Abstract: An embodiment of the present invention proposes a novel file and multimedia management and tracking system using a secure key server. The invention also proposes a novel, but very simple, digital watermarking technique. With the invented technology, the user's files/data can be encrypted and managed automatically, whether the data is stored in a USB format or in a public storage space. Furthermore, the file/data access record will be kept on the secure key server. Hence, an user can always track when the file/data was accessed. The advantage of the invented secure file manage system is that the key server never access the protected electronic data, and the data—encrypted or decrypted—are always on the local machine. The secure key server only manages the keys and records the key queryings. With the present invented technology, the multimedia server and the multimedia owner can protect their copyright, even when the multimedia is downloaded from the Internet.

Abstract: An embodiment of the present invention proposes a new secure microprocessor for software protection. The invention presents a secure microprocessor, which embeds a symmetric encryption/decryption hardware a symmetric key (Embedded Key), and a safe cache. The symmetric encryption/decryption is the same for all microprocessors, but the Embedded Key is unique for each microprocessor.

Abstract: A double closed hydraulic mold stand is provided, which includes an up bottom plate (1), a down bottom plate (21), an up mold plate (8), a down mold plate (20), four guide sleeves (42), four guide columns (45), and a four mechanical linkage velocity ratio mechanism. The four guide sleeves (42) and the four guide columns (45) are distributed symmetrically and slidingly fit each other. An up piston cylinder, a down piston cylinder, an up bed piece (11), a down bed piece (31), an up concave mold seat (15), a down concave mold seat, an up concave mold (16), and a down concave mold (33) are fixed at the up bottom plate and the down bottom plate. An up pin-lift (3), a down pin-lift (24), an up punch pin seat (4), a down punch pin seat (22), an up punch pin (38), and a down punch pin (36) form an up piston and a down piston respectively. The up piston cylinder and the down piston cylinder have a split combined structure, which is convenient for manufacturing, installation, and maintenance.

Abstract: An embodiment of the present invention provides a design specification to provide both design and manufacture security without increasing the chip area or reducing the chip performance. The invention employs “free” encryption and uses flash memory or anti-fuse technology for the security implementation. This secure methodology could be embedded into any RTL synthesis tool, or be created in a stand-alone tool. For a RTL netlist, some registers are selected as the candidates for the “secure cells”, and all “secure cells” must have only one output. A random key will be generated (we call it the “real key”) to decide whether each register is to be inverted or not. All “secure cells” will be mapped to the special registers in the technology library.

Abstract: A double closed hydraulic mould stand is provided, which includes an up bottom plate (1), a down bottom plate (21), an up mould plate (8), a down mould plate (20), four guide sleeves (42), four guide columns (45), and a four mechanical linkage velocity ratio mechanism. The four guide sleeves (42) and the four guide columns (45) are distributed symmetrically and slidingly fit each other. An up piston cylinder, a down piston cylinder, an up bed piece (11), a down bed piece (31), an up concave mould seat (15), a down concave mould seat, an up concave mould (16), and a down concave mould (33) are fixed at the up bottom plate and the down bottom plate. An up pin-lift (3), a down pin-lift (24), an up punch pin seat (4), a down punch pin seat (22), an up punch pin (38), and a down punch pin (36) form an up piston and a down piston respectively. The up piston cylinder and the down piston cylinder have a split combined structure, which is convenient for manufacturing, installation, and maintenance.