung, Yoo, Jea, Seo, Kang
• Application Number:
  US11/699,032
• Publication Number:
  US 20070122119A1
• Time in Patent Office: Days
• US Class Current: 386/241
• CPC Class Codes: G11B 2220/2541 Blu-ray discs; Blue laser DVR discs
• CPC Class Codes: G11B 27/10 Indexing; Addressing; Timing or synchronising; Measuring tape travel
• CPC Class Codes: G11B 27/329 on a disc [VTOC]

Abstract

In one embodiment, a data structure recorded on the recording medium includes a text subtitle stream including one or more presentation segments. Each of the presentation segments specifies its own presentation start and end times. An initial value of a system time clock of the text subtitle stream is a presentation start time of the first presentation segment in the text subtitle stream.

Claims

1. A recording medium comprising:

a text subtitle stream including one or more presentation segments, each of the presentation segments specifying its own presentation start and end times, wherein an initial value of a system time clock of the text subtitle stream is a presentation start time of the first presentation segment in the text subtitle stream.

2. The recording medium of claim 1, wherein the presentation start and end times are defined on the system time clock.

3. The recording medium of claim 1, wherein each of the presentation segments contains at least one region of dialog text

4. The recording medium of claim 1, further comprising:

a clip information file corresponding to the text subtitle stream, the clip information file including a data field indicating a source packet number of a source packet where a STC-sequence starts, the STC-sequence representing a sequence of source packets where the system time clock is continuous.

5. The recording medium of claim 4, wherein the text subtitle stream includes only one STC-sequence.

6. The recording medium of claim 4, wherein the clip information file specifies presentation start and end times of the text subtitle stream,

wherein the presentation start time of the text subtitle stream points to the presentation start time of the first presentation segment in the text subtitle stream and the presentation end time of the text subtitle stream points to a presentation end time of the last presentation segment in the text subtitle stream.

7. A method of reproducing data recorded on a recording medium, the method comprising:

reading a text subtitle stream including one or more presentation segments from the recording medium, each of the presentation segments specifying its own presentation start and end times; and

setting an initial value of a system time clock of the text subtitle stream to a presentation start time of the first presentation segment in the text subtitle stream.

8. The method of claim 7, further comprising;

presenting at least one presentation segment in the text subtitle stream in accordance with its presentation start and end times referring to the system time clock.

9. The method of claim 7, wherein each of the presentation segments contains at least one region of dialog text and the at least one region of dialog text is presented in accordance with its presentation start and end times referring to the system time clock.

10. The method of claim 7, wherein the text subtitle stream includes only one STC-sequence, the STC-sequence representing a sequence of source packets where the system time clock is continuous.

11. The method of claim 7, wherein the text subtitle stream is presented between presentation start and end times of the text subtitle stream which are specified by a clip information file corresponding to the text subtitle stream,

wherein the presentation start time of the text subtitle stream points to the presentation start time of the first presentation segment in the text subtitle stream and the presentation end time of the text subtitle stream points to a presentation end time of the last presentation segment in the text subtitle stream.

12. An apparatus for reproducing data recorded on a recording medium, the apparatus comprising:

a controller controlling a text subtitle stream including one or more presentation segments to be read from the recording medium, each of the presentation segments specifying its own presentation start and end times, and the controller setting an initial value of the system time clock to a presentation start time of the first presentation segment in the text subtitle stream.

13. The apparatus of claim 12, wherein the controller controls at least one presentation segment in the text subtitle stream to be presented in accordance with its presentation start and end times referring to the system time clock.

14. The apparatus of claim 12, wherein the text subtitle stream includes only one STC-sequence, the STC-sequence representing a sequence of source packets where the system time clock is continuous.

15. The apparatus of claim 12, wherein the controller refers to only one system time clock in the text subtitle stream.

16. The apparatus of claim 12, wherein the controller controls the text subtitle stream to be presented between presentation start and end times of the text subtitle stream which are specified by a clip information file corresponding to the text subtitle stream,

wherein the presentation start time of the text subtitle stream points to the presentation start time of the first presentation segment in the text subtitle stream and the presentation end time of the text subtitle stream points to a presentation end time of the last presentation segment in the text subtitle stream.

17. The apparatus of claim 12, further comprising:

a reading unit reading data from the recording medium, wherein the controller controls the reading unit to read the text subtitle stream from the recording medium.

18. A method of creating a text subtitle stream, the method comprising:

creating the text subtitle stream including one or more presentation segments from the recording medium, each of the presentation segments specifying its own presentation start and end times which are defined on a system time clock of the text subtitle stream,

wherein an initial value of the system time clock is a presentation start time of the first presentation segment in the text subtitle stream.

19. The method of claim 18, wherein the text subtitle stream is created to include only one STC-sequence, the STC-sequence representing a sequence of source packets where the system time clock is continuous.

20. The method of claim 18, further comprising:

creating a clip information file corresponding to the text subtitle stream, the clip information file specifying presentation start and end times of the text subtitle stream,

wherein the presentation start time of the text subtitle stream points to the presentation start time of the first presentation segment in the text subtitle stream and the presentation end time of the text subtitle stream points to a presentation end time of the last presentation segment in the text subtitle stream.

21. An apparatus for creating a text subtitle stream, the apparatus comprising:

a controller creating the text subtitle stream including one or more presentation segments from the recording medium, each of the presentation segments specifying its own presentation start and end times which are defined on a system time clock of the text subtitle stream,

wherein an initial value of the system time clock is a presentation start time of the first presentation segment in the text subtitle stream.

22. The apparatus of claim 21, wherein the controller creates the text subtitle stream to include only one STC-sequence, the STC-sequence representing a sequence of source packets where the system time clock is continuous.

23. The apparatus of claim 21, wherein the controller further creates a clip information file corresponding to the text subtitle stream, the clip information file specifying presentation start and end times of the text subtitle stream, wherein the presentation start time of the text subtitle stream points to the presentation start time of the first presentation segment in the text subtitle stream and the presentation end time of the text subtitle stream points to a presentation end time of the last presentation segment in the text subtitle stream.

24. A method of recording data on a recording medium, the method comprising:

creating a text subtitle stream including one or more presentation segments from the recording medium, each of the presentation segments specifying its own presentation start and end times which are defined on a system time clock of the text subtitle stream; and

recording the text subtitle stream on the recording medium,

wherein an initial value of the system time clock is a presentation start time of the first presentation segment in the text subtitle stream.

25. The method of claim 24, wherein the text subtitle stream is created to include only one STC-sequence, the STC-sequence representing a sequence of source packets where the system time clock is continuous.

26. The method of claim 24, further comprising:

creating a clip information file corresponding to the text subtitle stream, the clip information file specifying presentation start and end times of the text subtitle stream, and recording the clip information file on the recording medium,

wherein the presentation start time of the text subtitle stream points to the presentation start time of the first presentation segment in the text subtitle stream and the presentation end time of the text subtitle stream points to a presentation end time of the last presentation segment in the text subtitle stream.

27. An apparatus for recording data on a recording medium, the apparatus comprising:

a controller creating a text subtitle stream including one or more presentation segments from the recording medium, each of the presentation segments specifying its own presentation start and end times which are defined on a system time clock of the text subtitle stream, and the controller controlling the text subtitle stream to be recorded on the recording medium,

wherein an initial value of the system time clock is a presentation start time of the first presentation segment in the text subtitle stream.

28. The apparatus of claim 27, wherein the controller creates the text subtitle stream to include only one STC-sequence, the STC-sequence representing a sequence of source packets where the system time clock is continuous.

29. The apparatus of claim 27, wherein the controller further creates a clip information file corresponding to the text subtitle stream, the clip information file specifying presentation start and end times of the text subtitle stream, and controls the clip information file to be recorded on the recording medium,

wherein the presentation start time of the text subtitle stream points to the presentation start time of the first presentation segment in the text subtitle stream and the presentation end time of the text subtitle stream points to a presentation end time of the last presentation segment in the text subtitle stream.

30. The apparatus of claim 27, further comprising:

recording unit recording data on the recording medium, wherein the controller controls the recording unit to record the text subtitle stream on the recording medium.