JP3097988U - Information recording device - Google Patents

Abstract

An object of the present invention is to eliminate a situation in which recording or reproduction cannot be performed for a long time or to degrade image quality by eliminating re-encoding, and to enable quick dubbing without requiring format conversion processing during dubbing.
A recording area of a hard disk 11 is divided in advance into a plurality of divided areas A, B, C,... N in units of 4.7 GB, which is the maximum recording capacity of optical discs 21a to 21c. , C,... N are recorded so as not to exceed the range of 4.7 GB. The application format for recording information on the hard disk 11 and the optical disks 21a to 21c is the same. .. N becomes equivalent to one optical disc, and dubbing is performed by simply moving or copying the information of each divided area onto the optical discs 21a to 21c and recording the information. be able to.
[Selection] Fig. 2

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to an information recording device such as a DVD recorder with a built-in hard disk.
[0002]
[Prior art]
When recording a TV program or the like using a DVD recorder with a built-in hard disk, the capacity of the hard disk is limited. It is common to dub onto recordable DVDs such as DVD-RAM and DVD-RW. Regarding the prior art for dubbing from a hard disk to an optical disk, there is, for example, the following Patent Document 1.
[0003]
[Patent Document 1]
JP-A-2002-245717
[Problems to be solved by the invention]
By the way, the maximum recording capacity of the recordable DVD described above is 4.7 GB, and when writing information from a hard disk to these optical disks, there is no problem if the information capacity is 4.7 GB or less, but if the information capacity exceeds 4.7 GB. Requires data compression, and re-encoding is performed during dubbing. However, this re-encoding takes as much time as the playback time of the content to be dubbed, and since re-encoding cannot be performed in the background, recording and playback cannot continue for several hours. However, it was extremely inconvenient for the user. Further, there is a problem that image quality is deteriorated by re-encoding.
[0005]
In order to avoid such re-encoding, the number of titles to be dubbed should be reduced and divided into two or more media, or an editing operation should be performed. Has the disadvantage that extra media is required and the number of dubbing increases. In the latter case, the number of media does not increase, but there is a problem that the editing work becomes very complicated.
[0006]
In a conventional DVD recorder with a built-in hard disk, as shown in FIG. 8, an application format for recording information on a hard disk 51 and a format used for recording information on an optical disk (recordable DVD) 52 are used. The application format is different. That is, while the application format of the optical disk 52 is the DVD-Video format, the application format of the hard disk 51 is a unique format customized for the hard disk. Therefore, when dubbing from the hard disk 51 to the optical disk 52, a format conversion process is required.
[0007]
On the other hand, Patent Document 1 describes that when information is recorded on a hard disk, the information is divided and recorded as a plurality of files so that the information can be recorded on an optical disk. FIG. 9 schematically illustrates this. When recording, information is automatically divided and recorded in a plurality of files A, B, and C on the hard disk 61. Here, since the maximum capacity of each of the files A, B, and C is set to 4.7 GB which is the maximum capacity of the recordable DVD 62, when these files are recorded on the optical disc 62, the capacity must exceed 4.7 GB. Will not occur. However, as described above, since the application format of the hard disk 61 and the application format of the optical disk 62 are different from each other in the related art, the format conversion process at the time of dubbing is unavoidable even in the case of this document. There is a problem that only the processing is slow.
[0008]
The present invention is intended to solve the above-described problems. The purpose of the present invention is to eliminate a situation in which recording and playback cannot be performed for a long time and to reduce the deterioration of image quality by eliminating re-encoding. Another object of the present invention is to provide an information recording apparatus capable of performing quick dubbing without requiring format conversion processing.
[0009]
[Means for Solving the Problems]
The present invention includes a first drive that records information on a first medium, and a second drive that records information on a second medium having a smaller recording capacity than the first medium, In an information recording apparatus capable of recording information of a first medium on a second medium, a recording area of the first medium is divided into a plurality of divided areas in units of a maximum recording capacity of the second medium. Have been. The application format for recording information on the first medium is the same as the application format used when recording information on the second medium. Then, when the first drive records information on the first medium, each of the plurality of divided areas is set so as not to exceed the range of the maximum recording capacity of the second medium which is the capacity of the area. Record information. Further, when dubbing from the first medium to the second medium, the second drive moves or records the information recorded in one divided area of the first medium to one second medium as it is. Copy and record.
[0010]
By doing so, the information recorded in the divided area of the first medium is within the range of the maximum recording capacity of the second medium, and therefore, when dubbing from the first medium to the second medium, In addition, re-encoding due to overcapacity does not occur at all. As a result, the problem that recording and reproduction cannot be performed for a long time and the problem that image quality deteriorates are solved. In addition, since the first medium and the second medium have the same application format, a plurality of divided areas in the first medium can be treated as equivalent to the second medium. Therefore, in dubbing, it is only necessary to move or copy the information of the first medium to the second medium as it is, and the format conversion process is not required.
[0011]
Further, in the present invention, when dubbing from the first medium to the second medium, the divided area of the first medium in which the information to be dubbed is recorded is designated based on the designation of the divided area. Is recorded on the second medium. According to this, even when a plurality of titles are recorded in the divided area, it is unnecessary to perform a dubbing operation by designating a recording mode after designating a dubbing list by specifying a title one by one. Thus, dubbing can be performed by a simple operation regardless of the number of titles.
[0012]
In the present invention, when recording information on the first medium, in the case of scheduled recording and timer recording, a recording rate is set according to the remaining capacity of the divided area to be recorded and the recording time, According to this recording rate, recording is performed on each of the plurality of divided areas so as not to exceed the range of the maximum recording capacity of the second medium, which is the capacity of the area. Thus, information is always recorded in the divided area of the first medium within the range of the maximum recording capacity of the second medium according to the recording rate calculated in advance.
[0013]
In the present invention, when recording information on the first medium, in the case of normal recording, the maximum recording capacity of the second medium, which is the capacity of the area, is assigned to each of the plurality of divided areas. If it exceeds the range, the recording is stopped or recording is continued to another area. Thus, even during normal recording, information is always recorded in the divided area of the first medium within the range of the maximum recording capacity of the second medium.
[0014]
In an exemplary embodiment of the present invention, the first medium is a hard disk and the second medium is a recordable optical disk. In this case, the compatibility between the devices can be provided by setting both the application format for recording information on the hard disk and the application format used for recording information on the optical disk to the DVD-Video format. The optical disc dubbed by the apparatus according to the present invention can be reproduced by another apparatus.
[0015]
[Embodiment of the invention]
FIG. 1 shows a block diagram of a DVD recorder 100 with a built-in hard disk, which is an example of an information recording apparatus according to the present invention. 1 is a video A / D converter which converts a video signal to be recorded into a digital signal, 2 is an audio A / D converter which converts an audio signal to be recorded into a digital signal, and 3 is a video D which converts a reproduced video signal into an analog signal The / A converter 4 and the audio D / A converter 4 convert a reproduced audio signal into an analog signal. Reference numeral 5 denotes an MPEG2 encoder for encoding a video signal and an audio signal to be recorded into MPEG2 format data, and reference numeral 6 denotes an MPEG2 decoder for decoding an MPEG2 format video signal and audio signal to be reproduced. Reference numeral 7 denotes a stream control unit that controls a video or audio stream, and reference numeral 8 denotes a controller that includes a microprocessor that controls the above units. Reference numeral 9 denotes an interface, which is connected to a hard disk drive (first drive) 10 and an optical disk drive 20 (second drive), so that information on the hard disk 11 can be recorded on the optical disk 21. I have. Reference numeral 11 denotes a hard disk (first medium) provided in the hard disk drive 10, and reference numeral 21 denotes an optical disk (second medium) on which information is recorded and reproduced by the optical disk drive 20. The optical disc 21 is a recordable DVD such as a DVD-R, a DVD-RAM, and a DVD-RW. The maximum recording capacity of the hard disk 11 is, for example, 120 GB, and the maximum recording capacity of the optical disk 21 is 4.7 GB.
[0016]
FIG. 2 is a schematic diagram showing a recording area of the hard disk 11. The recording area of the hard disk 11 is logically or physically divided into a plurality of divided areas A, B, C,... N in units of 4.7 GB, which is the maximum recording capacity of the optical disk 21. In the case of logical division, a divided area is formed by dividing the directory according to the tag information on the file system. In the case of physical division, the divided area is determined by determining the sector address range for each area and dividing the partition. Is formed. Since these division methods are all publicly known, the details are omitted.
[0017]
A1 and A2 are titles recorded in the divided area A, B1 is a title recorded in the divided area B, and C1, C2, and C3 are titles recorded in the divided area C. When such information is recorded on the hard disk 11, the information is recorded in each of the plurality of divided areas A, B, C,... N so as not to exceed 4.7 GB. That is, the total capacity of titles A1 and A2, the capacity of title B1, and the total capacity of titles C1, C2, and C3 are all 4.7 GB or less.
[0018]
As described above, in order for the information to be recorded in each of the divided areas A, B, C,... N to fall within the range of 4.7 GB, the following processing is performed when the hard disk drive 10 records information on the hard disk 11. Do. First, in the case of scheduled recording and timer recording, the time required for recording is known in advance, so before recording, check the remaining capacity of the divided area to be recorded, and set the recording rate according to the remaining capacity and the recording time. Set. The recording rate is a value corresponding to, for example, standard recording or high-speed recording. Then, according to the recording rate, recording is performed so that each of the divided areas A, B, C,... N does not exceed the range of 4.7 GB. Next, in the case of normal recording, since the time required for recording is not known in advance, the recording is stopped if the divided areas A, B, C,... N exceed the range of 4.7 GB, or Recording is continued to another area.
[0019]
By the way, in the present invention, as shown in FIG. 3, an application format for recording information on the hard disk 11 is the same as an application format used for recording information on the optical disk 21, and in each case, the DVD-Video format is used. It has become. This is one of the important features of the present invention. When the recording area of the hard disk 11 is divided into 4.7 GB divided areas A, B, C,. ., N can be handled as equivalent to the optical disk 21. In FIG. 3, since the optimum system differs depending on the media handled, the hard disk 11 employs a hard disk file system, and the optical disk 21 employs a UDF (Universal Disk Format). Although there is no unification between the disk and the optical disk 21, this does not affect the present invention.
[0020]
As described above, since the divided areas A, B, C,... N of the hard disk 11 are equivalent to the optical disk 21, when dubbing from the hard disk 11 to the optical disk 21, the information of the hard disk 11 is moved to the optical disk 21 as it is. Alternatively, only copying is required, and the format conversion processing is not required. That is, as shown in FIG. 2, the titles A1 and A2 recorded in the divided area A are directly recorded on the optical disk 21a by moving or copying, and the title B1 recorded in the divided area B is directly moved or copied by the optical disk 21b. And the titles C1, C2, and C3 recorded in the divided area C are directly recorded on the optical disk 21c by moving or copying.
[0021]
4 to 7 are diagrams for explaining an example of an operation procedure when dubbing from the hard disk 11 to the optical disk 21, and show screens displayed on a monitor device (not shown) connected to the DVD recorder 100. ing. Hereinafter, the dubbing procedure will be described with reference to these screens. First, on the setting screen shown in FIG. 4, the user operates the cursor keys of the remote controller (not shown) to select “HDD → DVD dubbing” and presses the enter key. Then, the screen switches to the group selection screen shown in FIG. Here, five hard disk areas HDD1 to HDD5 are displayed as a group. For example, HDD1 corresponds to the above-described divided area A, HDD2 corresponds to the divided area B, and HDD3 corresponds to the divided area C. .
[0022]
When dubbing the contents of the HDD 1, "HDD 1" is selected with the cursor key of the remote controller, and the enter key is pressed. In this group selection screen, after selecting a group, the contents of the selected group can be confirmed by operating the cursor keys. In the example of FIG. 5, “HDD1” is selected, and the contents of the titles A1 and A2 (here, serial drama) recorded in the divided area A are displayed.
[0023]
When a group is selected and the enter key of the remote controller is pressed, the screen switches to a confirmation screen shown in FIG. A message prompting the user to select a move or copy is displayed on this confirmation screen. When moving or copying is selected with the cursor keys of the remote control and the enter key is pressed, dubbing is started. In the case of transfer, the original information is erased from the hard disk 11, and in the case of copy, the original information remains on the hard disk 11. FIG. 7 is an example of a screen displayed during dubbing. When the optical disc 21 is 4 × speed, the time required for dubbing is about 15 minutes at the maximum.
[0024]
Thus, in the above embodiment, since the information recorded in the divided areas A, B, C,... N of the hard disk 11 is always within the range of 4.7 GB, dubbing from the hard disk 11 to the optical disk 21 is performed. At the time of re-encoding, no re-encoding due to capacity over will occur at all. As a result, the problem that recording and reproduction cannot be performed for a long time and the problem that image quality deteriorates are solved.
[0025]
When dubbing is performed, as shown in FIG. 5, based on the designation of the divided area (HDD 1 in FIG. 5) of the hard disk 11 on which the information to be dubbed is recorded, the information is recorded in the divided area. Since the recorded information is recorded on the optical disc 21, even when a plurality of titles are recorded in the divided area, dubbing is performed by designating a recording mode after creating a dubbing list by designating titles one by one. This eliminates the need for complicated operations such as performing, and allows dubbing to be performed with a simple operation regardless of the number of titles.
[0026]
Further, since there is no need for re-encoding, the recording mode for dubbing is always a high-speed mode, and there is no need to specify the mode. Furthermore, since dubbing is performed without re-encoding, the situation where the encoder or decoder is occupied during dubbing does not occur, and back recording and back reproduction by the hard disk 11 become possible.
[0027]
Also, since the application format for recording information on the hard disk 11 and the application format used for recording information on the optical disk 21 are both DVD-Video formats, compatibility between the devices can be provided, The optical disc 21 dubbed by the DVD recorder 100 according to the present invention can be reproduced by another device.
[0028]
Further, the hardware configuration of FIG. 1 is exactly the same as the conventional one, and the above-described functions can be realized without adding or changing new hardware.
[0029]
In the embodiment described above, the DVD-R, the DVD-RAM, and the DVD-RW are described as examples of the optical disc 21, but the present invention is applicable to other media such as a CD-R, a CD-RW, and an MD. Can be applied.
[0030]
[Effect of the invention]
According to the present invention, by eliminating re-encoding, it is possible to eliminate a situation in which recording or playback cannot be performed for a long time or to deteriorate image quality, and it is also possible to perform a quick dubbing without a format conversion process during dubbing. It becomes.
[Brief description of the drawings]
FIG. 1 is a block diagram of a DVD recorder with a built-in hard disk according to the present invention.
FIG. 2 is a schematic view for explaining dubbing according to the present invention.
FIG. 3 is a diagram showing a system configuration of a hard disk and an optical disk according to the present invention;
FIG. 4 is a diagram illustrating a dubbing operation procedure.
FIG. 5 is a diagram illustrating a dubbing operation procedure.
FIG. 6 is a diagram illustrating a dubbing operation procedure.
FIG. 7 is a diagram illustrating a dubbing operation procedure.
FIG. 8 is a diagram showing a system configuration of a conventional hard disk and an optical disk.
FIG. 9 is a schematic diagram for explaining conventional dubbing.
[Explanation of symbols]
Reference Signs List 10 hard disk drive 11 hard disk 20 optical disk drive 21, 21a-21c optical disk 100 DVD recorder A-N with built-in hard disk

Claims (7)

An information recording device comprising a hard disk drive that records information on a hard disk and an optical disk drive that records information on a recordable optical disk, and capable of recording information on the hard disk onto the optical disk.
The recording area of the hard disk is logically or physically divided in advance into a plurality of divided areas in units of the maximum recording capacity of the optical disc,
The application format for recording information on the hard disk is the same as the application format used when recording information on the optical disk,
When the hard disk drive records information on the hard disk, in the case of scheduled recording and timer recording, set a recording rate according to the remaining capacity of the divided area to be recorded and the recording time, and according to this recording rate, For each of the plurality of divided areas, recording is performed so as not to exceed the range of the maximum recording capacity of the optical disc which is the capacity of the area, and in the case of normal recording, for each of the plurality of divided areas, Stop the recording if it exceeds the range of the maximum recording capacity of the optical disc that is the capacity of the area, or perform recording continuously to other areas,
When dubbing from a hard disk to an optical disk, the optical disk drive reads information recorded in the specified divided area on one sheet based on designating the divided area of the hard disk in which information to be dubbed is recorded. An information recording device, which is directly moved or copied onto an optical disc and recorded. A first drive that records information on a first medium; and a second drive that records information on a second medium having a smaller recording capacity than the first medium. In an information recording apparatus capable of recording information of a medium on a second medium,
The recording area of the first medium is previously divided into a plurality of divided areas in units of the maximum recording capacity of the second medium,
An application format for recording information on the first medium is the same as an application format used for recording information on the second medium;
When the first drive records information on the first medium, each of the plurality of divided areas should not exceed the maximum recording capacity of the second medium, which is the capacity of the area. Record information,
When dubbing from the first medium to the second medium, the second drive moves or copies information recorded in one divided area of the first medium to one second medium as it is. An information recording device characterized in that the information is recorded by recording. The information recording device according to claim 2,
When dubbing from the first medium to the second medium, the information recorded in the divided area is designated based on the designation of the divided area of the first medium in which the information to be dubbed is recorded. 2. An information recording apparatus for recording on a second medium. The information recording device according to claim 2 or 3,
When recording information on the first medium, in the case of scheduled recording and timer recording, a recording rate is set in accordance with the remaining capacity of the divided area to be recorded and the recording time. An information recording apparatus that performs recording on each of the divided areas so as not to exceed the range of the maximum recording capacity of the second medium, which is the capacity of the area. The information recording device according to claim 2 or 3,
When recording information on the first medium, in the case of normal recording, recording is performed if each of the plurality of divided areas exceeds the maximum recording capacity of the second medium which is the capacity of the area. An information recording apparatus characterized in that recording is stopped or recording is continuously performed in another area. The information recording device according to any one of claims 2 to 5,
An information recording apparatus, wherein the first medium is a hard disk, and the second medium is a recordable optical disk. The information recording device according to claim 6,
An information recording apparatus, wherein an application format for recording information on a hard disk and an application format used for recording information on an optical disk are both DVD-Video formats.

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