Abstract: An adjustable ratio divider comprises a controllable gate connected in series with a divider for passing a clock signal in pulse form whose frequency is to be divided. A means is provided for controlling the gate to subtract a selectable number (including zero) of clock pulses from the clock signal to control the division ratio of the divider.

Abstract: A receiving antenna for use in proximity to an antenna having a circular radiating magnetic field includes at least one antenna having a null spatial sensitivity pattern along at least one axis, oriented with the circular radiating antenna located in said null pattern. In a preferred embodiment, the antenna having spatial sensitivity is three orthogonally oriented loop antennas, arranged to be insensitive to signals from the circular radiating antenna and sensitive to TE and TM signals from a remote location.

Abstract: A driver circuit for an actuator senses the phase difference between a position request signal to the actuator and a feedback signal from the actuator. A first error signal is indicative of the phase difference when the feedback signal lags the position request signal, and a second error signal is indicative of the phase difference when the feedback signal leads the position request signal. The error signals are amplified in time to provide output drive signals that control four switches which are arranged so that when certain combinations of switches are closed, the actuator will increase or decrease its position, thereby driving the error signal to ZERO. The output drive signals are limited in time so that the loss of an input (position request signal or feedback signal) does not cause an output drive signal hardover and, consequently, does not cause an actuator hardover.

Abstract: Logic analyzer adapter includes a time measuring adapter. Only a subset of the input channels of the signal analyzer are used to store input data when an event occurs, i.e., when one or more of the binary input signals change their value. A time counter is provided for measuring the time that has elapsed between two consecutive events. The contents of the time counter are transferred to the logic analyzer on the remaining input channels. In another mode of operation, the signal on a predetermined input channel is used to control the storing operation. The time counter is reset after each storing operation. In still another mode of operation, the signal on a predetermined channel can be used to inhibit or to allow the storing of the signals on the remaining input channels.

Abstract: Serial to parallel conversion circuitry achieves phase synchronization and signal bit sampling of received asynchronous serial data through use of a gate enable delay line oscillator having a selected response time, and selectably enabled in the presence of the received serial data to provide a sampling clock signal for shifting the serial data into register for parallel formatting at a frequency equal to the line frequency.

Abstract: This invention relates to a process and means for rapid microwave imaging using UHF waves transmitted by an antenna toward a body to be scanned. According to the invention, body O to be scanned is placed in front of a transmitting antenna A and various signals forming the various points of the image are analyzed in a collector-unit RC consisting of a diode-conductor panel 1 and a wave-guide stack 2 and are then transmitted to a receiver R.

Abstract: A signal transition enhancement circuit detects transitions in the magnitudes of successive sampled data signals and substitutes certain data samples preceeding and following the transition for certain other data samples within the transition, thereby to decrease the number of data samples required to complete the transition. As a result, the rise and fall times of signals developed in response to the sampled data signals will be reduced. A transition is detected when respective sampled data signal magnitudes within two groups of successive samples are respectively relatively close in magnitude and the magnitudes of two selected signal samples differ by at least a predetermined amount.

Abstract: A hand-held tape measure is provided which includes a conveniently sized housing with an elongated measuring tape suitably coiled on a rotatable shaft mounted within said housing. A sprocket arranged to engage the surface of the tape without slippage is mounted within the housing and drivingly connected to an encoding disk whereby the rotation of the disk is directly proportional to the linear movement of the free end of the tape. The disk is divided into an equal number of alternating transparent and opaque segments and two energy sensitive coupler switches are mounted in conjunction with the disk to provide electrical outputs indicative of the adjacent disk segment to indicate the rotation of the disk. The switches are offset circumferentially to provide a phase differential which indicates whether the tape is extending or retracting with respect to the housing. The output from the switches is fed to an electronic circuit which counts and divides the output pulses with the result digitally displayed.

Abstract: An apparatus for counting numbers of microscopic corpuscles such as blood cells, comprising an optical system, a driving mechanism, a photoelectrical convertor means and a counter means. The optical means is adapted to illuminate a sample containing the corpuscles so as to irradiate magnified images onto a charge coupled device (CCD) as the convertor means having elements lined up in a row in an X-direction perpendicular to a Y-direction in which the sample is moved by the driving mechanism whereby X-directional scanning is automatically executed by the CCD without moving the sample while Y-directional scanning is conducted with a sample holder continuously moved by said mechanism comprising a drive motor and a cooperating spring. The CCD is adapted to detect the number of corpuscle images contained in each scanning line in the X-direction and thereby to produce electric signals fed to the counter means, which comprises electronic circuits for summing up these signals in respect of Y-direction.

Abstract: An apparatus for monitoring the operation of a press provides outputs indicating the total number of hits and the operating speed of the press as well as the total amount of product produced by the press.Specifically, an N-Pulser is driven by a proximity switch coupled to the press so as to fill an accumulator that maintains a running total of the amount of product produced. The N-Pulser includes a gate that has an enabling input coupled to the proximity switch and a signal input coupled to a clock. When the gate is enabled the output of the clock is permitted to pass through the gate to the input of a counter, the counter having been preset to a state determined by the amount of product produced during each cycle of the press. The gate is disabled when the counter has counted to a predetermined, ZERO, state. The output of the gate is in a parallel fashion coupled to the accumulator, so that a specified number of pulses are dumped into the accumulator as a result of each cycle of the press.

Abstract: In a first searching mode of the control program for the microprocessor, the microprocessor starts with a selected clock input and associated delay circuit and sets the delay circuit to an initial clocking point which is intermediate to the minimum and maximum delay points. The microprocessor then, at each pass of the control program, successively increments the delay period interposed by the delay circuit to cause the clock pulse to arrive later and later in time at the clock input until the associated circuit fails, to indicate the late clocking failure limit. In the second searching mode of the microprocessor control program, the microprocessor starts at the late clocking failure limit and at each subsequent pass of the program successively decrements the delay period interposed by the delay circuit to cause the clock signal to arrive earlier and earlier in time until the semiconductor device fails again, to indicate the early clocking failure limit.

Abstract: An antenna arrangement for personal radio transceivers in which a main antenna extends from the housing of the transceiver which is excited by a high frequency connector thereof, includes an auxiliary antenna which is coupled to a cold terminal of the connector to form a counterweight for the main antenna. Both the main and auxiliary antennas are resonant and shorter than the quarterwavelength, whereby the housing is placed at a potential minimum and the effects of the close presence of a human body on radiational properties for the arrangement will be reduced.

Abstract: The disclosure relates to sheet separating device for a stack counting apparatus including a counting head to traverse a corner of a stack and having a horizontal suction blade with a suction orifice on its upper surface for insertion in the stack and oscillatable about a horizontal axis to separate a corner of a sheet in the stack adhered by the suction port to the blade from the next sheet. A wiping pin is driven in an elongate orbit around the blade from the trailing edge thereof over the upper surface to the leading edge and along the underside of the blade to transfer a corner of a sheet adhered to the upper surface of the blade from the upper surface to the lower surface. A counting device is arranged to count the number of sheets transferred by the pin.

Abstract: The specification discloses an electronic manually operated blood cell counter including continuous count capability in response to a single key depression for recording large number of similar cells during a differential count. More specifically, the counter includes microprocessor control for periodically incrementing a counter in response to sustained depression of a manually actuated counting switch. The control is adjustable to vary the speed at which the counter is periodically incremented to accommodate individual laboratory technicians.

Abstract: An apparatus and method for counting the number of cycles of a sensor signal and of a reference signal that occur during respective time intervals associated with a sampling interval defined by a sample signal. Sensor and reference gate signals are produced and respectively define sensor and reference intervals. The sensor interval begins and ends synchronously with respect to the sensor signal, and the reference interval begins and ends synchronously with respect to the reference signal. The sensor, reference and sampling intervals are approximately coextensive with one another. Cycles of the sensor and reference signals are counted during the sensor and reference intervals, respectively. The process may be repeated for a plurality of successive sampling intervals.

Abstract: An improved diversity communication system which has a single micro-strip antenna has been found. The micro-strip antenna according to the invention comprises a thin dielectric layer sandwiched by a ground conductor plane and a radiation conductor plane, a pair of feed points on the radiation conductor plane through the holes on the ground conductor plane, and said feed points being positioned so that a line between a first feed point and a center of the radiation conductor plane is substantially perpendicular to a line between a second feed point and a center of the radiation conductor plane. Each of the feed points is coupled with each branch input of a diversity receiver, and those feed points operate like separated two antennas, which have a pair of perpendicular directivities. Preferably, a radiation conductor plane is circular with a plurality of slots along the periphery of the same. The feed points of the present micro-strip antenna have little correlation between the same.

Abstract: An improved paper feeding device, for example, for a copying machine is provided and is capable of warning a user of the status of available copy paper sheets. A movable support tray can be monitored to provide a measurement of the total initial height of the paper stack and subsequent movements of this paper stack to introduce individual copy paper sheets into a paper transport system can be correlated with the actual number of sheets that are transported. From these monitored values, it is possible to calculate the number of sheets remaining on the stack and to provide an audible, vocal or visual display of the actual number or relative condition to warn a user.

Abstract: A Level Sensitive Scan Design (LSSD) Shift Register Latch pair implemented in current switch logic is disclosed. The arrangement is characterized by the logic used to control the L1 and L2 latches being implemented in Differential Cascode Current Switch logic and the L1/L2 latches being coupled to only one current source. A "merged" L1/L2 latch arrangement employing only one current source is provided for an LSSD testing environment.

Abstract: Digital circuitry adaptable for controlling dwell in a spark and dwell ignition control system is disclosed. Maximum advance and reference sensors are utilized to produce pulse transitions which determine positions of maximum and minimum possible advance for spark ignition with respect to the position of the engine crankshaft. For each maximum advance sensor pulse transition a main counter starts a sequential running count of speed independent clock pulses wherein the maximum count obtained by the counter is related to engine crankshaft speed. The running and maximum counts of the main counter are utilized by dwell circuitry to determine the time prior to the next maximum advance pulse at which spark coil excitation should occur.

Abstract: A pressure-actuated switch mounted in the handle of a self-inking stamper is actuated by a stationary plunger assembly which extends into the handle and pressures the switch when the stamp element is moved into contact with a surface being marked. Actuation of the switch advances a counting circuit remotely located inside the lid of a lockable box. A circuit times the stamp element in the stamping position to avoid multiple markings on a single count.