Abstract: An electromagnetic counter with a rotary counter and an electromagnetic operator for indexing the counter having a generally U-shaped core plate mounted in opposed pockets in parallel end supports of a plastic support frame, an energizing winding on one of the parallel legs of the core plate, and a pivotal actuator connected for indexing the counter having a ferromagnetic armature member positioned aside and extending transversely of the parallel legs of the core plate. A ferromagnetic insert having a preselected configuration and permeability is inserted through a slot in the support frame and press fit between the parallel legs of the core plate to provide a saturable magnetic shunt for preventing electromagnetic operation of the counter by electrical noise spikes of relatively short duration and to provide an air gap filler for reducing the incipient air gap of the electromagnet.

Abstract: An electronic, digital, time fuze is disclosed having a counter which may be initially preset mechanically before flight, and which may subsequently be changed during a predetermined interval during flight, by a radar command link. Several mechanical presetting mechanisms for the counter are also disclosed.

Abstract: A data interface between a plurality of data sources and a printer wherein the interface can accept data from such sources on a pre-established priority basis. The priority of any source is determined by the time relationship of its bid strobe signal to a synchronizing signal. The bid strobe signals are timed to occur at different time intervals in accordance with the pre-established priority basis.

Abstract: By creating at least two related raw counts n and n.sub.i, of particles in a fluid suspension as at least two physically derived particle counts, there can be developed a mathematic function relationship by which the "scanning constant" k of a particle analyzer, for example of a Coulter type, can be factored out and a resultant equation obtained. The resultant equation is employable, for instance, in operating upon the input n and n.sub.i raw counts for generating the ultimately desired corrected particle count N.sub.i which largely eliminates particle coincidence errors. The disclosure encompasses several methods and apparatuses by which the raw counts are developed and by which the related mathematic functions are defined and then employed to obtain corrected counts. Specially considered are multichannel analysis and optical apparatus for facilitating the count correction.

Abstract: By creating at least two related raw counts N.sub.1 and N.sub.2, of particles in a fluid suspension either as two physcially derived particle counts, or one physical count and an artificial count derived from the physical count, there can be developed a mathematic function relationship by which the "scanning constant" K of a particle analyzer, for example of a Coulter type, can be factored out and a resultant equation obtained. The resultant equation is employable in operating upon the input N.sub.1 and N.sub.2 raw counts for generating the ultimately desired corrected particle count N.sub.0, which eliminates particle coincidence errors. The disclosure encompasses several methods and apparatuses by which the raw counts are developed and by which the related mathematic functions are defined and then employed to obtain corrected counts.

Abstract: An odometer that employs a pulse generator, the pulses of which correspond to a given increment of linear distance. It has a correction circuit which may be set to either add or subtract a pulse after a predetermined number of pulses have been counted. This corrects the linear distance measured for any cumulated total. Consequently, inaccuracies in the dimension represented by each pulse will be periodically compensated for by the added or deleted pulse.

Abstract: A utility or service meter including print-out means stored in a tamper-proof zone of a housing and presentable to a record card insertable in the housing to print the accumulated total of the units of the service consumed.

Abstract: A resettable electronic counter employing an integrated solid state calculator circuit element, or chip, includes counter reset circuitry for automatically resetting the counter. The calculator circuit provides timing signals and is responsive to timing signals selectively connected to an arithmetic and control section thereof for clearing a count stored in registers thereof and display means external thereto, for storing a selected count in the registers, and for cumulatively adding indexing signals to the stored count. The counter reset circuitry includes control logic and a sequence counter actuated by a reset signal to generate a series of step signals. The step signals and certain timing signals are connected to the control logic which is in turn connected to the arithmetic and control section of the calculator circuit.

Abstract: A mechanical operation counter for use in association with flexible slide-wire cable utilized for remotely manually controlling the operation of a mechanical device to which the cable is attached. A normally open electrical switching device comprising a microswitch and a slide bar fixed with respect to the cable slide-wire and adapted to actuate the microswitch each time the remote end of the control wire is pushed in or out with respect to its outer sleeve during a manually controlled operation, is connected in series with an energization circuit for an electro-mechanical counter serving to record the number of individual operations being performed upon the controlled mechanism by such manual actuation of the cable slide-wire.

Abstract: The invention relates to a computer in which control means provide for high speed context switching. In a more specific aspect, the invention involves an arithmetic unit in which a workspace pointer register and control means operable on an interrupt store the contents of the workspace pointer in an element of a workspace in memory designated by the interrupt program and store in the workspace pointer register the address of the first element of the interrupt program workspace.A first register stores the address of a first element of a set of dedicated workspace elements in main memory.A second register stores the memory address of a current instruction of a problem program.

Abstract: A self-balancing capacitance bridge-type proximity detector is provided having a probe in one leg of a bridge network and a variable capacitor in the form of a varactor effect tuning diode in the other leg of the bridge network. A high frequency oscillator is coupled to the bridge network and the output of the network from the two legs is equal when the bridge is in a balanced condition. The outputs of the bridge are applied to a differential amplifier for producing an output therefrom on an imbalance of the bridge network which is caused by a metallic object which is to be detected contacting or coming in close proximity with the probe. The output of the differential amplifier is fed back to the varactor tuning diode, changing the capacity thereof to rebalance the bridge network. The output of the differential amplifier is also fed to a shaper circuit and from there to a counter for counting the imbalances of the bridge caused by objects being detected coming into contact or close proximity with the probe.

Abstract: An electronic digital timer for an electronic range wherein the desired time of cooking is determined by a time setter; the time of cooking thus set is indicated in a digital fashion; a counter counts the number of pulses generated when the electronic range commences heating; and the heating operation is brought to an end when coincidence takes place between the number of counts made by the counter and a number determined corresponding to the preset time.

Abstract: A threshold level is automatically varied to follow variations in an input signal reference level. In the disclosed embodiment the reference level is that produced by photodiode-amplifiers in an OCR machine when viewing white or non-character portions of a page, the reference level varying as a function of the change in the length of the optical path during a scan across the page. The threshold level is compared to the input signal level to determine whether a character segment is viewed by the photodiode. Variation of the threshold level is achieved by low pass filtering individual output signals from some of the photodiode-amplifiers and then averaging the filtered signals to provide the adjusted threshold.

Abstract: A copying system incorporating means enabling the user to automatically recover from a jam or machine malfunction in the event the copy program is prematurely stopped with the result that some of the copies then in process are lost. A first counter means counts copies processed while a second counter means counts copies started. In the event of a premature stop, the second counter means is automatically reset to the same count as the first counter means thereby programming the system to make up copies lost as well as copies remaining on the original program. If the copying system includes a sorter, the second counter means is programmed to count copies when sorting is completed.If the copying system has an automatic document handler, a third counter means records originals brought to the platen and a fourth counter means records originals whose copying has been completed.

Abstract: An electronic counting device for displaying the measurement of a quantity includes a pulse counter which receives a supplementary pulse every time the pulse counter stands at any one of a predetermined series of numerals. The natural counting base of the counter is thus effectively modified so that the displayed output is determined according to a different counting base.

Abstract: Apparatus for use in combination with multiple inductive loops for detecting metal objects, e.g. vehicles, in the immediate vicinity of each of said loops. Each loop may, for example, be a coil of wire buried in a roadway in a plane parallel to the roadway surface. A common oscillator circuit is operatively connected to each loop on a time shared basis with the frequency of oscillation at any time being determined by the inductance of the connected loop. The inductance in turn is dependent on whether or not a vehicle is over the loop. Successive scan cycles are defined with multiple loop phases occurring during each scan cycle.

Abstract: Provides apparatus for partitioning page frame hardware components of a main store into four partitions. The apparatus can pack small fixed size segments into each of the four partitions and can pack the first part of a large segment, or a varying-size segment into the last partition of a page frame. Hardware is disclosed for executing a create segment instruction which will pack its created segment into the same page frame with a specified existing segment. The apparatus also generates and updates a header for any page frame which is to contain a plurality of segments. The embodiment comprises comparators, registers, and their connecting gating hardware for generating the electrical signals which create the segments and page frame headers.Other hardware modifies each address in order for it to access a required partition with a selected page frame.

Abstract: A mark counter is able to count frame marks in one film margin adjacent to corresponding frames and group marks in the other film margin adjacent to the first frames of each group of frames regardless of which margin contains the frame marks and which margin contains the group marks. The marks in both margins are sensed, and analogous signals are fed into an OR gate and an AND gate. The output of the OR gate is the logical sum of the number of sensed frame and group marks which is numerically equal to the number of sensed frame marks, and the output of the AND gate is the logical product of the number of sensed frame and group marks which is numerically equal to the number of sensed group marks.

Abstract: Two-dimensional data may be acquired at extremely high rates by means of a linear sensor array, and ganged shift registers with each sensor associated with at least one shift register. The state of each sensor is sampled periodically in accord with a selected, relatively high clock frequency and each sampling is sequentially recorded in the shift register associated with a specific sensor. A first dimension is provided by the linear nature of the sensor array and the second dimension is supplied by the sampling clock frequency as a subject moves past the sensor array. In a more advanced embodiment, the sampling operates only during the occurrence of an event and data is cyclically recorded in one group of shift registers at a rapid rate while previous data is unloaded from an alternative group of shift registers at a conventional rate.

Abstract: The measurement of a tire is displayed during rotation of the tire and buffing thereof by an apparatus and method in which a first train of electrical pulse signals are generated which characterize the rotational speed of the tire, a second train of electrical pulse signals are generated which characterize the linear surface speed of the crown surface of the tire which is being buffed, and the ratio of pulses in the two trains is displayed as indicative of a measurement of the tire.