Object-conditional access system
One-way synchronization of a two-way QKD system
Optical disc authentication method and apparatus
Optical disk, an optical barcode forming method, an optical...
Optical disk, an optical disk barcode forming method, an optical
Optical disk, an optical disk barcode forming method, an...
OPTICAL DISK, AN OPTICAL DISK BARCODE FORMING METHOD, AN...
OPTICAL DISK, AN OPTICAL DISK BARCODE FORMING METHOD, AN...
Optical disk, an optical disk barcode forming method, an...
Optical disk, an optical disk barcode forming method, an...
Optical disk, an optical disk barcode forming method, an...
Optical disk, an optical disk barcode forming method, an...
Optical disk, an optical disk barcode forming method, an...
Optical disk, optical disk barcode forming method, optical...
Optical encryption and decryption method and system
Optimized secure media playback control