摘要:
A munitions cartridge transmitter capable of emitting an electromagnetic signal after discharge from a cartridge propelling device comprises a signal generator, an electromagnetic signal transmitter coupled to the generator, an antenna coupled to the transmitter, and a hollow cartridge for housing the generator, the transmitter, and the antenna. The transmitter is energized after discharge of the cartridge propelling device by a power source contained in the cartridge.
摘要:
A mode of communication for asset tracking units involves communication between a central station and the individual tracking units, usually through a satellite link. This mode is the primary communication link for tracking the assets. A second mode is the local area network (LAN) or "mutter" mode, in which a subset of tracking units communicate with each other in a mobile LAN. This mode is used as the secondary communication mechanism to conserve power, since mutter mode communication requires much less energy for local communication between the tracking units as opposed to direct satellite communication with the central station. In addition, mutter mode leads to increased reliability of the asset tracking system by enabling tracking of units which have batteries too weak to support communication with the central station, but strong enough to support communication in mutter mode. The mutter mode is also useful in finding tracking units which are not communicating with the central station due primary communication equipment fault or other inhibiting condition.
摘要:
A packaged electronics system, having respective portions each with respective input and output ports, and having interconnection busses between certain of these ports, is tested as follows. Each input port has a set of first transmission gates associated therewith for selectively disconnecting it during testing from the end of each interconnection bus connected bit during normal operation. Each input port has a second set of transmission gates associated therewith for selectively applying test vectors thereto during testing as provided in parallel form from a serially loaded shift register. Each output port connects to the input connections of a respective set of tristate drivers for selectively applying its output signals at relatively low source impedance to at least one interconnection bus connected from the output connections of that set of tristate drivers. A shift register converts the signals appearing in parallel at least one end of each interconnection bus to a concatenation of test results in serial form.
摘要:
The surface of a polymer dielectric layer is scanned repeatedly with a high energy continuous wave laser in a pattern to create via holes of desired size, shape and depth. This is followed by a short plasma etch. The via holes are produced at commercial production rates under direct computer control without use of masks and without damage to conductor material underlying the dielectric layer. A two-step technique usable to form a large hole to a partial depth in the dielectric layer and several smaller diameter holes within the large hole through the remainder of the dielectric layer depth allows formation of a large number of holes in a given area of a thick dielectric layer.
摘要:
A method and apparatus are provided for disposing a polymer film on an irregularly-shaped substrate at relatively high temperatures. In particular, the method and apparatus of the present invention provide a system for the packaging of very large scale integrated circuit chips. The system of the present invention particularly solves problems associated with high temperature processing and problems associated with the highly irregular surfaces that result. Nonetheless, the resultant product is capable of being fashioned into circuit chip systems which are independently testable and which may be reconfigured after testing by removal of the polymer film itself.
摘要:
A method and apparatus are provided for disposing a polymer film on an irregularly-shaped substrate at relatively high temperatures. In particular, the method and apparatus of the present invention provide a system for the packaging of very large scale intergrated circuit chips. The system of the present invention particularly solves problems associated with high temperature processing and problems associated with the highly irregular surfaces that result. Nonetheless, the resultant product is capable of being fashioned into circuit chip systems which are independently testable and which may be reconfigured after testing by removal of the polymer film itself.
摘要:
An adaptive method and system are disclosed for providing high density interconnections of very large scale integrated circuits on a substrate. The procedure is performed in four basic steps: first an artwork representation for the interconnections of the integrated circuits is generated. This artwork representation is stored in a computer data base and assumes the integrated circuits to be at predetermined ideal locations and positions on the substrate. Second, using imaging, the actual positions of each integrated circuit on the substrate are determined. The actual positions of the integrated circuits are compared with their ideal positions to compute an offset and rotation for each integrated circuit on the substrate. Third, the computed offsets and rotations are then used to modify the artwork representation stored in the data base to account for the actual locations and positions of the integrated circuits on the substrate. Finally, the modified artwork representation is used to drive a direct writing laser lithography system that actually forms the high density interconnections of the integrated circuits on the substrate. The artwork representations are stored in computer data bases in vector form to minimize storage requirements. The laser beam produced by the lithography system is raster scanned on the substrate. Modulation of the laser beam is controlled by the real time conversion of the vector representation of the modified artwork to be a bit mapped representation. To assure accurate formations of the interconnects, a feedback alignment system is used to accurately position the laser beam throughout its raster scan.
摘要:
A frame synchronizer having broad applicability in television systems is particularly adapted for use in a chrominance time-compressed, luminance bandwidth reduced television system. The frame synchronizer, which separates the composite video signal into its component parts and thereby minimizes the dynamic range required to digitize the signal, demodulates the chrominance signal into its quadrature components and separates the luminance signal. The synchronization signal in the composite video signal generates slave distribution signals and slave horizontal and vertical addresses. The separated chrominance quadrature components and the luminance signal are digitized and, along with the slave distribution signals and the slave horizontal and vertical addresses, are temporarily stored in first-in, first-out memories which provide independent buffering and thereby accommodate a high degree of mismatch between master and slave timing. The chrominance and luminance data are accumulated in distribution registers and transferred to write registers which provide the data input to a frame buffer memory. Master distribution and master horizontal and vertical addresses are generated from a master synchronization signal along with write and read control signals. The data in the write register is read into the frame buffer memory at the slave horizontal and vertical addresses in response to the write control signal, and data in the frame buffer memory is read out from the master horizontal and vertical addresses in response to the read control signal, converted to analog signals, and combined to form a composite signal.
摘要:
The utilization of a removable overlay layer together with its associated metallization pattern, is used to effectively provide wafer scale integration for integrated circuit chips. The method and configuration of the present invention provide for the fabrication and testing of systems which are otherwise untestable. The present invention also permits integrated circuit systems to be tested in their final configuration in terms of speed and operating environment and the invention eliminates many of the problems associated with wafer or chip probes. The present invention also utilizes special test chips which are either temporarily or permanently affixed in an integrated circuit chip package.
摘要:
The utilization of a removable overlay layer together with its associated metalization pattern, is used to effectively provide wafer scale integration for integrated circuit chips. The method and configuration of the present invention provide for the fabrication and testing of systems which are otherwise untestable. The present invention also permits integrated circuit systems to be tested in their final configuration in terms of speed and operating environment and the invention eliminates many of the problems associated with wafer or chip probes. The present invention also utilizes special test chips which are either temporarily or permanently affixed in an integrated circuit chip package.