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114 results about "Copying mechanism" patented technology

In the study of scale-free networks, a copying mechanism is a process by which such a network can form and grow, by means of repeated steps in which nodes are duplicated with mutations from existing nodes. Several variations of copying mechanisms have been studied. In the general copying model, a growing network starts as a small initial graph and, at each time step, a new vertex is added with a given number k of new outgoing edges. As a result of a stochastic selection, the neighbors of the new vertex are either chosen randomly among the existing vertices, or one existing vertex is randomly selected and k of its neighbors are ‘copied’ as heads of the new edges.

Large scale integrated circuit test data and method for testing power consumption cooperate optimization

The invention relates to a method collaborating and optimizing the test data and the power consumption of testing large scale integrated circuits. The method relates to the technical field of the large scale integrated circuits and is proposed to resolve the problem that in the prior art of SOC test, no method is available to effectively reduce the test data and the power consumption of test at the same time. The method has the following steps: the compatibility of scanning units of the circuit is analyzed and accordingly the scanning units are classified into three categories; each category of scanning units are connected respectively, and a scanning chain with copying mechanism is built; a set of test vector is adjusted according to the new scanning chain structure; the test set is compressed by the method based on the compression of repeated data and a compressed test set TE is acquired. When in the testing process, the compressed data is fully recovered by a decompression circuit to be tested. The invention discloses a design method for the testability of integrated circuits, and reduces the power consumption of circuits in the testing process, thus ensuring the reliability and testability; furthermore, the invention can effectively reduce the quantity of test data, shorten the test process, and lessen the number of ATE channels.
Owner:HARBIN INST OF TECH

Anti-copy method for embedded device program

The invention relates to an anti-copy method for an embedded device program. The method comprises: firstly, storing an embedded device ID and License information in a hidden region, and reading device ID information to an RAM region from the hidden region after the device program performs authorization; secondly, calculating the License information according to the read device ID information and an authorization algorithm; and finally, comparing the calculated License information with the License information in the hidden region, and if the calculated License information is the same as the License information in the hidden region, the program entering a running state, or otherwise, performing authorization requesting. According to the method, the ID and the License are stored in the hidden region and technically protected, and the program is subjected to authorization management through the ID and the License; and the program stealer does not have a password, so that the hidden region cannot be accessed, data copy also cannot be realized, and further the program is protected. The method is simple and feasible, and can effectively protect an authorization process only by processing a storage mechanism of the ID and the License information without the need for complex encryption and decryption of the algorithm and addition of an anti-copy mechanism in a process and a thread.
Owner:XUJI GRP +3

Milling machine for shaft lever of camshaft of general machinery

The invention relates to the technical field of machining equipment, in particular to a milling machine for a shaft lever of a camshaft of general machinery. The milling machine comprises a machine table and a worktable fixed to the machine table. A slide is movably connected to the machine table through a translation mechanism, a main motor is fixed to the slide, the main motor is connected to atool assembly, the tool assembly comprises a plurality of milling cutters driven by the main motor, and the milling cutters are arranged in a polygonal shape; the worktable is connected to a workpieceseat through a copying mechanism, the copying mechanism can drive the workpiece seat to move along a polygonal path, the workpiece seat is connected to a clamping seat, a plurality of clamping holesfor clamping camshafts are formed in the clamping seat, and the clamping holes as with the milling cutters are arranged in a polygonal shape. According to the scheme, the camshafts move along the polygonal path and lean against the milling cutters in the moving process to be milled, so that the camshafts can be machined at one time, and therefore, a problem of manual misoperation and high structural wear as a result of many roundtripping numbers of times of tool feeding and tool retracting in shaft lever milling in the prior art is solved.
Owner:重庆九方铸造有限责任公司
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