Device having a digital interface and a network system using such a device and a copy protection method
First Claim
Patent Images
1. 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.
1 Assignment
0 Petitions
Accused Products
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.
-
Citations
52 Claims
-
1. 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. - View Dependent Claims (5, 6, 8, 9, 11, 12, 13, 17, 20, 22, 23, 24, 32, 35, 36)
-
-
2. 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. - View Dependent Claims (3, 4, 7, 10, 16, 18, 25, 26, 50, 51)
-
-
14. 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.
-
-
15. 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.
-
-
19. 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. - View Dependent Claims (21)
-
-
27. 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. - View Dependent Claims (30, 31, 33, 34, 37, 40, 41, 43, 44, 45, 47)
-
-
28. 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. - View Dependent Claims (42)
-
-
29. 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. - View Dependent Claims (46, 48, 49, 52)
-
-
38. 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.
-
-
39. 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.
-
Specification