Abstract: A voiceprint-lock system for electronic data includes a voiceprint-key which is used to encrypt or decrypt the electronic data to form a voiceprint-lock of the electronic data. A voiceprint verification system is used to generate a voiceprint feature from which to retrieve the voiceprint-key. The voiceprint verification system includes a front-end processing portion, a feature-retrieving portion, a training system and a testing system so as to process raw voice data for training or testing operation.

Abstract: An intaglio offset printing machine includes a metal intaglio plate cylinder having a plurality of recesses in a circumference thereof and a transferring cylinder. Ink is filled into the recesses. The transferring cylinder presses against the metal intaglio plate cylinder, allowing the ink in the recesses of the metal intaglio plate cylinder to be transferred onto the transferring cylinder when the metal intaglio plate cylinder and the transferring cylinder are turned synchronously. The transferring cylinder presses against a surface of an object to be printed. Thus, the ink on the transferring cylinder is transferred onto the surface of the object passing through the transferring cylinder.