Method of ensuring synchronous presentation of additional data with audio data recorded on a rewritable recording medium
A recording medium and a method and apparatus for managing data are provided. The method includes recording additional data in a data file separate from a file containing main data and recording navigation information that links the main data and the additional data. The additional data are segmented into a plurality of predetermined units, each of the predetermined units including time information indicating a presentation start time of the corresponding unit.
The present application is a divisional application of a copending parent application Ser. No. 10/305,020 filed on Nov. 27, 2002, the contents of which are entirely incorporated by reference.
BACKGROUND OF THE INVENTION1. Field of the Invention
The present invention relates to a method of recording additional data such as lyric and user input data to be in synchronization with audio data on a rewritable recording medium, and of reproducing them synchronously therefrom.
2. Description of the Related Art
A disk-type recording medium such as a Compact Disk (CD) can store high-quality digital audio data permanently, so that it is very popular recording medium in these days.
Recently, a Digital Versatile Disk (called ‘DVD’ hereinafter) has been developed as a new disk-type recording medium. A DVD can store much more data than a CD, that is, high-quality moving pictures or audio data are recorded on a DVD for much longer time. Therefore, a DVD will be used widely in the near future.
There are three types of DVDs—DVD-ROM for read-only, DVD-R for write-once, and DVD-RAM or DVD-RW for rewritable. For a rewritable DVD, the standardization of data writing format is in progress.
The disk device configured as
If an analog signal is applied to the disk device of
The writing processor 16 converts a series of the compressed data into binary signals which are written in mark/space patterns on the writable DVD 10. Already-compressed digital data from outside are directly processed by the writing processor 16 to be written onto the writable DVD 10.
After recording of audio data, navigation data for the audio data are created and then recorded on the writable DVD 10.
The TXTDT_MG can include additional data of recorded songs such as lyrics. Therefore, when the controller 14 selects and reproduces a recorded song from the rewritable disk 10, it is able to present lyric text in characters on a screen by reading it from the TXTDT_MG.
Consequently, when a user selects a recorded song to play back from the rewritable DVD 10, he or she is able to view its lyric on a screen.
However, each of additional data such as a lyric included in the TXTDT_MG is linked with a recorded song wholly. In other words, a lyric in the TXTDT_MG cannot have information to synchronize in detail with a recorded song. Therefore, it is impossible to display lyric data step by step at the same speed that the recorded song is reproduced from a rewritable DVD.
SUMMARY OF THE INVENTIONIt is an object of the present invention to provide a synchronizing method that records additional data such as lyric data and user input data to be synchronized minutely with audio data on a rewritable recording medium.
It is another object of the present invention to provide a synchronizing method that reproduces synchronously audio data and additional data thereof that have been recorded with minutely-synchronizing information.
An audio data related information recording method in accordance with the present invention segments additional information related with audio data recorded on a rewritable recording medium, records the information segments, and further records synchronizing information, e.g, time length to keep up presentation of each information segment or start time to present each information segment, in the vicinity of said each information segment in order to present each information segment in sychronization with a corresponding part of the recorded audio data.
An audio data related information reproducing method in accordance with the present invention reads sequentially a plurality of information segments constituting a piece of additional information related with audio data recorded on a rewritable recording medium, and makes presentation of each information segment based on synchronizing information, e.g, time length to keep up presentation of each information segment or start time to present each information segment, recorded in association with each information segment in order to present each information segment in sychronization with a corresponding part of the recorded audio data.
These and other objects of the present application will become more readily apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
BRIEF DESCRIPTION OF THE DRAWINGSThe accompanying drawings, which are included to provide a further understanding of the invention, illustrate the preferred embodiments of the invention, and together with the description, serve to explain the principles of the present invention.
In the drawings:
In order that the invention may be fully understood, a preferred embodiment thereof will now be described with reference to the accompanying drawings.
In an audio data recording method in accordance with an embodiment of the present invention, lyric or user data related with a song recorded on a rewritable disk such as DVD-RW is segmented into several units. Each segmented unit is linked with each corresponding part of the recorded song through segment synchronizing information for the purpose of minute synchronization of song and additional data.
As shown in
The output-time related information ‘Time #i’ is time-length, which a corresponding lyric segment is kept displayed for, or instant time when a corresponding lyric segment starts to be displayed. The lyric text may be displayed as subtitles. This time information is also used to differentiate a linked lyric segment from several lyric segments displayed altogether by different color or font for a specified duration.
Each lyric segment includes an ID code ‘IDCD’ as shown in
Each group of segmented units is linked with a recorded song through each ALUI search pointer in TXTDT_MG as shown in
To link a recorded song with an ALUI search pointer, a piece of CI (Cell Information) related with an AOB (Audio OBject), which corresponds to a single recorded song in general, is structured in the ORG_PGCI as shown in
Each CI includes an AOBI_SRPN (AOB Information SeaRch Pointer Number) for indexing information location of a related AOB (or song), an ASVUI_SRNP (ASVU (Audio Still Video Unit) Information SeaRch Pointer Number) for indexing information location of still video data linked with an AOB, and an ALUI search pointer number ‘ALUI_SRPN’ for indexing an ALUI search pointer in the TXTDT_MG that points a segment group containing a full lyric text related with an AOB.
Thus, if a song, namely, an AOB is chosen, the controller 14 reads the number written in ALUI_SPRN of CI associated with the selected AOB, and reads an address in ALUI search pointer indexed by the read number in the TXTDT_MG. The location of lyric text related with the selected song is found by this read address.
Then, lyric segments are retrieved sequentially from the addressed location by the reproduced signal processor 12. At this time, the controller 14 examines an ID code preceding each lyric segment. If the ID code is indicative of type of output-time related information, e.g., a time length for which the following lyric segment ‘SG_L_TXT #i’ is displayed, the controller 14 keeps outputting each lyric segment for a duration specified by the time length and changes current lyric segment with the next one after the time length expires. This operation continues until the end of AOB or stop request is received.
Referring to
If the ID code is indicative of not the type of output-time related information but the type of additional information, e.g., user data, the controller 14 processes the segmented additional information adequately for the designated type.
If the ID code indicates that there is no output-time related information in lyric segments, then the lyric segments are sequentially read out irrespective of time. This operation seems to correspond to a conventional lyric data displaying method.
The lyric segments related with a recorded song may be written in a file other than the RTR_AMG, instead of the TXTDT_MG.
The ALFI is composed of ALFI_GI (ALFI General Information) and a plurality of ALUI (Audio Lyric Unit Information) search pointers, each including ‘ALU_SA’ for a start address of a lyric unit, ‘ALU_SZ’ for size of a lyric unit, and ‘L_ATR’ for attribute of a lyric.
The ALU_SA in each ALUI search pointer points to the location of a corresponding ALU (Audio Lyric Unit) in a lyric file named by ‘AR_Lyric.ARO’ that is not included in the RTR_AMG. Each ALU in the lyric file ‘AR_Lyric.ARO’ includes a lyric text associated with a single recorded song, and the lyric text is divided into several segments ‘SG_L_TXT #i’. Each lyric segment also has output-time related information ‘Time’ and ID code ‘IDCD as described in the aforementioned embodiment.
According to this structure of the RTR_AMG, the ALUI_search pointer number contained in CI indexes an ALUI search pointer pointing to a lyric unit in the file ‘AR_Lyric.ARO’ associated with a recorded AOB, namely a song.
Thus, if a song, namely, an AOB is chosen, the controller 14 reads the number written in ALUI_SPRN of CI associated with the selected AOB, and reads an address in ALUI search pointer contained in the field ‘ALFI’ indexed by the read number. The location of a lyric unit related with the selected song is found in the file ‘AR_Lyric.ARO’ by this read address.
Then, lyric segments are retrieved sequentially from the first segment ‘SG_L_TXT #1’ at the addressed location in the file ‘AR_Lyric.ARO’ by the reproduced signal processor 12. At this time, the controller 14 examines an ID code preceding each lyric segment.
If the ID code is indicative of the type of output-time related information, the controller 14 conducts continuous and synchronous display of a series of lyric segments together with reproduced audio data belonging to the selected AOB. In this lyric synchronous display operation, a just-displayed lyric segment can be differentiated by color or font from neighboring lyric segments displayed altogether.
The above-explained lyric data synchronizing method ensures minutely-synchronous lyric presentation with audio data, e.g., song being reproduced in real time from a rewritable recording medium. Thus, a user is able to enjoy a reproduced song better through the lyric text displayed in synchronization with the song.
The detailed description of the invention has been directed to certain exemplary embodiments, various modifications of these embodiments, as well as alternative embodiments, will be suggested to those skilled in the art. The invention encompasses any modifications or alternative embodiments that fall within the scope of the claims.
Claims
1. A method of managing data recorded on a recording medium reproducible by a data reproducing apparatus, the method comprising:
- recording main data and additional data on the recording medium, the additional data being segmented into a plurality of predetermined units, each of the predetermined units including time information indicating a presentation start time of a corresponding unit and indication information indicating a type of the additional data; and
- recording navigation information on the recording medium that links the main data and the additional data.
2. The method of claim 1, wherein the additional data includes text data associated with the main data.
3. The method of claim 1, wherein the indication information indicates a type of the corresponding unit.
4. The method of claim 1, further comprising:
- recording attribute information on the recording medium associated with the additional data.
5. The method of claim 4, wherein the attribute information includes font information associated with the additional data.
6. The method of claim 1, wherein the recording medium is an optical disc.
7. The method of claim 1, further comprising:
- reproducing and presenting, from the recording medium, the main data along with the associated additional data.
8. The method of claim 7, wherein the additional data includes text data and the step of reproducing and presenting comprises reproducing the text data as a subtitle.
9. A recording medium on which data reproducible by a reproducing apparatus is recorded, the data recorded on the recording medium comprising:
- main data and additional data, the additional data being segmented into a plurality of predetermined units, each of the predetermined units including time information indicating a presentation start time of the corresponding unit and indication information indicating a type of the additional data; and
- navigation information that links the main data and the additional data.
10. The recording medium of claim 9, wherein the additional data includes text data associated with the main data.
11. The recording medium of claim 9, wherein the indication information indicates a type of the corresponding unit.
12. The recording medium of claim 9, further comprising attribute information associated with the additional data.
13. The recording medium of claim 12, wherein the attribute information includes font information associated with the additional data.
14. The recording medium of claim 9, wherein the recording medium is an optical disc.
15. An apparatus for managing data recorded on a recording medium, comprising:
- a recording part to record main data and additional data on the recording medium, the additional data being segmented into a plurality of predetermined units, each of the predetermined units including time information indicating a presentation start time of the corresponding unit and indication information indicating a type of the additional data; and to record navigation information that links the main data and the additional data.
16. The apparatus of claim 15, wherein the additional data includes text data associated with the main data.
17. The apparatus of claim 15, wherein the indication information indicates a type of the corresponding unit.
18. The apparatus of claim 15, wherein the recording part further records on the recording medium attribute information associated with the additional data.
19. The apparatus of claim 18, wherein the attribute information includes font information associated with the additional data.
20. The apparatus of claim 15, wherein the recording medium is an optical disc.
21. The apparatus of claim 15, further comprising:
- a reproducing part to reproduce and present, from the recording medium, the main data along with the associated additional data.
22. The apparatus of claim 21, wherein the additional data includes text data, and wherein the reproducing part reproduces the text data as a subtitle.
23. A method of reproducing data recorded on a recording medium recorded by a data recording apparatus, the method comprising:
- reading main data and additional data recorded on the recording medium, the additional data being segmented into a plurality of predetermined units, each of the predetermined units including time information indicating a presentation start time of the corresponding unit;
- reading navigation information recorded on the recording medium that links the main data and the additional data; and
- reproducing the main data along with the additional data based on the navigation information.
24. The method of claim 23, wherein the additional data includes text data associated with the main data.
25. The method of claim 23, wherein each of the predetermined units further includes type information indicating a type of the additional data.
26. The method of claim 23, further comprising:
- reading attribute information recorded on the recording medium associated with the additional data,
- wherein the step of reproducing reproduces the additional data based on the attribute information.
27. The method of claim 26, wherein the attribute information includes font information associated with the additional data.
28. The method of claim 23, wherein the recording medium is an optical disc.
29. The method of claim 23, wherein the additional data includes text data and the step of reproducing comprises reproducing the text data as a subtitle.
30. An apparatus for reproducing data recorded on a recording medium, comprising:
- a reading part to read main data additional data recorded on the recording medium, the additional data being segmented into a plurality of predetermined units, each of the predetermined units including time information indicating a presentation start time of a corresponding unit, and to read navigation information recorded on the recording medium that links the main data and the additional data; and
- an output part to output the main data and the additional data based on the navigation information.
31. The apparatus of claim 30, wherein the additional data includes text data associated with the main data.
32. The apparatus of claim 30, wherein each of the predetermined units further includes type information indicating a type of the additional data.
33. The apparatus of claim 30,
- wherein the reading part further reads attribute information recorded on the recording medium associated with the additional data, and
- wherein the output part outputs the additional data based on the attribute information.
34. The apparatus of claim 33, wherein the attribute information includes font information associated with the additional data.
35. The apparatus of claim 30, wherein the recording medium is an optical disc.
36. The apparatus of claim 30, wherein the additional data includes text data, and wherein the output part outputs the text data as a subtitle.
Type: Application
Filed: Apr 25, 2006
Publication Date: Nov 2, 2006
Inventors: Hyung Sun Kim (Seoul), Kang Seo (Kyunggi-do), Byung Kim (Kyunggi-do), Soung Um (Anyang-si)
Application Number: 11/409,990
International Classification: G06F 12/00 (20060101);