32results about "Conversion using stochastic techniques" patented technology

In a bit stream syntax containing compressed video slice data for compressed video data of a slice structure, a slice header for compressed video slice data has attached thereto a slice start code, a register reset flag indicating whether a register value, which designates a status of a codeword occurring in an arithmetic coding process, should be reset in the next transmission unit, an initial register value which indicates a register value to be used to start arithmetic coding / decoding to build / decompose the next transmission unit, only when the register reset flag indicates that the register should not be reset.

Aspects of a method and system for a successive approximation analog-to-digital converter with dynamic search algorithms are provided. In some embodiments, a successive approximation analog-to-digital converter includes a digital-to-analog converter, a comparator, and a search and decode logic modules which cooperate to generate a digital output code representative of the analog input voltage based on a dynamic search algorithm. The dynamic search algorithms may alter a sequence of reference voltages used to successively approximate the analog input voltage based on one or more characteristics of the analog input voltage.

The invention discloses a stochastic time-digital converter, which comprises an input switching circuit, a stochastic time-digital converter (STDC) array and an encoder. A clock circuit inputs two clock signals into the two input ends of the input switching circuit respectively. The input switching circuit transmits the two clock signals input by the clock signal to the two input ends of the STDC array in form of alternate transposition, and simultaneously outputs a triggering control signal to the encoder. Each comparator in the STDC array independently judges the speed of each clock signal, and transmits a judgment result to the encoder for summarization. The encoder outputs the magnitude and plug-minus of a phase difference between the two clock signals. The number of equivalent comparators in the STDC array is multiplied by utilizing the stochastic characteristics of the STDC to maximally eliminate device mismatching and the influence of a process, power voltage and temperature on the circuit; and compared with the conventional STDC circuit, the STDC has the characteristics of hardware saving, low power consumption and small area.

Systems and methods for flow sensing in a conduit are provided. One system includes a flow disturber disposed in a flow conduit and configured to impart a flow disturbance to the fluid flow. The system further includes a plurality of flow sensors disposed in the flow conduit and responsive to flow characteristics in the flow conduit. The system also includes a frequency resolver configured to determine frequency information related to the fluid flow based on the flow characteristics. The frequency resolver uses one or more time sample windows to select data samples for use in determining the frequency information, wherein a length of one or more of the time sample windows is based at least in part on the flow characteristics. The system additionally includes a processor configured to determine a flow rate of the fluid flow in the flow conduit using the frequency information.

A stochastic signal generation circuit includes a signal output circuit and a signal processing circuit connected with the signal output circuit. The signal output circuit includes two matching semiconductor components, wherein the signal output circuit detects a slight mismatch between the two matching semiconductor components, converts the detected slight mismatch into a corresponding electric signal, amplifies the electric signal, and outputs an analog voltage signal. The signal processing circuit converts the analog voltage signal into a stochastic digital signal. Also, a method for generating a stochastic signal is provided. The present invention decreases the cost of the integrated circuit, and better ensures the information security of the electronic products.

A digital slope analog to digital converter device includes a capacitor array circuit, a switching circuitry, comparator circuits, encoder circuitries, and a control logic circuit. The capacitor array circuit generates a first signal according to an input signal and switching signals. The switching circuitry generates the switching signals according to an enable signal and a first valid signal in the valid signals. Each of the comparator circuits compares the first signal with a predetermined voltage, in order to generate a corresponding one of the valid signals. Each of the encoder circuitries receives the switching signals according to a corresponding one of the valid signals, in order to generate a corresponding one of sets of first digital codes. The control logic circuit performs a statistics calculation according to the sets of first digital codes, in order to generate a second digital code.

A stochastic time-digital converter (STDC) including an input switching circuit, an STDC array, and an encoder. A clock circuit inputs two clock signals into two input terminals of the input switching circuit; the input switching circuit transmits the two clock signals in a cyclic cross-transposition form to two input terminals of the STDC array, and simultaneously outputs a trigger control signal to the encoder; each comparator in the STDC array independently judges the speeds of the two clock signals and sends the judgement results to the encoder for collection and processing; and the encoder outputs the size and positivity or negativity of the phase difference of the two clock signals. The technical solution utilizes the stochastic characteristic of the STDC to double the number of the equivalent comparators in the STDC array, eliminating the effects on the circuitry of device mismatching and processes, power supply voltage, and temperature.

A method and system for encoding an analog signal on a stochastic signal, the encoded signal then converted to a digital signal by an analog to digital converter, the analog to digital converter thereafter decoding from the encoded signal a digital signal, which corresponds to the analog signal. The stochastic signal may be a noise signal shaped to a Gaussian normal curve. An encoding process is performed by a multiplication circuit, which multiplies the stochastic signal by the analog signal, producing a product signal for an analog to digital conversion. During analog to digital conversion, the product signal is decoded. The decoding is performed using an arithmetic operation, which may be a Root Sum Square function or a Root Means Square function. The decoded signal is then mapped to account for offset error, gain error, and endpoint adjustment. The result is a decoded digital signal corresponding to the analog signal.

The invention discloses a real-time processing method for dynamic signals of inertial sensors. Firstly, the random sampling technology is used to fully reduce the sampling data of the signal; The algorithm completes the accurate reconstruction of the original signal to improve the output accuracy of the dynamic signal of the inertial sensor. Compared with the traditional method, the invention can effectively improve the precision of the output signal while greatly reducing the sampling data of the signal, so as to realize the real-time processing of the dynamic signal of the inertial sensor.

The invention discloses a gun for laser stimulation shooting training, comprising a lower gun body and an upper gun body, wherein the lower gun body is installed with a laser transmitter integration;a reversing lever and a reversing spring are installed in front of the laser transmitter; the hole at the lower part of the upper gun body is sleeved on the reversing lever and can slide along the upper plane backward; a trigger is installed below the lower gun body and a hammer is arranged at the rear part of the lower gun body; a striker is arranged between the hammer and the laser transmitter;a gun disassembly switch knob is installed at the upper edge of the lower gun body, and a clip is arranged in the handle of the lower gun body; and the laser transmitter integration comprises a limited block, a limited rod, a return spring, an insulating bush, a contact switch, a rack, a laser transmitter and a laser transmission port. The gun for laser stimulation shooting training of the invention has high stimulation, can be disassembled like real guns, has the processes of bullets filling and hammer percussion, and has the use feeling extremely similar to real guns; and bullet falling points are stimulated by laser, therefore, the security is extremely high, the cost of combination training is low, and the training effect is good.