76results about How to "High degree of data security" patented technology

Method and device for reducing the signal images at the output of a digital / analog converter. In a method for reducing the signal images at the output of a digital / analog converter, a frequency hopping clock generator provides a digital data signal whose data rate is varied according to a frequency hopping method. The digital data signal is converted into an analog signal by a digital / analog converter, the conversion clock being varied according to the frequency hopping method.

Word of the keyboard said in the invention includes print circuit board for processing keyboard. The invention uses following security measure for the keyboard: print circuit board in use for processing keyboard is divided into a part for processing function of secrecy, and a part for processing not confidential function. A mechanism for protecting secrecy information is setup on the keyboard to surround physical space of the part for processing function of secrecy. Once the mechanism gives signal to show that secrecy information meets with attack, secrecy information inside the part for processing function of secrecy is destroyed. A mechanism for protecting keyboard body is setup on the keyboard. Once the mechanism gives signal to show that keyboard meets with attack, the said secrecy information is also destroyed. The secrecy information includes at least a cipher key, and program run on microprocessor includes DES algorithm. The invention raises data security of keyboard operation.

The invention relates to an anti-overload type unmanned logistics transportation device based on a block chain technology. The device comprises a main body, a storage box and four supporting rods, theshape of the main body and the shape of the storage box are both located in a cuboid, the top of the storage box is attached to the bottom of the main body, the supporting rods are uniformly arrangedat four corners of the bottom of the main body, the supporting rods are perpendicular to the bottom of the main body, the distance between the bottom ends of the supporting rods and the main body islarger than the distance between the bottom of the storage box and the main body, a processor and a memory are arranged in the main body, the processor is electrically connected with the memory, and the memory receives and stores block chain data written by a block chain node. The anti-overload type unmanned logistics transportation device based on the block chain technology achieves the functionsof buffering and vibration reduction through a vibration reduction mechanism, improves the reliability of article convey, and also achieves the function of flying of the main body and the function ofoverload prevention through a driving mechanism.