JP2003331508A - Information recording medium, information recording/ reproducing method and information recording/ reproducing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable only a user having a reproduction right to obtain a reproduction signal subjected to signal processing for realizing scalability of main information. <P>SOLUTION: An information recording section 14 records main information acquired through an external input output section 13 and, as attached information to the main information, trigger information which includes user right information for representing the right for signal processing for realizing the scalability of the main information and adaptively changes operations of reproduction of the main information to an information recording medium 15, and an information reproduction section 16 detects the user right information included in the attached information from a reproduction signal read from the information recording medium 15, applies adaptive signal processing for realizing the scalability of the main information to the main information detected from the reproduction signal read from the information recording medium 15 on the basis of the user right information, and reproduces the main information subjected to the adaptive signal processing. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording medium on which main information composed of various contents such as music and video and additional information related to the main information is recorded, an information recording / reproducing method thereof and information recording / reproducing. Regarding the device.

[0002]

2. Description of the Related Art In recent years, digitized information of various contents such as music and video has been developed in recent years by promoting the development of multifunctional devices, high performance or high capacity processing, improvement of processing technology such as image compression technology, and Internet. Utilization is being promoted by improving the use environment by improving the processing speed and communication speed. The computerized information is, for example, a portable storage medium such as a fixed storage means such as a hard disk or a semiconductor memory provided in the device, or an optical disc, a magneto-optical disc, a magnetic disc or the like that can be carried by being inserted into and removed from the device (hereinafter referred to as information. The recording medium is collectively referred to as a recording medium) and is reproduced by an information reproducing apparatus or an information recording / reproducing apparatus (hereinafter collectively referred to as an information recording / reproducing apparatus) and recorded in an appropriate recording unit.

In general, an information recording medium has a recording area formatted into a main information recording area for recording main information and a predetermined control signal recording area for recording control signals and the like.
When the main information is recorded in the main information recording area, control information such as the recording position, time, recording method, etc. is recorded in the control signal recording area. In a conventional information recording medium, when a user reproduces main information by an information recording / reproducing apparatus, a control signal is read from a control signal recording area, and each main information is uniquely controlled and reproduced.
Therefore, in the conventional information recording medium, the main information is recorded as the information fixed based on the above conditions.

By the way, various electronic information, such as music information, video information, game software information, etc., can be accessed by a user through a communication means such as a wired or wireless communication to a predetermined provider. There is also a paid distribution service provided by doing so. Such an information distribution system is provided with a personal computer or a personal digital assistant (PDA: Personal Digital A) connected to the user from the provider side through a predetermined procedure.
ssistant) or the requested content information is supplied to a terminal device such as a mobile phone and recorded in an appropriate information recording medium. The information recording medium records the distributed content as fixed information in a predetermined format.

On the other hand, contents such as music information and video information are recorded on, for example, a CD-R (Compact Disc-Recordable) and provided to users. The CD-R can also be used, for example, by using the above-described information distribution system and additionally recording a new song that is not recorded on the album CD-R of a singer and additionally records it. The CD-R records music information, video information, and the like as fixed information, but it is possible to change the reproduction order and reproduce them arbitrarily by a setting operation on the information recording / reproducing apparatus side based on address information or the like. It Of course, the CD-R is regulated with respect to the control signal recorded in the control signal recording area, and it is not possible to record an arbitrary control signal for automatically selecting the reproduction order, for example.

[0006]

By the way, in the information recording / reproducing system for recording / reproducing information via the information recording medium such as the optical disc, the magnetic disc and the magneto-optical disc as described above, the recording on the information recording medium is performed. A predetermined recording format in which a recording area for management information for managing positions and a recording area for main information are individually secured is used, and additional information related to the main information, such as main information, is used. When recording identification information, link information, history information, etc., the recording area for main information and the recording area for additional information are generally reserved in advance as separate recording areas, or Since a new recording area for additional information was secured each time the main information was recorded, the main information composed of various contents such as music and video was recorded. When recording additional information related to the main information on the information recording medium, it is necessary to separately secure a recording area for the main information and a recording area for the additional information, and the recording area for the main information is There was a problem that it would decrease.

Further, in the conventional information recording / reproducing system, since plural pieces of information are not integrated and recorded, it is not possible to adaptively change the operation of the information recording / reproducing apparatus according to the defined information. could not. For example,
Considering a music CD-R that has been put into practical use as an information recording medium for recording and reproducing music, the information recording medium has a common specification, and the main information, that is, additional information related to the written music data, for example, identification information. Is scarce. Therefore, it is difficult to adaptively change the recording / reproducing method for each information recording medium or for each music. Also, for the same reason, it cannot be said to be perfect from the viewpoint of copyright protection / utilization.

Therefore, in view of the conventional problems as described above, an object of the present invention is to provide an information recording medium capable of obtaining a reproduced signal subjected to signal processing for realizing scalability of main information only by an authorized user. An object is to provide an information recording / reproducing method and an information recording / reproducing device.

[0009]

An information recording medium according to the present invention includes at least user right information indicating a right of signal processing for realizing scalability of main information, and adaptively reproduces the main information. The trigger information to be changed is recorded as additional information.

Further, the information recording method according to the present invention has a content acquisition step of acquiring content and an information recording step of recording the acquired content as main information on the information recording medium together with the additional information of the main information. In the information recording step, trigger information including user authority information indicating authority of signal processing for realizing scalability of the main information and adaptively changing the operation of reproducing the main information is added to the information recording medium as the additional information. It is characterized by recording.

Also, the information reproducing method according to the present invention includes user authority information indicating authority of signal processing for realizing scalability of the main information, and trigger information for adaptively changing the operation of reproducing the main information. An information reproducing method for reproducing the main information from an information recording medium recorded as additional information of the main information, the main information detecting step of detecting the main information from a reproduction signal read from the information recording medium, and the information. A user authority information detecting step of detecting user authority information included in the additional information from a reproduction signal read from a recording medium;
An adaptive processing step of subjecting the main information detected in the main information detecting step to signal processing that realizes scalability of the main information, based on the user authority detected in the user authority information detecting step; A main information reproduction processing step of reproducing the main information subjected to the adaptive processing in the processing step.

Further, the information recording / reproducing method according to the present invention is
A content acquisition step of acquiring content, and including the user authority information indicating the authority of signal processing for realizing the scalability of the main information with the acquired content as main information, adaptively changing the operation of reproducing the main information. Trigger information as the additional information of the main information, an information recording step of recording the main information and the additional information in an information recording medium, a main information detecting step of detecting the main information from a reproduction signal read from the information recording medium, A user authority information detecting step of detecting user authority information included in the additional information from a reproduction signal read from the information recording medium; and the main information detecting step based on the user authority detected in the user authority information detecting step. For the main information detected in Characterized in that it has an adaptive process steps for performing signal processing for realizing scalability broadcast, and a main information reproduction processing step of reproducing the main information subjected to the adaptive processing at the adaptive processing steps.

Further, the information recording apparatus according to the present invention comprises content acquisition means for acquiring the content, and information recording means for recording the acquired content as main information in the information recording medium together with the additional information of the main information,
The information recording means includes user authority information indicating authority of signal processing for achieving scalability of main information, and trigger information for adaptively changing the reproduction operation of the main information is recorded on the information recording medium as the additional information. It is characterized by doing.

Also, the information reproducing apparatus according to the present invention includes user authority information indicating authority of signal processing for realizing scalability of the main information, and trigger information for adaptively changing the operation of reproducing the main information. An information reproducing apparatus for reproducing the main information from an information recording medium recorded as additional information of the main information, the main information detecting means detecting the main information from a reproduction signal read from the information recording medium, and the information. User authority information detecting means for detecting user authority information contained in the additional information from the reproduction signal read from the recording medium, and the main information detecting means for detecting based on the user authority detected by the user authority information detecting means. Signal processing that realizes scalability of the main information And be adaptive processing means, characterized in that it comprises a main information reproduction processing means for reproducing the main information subjected to the adaptive processing by the adaptive processing means.

Further, the information recording / reproducing apparatus according to the present invention includes content acquisition means for acquiring content, and user authority information indicating the authority of signal processing for realizing the scalability of the main information by using the acquired content as main information. And an information recording unit for recording the main information and the additional information on an information recording medium, using the trigger information for adaptively changing the reproduction operation of the main information as the additional information of the main information, and reading from the information recording medium. The main information detecting means for detecting main information from the reproduced signal, the user authority information detecting means for detecting user authority information contained in the additional information from the reproduced signal read from the information recording medium, and the user authority information. It is detected by the main information detection means based on the detected user authority. The main information is provided with adaptive processing means for performing signal processing for realizing scalability of the main information, and main information reproduction processing means for reproducing the main information subjected to the adaptive processing by the adaptive processing means. And

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings.

The present invention is applied to an information recording / reproducing apparatus 10 having a structure as shown in FIG. 1, for example.

The information recording / reproducing apparatus 10 includes an operating section 1
1, a control unit 12 connected to the operation unit 11, an external input / output unit 13 connected to the control unit 12, an information recording unit 14
The information reproducing unit 16, the information recording unit 14, and the information reproducing unit 16 include an information recording medium 15 on which main information and additional information related to the main information are recorded and / or reproduced.

The operation unit 11 is composed of a user interface for performing an operation, a display device showing the state of the system, and the like. The operation unit 11 displays the system state and changes the state of the user interface according to the control signal input from the control unit 12, and outputs an operation signal according to the user's operation to the control unit 12.

The control unit 12 includes an operation signal input from the operation unit 11, an external input / output unit 13, an information recording unit 14,
A control signal is generated based on the status signal input from the information reproducing unit 16, and is output to the operation unit 11, the external input / output unit 13, the information recording unit 14, and the information reproducing unit 16.

The external input / output unit 13 is an interface with an external device and exchanges signals with the outside according to a control signal input from the control unit 12. External input / output unit 13
Outputs a signal input from the outside to the information reproducing unit 16, and outputs a signal input from the information reproducing unit 16 to the outside. Also, a status signal indicating the state of the external input / output unit 13 is output to the control unit 12.

The information recording unit 14 records the main information and the additional information input from the information reproducing unit 16 on the information recording medium 15 according to the control signal input from the control unit 12.
Also, a status signal indicating the state of the information recording unit 14 is output to the control unit 22.

The information reproducing section 16 reads the main information and the additional information from the information recording medium 15 and the external input / output section 13 according to the control signal inputted from the control section 12, and the main information is read according to the read additional information. Adaptive processing is performed, and additional information is updated. After the adaptation process, the main information can be reproduced, and the main information and the additional information are recorded in the information recording unit 14 and the external input / output unit 13.
Output to. Also, a status signal indicating the state of the information reproducing unit 16 is output to the control unit 12.

Next, the details of each part will be described. Each unit in the block diagram used in the following description exchanges a control signal and a status signal with the control unit 12, but this is omitted because the diagram becomes complicated.

An example of the structure of the external input / output unit 13 is shown in the block diagram of FIG.

The external input / output unit 13 of the configuration example shown in FIG.
Is composed of a communication unit 31 and a buffer unit 32.

In the external input / output unit 13, the communication unit 3
1 has a function of communicating with an external network 33, for example, the Internet network, and exchanges signals with the external network 33. Further, the buffer unit 32 is prepared in consideration of the influence of a time lag occurring when signals are exchanged between the outside and the inside, and has a function of temporarily storing the input signal and outputting it.

Further, another block diagram of the external input / output unit 13 is shown in the block diagram of FIG.

The external input / output unit 13 of the configuration example shown in FIG.
Is composed of an external device connecting section 41 and a buffer section 42.

In the external input / output unit 13, the external device connection unit 41 has a function of connecting and communicating with an external device, for example, a portable recording / reproducing apparatus, and exchanges signals with the external device 43. The buffer unit 42 is prepared in consideration of the influence of a time shift that occurs when signals are exchanged between the outside and the inside, and has a function of temporarily storing and outputting the input signal.

Here, the external input / output unit 13 is the communication unit 31.
It is also possible to have a configuration having a plurality of external device connection sections 41,
A configuration having a combination of the communication unit 31 and the external device connection unit 41 is also possible.

Next, a block diagram of FIG. 4 shows an example of the configuration of the information recording section 14.

The information recording section 14 shown in FIG. 4 comprises a main information recording section 51 and an additional information recording section 52.

In the information recording unit 14, the main information recording unit 51 stores the input main information in the information recording medium 1.
It records in the main information recording area of No. 5. Further, the additional information recording unit 52 stores the input additional information in the information recording medium 1 described above.
5 is recorded in the additional information recording area.

In this information recording / reproducing apparatus 10, as the additional information, for example, as shown in FIG. 5, identification information belonging to the information recording medium 15 and identification information belonging to the main information are included.
Trigger information for adaptively changing the recording and / or reproducing operation of the main information is recorded.

The identification information belonging to the information recording medium 15 includes identification information of the information recording medium 15, user authority information such as grade identification information and record / updability information, owner identification information and the like.

Also, the identification information belonging to the main information includes content identification information, content copyright information such as artist and company identification information, and content quality information.

The identification information belonging to the main information includes content identification information, content copyright information such as identification information of artists and companies, content quality information, and the like.

Here, the user authority information is information for controlling the signal processing added when reproducing the content recorded as the main information on the information recording medium 1.

In this information recording / reproducing apparatus 10,
The main information and the additional information are recorded in the information recording medium 15 according to the procedure shown in the flowchart of FIG.

That is, in the flowchart of FIG. 6, in step S1, the external input / output unit 13
The content (main information) is acquired from the external device 43.

In the next step S2, the above step S1
In the information recording unit 51, the content obtained in step 1 is recorded as main information in the main information recording area of the information recording medium 15.

In step S3, the user selects a signal process to be added at the time of reproduction from the signal processes that can be processed by the reproducing device.

Then, in step S4, the information recording unit 1
In the additional information recording unit 52 of No. 4, the user authority information to which the signal processing selected in step S3 can be added is recorded in the additional information recording area of the information recording medium 15 as the additional information in the additional information recording unit 52.

Next, FIG. 7 showing a configuration example of the information reproducing section 16.
Is shown in the block diagram of.

The information reproducing section 16 shown in FIG. 7 comprises a main information detecting section 61, an additional information information detecting section 62, an adaptive processing section 63, a reproduction processing section 64 and the like.

In the information reproducing section 16, the main information detecting section 61 reads out the main information recorded in the main information recording area of the information recording medium 15 and the adaptive processing section 6
Supply to 3.

Further, the additional information information detecting section 62 reads out the additional information recorded in the additional information recording area of the information recording medium 15 and supplies it to the adaptive processing section 63.

The adaptive processing unit 63 is detected by the main information detecting unit 61 in accordance with the additional information detected by the additional information detecting unit 62 and / or the additional information input from the external input / output unit 13. Adaptive processing is performed on the main information and / or the main information input from the external input / output unit 13 and the processed main information is output to the reproduction processing unit 64 and the information recording unit 14. The adaptation processing unit 63 also outputs the additional information that has been input to the information recording unit 14 as it is or after updating it. It is also possible to output the main information and the additional information of the processing result to the external input / output unit 13.

Further, the reproduction processing unit 64 generates a reproduction signal from the main information which has been adaptively processed by the adaptive processing unit 63.

In this information recording / reproducing apparatus 10,
The main information and the additional information are reproduced from the information recording medium 15 according to the procedure shown in the flowchart of FIG.

That is, in the flowchart of FIG. 8, in step S11, the user specifies the content to be reproduced from the content recorded on the information recording medium 15.

In the next step S12, the above step S
The content specified by 11 is read as main information from the main information recording area of the information recording medium 15 by the main information detecting section 61 of the information reproducing section 16.

In the next step S13, the information reproducing section 16
The information detecting section 52 reads the user authority information of the signal processing corresponding to the content from the additional information recording area of the information recording medium 15.

In the next step S14, the information reproducing section 16
The adaptive processing unit 63 performs signal processing with user authority on the content.

Then, in the next step S15, in the reproduction processing section 64 of the information reproducing section 16, the above-mentioned step S1 is executed.
In step 4, the content subjected to the adaptive signal processing is reproduced.

As described above, in this information recording / reproducing apparatus 10, when recording the content on the recordable empty information recording medium 15, the signal processing to be added at the time of reproducing the content is written as the trigger information. At the time of reproduction, it is possible to present the reproduction signal always with the registered signal processing added. As a result, the user can obtain a signal of higher quality than the signal written as the main information. Specifically, the movie source 2
It is possible to add processing for correcting 3 pulldown, noise removal, spatial resolution creation, temporal resolution creation, etc. to each content, and scalability can be realized. In the past, similar processing was performed on all contents, but this allows signal processing for each individual content.

Here, in this information recording / reproducing apparatus 10,
When reproducing the content (main information) recorded on the information recording medium 15, if the user authority information defining the signal processing to be added at the time of reproducing the content is not written in the trigger information, adaptive processing is performed at the time of reproduction. I can't. However, it becomes possible to add the user authority information to the trigger information and reproduce the content by performing the billing process via the network. Thus, by restricting the users who reproduce the content and performing the charging process each time the user who wants to reproduce the content is added, it is possible to prevent unauthorized copying. If the content identification information is written as the trigger information at the same time as the user identification information, the users who can reproduce each content can be managed, and the copyright of the content can be strictly protected.

Next, an information distribution / billing system for carrying out information distribution and billing processing to the information recording / reproducing apparatus 10 will be described with reference to FIGS. 9 to 11.

In the information recording / reproducing apparatus 10 using the above-mentioned information recording medium 15, as shown in FIG. 9, the information recording / reproducing apparatuses 10A to 10N owned by a large number of users connect the network 33 by the respective external input / output units 13. Through the external information distribution organization 3 and the external charge processing organization 4 and other external organizations 1
An information distribution system 100 that receives a distribution service of contents such as music albums and movie programs, and other appropriate new main information or a part of information by being connected with.

FIG. 10 is a flowchart showing a rough processing procedure when reproducing the contents recorded on the information recording medium 15 in the information distribution system 100.

In the flowchart of FIG. 10, in step S21, the operator of the information recording / reproducing apparatus 10 is
The external input / output unit 13 is connected to the external institution 1 via the network 33, and user identification information and authentication information such as a password are transmitted to the external institution 1 to apply for use.

In the next step S22, the external engine 1
From the database, the operator of the information recording / reproducing apparatus 10 determines whether or not the service can be used, and transmits the result to the information recording / reproducing apparatus 10.

In the next step S23, the information recording / reproducing apparatus 10 determines whether or not the service of the external organization 1 is available.

If the service of the external institution 1 is available in the above step S23, in the next step S24,
The operator of the information recording / reproducing apparatus 10 transmits the designation information of the content to be recorded on the information recording medium 15 to the external organization 1.

In the next step S25, the external engine 1
Performs charging processing for the requested content and transmits the content to the information recording / reproducing apparatus 10.

In the next step S26, the information recording / reproducing apparatus 10 receives the content via the external input / output unit 13, and the main information recording unit 51 of the information recording unit 14 causes the main information recording area of the information recording medium 15 to be recorded. The content is recorded as main information.

In the next step S27, the information recording / reproducing apparatus 10 asks the operator whether to add signal processing to the recorded content.

If the operator desires to add signal processing in step S27, the following step S2 is performed.
At 8, the operator of the information recording / reproducing apparatus 10 selects the signal processing to be added, and issues a request from the external input / output unit 13 to the external organization 1 via the network 33.

In the next step S29, the external engine 1
Performs an accounting process for the requested signal processing, and instructs the information recording / reproducing apparatus 10 to authorize the signal processing.

In the next step S30, the information recording / reproducing apparatus 10 receiving the instruction in the step S29 causes the additional information recording section 52 of the information recording section 14 to add the user authority information of the selected signal processing to the trigger information, that is, the additional information. Information is recorded in the additional information recording area of the information recording medium 15.

If the service of the external institution 1 is not available in step S23, the operator of the information recording / reproducing apparatus 10 is notified to that effect and the process is terminated.

If the operator does not desire to add the signal processing in step S27,
Without adding the signal processing, the main information recording area of the information recording medium 15 is recorded with only the content as the main information, and the processing ends.

In the information distribution system 100, in the initial state, only the content has been recorded, and the signal processing to be added as the user authority information to the content recording type information recording medium 15 in which the information regarding the signal processing is not recorded. Will be charged according to the type and number of. In addition, in the initial state, for the information recording medium 15 in which neither the content nor the information about the signal processing is recorded, acquisition of the content is charged. Further, the fee is charged depending on the type and number of signal processing added as user authority information. In this way, by charging for signal processing, once you sell the content once, you get out of the business model where you can not earn profit, and create a business model where you can expect profit regularly even after selling the content. Can be built.

Here, in the information recording / reproducing apparatus 10, the processing for correcting the 23 pulldown of the movie source and the processing such as noise removal, spatial resolution creation, temporal resolution creation, etc. are processed to be optimum for each content. As the trigger information, when recording the content in an empty recordable trigger device, a parameter indicating the characteristic of the content, that is, characteristic amount information can be written.

In this case, the information recording / reproducing apparatus 10 records the main information and the additional information on the information recording medium 15 according to the procedure shown in the flowchart of FIG.

That is, in the flowchart of FIG. 11, in step S31, the external input / output unit 13 acquires the content (main information) from the external device 43.

In the next step S32, the above step S
The content acquired at 31 is recorded in the main information recording area of the information recording medium 15 as the main information in the information recording unit 51.

In step S33, the user selects the signal processing to be added at the time of reproduction from the signal processing that can be processed by the reproducing device.

In the next step S34, the information recording unit 14
In the additional information recording unit 52, the parameter of the signal processing selected in step S33, that is, the characteristic amount information is recorded as additional information in the additional information recording area of the information recording medium 15.

In the next step S34, the additional information recording section 52 of the information recording section 14 records all the feature amount information of the signal processing selected in the above step S33 as additional information in the additional information recording area of the information recording medium 15. It is determined whether or not.

If it is determined in step S35 that there is characteristic amount information to be recorded, the process returns to step S34 and recording of the characteristic amount information is repeated.

If it is determined in step S35 that all the characteristic amount information has been recorded, the process ends.

Further, when the main information is reproduced from the information recording medium 15 in which the parameter of the signal processing, that is, the characteristic amount information is recorded as the additional information of the main information in this way, the information recording / reproducing apparatus 10 shown in FIG. The reproduction process is performed according to the procedure shown in the flowchart.

That is, in the flowchart of FIG. 12, in step S41, the user, that is, the operator of the information recording / reproducing apparatus 10 specifies the content to be reproduced from the contents recorded on the information recording medium 15.

In the next step S42, the above step S
The content designated by 41 is read as main information from the main information recording area of the information recording medium 15 by the main information detecting section 61 of the information reproducing section 16.

In the next step S43, the information reproducing section 16
The information detecting section 52 reads the parameter of the signal processing corresponding to the content, that is, the feature amount information from the additional information recording area of the information recording medium 15.

In the next step S44, the information reproducing section 16
The adaptive processing unit 63 of (1) reflects the parameter, that is, the feature amount information, and performs optimum signal processing on the content.

In the next step S45, it is determined whether or not the optimum signal processing is performed on the content by reflecting all the characteristic amount information recorded in the additional information recording area of the information recording medium 15.

If it is determined in step S45 that there is characteristic amount information to be reflected, the process returns to step S44, and the adaptive processing unit 63 repeats the adaptive processing for reflecting the characteristic amount information.

When it is determined in step S35 that the optimum signal processing is performed on the content by reflecting all the feature amount information, in the next step S46, the reproduction processing unit 64 of the information reproducing unit 16 is performed. Thus, the content subjected to the adaptive signal processing in step S44 is reproduced.

As described above, in this information recording / reproducing apparatus 10, when recording a content on the recordable blank information recording medium 15, the parameter of the signal processing to be added when reproducing the content, that is, the feature amount information is used as the trigger information. By writing, it is possible to always present a high-quality reproduced signal which has been subjected to the registered signal processing during reproduction.

In the information distribution system 100 described above, when the method of writing the parameter of the signal processing to be added at the time of reproducing the content, that is, the feature amount information as the trigger information is adopted, the above-mentioned flowchart of FIG. 10 is used. In step S29, the external institution 1 performs billing processing for the requested signal processing, and instead of instructing the information recording / reproducing apparatus 10 to authorize the signal processing, in response to the requested signal processing. Then, the charging process is performed, and the parameter of the selected signal processing, that is, the feature amount information is transmitted to the information recording / reproducing apparatus 10.
Then, in the next step S30, the information recording / reproducing apparatus 10 causes the additional information section 52 of the information recording section 14 to
The parameter of the signal processing, that is, the characteristic amount information sent from the external organization 1 is recorded in the additional information recording area of the information recording medium 15 as the trigger information, that is, the additional information.

Here, in the embodiment described above, various types of media such as magnetic tape, optical disk, magnetic disk, magneto-optical disk, semiconductor, etc. can be used as the information recording medium 15.

Further, in this embodiment, the information recording unit 1
Although the present invention is applied to the information recording / reproducing apparatus 10 including the information reproducing unit 4 and the information reproducing unit 16, the information reproducing apparatus omitting the information reproducing unit 16 and the information reproducing apparatus omitting the information recording unit 14 are configured separately. Alternatively, the information recording / reproducing system may be constructed by the information recording device and the information reproducing device.

Further, in this embodiment, an information recording area for main information and an information recording area for additional information are provided on the information recording medium 15, and the main information and the additional information are recorded in separate recording areas. However, as described below, the main information and the additional information may be multiplexed and recorded on the information recording medium 15.

A block diagram of FIG. 13 shows a concrete example of the structure of the information recording section 14 for multiplexing the main information and the additional information and recording them on the information recording medium 15.

The information recording section 14 of the configuration example shown in FIG.
Is a main information processing unit 151 to which main information is input,
Additional information processing unit 152 to which additional information related to the main information is input, multiplex recording to which main information processed by the main information processing unit 151 and additional information processed by the additional information processing unit 152 are supplied. Processing unit 15
It consists of 6.

In the information recording unit 14, the main information processing unit 151 performs main information processing for recording the main information on the information recording medium 15 as a recording mark, and the main information is the main information encoded data. And is supplied to the multiplex recording processing unit 156.

Further, the additional information processing section 152 multiplexes the additional information on the main information as the statistically detectable change information of the recording mark recorded on the information recording medium 15 and records it on the information recording medium 15. Additional information processing is performed, and the additional information is converted into statistically detectable change information of the recording mark recorded on the information recording medium 15 and supplied to the multiplex recording processing unit 156.

The additional information processing unit 152 includes an additional information encoding unit 153 to which the additional information is input, a statistical feature amount conversion unit 154 to which the additional information encoded data is supplied from the additional information encoding unit 153, Statistical feature amount conversion unit 154
The statistical feature amount determination unit 15 to which the statistical feature amount is supplied from
It consists of 5.

Here, as the statistically detectable change information of the recording mark recorded on the information recording medium 15, for example, the above-mentioned recording obtained by statistically processing the jitter component of the shape or position of the recording mark. It is possible to use the feature amount related to the position of the peak of the jitter frequency of the mark shape or position.

The statistical feature amount conversion unit 154 converts the additional information encoded data supplied from the additional information encoding unit 153 into a feature amount relating to the position of the peak of the jitter frequency.

Then, in the statistical feature quantity determining unit 155,
From the statistical characteristic amount supplied from the statistical characteristic amount conversion unit 154, the jitter amount at the time of actually recording as the statistically detectable change information of the recording mark recorded on the information recording medium 15 is determined, Information on the determined jitter amount is supplied to the multiplex recording processing unit 156 as, for example, write timing control information.

For determining the jitter amount, a table method for converting the encoded data into the jitter amount may be adopted.

The multiplexed recording processing unit 156 converts the additional information processed by the additional information processing unit 152 into the main information processed by the main information processing unit 151.
A process for recording the main information and the additional information on the information recording medium 15 by multiplexing them as statistically detectable change information of the recording mark indicating the main information, and determining the statistical feature amount. The jitter amount information supplied from the unit 155 is, for example, write timing control information,
The main information encoded data encoded by the main information processing section 151 is actually recorded on the information recording medium 15.

In the information recording section 14 having such a structure, additional information is embedded as information on the peak position of the jitter frequency at the position of the record mark that can be statistically detected according to the procedure shown in the flowchart of FIG. Medium 1
Record at 5.

That is, in recording the additional information, the information recording unit 14 first sets the recording method of the additional information in the header (step S41). Next, the additional information coded data encoded by the additional information processing unit 152 is converted into, for example, a feature amount related to the position of the peak of the jitter frequency, that is, a statistical feature amount in the statistical feature amount conversion unit 154 (step S42). Further, based on the statistical feature amount provided by the statistical feature amount conversion unit 154, the statistical feature amount determination unit 155 determines the jitter amount when the recording mark is actually recorded by the multiplex recording processing unit 15.
6 is set (step S43). Then, the multiplexed recording processing unit 156 records the main information encoded data encoded by the main information processing unit 151 on the information recording medium 15 (step S44).

The position of the recording mark M recorded on the information recording medium 15 in this manner changes according to the jitter amount information, as shown by the broken line in FIG.

Therefore, for example, as shown in FIG. 16A, the peak position of the jitter frequency statistically detected from the recording mark recorded at the regular recording timing is "0", and the peak position of FIG. As shown in (B), the peak position of the jitter frequency statistically detected from the recording mark recorded at the recording timing advanced from the regular recording timing is "1", and further, in (C) of FIG. As shown
By defining the peak position of the jitter frequency statistically detected from the recording mark recorded at the recording timing delayed from the regular recording timing as “−1”, the statistically detectable recording mark position The additional information can be indicated by the three values given at the peak position of the jitter frequency.

The information reproducing section 14 in this information recording / reproducing apparatus 10 is, as shown in the block diagram of FIG.
An information separation unit 161 that reads reproduction data from the information recording medium 15 and separates it into main information and additional information, and an adaptation processing unit 162 that performs an adaptation process according to the additional information on the main information separated by the information separation unit 161. The reproduction processing unit 163 generates a reproduction signal from the main information subjected to the adaptation processing by the adaptation processing unit 162.

In the information reproducing section 14 shown in the block diagram of FIG. 17, the information separating section 161 has the information recording medium 15
The information recorded in (1) is read out, separated into main information and additional information, and output to the adaptive processing unit 162. The adaptive processing unit 162 also receives the main information input from the information separating unit 161 and the external input according to the additional information input from the information separating unit 161 and / or the control information input from the external input / output unit 13. The input information input from the output unit 13 is adaptively processed, and the main information as a processing result is output to the information reproduction processing unit 164. Further, the adaptive processing unit 162 outputs the input additional information as it is or after updating it. Then, the reproduction processing unit 163
Generates a reproduction signal from the main information input from the adaptive processing unit 162.

Here, a concrete configuration example of the information separating section 161 is shown in the block diagram of FIG.

The information separating unit 16 of the configuration example shown in FIG.
Reference numeral 1 denotes a data reading unit 171 that reads reproduction data from the information recording medium 15, and this data reading unit 171.
The data analysis unit 172 to which the reproduced data read by the above is supplied, the main information decoding processing unit 173 to which the main information component is supplied from this data analysis unit 172, and the peak position detection to which the jitter information component is supplied from the data analysis unit 172. A unit 174, a statistical feature amount conversion unit 175 to which the peak position feature amount is supplied from the peak position detection unit 174, and an additional information decoding processing unit 176 to which additional information encoded data is supplied from the statistical feature amount conversion unit 175. Consists of.

The information separating unit 161 reads the information recorded on the information recording medium 15 and separates it into main information and additional information by the processing according to the procedure shown in the flowchart of FIG. Supply.

That is, the reproduction data is read from the information recording medium 15 by the data reading section 171 (step S51).

Then, the data analysis section 172 separates the reproduced data into a main information component and a jitter information component (step S52).

Next, the main information decoding processing section 173 decodes the main information by decoding the main information component separated from the reproduction data by the data analyzing section 172 (step S53).

In the peak position detector 174,
With respect to the jitter information component separated from the reproduction data by the data analysis unit 172, a jitter statistic is obtained by statistical processing (step S54), and the feature quantity at the peak position of the obtained jitter statistic is detected as statistical feature quantity information. Yes (step S55). Here, the jitter statistic is
The frequency of the phase difference information between the RF signal and the clock is statistically obtained.

Next, the statistical feature amount conversion unit 175 converts the statistical feature amount information detected by the peak position detection unit 174 into additional information coded data (step S56).

Then, the additional information decoding processing unit 176 decodes the additional information by performing a decoding process on the additional information encoded data converted by the statistical feature amount conversion unit 175 (step S57).

Further, in the adaptive processing section 162 of the information recording / reproducing apparatus 10, the main information separated from the reproduction data in the information separating section 161 is realized in scalability, authority is added, another function is added, specialization processing or The information separation unit 161 performs adaptive processing such as compression processing.
In step S1, the additional information separated from the reproduced data is used.

In the information recording / reproducing apparatus 10, the additional information related to the main information is used as the statistically detectable change information of the recording mark recorded as the main information composed of various contents such as music and video. Since the information is multiplexed and recorded on the information recording medium 15, it is possible to record additional information related to the main information together with the main information including various contents such as music and video without reducing the recording area for the main information.

[0124]

As described above, according to the present invention,
When recording content on an empty recordable information recording medium, signal processing that realizes scalability that is desired to be added when reproducing the content, for example, processing to correct 23 pulldown of movie source, noise removal, spatial resolution creation, temporal resolution By writing the user authority information indicating the authority of the signal processing that realizes scalability such as creation as the trigger information, the reproduced signal can be always presented with the registered signal processing added at the time of reproduction. As a result, the authorized user can obtain a signal of higher quality than the signal written as the main information.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration example of an information recording / reproducing apparatus to which the present invention has been applied.

FIG. 2 is a block diagram showing a configuration example of an external input / output unit in the information recording / reproducing apparatus.

FIG. 3 is a block diagram showing another configuration example of an external input / output unit in the information recording / reproducing apparatus.

FIG. 4 is a block diagram showing a configuration example of an information recording unit in the information recording / reproducing apparatus.

FIG. 5 is a diagram showing the content of trigger information recorded as additional information related to main information on an information recording medium by the information recording / reproducing apparatus.

FIG. 6 is a flowchart showing a procedure of recording processing by the information recording unit.

FIG. 7 is a block diagram showing a configuration of an information reproducing section in the information recording / reproducing apparatus.

FIG. 8 is a flowchart showing a procedure of reproduction processing by the information reproducing unit.

FIG. 9 is a block diagram showing a configuration of an information distribution system constructed by using a plurality of the information recording / reproducing devices.

FIG. 10 is a flowchart showing a procedure of a main information reproducing process by the information recording / reproducing apparatus in the information distribution system.

FIG. 11 is a flowchart showing a processing procedure for writing a parameter representing a characteristic of content, that is, characteristic amount information, as additional information of main information in the information recording / reproducing apparatus, to the information recording medium.

FIG. 12 is a flowchart showing a processing procedure when reproducing the main information from the information recording medium in which the parameter indicating the characteristic of the content, that is, the characteristic amount information is recorded as the additional information of the main information in the information recording / reproducing apparatus.

FIG. 13 is a block diagram illustrating a specific configuration example of an information recording unit that multiplexes main information and additional information and records the multiplexed information on an information recording medium.

FIG. 14 is a flowchart showing a procedure of recording processing of main information and additional information by the information recording unit.

FIG. 15 is a diagram schematically showing changes in the positions of recording marks recorded on the information recording medium by the information recording unit.

FIG. 16 is a diagram schematically showing a relationship between a peak position of jitter frequency statistically detected from a recording mark recorded on the information recording medium and additional information.

FIG. 17 is a block diagram showing a configuration of an information reproducing section for reproducing main information and additional information from an information recording medium in which main information and additional information are multiplexed and recorded.

FIG. 18 is a block diagram showing a specific configuration example of an information separating unit in the information reproducing unit.

FIG. 19 is a flowchart showing a procedure of a process of separating main information and additional information in the information separating unit.

[Explanation of symbols]

10 information recording / reproducing apparatus, 11 operation unit, 12 control unit, 13 external input / output unit, 14 information recording unit, 15 information recording medium, 16 information reproducing unit, 31 communication unit, 32
Buffer unit, 33 network, 41 external device connection unit, 42 buffer unit, 43 external device, 51 main information recording unit, 52 additional information information recording / outputting unit, 61 main information detecting unit, 62 additional information information detecting unit, 63 adaptive processing Unit, 64 reproduction processing unit, 151 main information processing unit, 152 additional information processing unit, 153 additional information encoding unit, 154 statistical feature amount conversion unit, 155 statistical feature amount determination unit, 156 multiplex recording processing unit, 161 Information separation unit 162 adaptive processing unit 163 reproduction processing unit 16
4 information reproduction processing unit, 171 data reading unit, 17
2 data analysis unit, 173 main information decoding processing unit, 1
74 peak position detection unit, 175 statistical feature amount conversion unit, 176 additional information decoding processing unit

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Takashi Sawao, the inventor             6-735 Kita-Shinagawa, Shinagawa-ku, Tokyo Soni             -Inside the corporation (72) Inventor Shizuo Chikaoka             6-735 Kita-Shinagawa, Shinagawa-ku, Tokyo Soni             -Inside the corporation (72) Inventor Naoki Fujiwara             6-735 Kita-Shinagawa, Shinagawa-ku, Tokyo Soni             -Inside the corporation F-term (reference) 5C053 FA23 GB06 GB17 HA40 JA21                       LA06                 5D044 AB05 AB07 BC01 BC02 CC04                       DE03 DE12 DE49 DE50 GK12                       HL08

Claims (18)

[Claims] 1. Trigger information, which includes at least user authority information indicating authority of signal processing for realizing scalability of main information, and which adaptively changes a reproduction operation of the main information, is recorded as additional information. An information recording medium characterized by: 2. The information recording medium according to claim 1, wherein a signal processing parameter is included as user authority information indicating the authority of the signal processing. 3. A content acquisition step of acquiring content, and an information recording step of recording the acquired content as main information in an information recording medium together with additional information of the main information, wherein the information recording step comprises: Information recording characterized by including user authority information indicating the authority of signal processing for realizing the scalability of the above, and trigger information for adaptively changing the reproduction operation of the main information as the additional information in the information recording medium. Method. 4. The information recording method according to claim 3, wherein a signal processing parameter is included as the user authority information indicating the authority of the signal processing. 5. The information recording according to claim 3, wherein, in the information recording step, consideration payment processing is performed when obtaining user authority information indicating authority of signal processing for realizing scalability of the main information. Method. 6. Trigger information that adaptively changes the reproduction operation of the main information is recorded as additional information of the main information, including user authority information indicating the authority of signal processing for realizing scalability of the main information. An information reproducing method for reproducing the main information from an information recording medium, comprising: a main information detecting step of detecting main information from a reproducing signal read from the information recording medium; and a reproducing signal read from the information recording medium. Based on the user authority information detecting step of detecting the user authority information included in the additional information, and the main information detected in the main information detecting step based on the user authority detected in the user authority information detecting step, An adaptive processing step for performing signal processing that realizes scalability of the main information, And a main information reproducing processing step of reproducing the main information subjected to the adaptive processing in the adaptive processing step. 7. The information reproducing method according to claim 6, wherein a signal processing parameter is included as the user authority information indicating the authority of the signal processing. 8. A content acquisition step of acquiring content, including the acquired content as main information, including user authority information indicating authority of signal processing for realizing scalability of the main information, and performing an operation of reproducing the main information. An information recording step of recording the main information and the additional information in an information recording medium by using the trigger information adaptively changed as the additional information of the main information, and a main detecting the main information from the reproduction signal read from the information recording medium. An information detecting step, a user authority information detecting step of detecting user authority information included in the additional information from a reproduction signal read from the information recording medium, and based on the user authority detected in the user authority information detecting step, Corresponds to the main information detected in the main information detection step above. And information recording characterized by having an adaptive processing step for performing signal processing for realizing scalability of the main information and a main information reproducing processing step for reproducing the main information subjected to the adaptive processing in the adaptive processing step. How to play. 9. The information recording / reproducing method according to claim 8, wherein a signal processing parameter is included as the user authority information indicating the authority of the signal processing. 10. The information recording according to claim 8, wherein in the information recording step, consideration payment processing is performed when user authority information indicating authority of signal processing for realizing scalability of the main information is obtained. How to play. 11. A content acquisition means for acquiring content, and an information recording means for recording the acquired content as main information in an information recording medium together with additional information of the main information, the information recording means An information recording apparatus, characterized in that trigger information for adaptively changing a reproduction operation of the main information is recorded as the additional information on an information recording medium, the trigger information including user authority information indicating signal processing authority for achieving scalability. . 12. The information recording apparatus according to claim 11, wherein a signal processing parameter is included as the user authority information indicating the authority of the signal processing. 13. The information recording apparatus according to claim 11, wherein the information recording means performs a payment process when obtaining user authority information indicating a signal processing authority for realizing scalability of the main information. apparatus. 14. Trigger information, which includes user authority information indicating authority of signal processing for realizing scalability of main information and adaptively changes a reproduction operation of the main information, is recorded as additional information of the main information. An information reproducing apparatus for reproducing the main information from an information recording medium, the main information detecting means detecting the main information from a reproduction signal read from the information recording medium, and the reproduction signal being read from the information recording medium. User authority information detecting means for detecting user authority information included in the additional information, and the main information detected by the main information detecting means based on the user authority detected by the user authority information detecting means. Adaptive processing means for performing signal processing for achieving scalability of main information; Information reproducing apparatus characterized by comprising a main information reproduction processing means for reproducing the main information subjected to the adaptive processing by physical means. 15. The information reproducing apparatus according to claim 14, wherein a signal processing parameter is included as the user authority information indicating the authority of the signal processing. 16. A content acquisition means for acquiring a content, and a reproduction operation of the main information, which includes main authority of the acquired content and user authority information indicating authority of signal processing for realizing scalability of the main information. Using the trigger information that is adaptively changed as the additional information of the main information, an information recording unit that records the main information and the additional information in an information recording medium, and a main that detects the main information from a reproduction signal read from the information recording medium. Information detecting means, user authority information detecting means for detecting user authority information contained in the additional information from a reproduction signal read from the information recording medium, and based on the user authority detected by the user authority information detection, For the main information detected by the main information detecting means, And adaptive processing means for performing signal processing for realizing scalability, the information recording and reproducing apparatus, characterized in that it comprises a main information reproduction processing means for reproducing the main information subjected to the adaptive processing by the adaptive processing means. 17. The information recording / reproducing apparatus according to claim 16, wherein a signal processing parameter is included as the user authority information indicating the authority of the signal processing. 18. The information recording device according to claim 16, wherein the information recording means performs a payment process when obtaining user authority information indicating a signal processing authority for achieving scalability of the main information. Playback device.