| 摘要 |
<p>A method of videotext information encryption and security transmission in a network includes steps of: a) at least a videotext information is recessive compression and encryption processing by a transmitting side of a videotext information in a specific digital coding way provided by a control center, generating a recessive digital videotext information, and transmitting it to a receiving side; b) the receiving side outputs the received recessive digital videotext to a printing material via an output device, the control center provides the receiving side a pole point O and a polar coordinate υ as an identity parameter of an identifier, said identifier is masking on a corresponding printed material by the receiving side based on an azimuth of a given pole point O and a polar coordinate υ, so that the recessive digital videote xt information can pleasant a videotext in a four dimension variables.</p> |
