JP2002344874A - Recording and reproducing device, and control method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording/reproducing device which can improve operability and obtain sufficient convenience when a user reproduces a recorded program and to provide the control method. SOLUTION: When the user grasping the content of a previously recorded program newly records the program, the user can freely select whether the new program is to be recorded as the same program by adding to the previously recorded program by the operation of the user with respect to a UI part 101 or it is to independently be recorded as a program different from the previously recorded program.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a recording / reproducing apparatus for recording / reproducing various kinds of information such as images and audio information on / from a disc as an information recording medium and a control method thereof.

[0002]

2. Description of the Related Art Conventionally, as a recording medium for various information data, particularly video data obtained by receiving a television broadcast or photographing with a video camera (mainly a moving image), a tape-shaped magnetic recording medium is generally used. Certain tape media have been widely used.

When video data is recorded on the tape medium, the video data is continuously recorded on the tape medium. However, since the recording position of the data depends on the physical characteristics of the tape, management information on the data arrangement is provided. There is no need to prepare specially.

For example, to search for a program recorded on a tape medium, a VISS (VHS Index Search) recorded on a tape together with video data at the start of recording is used.
By referring to the (System) signal, it is possible to search for the start of the video data recording start point. Here, the "program" represents video data recorded from the start of recording to the stop of recording.

In order to search for a desired program from a tape medium as described above, it is necessary to physically fast-forward or rewind the tape. It is a disadvantage.

[0006] In the last ten or so years, optical disks such as CDs have been developed in place of the tape media as described above. One of the features of the optical disc is that the access speed to data is higher than that of the tape medium.

Furthermore, in recent years, several GB (gigabytes)
Phase-change optical discs (DVD-RAM) having a capacity of 3 Mbps have been developed, and MPEG2, a coding standard for digital AV data, has been put to practical use.
With MPEG2 and MPEG2, it has become possible to record and handle large-capacity data such as video data on a recording medium in the form of an optical disk having an excellent access speed.

To utilize this access performance, unlike a tape medium, new information for managing where data is recorded on a disk is required. Therefore,
The DVD-RAM video recording standard (DVD Specialistic) defines management information for recording video data on a DVD-RAM.
ons for Rewritable / Re-rec
and "able discs" (hereinafter referred to as DVR standards) have already been formulated and issued.

As described above, in order to make full use of the access speed of a disk medium such as an optical disk, it is necessary to classify and manage recorded programs.
In the recording / reproducing apparatus disclosed in Japanese Patent No. 7872, a recorded program is associated with a date and time at the time of recording.
It is configured so that it can be created by dividing at regular time intervals and automatically classifying by date or time.

[0010]

However, in the conventional recording / reproducing apparatus disclosed in Japanese Patent Laid-Open No. 2000-207872, recorded programs are classified by date / time as described above, In general, it is preferable to classify recorded programs according to their contents in order to enhance the convenience of playback and editing. However, this condition cannot be satisfied, and the user cannot play back the program. In addition, there is a problem that sufficient convenience cannot be obtained when performing editing.

The present invention solves the above-mentioned conventional problems. When a user plays back a recorded program, the operability at that time can be improved, and recording can be performed with sufficient convenience. A playback device and a control method thereof are provided.

[0012]

According to the present invention, there is provided a recording / reproducing apparatus for recording / reproducing various kinds of information such as images and audio information on / from an information recording medium by a user operation. In the apparatus, when the user records an arbitrary program, the program is provided with an additional recording means for adding the program to an already recorded program by the operation of the user and classifying and recording the same program as the same program. It is characterized by the following.

Further, a control method for a recording / reproducing apparatus according to the present invention is a control method for controlling recording / reproducing in a recording / reproducing apparatus, wherein a supplementary recording execution flag for determining whether or not to perform supplementary recording is enabled. Alternatively, the method includes a step of invalidating and a step of updating management information in order to execute additional recording.

As described above, when a user who has grasped the contents of a recorded program has newly recorded a program,
Depending on the user's operation, the new program can be added to the already recorded program and recorded as the same program,
It is possible to freely select whether to independently record as a different program from the already recorded program.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The recording / reproducing apparatus according to claim 1 of the present invention is a recording / reproducing apparatus for recording and reproducing various kinds of information such as images and audio information on an information recording medium by a user operation. When the user records an arbitrary program, the program is provided with an additional recording means for adding the program to an already recorded program by the operation of the user and classifying and recording the same program as the same program.

According to a second aspect of the present invention, there is provided the recording / reproducing apparatus according to the first aspect, wherein the recording / reproducing apparatus further includes means for allowing a user to select in advance whether or not to use the additional recording means when recording a program. Configuration.

According to a third aspect of the present invention, there is provided a recording / reproducing apparatus which, when reproducing a program obtained by supplementary recording by the supplementary recording means according to the first or second aspect, locates the beginning from the supplementary portion. It is configured to include means for instructing reproduction.

According to a fourth aspect of the present invention, there is provided a recording / reproducing apparatus, comprising: input means for converting an input analog signal into a digital signal; encoding means for encoding and compressing the digital signal converted by the input means; The compressed data is transferred to a DVD-R via a buffer.
DVD-RAM disk writing means for writing to an AM disk, and DVD-RAM data written to the DVD-RAM disk by the DVD-RAM disk writing means via a buffer.
DVD-RAM disk reading means for reading from a disk, decoding means for expanding the encoded and compressed data read from the DVD-RAM disk by the DVD-RAM disk reading means, and digital signal expanded by the decoding means for analog. Output means for converting the signal into a signal and outputting it to a television receiver or the like; management information file creation means for creating a management information file for managing video data recorded on the DVD-RAM disc; and management information file creation means Management information file recording means for recording the management information file created by the above on the DVD-RAM disc, and when the user records an arbitrary program, the program is added to the already recorded program by the user's operation. , Classified as the same program Afterthought and recording means, in order to realize the recording afterthought by the afterthought recording means, a configuration in which a management information file operation means for operating the data of the management information file.

According to a fifth aspect of the present invention, there is provided the recording / reproducing apparatus according to the fourth aspect, wherein the recording / reproducing apparatus is provided with means for allowing a user to select in advance whether or not to use the additional recording means when recording a program. Configuration.

According to a sixth aspect of the present invention, there is provided a recording / reproducing apparatus which, when reproducing a program obtained by adding and recording by the additional recording means according to the fourth or fifth aspect, cues from the added portion. It is configured to include means for instructing reproduction.

According to a seventh aspect of the present invention, there is provided a recording / reproducing apparatus control method for controlling recording / reproduction in the recording / reproducing apparatus according to any one of the first to sixth aspects, wherein the additional recording is performed. The method has a step of enabling or disabling a supplementary recording execution flag for determining whether or not to perform the supplementary recording, and a step of updating the management information to perform the supplementary recording.

According to these configurations and methods, when a user who has already grasped the contents of a previously recorded program records a new program, the new program can be added to the already recorded program by the user's operation. It is possible to freely select whether to add and record as the same program or to record as a separate program from a program already recorded.

Hereinafter, a recording / reproducing apparatus and a control method thereof according to an embodiment of the present invention will be specifically described with reference to the drawings, taking a video camera system using a DVD-RAM as a recording medium as an example.

FIG. 1 is a block diagram showing a system configuration of a DVD-RAM video camera which is a recording / reproducing apparatus of the present embodiment. In FIG. 1, reference numeral 101 denotes a user interface (hereinafter, referred to as a UI) unit for receiving a request from a user for recording start, supplementary recording start, recording stop, reproduction start, reproduction stop, disc ejection, and the like. A system control unit for controlling the camera; 103, a CCD camera serving as a video / audio input unit for inputting an image and a sound when capturing an image; 104, a CCD driving unit for driving the CCD camera 103;
An A / D converter for converting an analog signal from the D camera 103 into a digital signal, a moving image compression method called MPEG2, Dolby AC-3 or LP
An encoder unit 107 for compressing video stream information using an audio compression method called CM, etc.
A drive unit for reading and writing data from and to the RAM 108, and a DVD-rewritable optical disc 108
RAM, 109 is a memory controller, 110 is a buffer memory, 111 is an output unit that outputs video / audio and control information, 112 is a D / A converter that converts digital signals into analog signals, and 113 is a decoder that expands video stream information Department.

The memory controller 109 stores the video stream information (recording information) output from the encoder unit 106 in the buffer memory 110, or takes out the video stream information (reproduction information) from the buffer memory 110 and outputs it to the decoder unit 113. I do.

Next, an outline of the structure of data recorded on the DVD-RAM 108 will be described. FIG. 2 shows the DV
The data recorded in the D-RAM 108 shows a physical configuration managed by a physical sector address and a logical configuration managed by a file system. Here, the file system is a method for managing data in a disk as directories and files.

In FIG. 2, reference numeral 201 denotes a DVD-RAM 1
08 is a lead-in area in which a reference signal necessary for stabilizing servo control for 08 and an identification signal for distinguishing the medium from other media are recorded. 202 is a volume area in which management information for a file system is recorded. , 2
Reference numeral 03 denotes a lead-out area in which the same reference signal as the lead-in area 201 is recorded.

The lead-in area 201 is recorded at the head (inner side) of the physical sector address,
3 is recorded at the end (outer peripheral side) of the physical sector address. The description of the file system is omitted because it does not directly relate to the content of the present invention. Lead-in area 20
Between 1 and the lead-out area 203, there is a data area, in which logically valid data is recorded. At the head of the data area is a volume area 202, in which management information for the file system is recorded.

The logical configuration of the data area visible through the file system will be described. In FIG.
Is a Root directory, 205 is a DVD_RTAV directory, and 206 is a management information file VR_M
ANGR. IFO file, 207 is a VR_STILL. VRO file 208 is a moving image file VR_MOVIE. Indicates a VRO file.

All data handled by the DVD-RAM is stored in the DVD_RTA directly under the Root directory 204.
It is located under the V directory 205. DVD-RAM
Are classified into two types. One management information file 206 and a plurality of (at least one) AV (Audio / Video) files 207, 208, and the like. AV files are movies,
The files are classified into three files: a still image and a sound recorded on the still image. As information for managing these three AV files, a management information file 206
Is placed.

In FIG. 2, the management information file is VR_
MANGR. IFO file 206, and the still image file is VR_STILL. The VRO file 207 and the moving image file are VR_MOVIE. VRO file 208
Is equivalent to

VR_MANG which is a management information file
R. The IFO file 206 is defined by the DVR standard, and its structure will be described below. The DVR standard defines a program (hereinafter, referred to as PG) that is automatically created at the time of recording and a program (hereinafter, referred to as PL) that is created by the user connecting only desired scenes later.
In addition, the DVR standard allows moving image files and still image files to be recorded in a single disk, but here, the description will focus on management information related to moving image programs. Note that parts related to still images that are not directly related to the present invention are omitted.

FIG. 3 shows a management information file VR_M.
ANGR. The structure of the IFO file 206, the ORG_PGCI 312 which is the management information of the PG, and the M_VOBI 30 which is the management information of the actual moving image stream file
3 shows a reference relationship. In FIG.
Is M_A indicating management information of a video program stream.
VFIT, 302 is M indicating VOB stream attribute information
_VOB_STI, 303 is M_VO indicating VOB information
BI 304 is M_VOBI recorded as a whole
M_VOBI_SRP_Ns indicating the number, 305 is each M_VOBI_SRP_Ns
M_VOBI_SA indicating the reference pointer of VOBI, 3
06 is VOB_TY indicating the type of VOB, 307 is VO
VOB_REC_T indicating the time at which the beginning of B was recorded
M and 308 are M_VOB_STIN indicating a reference pointer to M_VOB_STI, 309 is VOB_V_S_PTM indicating a VOB playback start time, 310 is VOB_V_E_PTM indicating a VOB playback end time, and 311 is V
TM indicating the time map information of the VOBU constituting the OB
API, 312 is ORG_PGCI indicating PG information, 3
13 is PGI indicating PG management information, and 314 is CELL
315 indicates C_Ns indicating the number of cells included in the PGI 313, and 316 indicates M_VOBI_SR indicating a reference pointer of a VOB referred to by each cell.
PN, 317 indicates C_EPI_Ns indicating the number of entry points included in the CELL, 318 indicates C_V_S_PTM indicating the playback start time of the CELL, 319 indicates C_V_E_PTM indicating the playback end time of the CELL, 320 indicates C_EPI indicating entry point information, and 321 indicates PL information. UD_PGCIT.

Here, the entry point is information used to skip a certain recorded portion during reproduction. The user can add an entry point to an arbitrary position in the cell, and by specifying an entry point during reproduction, reproduction from that position can be started.

The management information file 206 has seven tables (RTR_VMGI, M_AVFIT 301,
S_AVFIT, ORG_PGCI312, UD_PG
CIT 321, TXTDT_MG, MNFIT).

In the management information file, those related to moving images are roughly divided into M_VOB_STI 302,
M_VOBI303, ORG_PGCI312, UD_
PGCIT321. Here, VOB (Video
Object) is a program stream according to the MPEG system.

PG and PL define the playback order of CELL using an arbitrary partial section (or all sections) in the VOB as one logical playback unit. In other words, VOB is one unit having a meaning as MPEG, and PG and PL are one unit in which the player device reproduces. Each VOB is M_VOB_ST
I302, and the stream attribute of the VOB is determined by the referenced M_VOB_STI 302.
VOBs having the same attribute are the same M_VOB_STI30
See FIG.

The M_AVFIT 301 which is a management information table of a moving picture program stream will be described.
This is roughly divided into two areas. One is an area in which the M_VOB_STIs 302 described above are arranged. The other is M_VOBI 303 in which address information of an actual stream and a time map for special reproduction are recorded.
Is an area where. Note that M_VOB_STI 302
Is not related to the present invention, and the description is omitted.

In the area where M_VOBI 303 is arranged,
_VOBI_SRP_Ns304, M_VOBI_SA
305, and each of the M_VOBIs 303 has a V
OB_TY306, VOB_REC_TM307, M_
VOB_STIN308, VOB_V_S_PTM30
9, VOB_V_E_PTM310, TMAPI311
It is composed of such elements.

Next, ORG_PGCI3 for managing the PG
12 will be described. ORG_PGCI312 is PGI3
13 and an area in which CI 314, which is management information of CELL as a reproduction logical unit, is arranged.

Each PGI 313 is composed of C_Ns 315 and the like. Each CI 314, as shown in FIG.
_VOBI_SRPN 316, which determines the VOB to be reproduced when CELL is selected. CI 314 includes C_V_S_PTM 318, C_V_E_PTM3 in addition to M_VOB_SRPN 316.
19, C_EPI_Ns317, C_EPI320, and the like.

As indicated by the arrow in FIG.
4 refers to the M_VOBI 303. CI314
Is information indicating a logical reproduction section for reproducing the VOB indicated by M_VOBI 303. This means that the CI 314 cannot exceed the range of the VOB indicated by M_VOBI 303. (Basic operation of the present apparatus) The basic operation of the present apparatus will be described.

First, the recording operation will be described. UI part 1
When a recording operation of a program is instructed from 01, the system control unit 102 starts a recording operation of video stream information. Information input from the CCD camera 103 controlled by the CCD driving unit 104 is transmitted to an A / D converter 105.
Is converted from an analog signal to a digital signal.

The encoder 106 compresses the digital information sent from the A / D converter 105 and outputs it to the memory controller 109. The memory controller 109 temporarily stores the compressed video stream information and the like from the encoder unit 106 in the buffer memory 110, reads out the buffered video data from the buffer memory 110, and outputs it to the drive unit 107. DV by drive unit 107
Writing to the D-RAM 108 is performed.

D controlled by the system control unit 102
At a designated position in the VD-RAM 108, compressed video stream information and the like are recorded. In the DVR standard, video stream information is VR_MOVIE. Recorded as a VRO file 208. When an instruction to stop recording is issued from the UI unit 101, the system control unit 102 stops the recording operation of the video stream information.

Next, the reproducing operation will be described. UI part 1
01, when a reproduction operation is instructed, the system control unit 10
2 starts the reproduction operation. By the drive unit 107, D
Digital information (compressed video stream information and management information) is read from the VD-RAM 108. The information is temporarily stored in the buffer memory 110 by the memory controller 109.

The memory controller 109 reads information from the buffer memory 110 and outputs the information to the decoder unit 113. The compressed video stream information and the like are expanded to the original information by the
The digital signal is converted into an analog signal by the D / A conversion processing of the A converter 112, and the reproduction information is displayed from the output unit 111 to a television receiver or the like connected to the output unit 111. (Operation of the present embodiment) DVD configured as above
The operation of the RAM video camera system will be described below with reference to the flowchart of FIG.

It is assumed that the DVD-RAM video camera system has a state management flag (hereinafter referred to as a supplementary recording execution flag) for determining whether supplementary recording is being performed. It is also assumed that the program A has already been recorded on the DVD-RAM disk 108 and has been mounted on the system (YES in step 401).

When the user wishes to perform additional recording on program A, the UI unit 101 instructs the start of additional recording (steps 402 and 403). UI at this time
The method of giving an instruction to the unit 101 may be, for example, operating the UI unit 101 twice continuously to issue a recording start instruction, operating a new instruction dedicated to additional recording on the UI unit 101, or If one or more programs have already been recorded due to the initial setting or the like, there are several possibilities, such as adding all subsequent recording starts and performing recording.

When the additional recording operation is instructed, the system control unit 102 starts the recording operation of the program (hereinafter, referred to as program B). At this time, the additional recording execution flag is set to TRUE (step 404).

When a stop of recording is instructed from the UI unit 101 (YES in step 406), an additional recording execution flag is confirmed (step 407). If the additional recording execution flag is TRUE (TRU in step 407)
E), the number of cells of program A, C_Ns, and the number of cells of program B
Add the number C_Ns. The PGI of program B is not newly recorded (step 408). Then, the supplementary recording execution flag is set to FALSE (step 409), and the recording operation is stopped (step 410).

By the above operation, the number of VOBs and CELLs of the program B is increased.
It will be recorded as OB and CELL. That is, the program B is recorded in addition to the program A.

An entry point can be given to the first cell of the program B. In this case, the reproduction from the added program B is started (steps 411 to 41).
Since 3) can be performed, operability in reproduction (steps 414 to 416) and editing by the user can be further improved.

[0054]

As described above, according to the present invention, when a user who has already grasped the contents of a previously recorded program records a new program, the user can operate the new program by operating the user. It is possible to freely select whether to add the recorded program and record it as the same program, or to record it independently as a program different from the already recorded program.

Therefore, when a plurality of programs are successively recorded, the newly recorded program can be recorded as the same program according to the user's selection intention and in the manner intended, and the user can reproduce the program. In this case, operability can be improved.

In particular, in a video camera system, it is assumed that recording for a short time is repeated by the user, and in that case, the number of programs inevitably increases, and it becomes complicated when the user performs reproduction and editing. However, if the recording is performed additionally, the user can classify and manage the programs according to the content, so that such complexity can be eliminated.

Further, when a program is added, by providing an entry point at the start point of the program, reproduction from the start point of the added program becomes easy,
Operability in reproduction and editing by the user can be improved.

[Brief description of the drawings]

FIG. 1 shows a DV which is a recording / reproducing apparatus according to an embodiment of the present invention.
FIG. 1 is a block diagram showing a system configuration of a D-RAM video camera.

FIG. 2 is a diagram illustrating a configuration of data recording on a DVD-RAM according to the embodiment;

FIG. 3 shows management information (VR_MAN) in the embodiment.
GR. (IFO) file configuration explanatory diagram

FIG. 4 is a flowchart showing an operation in the embodiment.

[Explanation of symbols]

 Reference Signs List 101 User interface (UI) unit 102 System control unit 103 CCD camera (video / audio input unit) 104 CCD drive unit 105 A / D converter 106 Encoder unit 107 Drive unit 108 DVD-RAM 109 Memory controller 110 Buffer memory 111 Output unit 112 D / A converter 113 Decoder section 201 Lead-in area 202 Volume area 203 Lead-out area 204 Root directory 205 DVD_RTAV directory 206 VR_MANGR. IFO file 207 VR_STILL. VRO file 208 VR_MOVIE. VRO file 301 M_AVFIT 302 M_VOB_STI 303 M_VOBI 304 M_VOBI_SRP_Ns 305 M_VOBI_SA 306 VOB_TY 307 VOB_REC_TM 308 M_VOB_STIN 309 VOB_V_S_PTM 310 VOB_V_E_PTM 311 TMAPI 312 ORG_PGCI 313 PGI 314 CI 315 C_Ns 316 M_VOBI_SRPN 317 C_EPI_Ns 318 C_V_S_PTM 319 C_V_E_PTM 320 C_EPI 321 UD_PGCIT 401 disk mounting determining step 402 Recording operation execution determination step 403 Additional recording start determination step 404 Additional recording execution flag setting step 405 Recording operation execution step 4 6 Recording Stop Judgment Step 407 Supplementary Recording Execution Flag Judgment Step 408 Management Information File Update Processing Execution Step 409 Supplementary Recording Execution Flag Setting Step 410 Recording Stop Execution Step 411 Disk Ejection Determination Step 412 Disk Ejection Execution Step 413 Playback Operation Determination Step 414 Playback Operation Execution step 415 Reproduction stop determination step 416 Reproduction stop execution step

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) H04N 5/92 H04N 5/91 LF term (reference) 5C052 AA02 AC08 DD10 5C053 FA14 FA25 FA30 GA11 GB05 GB06 GB38 JA21 KA01 KA24 KA25 LA01 LA06 5D044 AB07 BC04 CC06 DE29 DE49 DE54 EF03 EF05 FG10 FG18 GK12 5D110 AA17 AA29 DA06 DB03 DC05 DC16 DE01 EA07

Claims (7)

[Claims] 1. A recording / reproducing apparatus for recording / reproducing various information such as images and audio information on / from an information recording medium by an operation of a user, wherein when the user records an arbitrary program, the program is reproduced by the user. Recording / reproducing apparatus provided with an additional recording means for adding an already-recorded program by the operation of (1) and classifying and recording the same program as the same program. 2. The recording / reproducing apparatus according to claim 1, further comprising means for allowing a user to select in advance whether or not to use an additional recording means when recording a program. 3. The apparatus according to claim 1, further comprising means for instructing a cue reproduction from the added part when reproducing the program obtained by the additional recording by the additional recording means. Item 3. The recording / reproducing apparatus according to Item 2. 4. An input unit for converting an input analog signal into a digital signal, an encoding unit for encoding and compressing the digital signal converted by the input unit, and a buffer for encoding and compressing the data by the encoding unit. D written to DVD-RAM disk via
VD-RAM disk writing means, and the DVD-R
DVD-R for reading encoded and compressed data recorded on a DVD-RAM disk by an AM disk writing means from the DVD-RAM disk via a buffer
AM disk reading means, decoding means for expanding the encoded and compressed data read from the DVD-RAM disk by the DVD-RAM disk reading means, and converting the digital signal expanded by the decoding means into an analog signal. Output means for outputting to a television receiver, etc., management information file creation means for creating a management information file for managing video data recorded on the DVD-RAM disc, and management created by the management information file creation means Copy the information file to D
Management information file recording means for recording on a VD-RAM disk, and when the user records an arbitrary program, the program is added to the already recorded program by the operation of the user, and classified and recorded as the same program A recording / reproducing apparatus, comprising: a supplementary recording means to be added; and a management information file operation means for operating data of the management information file in order to implement supplementary recording by the supplementary recording means. 5. The recording / reproducing apparatus according to claim 4, further comprising means for allowing a user to select in advance whether or not to use an additional recording means when recording a program. 6. The apparatus according to claim 4, further comprising means for instructing a cue reproduction from the added part when reproducing the program obtained by the additional recording by the additional recording means. Item 6. The recording / reproducing device according to Item 5. 7. A control method for controlling recording / reproduction in the recording / reproduction device according to claim 1, wherein an additional recording execution flag for determining whether or not to execute additional recording. A control method for enabling or disabling the control, and a step of updating the management information in order to execute additional recording.