Abstract: A low inductance power connector for reducing inductance in an electrical conductor is provided. An interface connector connects circuit boards together while reducing inductance and increasing current carrying capacitance. The connector for connecting circuit boards comprises a first contact having a first mating portion and a second mating portion, and a second contact having a first mating portion and a second mating portion, wherein the first and second contacts are interleaved.

Abstract: A low inductance power connector for reducing inductance in an electrical conductor is provided. An interface connector connects circuit boards together while reducing inductance and increasing current carrying capacitance. The connector for connecting circuit boards comprises a first contact having a first mating portion and a second mating portion, and a second contact having a first mating portion and a second mating portion, wherein the first and second contacts are interleaved.

Abstract: An electrical connector having an insulating housing, a plurality of first contacts (139), a plurality of second contacts (141,143), wherein the connector exhibits a desired characteristic impedance. The second contacts are angled relative to the first contacts and each has an edge (151) disposed adjacent to an edge or side of first contacts. An electrical connector as described above where the first contacts are signal contacts, the second contacts are power or ground contacts, and the desired impedance is approximately less than 50 ohms.

Abstract: A low inductance power connector for reducing inductance in an electrical conductor is provided. An interface connector connects circuit boards together while reducing inductance and increasing current carrying capacitance. The connector for connecting circuit boards comprises a first contact having a first mating portion and a second mating portion, and a second contact having a first mating portion and a second mating portion, wherein the first and second contacts are interleaved.

Abstract: A satellite simulator to aid in the development and test of a spacecraft command and telemetry application for ground stations permits a satellite simulator to be implemented effectively and with less cost than has traditionally been possible with customized systems. From the spacecraft command and telemetry processing system, the present invention appears as a satellite that can provide a configurable telemetry stream and can accept configurable commands. The invention provides core satellite simulation capabilities required for ground station spacecraft command and telemetry processing systems such as OS/COMET or for large-scale simulation networks such as multi-service simulation systems. The present invention offers an inexpensive risk mitigation that relieves application developers of total dependency on the satellite simulation development schedule. Moreover, the present invention can be used to demonstrate the features of ground station application systems.

Abstract: An electrical connector, comprising: a housing; a plurality of signal contacts extending from said housing; and a plurality of ground contacts. Each ground contact has: an L-shaped section located within the housing that shields at least one signal contact from the other signal contacts; and a mating section extending from said housing. The header could have a differential pair arrangement of pairs of columns of signal contacts extending from the housing; and columns of ground contacts flanking the pairs of columns of signal contacts. Two columns of ground contacts preferably flank each side of two columns of signal contacts.

Abstract: A satellite simulator to aid in the development and test of a spacecraft command and telemetry application for ground stations permits a satellite simulator to be implemented effectively and with less cost than has traditionally been possible with customized systems. From the spacecraft command and telemetry processing system, the present invention appears as a satellite that can provide a configurable telemetry stream and can accept configurable commands. The invention provides core satellite simulation capabilities required for ground station spacecraft command and telemetry processing systems such as OS/COMET or for large-scale simulation networks such as multi-service simulation systems. The present invention offers an inexpensive risk mitigation that relieves application developers of total dependency on the satellite simulation development schedule. Moreover, the present invention can be used to demonstrate the features of ground station application systems.

Abstract: An interconnection system having a first connector with a plurality of contacts; and a second connector with a plurality of contacts. The contacts of the first connector engage the contacts on the second connector, creating unbalanced resultant forces an the contacts of the second connector. The unbalanced resultant forces caused by a set of the contacts of the second connector generally offset the unbalanced forces caused by another set of contacts on the second connector. Thus, the contacts balance the forces created during mating, providing a generally balanced interconnection system.

Abstract: A satellite simulator to aid in the development and test of a spacecraft command and telemetry application for ground stations permits a satellite simulator to be implemented effectively and with less cost than has traditionally been possible with customized systems. From the spacecraft command and telemetry processing system, the present invention appears as a satellite that can provide a configurable telemetry stream and can accept configurable commands. The invention provides core satellite simulation capabilities required for ground station spacecraft command and telemetry processing systems such as OS/COMET or for large-scale simulation networks such as multi-service simulation systems. The present invention offers an inexpensive risk mitigation that relieves application developers of total dependency on the satellite simulation development schedule. Moreover, the present invention can be used to demonstrate the features of ground station application systems.

Abstract: A transmission cable for transmitting differential logic signals is disclosed having an improved shielding. The cable includes a pair of insulated signal conductors in side by side relation with a layer of electrically conductive material wrapped around the two signal conductors. A non-insulated drain wire is disposed axially along the outside of the wrap of shielding material adjacent one of the signal conductors. The layer of conductive material is continued around the outside of the drain wire thereby forming an additional wrap of the shielding about at least a part of the cable assembly. The drain wire is in electrical engagement with the shielding material.

Abstract: A procedure state descriptor system for generating state reports of the progress of the invocation process for procedures executed on a digital data processing system is disclosed. The procedure state descriptor system includes a procedure descriptor generator process that generates a procedure descriptor for each procedure. Each procedure descriptor contains a number of offset values that are offset addresses from the start of the procedure to locations in the procedure that are the demarcations between states of the invocation process for the procedure. When a particular procedure is invoked for execution, a procedure state analyzation process accesses the procedure descriptor offset values for the procedure, the memory address of the start of the procedure, and the address of the next instruction to be executed in the procedure. The procedure state analyzation process then determines the difference between the address of the instruction to be next executed and the starting address of the procedure.

Abstract: A visual simulation system in combination with a radar simulation system may be used for generating full radar or synthetic aperture radar (SAR) radar images from a common data base that are correlated to video images of the visual system while facilitating radar image processing. The combination of visual and radar simulation systems in accordance with the present invention obviates the need for a separate stand-alone radar processor and dedicated radar data base. Simulated electronic tactical map data may also be provided.

Abstract: A real-time, concurrent garbage collection system and method uses the virtual-memory page protection mechanisms of a standard computer system to collect used storage space in a heap. The heap is divided into old-space and new-space portions, each of which is further divided into a multiplicity of pages. At least one mutator thread modifies and adds objects to new-space. Two garbage collection process threads are used: a fault processing thread, and a concurrent scanning thread, both of which help to collect the accessible objects in old-space. The garbage collector initially copies only the root objects, or a portion of the root objects, to new-space. In addition, all pages of new-space which contain copies of old-space objects are initially marked as being protected. Whenever the mutator tries to access an object in a protected page, a page-access trap is generated.

Abstract: A cable 3 connector 1 comprising, a housing block 2 and an electrical cable 3 having a signal wire 13 connected to a corresponding signal contact 4, and at least one reference wire 14 connected to a reference conductor 5 extending beside the signal contact 4, a housing 6 coupled to the housing 6 block 2 and receiving the signal contact 4 in one of multiple contact positions 7 in the housing 6, and a reference contact 10 received in the housing 6 and connected to the reference conductor 5.

Abstract: Automatically feeding document pages into registration over the conventional platen of a copier wherein the document pages comprise single page individual sheets and plural page connected unseparated segments of elongate computer forms webs, comprising: feeding the first document page automatically to the platen and registering it in an individual sheet document mode regardless of whether the first document page is an individual sheet or the first page of an elongate computer forms web; automatically sensing whether a computer forms web was so fed to the platen by sensing whether the document length exceeds a preset length and that said document has sprocket holes; and then automatically switching from said individual sheet document mode to a computer forms web document mode for the feeding and registering of subsequent document pages of a computer forms web in response to said sensing of a computer forms web, wherein in said computer forms web document mode the subsequent computer forms web page feeding and

Abstract: A communication scheme for a multi station message transmission system involves the transmission of messages from one station to another, a return message from the receiving station and the retransmission of a previously transmitted message if an acknowledgement is not received. Each message, which may or may not contain data, includes a header having a sequence bit and an acknowledge bit. Each station within the communication system stores in memory a transmit sequence bit and a receive sequence bit. The header of each message that is transmitted from a given station contains a sequence bit corresponding to the state of the transmit sequence bit stored at that station. When a message having an acknowledge bit is received, the state of the stored transmit sequence bit is switched.

Abstract: A multiple services system using telephone lines to supply various data services to subscribers, including alarm surveillance, meter reading, energy management and digital data service, provides a multi-conductor subscriber bus at the subscriber premises for selective connection of plural data service terminals to the system and a switching communication controller at the central office which acts as a concentrator for the transmission of alarm, meter reading and control signals between the subscriber data system and a central control system, while acting as a switch for the connection of the subscriber data system to a data service system for transmission to the subscriber of digital video display data on request. The transmission over the telephone lines is transparent to normal telephone service and all communications within the system, including those on the subscriber bus, are effected in accordance with a predetermined link control protocol.

Abstract: Apparatus is disclosed for remotely sensing the mechanical position of one r more objects in an electrical inferference sensitive environment, such as the landing gear of an aircraft of the like in which is utilized a passive, fiber optic transmission system having means for testing the continuity of the system to enhance safety and reliability.