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Class Information
Number: 705/57
Name: Data processing: financial, business practice, management, or cost/price determination > Business processing using cryptography > Usage protection of distributed data files > Copy protection or prevention
Description: Subject matter which prevents rerecording of a distributed data file.










Sub-classes under this class:

Class Number Class Name Patents
705/58 Having origin or program id 423


Patents under this class:

Patent Number Title Of Patent Date Issued
6802011 COPYRIGHT PROTECTION INFORMATION PROTECTING METHOD, INFORMATION SIGNAL PROCESSING METHOD, INFORMATION SIGNAL REPRODUCING METHOD, INFORMATION SIGNAL RECORDING METHOD, AND INFORMATION SIGNAL PRO Oct. 5, 2004
6792113 Adaptable security mechanism for preventing unauthorized access of digital data Sep. 14, 2004
6792333 Product management method, program for performing product management, and storage medium having recorded the program therein Sep. 14, 2004
6789192 Semiconductor memory card, data reading apparatus, and data reading/reproducing apparatus Sep. 7, 2004
6789198 Information distribution and processing system Sep. 7, 2004
6789199 Tamper resistance with pseudo-random binary sequence program interlocks Sep. 7, 2004
6778969 Method and apparatus for encrypting and recording received content information on a recording medium using both medium identification information and a cipher key for encryption Aug. 17, 2004
6775655 Rendering digital content in an encrypted rights-protected form Aug. 10, 2004
6772133 Information recording device and information reproducting device Aug. 3, 2004
6772344 Information distribution and processing system Aug. 3, 2004
6768942 Navigation system with decryption functions and secure geographic database Jul. 27, 2004
6769064 System for protecting software Jul. 27, 2004
6763464 Self-protecting documents Jul. 13, 2004
6757391 OPTICAL DISK, AN OPTICAL DISK BARCODE FORMING METHOD, AN OPTICAL DISK REPRODUCTION APPARATUS, A MARKING FORMING APPARATUS, A METHOD OF FORMING A LASER MARKING ON A OPTICAL DISK, AND A METHOD O Jun. 29, 2004
6754346 Method for tracing the distribution of physical digital media Jun. 22, 2004
6754349 Cryptographic key, or other secret material, recovery Jun. 22, 2004
6751598 Digital content distribution system and protection method Jun. 15, 2004
6748079 Method and system for recording data on and reading data from an optical medium Jun. 8, 2004
6748485 Recording medium, recording apparatus and recording/reproducing system for tracking use and transfer of data Jun. 8, 2004
6744894 Data management system Jun. 1, 2004
6745166 Contents information recording method, contents information processing unit, contents information deciphering method, contents information deciphering unit and media thereof Jun. 1, 2004
6742118 Information processing apparatus, information processing method, data recording medium, and information processing system May. 25, 2004
6742129 Software security mechanism May. 25, 2004
6738906 Marking of electronic documents in order to expose unauthorized publication May. 18, 2004
6735693 Disk drive comprising encryption circuitry selectively enabled by verifying a circuit that provides plaintext data May. 11, 2004
6731774 Associated information adding apparatus and method, and associated information detecting apparatus and method May. 4, 2004
6732180 Method to inhibit the identification and retrieval of proprietary media via automated search engines utilized in association with computer compatible communications network May. 4, 2004
6728379 Information processor and information processing method Apr. 27, 2004
6728882 OPTICAL DISK, AN OPTICAL DISK BARCODE FORMING METHOD, AN OPTICAL DISK REPRODUCTION APPARATUS, A MARKING FORMING APPARATUS, A METHOD OF FORMING A LASER MARKING ON AN OPTICAL DISK, AND A METHOD Apr. 27, 2004
6725205 System and method for secure software installation Apr. 20, 2004
6715074 Virus resistant and hardware independent method of flashing system bios Mar. 30, 2004
6715079 Method and system for soft modem protection Mar. 30, 2004
6711553 Method and apparatus for digital content copy protection Mar. 23, 2004
6707564 Image forming apparatus Mar. 16, 2004
6704777 Recording and reproducing apparatus and terminal apparatus Mar. 9, 2004
6701436 Information reproducing and recording apparatus and method which permits copying for personal use while protecting a copyright Mar. 2, 2004
6697944 Digital content distribution, transmission and protection system and method, and portable device for use therewith Feb. 24, 2004
6684199 METHOD FOR MINIMIZING PIRATING AND/OR UNAUTHORIZED COPYING AND/OR UNAUTHORIZED ACCESS OF/TO DATA ON/FROM DATA MEDIA INCLUDING COMPACT DISCS AND DIGITAL VERSATILE DISCS, AND SYSTEM AND DATA MED Jan. 27, 2004
6681213 System and method for preventing unauthorized data copying using communication network Jan. 20, 2004
6678665 Computer system for protecting software and a method for protecting software Jan. 13, 2004
6674858 Receiving device, recording and reproducing device and receiving/recording-reproducing system for digital broadcast signal Jan. 6, 2004
6671808 USB-compliant personal key Dec. 30, 2003
6668246 Multimedia data delivery and playback system with multi-level content and privacy protection Dec. 23, 2003
6647495 Information processing apparatus and method and recording medium Nov. 11, 2003
6636867 Method of enabling and administering commercial transactions using a computerized administration system Oct. 21, 2003
6633534 Optical disk and optical disk drive Oct. 14, 2003
6633853 Recordable optical disk encrypted with disk identification and multiple keys Oct. 14, 2003
6631359 Writeable medium access control using a medium writeable area Oct. 7, 2003
6618335 Method and apparatus for recording and reproducing information on and from recording disc Sep. 9, 2003
6615192 Contents copying system, copying method, computer-readable recording medium and disc drive copying contents but not a cipher key via a host computer Sep. 2, 2003











 
 
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