摘要:
A scalar circuit includes serially connected inverters connected to one another via a plurality of connecting lines. A plurality of input lines are provided to the input of a first inverter in the serially connected inverters. A plurality of feedback lines are provided between the input and output of each inverter. A capacitance and a switch is provided in each connecting line, input line and feedback line. The switch connects a terminal of the capacitance to ground while simultaneously disconnecting the ends of that line from one another. The switches are cooperatively actuated so that the effective composite capacitance in the feedback lines and the connecting lines are substantially equal. In addition, the composite capacitance of in the input lines and the connecting lines are substantially equal.
摘要:
A pattern matching system includes a circuit that matches an input image with a template based on a correlation function. The circuit has a structure which makes it particularly suitable for implementation in Large Scale Integration (LSI) technologies. A pattern matching circuit according to this invention sets up a threshold value of a correlation coefficient and evaluates the following formula,E=N.sup.2 {.SIGMA.(f.sub.i -f.sub.m) (g.sub.i -g.sub.m)}.sup.2 -p.sub.th.sup.2 N.sup.2 .sigma..sub.f.sup.2 .sigma..sub.g.sup.2where N is a number of input data points. f.sub.1 is an input data point. f.sub.m is a mean value of input data points. g.sub.1 is a template data point. g.sub.m is a mean value of template data points. .sigma..sub.f is a standard deviation of input data points and .sigma..sub.g is a standard deviation of template data points in a range over a threshold value.
摘要:
A method for directly multiplying an analog and a digital data without converting from analog-to-digital or digital-to-analog. An analog input voltage is provided to a plurality of switches. A digital input voltage including bits b.sub.0 to b.sub.7 which are provided as control signals to the switches. The switch output is integrated giving weights by means of a capacitive coupling, and a sign bit is added by a capacitive coupling CP with a double weight of the most significant bit ("MSB") of the digital input.
摘要:
A circuit calculating the minimum value comprising a plural number of pMOS, wherein source of the plural pMOS are connected to a power source with lower voltage than a drain, the drain is grounded through high resistance, in input voltage is connected to each pMOS, and a common output is connected to a drain of each pMOS.
摘要:
A counter circuit converts a full count to a zero count and a zero count to a full count. An incrementing counter circuit according to the present invention has a plurality of threshold circuits with stepwise thresholds. An output of the highest threshold circuit is used as a cut off signal for other threshold circuits. A decrementing counter circuit according to the present invention has a plurality of threshold circuits from the lowest threshold to the highest thresholds. An output of the lowest threshold circuit is used as a closing signal for other threshold circuits.
摘要:
The D/A converter comprises: a digital counter receiving a reference clock pluses and a reference voltage as a start signal so as to output a stop signal when the digital counter counts the reference clock pulses until a predetermined number; and a number is reached, and an RC circuit having a resister and a capacitor receiving the reference voltage so as to be charged by a predetermined time constant until the stop signal is inputted to the RC circuit, whereby the RC circuit is charged up to a voltage corresponding to a time distance between the start signal and the stop signal.
摘要:
An interface circuit for reducing the number of data pins in an LSI circuit. The interface circuit, converts a multivalue input signal of a predetermined level into a binary value or converts a binary output signal into a multivalue of signal a predetermined level and is used as an interface for transferring data in LSI applications.
摘要:
A MOSFET wherein cell includes a MOSFET transistor having a gate connected to an input voltage signal for integration, a source grounded through a high resistance, and a drain connected to a power source. An output capacitor is connected to the source of the MOSFET transistor to complete the MOSFET cell.
摘要:
A multiplication circuit for multiplying an analog input by a digital input. The digital input has a plurality of bits. The circuit has a circuit input terminal for receiving the analog input and a circuit output terminal for outputting the results of multiplication of the analog input by the digital input. The circuit also has a plurality of capacitances and a plurality of switching devices.
摘要:
An absolute value circuit for analog type processing combines an analog inverter circuit and a maximum circuit. The inverter circuit uses an operational amplifier comprised of CMOS inverters which are connected in a cascade with a gain of 1. The maximum circuit includes a pair of nMOS transistors, the source follower outputs of which are connected to a common output.