| 6714649 |
Pay broadcasting system with enhanced security against illegal access to a down loaded program in a subscriber terminal |
| Mar-30-2004 |
In a pay broadcasting system, data of a broadcast program is scrambled with a scramble key updated in a short period. The scramble key is encrypted with a first key assigned to the subscriber terminal.... |
| 6118744 |
Parental blocking system in a DVD integrated entertainment system |
| Sep-12-2000 |
A purchaser of DVD unit establishes a list of users who may access the DVD unit, and corresponding restrictions that apply to each user. When a user attempts to play a DVD disc, the unit examines the DVD... |
| 6990202 |
Packetizing devices for secure scalable data streaming |
| Jan-24-2006 |
A device and method thereof for packetizing scalably encoded and progressively encrypted data. The device includes a receiver adapted to receive a stream of data from an encoding and encrypting device,... |
| 5835589 |
Optical recording medium to store and access large volumes of data |
| Nov-10-1998 |
When recording a large volume of data such as video data, audio data, or the like, it is desirable to delete menus for unnecessary files and thereby enable quick and efficient access to data. An optical... |
| 6083667 |
Optical recording medium |
| Jul-4-2000 |
An optical recording medium includes a transparent substrate having a surface formed with a track of pits. A reflecting layer extends on the surface of the transparent substrate. The pits include first-type... |
| 6262967 |
Optical recording disc capable of preventing illegal copy |
| Jul-17-2001 |
An illegal disc copying protection system which includes an optical disc with recorded information as a series of pits aligned to a track direction from the optical disc, a recording system which records... |
| 6081785 |
Optical disk, optical recorder, optical reproducer, crytocommunication system and program license system |
| Jun-27-2000 |
The operating and other procedures of an optical disk application system of the type for which a network is used are simplified. Optical disks have auxiliary data recording areas, where different IDs for... |
| 6633534 |
Optical disk and optical disk drive |
| Oct-14-2003 |
A write-once DVD 1 has a lead-in area 4 provided inside a data area 5 where digital information on a document, image sound or the like is recorded, which includes prepits 9 holding copy managing key information... |
| 6760539 |
Optical disc, a recorder, a player, a recording method, and a reproducing method that are all used for the optical disc |
| Jul-6-2004 |
A video object is recorded on an optical disc. The video object is composed of at least one video object unit, and each video object unit contains control information and video data and has a presentation... |
| 6370321 |
Optical disc, a recorder, a player, a recording method, and a reproducing method that are all used for the optical disc |
| Apr-9-2002 |
A video object is recorded on an optical disc. The video object is composed of at least one video object unit, and each video object unit contains control information and video data and has a presentation... |
| 6954860 |
Network copy protection for database programs |
| Oct-11-2005 |
Improved techniques for implementing Network Copy Protection for database programs are disclosed. The techniques can provide Network Copy Protection across various platforms and/or connection protocols.... |
| 5963909 |
Multi-media copy management system |
| Oct-5-1999 |
Reproduction of a multi-media data signal which is stored on a source media or distributed via a communication network is controlled by inserting master tag data and control tag data into the data signal.... |
| 6314188 |
Motion picture data encrypting method and computer system and motion picture data encoding/decoding apparatus to which encrypting method is applied |
| Nov-6-2001 |
Of I, P, and B pictures contained in an MPEG 2 data stream, only the I picture is subjected to encryption such as scramble processing. Scramble rule data used at that time is stored in the lead-in area... |
| 6021199 |
Motion picture data encrypting method and computer system and motion picture data encoding/decoding apparatus to which encrypting method is applied |
| Feb-1-2000 |
Of I, P, and B pictures contained in an MPEG 2 data stream, only the I picture is subjected to encryption such as scramble processing. Scramble rule data used at that time is stored in the lead-in area... |
| 6044157 |
Microprocessor suitable for reproducing AV data while protecting the AV data from illegal copy and image information processing system using the microprocessor |
| Mar-28-2000 |
A microprocessor used in an image information processing system is provided. The microprocessor includes: decryption unit 59 for decrypting the encrypted compressed AV data; IDCT unit 58 for performing... |
| 6118870 |
Microprocessor having instruction set extensions for decryption and multimedia applications |
| Sep-12-2000 |
A subscriber station for decrypting and decompressing data is provided on a single chip. The chip includes a DES decryption unit for performing decryption of incoming data with a DES key, a public key... |
| 6766102 |
Methods for reading watermarks in unknown data types, and DVD drives with such functionality |
| Jul-20-2004 |
To prevent playback of pirated, non-encrypted video, a DVD-based system examines data read from a DVD disk for MPEG-like characteristics. If such attributes are detected, the data is examined for the presence... |
| 6754364 |
Methods and systems for fingerprinting digital data |
| Jun-22-2004 |
Methods and systems for fingerprinting digital data are described. In the described embodiment, Direct Sequence Spread Spectrum (DSSS) technology is utilized. Unique fingerprinting words are defined where... |
| 7000106 |
Methods and apparatus for kernel mode encryption of computer telephony |
| Feb-14-2006 |
Disclosed is a computer-readable medium containing program instructions for configuring a first computer so that a first telephony client on the first computer may securely communicate with a second telephony... |
| 7006630 |
Methods and apparatus for digital content protection |
| Feb-28-2006 |
A multilayer digital content protection system, particularly for a digital cinema application is provided. Detection of unauthorized activity at the time it is occurring is provided using a first protection... |
| 6271887 |
Method, apparatus and system for transmitting and receiving an image signal having superimposed information and for extracting information superimposed on an image signal |
| Aug-7-2001 |
The PN code generation controlling means 15 produces a PN code generation clock signal PNCLK to generate the PN code of one chip to one vertical section and supplies this clock signal to an SS duplication... |
| 6063134 |
Method to provide a software package and a provider station and a user station realizing the method and a basis software package |
| May-16-2000 |
The method is used to provide a software package for installation in a user station (US) without revealing the contents of the software package. The method includes the steps of encoding a readable source... |
| 6035329 |
Method of securing the playback of a DVD-ROM via triggering data sent via a cable network |
| Mar-7-2000 |
A method and system for implementing the pay-per-view DVD-ROM system, whereby the enabling data provided to the DVD-player allowing the playback of the DVD-ROM video data is provided to the DVD-player... |
| 6577810 |
Method of restricting reproduction for information signal, information signal reproducing device, and information signal recording medium |
| Jun-10-2003 |
When a use permission information detecting unit detects restrictive use permission information, time shift start information, and time shift end information from a reproduced video signal S6 supplied... |
| 6034931 |
Method of recording media data on a storage medium and method and system for accessing the media data recorded on the storage medium |
| Mar-7-2000 |
Management information is embedded by directly controlling media with a date hiding technique. A system which accesses (regenerates or records) media data by using the management information is controlled... |
| 6122374 |
Method of reading a service card |
| Sep-19-2000 |
In a video-communication receiver provided with a deciphering module (13) used for the descrambling of scrambled transmissions, using a memory card (17) for providing information required for descrambling,... |
| 6212329 |
Method of protection of data reproduction, and reproduction apparatus providing protection of data reproduction |
| Apr-3-2001 |
In a reproduction apparatus, for reproducing an original signal conveyed as main data by a data medium such as a recording disk or broadcasting system, with medium protection data which are specific to... |
| 5684877 |
Method of preventing videotape piracy |
| Nov-4-1997 |
A method of preventing videotape piracy by including on authorized copies of a videotape a designator of authenticity and a code which serves as a lottery number. |
| 6111506 |
Method of making an improved security identification document including contactless communication insert unit |
| Aug-29-2000 |
A method of making an improved security identification document includes the steps of forming a contactless communication insert unit by electrically connecting an integrated circuit including a microprocessor,... |
| 6590995 |
Method of inserting manipulation-proof digital fingerprints into electronic documents |
| Jul-8-2003 |
The present method concerns inserting manipulation-proof digital fingerprints into electronic documents making it possible to detect manipulations by purchasers or groups of purchasers. According to the... |
| 5828754 |
Method of inhibiting copying of digital data |
| Oct-27-1998 |
A method of inhibiting copying of digital data. In a first embodiment, a sequence of symbols is added to original data, the sequence of symbols selected to encode into channel bits having a large accumulated... |
| 6363486 |
Method of controlling usage of software components |
| Mar-26-2002 |
Controlling the usage of a software component by an application program in an end user computer system includes obtaining an identifier of the application program by a controller computer system and generating... |
| 4613902 |
Method of broadcasting an encoded video signal and a receiving apparatus for decoding the signal |
| Sep-23-1986 |
A video signal is encoded prior to broadcasting by inverting portions of the signal about an encoding axis at a predetermined reference level. To enable the reference level to be determined accurately... |
| 6944765 |
Method of authentication anonymous users while reducing potential for "middleman" fraud |
| Sep-13-2005 |
A method of authenticating anonymous users while reducing potential for "middleman" fraud includes the step of constructing a puzzle in response to information received from a software user. The puzzle... |
| 6457127 |
Method of and device for generating a key |
| Sep-24-2002 |
A key is generated to control the access to information on an information carrier. The key is derived from an M-bit master key and an information carrier key. Apparatus to read and/or write information... |
| 6990584 |
Method of and apparatus for restricting copy of digital information, and apparatus for recording digital information |
| Jan-24-2006 |
An apparatus for restricting a copy of digital information is provided with a detecting device for detecting a first watermark, which is buried in the digital information and comprises a first signal generated... |
| 6463153 |
Method for transmitting data apparatus for recording data medium for recording data and apparatus for reproducing data |
| Oct-8-2002 |
A data transmitting method, a data recording apparatus, a data record medium and a data reproducing apparatus are provided to disallow the encryption to be easily decoded and keep the secrecy of key information... |
| 6731756 |
Method for securing video images |
| May-4-2004 |
A method for protecting the video memory on a computer system from being illicitly copied. The invention decrypts a previously encrypted image and displays it on the video screen. During the time the image... |
| 6134660 |
Method for revoking computer backup files using cryptographic techniques |
| Oct-17-2000 |
A system enables a user to remove a file from a file system and from all backup tapes without ever mounting a single tape. When a file is backed up, it is first encrypted using a randomly generated key... |
| 6957194 |
Method for printing digital works |
| Oct-18-2005 |
A method for providing limited printing of a digital work having one or more rights associated therewith within a system having at least one repository configured to enforce use of the digital work in... |
| 6167136 |
Method for preventing copying of digital video disks |
| Dec-26-2000 |
A method for securely storing analog or digital data on a data storage medium. An analog information signal is combined with a noise signal. The composite noise and information signal is encrypted with... |
| 6332194 |
Method for data preparation and watermark insertion |
| Dec-18-2001 |
A method for data preparation and watermark insertion. The method includes the step of preparing the data at a first time by manipulating at least one set of the data characteristics for subsequent insertion... |
| 6353890 |
Method for copy protecting a record carrier, copy protected record carrier and means for detecting access control information |
| Mar-5-2002 |
A method for copy protecting a record carrier using a pattern of logical errors which cannot be corrected by the error correcting rules predefined for the record carrier. The pattern of logical errors... |
| 6470138 |
Method for controlling remote reproduction of an information-stored medium in a reproduction apparatus |
| Oct-22-2002 |
The present invention relates to a reproducing apparatus-for a remote rental system, and in particular to a reproducing apparatus and control method for the apparatus bus which the playback permission... |
| 6381747 |
Method for controlling copy protection in digital video networks |
| Apr-30-2002 |
A method and system of providing copy protection of video analog and digital signals and the like, wherein the signals are transmitted via a digital delivery network, and may comprise, for example, pay... |
| 6993162 |
Method for authenticating animation |
| Jan-31-2006 |
A method for authenticating animation, the method comprises the steps of capturing an image; converting the captured image into a wire mesh data for permitting animation of the image; providing movement... |
| 6009170 |
Method for appending a signal with ciphered playback mode information |
| Dec-28-1999 |
A signal transmission method applicable to prevention of modification or alteration of the playback mode information, such as copying management information or charging information. The playback mode information... |
| 6560496 |
Method for altering AC-3 data streams using minimum computation |
| May-6-2003 |
Methods and apparatus for broadcasting high quality audio "studio direct" with the same digital information employed in the studio by the video producer with AC-3 digital audio signals for broadcast to... |
| 6748079 |
Method and system for recording data on and reading data from an optical medium |
| Jun-8-2004 |
Accordingly, an improved method for recording data on an optical medium is disclosed which includes receiving and encoding a first set of data frames by a CIRC encoder to generate a second set of data... |
| 6539475 |
Method and system for protecting digital data from unauthorized copying |
| Mar-25-2003 |
Data is protected from unauthorized copying by rescrambling an unauthorized version of the data, but descrambling an authorized version of the data. This is done using a trigger signal. One property of... |
