JP3114339B2 - Recording device, reproduction device, output device, data recording method, data reproduction method, and data output method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a digital video signal,
The present invention relates to a copy protection technique for transmitting a digital signal such as a digital audio signal in the form of a packet.

[0002]

2. Description of the Related Art Conventionally, as a copy protection technique for limiting dubbing of a digital signal, for example, SCMS (Serial Copy Management System) of DAT is known. In this system, CD and DAT
Even when a music tape, satellite broadcasting digital audio, or the like has a copy prohibition flag, digital audio signals can be copied only for one generation.

[0003]

However, in the above-mentioned conventional SCMS, copying of the digital audio signal is permitted only for one generation by attaching a copy inhibiting flag, or copying of the digital audio signal is unlimited without attaching the copy inhibiting flag. Since the user can only select either the permission or the permission, the degree of freedom in setting the type of copy protection is low.

A digital VTR (hereinafter referred to as a DVTR)
Digital video signal using a hereinafter) or a digital communication network, the digital audio signal, even in a communication system, such as a character code signal (Multimedia Communication System), it is necessary to copy protection technology, it is realized
Copy protection technology limits the number of copies
Protection method and image quality when copying
Because it is a protection method by giving
If the information provider provides certain information only during a specific service period,
Requesting permission to copy
There is a problem that can not be. Then, the present invention solves the above problem.
It was designed to solve the problem
It is an object of the present invention to provide a copy protection technique in which the time for protection can be set arbitrarily and which can be applied to recording and / or reproducing apparatuses for digital signals such as digital video signals and digital audio signals.

[0005]

A book for solving the above-mentioned problems.
The recording apparatus according to the present invention is capable of transmitting data transmitted in the form of packets.
Data is input to a recording device that records the data.
At least for copy protection of the data.
Is also a parameter with parameter information indicating timed copy restriction.
Input means for inputting a packet;
Recording means for recording data; input from the input means;
Parameter information indicating the timed copy restriction from the packet
Parameter information detecting means for detecting information,
Indicates the timed copy limit detected by the data information detection means.
Based on the parameter information.
Recording control means for controlling recording.
You. In addition, the playback device according to the present invention has a
In a reproducing apparatus for reproducing data, a copy of the data is reproduced.
-Indicates at least timed data deletion related to protection
Plays back packet data with parameter information
Reproducing means for erasing the timed data from the packet
Parameter information detecting means for detecting parameter information indicating
A step and a parameter indicating deletion of the detected timed data
Reproduction for controlling the reproduction means based on information
A parameter indicating the control means and the detected timed data deletion.
Data to be erased based on data information
Characteristic changing means. In addition, the present invention
Output the data in the form of a packet
In the output device, copy protection of the data is performed.
At least the period during which data can be recorded on the recording device
Or a timed copy restriction that is a period during which recording is not possible
Parameter information generator that generates parameter information indicating
And a parameter indicating the timed copy restriction in the packet.
Parameter information providing means for providing data information
In addition, parameter information indicating the timed copy restriction is added.
Output means for outputting the output packet.
And Further, the output device according to the present invention has a packet type
An output device for outputting the data of the state;
At least at the specified time regarding copy protection.
Parameter indicating timed data erasure to erase fixed data
Parameter information generating means for generating information;
Parameter information indicating that the timed data is to be deleted .
Parameter information adding means, and at least the
Output a packet to which parameter information indicating data
And output means for inputting power. Also book
The data recording method according to the invention is transmitted in the form of a packet.
Data is input and the data record that records the data is entered.
Recording method, the copy protection of the data
Parameter information that indicates at least timed copy
An input step of inputting the given packet and before inputting
A recording process for recording the data of the
Parameter information indicating the timed copy restriction from the
Detecting parameter information to be detected, and detecting the parameter information.
Based on the parameter information indicating the
And a recording control step of controlling the recording step.
I do. In addition, the data reproducing method according to the present invention includes a
In a data reproducing method for reproducing data in the form of
At least a time limit for copy protection of the data
Packet to which parameter information indicating data erasure is added
Reproducing the data of the
A detecting step of detecting parameter information indicating data erasure;
And parameter information indicating the detected timed data deletion.
A regeneration system for controlling the detection process based on the
Control process and a parameter indicating the detected timed data deletion.
Recorded data for erasing data to be reproduced based on data information
And a changing step. In addition, the present invention
Such a data output method outputs data in the form of a packet.
A data copy method.
Tect, at least for recording on a recording device
Time period during which recording or recording is not possible
Parameter for generating parameter information indicating copy restriction
An information generation step, and the timed copy restriction is applied to the packet.
Parameter information providing step of providing parameter information shown
Parameter information indicating at least the timed copy restriction
An output step of outputting a packet to which information has been added.
It is characterized by the following. Furthermore, a data output method according to the present invention
Method is a data output method for outputting data in the form of packets.
The copy protection of the data
Timed data that erases specified data at specified time at least
Parameter information for generating the parameter information indicating the data erasure
Generating and indicating the timed data erasure in the packet
A parameter information providing step of providing parameter information;
At least the parameter information indicating the timed data erasure is
Output step of outputting the assigned packet.
It is characterized by.

[0006]

According to the recording apparatus of the present invention, the data is inputted from the input means.
Parameter indicating the timed copy restriction given to the packet
Unlimited control of data recording based on information
Give a time limit to prevent dubbing
Can be. Also, the playback device of the present invention uses
Deletes the timed data attached to the
Controls data playback based on parameter information indicating past
Time to prevent unlimited dubbing by doing
Restrictions can be imposed. The output device of the present invention
Imposes a timed copy restriction on the output packet unit data.
Unlimited digital by adding parameter information shown
Data with a time limit to prevent dubbing
Can be output. Further, the output device of the present invention
Deletes timed data in the output packet unit data.
Unlimited digital by adding parameter information shown
Data with a time limit to prevent dubbing
Can be output. Also, the data recording method of the present invention
Restricts the timed copy restrictions imposed on the input packet.
Control data recording based on indicated parameter information
Time to prevent unlimited dubbing
Restrictions can be given. Also, the data reproducing method of the present invention
The method is based on the timed data attached to the reproduced data packet.
Data playback based on parameter information indicating data
To prevent unlimited dubbing by controlling
A time limit can be given. The data of the present invention
The data output method is time-
Unlimited by adding parameter information indicating the peak limit
Give time limit to prevent digital dubbing
Data can be output. Furthermore, the data of the present invention
The main method is time-limited data output in packet units.
Unlimited by adding parameter information indicating data deletion
Time limit to prevent digital dubbing
Can output the obtained data.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. (First Embodiment) In this embodiment, a digital video signal and an audio signal reproduced by a first DVTR are converted into data in the form of packets, and the second DVTR is converted via an AV bus.
And dubbing there.

To facilitate understanding of this embodiment, first,
The AV bus and the data in the form of packets in this embodiment will be described. FIG. 4 shows A in the first embodiment of the present invention.
FIG. 3 is an explanatory diagram of a V bus, in which a monitor device 31, a VTR 32, a tuner 33, an LDP 34, and a camcorder 35 are connected to an AV bus 36.
a, 36b, 37a, 37b, 38a, 38b, 39
a and 39b to form a ring-shaped network. That is, for example, the data output from the monitor device 31 passes through the AV bus 36a and the VTR 32
To the tuner 33 through the AV bus 37a,
It reaches the LDP 34 through the AV bus 38a, and the AV bus 3
The camera reaches the camcorder 35 through 9a. Then, it reaches the LDP 34 through the AV bus 39b, reaches the tuner 33 through the AV bus 38b, and reaches the VT through the AV bus 37b.
R32 and the monitor device 31 through the AV bus 36b
Return to

The AV buses 36a and 36b are housed in a single cable and are, for example, optical buses having a speed of 100 Mbit / sec. AV buses 37a, 37b, 38a, 38b, 39
The same applies to a and 39b. FIG. 5 is a format diagram showing a main configuration of data in packet format according to the first embodiment of the present invention.

The packet in the present embodiment is composed of control bits and data (audio, video, command, etc.).
have. The control bit group includes a source address indicating an AV device or the like that has transmitted data, a destination address indicating an AV device or the like of a destination of data, a protect bit group indicating copy protection information of a digital AV device such as a DVTR or DAT, and the like.

The protect bit group is composed of one or more sets of protect types and one set of parameters thereof. The types of protection, copy number restriction (not shown), then play back the number of times limit (shown
Not), time-limited copy prohibition (08 of FIG. 5 protected species
Kind, 05 in Fig. 5 can not be copied from ○ month × day,
Or that copying can be started from
Shown respectively. ), Timed program erase ( 07 in FIG.
Type of protect, 01 in Fig. 5
Indicate disappearing respectively. ), Copy image quality limitation (illustration
Without) . Among the above, the limitation on the number of playbacks and the time-limited program erasure are suitable for a large-capacity hard disk drive, not for a DVTR or DAT.

The data is, for example, the VT
A command for instructing the R32 to transmit a reproduction program, a command for instructing the tuner 33 to transmit a reception program of a predetermined channel, the VTR 32 and the tuner 33
The audio signal, the video signal, and the like to be sent to the monitor device 31 from the above and the like have a length corresponding to the content of the data.

FIG. 1 is a block diagram showing a configuration of a dubbing system using a digital signal recording / reproducing apparatus according to a first embodiment of the present invention. Here, the transmission path of only the digital video signal and the digital audio signal is shown by a thick line. The first DVTR 1 includes an operation unit 11 for setting an operation mode and the like, a control unit 12 including a microcomputer and the like, a recording and reproducing unit 13 for recording and reproducing digital video signals and digital audio signals, and the like.
An interface 14 between the control unit 12 and the recording / reproducing unit 13 and the AV bus, an electric / optical converter 15 that converts a packet output from the interface 14 into an optical signal and sends it to the AV bus 27a, and an input from the AV bus 27b. And an optical / electrical converter 16 for converting the optical signal into an electric signal.
The operation unit 11 may be a remote control device configured separately from the main body of the DVTR 1. Note that a tuner, a servo system, and the like are omitted because they are not necessary for the description of the present embodiment.

Similarly, the second DVTR 2 is operated by the operation unit 21.
, A control unit 22, a recording / reproducing unit 23, an interface 24, an optical / electrical converter 25, and an electric / optical converter 26. 2 and 3 are flowcharts showing the copy protection operation of the second DVTR in the first embodiment of the present invention. Hereinafter, with reference to FIGS. 1 to 3 and FIG.
The copy protection operation of this embodiment will be described. In the recording / reproducing section 13 of the first DVTR 1, a video tape in which copy protection information indicating the type of copy protection and its parameters are recorded at a predetermined position is set, and the recording of the second DVTR 2 is performed. Playback part 2
3, a recording video tape is set.

The user operates the operation unit 21 of the second DVTR 2 to set the recording mode, and the first DV
The playback mode is set by operating the operation unit 11 of R1. By exchanging a command and a response between the first DVTR 1 and the second DVTR 2, the second DVTR 2 can be automatically set to the recording mode in conjunction with the reproduction mode setting of the first DVTR 1. .

The control unit 12 and the interface 14 of the first DVTR 1 transmit the digital video signal, digital audio signal and copy protection information reproduced by the recording / reproduction unit 13 at predetermined lengths as shown in FIG. Is converted into a packet in which a control bit group including a protect bit group, a source address, a destination address, and the like is added to the data of FIG.
7a. Here, the source address is the first DV
Although TR1 and the destination address are the second DVTR 2, the address may be omitted in the case of one-to-one communication as in this embodiment.

The control unit 22 of the second DVTR 2 checks the destination address of the packet input from the AV bus 27a, and fetches a protect bit group (step S in FIG. 2).
1). Then, it is determined whether the type of protection is the copy number limit (step S2), and if YES, it is determined whether the copy number n indicated by the parameter is 0 (step S3).

If the parameter n is 0, copying is prohibited, and the recording operation by the recording / reproducing unit 23 is stopped.
This is displayed on the operation unit 21. Also, the first DVTR
The data indicating that the video software is copy-prohibited is sent to No. 1 (step S4). When the first DVTR 1 receives the data indicating that copying is prohibited, the first DVTR 1 stops the reproducing operation by the recording / reproducing unit 13 and displays the fact on the operation unit 11.

On the other hand, if n is not 0, n copies are permitted, so recording is performed by the recording / reproducing unit 23 (step S5). At this time, the information indicating the copy number limitation and its parameter are updated to n-1 and recorded at a predetermined position of the copied video tape (step S).
6). Therefore, if the parameter n recorded on the video tape set in the first DVTR 1 is 1, the parameter n = 0 is recorded on the copied video tape, and the copied video tape is copied again. You will not be able to do it.

If NO in step S2, it is determined whether the type of protection is copy image quality restriction (step S2).
7) If YES, the recording / reproducing unit 23 performs image quality restriction processing such as reducing the number of bits of the digital signal, and displays that effect on the operation unit 21 (step S8).
In the case of NO in step S7, it is determined whether or not timed copy is prohibited (step S9 in FIG. 3).
By checking the clock (not shown) in R2, it is determined whether or not it is the date and time specified in the parameter (step S10), and YES
If so, as in step S4, the recording operation by the recording / reproducing unit 23 is stopped, and a message to that effect is displayed on the operation unit 21. In addition, data indicating that the time-limited copy of the video software is prohibited is sent to the first DVTR 1 (step S1).
1). On the other hand, if NO in step S10, recording is performed by the recording / reproducing unit 23 (step S12). At this time, the information indicating the timed copy count restriction and its parameter (date and time) are copied as they are to a predetermined position of the copied video tape.

It should be noted that the control unit 12 of the first DVTR 1
The configuration may be such that the reproduction operation of the recording / reproducing unit 13 is stopped when the copy prohibition is detected by looking at the copy protection information recorded on the video tape. The same applies to the case where the type of protection is limited to the number of playback times, timed program erasure, etc., and the description is omitted. However, the operation in this case is an operation at the time of reproduction, not an operation at the time of recording as in the above embodiment. Further, as described above, it is suitable for a large-capacity hard disk device or the like.

(Second Embodiment) FIG. 6 is an explanatory diagram of a digital signal recording / reproducing apparatus according to a second embodiment of the present invention.
In this embodiment, a general household 41 is provided with a high-definition monitor device (hereinafter, referred to as an HD monitor device) 42 and a home storage 43 as a recording / reproducing device for digital signals, and a B-ISDN via a home AV bus 44. And the like, are connected to a high-speed and large-capacity digital communication network 45.

The home storage 43 is a digital signal recording / reproducing device having a storage capacity of several Gbits, such as a hard disk device or a magneto-optical disk device, and distributes movie software via a high-speed large-capacity digital communication network 45. It records and reproduces movie software output from the movie software storage 47 of the company 46, newspaper articles input from a newspaper article database of a newspaper company (not shown), and the like.

In this embodiment, as in the first embodiment, the movie soft storage 47 reproduces a hard disk, a magneto-optical disk, a video tape, and the like, and sets a protect bit group for each predetermined length of a video signal, an audio signal, and the like. A packet to which a control bit group including a source address, a destination address and the like is added is transferred to the home storage 4 in the general home 41 via the high-speed and large-capacity digital communication network 45.
3 The home storage 43 is the D of the first embodiment.
The control unit (not shown) has a configuration similar to that of the VTR, and fetches a protection bit group added to the packet, and executes a copy protection process based on the group. Therefore, movie software distributor 46 with unlimited dubbing
Loss can be prevented.

It should be noted that the present invention is not limited to the above-described embodiment, and various changes can be made based on the spirit of the present invention, and they are not excluded from the scope of the present invention. For example, the present invention is not limited to the video software in the above embodiment, but also audio software such as DAT and CD, and CDs.
-It can be applied to multimedia software such as I and DVI, computer software and the like. Also, magnetic tape,
The present invention can be applied to not only a recording medium such as a magnetic disk but also a recording medium such as an EEPROM.

[0026]

As described in detail above, the present invention
Recording device attaches to the packet input from the input means.
Based on the timed copy restriction parameter information
Unlimited dubbing by controlling data recording
Timed copy restrictions
According to any time set as parameter information
Copy protection. further,
Parameter information indicating copy count limit, copy image quality limit
By combining with parameter information indicating
-Protection can be performed. Further, according to the present invention,
The playback device is configured to packetize the data played back by the playback means.
Parameter information indicating timed data erasure assigned to
Unlimited dubbins by controlling data playback based on
Timed data at the same time
At any time set as parameter information indicating data deletion
Copy protection can be performed in time.
Combined with parameter information indicating the number of playbacks
Various types of copy protection.
You. Also, the output device according to the present invention provides a
Parameter information indicating timed copy restriction is added to the unit data.
To prevent unlimited digital dubbing.
And a parameter indicating timed copy restriction.
Copy data according to any time set as data information
It becomes possible to protect. In addition, the number of copies
Parameter information indicating restriction, parameter indicating copy image quality restriction
Various copy protection by combining with meter information
Can do it. Further, the output device according to the present invention
Deletes timed data in the output packet unit data.
Unlimited digital by adding parameter information shown
It is possible to prevent dubbing and at the same time
Any data set as parameter information indicating data deletion
Copy protection can be performed according to time
You. Furthermore, it is combined with parameter information indicating the number of playbacks.
Various copy protection can be performed by combining
Wear. Further, the data recording method according to the present invention
Parameter indicating the timed copy restriction assigned to the
By controlling the recording of data based on the data information, no control
Simultaneous dubbing can be prevented
Is set in the parameter information indicating the timed copy restriction
Copy protection according to the desired time for copy protection
It becomes possible to protect. In addition, the data according to the present invention
The data playback method is added to the packet of the reproduced data.
Data based on the parameter information indicating the
Prevent unlimited dubbing by controlling playback of data
While also indicating timed data erasure
Depending on the time set as parameter information,
Pea protection can be performed. In addition, the present invention
The data output method according to
Parameter information indicating timed copy restriction
It is possible to prevent unlimited digital dubbing with
At the same time as parameter information indicating timed copy
Copy protection according to the set time
It is possible to do. Furthermore, the data output according to the present invention
The output method is timed data to output data in packet units.
Unlimited data can be added by adding parameter information indicating erasure.
While it is possible to prevent digital dubbing,
Set as parameter information indicating timed data deletion
Copy protection is possible at any time
Becomes

Further, since the present invention can be applied to a receiving and recording apparatus of a multimedia communication system, it is possible to smoothly introduce a multimedia communication system.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a dubbing system using a digital signal recording / reproducing apparatus according to a first embodiment of the present invention.

FIG. 2 is a part of a flowchart showing a copy protection operation of a second DVTR according to the first embodiment of the present invention.

FIG. 3 is a part of a flowchart showing a copy protection operation of a second DVTR in the first embodiment of the present invention.

FIG. 4 is an explanatory diagram of an AV bus according to the first embodiment of the present invention.

FIG. 5 is a format diagram showing a main configuration of data in packet form according to the first embodiment of the present invention.

FIG. 6 is an explanatory diagram of a digital signal recording / reproducing apparatus according to a second embodiment of the present invention.

[Explanation of symbols]

 1 First DVTR 2 Second DVTR 43 Home Storage 47 Movie Soft Storage

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G11B 20/10 H04N 5/91 H04N 5/92

Claims (24)

(57) [Claims] (1) When data transmitted in the form of a packet is input,
A recording device for recording the data, at least
Packet to which parameter information indicating copy
Input means for inputting a packet, recording means for recording the data of the input packet, and timed copying from the packet input from the input means.
Parameter information detection to detect parameter information indicating restrictions
Output means and a time limit detected by the parameter information detecting means.
The recording method based on the parameter information indicating the
Recording control means for controlling recording on a column
A recording device characterized by the above-mentioned. 2. The data processing apparatus according to claim 1 , wherein said input means includes a copy copy of said data.
As the parameter information about the protect,
-Shows the number of copies along with parameter information
Input a packet to which parameter information is added, and the parameter information detecting means
Timed copy restriction and copy from input packet
The parameter control unit detects parameter information indicating the number of times, and the recording control unit detects the parameter information by the parameter information detection unit.
Of the timed copy limit and the number of copies detected
Control the recording means based on the parameter information.
The recording apparatus according to claim 1, wherein: 3. An input means for copying a copy of the data.
A parameter indicating the timed copy restriction on the protect
Along with the parameter information indicating the copy image quality limit
Input the given packet, and the parameter information detecting means
Timed copy restriction and copy from input packet
Detecting a parameter information indicating the image quality limit, the recording control means, said parameter information detecting means
Indicates the timed copy limit and copy image quality limit detected
Based on the parameter information.
2. The recording device according to claim 1, wherein the recording device is controlled.
Place. 4. An input means for copying a copy of the data.
Parameter indicating the type of parameter information related to protect
Enter the data type information is given packet, detecting the parameter type information from the input packet
Parameter type information detecting means, wherein the recording control means detects the detected parameter type information.
Information, and the recording means based on the parameter information.
2. The recording according to claim 1, wherein the recording is controlled.
Recording device. 5. An information display means for displaying predetermined information.
And the information display means is the parameter information detection means or
Based on the detection result of the parameter type information detecting means
5. The method according to claim 4, wherein predetermined information is displayed.
Recording device. 6. Reproduction for reproducing data in the form of a packet
In the device, At least when the data is copy protected.
Packet to which parameter information indicating the
Playback means for playing back the data of the A parameter indicating the timed data erasure from the packet
Parameter information detecting means for detecting information, In the parameter information indicating the detected timed data deletion,
Playback control means for controlling the playback means based on the
The parameter information indicating the deletion of the timed data detected as a step.
Change the recorded content to delete the data to be played back based on the information
And a playback device. 7. The copying means for copying the data,
Parameter indicating the timed data erasure related to protect
Information and parameter information indicating the number of playback times are added.
The parameter information detecting means reproduces the data of the packet
The timed data is deleted from the data of the reproduced packet.
And the parameter information indicating the number of times of reproduction is detected.
Show a timed data erasing and reproduction count limit that has been detected me
Control of the reproducing means based on the parameter information
7. The reproducing apparatus according to claim 6, wherein the reproducing is performed. 8. The reproduction means includes means for copying the data.
Parameter indicating the type of parameter information related to protect
The packet to which the data type information is added is reproduced, and the parameter type information is detected from the reproduced packet.
A parameter type information detecting unit, wherein the reproduction control unit detects the detected parameter type information;
Information on the basis of the information and the parameter information.
7. The reproduction control for the video data is controlled.
Playback device. 9. An information display means for displaying predetermined information, wherein said information display means displays said parameter information or said parameter information.
Predetermined information based on the detection result of the meter type information detecting means.
9. The reproducing apparatus according to claim 8, wherein the information is displayed.
Place. 10. An output for outputting data in the form of a packet.
At least a description regarding copy protection of the data.
Recording period or recording period
Parameter information indicating the timed copy restriction that is a period during which
Parameter information generating means for generating information, and parameter information indicating the timed copy restriction in the packet.
Parameter information providing means for providing information, and at least parameter information indicating the timed copy restriction
Output means for outputting the assigned packet.
An output device characterized by the above-mentioned. 11. The parameter information generating means includes:
The timed copy restriction on data copy protection
And the number of copies that can be
Parameter information indicating the copy number limit to be copied, and the parameter information adding means outputs the packet to the packet.
Time-limited copy and copy
Parameter information indicating the number-of-copies limitation, and the output means outputs a time-limit
With the parameter information indicating the copy restriction and copy number of times limit
2. The apparatus according to claim 1, wherein the given packet is output.
The output device according to 0. 12. The apparatus according to claim 12, wherein said parameter information generating means includes:
The timed copy restriction on data copy protection
And the image quality level that can be copied by the recording device.
Generates parameter information indicating copy image quality restrictions
And the parameter information adding means adds the packet to the packet.
Time-limited copy and copy
Parameter information indicating the image quality limitation, and the output means outputs a time-limit
Parameter information that indicates the
2. The apparatus according to claim 1, wherein the given packet is output.
The output device according to 0. 13. A copy copy of the data in the packet.
Parameter indicating the type of parameter information related to protect
Parameter type information adding means for adding parameter type information
The output means outputs the parameter information and the parameter
Output packets with data type information.
The output device according to claim 10, wherein 14. An output for outputting data in the form of a packet.
The apparatus may include at least a portion related to copy protection of the data.
Indicates the timed data erasure that erases the specified data at the specified time.
Parameter information generating means for generating parameter information
And parameter information indicating the timed data erasure in the packet.
Parameter information providing means for providing information, and at least the parameter information indicating the timed data deletion.
Output means for outputting the assigned packet.
An output device characterized by the above-mentioned. 15. The parameter information generating means,
The timed data deletion related to data copy protection
And the number of times that can be played back by the playback device
Parameter information indicating the number of times of reproduction restriction is generated, and the parameter information adding means outputs the packet to the packet.
Delete and re-create timed data generated by parameter information generation means
Parameter information indicating the number of raw limits is given, and the output means outputs timed data by the parameter information giving means.
Adds parameter information indicating data deletion and playback limit times
15. The apparatus according to claim 14, wherein the output unit outputs the output packet.
Output device as described. 16. A copy copy of the data in the packet.
Parameter indicating the type of parameter information related to protect
Parameter type information adding means for adding parameter type information
The output means outputs the parameter information and the parameter
Output packets with data type information.
15. The output device according to claim 14, wherein 17. The data transmitted in the form of a packet is
In the data recording method for recording the data inputted,
Te, concerning the copy protection of the data, at least a time
Packet to which parameter information indicating copy
An input step of inputting a packet, and a recording step of recording data of the input packet,
A parameter indicating the timed copy restriction from the input packet
A parameter information detecting step of detecting data information, and a parameter information indicating the detected timed copy restriction.
A recording control step of controlling the recording step based on the
A data recording method. 18. The method according to claim 18 , wherein in said inputting step, said data is copied.
Parameter indicating the type of parameter information related to protection
Enter a packet with data type information
In the data type information detection process,
Data type information, and the parameter type information detected in the recording control step.
Information, and the recording step based on the parameter information.
18. The control according to claim 17, wherein
Data recording method. 19. Data for reproducing data in the form of a packet.
In the data reproduction method, the data is copy protected.
Parameter indicating at least timed data erasure
Reproducing the data of the packet with the information, and a parameter indicating the timed data erasure from the packet.
A detection step of detecting information, and parameter information indicating the detected timed data deletion.
A regeneration control step for controlling the detection step based on the
Parameter information indicating the time data deletion detected as the
Change the recorded content to delete the data to be played back based on the information
And a data reproducing method. 20. A method for copying said data in said reproducing step.
Parameter indicating the type of parameter information related to protection
The packet to which the data type information is
In the data type information detecting step, the
Parameter type information , and the parameter type information detected in the reproduction control step.
Information on the basis of the information and the parameter information.
20. The reproduction control for the image data is controlled.
On-board playback device. 21. Data for outputting data in the form of a packet.
In the data output method , at least a description regarding copy protection of the data is provided.
Recording period or recording period
Parameter information indicating the timed copy restriction that is a period during which
Parameter information generating step of generating information, and parameter information indicating the timed copy restriction in the packet.
A parameter information providing step of providing information, and at least parameter information indicating the timed copy restriction is provided.
Output step of outputting the assigned packet.
A data output method. 22. A copy copy of the data in the packet.
Parameter indicating the type of parameter information related to protect
Has a parameter type information adding step of adding data type information.
And outputting the parameter information and the parameter.
Output packets with data type information.
22. The data output method according to claim 21, wherein 23. Data for outputting data in the form of packets.
In the data output method , at least a part related to copy protection of the data is provided.
Indicates the timed data erasure that erases the specified data at the specified time.
Parameter information generation process for generating parameter information
And parameter information indicating the timed data erasure in the packet.
A parameter information providing step of providing information, and at least the parameter information indicating the timed data erasure is provided.
Output step of outputting the assigned packet.
A data output method. 24. A copy copy of the data in the packet.
Parameter indicating the type of parameter information related to protect
Has a parameter type information adding step of adding data type information.
And outputting the parameter information and the parameter.
Output packets with data type information.
24. The data output method according to claim 23, wherein: