JP3630287B2 - Digital data recording method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a digital data recording method capable of accurately performing copyright management when copying digital data such as audio data.
[0002]
[Prior art]
At present, for example, an ISRC (International Standard Recording Code, hereinafter simply referred to as an ISRC code) is written in an area called a post-cutting area on the inner periphery of a CD (compact disc) so that copyright management can be performed. .) Is recorded.
[0003]
Then, the applicant of the present application previously proposed that the invention disclosed in Japanese Patent Application Laid-Open No. 10-177767 can perform copyright management such as copying by charging using an ISRC code taking a DVD disk as an example. did.
[0004]
[Problems to be solved by the invention]
However, there are discs in which ISRC codes are not recorded in some cases, and it is necessary to deal with these discs.
Also, depending on the country, for example, when copying a CD, it is common practice to copy it for free once (US, Japan), etc. There is a desire to change billing management according to the number of copies.
Of course, a more simplified system is desired when charging.
Therefore, the present invention is intended to provide an apparatus that satisfies the above-mentioned demand.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention comprises the following means 1) and 2) .
That is,
[0006]
The presence / absence of predetermined copyright management information of the incoming data to be copied is detected, and whether or not the incoming data can be copied and the copy is charged based on the copyright management information and the number of times of copying . It is a digital data recording method that determines whether or not and permits copying for a fee after a predetermined number of times ,
Generating a temporary ISRC code with an internal code generator when the incoming data does not have an ISRC code;
In addition to the ISRC code in the copyright management information, if there is no further ISRC code , whether or not copying is possible is determined based on at least one information of a temporary ISRC code generated by an internal code generator and copy management information And steps to
A digital data recording method comprising:
[0007]
2) The digital data recording method according to claim 1, wherein the predetermined number of times is one .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described.
Figure 1 is a schematic block diagram showing a recording system of digital data recording apparatus is employed that apply to that embodiment.
The digital data recording apparatus according to the present embodiment may be a recording apparatus that records digital audio data such as CD and DVD audio, or a recording apparatus that records video data such as a DVD video disc. In order to make the explanation easy to understand, a recording apparatus that handles audio data will be described here.
[0010]
The digital data recording apparatus 1 is used to exchange data with a data providing apparatus P such as a digital audio disk such as a CD, a DVD disk (video / audio) player, or a digital data recording apparatus according to the present embodiment. I / O unit 1a for connection via a serial interface according to IEC958, removable card type of prepaid type or non-detachable built-in electronic wallet 1b, control of each part in the device and execution of the program of this device CPU 1c for performing the recording, a code generator 1e for generating a temporary ISRC code when an ISRC code is not added to incoming information to be described later, for example, a detachable recording composed of an IC memory, a memory card, etc. Media 1f, for temporarily capturing incoming copyright information AM 1j, D / A converter 1h for reading digital audio data recorded on an internal bus 1g for exchanging data with each of the above-mentioned units, for example, a recording medium 1f, and converting it into analog data; An output terminal 1i and the like for outputting an analog audio signal converted as a stereo signal of the channel are roughly configured.
[0011]
FIG. 2 (a) shows a schematic data structure in the recording medium 1f, a header part (or physical information part) 1f-1 for recording copyright information and a data part for recording audio data and the like. (Applied physical information part) 1f-2. FIG. 2B is a schematic configuration of the header part (or physical information part) 1 f-1, for example, composed of 16 sectors “1” to “16”, and physical format information is recorded in the sector “1”. In addition, disc manufacturing information is recorded in sector “2”, and copyright management information is recorded in sectors “3” and “4”.
For example, in the first byte of the sectors “3” and “4”, for example, copy management information such as the number of copies and a fee system corresponding to the copy is recorded. From the second byte to the 18th byte, an ISRC code indicating a music source (program source) and an SID (source ID) indicating a disc manufacturer are recorded for each title.
[0012]
Next, the operation of the recording apparatus will be described with reference to the flowchart of FIG.
The data providing device P is set to the reproduction state or the data transfer mode, and the data recording device 1 is set to the recording mode (copy mode) by operating means (not shown).
First, if there is header information from the data providing device P, this information is received, and this data is once taken into the RAM 1j (step S1). If there is copy management information in this header, this is checked. If it is confirmed that the incoming information is not copied in the past (1 generation) (Yes in step S2), the copy management information is copied. The number of times is increased by 1 and the header is changed by setting a 2nd generation flag (step S3), and the copy mode is executed, and the subsequent audio data is copied together with the header into the predetermined area in the recording medium 1f ( Step S9).
[0013]
On the other hand, in step S1, if there is no copy management information in the header, or if it is confirmed that the source information has already been copied at least once in the header, the ISRC code is stored in the header. Whether or not a temporary ISRC code to be described later is recorded (step S4). If Yes, it is checked whether the electronic wallet 1b has a shortage of balance (step S7). If there is no shortage (Yes in step S7), the number of copies is increased by 1 in the copy management information (step S8), the copy fee is paid (ie, reduced) from the electronic wallet 1b (step S9), and recorded. The ISRC code, the copy management information, and the audio data are recorded and copied in the medium 1f (step S9). If NO in step S6, the process ends (copying is not possible).
[0014]
If NO in step S4, first, it is checked whether or not the balance in the electronic wallet 1b is insufficient (step S4). If it is not insufficient (Yes in step S4), the code generator 9 identifies the balance. A code consisting of characters and random numbers is generated and added to the data of a predetermined byte at the beginning of the audio data, and this is provisionally ISRC code (step S6), and the number of copies is increased by 1 in the copy management information (step S7). ). Then, after charging, the temporary ISRC code, copy management information, and audio information are copied into the recording medium 1f. If there is no balance in step S4, the process ends (copying is not possible).
When data is transferred from this apparatus, audio data is transferred through the input / output unit 1a together with the header information recorded on the recording medium 1f.
[0015]
As described above, according to the apparatus of the present embodiment, the number of copies of digital data such as a CD is managed by the header, the free copy is permitted once, and if there is an ISRC code after the second time, or the ISRC code is If it is not granted, the copyright management is ensured because a fee is charged.
In addition, when an ISRC code is not assigned, a temporary ISRC code is assigned, or when copying is performed, the number of copies is increased and managed according to each code. It becomes easier to manage copyrights when transferring data.
[0016]
Next, the data recording apparatus according to the second embodiment will be described with reference to the flowcharts of FIGS. Components having the same operational effects as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.
The apparatus according to the second embodiment is the same as the apparatus shown in FIG. 1 except that a billing management table 1d indicated by a one-dot chain line is added. This accounting management table 1d is pre-assigned with ISRC codes corresponding to the number of about 1 million songs, additional number of times of copying corresponding to these codes, and ISC codes and codes corresponding to newly released songs. This is a management table capable of additionally recording a temporary code when there is not, and additionally recording the number of copies corresponding to these.
[0017]
In FIG. 4, first, when the data providing device P is set to the reproduction mode or the data transfer mode and the device according to the present embodiment is set to the recording mode as described above, if there is header information, it is received (step S10). It is determined whether or not the ISRC code is stored in the header (step S11). If Yes, the ISRC code is searched in the table 1d and the number of times it is copied is checked (step S14). If it is confirmed that the copy of the source information is the first time (Yes in step S15), the number of times is entered as 1 in the corresponding code in the table 1d (step S16), and the transmission information is displayed due to the appearance of a new song or the like. If there is ISRC code information in the table, but there is no code data in the table 1d, it is recorded in the table 1d that the first copy is made together with the ISRC code.
Next, the number of copies is increased by 1 in the transmission header, and the header is changed by setting a two-generation flag (step S13). The copy mode is entered, and the audio data is added together with the header changed to a predetermined area in the recording medium 1f. Copy (step S21).
[0018]
If it is determined that the copy is not the first time in the reference to the management data in the table 1d in step S15 (NO in step S15), the electronic wallet 3 is checked for a shortage of balance (step S17). If it is determined that copying is not possible and it is determined that there is a balance (Yes in step S17), the number of times this ISRC code is copied is incremented by 1 and recorded in the table 1d (step S18). The number of times of copying is increased by 1 to change the header (step S19), charging is made, that is, the electronic wallet is reduced (step S20), and the header and audio data are copied to a predetermined area in the recording medium 1f (step S20). Step 21).
[0019]
If it is determined in step S11 that the ISRC code is not recorded in the header of the source information (NO in step S11), the code generator 1e uses the code consisting of the identification character and the random number in the same manner as in the above embodiment. This code is added to a part of the copy data to form a temporary ISRC code, and the temporary code and the number of copies are recorded in the table 1d (step 16). If not, the temporary ISRC code, copy number information and audio data are recorded and copied to the recording medium 1f as it is (step S21).
In step S11, the detection method when the temporary 1SRC code is received does not have to be a perfect match between the code in the table and the incoming code, but may be a match by relative comparison.
[0020]
Therefore, according to the apparatus according to the second embodiment, since a copyright management table is prepared, closed-type copyright management of only this apparatus is possible, and the recording medium 1f is also provided. Since the copy history is recorded, it is easy to perform subsequent copying such as during transfer.
In this embodiment, closed copy management only for this apparatus is the main objective, and it is not a necessary requirement to record the copy history on the recording medium 1f.
[0021]
Next, a third embodiment will be described.
For example, depending on the disc, the IRSC code may be added after the actual data such as audio data to be copied, so that such disc copy management can be performed.
FIG. 5 is a flowchart according to the embodiment.
The difference from the flowchart of FIG. 4 described above is that step S10a for performing IRSC code data decoding instead of reception of header information immediately after the start is provided, and step S23 and step S24 are added. .
[0022]
In the case of this apparatus, the audio data before the IRSC code arrives is copied, and the data including the IRSC code is once taken into the RAM, and the data is read out to the CPU 1c to decode the IRSC code. Yes. Then, in step 17 for confirming the balance after the IRSC code is detected, when it is determined that the balance is small, the copy mode is canceled (step S23), and the data copied so far is erased. Is.
[0023]
In the above-described embodiments, the data providing apparatus has been described using the recording apparatus. However, the present invention is not limited to this, and an apparatus including a reproduction function may be used.
In addition, the charge for copying may be charged from the first copy, or the charge may be changed according to the number of copies. In that case, a charge table corresponding to the number of times of copying may be prepared in the CPU 1c, and charging may be performed by referring to this table.
[0024]
【The invention's effect】
According to the apparatus of the present invention, in particular, copy management can be performed by assigning a temporary ISRC code to data to which no ISRC code is assigned, and copyright management is possible with an extremely simple configuration.
In addition, in an apparatus having a means for recording copy history information, it is easy to perform subsequent copy management, such as when data is transferred after copying.
[Brief description of the drawings]
1 is a schematic block diagram of a recording system applied Ru data recording apparatus is employed in the examples of the present invention.
FIG. 2 is a data area diagram of a recording medium.
FIG. 3 is a flowchart for explaining the operation of the apparatus of FIG. 1;
FIG. 4 is a flowchart for explaining a second embodiment;
FIG. 5 is a flowchart for explaining a third embodiment;
[Explanation of symbols]
1 Data Recording Device 1a Input / Output Unit 1b Electronic Wallet 1c CPC (Control Unit)
1d Charging table 1e Code generator 1f Recording medium 1j RAM
P Data providing device

Claims (2)

The presence / absence of predetermined copyright management information of the incoming data to be copied is detected, and whether or not the incoming data can be copied and whether the copy is charged based on the copyright management information and the number of times of copying is determined. determine, since a predetermined number of times a digital data recording method of copy permission by paid,
Generating a temporary ISRC code with an internal code generator if there is no ISRC code in the incoming data;
In addition to the ISRC code in the copyright management information, if there is no further ISRC code , whether or not copying is possible is determined based on at least one information of a temporary ISRC code generated by an internal code generator and copy management information And steps to
A digital data recording method comprising: The digital data recording method according to claim 1, wherein the predetermined number of times is one .

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