WO2003102949A1

WO2003102949A1 - Data duplicate recording device, data duplicate recording method, data duplicate recording program, and machine-readable recording medium containing the data duplicate recording program

Info

Publication number: WO2003102949A1
Application number: PCT/JP2003/006797
Authority: WO
Inventors: Shuichi Watanabe; Yasuaki Tokumo; Hiroyuki Katata
Original assignee: Sharp Kabushiki Kaisha
Priority date: 2002-05-31
Filing date: 2003-05-29
Publication date: 2003-12-11
Also published as: JPWO2003102949A1; AU2003241940A1

Abstract

A data duplicate recording device reads out data from a first recording medium (171A) and records the read out data into a second recording medium (171B). Here, if the coding method of the read out data is judged not to be a predetermined coding method enabling reproduction of data from the second recording medium (171B), the read out data is converted into coding data based on the predetermined coding method. Moreover, for the read out data, it is also judged whether to rearrange data according to management information read out together with the data. According to the judgment result, data is rearranged so as to obtain reproduction without a break. The data processed so as to follow the predetermined coding method and be aligned continuously are successively recorded in a series of area of the second recording medium (171).

Description

Description Data duplication recording device, data duplication recording method, data duplication recording program, and machine-readable recording medium recording data duplication recording program

The present invention relates to a data duplication recording apparatus, a data duplication recording method, a data duplication recording program, and a machine-readable recording medium recording a data duplication recording program, and more particularly to digital data from one recording medium to another recording medium. The present invention relates to a data duplication recording device, a data duplication recording method, a data duplication recording program, and a machine-readable recording medium recording a data duplication recording program for duplicating and recording. Background art

In recent years, digital cameras for capturing moving images and still images have become widespread. One of the reasons for its widespread use is moving picture compression standards represented by MPEG (Moving Picture Experts Group) -1, MPEG-2 and MPEG-4, and still images such as JPEG (Joint Photographic Experts Group). Establishment of compression standards is one example. Image data captured by a digital camera is compressed and encoded by these image compression techniques, and recorded on a recording medium as a moving image file or a still image file. As the recording medium, a memory card such as a compact and removable Compact Flash (registered trademark) card, an SD (Secure Digital) card, a smart media card, and a memory stick (registered trademark) is usually used. Moving image data and still image data recorded on a memory card can be backed up on a hard disk built into a personal computer (hereinafter referred to as “PCj”), MO (agneto optical disk), DVD-RAM ( They are often copied and stored on large-capacity recording media such as Digital Versatile Disks (Random Access Memory).

For example, Japanese Patent Application Laid-Open No. 11-66736 discloses that moving image data of the MPEG standard and still image data of the JPEG standard recorded on a PC card are recorded on a large-capacity recording medium. A DVD-recording device for copying to RAM is disclosed. Japanese Patent Application Laid-Open No. 11-331742 discloses an image recording apparatus for copying data recorded on a PC card to an optical disc such as a CD-R. Further, Japanese Patent Application Laid-Open No. 9-183535 discloses a memory card adapter for copying from a small memory card to a large memory card. In addition, moving image data and still image data copied or backed up to DVD-RAM, CD-R, etc. are often reproduced or edited on personal computers using software.

However, the recording apparatus described in JP-A-11-166736, the image recording apparatus described in JP-A-11-331742, and the memory card adapter described in JP-A-9-83935 are disclosed. For example, irrespective of the type of the recording medium at the copy destination, the encoded data recorded on the recording medium at the copy source is transferred to the recording medium at the copy destination while maintaining the encoding method of the encoded data at the copy source. I was copying. For this reason, even when a plurality of encoded data recorded on the copy source recording medium includes encoded data encoded by a plurality of encoding methods, data of the plurality of encoding methods is not included. The data is directly copied to the copy destination recording medium. For this reason, in order to reproduce the encoded data recorded on the recording medium at the copy destination, the PC for reproducing the encoded data had to have a plurality of types of decoding functions according to the encoding method. For example, if the encoded data encoded by MPEG-2 and the encoded data encoded by MPEG-4 are copied to a copy destination recording medium, a PC is used to reproduce this recording medium. Needs to have a function of determining an encoding method, an MP EG-2 decoding function, and an MP EG-4 decoding function.

Also, when the copy destination recording medium is played back by a specific playback device, it is necessary to record in a recording format that conforms to a standard that can be played back by the playback device. For example, when a DVD-VR (Video Recording) playback device plays back encoded data recorded on a DVD-RAM, it is necessary to record the encoded data on a DVD-RAM in a recording format conforming to the DVD-VR standard. Furthermore, the encoding system conforming to the DVD-VR standard needs to be MPEG-2. For this reason, if code data recorded on a copy source recording medium in a format that does not conform to the DVD-VR standard is directly copied to a copy destination recording medium, the copy destination recording medium is transferred to a DVD-VR playback device. Could not be played. As described above, with the development of the encoding technology based on the MPEG standard and the increase in the capacity of various types of recording media, an environment in which a large amount of digital video data is recorded or stored on a portable, removable recording medium Is getting ready. Portable recording media include, for example, card media of semiconductor memory such as an SD memory card (hereinafter referred to as semiconductor media), optical disc media such as CD (Compact Disk) and DVD (Digital Versatile Disk). ).

The above-mentioned semiconductor medium has a small medium itself and does not require a mechanism for rotating the medium like a disk medium, so that the drive device can be made very small and excellent in portability. However, the price of semiconductor media is higher than the storage capacity. On the other hand, the unit price of disk media is low, and the recording capacity by itself is generally larger than that of semiconductor media. However, the portability of disk media is limited to some extent, such as the need for a rotation mechanism in the drive unit.

For the reasons mentioned above, when using the camera when taking a picture while carrying it, use a device that uses semiconductor media, copy the video data recorded on the semiconductor media to inexpensive disk media, and save a large amount. A form is conceivable. For this reason, a data duplication recording device that copies video data from semiconductor media to disk media is required. By erasing video data recorded on semiconductor media after copying it, the semiconductor media can be used repeatedly for shooting.

Fig. 28 shows a schematic configuration of a conventional device for copying and recording data from semiconductor media to disk media. In FIG. 28, the recording medium 1 corresponds to the semiconductor medium, and the recording medium 2 corresponds to the disk medium. The operation performed by this data duplication recording apparatus is a so-called all copy operation of copying all digital data recorded in the data recording area of the recording medium 1 onto the data recording area of the recording medium 2. Processing such as reading data from the recording medium and writing data to the recording medium is based on a small recording area called a "sector" that divides the data recording area on the recording medium where data can be recorded into a certain length. Generally, data pieces (sector data) recorded in a sector are used as a unit. In other words, digital data such as video data is divided into data pieces of sector size and recorded. It is recorded in each sector of the recording medium.

In FIG. 28, the data duplication recording device is composed of a data reading unit 1201, a data writing unit 122, a management information reading unit 1203, a management information generating unit 122, and a management information writing unit. 1 205 is provided.

The data reading unit 1 201 reads out data on the data recording area recorded on the recording medium 1 for each sector. Further, the data writing unit 122 inputs the data read by the data reading unit 122 and writes the data to the recording medium 2 in sector units. However, at this time, the size of the sector of the recording medium 1 and the size of the sector of the recording medium 2 are not necessarily equal. As the sector size, a unique size is determined for each type of recording media. If the sizes of the sectors are different, the data writing unit 122 executes a process of adjusting the data read by the data reading unit 1221 according to the size of the sector of the recording medium 2.

The file system for managing data may be different between the above two types of recording media, that is, semiconductor media and disc media. A file system refers to sector data that is physically recorded on a recording medium, and provides management information that manages information relating to recording arrangement on the recording medium that indicates a connection relationship between the sector data. It forms a logical data structure such as directories and files based on data and management information. For example, an SD memory card known as a semiconductor medium manages data using a file system called FAT (File Allocation Table). On the other hand, in a disk medium such as DVD, data is managed by a file system called UDF (Universal Disk Format). In any case, the management information is recorded on the recording medium together with the data.

For this reason, in the data duplication recording apparatus shown in FIG. 28, the data in the data area of the recording medium is copied, and the management information reading section 1203, the management information generating section 122, and the management information writing section are written. The unit 1255 processes as follows so that the management information of the recording medium 1 becomes the management information for the recording medium.

The management information reading unit 1203 reads the management information corresponding to the sector data recorded on the recording medium 1, and the management information generation unit 1204 stores the read management information as The management information of the recording medium 2 is generated by converting to a format corresponding to the sector data to be duplicated and recorded on the recording medium 2. At this time, when additional processing such as the format conversion of the sector data described above is performed when data is written to the recording medium 2 by the data writing section 122, the data writing section 122 The additional processing information is output from 2 to the management information generating unit 124, and the additional processing information is used by the management information generating unit 124 to generate the management information of the recording medium 2. The management information writing unit 1205 records the generated management information on the recording medium 2. Thus, by generating and recording the management information corresponding to the recording medium 2, the duplication recording of the data from the recording medium 1 to the recording medium 2 is completed.

When data recorded on the semiconductor medium of the recording medium 1 is duplicated and recorded on the disk medium of the recording medium 2 in this manner, the semiconductor medium uses sector data recorded in physically adjacent sectors. Is not necessarily continuous data.

Figures 29 to 31 show examples of data recorded on semiconductor media. In FIG. 29, the original data 1301 recorded on the semiconductor medium is shown. In FIG. 30, the original data 1301 is divided into sector sizes and recorded on each sector. The upper recording data 1302 is shown, and FIG. 31 shows the management information 1303 of the semiconductor medium corresponding to the recording data 1302.

The original data 1301 in FIG. 29 includes a series of sector data AP. When the original data 1301 is recorded on the semiconductor medium, the original data 1301 is divided into sector sizes as shown in the recorded data 1302 in FIG. 30 and is obtained by the division. The sector data AP is recorded in the sectors T1 to T16 of the semiconductor medium. The recording order of the sector data differs from the physical positional relationship of the sectors. The data recorded in this manner is referred to herein as fragmented data. For example, when dealing with video data, such fragmentation of the data can be done by dividing the recorded video data, editing operations when combining / deleting, and adding additional video data to the media after the editing operation. Recording-often caused by repeated processing. In the fragmented data, the connection relation and the order relation are indicated while the sector is specified by the management information 133. A point to be especially noted about the fragmented data in the data duplication recording using the semiconductor medium and the disk medium is the difference in the time required for seeking that occurs when reading data from the medium. Data seek is performed when reading continuous data recorded in physically separated sectors, such as sector data E and F, G and H, and I and J shown in Figures 29 to 31. The data is not read while moving the read position. When reading recorded data for continuous playback, the seek time is hardly a problem with semiconductor media, but this seek time cannot be ignored with disk media.

Here, a DVD is taken as an example of a disk medium, and recording in accordance with the DVD-VR (Video Recording) standard is considered as a means for recording video data. When playing back video data recorded on media with DV D-VR, data cannot be read during seeking, so a buffer may be provided to reduce data shortage when seeking occurs. Absorb and process so that the playback video is not interrupted. However, in a situation where seeks occur more frequently than a certain limit, even if the above processing cannot absorb the data shortage at the time of the seek occurrence, the reproduced video will be interrupted. In order to avoid this, the DVD-VR standard specifies the minimum data length that must be physically continuous for video data on media, and the data recorded on media is The condition is to satisfy this. In the DVD-VR standard, this continuously recorded data area is called CDA (Contiguous Data Area), and the minimum data length to be satisfied by this CDA is given.

Japanese Patent Application Laid-Open No. 2000-260163 discloses a video data recording process in consideration of CDA. However, no technology has been shown for copying data between media to meet the requirements of CDA.

As described above, when the above-described fragmented video data recorded on the semiconductor medium is copied as it is to the disk medium, it is not always possible to satisfy the conditions of the CDA described above. For this reason, simply copying the video data on the semiconductor media to the disc media as it is does not guarantee that the video can be reproduced without interruption using the data on the disc media. Disclosure of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to provide a data duplication recording apparatus for duplicating data of one recording medium and recording the data on another recording medium different from the other, so that data can be properly reproduced from the other recording medium. Another object of the present invention is to provide a data duplication recording method, a data duplication recording program, and a machine-readable recording medium recording the data duplication recording program.

In order to achieve the above object, according to one aspect of the present invention, a data duplication recording device duplicates data of a first recording medium and transfers the duplicated data to a second recording medium different from the first recording medium. To record, read data from the first recording medium, process the read data according to a predetermined rule to properly reproduce the data of the second recording medium, and process the processed data. Is recorded on the second recording medium.

Therefore, when the data on the first recording medium is duplicated and recorded on the second recording medium, the data can be properly reproduced from the second recording medium.

Preferably, the data duplication recording apparatus described above includes: a reading unit that reads the encoded data recorded on the first recording medium; and whether the encoding scheme of the read encoded data is a predetermined encoding scheme. A coding method determining means for determining whether or not the coding method is not a predetermined coding method; and converting the read coded data into coded data of the predetermined coding method. And recording means for recording the converted encoded data on the second recording medium.

Further, in the above-described apparatus, when the determined encoding method is a predetermined encoding method, the read encoded data may be recorded on a second recording medium. Further, if the determined encoding method is not the predetermined encoding method, the converted encoded data and the read (unconverted) encoded data may be recorded on the second recording medium. Good.

According to the present invention, the encoded data recorded on the first recording medium is read by the data duplication recording device, and whether or not the encoding method of the read encoded data is a predetermined encoding method is determined. If the determined coding method is not the predetermined coding method, the read coded data is converted into coded data of the predetermined coding method, and the converted coded data is converted to the second coding data. It is recorded on a recording medium. Because of this, the first record If the encoded data recorded on the medium follows an encoding method different from the predetermined encoding method that can be reproduced by the reproducing device that reproduces the data on the second recording medium, the encoding read from the first recording medium The data is converted into encoded data according to a predetermined encoding method, and the converted encoded data is recorded on the second recording medium.

Further, when the determined encoding system is the predetermined encoding system, the read encoded data is recorded on the second recording medium, and the determined encoding system is not the predetermined encoding system. In this case, the converted encoded data is recorded on the second recording medium. That is, if the encoded data read from the first recording medium follows the same encoding scheme as a predetermined encoding scheme that can be reproduced by a reproducing apparatus that reproduces data on the second recording medium, the first recording medium The encoded data read from is recorded on the second recording medium as it is. As a result, various kinds of data including moving image data encoded and recorded by different encoding methods can be copied to be reproducible by a specific reproducing apparatus. In addition, when conversion is not necessary, the read encoded data is recorded as it is, so that it is possible to suppress deterioration of various data including moving image data due to decoding and re-encoding.

Preferably, the recording unit further records the read encoded data on the second recording medium when the determined encoding method is not the predetermined encoding method.

According to the present invention, when the determined encoding method is not the predetermined encoding method, the read encoded data is recorded on the second recording medium together with the converted encoded data. For this reason, if the read coded data follows a coding method different from a predetermined coding method that can be reproduced by a reproducing apparatus that reproduces data on the second recording medium, the read coded data is converted to a predetermined coding method. The encoded data is converted into encoded data of the system, and the read encoded data is recorded on the second recording medium together with the converted encoded data. As a result, in a reproducing apparatus in which the reproducible encoding method is restricted, it is possible to reproduce the coded data of the predetermined code method recorded on the second recording medium, and it is also possible to reproduce the reproducible code. In an environment where the encoding scheme is not restricted, encoded data without degradation due to conversion can be reproduced.

Preferably, the encoded data conversion means has switching means for switching whether or not to convert the encoded data. According to the present invention, whether or not to convert the encoded data read from the first recording medium is switched. Therefore, when it is desired to prohibit re-encoding during the conversion of the encoding method, or when moving image data by re-encoding If it is desired to avoid the deterioration of various data including, the encoded data read from the first recording medium can be prevented from being converted.

Preferably, in the above data duplication recording apparatus, the reading means for reading the encoded data recorded on the first recording medium, and the encoding method of the read encoded data is a predetermined encoding method. Encoding method judging means for judging whether or not, encoded data converting means for converting read encoded data to encoded data of a predetermined encoding method, read encoded data or conversion Recording means for recording any of the encoded data thus obtained on the second recording medium, and if the determined encoding method is not the predetermined encoding method, the read encoded data is transmitted to the code-data conversion means. And switching means for switching to output to the recording means when the determined encoding method is a predetermined encoding method.

According to the invention, the data is recorded on the first recording medium by the data duplication recording device; the encoded data is read, and whether the encoding method of the read encoded data is the predetermined encoding method or not. It is determined whether or not. If the determined coding method is not the predetermined coding method, the read coded data is output to the coded data conversion means, converted into coded data of the predetermined coding method, and the converted code is output. The encoded data is recorded on the second recording medium. On the other hand, if the determined encoding method is the predetermined encoding method, the read code data is recorded on the second recording medium. As a result, various types of data including moving image data encoded and recorded by different encoding methods can be copied to be reproducible by a specific reproducing apparatus, and if no conversion is necessary, read out. Since the encoded data thus copied is copied as it is, it is possible to suppress deterioration of various data including moving image data due to decoding and re-encoding.

Preferably, the above-mentioned data duplication recording device is configured to duplicate continuous data from a first recording medium in which continuous data is divided into a plurality of unit data and recorded in advance, to a second recording medium. It has the following configuration. That is, an ordering means for reading a plurality of unit data from the first recording medium and outputting the data in a continuous order, and sequentially inputting the plurality of unit data output from the ordering means to a series of areas on the second recording medium. And data recording means for recording the data in the data storage device.

Therefore, even if continuous data is recorded at a discontinuous position on the first recording medium or is recorded at a continuous position, the ordering means and the data recording means make the data in a continuous order. It can be copied as a series of data to a series of areas of the second recording medium at the copy destination. As a result, when data is reproduced from the second recording medium at the duplication destination, the occurrence of seek time can be suppressed, and continuous data can be reproduced without interruption.

Preferably, when reading the plurality of unit data from the first recording medium, the ordering means reads the plurality of unit data in a continuous order.

Accordingly, the ordering of the plurality of unit data by the ordering means can simplify the processing required for the ordering by reading the plurality of unit data in a continuous order when reading from the first recording medium of the duplication source.

Preferably, the data duplication recording apparatus further includes a predetermined recording area, and the ordering means reads a plurality of unit data from the first recording medium, records the plurality of unit data in the predetermined recording area, and records the plurality of recorded data. The unit data is read from the specified recording area in a continuous order.

Therefore, the ordering by the ordering means is performed on a predetermined recording area after reading the data from the first recording medium of the duplication source, so that the reading process and the ordering process are separated. As a result, data can be read from the first recording medium at high speed during copy recording, and the copy recording process can be speeded up.

In the above-described data duplication recording apparatus, preferably, when a plurality of unit data are recorded in each of the plurality of unit recording areas on the first recording medium, the ordering means includes a plurality of unit data. Determining means for determining whether or not a plurality of unit recording areas in which are recorded in the first recording medium in a continuous order; and determining a plurality of unit recording areas based on a determination result that the plurality of unit recording areas are not positioned by the determining means. And rearranging means for rearranging and outputting the unit data in a continuous order.

Therefore, when data is copied from the first recording medium of the copy source to the second storage medium of the copy destination, the data is continuously recorded in the unit recording area at a discontinuous position on the first recording medium of the copy source. The determination means determines whether or not data to be recorded is recorded. Only when it is determined that continuous data is recorded in the unit recording area at the position, rearrangement is performed by the rearranging means, and data is recorded in a series of areas of the second recording medium. Therefore, the execution of the sorting process can be minimized.

Preferably, in the above-mentioned data duplication recording apparatus, the minimum data length in which the unit data is to be recorded in the second recording medium in accordance with the sequential order is defined, It is determined for each data length of whether or not the unit data follows the above-described sequence.

Therefore, when determining whether or not to perform rearrangement by the determination means, the minimum data length in which data is to be recorded in accordance with the above-described sequential order specified in the second recording medium of the copy destination is considered. By making the determination in this way, it is guaranteed that the data can be reproduced without interruption when reproducing the data from the second recording medium at the duplication destination.

In the data copy recording device described above, preferably, when the management information for managing the information on the arrangement of the data on the recording medium is recorded on the recording medium, the determination unit reads out from the first recording medium. Based on the management information, it is determined whether or not a plurality of unit recording areas in which a plurality of unit data are recorded are located in the first recording medium in a continuous order.

Therefore, whether or not the plurality of unit recording areas in which the plurality of unit data are recorded are located in the continuous order on the first recording medium is determined by the management information recorded on the first recording medium of the copy source. Based on this, it can be easily determined.

The data duplication recording device preferably generates management information for the second recording medium when the data is duplicated and recorded on the second recording medium by the data recording means, and Management information generating means for recording on a recording medium.

Therefore, when copying and recording data from the first recording medium to the second recording medium, management information for the second recording medium can also be recorded on the second recording medium. Therefore, data duplication recording and management information generation recording can be performed at the same time, and data duplication recording can be performed efficiently.

In the above data duplication recording apparatus, preferably, the second recording medium has a plurality of unit recordings. A recording area, and when the size of the unit area of the first recording medium is different from the size of the unit area of the second recording medium, the data recording means reduces the size of the input unit data to the size of the unit area of the second recording medium. Align.

Therefore, when duplicating and recording data, if the size of the unit area of the first recording medium of the duplication source and the second recording medium of the duplication destination are different, the size of the unit data will be the unit of the second recording medium of the duplication destination. It is recorded in conformity with the size of the area. Therefore, at the time of reproducing data from the second recording medium, it is possible to prevent a reproduction error due to such size mismatch.

In the data duplication recording apparatus described above, preferably, dummy data is added to the unit data for the above-mentioned size matching. Therefore, the size can be easily adjusted by adding dummy data.

In the data duplication recording apparatus described above, preferably, for size matching, the management information includes information indicating the size of the unit data recorded in the unit area. Therefore, the size of the unit data recorded in the unit area can be confirmed by referring to the management information, and the size can be matched based on the confirmation result.

In order to achieve the above object, according to another aspect of the present invention, a data duplication recording method duplicates data of a first recording medium prepared in advance and sets a different data from the first recording medium. In order to record data on the prepared second recording medium, data is read from the first recording medium, and a predetermined rule for properly reproducing the read data from the second recording medium. And records the processed data on a second recording medium.

Preferably, the above-described data duplication recording method includes the steps of, when duplicating and recording encoded data from the first recording medium to the second recording medium, encoding the encoded data recorded on the first recording medium. A step of reading, and a step of determining whether or not the coding scheme of the read coded data is a predetermined coding scheme. If the determined coding scheme is not the predetermined coding scheme, the read is performed. Converting encoded data into encoded data of a predetermined encoding method; and recording the converted encoded data on a second recording medium. And the top. The method is preferably performed by a computer.

According to the present invention, it is possible to provide a data duplication recording method for copying various data including moving image data recorded by being encoded by different encoding systems so as to be reproducible by a specific reproducing apparatus. .

The above-described data duplication recording method is preferably performed when the continuous data is copied to a second recording medium from a first recording medium in which continuous data is divided into a plurality of unit data and recorded in advance. An ordering step of reading a plurality of unit data from the first recording medium and outputting them in a continuous order; and sequentially inputting the plurality of unit data output from the ordering step to a series of areas of the second recording medium. And a data recording step of recording the data in the data storage.

Therefore, even if continuous data is recorded at a discontinuous position on the first recording medium or is recorded at a continuous position, the ordering step and the data recording step form a series of data in a sequential order. Data can be copied to the second recording medium at the copy destination. Thereby, when data is reproduced from the second recording medium at the duplication destination, continuous data can be reproduced without interruption.

According to still another aspect of the present invention, there is provided a program for causing a computer to execute the above-mentioned data duplication recording method.

According to still another aspect of the present invention, there is provided a machine-readable recording medium recording the above-described program. This machine is, for example, a computer. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a block diagram schematically showing the configuration of the data duplication recording apparatus according to the first embodiment.

FIG. 2 is a functional block diagram schematically showing the functions of the data duplication recording apparatus according to the first embodiment.

FIG. 3 is a functional block diagram showing the function of the code data conversion unit of the data duplication recording apparatus according to the first embodiment.

FIG. 4 is a flowchart showing the flow of encoded data conversion processing executed by the data duplication recording apparatus according to the first embodiment. FIG. 5 is a functional block diagram illustrating an outline of functions of the data duplication recording apparatus according to the second embodiment.

FIG. 6 is a flowchart showing the flow of encoded data conversion processing executed by the data duplication recording apparatus according to the second embodiment.

FIG. 7 is a functional block diagram showing an outline of functions of the data duplication recording apparatus according to the third embodiment.

FIG. 8 is a functional block diagram illustrating functions of an encoded data conversion unit of the data duplication recording device according to the third embodiment.

FIG. 9 is a flowchart illustrating a flow of encoded data conversion processing executed by the data duplication recording apparatus according to the third embodiment.

FIG. 10 is a functional block diagram showing an outline of functions of the data duplication recording apparatus according to the fourth embodiment.

FIG. 11 is a flowchart showing a flow of encoded data conversion processing executed by the data duplication recording apparatus according to the fourth embodiment.

FIG. 12 is a schematic configuration diagram of a data duplication recording apparatus according to the fifth embodiment of the present invention.

FIGS. 13 and 14 are diagrams showing examples of data on a recording medium to be duplicate-recorded in the fifth embodiment of the present invention.

FIGS. 15 and 16 are diagrams for explaining the data rearrangement processing in the data duplication recording apparatus according to the fifth embodiment of the present invention.

FIG. 17 is a flowchart showing a data duplication recording method according to the fifth embodiment of the present invention.

FIG. 18 is a flowchart showing a data rearrangement procedure in data duplication recording according to the fifth embodiment of the present invention.

FIGS. 19 and 20 are diagrams for explaining another rearrangement process of data in the data duplication recording apparatus according to the fifth embodiment of the present invention.

FIG. 21 and FIG. 22 are diagrams illustrating still another data rearrangement process in the data duplication recording apparatus according to the fifth embodiment of the present invention.

FIG. 23 is a schematic configuration diagram of a data duplication recording apparatus according to the sixth embodiment of the present invention. It is.

FIG. 24 is a flowchart of a first part showing a data duplication recording method according to the sixth embodiment of the present invention.

FIG. 25 is a second node illustrating the data duplication recording method according to the sixth embodiment of the present invention. It is one flowchart.

FIG. 26 is a flowchart of a third part showing a data duplication recording method according to the sixth embodiment of the present invention.

FIG. 27 is a configuration diagram of a computer that executes a data duplication recording program according to the seventh embodiment.

FIG. 28 is a schematic configuration diagram of a data duplication recording apparatus according to the related art.

FIG. 29, FIG. 30 and FIG. 31 are diagrams illustrating the state of fragmentation of video data recorded on a recording medium. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same reference numerals indicate the same or corresponding members, and the description thereof will not be repeated.

In each of the embodiments, when duplicating data on one recording medium and recording the data on the other recording medium, the data read from one recording medium and the data on the other recording medium are properly reproduced. After that, the data is recorded on the other recording medium.

In the first to fourth embodiments, the above-described predetermined rule indicates a data encoding method, and is used to copy data encoded according to a different encoding method so that the data can be reproduced by a specific reproducing apparatus. Technology is shown. In the fifth to seventh embodiments, the above-mentioned predetermined rule indicates a data recording order relation, and a technique for copying data between recording media so as to maintain a continuous data order relation when copying data. Is shown.

Hereinafter, in each embodiment, data recorded on one recording medium is read, and the read data is recorded on the other recording medium without changing the content of the data. Here, this is called a duplication record. [First Embodiment]

FIG. 1 is a block diagram schematically illustrating a configuration of a data duplication recording apparatus according to the first embodiment. Referring to FIG. 1, data replication recording apparatus 100 can be configured with a general-purpose computer such as a personal computer (hereinafter, referred to as “PC”). The data duplication recording device 100 includes a control unit 110 for controlling the entire data duplication recording device 100, a storage unit 130 for storing predetermined information, and a data duplication device. An input unit 140 for inputting predetermined information to the recording device 100; an output unit 150 for outputting predetermined information from the data duplication recording device 100; and a data duplication recording device 1 The communication unit 160, which is an interface for connecting 0 0 to the network 900, inputs information recorded on the recording medium 171, and records necessary information on the recording medium 17 1. And an external storage device 170. The control unit 110, the storage unit 130, the input unit 140, the output unit 150, the communication unit 160, and the external storage device 170 are connected via a bus. Are connected to each other.

The control unit 110 includes a CPU (Central Processing Unit) and an auxiliary circuit of the CPU, and includes a storage unit 130, an input unit 140, an output unit 150, and an external storage unit 170. And executes predetermined processing in accordance with the program stored in the storage unit 130. For example, predetermined processing is performed on data input from the input unit 140, the communication unit 160, and the external storage device 170, and the processed data is output to the output unit 150, the communication unit 160, or Output to the external storage device 170.

The storage unit 130 stores a RAM (Random Access Memory) used as a work area necessary for executing the program in the control unit 110, and a program to be executed in the control unit 110. ROM (Read Only Memory). In addition, a magnetic disk storage device such as a hard disk drive (hereinafter, referred to as “HDD (Hard Disk Drive)”) is used to assist the RAM.

The input unit 140 is an interface for inputting a signal from a keyboard, a mouse, or the like, and can input necessary information to the data duplication recording device 100.

The output unit 150 is connected to a liquid crystal display or a cathode ray tube (hereinafter referred to as “CRT (Cathode This is an interface for outputting a signal to a display such as “Ray Tube)”, and can output necessary information from the data duplication recording device 100. The communication unit 160 is a communication interface for connecting the data duplication recording device 100 to the network 900. The data duplication recording device 100 transmits and receives necessary information to and from another PC or the like via the communication unit 160.

The external storage device 170 reads a program or data recorded on the removable recording medium 171, and transmits it to the control unit 110. Further, the external storage device 170 writes necessary information to the recording medium 1711 according to an instruction from the control unit 110.

Computer-readable recording media include magnetic tapes, cassette tapes, magnetic disks such as floppy disks and hard disks, CD-ROMs (Compact Disk Read Only Memory), DVDs (Digital Versatile Disks), etc. Optical disks, magneto-optical disks such as MO (Magneto Optical disk) and MD (Mini Disc), memory cards such as IC cards and optical cards, or mask ROM, EPR OM (Erasable Programmable Read Only Memory), EEPROM (Electrically) This is a recording medium that fixedly carries a program, including a semiconductor memory such as an Erasable and Programmable Read Only Memory (FROM) and a flash ROM. Further, the recording medium can be a medium that carries the program fluidly so that the program can be downloaded from the network 900.

FIG. 2 is a functional block diagram schematically showing the functions of the data copy recording apparatus 100 according to the first embodiment. Referring to FIG. 2, the control unit 110 of the data duplication recording device 100 includes a read unit 111, an encoding method determination unit 112, an encoded data conversion unit 113, and a recording unit. Parts 1 1 and 4 are included. Further, the data duplication recording device 100 includes an external storage device 170A and an external storage device 170B as the external storage device 170. .

The external storage device 170A is controlled by the reading unit 111, reads the encoded data recorded on the recording medium 1711A, and transmits it to the reading unit 111. The recording medium 17 1 A is a recording medium from which encoded data can be read. For example, in the present embodiment, the recording medium is a memory card, but is not limited thereto, and may be a magnetic disk, an optical disk, or It may be a magneto-optical disk. Encoded data is a digital video This is encoded data of image data captured by a camera or a digital still camera. Further, the external storage device 17 OA is a device capable of reading code data recorded on the recording medium 17 1 A, and in the present embodiment, is a memory card drive.

The external storage device 170B is controlled by the recording unit 114 to write the encoded data transmitted from the recording unit 114 to the recording medium 17B. The recording medium 17 1 B is a recording medium on which encoded data can be written. For example, in the present embodiment, the recording medium is DVD-RAM, but is not limited thereto. Optical disk, magnetic disk, magneto-optical disk, or memory card. Further, the external storage device 170B is a device capable of writing encoded data to the recording medium 1711B, and in the present embodiment, is a DVD-RAM drive.

The reading unit 1 1 1 1 controls the external storage device 1 7 0 A to read the encoded data from the recording medium 1 7 1 A, and the encoding method determination unit 1 1 2 and the encoded data conversion unit 1 1 3 Output to

The coding method determining unit 112 determines whether the coding method of the coded data read by the reading unit 111 is a predetermined coding method. The predetermined encoding method is an encoding method that can be reproduced by a device that reproduces the recording medium 1711B. In the present embodiment, the predetermined coding scheme is the MPEG-2 coding scheme, but is not limited to this, and the MPEG-4 coding scheme, the H.263 coding scheme, the JPEG coding scheme are used. Alternatively, another coding method such as a non-standard coding method may be used. As described above, the predetermined encoding method is determined by the device that reproduces the recording medium 17 1 B, and data that designates the predetermined encoding method (hereinafter, referred to as encoding method designation data). The information is input in advance from 140 or the like and stored in the RAM or the like of the storage unit 130. In addition, every time the user performs an operation, the user may be caused to input the encoding method designation data.

The encoding method is determined by analyzing the header part of the encoded data. Alternatively, when the moving image data is divided into a plurality of files, and each file has a file name and an identifier, the encoding method is determined by the identifier. The coded data conversion unit 113, if the coding system of the coded data determined by the coding system determination unit 112 is not the predetermined coding system, the coding read by the reading unit 111 The data is converted into a predetermined encoding method and output to the recording unit 114. In addition, the encoded data conversion unit 113 reads the encoded data by the reading unit 111 when the encoding system of the encoded data determined by the encoding system determination unit 112 is a predetermined encoding system. The output coded data is output to the recording unit 114 as it is.

That is, in the present embodiment, when the encoding method of the encoded data read from the memory card is the MPEG-2 code method, the encoded data conversion unit 113 transmits the read code. The encoded data is output to the recording unit 114 as it is. On the other hand, when the encoding method of the encoded data read from the memory card is the MPEG-4 encoding method, the encoded data conversion unit 113 converts the read encoded data into the MPEG_2 encoding method. And output it to the recording unit 114.

It is to be noted that the encoding system designation data may be obtained from the data recorded on the recording medium 1711A in association with the encoded data without storing the encoding system designation data in advance. That is, the encoding method designation data is recorded together with the encoded data on the recording medium 17A, and the encoding method designation data is read out in advance from the recording medium 17A, and the RAM of the storage unit 130 is read out. And so on. The encoding method designation data is data for designating an encoding method for converting the associated encoded data. In this case, the coding method determination unit 112 determines whether the coding method of the coded data is the coding method specified by the coding method designation data, and determines the determination result as the coded data conversion unit. Output to 1 1 3 If the result of the determination indicates that the coding method of the coded data is not the coding method specified by the coding method designation data, the coded data conversion unit 113 may perform the coding input from the reading unit 111. Converts the data to the encoding specified by the encoding specification data.

Also, the encoding method designation data indicating the predetermined encoding method may be obtained from the data recorded on the recording medium 1711B without storing the predetermined encoding method in advance. In other words, when the recording medium 17 1 B has recorded therein encoding method designation data indicating an encoding method that can be recorded and reproduced on the recording medium 17 1 B, this encoding method designation data is recorded on the recording medium 17. 1 7 1 Read from B The same processing is performed by storing the data in the RAM of the storage unit 130 as the data. The encoding method designation data in this case indicates an encoding method that can be reproduced by the reproducing device of the recording medium 1711B.

Alternatively, the data cannot be played back on the recording medium 171B, but is an encoding method designated data indicating the encoding method specified by the user in order to record and save using the recording medium 171B. Is also good. The coding method determining unit 1 12 determines whether the coding method of the coded data is the coding method specified by the coding method designating data, and the coded data conversion unit 1 13 If the encoding system of the encoded data is not the encoding system specified by the encoding system designation data, the encoded data is converted so as to follow the encoding system specified by the encoding system designation data.

At this time, if the encoded data has already been recorded on the recording medium 17 1 B, instead of the encoding method designation data, data that designates the encoding method of the already recorded encoded data is used. It may be. In the case where the encoding method that can be recorded and played back is uniquely determined by the type of the recording medium 1711B itself, the type of the recording medium 1711B is determined to determine the recording method. It is also possible to specify an encoding method that can be reproduced and to specify the encoding method, and to store the encoding method designation data indicating the specified encoding method in the RAM or the like of the storage unit 130.

The recording unit 114 controls the external storage device 170B to record the encoded data output from the encoded data conversion unit 113 on a recording medium 17B.

FIG. 3 is a functional block diagram showing functions of the encoded data conversion unit 113 of the data duplication recording apparatus 100 according to the first embodiment. Referring to FIG. 3, coded data conversion section 113 includes switch section 115, image decoding section 116, frame memory 111, and image coding section 118. .

When the coding system of the coded data determined by the coding system determination unit 112 is the predetermined coding system, the switch unit 115 switches the switch to the bypass side and inputs from the reading unit 111. The encoded data thus output is output to the recording unit 114. Also, the switch unit 115 connects the switch to the image decoding unit 116 when the coding scheme of the code data determined by the coding scheme determination unit 112 is not a predetermined coding scheme. Side, and the encoded data input from the readout unit 1 1 1 to the image decoding unit 1 16 Output.

The image decoding unit 116 decodes the encoded data input from the switch unit 115 and stores it in the frame memory 117. That is, in the present embodiment, encoded data that is not an MPEG-2 encoding method, for example, encoded data that is an MPEG-4 encoding method, is subjected to variable-length decoding, inverse quantization, and inverse DCT (inverse DCT). Decode to frame image data by Discrete Cosine Transform, inverse discrete cosine transform, etc. The frame image data is data including a plurality of frames with each frame of the moving image as a frame.

The frame memory 117 temporarily stores the frame image data decoded by the image decoding unit 116.

The image encoding unit 118 encodes the frame image data stored in the frame memory 117 and outputs it to the recording unit 114. That is, in the present embodiment, frame image data is encoded as encoded data of the MPEG-2 encoding system by DCT, quantization, and variable-length encoding.

As described above, the switch unit 115, the image decoding unit 116, the frame memory 117, and the image encoding unit 118 included in the encoded data conversion unit 113 include a memory card by the reading unit 111. If the coded data read from the coded data is the coded data coded by the MPEG_2 coding method, the coded data read by the reading unit 111 is output to the recording unit 114 as it is. On the other hand, if the encoded data read from the memory card by the read unit 111 is encoded data encoded by the MPEG-4 encoding method, the encoded data read by the read unit 111 Is converted to the MPEG-2 encoding method and output to the recording unit 114.

FIG. 4 is a flowchart showing a flow of the encoded data conversion process executed by the data duplication recording device 100 according to the first embodiment. Referring to FIG. 4, first, in step ST11: the reading unit 111 controls the memory card drive, reads encoded data from the memory card, and stores the read encoded data in the memory card. The data is read from the drive and output to the encoding method determination unit 112 and the code data conversion unit 113.

Next, in step ST 1 2, the encoding method determination unit 1 12 performs step ST 1 It is determined whether the encoding method of the encoded data read in step 1 is the MPEG-2 encoding method. If the encoding method is not the MPEG-2 encoding method (Y es in step ST 12), in step ST 13, the encoded data read out in step ST 11 is The encoded data is converted to the MPEG-2 encoding method, and in step ST14, the encoded data converted in step ST13 is output to the recording unit 114 by the encoded data conversion unit 113, and the process proceeds to step ST16. move on. On the other hand, when the encoding method is the MPEG-2 encoding method (No in step ST12), in step ST15, the code read out in step ST11 by the encoded data conversion unit 113 in step ST15. The encoded data is output to the recording unit 114 as it is, and the process proceeds to step ST16.

Finally, in step ST16, the DVD-RAM drive is controlled by the recording unit 114, and the encoded data converted in step ST13 and output in step ST14 or output directly in step ST15 The encoded data is recorded in DV D-RAM.

Thus, when the encoding method of the encoded data read from the memory card is MPEG-2, the encoded data read is recorded as it is on the DVD-RAM. If the encoding method of the encoded data read from the memory card is other than MPEG-2, the encoding method of the read encoded data is converted to the MPEG-12 encoding method, and the — Recorded in RAM.

As described above, according to the data duplication recording apparatus 100 of the first embodiment, the encoded data recorded on the memory card is read out, and the encoding method of the read encoded data is set to the MPI format. It is determined whether or not the EG-2 coding method is used. If the determined coding method is not the MP EG-2 coding method, the read coded data is coded using the MP EG-2 coding method. The data is converted to data, and the converted encoded data is recorded on DVD-RAM. When the determined encoding method is the MPEG-2 encoding method, the read encoded data is recorded on the DVD-RAM, and when the determined encoding method is not the MPEG-2 encoding method. The converted encoded data is recorded on DVD-RAM. Therefore, the encoded data can be played back on DVD-RAM, which reproduces DVD-RAM. If the encoding method is different from the above, the encoded data read from the memory card is converted into encoded data of the MPEG-2 encoding method, and the converted encoded data is recorded on the DVD-RAM. On the other hand, if the encoded data read from the memory card is the same encoding scheme as the MPEG-2 encoding scheme that can be reproduced by a DVD-RAM-compliant playback device conforming to the DVD-VR standard, The encoded data read from the DVD-RAM is directly recorded on the DVD-RAM. As a result, moving image data encoded and recorded by different encoding methods can be copied so as to be reproducible by a specific reproducing device. Further, when the conversion is not necessary, the read coded data is recorded as it is, so that the deterioration of the moving image data due to decoding and re-encoding can be suppressed.

In the first embodiment, a data duplication recording method for executing the processing shown in FIG. 4 by a computer, a data duplication recording program for causing a computer to execute this method, and a data duplication recording program The invention can be regarded as a computer-readable recording medium on which is recorded.

[Second embodiment]

The data duplication recording device 10 OA in the second embodiment determines whether the configuration of the data duplication recording device 100 according to the first embodiment allows the conversion of the encoding system to flow the encoded data. It has a configuration in which a switch unit 115A for switching between is added. The configuration other than the switch unit 115A is the same as that of the data duplication recording apparatus 100 in the first embodiment, and therefore, the switch unit 115A will be mainly described here.

FIG. 5 is a functional block diagram schematically showing functions of the data duplication recording apparatus 10 OA according to the second embodiment. Referring to FIG. 5, the control unit 11 OA of the data duplication recording device 10 OA includes a read unit 111 A, a switch unit 115 A, an encoding method determination unit 112, and an encoded data conversion unit 1 13 and a recording unit 114A. Further, the data duplication recording device 100A includes, as the external storage device 170, an external storage device 170A and an external storage device 17OB.

The encoding method determination unit 112, the encoded data conversion unit 113, the external storage device 17OA, and the external storage device 170B are the same as those described in FIG. Therefore, the description will not be repeated.

The reading unit 111A controls the external storage device 17OA to read the encoded data read from the recording medium 1711A, and outputs it to the switch unit 115A.

The switch section 115A has an input side connected to the readout section 111A, and one of the two output sides is connected to the encoding scheme determination section 112 and the encoded data conversion section 113. The other is connected to the recording unit 114A.

Further, external input data input from the input unit 140 by the user is provided to the switch unit 115A. When the external input data is data that permits the conversion of the encoding method, the switch unit 115A sets the output side to the encoding method determination unit 112 and the encoded data conversion unit 113. Switch to the side to connect to. Then, switch section 115A outputs the encoded data read by reading section 111A to encoding scheme determining section 112 and encoded data converting section 113.

On the other hand, the switch unit 115A switches the output side to the side connected to the recording unit 114A when the external input data is not data that permits conversion of the encoding method of the encoded data. Then, the switch unit 115A records the encoded data read by the read unit 111A by bypassing the encoding method determination unit 112 and the encoded data conversion unit 113. Output to section 1 '1 4 A.

Therefore, since external input data reflecting the user's intention is given to the switch unit 115A, the user can specify whether or not to perform conversion. The switch unit 115A is provided at a stage preceding the encoded data conversion unit 113. Therefore, when the conversion is not necessary, the read coded data can be recorded as it is, so that the deterioration of the moving image data due to the decoding and re-encoding in the coded data converter 113 can be suppressed. Can be.

It should be noted that the switch section 115A may be provided with additional data stored together with the encoded data in the recording medium 171A instead of the external input data input from the input section 140. Good. The additional data is, for example, a flag indicating whether or not conversion is permitted.If the flag is "1", the conversion is permitted.If the flag is "0", the conversion is not permitted. Show. That is, when the additional data is data that permits the conversion of the encoding method, the switch unit 115A switches the output side. Switch to the side connected to the encoding method determination unit 112 and the encoded data conversion unit 113, and if the additional data is not data that permits the conversion of the encoding method of the encoded data, the recording unit 114 Switch to the side connected to A.

The recording unit 114A controls the external storage device 170B to store the encoded data output from the encoded data conversion unit 113A or the encoded data output from the switch unit 115A. Record on recording medium 171B.

FIG. 6 is a flowchart showing a flow of encoded data conversion processing executed by the data duplication recording apparatus 10 OA in the second embodiment. Referring to FIG. 6, first, in step ST21, the reading unit 111A controls the memory card drive, reads the encoded data from the memory card, and reads the read encoded data from the memory card. It is read from the drive and output to the switch section 115A.

Next, if the external input data input from the input unit 140 is data indicating that the conversion of the encoding method is permitted (Yes in step ST22), the switch unit 115A outputs a code Is switched to the side connected to the encoding scheme determination section 112 and the encoded data conversion section 113, and the encoded data read in step ST21 is converted to the encoding scheme determination section 112 and the code It is output to the converted data conversion unit 113. After that, it proceeds to step ST23.

On the other hand, if the external input data input from the input unit 140 is data indicating that conversion of the encoding method of the encoded data read in step ST21 is not permitted (No in step ST22), the switch unit The output side is switched to the side connected to the recording section 114 A by 1 15 A, and the encoded data read out in step ST21 The encoding scheme determination section 1 12 and the encoded data conversion section 1 13 Is bypassed and output to the recording unit 114A. After that, it proceeds to step ST26. In step ST23, the coding method determining unit 112 determines whether the coding method of the coded data read in step ST21 is the MPEG-2 coding method. If the encoding method is not the MPEG-2 encoding method (Yes in step ST23), in step ST24, the encoded data read out in step ST21 by the encoded data conversion unit 113 in step ST24. Is converted to the MPEG-2 encoding method, and in step ST25, the encoded data is converted by the encoded data conversion unit 113 in step ST24. The converted encoded data is output to the recording unit 114A.

On the other hand, if the encoding method is the MPEG-2 encoding method (No in step ST23), the process proceeds to step ST26.

In step ST26, the switch section 115A or the encoded data conversion section 113 outputs the encoded data read out in step ST11 to the recording section 114A as it is.

Finally, in step ST27, the DVD-RAM drive is controlled by the recording unit 114A, and the encoded data output in step ST25 or the encoded data output directly in step ST26 is output. DVD—Recorded on RAM. Thus, if the given external input data is data indicating that the conversion of the encoding method is not permitted, the read encoded data is recorded as it is on the DVD_RAM. Also, the given external input data is data indicating that the conversion of the encoding method is permitted. If the encoding method of the encoded data read from the memory card is MPEG-2, the data is read. The encoded data is directly recorded on DVD-RAM. Further, if the given external input data is data indicating that the conversion of the encoding method is permitted, and the encoding method of the encoded data read from the memory card is other than MPEG-2, The encoding method of the read encoded data is converted to the MPEG-2 encoding method and recorded on the DVD-RAM.

As described above, the data duplication recording apparatus 10 OA according to the second embodiment includes the switch section 115A for switching whether to convert the encoded data read from the memory card. When prohibiting re-encoding during system conversion or avoiding degradation of moving image data due to re-encoding, do not convert encoded data read from the memory card from external input data according to the user's will. You can do so.

In the second embodiment, a data duplication recording method for executing the processing shown in FIG. 6 by a computer, a data duplication recording program for causing a computer to execute this method, and a data duplication recording program The invention can be regarded as a recording medium readable by a recorded computer. [Third Embodiment]

The data duplication recording apparatus 10 OB in the third embodiment determines the encoding method for the encoded data read from the recording medium 17 A, and determines whether conversion is necessary or unnecessary. Regardless, the read encoded data is recorded on the recording medium 17 1 B.

FIG. 7 is a function block diagram schematically showing the functions of the data duplication recording apparatus 1 OOB in the third embodiment. Referring to FIG. 7, the control section 110B of the data duplication recording apparatus 100B includes a read section 111B, an encoding scheme determination section 112, and an encoded data conversion section 111. 3A and a recording section 1 1 1 4B. Further, the data duplication recording device 100 B includes an external storage device 170 A and an external storage device 170 OB as the external storage device 170.

Encoding method determination section 112, external storage device 170A, and external storage device 170B are the same as those described in FIG. 2, respectively, and thus description thereof will not be repeated. The reading unit 1 1 1 B controls the external storage device 17 OA to read the encoded data from the recording medium 17 1 A, and uses the read encoded data as the encoding method determining unit 1 12 and the encoded data. Output to the conversion section 113A and the recording section 114B.

The encoded data converter 1 13 A outputs the read section 1 1 1 B if the encoding scheme of the encoded data determined by the encoding scheme determiner 1 12 is not the predetermined encoding scheme. The input encoded data is converted so as to conform to a predetermined encoding method, and the converted encoded data is output to the recording unit 114B. Also, the coded data conversion unit 113A does not output anything if the coded data of the coded data determined by the coding system determination unit 112 is a predetermined coding system.

The storage unit 114B controls the external storage device 170B to control the encoded data converted by the encoded data conversion unit 113A and the code read by the read unit 111B. The encoded data is recorded on the recording medium 17 1 B.

FIG. 8 is a functional block diagram showing functions of the encoded data conversion unit 113A of the data duplication recording device 100B according to the third embodiment. Referring to FIG. 8, encoded data conversion section 113A includes switch section 115B, image decoding section 116, frame memory 117, and image encoding section 118. Including. Image decoding unit 1 1 6, frame Memory 117 and image encoding section 118 are the same as those described with reference to FIG. 3, and thus description thereof will not be repeated.

The switch unit 115B selects one of the two output sides as an output destination of the encoded data input from the read unit 111B. An image decoding unit 116 is connected to one of the two output sides, and nothing is connected to the other. When the determination result provided by the coding method determining unit 112 indicates that the coding method of the coded data is the predetermined coding method, the switch unit 115B switches the output side to the side to which nothing is connected. Switch, output nothing. On the other hand, if the result of the determination provided by the coding system determination unit 112 indicates that the coding system of the coded data is not the predetermined coding system, the switch unit 115B switches the output side to the image decoding unit 116. Is switched to the connection side, and the encoded data input from the reading unit 111B is output to the image decoding unit 116.

As described above, the coded data conversion unit 113A performs the processing when the coded data read from the memory card by the reading unit 111B is coded data coded by the MPEG-2 coding method. Produces no output. On the other hand, if the encoded data read from the memory card by the reading unit 111 B is encoded data encoded by the MPEG_4 encoding method, the read encoded data is Convert to EG-2 encoding and output to record 114B.

FIG. 9 is a flowchart showing the flow of encoded data conversion processing executed by the data duplication recording apparatus 100 according to the third embodiment. Referring to FIG. 9, first, in step ST31, the memory card drive is controlled by the reading unit 111B, and the encoded data is read from the memory card, and the read encoded data is encoded. The data is output to the system determination unit 112 and the encoded data conversion unit 113A. Next, in step ST32, the encoding scheme determination unit 112 determines whether the encoding scheme of the encoded data read in step ST31 is the MPEG-2 encoding scheme. You. If the encoding method is not the MPEG-2 encoding method (Yes in step ST 3.2), in steps ST 33 and ST 34, the encoding read out in step ST31 by the encoded data converter 1 13 A in steps ST 33 and ST 34 The data is converted to the MPEG-2 coding method, and then the converted coded data is output to the recording unit 114B. The process proceeds to Step ST35. On the other hand, if the encoding method is the MPEG-2 encoding method (No in step ST32), the process proceeds to step ST35.

In step ST35, the encoded data read in step ST31 is output to the recording unit 114B by the reading unit 111B. Then, in step ST36, the DVD-RAM drive is controlled by the recording unit 114B, and the encoded data output in step ST34 and the encoded data output in step ST35 are recorded in the DVD-RAM. Is done.

Note that the processing of step ST35 may be performed before the encoded data conversion processing performed in steps ST32 to ST34, and may be performed in parallel with the encoded data conversion processing in steps ST32 to ST34. Can also.

Thus, when the encoding method of the encoded data read from the memory card is MPEG-2, the read encoded data is recorded as it is on the DVD-RAM. If the encoding method of the encoded data read from the memory card is other than MPEG-2, the encoding method of the encoded data read is converted to the MPEG-12 encoding method, and the conversion is performed. The read encoded data is recorded on the DVD-RAM, and the read encoded data is recorded on the DVD-RAM as it is.

Also, when recording a file of encoded data of an encoding method other than MPEG-12 together with a file of encoded data of the MPEG-2 encoding method on a DVD-RAM, the respective encoded data must be the same. It is preferable to record the file name with a different extension. In addition, a plurality of encoded data of encoding methods other than MPEG-2 are converted into one encoded data of MPEG-2 encoding method, and a file of encoding method other than MPEG-2 is converted. When recording multiple encoded data, multiple encoded data of encoding methods other than MPEG-2 are recorded at any position in the converted encoded data file of MPEG-2 encoding method. It is preferable to store the location information (time, packet number, etc.) indicating the presence or absence.

As described above, according to the data duplication recording apparatus 100B in the third embodiment, if the determined encoding method is not the MPEG-2 encoding method, it is converted to the MPEG-2 encoding method. Read encoded data along with the encoded data Is recorded on DVD—RAM. In other words, if the read coded data is in an encoding system different from the MPEG-2 encoding system that can be played back by a DVD-VR standard compliant playback device that plays back DV D-RAM, the data is read from the memory card. The converted encoded data is converted into encoded data of the MPEG-2 encoding method, and the encoded data read out is recorded as it is on the DVD-RAM together with the converted encoded data. As a result, in a reproducing apparatus in which the reproducible encoding method is restricted, the encoded data of the MPEG_2 encoding method recorded on the recording medium can be reproduced, and the reproducible encoding method can be used. In an unconstrained environment, coded data without degradation due to re-encoding can be reproduced.

In the third embodiment, a data duplication recording method for executing the processing shown in FIG. 9 by a computer, a data duplication recording program for causing a computer to execute this method, and a data duplication recording program The invention can be regarded as a computer-readable recording medium on which is recorded.

[Fourth embodiment]

The data duplication recording device 100C according to the fourth embodiment differs from the data duplication recording device 10 OB according to the third embodiment in that the configuration of the data duplication recording device 10OB changes the flow of encoded data depending on whether or not to allow conversion of the encoding method. It has a configuration in which a switch section 115C for switching is attached.

FIG. 10 is a functional block diagram illustrating an outline of functions of a data duplication recording apparatus 100C according to the fourth embodiment. Referring to FIG. 10, control section 110C of data duplication recording apparatus 100C includes a reading section 111C, a switch section 115C, an encoding method determining section 112, and an encoded data conversion section. Unit 113A and a recording unit 114C. Further, the data duplication recording device 100C includes, as the external storage device 170, an external storage device 17OA and an external storage device 170B.

Encoding method determination section 112, external storage device 170A, and external storage device 17OB are the same as those described with reference to FIG. 2, and therefore description thereof will not be repeated. Encoded data conversion section 113A is the same as that described with reference to FIG. 7, and thus description thereof will not be repeated.

The reading unit 111C controls the external storage device 17OA to read from the recording medium 171A. The encoded data is read out and output to the switch unit 115C and the recording unit 114C.

The switch section 115C has an input side connected to the readout section 111C, and one of the two output sides is connected to the encoding scheme determination section 112 and the encoded data conversion section 113A. Connected, the other is not connected anywhere.

When external input data input from the input unit 140 by the user's intention is data that permits encoding system conversion, the switch unit 115C switches the output side to the encoding system judging unit 112 and Switch to the side connected to the coded data converter 113A. Then, switch section 115C outputs the encoded data read by reading section 111C to encoding scheme determining section 112 and encoded data converting section 113A.

On the other hand, if the external input data input from input section 140 is not data that permits the conversion of the encoding scheme of the encoded data read by reading section 111A, switch section 115C outputs Switch the side to the side that is not connected anywhere, and output nothing. '

The recording unit 114C controls the external storage device 170B to store the encoded data output from the encoded data conversion unit 113A and the encoded data output from the read unit 111C. Record on recording medium 1 71B.

FIG. 11 is a flowchart showing the flow of the coded data conversion processing executed by the data duplication recording apparatus 1 OC in the fourth embodiment. Referring to FIG. 11, first, in step ST41, the reading unit 111C controls the memory card drive and reads encoded data from the memory card. The read encoded data is output to the switch unit 115C via the memory card drive.

Next, when the external input data input from the input unit 140 indicates that the conversion of the encoding system is permitted (Yes in step ST42), the switch unit 115C causes the output side to output the encoding system determination unit. 1 12 and the coded data conversion unit 1 13 are switched to the side to connect A, and the coded data read out in step ST41 is encoded by the coding method determination unit 1 12 and the coded data conversion unit 1 13 Output to A. Thereafter, the process proceeds to step ST43. On the other hand, if the external input data input from input section 140 does not indicate that the conversion of the encoding method is permitted (No in step ST42), switch section 115C has no output side connected. Switch to the non-existent side and output nothing. Thereafter, the process proceeds to step ST46.

In step ST43, the coding method determining unit 112 determines whether or not the coding method of the coded data read in step ST41 is the MPEG-2 coding method. If the encoding method is not the MPEG-2 encoding method (Yes in Step ST43), in Steps ST44 and ST45, the encoded data read out in Step ST41 by the encoded data conversion unit 113A is converted to MPEG in Steps ST44 and ST45. — The data is converted to the two-encoding method, and the converted coded data is output to the recording unit 114C. On the other hand, when the encoding method is the MPEG-2 encoding method (No in step ST43), the process proceeds to step ST46. In step ST46, the code data read out in step ST41 is output to the recording unit 114C by the reading unit 111C.

The process in step ST46 may be performed before the coded data conversion process performed in steps ST42 to ST45, or may be performed in parallel with the coded data conversion process in steps ST42 to ST45.

Finally, in step ST47, the encoded data output in step ST45 and the encoded data output in step ST46 are recorded in the DVD-RAM by the recording unit 114C via the DVD-RAM drive. Will be recorded.

Thus, if the given external input data is data indicating that the conversion of the encoding method of the read encoded data is not permitted, the read encoded data is directly stored in the DVD-RAM. Be recorded. Also, this data indicates that conversion of the given external input data and encoding method is permitted. If the encoding method of the encoded data read from the memory card is MPEG-2, it is read. The encoded data is directly recorded on DVD-RAM. Further, if the given external input data is data indicating that the conversion of the encoding method is permitted, and the encoding method of the encoded data read from the memory card is other than MPEG-2, The read encoded data is converted so as to conform to the MPEG-2 encoding method, and the converted encoded data is recorded on the DVD-RAM and read out. The encoded data is also recorded on DVD-RAM.

As described above, according to the data duplication recording apparatus 100 C in the fourth embodiment, it is determined whether or not encoded data read from a memory card is to be converted by given external input data. Can be switched. In addition, given external input data is data indicating that the conversion of the coding system of the read coded data is permitted. If the determined coding system is not the MPEG-2 coding system, the MPEG-2 The read encoded data is recorded on the DVD-RAM together with the encoded data converted according to the encoding method. For this reason, if it is desired to prohibit re-encoding during conversion of the encoding method or to avoid deterioration of moving image data due to re-encoding, do not convert the encoded data read from the memory card. Can be. If the read encoded data is in a different encoding format from the MPEG-2 encoding format that can be played back by a DVD-VR standard playback device that plays DVD_RAM, it is read from the memory card. The encoded data obtained is converted into encoded data according to the MPEG-2 encoding method, and the read encoded data can be recorded on the DVD-RAM together with the converted encoded data.

In the fourth embodiment, a data duplication recording method for executing the processing shown in FIG. 11 by a computer, a data duplication recording program for causing a computer to execute this method, and a data duplication recording program The invention can be regarded as a computer-readable recording medium on which is recorded.

(Fifth embodiment)

The fifth embodiment will be described in detail with reference to FIGS.

FIG. 12 is a functional block diagram showing a schematic configuration of the data duplication recording apparatus according to the present embodiment. Referring to FIG. 12, a data duplication recording apparatus according to the fifth embodiment includes a management information reading unit 101, a sorting determination unit 102, a sorting execution unit 103, and a data writing unit 10. 4. It has a management information generation unit 105 and a management information writing unit 106. In the data duplication recording apparatus of the present embodiment, digital data recorded on the recording medium 1 is duplicated and recorded on a recording medium 2 different from the recording medium 1. At this time, management information 500 corresponding to the data copied and recorded on the recording medium 2 is generated based on the management information 300 of the recording medium 1 and recorded on the recording medium 2. I do.

The management information reading unit 101 reads the management information 300 recorded on the recording medium 1, and sorts the read management information 300 into a rearrangement determination unit 102 and a management information generation unit 105. Output to

The rearrangement determination unit 102 determines whether to rearrange the data based on the management information 300 received from the management information reading unit 101. The result of the determination is output to the sorting execution unit 103 as sorting instruction information 200.

The rearrangement execution unit 103 reads data from the recording medium 1 in accordance with the rearrangement instruction information 200 input from the rearrangement determination unit 102, and reads the data when rearrangement is instructed. Perform a sort on If the rearrangement is not instructed, the read data is not rearranged.

The operations of the rearrangement determination unit 102 and the rearrangement execution unit 103 will be described in more detail with reference to FIGS. 13 to 16.

When determining whether or not to rearrange the data, the rearrangement determination unit 102 determines the minimum length value of the recording area that is to be continuously recorded by the recording data and that is specified by the recording medium 2 and that is to be satisfied. refer. As described above, this refers to, for example, the minimum data length to be satisfied by CDA in the DVD-VR standard. Hereinafter, for the sake of simplicity, the minimum length of a continuously recorded recording area is referred to as minCDA, and a condition indicating that the recording data must satisfy the minimum length minCDA is referred to as a CDA condition.

The rearrangement determination unit 102 determines whether the data recorded on the recording medium 1 satisfies the CDA condition of the recording medium 2 based on the management information read by the management information reading unit 101. You. If it satisfies, it instructs the rearrangement execution unit 103 not to rearrange the data, and as a result, the data on the recording medium 1 is copied and recorded on the recording medium 2 as it is. Conversely, if the CDA condition is not satisfied, the reordering unit 103 is instructed to reorder the data, and the reordered data is copied and recorded on the recording medium 2. Become. Examples of specific processing are shown in Figs.

FIG. 13 shows the structure of sectors T 1 to T 16 of the recording medium 1 used in the present embodiment. The structure and sector data A, Β, ·, ている recorded in each sector are shown, and FIG. 14 shows management information 300. The management information 300 is a series of elements indicating each sector of the recording medium 1, and the order of the elements in the series indicates the order relation of the sector data recorded in each sector.

FIGS. 15 and 16 show processing performed by rearrangement determination section 102 in the present embodiment. First, the rearrangement judgment unit 102 converts the management information 300 of the data recorded on the recording medium 1 into a data length L en (≥min CDA) that satisfies a predetermined CD condition of the recording medium 2. Divided into a plurality of pieces of partial management information 30 i (1 = 1, 2, 3,...) Corresponding to the number of sectors per minute. FIG. 15 shows the partial management information 301 and 302. Here, the data length L en is four sectors long.

Then, the reordering determination unit 102 determines, for each of the divided pieces of the partial management information 30 i, whether the sectors pointed to by the partial management information 30 i are physically continuous. That is, it is determined whether or not the recorded sector data is recorded in physically continuous sectors.

If the result of the determination is that the sector pointed to by the partial management information 30 i is continuous, the sector data is already continuous, so the data is copied and recorded from recording medium 1 to recording medium 2 as it is. The rearrangement instruction information 200 does not indicate the rearrangement. On the other hand, when the sectors pointed to by the partial management information 30 i are not continuous, the rearrangement instruction information 200 including the partial management information 30 i instructs the rearrangement of the sector data. In FIG. 15, there is partial management information 310 as partial management information 30 i for which sorting is not instructed, and partial management information 302 as partial management information 30 i for which sorting is instructed.

The rearrangement execution unit 103 executes rearrangement of the read data based on the rearrangement instruction information 200 output from the rearrangement determination unit 102 in this way. FIG. 16 shows an example of data 401 and 402 recorded on the recording medium 2 after the rearrangement is performed by the rearrangement determination unit 102 and the rearrangement execution unit 103. In the present embodiment, when the rearrangement execution unit 103 reads data from the recording medium 1, the data is rearranged by controlling the process of reading the sector data based on the rearrangement instruction information 200. Perform Specifically, in the case where rearrangement is not instructed by the rearrangement instruction information 200 with respect to certain partial management information 300 i (in the case of partial management information 301), the partial management information 30 i From the corresponding sector on the recording medium 1 indicated at the beginning of the data, the data of the length corresponding to the data length Len recorded in the continuous sector is read, and the read data is sent to the data writing unit 104. Is given and recorded on the recording medium 2. In this case, data 401 is recorded. In FIG. 16, data that is given to the data writing unit 104 in one reading and recorded on the recording medium 2 is indicated by a thick line. Data 401 indicates that the continuous sector data A, B, C, and D on the recording medium 1 shown in FIG. 13 are read and written at once as they are.

On the other hand, when the rearrangement is instructed by the rearrangement instruction information 200 (in the case of the partial management information 302), the record indicated by the partial management information 300i according to the partial management information 300i. The sector data in the sectors on the medium 1 are sequentially read, and the read data is provided to the data writing unit 104 and recorded on the recording medium 2. In this case, data 402 is recorded. In the data 402, the sector data E, F, G, and H on the recording medium 1 shown in FIG. 13 are separately read and written, so that each sector data is shown by a thick line.

The data writing unit 104 records data satisfying the CDA condition of the recording medium 2 obtained by the rearrangement execution unit 103 in a continuous recording area on the recording medium 2. At this time, if the sector size is different between the recording media 1 and the recording medium 2, the data writing unit 104 converts the data input from the rearrangement execution unit 103 according to the sector size of the recording medium 2. Execute the adjustment process.

Specifically, for example, after linking the data input from the reordering execution unit 103, the data is re-divided based on the sector size of the recording medium 2, the size is adjusted, and the data is stored in each sector of the recording medium 2. . In addition, assuming that the sector size of recording medium 1 is M and the sector size of recording medium 2 is N, if M <N, considerable dummy data is added to the shortage and the sector data of recording medium 1 is added. After adjusting to the sector size of recording medium 2, it can be stored in the sector of recording medium 2. If M> N, one sector data of the recording medium 1 is divided into a plurality of data, and one or both of the divided data is divided according to the sector size of the recording medium 2. Data may be added and stored in each of a plurality of sectors of the recording medium 2. Here, the dummy data is used to match the data with the sector size, but a method of indicating the length of the effective data area in the sector by the management information may be used. Instead of the management information, information indicating the effective data area length may be written in the sector. In the method of indicating the effective data area length compared to the method using dummy data, the area other than the effective data can be skipped quickly by knowing the effective data area length when reading data. The required processing time can be omitted.

By the above processing, the data writing unit 104 outputs additional processing information 201 indicating additional processing when data is written to the recording medium 2, such as whether or not rearrangement is performed and whether or not adjustment processing is performed. To the management information generating unit 105.

The management information generation unit 105 generates management information 500 for managing the information on the recorded data recorded on the recording medium 2 with respect to the data recorded on the recording medium 2 as described above. And outputs it to the management information writing unit 106. The format of the generated management information 500 corresponds to the file system specified by the recording medium 2. The management information 500 is generated based on the management information 300 in the recording medium 1 input from the management information reading unit 101 and the additional processing information 201 input from the data writing unit 1Q4. Is done.

The management information writing unit 106 receives the management information 500 corresponding to the recording data of the recording medium 2 generated by the management information generation unit 105, and records it on the recording medium 2. As described above, when copying data from the recording medium 1 to the recording medium 2, the rearrangement determination unit 102 determines whether the data of the recording medium 1 is physically continuously recorded. Then, on the basis of the determination result, the rearrangement execution unit 103 and the data writing unit 104 rearrange the data read from the recording medium 1 as necessary, and Duplicate and record so as to satisfy the CDA requirements of 2. This ensures that the data copied and recorded on the recording medium 2 can be reproduced without interruption.

The data duplication recording method according to the present embodiment will be described with reference to the flowcharts of FIG. 17 and FIG. First, the management information reading unit 101 reads the management information 300 from the recording medium 1 (step S (hereinafter, simply abbreviated as S) 1), and divides the read management information 300 for each data length Len. Then, the divided partial management information 30i is obtained and given to the rearrangement determination unit 102 (S2).

Next, the reordering determination unit 102 determines whether the sector indicated by the given pieces of partial management information 30i is a physically continuous sector (S3). If it is a continuous sector, the rearrangement unit 103 outputs the rearrangement instruction information 200 (instruction not to rearrange) and specifies the reading start position on the recording medium 1 (S4). The execution unit 103 reads the data having the data length Len from the specified reading start position (S5). On the other hand, if the sectors are not consecutive, the rearrangement determination unit 102 outputs the rearrangement instruction information 200 to the rearrangement execution unit 103 to instruct to rearrange the sector data shown in FIG. (S6).

Step S6 will be described in detail with reference to FIG. The rearrangement of the sector data by the rearrangement execution unit 103 is based on the partial management information 30 i included in the rearrangement instruction information 200, and sequentially reads the sector data indicated by the partial management information 30 i from the recording medium 1. It is done by inserting. The reading start position on the recording medium 1 indicated by each sector information in the partial management information 30i included in the sorting instruction information 200 is designated (Sll), and one sector data is read (S12). Is repeated until the data length reaches the data length Len (S13).

Both the data thus rearranged and the data not rearranged are written to the recording medium 2 by the data writing unit 104, and the corresponding management information is generated by the management information generation unit 105 (S 7) The management information generated here is temporary, and the final management information is formed when it is written to the recording medium 2.s After that, it is determined whether the reading of the partial management information 30i is completed. That is, it is determined whether it is the last end of the management information 300 read from the recording medium 1 (S8). If it is determined that it is not the last end, the process returns to S2. Yes (S9).

In this embodiment, the minimum data length min C that satisfies the CDA condition of the recording medium 2 Assuming that DA is the same as or shorter than the length of the sector of the recording medium 1, the length of the partial management information 30 i for determining whether or not to perform reordering by the reordering determination unit 102 is equal to the length of the recording medium. Since one sector is equivalent to one, data rearrangement is practically unnecessary, and the rearrangement is always determined to be “none”. Therefore, the data is copied and recorded in the original sector order. That is, in this case, no rearrangement is performed, and the same duplicate recording as that of the conventional technique is performed.

Conversely, if the minimum data length min CDA that satisfies the CDA condition of recording medium 2 is assumed to be the entire recording area length of recording medium 1, all data recorded on recording medium 1 will be continuously recorded. It is determined that the data will not be sorted only if In other cases, the sector data is always read out and recorded on the recording medium 2 in order based on the management information 300. This latter process is a sequential dubbing process in which video data is read out in the order of reproduction or while the video is being reproduced, the data is written to another medium in that order. That is, the data reading unit (reordering execution unit 103) reads the sector data from the recording medium 1 in the logical data order and performs Z reproduction, and the data writing unit 104 sequentially reads and reproduces the data. It is an operation of recording on the recording medium 2.

If the above-mentioned minimum data length min CDA is equal to or shorter than the sector length of the recording medium 1, or if the minimum data length min CDA is the entire recording area length of the recording medium 1, the special data in this embodiment is It is an example showing the form.

By the way, in the present embodiment, the management information 300 corresponding to the data of the recording medium 1 is divided in advance into a fixed data length Len that satisfies the CDA condition of the recording medium 2, and is divided into partial management information 30. Although the corresponding continuous data is obtained as i, the sorting method that satisfies the CDA condition is not limited to this.

(Other data sorting methods)

FIGS. 19 and 20 show another example of realizing the data rearrangement process in the present embodiment. The sector data and management information 300 of the target recording medium 1 use those shown in FIGS. 13 and 14. FIG. 19 shows the partial management information 60 i (i = l, 2,...) Of the management information 300. FIG. 20 shows the recording on the recording medium 2 according to the partial management information 60 i. Data 70 0 = 2,...). In this example, when the management information 300 corresponding to the recording data of the recording medium 1 is read up to the data length Len that satisfies the CDA condition, the sector up to that is continuous, and the following sector is further continuous. In such a case, the management information for the sector up to the end of the continuation is read, and this is set as partial management information 601. The next partial management information 6002 starts from the place where the continuation is interrupted. When reading data from the recording medium 1, if the sector indicated by the partial management information 60 i is a continuous sector such as the partial management information 60 1 and 60 3, the corresponding length on the recording medium 1 is used. The data 701 and 703, which are the sector data recorded in the continuous sectors, are read and recorded on the recording medium 2. If it is not continuous as in the partial management information 602, each sector data in the sector on the recording medium 1 is sequentially read in accordance with the partial management information 60i, and is recorded on the recording medium 2 as data 702. I do.

In FIG. 20, as in FIG. 16, data read from the recording medium 1 in one reading operation and written to the recording medium 2 is indicated by a thick line. Since the CDA condition specifies only the minimum data length min CDA of continuously recorded data, it is possible to copy and record data satisfying the CDA condition also by such a method.

(Still other data sorting methods)

FIGS. 21 and 22 show still another example of the data rearrangement process according to the present embodiment. In this example, after dividing the management information 300 with the fixed length, which has already been described, adjustment is performed to correct the combination to the optimum combination of the partial management information 300i.

When the management information 30 OA in FIG. 21 is divided into fixed-length OAs to obtain the partial management information 80 i, the partial management information 80 1, the partial management information 80 2 and the Both of the partial management information 803 include discontinuous portions, that is, partial management information that requires sorting. On the other hand, in FIG. 22, as shown in the figure, the two pieces of partial management information 90 2 and 90 3 in the latter half do not include discontinuous points by performing the adjustment processing, that is, the rearrangement is required. Corrected to the partial management information that does not. In the adjustment processing, the partial management information 8 0 1, 8 0 2 and 8 0 are extended by extending the partial management information 8 0 1 by one sector and shifting the boundaries of the subsequent partial management information 8 0 2 and 8 0 3. 3 is changed to partial management information 901, 902, and 903 that do not include discontinuous points, that is, partial management information 902, 903 that does not require sorting. I have. In the adjustment process, the division position is corrected so that the ratio of the partial management information 300 i that does not need to be rearranged to the original management information 300 becomes maximum. The more partial management information that is not rearranged, the more data read processing can be reduced. Such an adjustment process is performed by dividing the management information 30 i once divided by the rearrangement determination unit 102 into several division positions of the management information 30 i inside the rearrangement determination unit 102. It may be performed by automatically finding the optimal division position where the continuity of the sector is maximized by shifting the position, or the management information 30 i once divided by the rearrangement determination unit 102 may be sent to a monitor (not shown). It can also be output by the user and manually adjusting the division position by the user.

(Sixth embodiment)

Next, a sixth embodiment of the present invention will be described with reference to FIGS. FIG. 23 is a schematic configuration diagram of a data duplication recording apparatus according to the sixth embodiment of the present invention. The difference between the data duplication recording device of FIG. 23 and the data duplication recording device of FIG. 12 is that, in the configuration of FIG. 23, instead of the rearrangement execution unit 103 of FIG. Data readout unit 1001, a rearrangement execution unit 1002, and a temporary recording area 1003. The other parts in FIG. 23 are the same as those shown in FIG. 12, so the same numbers are assigned and their detailed description is omitted.

The data reading unit 1001 of the present embodiment reads each sector data recorded on the recording medium 1 in the order of sectors, and outputs the read data to the rearrangement execution unit 1002. The rearrangement execution unit 1002 performs a process on each sector data output from the data readout unit 1001, based on the rearrangement instruction information 200 given from the rearrangement determination unit 102. Perform the processing described below.

The rearrangement instruction information 200 output from the rearrangement determination section 102 is obtained in the same manner as in the fifth embodiment. However, in the fifth embodiment, the rearrangement execution unit 103 reads sector data from the recording medium 1 in synchronization with the input of the rearrangement instruction information 200. In the embodiment, the input of the sorting instruction information 200 and the reading of the sector data from the recording medium 1 are not the same. It is performed during the period.

For this reason, the rearrangement execution unit 1002 temporarily records the partial management information 300i determined to be rearranged as indicated by the rearrangement instruction information 200 input from the rearrangement determination unit 102. Registered and held in the area 1003, and registered in the temporary recording area 1003 as to whether or not each sector data read by the data reading unit 1001 in the sector order is included in the data to be rearranged. It is determined by collating with the obtained partial management information 30 i. As a result of the determination, if the read sector data is included in the data that does not need to be rearranged, the read data is output to the data writing unit 104 as it is, and is included in the data to be rearranged. For example, it is temporarily recorded in the temporary recording area 1003.

The sector data temporarily recorded in the temporary recording area 1003 is rearranged and then output to the data writing unit 1◦4. The sorting of the data temporarily recorded in the temporary recording area 1003 and the timing of the data output (writing to the recording medium 2) may be performed at the time when reading of all the data from the recording medium 1 is completed. It may be at any time during reading. At an arbitrary point during reading, an interrupt is performed and processing is performed. However, when writing the rearranged data to recording media 2 by performing an interrupt, make sure that the interrupt is performed at the data write break position that satisfies the CDA condition so as not to break the continuity of the data being written. To

24 to 26 show a procedure according to the data duplication recording method according to the present embodiment. The procedure according to the data duplication recording method will be described with reference to FIGS. The procedure is to read and process the management information 300 (Fig. 24), read and process the sector data of the recording medium 1 (Fig. 25), and temporarily store it in the temporary recording area 1003. Steps for rearranging the recorded sector data and executing duplicate recording on the recording medium 2 (Fig. 26) are shown separately. However, such a stepwise step configuration is not always necessary, and the method for implementing the present embodiment is not limited to this. For example, as already indicated, the write operation to the sort and recording Meda ^second temporary recording sector data shown in FIG. 2 6, during the reading step of the sector data shown in FIG. 2 5 Interrupts can also be processed. In the step of FIG. 24, first, the management information reading unit 101 reads the management information 300 from the recording medium 1 from the beginning (S 21), and the rearrangement determination unit 102 reads The management information 300 is divided for each data length Len, and the divided partial management information 300 i is sequentially read (S 22). Also, the read management information 300 is output from the management information reading unit 101 to the management information generating unit 105.

Next, the rearrangement determination unit 102 determines whether the sector indicated by each piece of partial management information 300 i is a physically continuous sector, and rearranges the rearrangement instruction information 200 indicating the determination result. It outputs to the replacement execution unit 1002 (S23).

The rearrangement execution unit 1.002 inputs the rearrangement instruction information 200, and if the partial management information 30 i included in the rearrangement instruction information 200 indicates that it is not a continuous sector, Registers the partial management information 30 i in the temporary recording area 100 3 (S 224). The above processing is repeated until all of the management information 300 read out by the management information reading unit 101 is divided and sequentially processed by the rearrangement determination unit 102 as partial management information 30 i. This operation is performed until the partial management information 300i at the end of the management information 300 of the recording medium 1 is read (S25). Then, the process proceeds to the step of reading and processing the sector data of the recording medium 1 (FIG. 25).

In FIG. 25, the data reading unit 1001 specifies the positions of the sectors on the recording medium 1 in order (S31), reads the sector data of the sector at the specified position in order, and performs the sorting execution unit 100. Output to 02 (S32). The reordering execution unit 1002 determines whether the sector of the input sector data is included in any of the partial management information 30i registered in the temporary recording area 1003 (S33). ).

As a result of the determination, when the sector data is not included, the sector data is given to the data writing unit 104, so that the data writing unit 104 writes the input sector data to the recording medium 2 and manages the data. The corresponding management information is generated by the information generation unit 105 (S34), and the process proceeds to a determination process (S36) described later. The management information generated here is temporary, and the final management information 500 is formed when it is written in the recording media 2.

On the other hand, the reordering execution unit 1002 determines that the sector of the input sector data is included in any of the partial management information 30i registered in the temporary recording area 1003. If it is set, the input sector data is written to the temporary recording area 1003 and held (S35).

Finally, it is determined whether the reading of data from the recording medium 1 by the data reading unit 1001 is completed (S36). At the point of completion, the step of rearranging the sector data temporarily recorded in the temporary recording area 1003 by the rearrangement execution unit 1002 and completing the duplication recording on the recording medium 2 (FIG. 26) Move to).

In the step of rearranging the temporarily recorded sector data and completing the duplication recording on the recording medium 2 in FIG. 26, the partial management information 30 i registered in the temporary recording area 100 3 is sequentially read. (S41), the position of the sector data recorded in the temporary recording area 1003 is specified based on the read partial management information 30i (S42), and the sector data at the specified position is specified. Is read from the temporary storage area 1003 (S43), the sector data is written to the recording medium 2 via the data writing section 104, and the corresponding management information is written to the management information generating section 105. (S44). The management information generated here is temporary, and the final management information 500 is formed when the management information is written to the recording medium 2.

The processing from S42 to S44 is performed for one piece of partial management information 30i (S45), and further, for all the partial management information 30i registered in the temporary recording area 1003. After that (S46), finally the management information 500 is formed and recorded on the recording medium 2 by the management information writing unit 106 (S47), and the duplication recording of the data is completed.

In the data duplication recording apparatus according to the fifth embodiment described above, the rearrangement execution unit 103 transmits the rearrangement execution unit 103 from the recording medium 1 based on the rearrangement instruction information 200 output from the rearrangement determination unit 102. The reading of the sector data and the rearranging of the sector data were performed at the same time. Specifically, the reading position of the sector data on the recording medium 1 is controlled according to the sorting instruction information 200. Although such a data duplication recording apparatus has a simple configuration, the access control of the recording medium 1 affects the execution speed of the rearrangement. The data duplication recording apparatus according to the sixth embodiment avoids the burden of controlling the access to the recording medium 1 through the temporary recording area 1003. Further, in the sixth embodiment, the sector data determined not to be rearranged is sent to the data writing unit 104 without going through the temporary recording. However, all the read sector data is temporarily stored. It is also possible to temporarily record the data in the recording area 1003 and send it to the data writing unit 104 after performing the optimal rearrangement. The configuration of the data duplication recording device is the same as that shown in FIG.

Further, in the present embodiment, the sector data to be rearranged is first read out by data reading section 1001 and temporarily recorded in temporary recording area 1003, and then temporarily stored in temporary recording area 1003. The temporarily recorded sector data is used when rearranging. However, the sorting procedure is not limited to this. For example, in the process of reading the sector data in the sequential order of the first sector, the sector of the sector determined to be rearranged included in the partial management information 30 i registered in the temporary recording area 100 3 Data reading is skipped; only the sector data that is not required to be rearranged is read and written to the recording medium 2 through the data writing section 104. Thereafter, the sector data to be rearranged can be controlled such that the sector data is rearranged and read again from the recording medium 1 when the sector data is written to the recording medium 2.

Note that the rearrangement determination section 102 of the fifth and sixth embodiments always performs rearrangement instruction information 200 0 when the sector pointed to by the partial management information 30 i is discontinuous. Is ordered, but by adding an external instruction input signal, etc., the sector data is not forcibly rearranged even if it is discontinuous (rearrangement is prohibited). It may be. This processing is performed when there is a request to save the data as it is recorded on the recording medium 1 (to completely restore the recording medium 1 from the data copied and recorded on the recording medium 2), or when the recording medium It is used for the purpose of substantially suppressing copying from the recording medium 1 to the recording medium 2 by making continuous reproduction impossible when copying to the recording medium 2.

The data duplication recording apparatuses according to the fifth and sixth embodiments have been described on the premise that the recording medium 1 is a semiconductor medium and the recording medium 2 is a disk medium, but in the fifth and sixth embodiments The recording media that can be handled by the indicated data duplication recording device is not limited to this combination. Fifth and sixth embodiments Any of the data duplication recording apparatuses according to the present invention is a general data duplication recording apparatus that can be applied to data duplication recording involving data rearrangement in various combinations of recording media.

In addition, here, the unit of reading data from the recording medium 1 or writing data to the recording medium 2 is a sector, but the unit of reading or writing of data is not limited to a sector, but is a predetermined data length. Good.

(Seventh embodiment)

The procedure of copying and recording data according to the fifth and sixth embodiments described above is executed based on a program. FIG. 27 is a configuration diagram of a computer that executes a program of a procedure for duplicating and recording data according to the fifth and sixth embodiments. The computer in Fig. 27 has a CPU (Central Processing Unit) 1401, a program storage memory 1402 for storing various programs including data duplication recording programs and data, a work memory 144, a recording medium 1 Media driver for accessing the recording media 1 that is detachably mounted and mounted, and media for accessing the recording media 2 that is mounted with the recording media 2 detachably mounted. Driver 1405 and an external interface 1446 to which various communication lines such as the Internet can be connected. These units are communicably connected to each other via a bus.

The data duplication recording program stored in the program storage memory 1442 is the fixed data recorded in the program storage memory 1442 when the program storage memory 1402 is composed of a non-rewritable ROM (Read Only Memory). Program. In the case of a rewritable memory such as a program storage memory 1442 hard disk or a flash memory, the program is a program downloaded from the outside through an external interface 1446.

During data replication recording, CPU 1 4 0 1 loads the store data replicated recorded program in the program storage memory 1 ⁴ 0 2, sequentially carried out as follows the specified operation by using the program.

In the fifth embodiment, the management information 300 is read from the recording medium 1 through the media drive 144 and stored in the work memory 144. next, From the management information 300 in the work memory 1403, partial management information 300i of a predetermined length is cut out (read) and sequentially output. For each of the partial management information 30 i, it is determined whether or not the position of the sector data on the recording medium 1 specified by the partial management information 30 i is continuous, and the media drive 14 is determined according to the determination result. Then, the corresponding sector data is read out through 04, and the read sector data is written to the recording medium 2 through the media drive 1405. After performing this for all the partial management information 300 i cut out from the management information 300 0, the management information 500 for the recording medium 2 is formed on the work memory 140 3, and the media drive Through 1405, the formed management information 500 is written to the recording medium 2.

In the sixth embodiment, the management information 300 is read from the recording medium 1 through the medium 1 drive 144 and stored in the work memory 1403. Next, one or more pieces of partial management information 300i of a predetermined length are cut out from the management information 300 in the work memory 1403. For each of the extracted partial management information 30 i, it is determined whether or not the position of the sector data on the recording medium 1 specified by the partial management information 30 i is continuous, and is determined to be discontinuous. When this is done, the partial management information 300i is recorded in the work memory 1443 corresponding to the temporary recording area 1003. As a result, the sector data of the recording medium 1 for which the sorting is to be performed (the designation information thereof) is registered in the work memory 1443.

Each sector data recorded on the recording medium 1 is read through the media drive 144. At this time, if the read sector data is not included in the sector data registered in the work memory 144, it is written directly to the recording medium 2 through the media drive 144. If it is included, it is temporarily recorded and held in the work memory 1443.

One or more of the sector data temporarily recorded in this manner includes a portion recorded in the work memory 1443 at a predetermined time including a time when reading of all the sector data from the recording medium 1 is completed. It is rearranged on the work memory 1403 based on the management information 30i, and is written to the recording medium 2 through the media drive 144. Finally, the management information 500 for the recording medium 2 is formed on the work memory 1403, and is written to the recording medium 2 through the media drive 1405. In the seventh embodiment, this data duplication recording program is stored in a computer-readable recording medium. In the present embodiment, the program storage memory 1402 is described as the recording medium, but is not limited to this. For example, a magnetic tape device, a CD-ROMZR / RW device, a DVD-ROMZRAM / R RW device, a MO (magneto-optic) device, an SD memory card device, and an FD, which are not shown as external storage devices not shown in the computer of FIG. (Flexible Disc) A program reading device such as a drive is provided, and magnetic tape, CD-ROM, CD-R, CD-RW, DVD_ROM, DVD-RAM, which are readable recording media when inserted into DVD-R, DVD-RW, MO, SD memory card and FD may be used. Industrial applicability

As described above, according to the present invention, when data is duplicated and recorded from one recording medium to another recording medium, and data is reproduced from the other recording medium, it is possible to suppress the occurrence of seek time. It is possible to provide a data copying apparatus having features such that continuous data can be reproduced without interruption, and data encoded and recorded by different methods can be reproduced and reproduced by a specific reproducing apparatus.

Claims

The scope of the claims

1. A data duplication recording apparatus for recording data of a first recording medium (171A, 1) on a second recording medium (171B, 2) different from the first recording medium, wherein the first Read the data from the recording medium, process the read data according to a predetermined rule for properly reproducing the data of the second recording medium, and process the processed data into the second Data recorded on a recording medium

2. a reading means for reading the encoded data recorded on the first recording medium (171A); 10. steps (1 1 1, 17 OA);

Coding method determining means (1 1 2) for determining whether the code method of the read coded data is a predetermined coding method;

If the determined encoding method is not the predetermined encoding method, encoded data for converting the read encoded data into encoded data of the predetermined encoding method; 15 conversion means (1 13);

The data duplication recording device (100) according to claim 1, further comprising recording means (114) for recording the converted coded data on the second recording medium (171B).

3. If the determined encoding system is not the predetermined encoding system, the recording unit further records the read encoded data on the second recording medium.

20. The data duplication recording apparatus according to claim 2.

4. The data duplication recording according to claim 2 or 3, wherein the encoded data conversion means has switching means (115A, 115B) for switching whether or not to convert the read encoded data. apparatus.

5. Five steps (111 A, 17 OA) for reading the encoded data recorded on the first recording medium (171A);

Coding method determining means (1 12) for determining whether the coding method of the read coded data is a predetermined coding method;

Coded data conversion means (1 13) for converting the read coded data into coded data of the predetermined coding method; Recording means (1 14 A) for recording any of the read encoded data and the converted encoded data on the second recording medium;

If the determined code method is not the predetermined code method, the read coded data is output to the coded data conversion means, and the determined coding method is the predetermined code method. 2. The data duplication recording apparatus according to claim 1, further comprising: a switching unit (115 A) that outputs the read encoded data to the recording unit when the encoding method is one of the following.

6. Continuous data is divided into a plurality of unit data and recorded in advance on the first recording medium (1), and the continuous data is recorded on the second recording medium (2). At this time, an ordering means (103, 1002) for reading the plurality of unit data from the first recording medium and outputting the plurality of unit data in a continuous order;

The data according to claim 1, further comprising: a data recording unit (104) for sequentially inputting the plurality of unit data output from the ordering unit and recording the plurality of unit data in a series of areas of the second recording medium. Copy recording device.

7. The method according to claim 6, wherein, when reading the plurality of unit data from the first recording medium, the ordering unit reads the plurality of unit data in the order of the continuation. Data duplication recording device.

8. A predetermined recording area (1003) is further provided,

The ordering means reads the plurality of unit data from the first recording medium and records the plurality of unit data in the predetermined recording area, and reads the recorded plurality of unit data from the predetermined recording area in the continuous order. 7. The data duplication recording apparatus according to claim 6, which outputs the data.

9. In the first recording medium, each of the plurality of unit data is recorded for each of a plurality of unit recording areas,

The ordering means includes:

Determining means (102) for determining whether or not the plurality of unit recording areas in which the plurality of unit data are recorded are positioned in the first recording medium in the order of the continuation;

Based on the result of the determination that the position is not determined by the determination unit, The data duplication recording apparatus according to any one of claims 6 to 8, further comprising an ordering means (103, 1002) for rearranging and outputting the data in the continuous order.

10. In the second recording medium, a minimum data length in which the unit data is to be recorded according to the order of the continuation is defined,

The data according to claim 9, wherein the determination unit determines whether or not the unit data follows the consecutive order at least for each of the minimum data lengths in the plurality of unit recording areas. Copy recording device.

1 1. Record the data of the first prepared recording medium (171A, 1) on the prepared second recording medium (171B, 2) different from the first recording medium. A data duplication recording method,

Reading data from the first recording medium, processing the read data in accordance with a predetermined rule for properly reproducing the data of the second recording medium, A data duplication recording method characterized by recording on a second recording medium.

1 2. a step of reading the encoded data recorded on the first recording medium (ST11);

Determining whether the encoding scheme of the read encoded data is a predetermined encoding scheme (ST12);

When the determined encoding method is not the predetermined encoding method, converting the read encoded data into encoded data of the predetermined encoding method (ST13);

Recording the converted encoded data on the second recording medium (ST 16). The data duplication recording method according to claim 11, further comprising:

13. The continuous data is divided into a plurality of unit data and pre-recorded, and the pre-recorded first recording medium (1) and the continuous data are stored in the second recording medium (2). When duplicating,

An ordering step (S6) of reading the plurality of unit data from the first recording medium (1) and outputting the plurality of unit data according to a sequential order;

Sequentially inputting the plurality of unit data output from the ordering step; 12. The data duplication recording method according to claim 11, further comprising a data recording step (S7) of recording data in a series of areas of the second recording medium.

14. Data for recording the data of the first prepared recording medium (171A, 1) on the prepared second recording medium (171B, 2) different from the first recording medium. A data duplication recording program for causing a computer to execute a duplication recording method,

The data record duplication method,

Reading data from the first recording medium, processing the read data in accordance with a predetermined rule for properly reproducing the data of the second recording medium, A data duplication recording program recorded on a second recording medium.

15. Duplicate the data of the first prepared recording medium (171A, 1) and record it on the second prepared recording medium (171B, 2) different from the first recording medium. Data duplication recording program for causing a computer to execute a data duplication recording method to be recorded: a machine-readable recording medium recording a program,

The data record duplication method,

Reading data from the first recording medium, processing the read data in accordance with a predetermined rule for properly reproducing the data of the second recording medium, A computer-readable recording medium recording a data duplication recording program, which is recorded on a second recording medium (130, 1402).