| 6901516 |
System and method for ciphering data |
| May-31-2005 |
A system for ciphering data for transmission by a communication device is provided. The system includes a memory device having a memory buffer a first access port connected to the memory buffer and a second... |
| 6282293 |
System and method for charging fee for video information |
| Aug-28-2001 |
In a fee charging system for video information, scramble signals including video information and charging information can be recorded on a recording media such that the signals are read later therefrom.... |
| 5677953 |
System and method for access control for portable data storage media |
| Oct-14-1997 |
The system and method of the present invention provides the support of high density removable media, such as CD-ROM or MO, to be used as a distributed media for storing data where access thereto is securely... |
| 4533949 |
Subscription television system |
| Aug-6-1985 |
In a subscription television system, only a video signal for a specific program is scrambled in a television signal in accordance with a predetermined scrambling mode. A key signal, used for unscrambling... |
| 6944734 |
Storage apparatus and access control method |
| Sep-13-2005 |
A storage apparatus is capable of using a storage medium having at least a first region for storing therein data and a second region for storing therein both use permission discrimination information indicative... |
| 7020285 |
Stealthy audio watermarking |
| Mar-28-2006 |
Described herein is technology for inserting and detecting watermarks in signals, such as a music clip. In one described implementation, a watermarking system employs chess spread-spectrum sequences (i.e.,... |
| 6115534 |
Software carrier whose play can be controlled by the software publisher |
| Sep-5-2000 |
A system for playing a selected one of multiple audio tracks recorded in synchronized fashion with a motion picture on an optical disk. The optical disk has encoded on it a mixing master music and effects... |
| 7043020 |
Smartcard for use with a receiver of encrypted broadcast signals, and receiver |
| May-9-2006 |
A smartcard for use with a receiver of encrypted broadcast signals comprises a microprocessor for enabling or controlling decryption of said signals. A memory is coupled to the microprocessor. The microprocessor... |
| 6546490 |
Signal transmision method |
| Apr-8-2003 |
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... |
| 6798974 |
Signal supplying apparatus, signal processing method and record medium |
| Sep-28-2004 |
A plurality of copies of an information signal are prevented from being formed. For example, a transmitter such as IRD, STB, or the like transmits an information signal supplied from the outside via a... |
| 6691228 |
Signal reproducing/recording/transmitting method and apparatus and signal recording medium |
| Feb-10-2004 |
A signal reproducing apparatus for prohibiting copying or unauthorized use. The apparatus includes a copying management information decision circuit 19 for discriminating the state of the copying management... |
| 7023993 |
Signal reproducing/recording/transmitting method and apparatus and signal record medium for use with signals featuring a multiple-phase color burst |
| Apr-4-2006 |
A signal reproducing apparatus for prohibiting copying or unauthorized use. The apparatus includes a copying management information decision circuit 19 for discriminating the state of the copying management... |
| 6289103 |
Signal reproducing/recording/transmitting method and apparatus and signal record medium |
| Sep-11-2001 |
A signal reproducing apparatus for prohibiting copying or unauthorized use. The apparatus includes a copying management information decision circuit 19 for discriminating the state of the copying management... |
| 6108423 |
Signal reproducing/recording/transmitting method and apparatus and signal record medium |
| Aug-22-2000 |
A signal reproducing apparatus for prohibiting copying or unauthorized use. The apparatus includes a copying management information decision circuit 19 for discriminating the state of the copying management... |
| 6516064 |
Signal recording apparatus, signal record medium and signal reproducing apparatus |
| Feb-4-2003 |
A signal reproducing apparatus in which unauthorized decoding or copying is rendered difficult. The apparatus is configured for reproducing ciphered data from a disc-shaped record medium 101 on which there... |
| 6628891 |
Signal filtering mechanism for a multi-purpose digital television receiver |
| Sep-30-2003 |
Conditional access methods and apparatus are provided for use with digital television receivers and other digital broadband receivers. The methods and apparatus are capable of handling several different... |
| 5291554 |
Shared-price custom video rentals via interactive TV |
| Mar-1-1994 |
Movies and like video programs are distributed electronically from a program storage and processing center in encrypted format over a satellite channel upon custom order for private viewing of one paying... |
| 6763464 |
Self-protecting documents |
| Jul-13-2004 |
A system and method for the secure distribution of electronic documents reduces the likelihood of unauthorized reproduction and redistribution by either authorized or unauthorized recipients. A self-protecting... |
| 6519700 |
Self-protecting documents |
| Feb-11-2003 |
A system and method for the secure distribution of electronic documents reduces the likelihood of unauthorized reproduction and redistribution by either authorized or unauthorized recipients. A self-protecting... |
| 6609203 |
Secure optically readable memory usable in connection with a limited number of machines |
| Aug-19-2003 |
Digital information stored on a CD-ROM is accessible by use of a password, which is readable initially on the CD-ROM and which subsequently becomes at least partially unreadable due to exposure of the... |
| 6385596 |
Secure online music distribution system |
| May-7-2002 |
A computer implemented online music distribution system provides for the secure delivery of audio data and related media, including text and images, over a public communications network. The online music... |
| 7006995 |
Secure distribution of digital data |
| Feb-28-2006 |
A secure digital data distribution system (100) for preventing unauthorized access to digital data. The system utilizes an identification system module (116) embedded in a digital storage media... |
| 4636855 |
Scrambled television signal receiver system |
| Jan-13-1987 |
A television signal receiving system for use with a scrambled television signal or a standard television signal includes a recording and reproducing circuit which records and reproduces the received television... |
| 5546461 |
Scramble system for use in digital video signal recording and reproducing system or transmission and receiving system, comprising scramble apparatus and descramble apparatus |
| Aug-13-1996 |
A scramble system of the present invention including a scramble apparatus and a descramble apparatus is applied to a recording and reproducing system or a transmission and receiving system wherein a frame... |
| 6850914 |
Revocation information updating method, revocation informaton updating apparatus and storage medium |
| Feb-1-2005 |
At least one set of revocation information for identifying electronic appliances that should be revoked for content protection and master revocation information for identifying electronic appliances that... |
| 7039615 |
Retail transactions involving digital content in a digital rights management (DRM) system |
| May-2-2006 |
A retailer facilitates issuance of a digital license from a licensor to a customer for a corresponding piece of digital content. The retailer receives payment for the license from the customer, where the... |
| 6882728 |
Reproduction apparatus and decoding apparatus |
| Apr-19-2005 |
Information or contents cannot be reproduced even from a regular storage medium which is encrypted in accordance with a predetermined encryption system, due to erroneous detection of watermarks. Detection... |
| 6434322 |
Reproducing method and apparatus, for a video signal having copy control information |
| Aug-13-2002 |
Electronic watermark information obtained by changing a luminance value of a luminance signal in a video signal and a copy generation management signal (CGMS signal) inserted into an area out of a scan... |
| 6868494 |
Reproducing apparatus and information distribution system |
| Mar-15-2005 |
A reproducing apparatus operable to move data that is coded and managed for copyright protection after evaluation an encryption key and permitting its movement based on a result of the evaluation, to copy... |
| 6058479 |
Redundant path data switch and media translator |
| May-2-2000 |
A bi-directional network medium translator and automatic redundant media data path switch connected between two dissimilar network media, e.g. Fiber Optic (FX) and a plurality of Twisted Pair (TX) data... |
| 6748485 |
Recording medium, recording apparatus and recording/reproducing system for tracking use and transfer of data |
| Jun-8-2004 |
A storage medium, an apparatus, a system and a method for writing data to and reproducing data from storage medium is provided. The storage medium comprises a data area for storing data and a management... |
| 6971024 |
Recording medium, data recording method and apparatus, data reproducing method and apparatus, and copying control method |
| Nov-29-2005 |
Data is recorded in a first part in accordance with a signal format equivalent to that of an existing CD at the lower limit of an allowable value of a track pitch and the lower limit of linear velocity,... |
| 6744584 |
Recording medium and apparatus for protecting copyrighted digital data |
| Jun-1-2004 |
Copying, dubbing or reproducing copyrighted digital data can be inhibited or restricted to properly protect a copyright. AV data recorded on a pre-recorded tape is output from a reproducing unit of a first... |
| 7000113 |
Recording information with a watermark related to a prerecorded medium mark on an information carrier |
| Feb-14-2006 |
A system for copy protection of recorded information is disclosed, including an information carrier, a recorder and a player. The information carrier, e.g. an optical disc, includes a medium mark representing... |
| 6157606 |
Recording apparatus, reproducing apparatus and optical recording medium |
| Dec-5-2000 |
A recording apparatus for modulating a master key used for encrypting main data in a pit-width direction by changing a light amount of a laser beam to then record it on an optical recording medium and... |
| 6813436 |
Recording apparatus, recording method and recording medium for preventing illegal duplication |
| Nov-2-2004 |
A digital watermark detection circuit detects a digital watermark inserted in an input signal. When the digital watermark detection circuit detects a digital watermark indicating the prohibition of duplication,... |
| 6587948 |
Recording apparatus, recording medium, playback apparatus, recording method and playback method |
| Jul-1-2003 |
A recording method and a recording apparatus whereby digital data is recorded onto a disc as run-length limited code used for modulating marks or spaces on the disc and, at the same time, the recorded... |
| 6898578 |
Recording apparatus for recording digital information |
| May-24-2005 |
A digital information recording apparatus to record digital information to protect copyright of digital information that includes at least first digital information and first copy control information.... |
| 6909784 |
Recording apparatus and recording method of electronic watermark |
| Jun-21-2005 |
A detector (1) of signal detects an electronic watermark (first electronic watermark) signal from an inputted contents data. The detected electronic watermark signal is temporarily stored in a memory (2)... |
| 6873787 |
Receiving apparatus, receiving method, and supplying medium |
| Mar-29-2005 |
A small-sized and low-cost receiving apparatus receives digital television broadcasts and reproduces DVD video discs. A receiving circuit receives a digital television broadcast wave via an antenna and... |
| 5406625 |
Receiving apparatus and recording method |
| Apr-11-1995 |
A determination is made whether recording by a recording apparatus is or is not feasible. This determination is made on the basis of whether or not scrambled reception signals can be descrambled. Recording... |
| 6651169 |
Protection of software using a challenge-response protocol embedded in the software |
| Nov-18-2003 |
A method for protecting an item of software, wherein at least one challenge is associated with the protected item of software, and at least one response accesses one private keying material. The challenge... |
| 6266416 |
Protection of software against use without permit |
| Jul-24-2001 |
An arrangement to protect software, particularly freely distributed application software, against utilization without permission of the copyright holder. By encrypting the software employing a key (k1)... |
| 6404889 |
Protection of a component video signal |
| Jun-11-2002 |
A VGA (or other component video signal) output, e.g. from a computer or DVD player, is protected so it is viewable on a VGA monitor. However, if the component video signal is converted to composite video... |
| 6948073 |
Protecting decrypted compressed content and decrypted decompressed content at a digital rights management client |
| Sep-20-2005 |
Theft of decompressed digital content as the content is being rendered is prevented. A requested slow-down of the rendering of the content is detected. Transfers of relatively large amounts of data are... |
| 6986048 |
Protecting content from illicit reproduction by proof of existence of a complete data set using security identifiers |
| Jan-10-2006 |
A number of data items are selected for inclusion in a data set so as to discourage a transmission of the entire set over a limited bandwidth communications path, such as the Internet. The data set includes... |
| 6889321 |
Protected IP telephony calls using encryption |
| May-3-2005 |
Communication information transmitted in the broadband communication system may be in a packet format and secured using encryption techniques, for example encryption software, including a means for providing... |
| 6370209 |
Process for sensing manipulations of digital information |
| Apr-9-2002 |
In a method for detecting a manipulation performed on digital information the erroneous determination of a manipulation during processing disturbances is prevented by subdividing the information into information... |
| 6888942 |
Process for administrating over changes to server-administrated client records in a stateless protocol |
| May-3-2005 |
A system for administrating over changes to a record shared by a plurality of users authorized to do so is provided with a resource to officiate over an official version of the record and to communicate... |
| 7017190 |
Portable recordable media anti-theft system |
| Mar-21-2006 |
An anti-theft system for a portable recordable media that contains a downloadable, user-sensitive software program files or data that the publisher wants to prevent multi-installations and unauthorized... |
