JP3972809B2 - Recording apparatus and recording method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a technique for recording information on a recording medium.
[0002]
[Prior art]
With the increase in capacity of recording media such as optical discs and magneto-optical discs and the advancement of high-efficiency encoding technology, development of technologies for recording and reproducing video and audio information by digitally compressing the amount of information has been active. Particularly in recent years, stationary recorders for recording video and audio information by broadcasting or line input onto a writable optical disk, a portable video camera, and the like have been developed. A writable DVD medium is used as the optical disc, and in particular, when importance is attached to reproduction compatibility with an existing DVD player, a DVD video format used for general cell video or the like is applied as a recording format of image / audio information. Is done.
[0003]
FIG. 2 shows a management structure of image / audio information in an optical disc on which information is recorded in the DVD video format. Information on the optical disc 201 is arranged and managed in the form of a video manager 202, a video title set 203, a video title set 204,.
[0004]
The video manager 202 includes video manager information 206, a video manager menu video object set 207, and a video manager information backup 208. The video manager information 206 is management information for the entire information recorded on the optical disc 201, and the video manager menu video object set 207 is information for displaying a menu of recorded information. The video manager information backup 208 is management information including the same contents as the video manager information 206, and is used as a backup when the video manager information 206 cannot be used.
[0005]
Furthermore, each video title set shown from the video title set 203 to the video title set 205 is composed of a video title set information 209, a video title set menu video object set 210, a video title set video object set 211, and a video title set information backup 212. The The video title set information 209 is information for managing the video title set, and the video title set menu video object set 210 is information for displaying a detailed menu of information recorded in the video title set. The video title set video object set 211 is the recorded video / audio information itself, and is stream information encoded in an appropriate format. The video title set information backup 212 is management information including the same contents as the video title set information 209, and is used as a backup when the video title set information 209 cannot be used.
[0006]
The information management structure based on the DVD video format described above is formed in a complete form after processing (hereinafter referred to as finalization) for making an optical disc playable by a playback device in a recording device such as a recorder or a video camera. It is what is done. In the state before finalization, the stream information corresponding to the video title set video object set 211 and intermediate management information (intermediate information necessary for generating other information during the process of converting the optical disk into a reproduction-only optical disk) Management information) is recorded on the optical disc 201.
[0007]
FIG. 3 shows an example of a management structure before finalization. The optical title 301 includes a video title set 302, a video title set 303, a video title set 304,..., A video title set 305, and the like from the start of recording to the end of recording (hereinafter referred to as a scene). A management structure that increases by the number of At this time, the video title set 302, the video title set 303, the video title set 304,..., The video title set 305 are associated with the title 306, the title 307, the title 308,.
[0008]
[Problems to be solved by the invention]
In the above prior art, one scene is associated with one video title set. However, in the video camera, when one video title set is associated with one scene, there is a problem that time is required to arrange the appearance as a video title set for each recording end. Further, there is a problem that the number of video title sets is limited (99 video title sets) on an optical disc. On the other hand, there is a problem that information recording attributes (resolution of image and sound information, etc.) must be fixed in one video title set.
[0009]
Therefore, an object of the present invention is to solve the above conventional problems. Another object of the present invention is to improve the usability of the recording apparatus in a technique for recording information on a recording medium by a recording apparatus.
[0010]
[Means for Solving the Problems]
In the present invention, the above problem can be solved by the following configuration, for example, but is not limited to this configuration.
The problem can be solved by, for example, a video camera that records information on a recording medium. For example, the video camera manages information from one recording start to recording stop with one chapter, manages the chapter with a title, manages the title with a video title set, and differs the information with different recording attributes. Management information that is managed by a video title set, management information generating means for generating video title set information when there is an operation instruction to generate management information and eject the recording medium, and the information and the management information to the recording medium Recording means for recording.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 and 4. In the present embodiment, a technique for recording image / audio information on an optical disk by a recording apparatus will be described. However, the present invention can be applied to a technique for recording information on a recording medium.
[0013]
FIG. 1 is a diagram showing a recording apparatus according to the present embodiment, and shows a recording apparatus for recording image / audio information. In FIG. 1, image / audio information is input via an image / audio information input circuit 101. The image / audio information processing circuit 102 encodes the input image / audio information by a predetermined encoding method to generate stream information. The recording / reproducing circuit 103 performs predetermined signal processing and drive control of the optical head 104, and stream information and intermediate management information are recorded on the optical disc 105 via the optical head 104. The control circuit 106 controls the image / audio information processing circuit 102, the recording / reproducing circuit 103, and the like based on an instruction input from the instruction input circuit 107, and performs generation processing of intermediate management information and video title set information. .
[0014]
In this embodiment, the management structure of the recorded audio / video information is as shown in FIG. That is, the image / audio information recorded in one scene is managed as one chapter. Also, all information recorded on the optical disc 401 is managed as one video title set 402. Further, the video title set 402 is subdivided into titles 403, 404,... 406, and one title is subdivided into chapters 407, chapters 408, chapters 409,.
[0015]
As described above, in the first embodiment, the time for creating a video title set at the end of recording can be omitted, and the recording end time can be shortened accordingly. Further, there is an effect that the scene can be recorded more times than the limit of the number of video title sets (maximum 99).
[0016]
Next, a second embodiment will be described with reference to FIGS. 1, 2, 5, and 6.
In the present embodiment, a recording technique when the resolution is changed on the same optical disk will be described. However, in the present embodiment, the change of resolution will be described, but the present invention is not limited to the change of resolution, and can be applied to a recording technique in the case of changing recording attributes. In the present embodiment, as in the first embodiment, image / audio information recorded in one scene is managed as one chapter.
[0017]
In the present embodiment, a process when there is a resolution setting instruction will be described in detail with reference to FIG. FIG. 5 shows the recording operation of the recording apparatus when there is a resolution setting instruction after the start of processing. Processing in step S501 is started, if there is a resolution of the setting instruction in step S502, the process proceeds to step S503. In step S503, it is determined whether or not the resolution of the image / audio information recorded last on the optical disc 105 is the same as the resolution instructed to be set .
[0018]
That is, when it is determined in step S503 that the resolution of the image / audio information recorded last on the optical disc 105 is the same as the resolution instructed to set (for example, in FIG. 6, the last recorded information is recorded on the optical disc 601). When the image / audio information is the image / audio information of the chapter 612 and the setting to the resolution B is designated), the control circuit 106 does not arrange the appearance of the information constituting the video title set in step S505. Set the resolution. On the other hand, when it is determined in step S503 that the resolution of the image / audio information recorded last on the optical disc 105 is not the same as the resolution instructed to set (for example, the last recorded image on the optical disc 601 in FIG. 6). In the case where the audio information is the image audio information of chapter 612 and the change to resolution A is instructed), in step S504, the control circuit 106 arranges the appearance of the information constituting the video title set of the optical disc 105, The process proceeds to step S505. In step S505, the control circuit 106 performs resolution setting processing. In step S506, the operation instruction wait state is entered, and the process ends.
[0019]
Note that, as a process for adjusting the appearance of the information constituting the video title set, the control circuit 106 includes the video title set information, the video title set menu video corresponding to the video title set for which the information constituting the video title set is to be adjusted. An object set and video title set information backup is generated and recorded on the optical disc 105 via the recording / reproducing circuit 103.
[0020]
When the recording of the image / audio information is instructed in the operation instruction waiting state as described above, the image / audio information is recorded for each resolution as shown in FIG. 6 by recording the image / audio information. It will be managed as a set. Accordingly, the image and audio information is managed with the same video title set when the resolution is the same, and is managed with a different video title set when the resolution is different. Further, as shown in FIG. 6, the resolution of the image / audio information in the video title set 602 is resolution A, but after the appearance of the information constituting the video title set 602 is adjusted, the image / audio information of the same resolution is also used. Audio / video information is managed by different video title sets 604.
[0021]
As described above, the present invention can be applied not only when the resolution change is instructed but also when the recording attribute change is instructed.
[0022]
As described above, in the second embodiment, it is possible to record more scenes than the limit of the number of video title sets (for example, 99). Further, when information is recorded without changing the recording attributes, it is possible to save time for creating a video title set at the end of recording, and to shorten the recording end time accordingly. Furthermore, information can be recorded on a recording medium by changing the recording attribute of the information.
[0023]
Next, a third embodiment will be described.
In the second embodiment, the processing for adjusting the appearance of the information constituting the video title set when the recording attribute change is instructed has been described. However, in this embodiment, the optical disc ejection or power shutdown is performed. In the case of an operation instruction such as the above, the format of the information constituting the video title set is arranged.
[0024]
By doing so, it is often instructed to change the recording attribute after the optical disc is ejected or the power is turned off, and in this case, the time required to arrange the format of the information constituting the video title set is reduced. This improves the usability of the recording apparatus.
[0025]
【The invention's effect】
As described above, the present invention can improve the usability of the recording apparatus in the technology for recording information on the recording medium by the recording apparatus.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of a recording apparatus. FIG. 2 is a diagram showing an information management structure on an optical disc. FIG. 3 is a diagram showing an information management structure on an optical disc. FIG. 5 is a diagram showing an operation flow of the recording apparatus according to the second embodiment. FIG. 6 is a diagram showing an operation flow of the recording apparatus according to the second embodiment. Diagram showing information management structure 【Explanation of symbols】
DESCRIPTION OF SYMBOLS 101 ... Video / audio information input circuit, 102 ... Video / audio information processing circuit, 103 ... Recording / reproduction circuit, 104 ... Optical head, 105 ... Optical disk, 106 ... Control circuit, 107 ... Instruction input circuit, 602 ... Video title set, 605 ... Title, 610 ... Chapter

Claims (2)

In a video camera that records information on a recording medium,
Information from one recording start to recording stop is managed with one chapter, chapters are managed with titles, titles are managed with video title sets, and the information with different recording attributes is managed with different video title sets, Management information generating means for generating management information and generating video title set information when there is an operation instruction to eject the recording medium ;
A video camera comprising recording means for recording the information and the management information on the recording medium. The video camera according to claim 1,
The recording medium is an optical disc;
The video camera characterized in that the number of pieces of information from the start of one recording to the stop of recording is equal to or greater than the maximum number of the video title sets on the optical disc.

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