JP2004062931A - Recording device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To arbitrarily select a recording start position when information data are to be recorded on a random access medium such as a disk medium or the like and to easily control a recording or a reproducing start position for every user when a plurality of users is to conduct a recording and a reproducing on a single medium. <P>SOLUTION: In the recording device for recording new image data on a random access medium such as a disk medium on which image data are already recorded. An arbitrary recording start position is selected from among a plurality of prescribed positions related to image data that are already recorded on a recording medium, for example, a leading position, a recording start position of a previous take and a recording completion position and the new image data are recorded from the selected recording start position. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a recording apparatus, and more particularly to control of a recording or reproduction start position.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, apparatuses for reproducing sound and images from disk media such as CDs and DVDs are known. In this type of apparatus, when the reproduction is stopped in the middle of the information data recorded on the disk, the next time the reproduction is started, the reproduction is performed again from the first data. For this reason, for example, it is very inconvenient when a long-time content such as a movie is to be watched in several times.
[0003]
Therefore, there is a device that employs a so-called resume function in which the stop position on the disk at the time of stopping the reproduction is stored in the main body of the device, and the next reproduction is started from the stop position.
[0004]
[Problems to be solved by the invention]
However, in the related art, once the disk is ejected from the main body or the power supply of the main body is cut off, the position information is erased and the resume function is invalidated. Also, since only one stop position information is stored, in an environment where a single disc is viewed by a plurality of persons, the reproduction stop position cannot be managed for each user, and it is sometimes difficult to use.
[0005]
In recent years, an apparatus for recording image data on such a disk medium has also appeared, but in this type of apparatus, recording is usually performed immediately after data recorded immediately before, such as a VTR. The user cannot arbitrarily select the recording start position.
[0006]
An object of the present invention is to solve such a problem.
[0007]
Another object of the present invention is to make it possible to arbitrarily select a recording start position when recording information data on a random access medium such as a disk medium.
[0008]
Still another object of the present invention is to make it possible to easily manage the recording or reproduction start position for each user when a plurality of users perform recording and reproduction on one medium.
[0009]
[Means for Solving the Problems]
To achieve the above object, according to the present invention, there is provided an apparatus for newly recording information data on a recording medium on which information data has already been recorded, and a recording apparatus for recording information data on the recording medium. Means, selecting means for selecting an arbitrary recording start position from a plurality of predetermined positions related to the information data recorded on the recording medium, and the new information data from the recording start position selected by the selecting means. And a control unit for controlling the recording unit so as to record the recording device.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described.
[0011]
FIG. 1 is a diagram showing a configuration of a video camera 100 to which the present invention is applied. The video camera 100 records and reproduces image data on an optical disc D such as a DVD.
[0012]
In FIG. 1, 101 is an imaging unit, 102 is a memory, 103 is a display control unit that controls the display operation of a display 104, and 104 is a display including a liquid crystal monitor and the like. Reference numeral 105 denotes a system control unit for controlling the operation of the video camera 100; 106, operation keys including various keys and a mode dial for switching an operation mode of the video camera 100; 107, image data encoding according to a well-known MPEG method; A CODEC 108 for decoding, a disk I / F 108 for recording and reproducing the image data and other data encoded on the disk D, an output circuit 109 for outputting the image data to an external monitor, etc., and a reference numeral 110 for the image data A digital I / F 111 for inputting and outputting in a coded state is a bus for transmitting and receiving data in each unit of the video camera 100.
[0013]
First, a basic operation at the time of recording in such a video camera 100 will be described.
[0014]
When the power is turned on by setting the camera mode by the mode dial of the operation key 106, the system control unit 105 sends the image data obtained by the imaging unit 101 to the display control unit 103, and displays the image data on the display 104. Display the image from. In this state, when a recording start instruction is issued from the operation key 106, the system control unit 105 controls the memory 102, the CODEC 107, and the disk I / F 108 to start recording.
[0015]
That is, the image data output from the imaging unit 101 is stored in the memory 102, and the CODEC 107 encodes the image data stored in the memory 102 according to the MPEG method. The encoded image data is output to the disk I / F 108, and the disk I / F 108 records the image data on the disk D. At this time, the CODEC 107 generates thumbnail image data obtained by reducing the image of the first frame at the start of recording and writes the thumbnail image data in the memory 102. When an instruction to stop recording is given from the operation key 106, the system control unit 105 controls the disk I / F 108 to stop the operation of recording image data on the disk D.
[0016]
In this embodiment, a series of encoded image data recorded on the disk D and additional information such as a header and a footer related to the image data recorded from the recording start instruction to the recording stop instruction as one file are recorded on the disk D as one file. Record on D. The thumbnail image data described above is stored in the footer.
[0017]
Next, a description will be given of the selection of a recording start position and the accompanying recording operation in the present embodiment. In this embodiment, the user has arbitrarily selected a recording start position from a plurality of predetermined positions related to the information data recorded on the disk D, and recorded image data from the selected recording start position.
[0018]
FIG. 2 is a diagram in which the states of the image files recorded on the disk D are arranged in chronological order. Two files, files 205 and 206, are recorded on the disc D, and 206 is a file recorded later, that is, a file immediately before. Reference numeral 201 denotes a recording position of the first image data in time series, and reference numeral 202 denotes a reproduction stop position at which the reproduction is stopped when the disk D is reproduced in the reproduction mode as described later. Reference numeral 203 denotes a recording start position of the immediately preceding recording data, and reference numeral 204 denotes a recording stop position. In this embodiment, the four pieces of position information 201 to 204 are stored in the management information of the disk D, and the recording start position can be selected from these four positions.
[0019]
FIG. 2 shows the recorded data in chronological order, and does not always coincide with the actual recording position (address) on the disk D.
[0020]
Next, a process performed by the system control unit 105 for controlling the recording start position will be described. FIG. 3 is a flowchart showing the processing of the system control unit 105.
[0021]
In FIG. 3, when the camera mode is set by the mode dial, the disk I / F 108 is controlled, the management information is reproduced from the disk D, and written into the memory 102. Then, based on the contents of the management information, it is detected whether or not the disk D is a blank medium on which recording has never been performed (S301).
[0022]
Here, the management information will be described. The management information is information indicating a state of data recorded on the disk D, and includes, for example, information on a file name recorded on the disk D, a recording address of each file, a file length, a recording date and time, and the like. . The management information is recorded on a predetermined address of the disk D, for example, on a predetermined number of tracks on the innermost circumference side of the disk D.
[0023]
If it is determined in S301 that the medium is a blank medium, the head address (lowest address) in the recording area of the image data of the disk D is set as the recording start position (S306).
[0024]
Thereafter, a recording start key operation is waited for (S309), and when the operation is performed, recording is started (S310). At this time, thumbnail image data is generated from the first frame at the start of recording as described above (S311). Then, the address of the recording start position is stored in the management information stored in the memory 102 as the recording head position information 201 in FIG. 2 (S315).
[0025]
If it is determined in step S301 that the disk D is not a blank medium but a disk on which recording has been performed before, the management information stored in the memory 102 is checked, and the recording resume position (recording position) has already been confirmed. It is detected whether there is address information recorded as (start position) (S302).
[0026]
That is, in the present embodiment, information indicating each position (address) 201 to 204 shown in FIG. 2 is stored and recorded in the management information as recording resume position information in accordance with the recording and reproduction of data on the disk D. Therefore, the system control unit 105 detects whether the recording resume information is stored in the management information.
[0027]
If the recording resume information is detected, a resume point selection screen shown in FIG. 4 is displayed on the display 104 (S303).
[0028]
The resume points displayed here are the three addresses of the start position 201, the previous take recording start point 203, and the recording end point 204 in FIG. Also, at this time, the system control unit 105 controls the disk I / F 108 and the CODEC 107 so that the data recorded on the disk D has one of three positions of a head position 201, a previous take recording start point 203, and a recording end point 204. Each frame data is reproduced and written to the memory 102.
[0029]
The user can move the pointer 401 in FIG. 4 by operating the operation keys 106 to select a recording start position. At this time, with the movement of the pointer 401 in FIG. 4, the frame image of the resume point indicated by the pointer 401 is read from the memory 102 and displayed on the display 104.
[0030]
After the selection screen is displayed in this way, the process waits for the user's selection (S304), and when the selection is made, the resume point address is set as the recording start position (S307).
[0031]
If there is no address information in S302, the head address is searched for in the recordable data area other than the area where data is already recorded based on the management information (S305), and the recording start position is searched. Is set to the specified address (S308).
[0032]
Thereafter, a recording start key operation is waited for (S309), and when the operation is performed, recording is started (S310). At this time, thumbnail image data is generated from the first frame at the start of recording as described above (S311). Then, the address of the recording start position is stored in the management information as the recording start point information 203 of the latest take (S316).
[0033]
Thereafter, the recording operation is continued until the recording stop instruction is given by the operation key 106 (S317). Then, when there is a recording stop instruction, the recording of the image data is stopped (S318), and the address at the end of the recording is detected (S319).
[0034]
Further, at this time, thumbnail image data is generated from the image data of one frame at the recording end position, stored in the file footer of the disk D and recorded (S320), and the address at the end of recording is set as the take recording end point 204 as the management information. And recorded on the disk D by the disk I / F 108 (S321).
[0035]
Next, processing at the time of reproduction by the video camera 100 of FIG. 1 will be described. First, a basic reproduction operation will be described.
[0036]
The reproduction mode is set by the mode dial of the operation key 106, and when a reproduction instruction is given as described later, the system control unit 105 controls the CODEC 107 and the disk I / F 108 to reproduce the data recorded on the disk D.
[0037]
That is, the disk I / F 108 reproduces the image data of the file specified from the disk D and sends it to the CODEC 107. The CODEC 107 decodes the reproduced image data and sends it to the display control unit 103. The display control unit 103 displays the decoded image data on the display 104. When the reproduction stop is instructed by the operation key 106, the disk I / F 108 stops the reproduction of the image data from the disk D.
[0038]
Next, the processing of the system control unit 105 accompanying the reproduction operation will be described. FIG. 6 is a flowchart showing the processing of the system control unit 105 accompanying the reproduction operation.
[0039]
When the reproduction mode is set by operating the mode dial of the operation key 106, a reproduction instruction wait state is set (S601). When a reproduction key operation is performed, the control section controls the disk I / F 108 to reproduce the management information from the disk D and stores it in the memory 102. Then, it is detected whether or not the above-mentioned address information serving as a resume point is recorded in the management information (S602).
[0040]
If the address information is stored, the display control unit 103 is controlled to display the resume point selection screen shown in FIG. 7 on the display 104 (S603).
[0041]
The resume point displayed here is the two addresses of the head position 201 and the previous reproduction end point 202 in FIG.
[0042]
At this time, the system control unit 105 controls the disk I / F 108 and the CODEC 107, reproduces one frame of data at the start position 201 and the reproduction stop position 202 from the data recorded on the disk D, and writes the data to the memory 102.
[0043]
By operating the operation keys 106, the user can move the pointer 701 in FIG. 7 and select a reproduction start position. At this time, with the movement of the pointer 701 in FIG. 7, the frame image of the resume point pointed to by the pointer 701 is read from the memory 102 and displayed on the display 104.
[0044]
When the reproduction resume point is selected, the display control unit 103 is controlled to display the user authentication screen shown in FIG. 8 on the display 104, and request input of a user name and a password (S605).
[0045]
In this embodiment, the reproduction stop position information is managed for each user, and the user name, the password, and the reproduction stop position information of each user are stored in the management information and recorded on the disk D. When the user inputs a user name and a password on the display screen of FIG. 8, the system control unit 105 compares the user name and the password information stored in the management information. Then, when it is verified that the input user name and password are correct (S606), the reproduction is started from the position of the selected resume point (S607). At this time, if the previous playback end point has been selected, playback stop position information corresponding to the input user name is detected from the management information, and playback is started from the playback stop position corresponding to each user.
[0046]
If the address information has not been recorded in S602, reproduction of data is started from the head position (S608).
[0047]
Thereafter, the reproduction operation is continued until the operation of the stop key is detected (S609). When the operation of the stop key is detected, the disk I / F 108 is controlled to stop the reproduction operation (S610), and the address at the end of the reproduction is detected (S611). Then, thumbnail image data is generated from the image data of one frame at the reproduction stop position and recorded in the footer of the disk D (S612). The address information of the reproduction stop position is stored in the management information as the reproduction end point address 202, and the management information is recorded on the disk D by the disk I / F (S613).
[0048]
As described above, according to the present embodiment, when recording is started, the recording start position of the head position of the information data recorded on the disc, the recording start point of the file recorded immediately before, and the recording end point is determined. Since the selection can be made, the user can select an arbitrary position and start recording.
[0049]
Also, at the time of reproduction, since the reproduction stop position is stored in the disc for each user, even when a plurality of users reproduce one disc, it is possible to start reproduction from the reproduction stop position of each user. Become.
[0050]
When selecting the recording resume point, instead of multiplexing and displaying the images of the selected resume point as shown in FIG. 4, the thumbnail images of the respective resume points may be displayed simultaneously as shown in FIG. Good.
[0051]
Also, when the recording end point 204 shown in FIG. 2 is selected as the recording resume point, reproduction is started from an address that is a predetermined number of seconds before this position, and when the reproduction is completed up to the recording end point, the recording standby state is set. It is also possible to do.
[0052]
When a resume point is selected during reproduction and user authentication is performed, thumbnail images at the start position and the reproduction stop position can be displayed as shown in FIG.
[0053]
Further, the address of the reproduction stop position up to a predetermined number of times immediately before may be stored for each user, and the reproduction may be started by selecting an arbitrary position from the plurality of reproduction stop positions operated in the past for each user. Good.
[0054]
When all data recorded on one disk has been completely reproduced, the address of the reproduction end point is deleted, and only the head position is displayed at the next reproduction start.
[0055]
In this embodiment, the address of each resume point is stored in the disc management information and recorded at a predetermined position on the disc. However, the address of each resume point is provided in the video camera body in association with the disc. It is also possible to store it in a memory.
[0056]
In this embodiment, a magneto-optical disk is used as a recording medium. However, another random access medium such as a hard disk or a flash memory card can be used.
[0057]
【The invention's effect】
As described above, according to the present invention, a user can easily select an arbitrary position related to information data recorded on a recording medium and start recording.
[0058]
Further, it is possible to manage the reproduction start position for each user.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a video camera to which the present invention is applied.
FIG. 2 is a diagram showing a state of image data recorded on a disk.
FIG. 3 is a flowchart showing a process at the time of recording.
FIG. 4 is a diagram showing a screen for selecting a recording resume point.
FIG. 5 is a diagram showing a screen for selecting a recording resume point.
FIG. 6 is a flowchart showing a process at the time of reproduction.
FIG. 7 shows a screen for selecting a playback resume point.
FIG. 8 is a diagram showing a user authentication screen.
FIG. 9 is a diagram showing a screen for selecting a playback resume point.

Claims (25)

An apparatus for newly recording information data on a recording medium on which information data is already recorded,
Recording means for recording information data on the recording medium,
Selecting means for selecting an arbitrary recording start position from a plurality of predetermined positions related to the information data recorded on the recording medium,
A control unit that controls the recording unit to record the new information data from the recording start position selected by the selection unit. 2. The recording apparatus according to claim 1, wherein the control unit determines the recording start position using address information indicating an address on the recording medium corresponding to the plurality of predetermined positions. 3. The apparatus according to claim 2, wherein the control unit changes the content of the address information in accordance with a recording operation of the information data, and the recording unit further records the changed address information on the recording medium. Recording device. 4. The recording apparatus according to claim 3, wherein said recording means stores and records said address information in management information relating to said recording medium. The apparatus according to claim 1, further comprising a memory, wherein the control unit changes the content of the address information according to a recording operation of the information data, and writes the changed address information to the memory in association with the recording medium. 2. The recording device according to 2. 2. The recording apparatus according to claim 1, further comprising a display unit that displays information on the plurality of predetermined positions, wherein the selection unit selects the recording start position using information displayed on the display unit. . 7. The recording apparatus according to claim 6, wherein the information data is image data, and the display unit further displays an image corresponding to the selected position together with information on the plurality of predetermined positions. 7. The recording apparatus according to claim 6, wherein the information data is image data, and the display unit displays images corresponding to the plurality of predetermined positions together with information on the plurality of predetermined positions. The information data is image data, and further includes a thumbnail generating unit that generates thumbnail image data indicating an image corresponding to the plurality of predetermined positions, wherein the recording unit records the thumbnail image data on the recording medium, 9. The recording apparatus according to claim 8, wherein the display unit displays the thumbnail image data reproduced by the recording unit together with the information on the plurality of predetermined positions. 7. The recording apparatus according to claim 6, wherein the display unit displays information on the plurality of predetermined positions in response to power-on. The plurality of predetermined positions may include a start position of information data recorded first among information data recorded on the recording medium, a recording start position and a recording stop position of information data recorded immediately before. The recording device according to claim 1, wherein A reproducing unit that reproduces the information data from the recording medium, wherein when the recording stop position is selected, the control unit further reproduces the information data up to the recording stop position a predetermined period before the recording stop position. 12. The recording apparatus according to claim 11, wherein the reproducing unit and the recording unit are controlled so as to stop reproduction after recording and wait for recording. The recording apparatus according to claim 1, wherein the recording medium is a random access medium. The recording apparatus according to claim 1, wherein the recording medium is a disk-shaped recording medium. 2. The recording apparatus according to claim 1, wherein said information data is image data, and said image data includes image pickup means for generating said image data. Reproducing means for reproducing information data from a recording medium;
A playback unit that controls playback operation of the playback unit using stop position information indicating a playback stop position for each of a plurality of different users on the recording medium. 17. The apparatus according to claim 16, further comprising detection means for detecting a user, wherein said control means controls said reproduction means to start reproduction from said reproduction stop position corresponding to the user detected by said detection means. Playback device. 17. The reproducing apparatus according to claim 16, wherein the reproducing unit reproduces the stop position information from the recording medium. 19. The reproducing apparatus according to claim 18, wherein the control unit further changes the content of the stop position information according to a stop of the reproduction of the information data. 20. The reproducing apparatus according to claim 19, further comprising recording means for recording the changed reproduction position information on the recording medium. 20. The reproducing apparatus according to claim 19, wherein the control unit deletes the reproduction stop position when reproduction is stopped after reproducing the information data to the end. A selecting unit for selecting any one of a head position of the information data recorded on the recording medium and the reproduction stop position, wherein the control unit determines a reproduction start position according to a selection result of the selecting unit. 17. The playback device according to claim 16, wherein: Display means for displaying a screen for selecting the reproduction start position, wherein the selection means selects one of the head position of the information data and the reproduction stop position using the selection screen displayed on the display means 23. The reproducing apparatus according to claim 22, wherein the reproducing is performed. 24. The reproducing apparatus according to claim 23, wherein the information data includes image data, and the display unit further displays an image corresponding to the reproduction stop position together with the selection screen. The stop position information further includes information of a predetermined number of reproduction stop positions immediately before for each of the users, and the control unit performs the reproduction so as to start reproduction from a reproduction stop position selected from the predetermined number of reproduction stop positions. 17. The reproducing apparatus according to claim 16, wherein the reproducing device controls the means.

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