198765 ⎘
Signal processing not specific to the method of recording or reproducing; Circuits therefor; Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a watermark, i.e. a barely perceptible transformation of the original data which can nevertheless be recognised by an algorithm based on a hash function
DETECTING ELECTRONIC SYSTEM MODIFICATION
#2RECORDING MEDIUM AND PRODUCING METHOD THEREOF, REPRODUCING METHOD AND REPRODUCING APPARATUS, AND COPYRIGHT MANAGING METHOD
#3Methods and systems for encoding and protecting data using digital signature and watermarking techniques
#4Information processing apparatus and information processing method for decoding, reproducing and providing encrypted content
#5Methods and systems for encoding and protecting data using digital signature and watermarking techniques
#6Security thread for protecting media content
#7Handheld recorder incorporating true raw audio or video certification
#8Methods and systems for encoding and protecting data using digital signature and watermarking techniques
#9System and method for solving the “birthday problem” with watermarking
#10System and method for solving the “birthday” problem with watermarking
#11Methods and systems for encoding and protecting data using digital signature and watermarking techniques
#12Recording medium and producing method thereof, reproducing method and reproducing apparatus, and copyright managing method
#13Methods and systems for encoding and protecting data using digital signature and watermarking techniques
#14Methods and systems for encoding and protecting data using digital signature and watermarking techniques
#15System and method for determining modifications of media files