Abstract: An insert device employing electronics is non-intrusively disposed between an electronic mechanism's pins and female connector in order to provide the mechanism with electronic functional capabilities. The insert device is of a shape, size, and character such that normal mating engagement between the mechanism's pins and connector is unaffected.

Abstract: A diagnostic method and apparatus according to the invention locates faulty components in complex real systems in which a high level function can be allocated into lower functional levels with each lower functional level including a plurality of functions. Functional level allocation is repeated until functions correspond to line replaceable units, shop replaceable units, or individual circuit components. A virtual model according to the invention can be defined with parallel functional levels and functions using virtual components so that point-to-point comparison of signals generated by the real system functions on each functional level can be made with signals generated by corresponding virtual components to isolate faulty line replaceable units, shop replaceable units, or individual circuit components. Inputs to the virtual components are the same as the real system inputs provided to the real system functions.

Abstract: A pulse code modulation (PCM) data enhancer which corrects bit errors using correlations between two particular PCM words received by a receiving unit separated by a predetermined time interval and a method therefor. A primary and a number of secondary pulse codes are stored in a first-in-first-out (FIFO) memory. The primary pulse code is modified, and the modified and secondary pulse codes provide addresses to a memory storing the probability of a transition between the modified pulse code and each of the secondary pulse codes. The probabilities are then accumulated, and the modified pulse code resulting in the greatest accumulated probability is output as an error-corrected data word.

Abstract: An insert device employing electronics is non-intrusively disposed between an electronic mechanism's pins and female connector in order to provide the mechanism with electronic functional capabilities. The insert device is of a shape, size, and character such that normal mating engagement between the mechanism's pins and connector is unaffected.

Abstract: A method and apparatus for processing the log video output of a receiver that can measure multiple time overlapped pulses on a nearly instantaneous basis. The receiver measures frequency, pulse modulation, time of arrival, amplitude, pulse width and phase difference when simultaneous pulses are present. To detect pulse parameters a given voltage threshold must be exceeded and M out of the last N data samples must fall within a given voltage window that is above the threshold voltage. Pulse detection is initiated by establishing a dynamic noise threshold that is above the random noise level. When a pulse arrives, the value of the amplitude samples are measured and when the successive differences between the amplitude samples are small enough then a pulse presence is declared. Following detection of a pulse, amplitude samples are continuously taken and processed to detect the end of the pulse or a pulse-on-pulse condition.

Abstract: A sensor device in the form of a thin, generally flat substrate which fits between an electrical plug and an electrical outlet while permitting normal mated engagement therebetween. The substrate preferably includes at least one microelectronic device for detecting and storing electrical characteristics of signals flowing from the outlet to the plug.

Abstract: A signal conditioning insert device that is particularly suited for use as a small computer system interface (SCSI) terminator. The device is in the form of an elongated U-shaped member that is capable of being sandwiched between two electrical connectors. The substrate has a series of contact strips thereon which engage the contact fingers of the connectors. Conductive traces on the substrate connect the contact strips to components forming a desired signal condition function such as a SCSI terminator circuit.

Abstract: Disclosed is an apparatus and method for separately tracking, identifying and providing DF on LPI RF transmitters. Intercepter circuitry which includes an antenna and a single channel receiver is utilized to receive and down convert LPI RF signals to LPI IF signals. Digitizer circuitry is utilized for down converting the LPI IF signals to LPI baseband signals as well as utilized for converting the LPI baseband signals to digital data. A spectrum analyzer generates power spectrums utilizing the digital data and passes the power spectrums to a signal detector. The signal detector detects signal clusters in the power spectrums and associates the signal clusters from the same LPI RF signals to create pulse descriptor words for the LPI RF signals.

Abstract: A highly versatile data search engine in which multiple search cells are connected together in a pipeline through which data can be streamed. Each cell has multiple registers, and corresponding registers in each cell are connected together to form the pipeline. Characters in two data streams are compared in the pipeline, a first data stream that includes a sequence of database characters and parallel sequences of associated data, and a second data stream that includes a sequence of pattern characters and parallel sequences of associated data. The parallel data sequences associated with the pattern data include coded signals that control cell operation. One of the parallel data sequences associated with the database is a sequence of character marks, which are used to indicate search starting points in the database character sequence, and which are propagated along the database character sequence as a result of successive character matches between the pattern and database characters.

Abstract: A solderless right-angle interconnect is provided for achieving flexible, low-profile and enhanced performance high frequency signal interconnections. The interconnect includes a conductive pin which has a first end electrically coupled to a first transmission path and a second end electrically coupled to a stripline circuit trace which provides a second transmission path. A springy compressible conductive button is located in a recessed chamber at the second end of the conductive pin and partially extends from the end thereof. The second end of the conductive pin further includes at least one tapered edge. A conductive ground layer is further provided for substantially enclosing the interconnect and providing a ground reference thereabout. In a first embodiment, the conductor forming the first transmission path includes a coaxial cable coupled to the conductive pin.

Abstract: A method and apparatus facilitating the exchange of data between application programs written in a higher level language and running on separate heterogeneous computer platforms, without concern for possible differences in internal data formats in the separate platforms. Each message format to be the subject of exchange among heterogeneous computer platforms is preregistered with each such platform by writing and executing a computer program that contains a definition of the message format in the higher level language. Preregistration produces a message description file in each platform, which is used at initialization time to generate a field descriptor tree in each platform. When a message is to be transmitted, it is first translated to a universal meta format, making use of the field descriptor tree, and on receipt at another platform is translated back to the native format of the receiving platform.

Abstract: A wafer-like insert has a plurality of holes therein which correspond to pins of an electrical connector. The wafer includes contacts for making electrical connection to the pins, connector shell or electrical components. In such manner, the wafer can be used for a wide variety of purposes such as conditioning signals carried by the pins and grounding selected pin(s) to each other and/or the connector shell. The wafer can be installed in any common electrical connector pair without prior modification or preparation of the connectors and without impairing the normal fit or function of the mated connector pair.

Abstract: A circuit board construction including a circuit board with circuit modules installed on at least one face of the board, and at least one baffle plate connected rigidly to the board. The baffle plate is of approximately the same dimensions as the circuit board and is rigidly connected to it in a parallel, spaced-apart relationship. The baffle plate has openings at selected locations to direct air onto board-mounted circuit modules, and forms one face of an inlet air plenum, the other face of which is one surface of the circuit board to which the baffle plate is attached, or one face of an adjacent surface. The construction thereby provides impingement cooling of its components, and greatly improved structural rigidity of the circuit boards. One of the forms of the device illustrated has a single baffle plate associated with each circuit board, with circuit modules located on either the inner surface or the outer surface of the board.

Abstract: A semiconductor wafer has a plurality of holes therein which correspond to pins of an electrical connector. The wafer includes circuitry thereon and contacts for making electrical connection to the pins. In such manner, the circuitry on the wafer can be used for a wide variety of purposes such as testing or modifying signals carried by the pins. The wafer can be installed in any common electrical connector pair without prior modification or preparation of the connectors and without impairing the normal fit or function of the mated connector pair.

Abstract: A comparison circuit having at least one processing cell in which objects defined by multiple parameters are streamed from a data base through the circuit, and compared with a similarly structured object previously stored in the cell. The object stored in the cell and objects streamed through the cell are all defined by data values indicative of maximum and minimum values of the parameters making up the objects. A match is declared when all parameters of the object stored in the cell overlap the parameter ranges of the objects streamed through the cell. With the use of multiple cells connected in series or in parallel, or in a combination of series and parallel, the processing speed of the comparison circuit is increased linearly with the number of such cells. Therefore, searching of large data bases can be performed at very high speeds and configurations of interconnected processing cells can be easily interconnected and loaded to define a number of objects of interest.

Abstract: A circuit for generating memory addresses for use in a computer system. The circuit includes multiple address register files that are usable to store parameters of multiple addressing sequences. Each address register file includes a base register for storing a base memory address, an accumulator register for storing a current address in the sequence, a displacement register for storing an address displacement to be used in conjunction with the accumulator register to produce the address sequence, an extension register used as an alternative displacement register, a count accumulator register to monitor a count of the address items in the sequence, and a count restore register used to store an original count for use at the end of the sequence.

Abstract: A microstrip type transmission line connects RF signals between separate spaced microwave components and defines a RF connecting strip having a flexible insulator base and a ski slope shaped geometry.

Abstract: An electronic system having multiple identical subsystems, some of which can be excluded from the system when defective or held as spares. A mapping circuit associated with each subsystem has a first register for storing a physical address of the subsystem and a second register for storing a logical address. To configure the system to include a selection of subsystems, pairs of physical and corresponding logical addresses are transmitted to the subsystem mapping circuits. When a transmitted physical address matches the address stored in the first register, the second register is enabled to receive a transmitted logical address. The mapping of physical to logical address is therefore distributed among all of the subsystems rather than being handled in a central mapping unit. Subsystems that are to remain out of service have a null address stored in their second registers.

Abstract: A magnetostatic wave (MSW) device for performing spectral analysis of an input signal containing signal components of very high frequency, well in excess of 1 GHz (gigahertz). An input transducer array couples the input signal to a magnetostatic propagating medium, such as a film of yttrium-iron-garnet (YIG), in such a manner that the array effectively provides multiple wave sources spaced along a predetermined arc on the propagating medium, and the waves combine constructively at frequency-dependent points in a focal region of the medium, spaced apart from the input array. Output transducers located at these frequency-dependent points generate output signals indicative of various selected frequency components of the input signal.

Abstract: The releasable electrical connector includes two separable components. Pivotal pawls must pass between lands or keys in order to couple the two components together, thereby providing an indexing feature that prevents a mismating of components. Cam followers in helical grooves effect the coupling and are prevented from reverse movement in their respective grooves by the fingers of a detent fork that are urged into an obstructive relationship with the cam followers. Release of the coupled components is effective via a lanyard that pulls the coupling ring sleeve longitudinally to such an extent that the pawls pivot outwardly into an unlatching position.