4 results about "Coincidence" patented technology

Demultiplexer capable of coping with bit deviation of a comma code to suppress increase of operating frequency. The demultiplexer comprises a circuit (20) serially supplied with received data to perform serial-to-parallel conversion on the received data, a comma detection circuit (30) for activating a comma detection signal on detection of coincidence between the serial data transferred on parallel paths with clocks corresponding to received clocks halved in frequency and a comma code, and a control circuit (137-139, 40) for elongating and outputting the activated time duration of the comma detection signal by a predetermined time. The demultiplexer also includes a recovery clock generating circuit (50) composed of a state machine transferred between different states based on the frequency-halved clocks and which, on receipt of an output signal of a control circuit (40), varies the period of the recovery clock to output the resulting clock. The demultiplexer also includes first and second delay circuits (131-133, 134-136) and first and second shift registers (121-125, 126-130) for receiving outputs of the first and second delay circuits to convert outputs into parallel data. The demultiplexer also includes a latch circuit (70) receiving outputs of respective stages of the first and second shift registers in parallel and sampling parallel outputs with recovery clocks to output resulting parallel data. In case of occurrence of bit deviation, recovery clocks are elongated by a predetermined time duration for only one period depending on the state of bit deviation.

A method of coincidence detection and a tomography system using the same are provided. In the method and system, by combining original trigger signals and time mark information, at a time point of a rising edge of a system main clock, a combination of the trigger signals of a plurality of radiation detectors of the system is obtained, and a type of the combination of the trigger signals is determined according to a predetermined event relation. If the combination of the trigger signals belongs to an effective event, a time mark procedure is utilised for judging the trigger signals in the event, in which it is determined whether a difference between two time mark information respectively associated with the trigger signals of the two corresponding radiation detectors is within a coincidence time window or not, thereby judging whether the effective event is an annihilation event.

The invention provides a weighing test device and a bogie test system. The weighing test device comprises a base and a first supporting assembly capable of bearing a bogie wheel set, wherein the first supporting assembly comprises a first guide rail fixed on the base, a first supporting seat capable of linearly moving along the first guide rail, a first driving piece capable of driving the first supporting seat to linearly move, and a first driving cylinder capable of being contacted with the side surface of the wheel set; the first guide rail is arranged in a longitudinal direction; the first guide rail is connected with the first supporting seat; the first driving cylinder is arranged in a transverse direction; and the first driving cylinder is fixedly connected with the first supporting seat. Thus, automatic coincidence between the center of the tested bogie and the center of a test bench can be realized.