Patent US5987126A successfully refreshed from Google Patents.
US5987126A
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Device having a digital interface and a network system using such a device and a copy protection method
Assignee: Toshiba Corp
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Filing: 1998-03-13
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Granted: 1999-11-16
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Expires: 2018-03-13
Abstract
Abstract A copy flag detecting circuit in a device detects the copy generation management information. This copy generation management information is inserted in the CIP header of the IEEE 1394 packet for transmission. The copy flag detector of the 1394 interface in the device detects the copy generation management information in the CIP header. According to the detection result, the copy generation managing circuit records new copy generation management information and the recording controlling circuit permits or prohibits recording. Thus, there is no need for a decoding circuit at a receiving device.
Inventors
- 👤 Takehiko Okuyama
- 👤 Kenji Shimoda
- 👤 Kenjiro Endoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:58
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/00086; G11B20/00731; G11B20/00746; G11B20/00753; G11B20/00768; H; H04; H04L; H04L63/00; H04L63/04; G11B20/0021; G11B20/00217; G11B20/00224; G11B20/10; G11B20/12; G11B20/1217; H04L63/0428; H04N; H04N21/00; H04N21/20; H04N21/23; H04N21/236; H04N21/23608; H04N21/40; H04N21/41; H04N21/4104; H04N21/4135; H04N21/43; H04N21/432; H04N21/4325; H04N21/434; H04N21/4344; H04N21/436; H04N21/4363; H04N21/43632; H04N21/4367; H04N21/45; H04N21/462; H04N21/4627; H04N5/00; H04N5/76; H04N5/765; H04N5/91; H04N5/913; H04L2463/00; H04L2463/101; H04N2005/91307; H04N2005/91314; H04N2005/91321; H04N2005/91328; H04N2005/91357; H04N2005/91364; H04N2005/91371; H04N5/775
Claims Analysis
Total Claims: 62
Claim 1
Independent Claim
94 words
A device having a digital interface comprising: a first detector which detects, from data in a predetermined data format containing copy generation management information said copy generation management information; and a first interface which converts said data in said predetermined format to data in a data format of a network bus, and inserts said copy generation management information, based on a detection result of said first detector, in a data format corresponding to said data format of said network bus into said data after format conversion before sending said data to said network bus.
Claim 2
Independent Claim
94 words
A device having a digital interface comprising: a first detector which detects, from data in a predetermined data format containing copy generation management information said copy generation management information; and a first interface which converts said data in said predetermined format to data in a data format of a network bus, and inserts said copy generation management information, based on a detection result of said first detector, in a data format corresponding to said data format of said network bus into said data after format conversion before sending said data to said network bus.
Claim 3
Independent Claim
89 words
A device having a digital interface, comprising: an interface which receives said converted data in said data format of said network bus from another interface via said network bus, which restores said converted data to said original predetermined data format, and which outputs said restored data; a detector which detects said copy generation management information contained in said converted data from said other interface; and a record controller which, according to said detection result of said detector, permits or prohibits recording of said restored data output from said interface.
Claim 4
Independent Claim
89 words
A device having a digital interface, comprising: an interface which receives said converted data in said data format of said network bus from another interface via said network bus, which restores said converted data to said original predetermined data format, and which outputs said restored data; a detector which detects said copy generation management information contained in said converted data from said other interface; and a record controller which, according to said detection result of said detector, permits or prohibits recording of said restored data output from said interface.
Claim 5
Dependent Claim
41 words
The device having a digital interface according to claim 2, further comprising: a format converter which converts said restored data output from said second interface to data in a data format corresponding to a recording format of a predetermined recording device.
Claim 6
Dependent Claim
57 words
The device having a digital interface according to claim 3, further comprising: a copy generation manager which, when said copy generation management information detected by said second detector indicates one-time recording permission, changes said copy generation management information contained in said restored data output from said second interface to said copy generation management information indicating recording prohibition.
Claim 7
Dependent Claim
37 words
The device having a digital interface according to claim 1 or 2, wherein said network bus performs synchronous transmission and said first interface or said second interface synchronously transmits data with said copy generation management information inserted.
Claim 8
Dependent Claim
99 words
The device having a digital interface according to claim 1, wherein at least one type of copy generation management information to control copying for each data type at a receiving side is inserted in said data in said predetermined data format, wherein said first detector detects said at least one type of copy generation management information, and wherein said first interface inserts said at least one type of copy generation management information into said data after format conversion in said data format corresponding to said data format of said network bus before sending said data to said network bus.
Claim 9
Dependent Claim
97 words
The device having a digital interface according to claim 2, wherein at least one type of copy generation management information to control copying for each data type is inserted in said converted data, wherein said second detector detects said at least one type of copy generation management information contained in said converted data from said first interface, and wherein said record controller permits or prohibits recording of said restored data output from said second interface according to copy generation management information of said at least one type of copy generation management information detected by said second detector.
Claim 10
Dependent Claim
42 words
The device having a digital interface according to claim 6 or 7, wherein said at least one type of copy generation management information contains copy generation management information for audio equipment and copy generation management information for appliances other than audio equipment.
Claim 11
Dependent Claim
55 words
The device having a digital interface according to claim 6, wherein said first interface inserts, for said at least one type of copy generation management information, effectiveness information to indicate whether said copy generation management information type is effective or ineffective for each copy generation management information into said data sent to said network bus.
Claim 12
Dependent Claim
86 words
The device having a digital interface according to claim 7, wherein said record controller determines, when said effectiveness information for each copy generation management information is inserted in said converted data, said copy generation management information for copy control from said at least one type of copy generation management information according to said effectiveness information and a recording mode of a predetermined device indicating whether or not said data is audio, said effective data indicating whether said copy generation management information type is effective or ineffective.
Claim 13
Dependent Claim
44 words
The device having a digital interface according to claim 6, wherein said first interface executes encryption of said data to be sent to said network bus, when said at least one type of copy generation management information indicates copy prohibition or one-time copy permission.
Claim 14
Dependent Claim
37 words
The device having a digital interface according to claim 11, wherein said first interface inserts information indicating whether said data sent to said network bus is encrypted or not to said data sent to said network bus.
Claim 15
Dependent Claim
87 words
The device having a digital interface according to claim 1, wherein copy control information containing at least one type of copy generation management information to control copying for each data type at a receiving side is inserted in said data in said predetermined data format, wherein said first detector detects said copy control information, and wherein said first interface cyclically inserts said copy control information into isochronous packets of said data after format conversion with a predetermined isochronous cycle before sending said data to said network bus.
Claim 16
Dependent Claim
79 words
A copy protection method, comprising: detecting, from data in a predetermined data format containing copy generation management information, said copy generation management information; and converting said data in said predetermined data format to data in a data format of a network bus, said network bus inserting said detected copy generation management information in a data format corresponding to said data format of said network bus into said data after format conversion before sending said data to said network bus.
Claim 17
Dependent Claim
79 words
A copy protection method, comprising: detecting, from data in a predetermined data format containing copy generation management information, said copy generation management information; and converting said data in said predetermined data format to data in a data format of a network bus, said network bus inserting said detected copy generation management information in a data format corresponding to said data format of said network bus into said data after format conversion before sending said data to said network bus.
Claim 18
Dependent Claim
115 words
A copy protection method, comprising: receiving converted data said converted data being of a predetermined data format containing copy generation management information and converted into data in a data format of a network bus with said copy generation management information inserted in a data format corresponding to said data format of said network bus via said network bus; restoring said data format of said received converted data from said data format of said network bus to said original predetermined data format outputting said restored data; detecting said copy generation management information contained in said received converted data; and permitting or prohibiting recording of said received converted data according to said copy generation management information detected.
Claim 19
Dependent Claim
115 words
A copy protection method, comprising: receiving converted data said converted data being of a predetermined data format containing copy generation management information and converted into data in a data format of a network bus with said copy generation management information inserted in a data format corresponding to said data format of said network bus via said network bus; restoring said data format of said received converted data from said data format of said network bus to said original predetermined data format outputting said restored data; detecting said copy generation management information contained in said received converted data; and permitting or prohibiting recording of said received converted data according to said copy generation management information detected.
Claim 20
Dependent Claim
82 words
The device having a digital interface according to claim 10, wherein said record controller comprises a priority specifier which specifies copy generation management information for copy control from said at least one copy generation management information according to said recording mode of said predetermined device, and, when said effectiveness information indicates that copy generation management information of a type specified by said priority specifier is ineffective, which executes copy control using copy generation management information indicated as effective by said effectiveness information.
Claim 21
Dependent Claim
69 words
The device having a digital interface according to claim 1, wherein said first interface transmits, when said detection result of said first detector indicates that copying is permitted only once, a new copy generation management information corresponding to said copy generation management information indicating permission to copy only once or copy prohibition to each receiving device using asynchronous data in order to control copying for each said receiving device.
Claim 22
Dependent Claim
89 words
The device having a digital interface according to claim 2, wherein said second interface further comprises a third detector which detects new copy generation management information corresponding to said copy generation management information transmitted as asynchronous data, and wherein said record controller, when said third detector detects said new copy generation management information, permits or prohibits recording of said restored data output from said second interface according to said new copy generation management information, placing priority to such information over copy generation management information inserted in synchronously transmitted data.
Claim 23
Dependent Claim
190 words
A network system, comprising: at a sending side, a first detector which detects from data in a predetermined data format containing copy generation management information said copy generation management information; and a first interface which converts said data in said predetermined data format to data in a data format of a network bus, and which inserts copy generation management information based on a detection result of said first detector into data after format conversion with a data format corresponding to said data format of said network bus before sending said data to said network bus; and at a receiving side, a second interface which receives said data sent from said first interface to said network bus, which restores said data format of said received data from said data format of said network bus to an original data format, and which outputs said restored data; a second detector which detects said copy generation management information contained in said converted data from said first interface; and a record controller which permits or prohibits recording of said restored data output from said second interface according to said detection result of said second detector.
Claim 24
Dependent Claim
190 words
A network system, comprising: at a sending side, a first detector which detects from data in a predetermined data format containing copy generation management information said copy generation management information; and a first interface which converts said data in said predetermined data format to data in a data format of a network bus, and which inserts copy generation management information based on a detection result of said first detector into data after format conversion with a data format corresponding to said data format of said network bus before sending said data to said network bus; and at a receiving side, a second interface which receives said data sent from said first interface to said network bus, which restores said data format of said received data from said data format of said network bus to an original data format, and which outputs said restored data; a second detector which detects said copy generation management information contained in said converted data from said first interface; and a record controller which permits or prohibits recording of said restored data output from said second interface according to said detection result of said second detector.
Claim 25
Dependent Claim
21 words
The device having a digital interface according to claim 1 or 2, wherein said network bus conforms to IEEE 1394 standard.
Claim 26
Dependent Claim
16 words
The network system according to claim 19, wherein said network bus conforms to IEEE 1394 standard.
Claim 27
Dependent Claim
30 words
The device having a digital interface according to claim 1 or 2, wherein said network bus supports multi-channel transmission and said copy generation management information is set for each channel.
Claim 28
Independent Claim
42 words
The device having a digital interface according to claims 1 or 3, further comprising: a recording format convertor which converts the output from said receiving interface to data in a data format corresponding to a recording format of a predetermined recording device.
Claim 29
Dependent Claim
114 words
The device having a digital interface according to claim 1, wherein at least one type of copy generation management information to control copying for each data type at a receiving aide of a predetermined recording device is inserted in said at least one original signal in said at least one predetermined format, wherein said at least one detector for each data format detects said at least one copy generation management information, and wherein said sending interface inserts said at least one type of copy generation management information into said data after format conversion with said data format corresponding to said data format of said network bus before sending said data to said network bus.
Claim 30
Dependent Claim
114 words
The device having a digital interface according to claim 2, wherein at least one type of copy generation management information to control copying for each data type at a receiving aide of a predetermined recording device is inserted in said at least one original signal in said at least one predetermined format, wherein said at least one detector for each data format detects said at least one copy generation management information, and wherein said sending interface inserts said at least one type of copy generation management information into said data after format conversion with said data format corresponding to said data format of said network bus before sending said data to said network bus.
Claim 31
Dependent Claim
41 words
The device having a digital interface according to claim 25, wherein said at least one type of copy generation management information contains the copy generation management information for audio equipment and copy generation management information for appliances other than audio equipment.
Claim 32
Independent Claim
243 words
A device having a digital interface, comprising: at least one detector for each data format to which at least one original signal in at least one predetermined data format is input, said detector detects copy generation management information contained in said input original signal; a sending interface, said sending interface comprises a format converter which converts said at least one original signal in a predetermined data format to the data in a data format common to a network bus said network bus inserts copy generation management information based on a detection result of said at least one detector for each data format or copy generation management information based on the kind of signal source device to said at least one detector into said format converted signal with said data format corresponding to said data format of said network bus before sending said data to said network bus; a receiving interface which receives a transmitted signal from said sending interface by said network bus, restores said data format of said received signal from said data format of said network bus to said original data format of said original signal being, and outputs said signal; a common detector which detects said copy generation management information as inserted into said received signal; and a recording controller for, according to said detection result of said common detector which permits or prohibits recording said at least one original signal in a predetermined data format from said receiving interface.
Claim 33
Independent Claim
243 words
A device having a digital interface, comprising: at least one detector for each data format to which at least one original signal in at least one predetermined data format is input, said detector detects copy generation management information contained in said input original signal; a sending interface, said sending interface comprises a format converter which converts said at least one original signal in a predetermined data format to the data in a data format common to a network bus said network bus inserts copy generation management information based on a detection result of said at least one detector for each data format or copy generation management information based on the kind of signal source device to said at least one detector into said format converted signal with said data format corresponding to said data format of said network bus before sending said data to said network bus; a receiving interface which receives a transmitted signal from said sending interface by said network bus, restores said data format of said received signal from said data format of said network bus to said original data format of said original signal being, and outputs said signal; a common detector which detects said copy generation management information as inserted into said received signal; and a recording controller for, according to said detection result of said common detector which permits or prohibits recording said at least one original signal in a predetermined data format from said receiving interface.
Claim 34
Independent Claim
134 words
A device having a digital interface, comprising: a detector for a data format to which an original signal in a predetermined data format is input, said detector detects copy generation management information contained in said input original signal in a predetermined data format; and a sending interface, said sending interface comprises a format converter which converts said original signal in a predetermined data format to data in a data format common to a network bus, said network bus inserts copy generation management information based on a detection result of said detector or copy generation management information based on the kind of a signal source device for said detector into said format converted signal with said data format corresponding to said data format of said network bus before sending said data to said network bus.
Claim 35
Independent Claim
134 words
A device having a digital interface, comprising: a detector for a data format to which an original signal in a predetermined data format is input, said detector detects copy generation management information contained in said input original signal in a predetermined data format; and a sending interface, said sending interface comprises a format converter which converts said original signal in a predetermined data format to data in a data format common to a network bus, said network bus inserts copy generation management information based on a detection result of said detector or copy generation management information based on the kind of a signal source device for said detector into said format converted signal with said data format corresponding to said data format of said network bus before sending said data to said network bus.
Claim 36
Independent Claim
165 words
A device having a digital interface, comprising: a receiving interface which receives a transmitted signal obtained by converting at least one original signal in at least one predetermined format containing copy generation management information to data in a data format of a network bus, and into which said copy generation management information is inserted with a data format corresponding to said data format of said network bus by network bus, restores said data format of said received signal from said data format of said network bus to said original data format of said original signal, and outputs said signal; a common detector which detects said copy generation management information as inserted into said received signal with said data format corresponding to said data format of said network bus; and a recording controller according to a detection result of said common detector, which permits or prohibits recording of said at least one original signal in said at least one predetermined data format from said receiving interface.
Claim 37
Independent Claim
165 words
A device having a digital interface, comprising: a receiving interface which receives a transmitted signal obtained by converting at least one original signal in at least one predetermined format containing copy generation management information to data in a data format of a network bus, and into which said copy generation management information is inserted with a data format corresponding to said data format of said network bus by network bus, restores said data format of said received signal from said data format of said network bus to said original data format of said original signal, and outputs said signal; a common detector which detects said copy generation management information as inserted into said received signal with said data format corresponding to said data format of said network bus; and a recording controller according to a detection result of said common detector, which permits or prohibits recording of said at least one original signal in said at least one predetermined data format from said receiving interface.
Claim 38
Independent Claim
40 words
The device having a digital interface according to any one of claims 27-29, wherein said network bus is capable of synchronous transmission, and said sending interface or said receiving interface synchronously transmits data with said copy generation management information inserted.
Claim 39
Dependent Claim
98 words
The device having a digital interface according to claim 27, wherein at least one type of copy generation management information to control copying for each data type is inserted in said transmitted signal, wherein said common detector detects said at least one type of copy generation management information contained in said data received by said receiving interface, and wherein said recording controller permits or prohibits recording or receiving of said output from said receiving interface according to either copy generation management information from said at least one type of copy generation management information detected by said common detector.
Claim 40
Dependent Claim
41 words
The device having a digital interface according to claim 24, wherein said at least one type of copy generation management information contains the copy generation management information for audio equipment and copy generation management information for appliances other than audio equipment.
Claim 41
Independent Claim
46 words
The device having a digital interface according to claims 27 or 28, wherein said sending interface inserts information indicating which type of copy generation information among said at least one type of copy generation management information is transmitted into said data sent to said network bus.
Claim 42
Dependent Claim
84 words
The device having a digital interface according to claim 31, wherein said recording controller determines, when effectiveness information indicating which type of copy generation management information among said at least one type of copy generation management information is transmitted is inserted, from said copy generation management information on which copy control is based from among said at least one type of copy generation management information according to said effectiveness information a recording mode of a device indicating whether or not the data is audio.
Claim 43
Dependent Claim
44 words
The device having a digital interface according to claim 24, wherein said sending interface executes, when said at least one type of copy generation management information indicates copy prohibition or one-time copy permission, encryption of said data to be sent to said network bus.
Claim 44
Dependent Claim
37 words
The device having a digital interface according to claim 35, wherein said sending interface inserts information indicating whether said data sent to said network bus is encrypted or not into said data sent to said network bus.
Claim 45
Independent Claim
101 words
The device having a digital interface according to claims 27 or 28, wherein copy control information containing at least one type of copy generation management information to control copying for each data type at a receiving side is inserted into said at least one original signal in said at least one predetermined data format, said at least one detector for each data format detects said copy control information, and wherein said sending interface cyclically inserts said copy control information into isochronous packets of the data after format conversion with a predetermined isochronous cycle before sending said data to said network bus.
Claim 46
Dependent Claim
89 words
A copy protection method, comprising: detecting said copy generation management information from at least one original signal in at least one predetermined data format containing copy generation management information; and converting said at least one original signal in said at least one predetermined data format to data in a data format of a network bus, said copy generation management information being inserted into said data after format conversion with said data format corresponding to said data format of said network bus before sending said data to said network bus.
Claim 47
Dependent Claim
89 words
A copy protection method, comprising: detecting said copy generation management information from at least one original signal in at least one predetermined data format containing copy generation management information; and converting said at least one original signal in said at least one predetermined data format to data in a data format of a network bus, said copy generation management information being inserted into said data after format conversion with said data format corresponding to said data format of said network bus before sending said data to said network bus.
Claim 48
Dependent Claim
127 words
A copy protection method, comprising: receiving the transmitted signal, which is obtained by converting one or more original signals in a predetermined data format or predetermined data formats respectively containing the copy generation management information to the data in the data format of the network bus and into which said copy generation management information is inserted with the data format corresponding to the data format of said network bus, via said network bus and for restoring the data format of the received data from said data format of the network bus to the original data format before outputting, detecting said copy generation management information contained in the received data, and permitting or prohibiting recording of said received data according to said copy generation management information as detected.
Claim 49
Dependent Claim
127 words
A copy protection method, comprising: receiving the transmitted signal, which is obtained by converting one or more original signals in a predetermined data format or predetermined data formats respectively containing the copy generation management information to the data in the data format of the network bus and into which said copy generation management information is inserted with the data format corresponding to the data format of said network bus, via said network bus and for restoring the data format of the received data from said data format of the network bus to the original data format before outputting, detecting said copy generation management information contained in the received data, and permitting or prohibiting recording of said received data according to said copy generation management information as detected.
Claim 50
Dependent Claim
84 words
The device having a digital interface according to claim 34, wherein said recording controller means further comprises a priority specifier which specifies copy generation management information to be based on copy control among said at least one copy generation management information according to said recording mode of said device, and, when said effectiveness information indicates that said copy generation management information specified by said priority specifier is ineffective, executes copy control using said copy generation management information indicated as effective by said effectiveness information.
Claim 51
Independent Claim
77 words
The device having a digital interface according to claims 27 or 28, wherein said sending interface transmits, when said detection result of said at least one detector for each data format, indicates that copying is permitted only once, a new copy generation management information corresponding to said copy generation management information indicating permission for copying only once or copy prohibition to each receiving device using asynchronous data in order to control copying for each said receiving device.
Claim 52
Independent Claim
95 words
The device having a digital interface according to claims 28 or 29, wherein said receiving interface further comprises an asynchronous signal common detector which detects new copy generation management information corresponding to said copy generation management information transmitted as asynchronous data, and wherein said recording controller, when said asynchronous signal common detector detects said new copy generation management information, permits or prohibits recording of an output from said receiving interface according to said new copy generation management information, placing priority to such information over said copy generation management information inserted into the synchronously transmitted data.
Claim 53
Independent Claim
22 words
The device having a digital interface according to any one of claims 27-30, wherein said network bus conforms to IEEE 1394 standard.
Claim 54
Independent Claim
31 words
The device having a digital interface according to any one of claims 27-28, wherein said network bus supports multi-channel transmission and said copy generation management information is set for each channel.
Claim 55
Independent Claim
96 words
The device having a digital interface according to claims 27 or 28, wherein said sending interface inserts copy generation management information detected by said at least one detector as said at least one signal source device for said at least one detector recognizes said at least one data format of said at least one original signal, and inserts copy generation management information indicating prohibition of recording if said at least one signal source device of said at least one detector does not recognize said at least one data format of said at least one original signal.
Claim 56
Dependent Claim
98 words
The device having a digital interface according to claim 29, wherein at least one type of copy generation management information to control copying for each data type is inserted in said transmitted signal, wherein said common detector detects said at least one type of copy generation management information contained in said data received by said receiving interface, and wherein said recording controller permits or prohibits recording or receiving of said output from said receiving interface according to either copy generation management information from said at least one type of copy generation management information detected by said common detector.
Claim 57
Dependent Claim
41 words
The device having a digital interface according to claim 31, wherein said at least one type of copy generation management information contains the copy generation management information for audio equipment and copy generation management information for appliances other than audio equipment.
Claim 58
Dependent Claim
41 words
The device having a digital interface according to claim 46, wherein said at least one type of copy generation management information contains the copy generation management information for audio equipment and copy generation management information for appliances other than audio equipment.
Claim 59
Dependent Claim
84 words
The device having a digital interface according to claim 46, wherein said recording controller determines, when effectiveness information indicating which type of copy generation management information among said at least one type of copy generation management information is transmitted is inserted, from said copy generation management information on which copy control is based from among said at least one type of copy generation management information according to said effectiveness information a recording mode of a device indicating whether or not the data is audio.
Claim 60
Dependent Claim
44 words
The device having a digital interface according to claim 25, wherein said sending interface executes, when said at least one type of copy generation management information indicates copy prohibition or one-time copy permission, encryption of said data to be sent to said network bus.
Claim 61
Dependent Claim
37 words
The device having a digital interface according to claim 50, wherein said sending interface inserts information indicating whether said data sent to said network bus is encrypted or not into said data sent to said network bus.
Claim 62
Dependent Claim
84 words
The device having a digital interface according to claim 49, wherein said recording controller means further comprises a priority specifier which specifies copy generation management information to be based on copy control among said at least one copy generation management information according to said recording mode of said device, and, when said effectiveness information indicates that said copy generation management information specified by said priority specifier is ineffective, executes copy control using said copy generation management information indicated as effective by said effectiveness information.
References Cited (Backward Citations)
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| 11.5 Years (Year 12) | 2010-11-15 | 2011-05-17 | 2011-11-16 | $7700.00 | Window Closed / Lapsed |