| 6826315 |
Digital imaging device with image authentication capability |
| Nov-30-2004 |
A method and apparatus for authenticating a digital file operates by generating an image file or other data file in a first device such as a camera. The file is processed using a function to generate a... |
| 6499105 |
Digital data authentication method |
| Dec-24-2002 |
This invention provides a method for identifying a purchaser who purchased content from which an illegal copy was produced. A provider system encrypts purchased by the purchaser using a public key of a... |
| 6973576 |
Digital content security system |
| Dec-6-2005 |
A Personal Digital Key Digital Content Security System (PDK-DCSS) is used to protect computers from unauthorized use and protect the digital content stored on computers from being wrongfully accessed,... |
| 5933798 |
Detecting a watermark embedded in an information signal |
| Aug-3-1999 |
To detect a watermark signal embedded within an information signal, predictive filtering is applied to either the information signal, a plurality of applied watermark signals, or both types of signals.... |
| 6002772 |
Data management system |
| Dec-14-1999 |
To prevent piracy or leakage of data content, a cryptography technique and electronic watermark technique are combined together and used. In a data content supplied to a user, a user data is entered as... |
| 6081794 |
Data copyright management system |
| Jun-27-2000 |
A data copyright management system is provided, in which a primary user edits a received data and supplies the edited data to a secondary user. The copyright management system comprises a database and... |
| 6073122 |
Cryptographic method and apparatus for restricting access to transmitted programming content using extended headers |
| Jun-6-2000 |
A system for restricting access to transmitted programming content is disclosed, which transmits the encryption key used to encrypt the program to the customer with the encrypted programming content. A... |
| 7043019 |
Copy protection for digital motion picture image data |
| May-9-2006 |
An apparatus and method for displaying a copy-deterrent pattern (104) within a digital motion picture in order to discourage recording of the motion picture using a video camera or other sampling recording... |
| 7035827 |
Content receiving apparatus and method, storage medium, and server |
| Apr-25-2006 |
A content receiver is compatible with a plurality of rights management and protection methods (RMP) devised for each content distribution system. Only the format which specifies the specification of the... |
| 6829367 |
Content data judging apparatus |
| Dec-7-2004 |
Content data is judged to determine whether data prepared by a digital device were altered by performing an authentication process using a medium on which content data are recorded; reading the content... |
| 5581613 |
Color image processing apparatus and method |
| Dec-3-1996 |
An image processing system has an external image processing apparatus and an image input/output apparatus. One of the apparatuses acts as a transmission-side apparatus and the other apparatus acts as a... |
| 6158005 |
Cloning protection scheme for a digital information playback device |
| Dec-5-2000 |
A method and apparatus for cloning protection of a player. The present invention provides a method and apparatus for providing cloning protection of a software digital information playback device by using... |
| 6215875 |
Cipher processing system |
| Apr-10-2001 |
A cipher processing apparatus which readily updates a cipher processing circuit for encrypting information communicated through a communication function. A service station side and a user side are connected.... |
| 5930215 |
CD-Rom with machine-readable I.D. code |
| Jul-27-1999 |
A machine-readable serial number is formed on a CD-ROM by using a laser to selectively remove a reflective layer from the CD-ROM. Removal of the reflective layer creates defects in addressable information... |
| 5371792 |
CD-ROM disk and security check method for the same |
| Dec-6-1994 |
A CD-ROM disk comprises an identifier region having a disk identifier recorded in and a security code region having a security code recorded in. The identifier region and the security code region are provided... |
| 5870471 |
Authentication algorithms for video images |
| Feb-9-1999 |
A method of authenticating a video image created by a camera (V) or similar video device. The image is formed into a first 2-dimensional pixel array (A1) with each pixel (p.sub.m,n) represented by a data... |
| 4598288 |
Apparatus for controlling the reception of transmitted programs |
| Jul-1-1986 |
A control system for use with recording apparatus enables the recording of programs simultaneously desired by a user and authorized by a program provider, typically a broadcaster. The broadcaster attaches... |
| 6061451 |
Apparatus and method for receiving and decrypting encrypted data and protecting decrypted data from illegal use |
| May-9-2000 |
A data receiving apparatus is formed of a set top unit connected to a network and a security module. Digital video data which is supplied from the network and scrambled according to a first system is scrambled... |
| 5940135 |
Apparatus and method for encoding and decoding information in analog signals |
| Aug-17-1999 |
Apparatus and methods are provided for encoding, storing and decoding auxiliary information on an analog source signal in a way which has minimal impact on the human perception of the source information... |
| 6678378 |
3-dimensional shape data encryption and decryption |
| Jan-13-2004 |
Encryption and decryption methods for 3-dimensional shape data, especially copyrighted data, useful for detecting unauthorized use or piracy of a 3-dimensional object's shape represented by the 3-dimensional... |
