JP3884608B2 - Information recording medium and reproducing apparatus therefor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an information recording medium for recording information and a reproducing apparatus thereof.
[0002]
[Prior art]
Nowadays, an information recording medium having a large information recording capacity, such as a DVD, has been developed, and video data such as a movie is recorded and sold with high quality.
[0003]
[Problems to be solved by the invention]
Recorded video data such as movies can be played back and forth any number of times.
In general, the purchased user will not play the movie 3 or 4 times or more, and it can be replayed as many times as possible. .
[0004]
It is an object of the present invention to provide an information recording medium and a reproducing apparatus for protecting the copyright.
[0005]
[Means for Solving the Problems]
In the invention of claim 1, in an information recording / reproducing apparatus for reproducing information recorded on an information recording medium,
Said information reduces the number of reproducible times recorded on the recording medium for each information reproduction, is provided with a reproducible number processing unit for prohibiting the reproduction time reproducible number is 0,
Dividing the information recorded in the information recording medium with the number of reproducible times and providing it for each area;
Reproduction is prohibited when the reproducible number of times in all areas is zero .
[0007]
According to a second aspect of the present invention, there is provided a reproducible time processing unit for reducing the reproducible time recorded on the information recording medium in accordance with the information reproducible time and prohibiting reproduction when the reproducible time is zero.
[0008]
According to a third aspect of the present invention, there is provided a recorded information erasing unit for erasing the recording on the information recording medium when the reproducible number of times or the reproducible time becomes zero.
In the invention of claim 4, the reproducible number processing unit, the reproducible time processing unit, and the recorded information erasing unit operate by reading a reproduction program recorded on the information recording medium.
[0009]
In the invention of claim 5 , the information recorded on the information recording medium is recorded on the information recording medium in which the recorded information is divided and a predetermined number of reproducible times is recorded for each area . subtracting the number of reproducible times for each area to play, when the reproducible number of all the regions of 0 is recorded is reproduction program to prohibit playback.
[0011]
According to a sixth aspect of the present invention, a predetermined reproducible time is recorded on an information recording medium, and the reproduction can be performed according to the information reproduction time each time the reproduction program reproduces information recorded on the information recording medium. When the time is reduced and the reproducible time is 0, the reproduction is prohibited.
[0012]
According to a seventh aspect of the present invention, the reproduction program erases the recording on the information recording medium when the number of reproducible times or the reproducible time becomes zero.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a configuration diagram of an embodiment of the information recording / reproducing apparatus according to the present invention, and FIG. 2 is an explanatory diagram of the embodiment of the information recording medium of the present invention.
[0014]
FIG. 1 shows only a part according to the present invention, where 1 is a reproducible number processing unit, 2 is a reproducible time processing unit, 3 is a recorded information erasing unit, 4 is a control unit, and 5 and 6 are interfaces (I / I O) and 7 are processors for executing processing.
[0015]
The I / O 5 is connected to a writing / reading unit for writing / reading information of an information recording / reproducing apparatus main body (not shown).
The I / O 6 is connected to a recording / reproducing unit that performs recording / reproduction of an information recording / reproducing apparatus main body (not shown).
[0016]
In FIG. 2, reference numeral 10 denotes an information recording medium such as a DVD.
Reference numeral 11 denotes recorded information recorded on the information recording medium 10, reference numeral 12 denotes a reproduction program, which will be described later, reference numeral 13 denotes a reproducible number of times, and reference numeral 14 denotes a reproducible time.
The reproducible number 13 is recorded in advance as the number of times that the reproduction is restricted, and the reproducible time 14 is recorded in advance as the time for which reproduction is restricted.
[0017]
Next, the operation of the first embodiment of the present invention will be described with reference to FIG.
When a reproduction operation command is input from the I / O 6, the operation is started.
In step S1, the control unit 4 reads out the reproduction program 12 described in FIG. 2 via the I / O 5 and records it in the reproducible number processing unit 1.
[0018]
In step S2, the reproducible number processing unit 1 reads the reproducible number 13 described with reference to FIG. 2 via the I / O 5, and proceeds to step S3.
In step S3, the reproducible number processing unit 1 determines whether or not the read reproducible number is 0. If the determination is YES, the process proceeds to step S4 to instruct reproduction prohibition via the I / O 6. To finish the process.
[0019]
If the determination in step S3 is NO, the process proceeds to step S5, the reproduction is commanded through I / O 6, and the process proceeds to step S6 and waits until the reproduction end is transferred through I / O 6.
[0020]
When the end of reproduction is transferred, the process proceeds to step S7, the number of reproducible times is decreased, and the process proceeds to step S8, and is recorded in the reproducible number 13 of the information recording medium 10 described with reference to FIG. To do.
[0021]
Next, the operation of the second embodiment of the present invention will be described with reference to FIG.
In the first embodiment, there is a problem that the number of reproducible times decreases even if it is interrupted halfway without reproducing from the beginning to the end, and the reproduction is prohibited before reproducing all.
Therefore, in the second embodiment, the recording information 11 described with reference to FIG. 2 is divided into a plurality of parts, and a reproducible number of times 13 is provided for each divided area.
[0022]
In the second embodiment, as shown in FIG. 4, step S10 is executed instead of step S3 of the first embodiment described in FIG. 3, and step S11 is executed instead of step S7.
That is, in step S10, it is determined whether or not the reproducible number of times read in step S2 is 0 for all areas. If the determination is YES, the process proceeds to step S4 to prohibit reproduction.
[0023]
If the reproduction is completed in step S6, the process proceeds to step S11. In step S11, the number of reproducible times for the area reproduced in step S5 is decreased, and the process proceeds to step S8.
[0024]
Next, the operation of the third embodiment of the present invention will be described with reference to FIG.
In the second embodiment, there is a problem that the reproduction is not prohibited when the possible number of reproductions does not become zero in some areas. The third embodiment is intended to solve this problem.
[0025]
In the third embodiment, as shown in FIG. 5, steps S20 and S21 are inserted between steps S10 and S5 of the second embodiment described in FIG. 4, and steps S22 and S23 are substituted for step S8. Is executed.
[0026]
That is, if the total number of reproducible times is not 0 in step S10, the process proceeds to step S20. In step S20, the reproducible time processing unit 2 reads the reproducible time 4 from the information recording medium 10, and proceeds to step S21.
[0027]
In step S21, the reproducible time processing unit 2 determines whether or not the read reproducible time is 0. If the determination is YES, the process proceeds to step S4 and prohibits reproduction. If the determination is NO, the process proceeds to step S5 to start reproduction.
[0028]
When the reproduction is finished, in step S22, the reproducible time processing unit 2 subtracts the time reproduced in step S5 from the reproducible time, and moves to step S23 to display the updated number of reproducible times and reproducible time in the information recording medium 10 to finish the processing.
[0029]
In the embodiment, when the number of reproducible times or the reproducible time becomes zero, the process proceeds to step S4 to prohibit the reproduction. However, the recorded information erasing unit 3 shown in FIG. You may make it delete the information which exists.
In this case, as the information to be erased, the recorded information 11 may be erased or the reproduction program 12 may be erased to prohibit the reproduction.
[0030]
【The invention's effect】
As described above, according to the present invention, the number of reproducible times is reduced every time information is reproduced, and the reproduction is prohibited when the number of reproducible times becomes 0, so that the copyright can be protected. it can.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of an embodiment of an information recording / reproducing apparatus according to the present invention.
FIG. 2 is an explanatory diagram of an embodiment of an information recording medium of the present invention.
FIG. 3 is an operation flowchart of the first embodiment of the present invention.
FIG. 4 is an operation flowchart of the second embodiment of the present invention.
FIG. 5 is an operation flowchart of the third embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Reproducible frequency process part 2 Reproducible time process part 3 Recorded information erasure part 4 Control part 5, 6 Interface (I / O)
7 Processor (CPU)
10 information recording medium 11 recorded information 12 reproduction program 13 reproducible number of times 14 reproducible time

Claims (7)

In an information recording / reproducing apparatus for reproducing information recorded on an information recording medium,
Said information reduces the number of reproducible times recorded on the recording medium for each information reproduction, is provided with a reproducible number processing unit for prohibiting the reproduction time reproducible number is 0,
Dividing the information recorded in the information recording medium with the number of reproducible times and providing it for each area;
An information recording / reproducing apparatus characterized in that reproduction is prohibited when the reproducible number of times of all areas is zero . 2. A reproducible time processing unit for reducing a reproducible time recorded on the information recording medium in accordance with the information replay time and prohibiting replay when the reproducible time is zero. Information recording / reproducing apparatus. 3. The information recording / reproducing apparatus according to claim 1, further comprising a recording information erasing unit that erases the recording of the information recording medium when the reproducible number of times or the reproducible time becomes zero . 2. The reproduction possible number processing unit, the reproduction possible time processing unit, and the recorded information erasing unit read out a reproduction program recorded on the information recording medium and operate. 3. The information recording / reproducing apparatus according to 3. On the information recording medium for recording the information, the recorded information is divided and a predetermined number of reproducible times is recorded for each area,
An information is recorded in which a reproduction program is recorded that reduces the number of reproducible times for each area where information recorded on an information recording medium is reproduced, and prohibits reproduction when the number of reproducible times in all areas is zero. Recording medium . To record information recording medium a predetermined playback time, the subtracting the reproducible time in accordance with the information reproduction time for each of reproducing information which the reproduction program is recorded on the information recording medium, reproducible time is claim 5, wherein the information recording medium is characterized in that so as to prohibit playback when 0. 7. The information recording medium according to claim 5 , wherein the reproduction program erases the recording of the information recording medium when the reproducible number of times or the reproducible time becomes zero .

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