Abstract: A method of and an apparatus for designing a test environment and of evaluating performance of the test environment and an electronic device during testing of the electronic device. A virtual test environment is created emulating an actual test environment. A virtual device emulating the actual electronic device is implanted into the virtual test environment, and that virtual device is stimulated with an input test signal emulating the actual input signal applied to the actual electronic device in the actual test environment. The integrity of the input test signal and the resulting output signal is evaluated. An adjustment might be made to the virtual calibration of the virtual test environment and/or to the virtual device, or both, and the design of the actual device might be improved. The invention can be implemented on a properly programmed general purpose processing system or on a special purpose system.

Abstract: A fluid inlet grille (12) with aerodynamic grille bars (13) formed by leading grille bars (46) and trailing grille bars (47) separated by gaps (44). Each of the novel aerodynamic grille bars of the fluid inlet grille is constructed in such a manner that along a majority of its length its transverse cross section has a maximum width greater than its trailing edge width.

Abstract: Testing of a mixed signal electronic device, and evaluating of a test environment. A test driver applies an input test signal to the device. The response of the device is monitored on a differential monitoring device to obtain analog data and on a tester receiver to obtain digital data. The analog data and the digital data are processed, the processed data are compared and evaluated, and the device is evaluted. A virtual test environment is created emulating an actual test environment, and a virtual device emulating the actual device is created and is stimulated with an input test signal emulating an actual input signal. The response of the virtual device is monitored to obtain analog data and digital data. The analog data and the digital data are processed, the processed analog and digital data are compared and evaluated, and the virtual device is evaluated.

Abstract: A method of and an apparatus for determining the correctness of the calibration of an automatic test arrangement and correcting errors in the automatic test arrangement. The electrical length is determined from the tester driver of the automatic test arrangement to the socket pin of the tester interface unit, from the tester driver to a grounding point of the device under test, from the tester driver to the tester interface unit, and with the tester interface unit output pin connected to ground by a shorting block from the tester driver through the shorting block ground. The difference between the first electrical length and the second electrical length is compared with the difference between the first electrical length and the third electrical length, and the result is evaluated to determine the correctness of the calibration of the automatic test arrangement.

Abstract: The invention is a splash and spray suppressor for a wheeled motor vehicle, especially for trucks. The splash and spray suppressor includes a wheel panel nested within the fender. Apertures in the wheel panel allow water droplets to flow into the gap between the wheel panel and the fender. Droplets then flow within the gap toward an opening from where the droplets are drained from the splash and spray suppressor.

Abstract: A vehicle cooling system for a mobile vehicle consists of three essential parts. These are a compressed air reservoir, a heat exchanger and a duct connecting the reservoir and the heat exchanger. On demand, the compressed air will be released to the duct and will expand (as the end connected to the reservoir is expected to be lower in cross-sectional area compared to the end connected to the face of the heat exchanger). This expansion will lead to the reduction in air temperature. This helps in increasing the heat rejection capacity of the cooling system. The colder air passes through the heat exchanger and carries away the heat. This air exits from the other end of the heat exchanger into the environment. A fan is optional to operate behind the heat exchanger to help draw the air though it. The compressed air may originate in the vehicle air system for operating air brakes found on medium and heavy-duty trucks or the compressed air may originate from a separate air compressor.

Abstract: Embodiments of the invention provide a flexible probe head that improves contact force and uniform mechanical contact pressure between the probe feature and an engaged bond pad. Flexible probe head is formed from a plurality of conductive wires embedded in a high frequency elastomer material. During wafer sort, the flexible probe head is in contact communication with die under test. The flexible probe head assumes the natural co-planarity of the surface of the die under test and sort interface unit.

Abstract: Heating, ventilation and air conditioning systems for busses achieve improved air distribution by the use of ducts to distribute the air throughout the passenger compartment. The ducts have a varying cross sectional area so that the impedance to air flow appears constant at all points along the duct. The quantity of air distributed from each of a plurality of vents is substantially even is effectively equalized.

Abstract: The invention is a splash and spray suppressor for a wheeled motor vehicle, especially for trucks. The splash and spray suppressor includes a wheel panel nested within the fender. Apertures in the wheel panel allow water droplets to flow into the gap between the wheel panel and the fender. Droplets then flow within the gap toward an opening from where the droplets are drained from the splash and spray suppressor.

Abstract: Embodiments of the invention provide a direct landing technology for improved wafer testing of semiconductor dies that is scalable to next generation packaging. In particular, the package drawing or custom drawing of a semiconductor die under test is infused on the printed circuit board of the sort interface unit. After decoupling capacitors are mounted and a semiconductor die footprint fabricated on printed circuit board sort interface unit, probe head may be directly sandwiched between semiconductor die under test and printed circuit board sort interface unit. Since the package information is infused on the printed circuit board sort interface unit, the need for a multi layer ceramic space transformer, sockets and so forth are eliminated and high speed testing facilitated. The manufacturing process becomes extremely simplified, low cost, and more reliable due to significantly reduced variable dependencies.

Abstract: Tester derating factor (TDF) arrangements and methodologies providing improvements in semiconductor start-to-finish manufacturing arrangements, especially within DV testing and in the world of designing of devices and virtual simulation.

Abstract: A tractor-trailer system uses aerodynamic principles to use crosswind to its advantage. The system has a curvilinear duct by having a attaching a convex body on the trailer front and a concave body on the back of the cab. When a cross wind enters the gap, it creates a negative pressure (compare to ambient) on the convex surface (trailer front) and a positive pressure on concave surface (back of the cab). Both of these pressures will help reduce the drag. Further having the crosswind flow smoothly can lead to less turbulence intensity in the gap, which can help in improving handling qualities of the system. There is a similar situation both for drag as well as handling qualities can be given for the air traveling in vertical direction (even at zero cross wind).

Abstract: A novel fluid inlet grille with novel aerodynamic grille bars is disclosed. Each of the novel-aerodynamic grille bars of the fluid inlet grille is constructed in such a manner that along a majority of its length its transverse cross-section has a maximum width that is greater than its trailing edge width.

Abstract: A novel fluid inlet grille with novel aerodynamic grille bars is disclosed. Each of the novel-aerodynamic grille bars of the fluid inlet grille is constructed in such a manner that along a majority of its length its cross-section perpendicular to its longitudinal axis has a chord length that is greater than twice its maximum width, a maximum width that is greater than its trailing edge width, and is disposed such that its chord line is disposed at an angle of less than ten degrees to a prevailing direction of inflowing air.

Abstract: A tractor-trailer system uses aerodynamic principles to use crosswind to its advantage. The system has a curvilinear duct by having a attaching a convex body on the trailer front and a concave body on the back of the cab. When a cross wind enters the gap, it creates a negative pressure (compare to ambient) on the convex surface (trailer front) and a positive pressure on concave surface (back of the cab). Both of these pressures will help reduce the drag. Further having the crosswind flow smoothly can lead to less turbulence intensity in the gap, which can help in improving handling qualities of the system. There is a similar situation both for drag as well as handling qualities can be given for the air traveling in vertical direction (even at zero cross wind).

Abstract: Testing of a mixed signal electronic device, and evaluating of a test environment. A test driver applies an input test signal to the device. The response of the device is monitored on a differential monitoring device to obtain analog data and on a tester receiver to obtain digital data. The analog data and the digital data are processed, the processed data are compared and evaluated, and the device is evaluted. A virtual test environment is created emulating an actual test environment, and a virtual device emulating the actual device is created and is stimulated with an input test signal emulating an actual input signal. The response of the virtual device is monitored to obtain analog data and digital data. The analog data and the digital data are processed, the processed analog and digital data are compared and evaluated, and the virtual device is evaluated.

Abstract: A vehicle cooling system for a mobile vehicle consists of three essential parts. These are a compressed air reservoir, a heat exchanger and a duct connecting the reservoir and the heat exchanger. On demand, the compressed air will be released to the duct and will expand (as the end connected to the reservoir is expected to be lower in cross-sectional area compared to the end connected to the face of the heat exchanger). This expansion will lead to the reduction in air temperature. This helps in increasing the heat rejection capacity of the cooling system. The colder air passes through the heat exchanger and carries away the heat. This air exits from the other end of the heat exchanger into the environment. A fan is optional to operate behind the heat exchanger to help draw the air though it. The compressed air may originate in the vehicle air system for operating air brakes found on medium and heavy-duty trucks or the compressed air may originate from a separate air compressor.