Abstract: In a data acquisition and storage system including a plurality of remote data generating units, a data processor/display unit for addressing the respective data generating units, processing the data for storage and providing a visual display of the process data, and a computer having random access to the stored data of the processor/display unit to selectively update stored information, a display exerciser is connected in parallel with the processor/display unit and provides the capability of both recirculating data from storage and the processor/display unit through the display unit as well as introducing operator initiated data.

Abstract: In an aircraft autopilot there is provided a first circuit selectively actuatable to connect the glide slope adapter to electrical power during the existence of a glide deflection signal, the glide slope adapter being disconnected from electric power when either (a) the altitude hold is inoperative, or (b) the altitude hold is operative and at least one of the following exists: the radio switch LOC NORM is off, or glide slope coupling has been achieved; a second circuit for maintaining the autopilot under control of a preset heading on the pictorial navigation indicator when the radio coupler is preset for radio navigation control including a third circuit for placing the automatic pilot under control of the radio coupler and interrupting heading control by the pictorial navigation indicator upon actual intercept of the omni occurring; and a selectively actuatable fourth circuit for disconnecting the console pitch signal from the amplifier and interconnecting a pitch signal of predetermined fixed magnitude to

Abstract: A speech synthesis system with a linear predictive filter. The linear predictive filter utilizes coded reflection coefficients to produce digital signals representative of human speech. A variable interpolation circuit within the linear predictive filter allows a variable number of interpolation steps to be calculated between successive values of reflection coefficients. Additionally, a user programmable option allows the user to select a linear, nonlinear, or a combination form of interpolation based on stored scale data.

Abstract: An improved automated engine diagnosing device employing a digital data processor and a cathode ray tube monitor for displaying individual engine cylinder numbers in separate association with correlated values of exhaust gas emissions pollutants. Engine timing data associated with the time of firing of individual cylinders of the engine being tested synchronizes select cylinder firing inhibition for orderly accumulating gas emissions data generated from an exhaust probe placed in the tail pipe of the automobile under test. An automatic sequential firing inhibition and a manually selectable firing inhibition permits dual modes of data acquisition for developing pollutant data to be utilized by the processor for generating the analysis display on the cathode ray tube monitor.

Abstract: There is disclosed a vehicle train control apparatus and method for controlling the operation of a vehicle train by a second control equipment provided in a different control vehicle of the train in the event of the failure of the train control equipment of a first control vehicle initially selected to control the train.

Abstract: A system for providing an optimum lift demand signal for aircraft maneuvers such as "go-around" includes a computer for generating a reference angle of attack signal which is functionally related to the aircraft's vertical velocity. The reference signal is compared with a signal corresponding to the aircraft's actual angle of attack, thereby producing an error signal. The error signal is utilized as a control to the aircraft's dynamics for optimizing the aircraft's climb-out performance.

Abstract: Operation of a continuous speech recognition system operable according to the dynamic programming technique, is controlled by a state transition diagram in compliance with which word sequences to be recognized by the system with reference to a predetermined number of reference words B.sup.n 's are pronounced. The system comprises a state transition table accessed by the reference words B.sup.n 's to successively produce particular states y's in the diagram and previous states z's for each particular state y. In cooperation with a recurrence value and an optimum parameter table, a matching unit determines a recurrence value T.sub.y (m) and an optimum parameter set ZUN.sub.y (m) according to: ##EQU1## where u and m represent an end and a start point of a fragmentary pattern A(u, m) of an input pattern A representative of a word sequence and D(u, m, n), a similarity measure between the fragmentary pattern A(u, m) and a reference word B.sup.

Abstract: A method and apparatus are disclosed for correcting energy (Z) signal non-uniformities in the response of an Anger-type scintillation camera to image events occurring at different (X, Y) positions on the camera face. Energy correction factors f(P)' corresponding to deviations of up to .+-.12.8% from a reference pixel area are determined off-line for 4,096 camera face pixel areas from a uniform flood field source Z-map. The correction factors f(P)' are stored in a 64.times.64 array of a correction factor memory, addressable by image event (X, Y) position coordinates. During on-line operation, for each image event the correction factor f(P)' corresponding to the image event (X, Y) position is retrieved, scaled in a multiplying digital to analog converter by the actual energy Z.sub.IN of the event, and added to the event Z.sub.IN signal to provide a corrected energy signal Z.sub.c =Z.sub.IN (1+f(P)') which is proportional to the incoming signal.

Abstract: Speech parameter signals may be coded to consist of fewer bits for data reduction in memory. In this system both coded and uncoded signals are stored with an associated control signal which controls selection of corresponding direct or decoder circuit coupling of memory output to a speech synthesizer.

Abstract: A method and a circuit arrangement for generating setting signals for signal generators of a traffic signal system, particularly of a street traffic signal system, upon employment of indications of time intervals between mutually hostile traffic flows contained in a time interval matrix are discussed. The time intervals are read from the time interval matrix for each entry signal group and subtracted from the greatest time interval value which greatest time interval value is reduced in value in cyclical succession. When this value is reduced to zero or, respectively, when a zero difference is determined in the course of the difference formations, then appropriate setting signals for the signal generators of the traffic signal system are emitted.

Abstract: Left and right main gear wheel speed signals are processed by a circuit which is a model of aircraft rigid body motion to provide a synthesized nose wheel velocity representative signal.

Abstract: An intersection control system is described which coordinates a plurality of intersections each of which is responsive to local requests for service. Traffic control coordination is accomplished between a plurality of intersections by providing for each intersection an Intersection Control Unit capable of response to local demand and a variety of permitted phase conditions, and by providing a processing unit for each group of intersections (a Network Processing Unit) which determines the permitted phase conditions at the intersections within constraints of system-wide parameters, including a system-synchronizing background cycle. Each Network Processing Unit is provided with sets of special function timers, binary sensors and binary command switches which permit timing of the phases applicable to each intersection and which gate the splits in coordination with the background cycle.

Abstract: Actual slip is determined from deviation of measured speeds of traction drive elements and known "no-slip" ratio for the drive ratio settings of a traction drive transmission. An error signal is generated whenever the relationship between the foregoing actual slip and traction pressure is outside defined limits to correct traction pressure as a function of the error signal.

Abstract: A transmitter-receiver synchronizer is described for use in terminating T1 lines from a subscriber line switch at a central time division multiplexed switching system. A shared rate converter provides bidirectional data rate conversion between the 1.544 Mb/s T1 line and the 2.048 Mb/s switching system. Two buffer memories are used, each writing in at one rate, and reading out at another rate.

Abstract: In a microcomputer system resource and priority testing of modules is provided by first testing for readiness to exchange information via all modules, then testing for the priority assigned to the modules in which flags and registers are operated in a defined sequence to switch bus connections to the various test and data lines.

Abstract: A speech synthesis circuit implementable in an integrated circuit device, capable of converting frames of data into analog signals representative of human speech. The frames of data are comprised of digital representations of values of pitch, energy and certain filter coefficients, which are stored in non-volatile memory. The filter coefficients are utilized to control a linear predictive filter which is excited by voiced and unvoiced excitations stored in non-volatile memory. A control circuit coupling the excitation signals to the linear predictive filter allows the operator to select an external excitation signal rather than precalculated stored excitation signals. Thus, the synthesizer may be utilized in a vocoder application, wherein a residual excitation signal transmitted from an analysis circuit may be utilized as the excitation signal.

Abstract: A raster type display apparatus includes interlaced even-and-odd frames. A digital memory of a computer stores line segment data in locations which are sequentially read out to form a line segment display with overlapping line segments. An off-scale detector prevents a line segment directly between the data points and creates a pair of line segments at the top and bottom of the display screen. An extended line from a break point in a curve to screen bottom is also prevented. Resettable registers monitor the carrier bits of digital multiplier and adder and are connected by an even-odd detector to actuate an exclusive "OR" gate to complement the output and generate the appropriate split display.

Abstract: This delta modulation system uses the differences between three successive samples of a waveform (the i-1, i, and i+1) such that the number of bits per digitization is reduced from four to two. The value vi of the ith sample is calculated by the equation v.sub.i =v.sub.i -1+f(.DELTA..sub.i-1, .DELTA..sub.i), and f is a special function defined by 16 values stored in a read-only memory.

Abstract: A method and system for reducing the actual bandwidth required for the transmission of signals which are inherently time and frequency division multiplexed, e.g.

Abstract: An improved distributed input/output system is disclosed for controlling numerous high speed peripheral devices (both low speed, medium speed, and high speed) and the transfer of data signals, status signals, and control signals between those devices and a general purpose digital computer. The control system described includes a direct-memory-access multiplexer which can accommodate a plurality of low or medium-speed input/output services and also high-speed input/output devices under the control of separate programmable microcoded peripheral-unit controllers. The direct-memory-access multiplexer of this invention is fully compatible with controllers that can also be used with an indirect-memory access multiplexer. Each controller, being an element of a distributed system, is adapted to be located at an individual peripheral device and each is connected to the multiplexer by an identical ribbon cable.