Patents Examined by John P. Vandenburg
  • Patent number: 4052596
    Abstract: A hematology analyzer provides a pulse signal in which the number of pulses manifests the number of blood cells in a sample volume of blood and the magnitude of each pulse manifests the size of each such blood cell. The analyzer also provides an analog voltage manifesting the hemoglobin content of the blood sample. Means responsive to the pulse signal provide an analog voltage manifesting the hematocrit of the blood sample and an analog voltage manifesting the number of cells. An analog-to-digital converter is switchably responsive to the analog hemoglobin, hematocrit and cell count signals to provide required ratios reflecting the mean corpuscular volume, mean corpuscular hemoglobin and mean corpuscular hemoglobin concentration of the blood sample.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: October 4, 1977
    Assignee: Hycel, Inc.
    Inventor: Howard Andrew Vick
  • Patent number: 4021644
    Abstract: A circuit for monitoring the sequence of events at a cashier checkout center and for providing a cashier violation signal after a preselected number of customers have passed through the checkout center without corresponding customer transactions having been entered by the cashier.
    Type: Grant
    Filed: October 16, 1975
    Date of Patent: May 3, 1977
    Assignee: Automatic Parking Devices, Inc.
    Inventor: Daniel M. Dreslinski
  • Patent number: 4020466
    Abstract: This hierarchical memory system has two memory units on each level. One of the units called the data store contains all the data at that level of the memory. The other unit called the copy back store contains all the changes that have been made in that data either by addition or modification. While the data store is interfaced with the next higher level in the hierarchical memory system or with the processing units for the data processing system, the second or copy back store can transfer the changes made in the data into the next lower level in the memory hierarchy system if the copy back store is free and the data store in the next lower level is not involved in transferring data up the hierarchy. The data store and the copy back data store in each level are on two different power systems and transfers of the changes to the next lower level are done in the order in which the change entered in the copy back store with the oldest entry being the first to be copied back.
    Type: Grant
    Filed: July 5, 1974
    Date of Patent: April 26, 1977
    Assignee: IBM Corporation
    Inventors: Vincent Anthony Cordi, Bruce Adam Edson
  • Patent number: 4019028
    Abstract: A printing machine includes a counter control system which has a plurality of counters, the system being programmed for any one of various billing schemes by inserting an inexpensive field changeable billing code circuit board into the machine. The operations of the counters vary, depending upon which billing code circuit board is inserted, each counter recording information which is needed for the billing scheme selected.
    Type: Grant
    Filed: November 25, 1974
    Date of Patent: April 19, 1977
    Assignee: Xerox Corporation
    Inventor: Demetrios Polyzoes
  • Patent number: 4012717
    Abstract: Two microprogrammed processors of identical hardware and software facilities are synchronously operated for exchange operations with a plurality of external store and peripheral units. The exchange connections from the processors to the external units pass through gate circuits one of which only is operative at a time. Each processor has an output at which all processed words, whether instructions, microinstructions, operands or results are successively available. Comparator means permanently compare such words from the two processors and, when a mismatch occurs, block the gate circuits and their own comparison outputs and control execution in both processors of a failure detection and check up routine. Each processor includes exchange control claiming and exchange control disclaiming outputs.
    Type: Grant
    Filed: April 23, 1973
    Date of Patent: March 15, 1977
    Assignee: Compagnie Internationale pour l'Informatique
    Inventors: Lucien Censier, Alice Maria Recoque
  • Patent number: 4001552
    Abstract: Method and apparatus for measuring the number of layers of a web material of known thickness wound on a storage or take-up reel. The method and apparatus are based on the principle that, at a relatively large radius, the loci of layers of a thin web wound on the reel approximate a family of concentric circles having radii respectively successively increasing by a length equal to the web thickness, t, whereby the difference in circumferences between adjacent web layers is substantially constant and equal to 2.pi.t. Tachometer pulses are generated in response to linear movement of the web and reset pulses are generated in response to rotation of the reel. The tachometer pulses, either prerecorded on a track of the web or generated by a code wheel rotating with the moving web, are spaced apart from each other by 2.pi.t. With that spacing, each layer of the web contains one pulse more than an immediately preceding layer.
    Type: Grant
    Filed: April 4, 1975
    Date of Patent: January 4, 1977
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Ronald M. Muller
  • Patent number: 4000400
    Abstract: The number of persons or objects entering and leaving a space such as a room are accurately counted in response to a bidirectional detector unit through which a person or object must completely pass to register a count, and means are provided to disregard any change in the detector unit unless the person or object goes completely past the bidirectional detector, said counting means being connected to a structure whereby when the space is indicated to be completely unoccupied the illumination of the space and/or the temperature modification of the space will be automatically extinguished or modified to more economical levels.
    Type: Grant
    Filed: April 9, 1975
    Date of Patent: December 28, 1976
    Inventor: Clarence L. Elder
  • Patent number: 3997764
    Abstract: Method for the conversion of a frequency into a number, characterized in t use is made of a reversible counter driven by a logic control circuit receiving clock pulses and a frequential input signal formed by pulses having a period of a in addition to a stochastic feedback signal representing the required number, where the required number is a number which depends on the frequency of the input signal and is generated by this method. The logic control circuit makes the counter count up the clock pulses during the time periods a and makes it count down the pulses of the stochastic signal during all other times. The stochastic signal stored in the reversible counter represents a number which depends on the frequency of the frequential input signal being sampled.
    Type: Grant
    Filed: August 23, 1974
    Date of Patent: December 14, 1976
    Assignee: Societe Generale de Constructions Electriques et Mecaniques (ALSTHOM)
    Inventors: Jean-Claude Belmonte, Jean-Jacques Hirsch, Pierre Rassat
  • Patent number: 3996561
    Abstract: A priority determination technique for use in a data processing system having a data processor coupled with a plurality of peripheral interface logic elements or boxes for transferring data to such boxes serially by bit, such interface boxes coupled along a daisy chained serial data transfer bus. Each of such boxes is coupled to interface with one or more peripherals for transferring data with the bus. Each interface box includes a priority network including a shift register for receiving bits of the data, wherein a mark bit is initially shifted through the shift register prior to the shifting of the data therein. The interface box address is compared with the respective stages of the shift register and generates a priority signal when the stage containing the mark bit compares with the box address. The priority signal is utilized to provide such highest priority interrupt requesting interface device with sole access for the next data transfer wth the processor.
    Type: Grant
    Filed: April 23, 1974
    Date of Patent: December 7, 1976
    Assignee: Honeywell Information Systems, Inc.
    Inventors: Krzysztof Kowal, Leon S. Malone, Jr.
  • Patent number: 3990053
    Abstract: A program selector in an electronic calculator has a number of formulas which are printed in human readable form. When a formula is selected by the operator a machine readable representation of the formula is positioned adjacent a transducer. The transducer generates an electrical signal which represents an identification of the particular mathematical formula or other type of program to be executed by the electronic calculator. The electrical signal is decoded by a decoder which generates a storage address for the starting point of the formula or program to be executed.
    Type: Grant
    Filed: October 15, 1973
    Date of Patent: November 2, 1976
    Assignee: International Business Machines Corporation
    Inventor: Bob O. Evans
  • Patent number: 3988601
    Abstract: Shift register data reordering system for reordering serial input data to an output data sequence according to a desired schema, using varying length registers with selective gating.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: October 26, 1976
    Assignee: RCA Corporation
    Inventor: Richard Prather Perry
  • Patent number: 3986003
    Abstract: A solid state switch to step through its positions automatically so long as n activator plate is touched, or which can be stepped up or down with each touch, as well as switch both digital and analog signals.
    Type: Grant
    Filed: March 21, 1975
    Date of Patent: October 12, 1976
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Manfred K. Pruessner
  • Patent number: 3983367
    Abstract: A sheet counting machine has a sheet counting mechanism which is controlled through a coincidence detecting circuit operating to compare a number of sheets counted with a predetermined number of sheets. The coincidence detecting circuit is provided with a mode changing switch and an inverter connected thereto in the output path to relatively reverse a logical level of an output of the coincidence detecting circuit stop mode. The logical level thus relatively reversed is utilized for controlling the operation of the mechanism through switching elements and relay elements.
    Type: Grant
    Filed: February 7, 1975
    Date of Patent: September 28, 1976
    Assignee: Glory Kogyo Kabushiki Kaisha
    Inventors: Takashi Kondo, Motoaki Fukunaga, Hisashi Kitakami
  • Patent number: 3982105
    Abstract: Tachygraph recording discs carrying traces disposed in concentric strip-like tracks are analyzed in a device comprising a radial row of sensor cells under which the disc is rotated to provide point-by-point scanning of radial lines at a preselectable frequency given by clock pulses, the speed of rotation of the disc being controlled so that the scanning of each line corresponds to a given unit e.g. 1 minute of the disc time scale. Traces having different radial widths and locations, and which may possibly overlap, are detected as digital pulses which can be discriminated by a logic circuit and separately added and supplied to a recording and/or display device.
    Type: Grant
    Filed: November 11, 1974
    Date of Patent: September 21, 1976
    Assignee: TVI-Television Industrielle S.A.
    Inventor: Karl Heinz Eberle
  • Patent number: 3980867
    Abstract: A monitoring system is provided for use in conjunction with a wire loop which is embedded in a roadway, and which senses the presence of vehicles in the roadway to control a traffic signal. The monitoring system senses the output of the loop oscillator which is included in the traffic control circuitry and which generates a loop signal and whose frequency-determining circuit includes the wire loop to indicate immediately any failure in the loop circuit. If for any reason the loop oscillator fails to operate, that fact will be sensed immediately by the monitoring system of the invention, and such a failure will be equated to a failure in the embedded loop, or in the lead-in circuit which connects the loop to the loop oscillator.
    Type: Grant
    Filed: December 19, 1974
    Date of Patent: September 14, 1976
    Assignee: Indicator Controls Corporation
    Inventor: Thomas R. Potter
  • Patent number: 3980868
    Abstract: A digital time indication system for displaying the time to the next racing signal of a yacht race. A quartz crystal oscillator provides time reference signals to a frequency divider chain. The divider chain counts down and provides digital signals representing the number of minutes, tens of seconds and seconds to the next starting signal. The divider chain automatically recycles so as to countdown for the next period of preselected length. Switching means are provided to select the desired period from one of several standard yacht racing signal time intervals. Counter preset means are provided to synchronize the counter to a racing signal. Counter decoding is provided to gate an audio frequency signal to an audio amplifier and electromagnetic sound transducer so as to provide an audible beep at a pre-determined rate during the last several seconds preceding the next racing signal. The digital signals from the divider chain are conditioned by signal drivers to control a digital numerical display.
    Type: Grant
    Filed: April 4, 1975
    Date of Patent: September 14, 1976
    Inventor: Francis T. Thompson
  • Patent number: 3978321
    Abstract: A portable hand-carried battery-operated electronic automobile counting device designed for counting automobiles entering a paid parking area as a check on attendant's collection of parking fees. The devices will normally be stored when not in use in the manager's office and will be given to individual attendants for placement at appropriate parking entrance driveways prior to the start of the event which will attract persons arriving by automobile to the parking area. The device is equipped with a counter and a locking energizing switch. On delivery of the device to the attendant, the supervisor will reset the counter and lock the energizing switch in "on" position. The device is equipped with a second series connected position responsive switch which maintains the device in deactivated position while being manually carried to its position of use, and which automatically completes the energizing circuit when placed in its position of use.
    Type: Grant
    Filed: August 22, 1974
    Date of Patent: August 31, 1976
    Inventor: Robert E. Doggett
  • Patent number: 3976859
    Abstract: A multiple-stage binary-coded decimal counter comprises a number of stages each having four preset data input points capable of being energized in parallel binary fashion. A presetting counter is provided, arranged to supply to the preset data input points binary signals representing a decimal digit. The presetting counter is itself actuated by an abrupt signal, and means are provided for selecting the counter stages one at a time for setting from the presetting counter. This last-mentioned means is inhibited except during the presetting procedure.
    Type: Grant
    Filed: February 26, 1975
    Date of Patent: August 24, 1976
    Assignee: Ferranti Limited
    Inventors: Stuart Melville Christie, Alexander Turnbull Shepherd
  • Patent number: 3976981
    Abstract: A control system for controlling a number of different variables in accordance with input information has a plurality of separate control channels each including a digital store, preferably a shift register, for storing input and output data and also control parameters appropriate to that channel. The channels are connected sequentially to a common data processing unit which makes use of a common algorithm store. Selection of algorithms for the various channels is effected by a pin board matrix thereby providing a visual display of the selected algorithms. An operator's console has facilities for selecting any channel and displaying information from the channel store on monitors. A key-board enables the operator to change control parameters of the selected channel. Each channel also includes means for analogue-to-digital conversion of input information, digital to analogue conversion of output information and holding means for output analogue data.
    Type: Grant
    Filed: May 14, 1973
    Date of Patent: August 24, 1976
    Assignee: Rosemount Engineering Company Limited
    Inventor: Keith Romilly Roskrudge Bowden
  • Patent number: 3971920
    Abstract: A digital storage system provides an economical means by which binary data words describing a series of events occurring randomly in time can be stored during a recording period and later retrieved in their sequence of occurrence with the time-of-event information preserved. A first recirculating shift register memory having arbitrarily great length, such as 4096 cells, each cell capable of storing a parallel binary data word such as 6 (or N bits), a second recirculating shift register memory of equal length, similarly capable of storing parallel binary error codes, and a cell counter having a counting capacity equal to the numerical length of said shift register memories are clocked in synchronism and comprise the storage medium.
    Type: Grant
    Filed: May 5, 1975
    Date of Patent: July 27, 1976
    Assignee: The Bendix Corporation
    Inventor: Robert P. Johnson