CN1711532A - Creating expiring copies in a check-out/check-in system - Google Patents
Creating expiring copies in a check-out/check-in system Download PDFInfo
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- CN1711532A CN1711532A CN 200380103036 CN200380103036A CN1711532A CN 1711532 A CN1711532 A CN 1711532A CN 200380103036 CN200380103036 CN 200380103036 CN 200380103036 A CN200380103036 A CN 200380103036A CN 1711532 A CN1711532 A CN 1711532A
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Abstract
A check-in/check-out system (100) and method creates limited-duration copies of protected content material (101). The system is configured to allow up-to-N contemporaneous copies (102) of the protected content material. A log (110) maintains a record of the copies currently outstanding, and their expiration times, after which time a conforming rendering device will cease to render the material of this expired copy. When a copy is returned, the entry in the log is deleted (270). If a copy is not returned to the system (100) before its expiration time, the system is configure to also delete its entry from the log (201), thereby allowing another copy to be made (205) to replace the expired copy, even though the expired copy has not been returned.
Description
Technical field
The present invention relates to the field of consumer device, relate in particular to the technology that is used to prevent or hinder the illicit copy of copy protection material.
Background technology
Continue suggestion and developed the technology that prevents or hinder the illicit copy of copy protection material, for example commercial music recordings.These technology attempt to limit the number of the copy that duplicates from the legal copy of a copy protection material usually.Simultaneously, the buyer of this legal copy expects to have the unlimited right of duplicating this copy for its people's purpose.For example, typical buyer will visit multiple arrangement and play and write down this material, and the material that expectation can unrestricted broadcast be bought on each installs.
Thereby the flash card record content material that is to use general day by day in this field is play on little portable equipment.These flash cards or similarly electronic storage device be that than the advantage that traditional recording medium such as disk or tape has it is therefore reliable more and stable that they contain the part that does not move.Similarly, the playback apparatus of these storage cards does not need to contain moving structure yet, and is therefore more reliable, stable, and more cheap than traditional player usually.Electronic storage device and corresponding player are smaller and more exquisite than traditional disk or tape and corresponding player usually, and power saving more usually, have further improved their use suitabilities as portable Play System.
Balance along with between the buyer's of the supplier's of copy protection material right and copy protection material the right is used to duplicate the small and exquisite of copy protection material, and the appearance of cheap medium presents a lot of potential problems.Because medium is very little, and the Desired Height portable application, so medium loses, and the possibility of damaging or mislaying is just very big.Equally, buyer expectation can be whenever replacing losing as required, reproducing contents material during copy damage or that mislay.On the contrary, because medium is inexpensive, the possibility of illegal a large amount of regeneration of content material is very high, and the supplier of material expectation can stop this illegal a large amount of regeneration.
The method that is used to limit reproducting content material ability is " check-out/check " system.Wherein, as other protection schemes described here, supposing to duplicate with playback equipment is " consistent " equipment, and they meet the standard that is used to protect the copy protection material.When providing equipment that a copy of duplicating material is put into a portable medium, the consistent equipment that provides prevents to carry out additional copy to outside the threshold value, is returned to the equipment that provides up to the portable medium that comprises this copy.In other words, the check-out/check system provides " one next " or " once at most N " replication theme to limit the copy number of obtainable protection content material simultaneously.This scheme has several shortcomings: if portable copy is lost, damaged or mislays, it can not " be return " to equipment is provided, and therefore ensuing duplicating can not be carried out.And, to have to the origin system that comes of the copy that duplicates is detected very " trouble ", this factor also will influence the acceptance of consumer to this protection scheme unfriendly.
Summary of the invention
The purpose of this invention is to provide a kind of copy protection method and system, can limit the number of the copy that obtains the protection content material simultaneously.Another object of the present invention provides a kind of copy protection method and system, thus the sending returning of copy and can generate additional copy of the content material that do not need protection.
These and other purpose realizes by a registration/cancellation system and method that generates the restriction duration copy of protection content material.This system is configured to allow to obtain simultaneously the copy of N protection content material.Controller is preserved the record of current uncompleted copy and their term of validity time, and after the term of validity, the consistent equipment that provides will stop to provide this expired copy material.When returning a copy, the clauses and subclauses in the record are deleted.If do not return a copy to system before its term of validity time expires, this system is configured to also its clauses and subclauses of deletion from record, and therefore the copy that allows to duplicate other replaces expired copy, even expired copy is not return.
Description of drawings
Accompanying drawing 1 has shown the example block diagram according to a registration/cancellation system of the present invention.
Accompanying drawing 2 has shown the example flow diagram according to a registration/cancellation system of the present invention.
In whole accompanying drawings, identical reference number is represented identical parts, perhaps carries out the parts of identical function.
Embodiment
Accompanying drawing 1 has shown an example block diagram according to registration of the present invention/cancellation system 100.The repertoire of system 100 is maximum N addressable copies 102 of while that allow to generate source material 101.Although source 101 and copy 102 are represented as CD, this medium can be CD, DVD, memory stick, perhaps is suitable for preserving any memory device of the content material that comprises source 101.
System 100 comprises a controller 150, and this controller is configured to control a copying equipment 140, and this copying equipment 140 influences source material 101 duplicating to copy 102.Controller 150 preserve one with the corresponding records 110 of each source material, carry out each and duplicate thereby determine whether to start copying equipment.According to the present invention, record 110 comprises the identifier and the term of validity time relevant with each copy 102 of each copy 102.According to this record 110, can determine the counting of the number of each source 101 current copy that send.Will describe below, when duplicating a copy, clauses and subclauses of registration in record, counting adds one; When returning a copy or copy when expired, from clauses and subclauses of record deletion, counter subtracts one.For a person skilled in the art clearly, can keep one independently counter (although this counter is unnecessary) preserve this counting, thereby the carrying out of quicken handling.
Controller 150 is configured to start a marking arrangement 130 and comes to provide a mark by copying equipment 140 for duplicating material 102.This mark is one " watermark " preferably, and this watermark can be added in the middle of the content material forevermore, thereby makes the appearance of watermark can not influence providing of material significantly.Can obtain multiple technologies in the prior art and generate and read watermark.Perhaps, mark can be the information that joins a specific part of material, for example clauses and subclauses in the contents list of CD or DVD, the perhaps clauses and subclauses of the predetermined storage location in memory stick or ROM.According to the present invention, mark optionally comprises a mark that shows the term of validity time of this duplicating material.Use word " selectivity " to be meant if the 102 neither one term of validity times of copy, not containing the term of validity in the mark is arbitrarily.
According to the present invention, if desired, the consistent system that provides will be configured to detect this term of validity time mark, and if the mandate time expiredly provide content material to duplicate prevention.Noting dubbing system and corresponding " time " between the system is provided is not one to one.For example, the term of validity time can clearly comprise authorizes the duration, and " counting downwards " of authorizing can just begin when providing system to provide duplicating material for the first time.By this way, because the restriction of energy, the portable equipment that provides can not be configured to preserve an effective real-time clock.In such embodiment, " service regeulations " that can use an acquiescence provide the usage count of equipment relevant with one the term of validity time of origin system.For example mandate term of validity of ten days can be converted into the usage count that 20 times of duplicating material provide, and the consistent equipment that provides is configured to prevent to provide duplicating material greater than 20 times when a term of validity of ten days is provided.In the middle of in these embodiments each, can be more Zao or late in the consistent actual term of validity of system's right of possession visit duplicating material that provides than the term of validity time of record in writing down.Source device has limited short-term effect with corresponding shortage of time one by one between the equipment is provided.All the result is that the some or all of of duplicating material has a restricted useful mandate time, and controller 150 is configured to eliminate the influence that copy material is duplicated after a definite term of validity.
In a preferred embodiment of the invention, the mandate duration of the user definition one " acquiescence " of system 100, thereby the term of validity time is determined in the combination of the content of itself and timer 120, and also is provided a selection that covers these default values for particular copy 102.For example, regularly content material is downloaded to the mandate duration that the user of portable memory stick can give tacit consent to be set to three months, but when CD of generation, this can be provided with covering, so that a longer mandate duration to be set.Perhaps, system 100 can be configured to allow to be provided with according to medium 102 or other factor the mandate duration of a plurality of acquiescences.
Mark can also comprise the another kind of material that duplicates control that promotes protective material.U.S.'s publication application " in registration; in the cancellation system to the registration of duplicating of protective material " (" REGIDTERING COPY PROTRCTED MATERIAL IN A CHECK-IN; CHECK-OUTSYSTEM "); sequence number is 09/548; 728; Michael Epstein submitted on April 13rd, 2000; attorney docket is PHA23; 671; thereby disclose a kind of medium that use to guarantee receives duplicating material in the challenge-response protocol of specialized equipment and be used to register the identical mark of the employed medium of material, this patent document is included in the middle of this paper by reference.
Controller 150 management copy material 102 that return or registration.When copy material 102 was return, controller was discerned the source 101 of this material, removed the relevant clauses and subclauses of record and source 101 and copy 102, and the removal or the content of forbidding copy 102.According to the present invention, expired also can the influence of the mandate term of validity of copy 102 removed corresponding clauses and subclauses from record.
Accompanying drawing 2 has shown the example flow diagram according to registration of the present invention/cancellation system.When each operation of system 201 starts beginning, new record more, the clauses and subclauses of expired copy in the deletion record are up-to-date thereby make the current counting of uncompleted not out of date copy.210, receive a request, perhaps generate the copy of source material, perhaps return the copy that had before carried out.If request is to generate a copy, in the source of 220 identification requests.225, if according to the current clauses and subclauses in the record in this source, the current counting of the uncompleted not out of date copy of request source has reached maximum acceptable value N, will be rejected in 228 requests of carrying out additional copy so.
230, if current counting less than N, this copy is authorized to, and determines the term of validity time of this copy.As mentioned above, preferably can obtain the mandate duration of an acquiescence, duplicate and under the situation that minimum user interferes, to take place thereby make.Perhaps, the user can comprise a specific authorized duration in duplicate requests.The user can select to announce an infinitely-great mandate duration, thereby does not define the term of validity time.But do like this, if the user has misplaced place or the impaired words of copy with copy, the user will emit the final risk that consumes all subscriber authorisations.
If desired, 240, thereby the daily record of source material be updated the generation that reflects this copy with and the term of validity time, and if desired,, generate and have suitable safety label 250, comprise the copy of the source material of term of validity time.
210, if request is a copy of returning content material, the homogeneity in 260 definite these copies and source.As mentioned above, preferably call the homogeneity that security procedure guarantees copy, thus avoid forging or returning of repeating.265, searching record finds the copy of source material.270,, from record, remove these clauses and subclauses if find and the corresponding clauses and subclauses of this copy.If this copy is expired, and is recorded in during the request or during the previous request and has upgraded, in record, any clauses and subclauses of this copy will can not occur, and 270, deletion will be skipped 201.280, from the copy medium, wipe content material, perhaps be labeled as ensuing providing do not authorized.
Cardinal rule of the present invention has only been described in the front.Being appreciated that those skilled in the art can design does not clearly describe above various or the various schemes of record, realize principle of the present invention, and it is also included within the spirit and scope of the present invention.For example, the particular form of above-described function does not need with disclosed herein identical.Particularly, common meaning of word " record " expression can be a database, a concordance list, a lists of links, etc.Deletion can comprise any behavior of the clauses and subclauses result in the deletion record from record.For example, if record is used to write down the purpose of preserving outside effective time, can in record, use a mark to represent when determining whether that carrying out the next one duplicates, whether to consider each copy, and this mark can returning or authorize the expired of time to be eliminated according to duplicating material.In a similar fashion, if carrying out in the process that a new material with longer term of validity time duplicates material in request is just return, one skilled in the art will appreciate that erase step 280 and copy step 250 will be skipped, and will be updated the term of validity time in the record.Similarly, just return if carry out in the process of duplicating of a different materials material in request, and new material will rewrite returned materials, erase step 280 will be skipped.Those skilled in the art is according to above-mentioned description, can be clear and definite these and other system configuration and optimize feature, these also will be included in the scope of following claim.
Claims (10)
1. copy-protection system comprises:
A controller is coupled to a copying equipment exercisablely, and this controller is configured to preserve the record of the previous copy of source material, and according to the content control copying equipment of this record;
A marking arrangement, operationally be coupled to this controller and copying equipment, this marking arrangement is configured to an information project is appended to one or more previous copy,
Wherein
Information project comprise one with one or more previous copy in each relevant term of validity time, and
Write down each the relevant term of validity time that comprises with in one or more previous copy, and
Controller is configured in expired deletion later on of the term of validity time relevant with at least one copy one or more result that at least one copy in the previous copy duplicates to one or more.
2. copy-protection system as claimed in claim 1, wherein
Record comprises the identifier of source material, and
Controller is configured to the total number according to the copy of the content constraints source material of record.
3. copy-protection system as claimed in claim 1, wherein
Controller further is configured to:
Wipe the copy of returning of one or more previous copy, and
One or more result who returns copy is duplicated in deletion.
4. copy-protection system as claimed in claim 31, wherein
Controller be configured to by with return the corresponding record modification of copy and delete and duplicate one or more result that this returns copy.
5. copy-protection system as claimed in claim 4, wherein
Controller be configured to by with the corresponding record modification of at least one copy, in the term of validity time expired after, the deletion duplicate this at least one copy one or more result.
6. copy-protection system as claimed in claim 1, wherein
Controller be configured to by with the corresponding record modification of at least one copy, in the term of validity time expired after, the deletion duplicate this at least one copy one or more result.
7. copy-protection system as claimed in claim 1 further comprises
Copying equipment.
8. the method that generates of the copy of a Controlling Source material comprises:
Preserve the record of each copy of source material, wherein record comprises the term of validity time relevant with at least one copy of source material,
If have only the total number of not finishing copy when record expression source material to be lower than one when giving threshold value, generate a new copy of source material,
At expired later this record that upgrades of the term of validity time of at least one copy, thus expired later after the identification copy is return in the term of validity time of at least one copy, at least one copy is not included within the sum of not finishing copy of source material.
9. method as claimed in claim 8 further comprises:
New record more when the identification copy in source is return, thus after the identification copy is return, this identification copy is not included in the sum of not finishing copy of source material.
10. method as claimed in claim 9 further comprises
Use the safety method of the identification copy in identification source.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US42584302P | 2002-11-12 | 2002-11-12 | |
| US60/425,843 | 2002-11-12 | ||
| US60/483,767 | 2003-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1711532A true CN1711532A (en) | 2005-12-21 |
Family
ID=35707231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200380103036 Pending CN1711532A (en) | 2002-11-12 | 2003-11-07 | Creating expiring copies in a check-out/check-in system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1711532A (en) |
-
2003
- 2003-11-07 CN CN 200380103036 patent/CN1711532A/en active Pending
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Open date: 20051221 |