Abstract: A method for decoding tail-biting convolutional codes. The method includes initializing a correction depth, selecting a first starting state from a set of encoding states, and initializing a metric value for the selected starting state as zero and the other states as infinity. The input bit stream is read and a Search Depth Viterbi algorithm (SDVA) is performed to determine path metrics and identify a minimum-metric path. The ending state for the minimum-metric path is determined and the output for this ending state is identified as “previous output.” A second starting state is set to the ending state of the minimum-metric path, and symbols equal to the correction depth from the previous output are read. The SDVA is performed on the second set of read symbols to generate a corrected output. A decoded output is generated by replacing symbols at the beginning of the previous output with the corrected output.

Abstract: The present invention discloses a continuous material extraction system for continuously extracting valuable components in the material by means of a solvent, the system comprising: an extraction tank which is a sealed container being substantially parallelepiped, wherein in the longitudinal direction of the extraction tank, the extraction tank has a first end at which a material inlet is provided, and a second end, and a material outlet is provided at the first end or the second end; the upper portion of said extraction tank is provided with a solvent inlet, and the lower portion of said extraction tank is provided with a solution outlet; in the longitudinal direction of said extraction tank, the lower portion of said extraction tank is provided with an extraction bath which is applied for accommodating the solvent and the material, wherein in the longitudinal direction of said extraction tank said extraction bath is provided with a material conveying mechanism and an ultrasonic generator.

Abstract: A method for decoding tail-biting convolutional codes. The method includes initializing a correction depth, selecting a first starting state from a set of encoding states, and initializing a metric value for the selected starting state as zero and the other states as infinity. The input bit stream is read and a Search Depth Viterbi algorithm (SDVA) is performed to determine path metrics and identify a minimum-metric path. The ending state for the minimum-metric path is determined and the output for this ending state is identified as “previous output.” A second starting state is set to the ending state of the minimum-metric path, and symbols equal to the correction depth from the previous output are read. The SDVA is performed on the second set of read symbols to generate a corrected output. A decoded output is generated by replacing symbols at the beginning of the previous output with the corrected output.

Abstract: The invention proposes a system for measuring a resonance frequency of a tube. The system comprises: an oscillating unit (21) for oscillating the tube at a plurality of oscillation frequencies, respectively; a detecting unit (22) for detecting a time delay of transmitting a pressure pulse from a first position to a second position in the tube when the tube is oscillated at each oscillation frequency, wherein, when the tube is oscillated at each oscillation frequency in a specific oscillation frequency range of the plurality of oscillation frequencies, the detecting unit (22) detects a variation of the time delay—a determining unit (23) for determining a maximal variation of the time delay when the tube is oscillated at the oscillation frequencies in the specific oscillation frequency range; and—an indicating unit (24) for indicating an oscillation frequency corresponding to the maximal variation of the time delay, being a resonance frequency of the tube.

Abstract: A method for decoding tail-biting convolutional codes. The method includes initializing a correction depth, selecting a first starting state from a set of encoding states, and initializing a metric value for the selected starting state as zero and the other states as infinity. The input bit stream is read and a Search Depth Viterbi algorithm (SDVA) is performed to determine path metrics and identify a minimum-metric path. The ending state for the minimum-metric path is determined and the output for this ending state is identified as “previous output.” A second starting state is set to the ending state of the minimum-metric path, and symbols equal to the correction depth from the previous output are read. The SDVA is performed on the second set of read symbols to generate a corrected output. A decoded output is generated by replacing symbols at the beginning of the previous output with the corrected output.

Abstract: A heat sink assembly includes a heat sink and a clip. The clip includes a main body, two pressing portions extending outwardly from two opposite ends of the main body, two extension portions each extending upwardly from an outer end of a corresponding pressing portion, a locking arm extending slantwise and upwardly from an upper end of each extension portion, a U-shaped operating portion extending from a far end of the locking arm and a J-shaped hook extending from a free end of the operating portion. The operating portion is provided for receiving a depressing force acting on the clip for moving the hook to engage with a clasp on a printed circuit board.

Abstract: An exemplary heat dissipation device includes mounting feet and fasteners mounted on the mounting feet. Each fastener includes a shaft and two latching portions extending outwardly from an outer circumference of an end of the shaft. Each mounting foot defines a through hole allowing extension of the end of the shaft with two second portions. Each mounting foot defines two latching recesses in a surface thereof. Each of the latching recesses defines two blocking surfaces. When the end of the shaft with the latching portion extends through the through hole and beyond the surface of a corresponding mounting foot, the shaft is rotated with respect to the through hole so as to make the latching portion be received in the latching recesses. The blocking surfaces of the latching recesses stop the latching portions rotating with respect to the through hole to escape from the corresponding mounting foot.

Abstract: A heat dissipation device includes a base, a connecting member and a wire-shaped clip. The base thermally contacts with an electronic component mounted on a printed circuit board. The connecting member encloses the base therein and is secured to a periphery of the base. A plurality of clasps extends upwardly from the connecting member. The clip is clasped by the clasps of the connecting member to be attached thereto. The clip is pressed downwardly to engage with a plurality of hooks of a bracket around the electronic component of the printed circuit board to make the base intimately contact with the electronic component.

Abstract: A method for decoding tail-biting convolutional codes. The method includes initializing a correction depth, selecting a first starting state from a set of encoding states, and initializing a metric value for the selected starting state as zero and the other states as infinity. The input bit stream is read and a Search Depth Viterbi algorithm (SDVA) is performed to determine path metrics and identify a minimum-metric path. The ending state for the minimum-metric path is determined and the output for this ending state is identified as “previous output.” A second starting state is set to the ending state of the minimum-metric path, and symbols equal to the correction depth from the previous output are read. The SDVA is performed on the second set of read symbols to generate a corrected output. A decoded output is generated by replacing symbols at the beginning of the previous output with the corrected output.

Abstract: A method for decoding tail-biting convolutional codes. The method includes initializing a correction depth, selecting a first starting state from a set of encoding states, and initializing a metric value for the selected starting state as zero and the other states as infinity. The input bit stream is read and a Search Depth Viterbi algorithm (SDVA) is performed to determine path metrics and identify a minimum-metric path. The ending state for the minimum-metric path is determined and the output for this ending state is identified as “previous output.” A second starting state is set to the ending state of the minimum-metric path, and symbols equal to the correction depth from the previous output are read. The SDVA is performed on the second set of read symbols to generate a corrected output. A decoded output is generated by replacing symbols at the beginning of the previous output with the corrected output.

Abstract: A heat dissipation device includes a base, a connecting member and a wire-shaped clip. The base thermally contacts with an electronic component mounted on a printed circuit board. The connecting member encloses the base therein and is secured to a periphery of the base. A plurality of clasps extends upwardly from the connecting member. The clip is clasped by the clasps of the connecting member to be attached thereto. The clip is pressed downwardly to engage with a plurality of hooks of a bracket around the electronic component of the printed circuit board to make the base intimately contact with the electronic component.

Abstract: An electronic system includes a printed circuit board, a base, and a wire clip. The printed circuit board includes an electronic component and a plurality of hooks around the electronic component. The base thermally contacts the electronic component of the printed circuit board. Two clasps are formed at opposite ends of the base. The wire clip includes two pressing portions, two first connecting portions extending inwardly from first ends of the two pressing portions respectively, and two second connecting portions extending inwardly from second ends of the two pressing portions respectively. The first and second ends of the pressing portion are opposite. The pressing portions of the wire clip are clasped by the clasps of the base. The first connecting portions engage with two hooks of the printed circuit board, and the second connecting portions engage with another two hooks of the printed circuit board.

Abstract: A heat sink assembly includes a heat sink and a clip. The clip includes a main body, two pressing portions extending outwardly from two opposite ends of the main body, two extension portions each extending upwardly from an outer end of a corresponding pressing portion, a locking arm extending slantwise and upwardly from an upper end of each extension portion, a U-shaped operating portion extending from a far end of the locking arm and a J-shaped hook extending from a free end of the operating portion. The operating portion is provided for receiving a depressing force acting on the clip for moving the hook to engage with a clasp on a printed circuit board.

Abstract: This invention relates to a pharmaceutical composition for preventing and curing myocardium ischemia and reducing area of myocardial infarction, its pharmaceutical preparation and applications. The composition includes (a) levocarnitine or its derivatives, and (b) trimetazidine or its medicative salts. The quantity of levocarnitine or its derivatives, and trimetazidine or its medicative salts in the composition is effective amount for treating myocardial ischemia and reducing the area of myocardial infarction.

Abstract: A method for decoding tail-biting convolutional codes. The method includes initializing a correction depth, selecting a first starting state from a set of encoding states, and initializing a metric value for the selected starting state as zero and the other states as infinity. The input bit stream is read and a Search Depth Viterbi algorithm (SDVA) is performed to determine path metrics and identify a minimum-metric path. The ending state for the minimum-metric path is determined and the output for this ending state is identified as “previous output.” A second starting state is set to the ending state of the minimum-metric path, and symbols equal to the correction depth from the previous output are read. The SDVA is performed on the second set of read symbols to generate a corrected output. A decoded output is generated by replacing symbols at the beginning of the previous output with the corrected output.

Abstract: A method, and components for performing such method, is provided for synchronizing multiple user signals in a multi-user communication system. An interference matrix is generated based on time delay and frequency offset information for the active users accessing an OFDMA uplink receiver. User signals are received from the active users and are segmented into blocks, and the interference matrix is applied to each of the blocks. The received user signal is OFDM demodulated and un-used sub-carriers are discarded. Typically, the method includes also applying a factorization matrix formed by factoring a correction matrix created from the interference matrix and an inverse matrix formed based on the factoring results to the user signal blocks, e.g., the correction step includes multiplying each of the blocks from the user signal by each of these three matrices. The corrected user blocks are then concatenated to form a corrected vector signal.