Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IndividualfiledCriticalIndividual
Priority claimed from CA002406253Aexternal-prioritypatent/CA2406253C/fr
Publication of CA2507785A1publicationCriticalpatent/CA2507785A1/fr
Application grantedgrantedCritical
Publication of CA2507785CpublicationCriticalpatent/CA2507785C/fr
Two-Way Televisions, Distribution Of Moving Picture Or The Like
(AREA)
CA002507785A2000-04-142001-04-12Methode, systeme et appareil pour obtenir de l'information en rapport avec de l'information radiodiffusee
Expired - LifetimeCA2507785C
(fr)
Network camera apparatus, network camera server and digital video recorder for preventing forgery and alteration of digital image, and apparatus for authenticating the digital image from said apparatus, and method thereof
Systeme et procede permettant d'etablir une communication entre des dispositifs de communication a acces video d'une part, sans acces video d'autre part