Abstract: A method and system for emulating a secret code between a first hardware module to a second hardware module. First, the secret code that is initially stored in the first hardware module is transformed into a transformed secret code according to a transformation pattern randomly selected from a set of possible transformation patterns. Then the transformed secret code is transferred to the second hardware module. Next, the second hardware module can repeatedly guess a hypothetical secret code from the transformed secret code by using a transformation pattern selected from the possible transformation patterns and reversing the effect of the selected transformation pattern on the transformed secret code. In addition, the hypothetical secret code is used to encode a test sample, and the encoded test sample is sent back to the first hardware module. Accordingly, the first hardware module can verify the validity of the current hypothetical secret code by checking the encoded test sample.

Abstract: A framework and a respective method for inter-element channel transmission are introduced mainly by constructing a plurality of connecting channels between elements. Each channel further includes a plurality of signal lines. Implicit meaning (data, address or control signal) in the signal line is realized by judging the variation of duty cycle in a clock signal, or an A/C line is used to define the transmission of a start signature, an end signature, address signals and control signals. By providing the transmission models of the present invention, each channel can operate independently, perform unidirectional transmission of address and data signals, and adjust the channel arrangement in accordance with practical requirements. Thereby, the signal transmission between elements can be highly mobile, the idle transmission time between elements can be greatly reduced, and the optimal transmission efficiency can be achieved.

Abstract: A lower inertial compact disc drive includes a rotary needle, a rotary driving device and a straight movement device. The rotary needle is installed below a read and written surface of the disc, and a center of the rotary needle is installed with a fixed reflector. The selected positions at two sides thereof are installed with a movable reflector and a balance block; and a straight movement device for controlling the reflector and the balance block to move oppositely along a straight path on the rotary needle so as to control the alternation of the reading optic path. The rotary driving device has a small inertia, and thus a small power motor may serve the object. Similarly, the movable reflector, convex lens, and balance block are light and a small power servomotor can be used. Consequently, the power is saved greatly.

Abstract: A method of IC packing/unpacking for preserving and updating data stored in the IC and the structure thereof is disclosed. The method is able to encase the IC to prevent intentional piracy and allow data preservation and update. The structure has an upper plate (10) having a trough (12) defined therein; a lower plate (20) detachably connected with the upper plate (10); a PCB (30) sandwiched between the upper plate (10) and the lower plate (20) and forming an electrical connection with the upper plate (10); an interface (60) detachably inserted into the trough (12) and being able to receive data therein; and a controller (50) electrically connected with the interface (60) for coding the interface (60).

Abstract: A structure of controlled pipeline logic is disclosed. A random noise generator is added to the controlled pipeline logic. Moreover, each combinational logic element of the controlled pipeline logic is appended with an active bit. When no input flows into the controlled pipeline logic, the random noise generator will generate random noises, and the active bit will enforce the combinational logic element to accept the random noise as an input so that the controlled pipeline logic is always sustained in the active condition. The controlled pipeline logic is not exposing the internal functions thereof and avoiding improper monitoring and observation.

Abstract: An integrated circuit (IC) chip security box includes a top cover member and a bottom cover member respectively mounted to top and bottom sides of a circuit board to enclose an IC chip mounted to the circuit board. The cover members are made of conductive material for blocking radio frequency emission from the IC chip. Bolts secure the cover members to the circuit board. Conductive members are formed on one of the cover members and the circuit board and engage with each other when the security box is mounted to the circuit board thereby forming an electrical loop. Unauthorized opening of the security box breaks the electrical loop thereby causing a signal to the IC chip to initiate a purging process which deletes program codes written in the chip and prevents unauthorized copy of the codes.

Abstract: A computer system having a genetic code that cannot be directly accessed by processors or other master devices. In the computer system of the invention, a genetic code display procedure (GDP) and a genetic code setup procedure (GSP) are required to maintain the genetic code. In the GDP, the genetic code is transmitted to a monitor under the control of the processor, but cannot be directly accessed by the processor. In the GSP, a new key-in genetic code is transmitted to a memory device storing the genetic code, but cannot be directly accessed by the processor. Therefore, the genetic code of the computer system is secure and maintainable.