Abstract: A system and method is provided for enabling respondents at their computer systems to connect via a browser with a server computer over a network, such as the Internet, and receive an initial set of survey questions on one or more pages during which primary images are downloaded into the browser's cache but are not presented to each respondent as they are each displayed into a small (e.g. 1 by 1) pixel area on display of the respondent's computer system and thus are not detectable by respondents. After receiving answers to such questions for each of the respondents, the server computer directs the browser of each respondent computer with at least one survey question in which the primary image is displayed from the browser's cache for a brief interval of time to the respondent, and the respondent answers the question with respect to the primary image. Different survey questions may be presented to the respondent having different timed displayed primary images.

Abstract: A system and method is provided for enabling respondents at their computer systems to connect via a browser with a server computer over a network and receive an initial set of survey questions on one or more pages during which primary images are downloaded into the browser's cache but are not presented to each respondent as they are each displayed into a small pixel area on display of the respondent's computer system and thus are not detectable or are not discernable by respondents. The server computer directs the browser of each respondent computer with at least one survey question in which the primary image is displayed from the browser's cache for a brief interval of time to the respondent, and the respondent answers the question with respect to the primary image. After each timed displayed primary image, survey question answer(s) are registered at the server computer.

Abstract: A device is provided for generating electromagnetic waves, in particular for data transfer between a vehicle and a data storage medium, whereby a choke coil (30) is provided between at least one part of an energy supply device (1, 40, 41, 42) and an oscillating circuit (6). The device provides short build-up and decay times for the resonant oscillation of the oscillating circuit (6). Furthermore, a method is provided for operation of the device, whereby the choke coil (30) is operated in the saturation state at times during the transient condition of the oscillating circuit (6). The device can be used for modulating electromagnetic waves to be generated in accordance with data to be transmitted.

Abstract: A system and method is provided for enabling respondents at their computer systems to connect via a browser with a server computer over a network, such as the Internet, and receive an initial set of survey questions on one or more pages during which primary images are downloaded into the browser's cache but are not presented to each respondent as they are each displayed into a small (e.g. 1 by 1) pixel area on display of the respondent's computer system and thus are not detectable by respondents. After receiving answers to such questions for each of the respondents, the server computer directs the browser of each respondent computer with at least one survey question in which the primary image is displayed from the browser's cache for a brief interval of time to the respondent, and the respondent answers the question with respect to the primary image. Different survey questions may be presented to the respondent having different timed displayed primary images.

Abstract: The transmitting and receiving station generates a interrogation code signal which is identical for all of the transponders. All of the transponders that receive the signal answer simultaneously at the same carrier frequency. In order to avoid signal collisions, the transponders are synchronized before and/or during the transmission of the response signals. As an alternative, each transponder is assigned a dedicated subcarrier frequency in addition to the main carrier frequency, which is the same for all of the transponders.

Abstract: A device is provided for generating electromagnetic waves, in particular for data transfer between a vehicle and a data storage medium, whereby a choke coil (30) is provided between at least one part of an energy supply device (1, 40, 41, 42) and an oscillating circuit (6). The device provides short build-up and decay times for the resonant oscillation of the oscillating circuit (6). Furthermore, a method is provided for operation of the device, whereby the choke coil (30) is operated in the saturation state at times during the transient condition of the oscillating circuit (6). The device can be used for modulating electromagnetic waves to be generated in accordance with data to be transmitted.

Abstract: An antenna system, especially for an anti-theft system of a motor vehicle. A primary magnetic field is produced by a primary coil (2). In the vicinity of the primary coil (2), a coupling coil (11) is disposed which is connected by a flexible conductor (12) with a secondary coil (13). By the magnetic connection of the primary field a secondary field can be produced through the secondary coil (13), which due to the distributed installation of the secondary coils (13) can act specifically in areas in which the primary field is not acting.

Abstract: A transmission unit includes a sine-wave generator that generates a carrier oscillation. A binary information item is modulated onto the carrier oscillation in a modulator. The modulated oscillation is fed to a transformer that forwards the modulated oscillation to a plurality of antennas connected in parallel. A method for transmitting an information item includes providing a generator having a primary side and a secondary side, a modulator, a transformer, and a plurality of antennas. The plurality of antennas is connected to the secondary side of the transformer. An information item to be transmitted is created. A sinusoidal carrier oscillation is generated. The information item is modulated onto the carrier oscillation and forms a modulated oscillation. The modulated oscillation is transformed from the primary side to the secondary side and an electromagnetic field is generated by the plurality of antennas to aid transmission of the information item.

Abstract: A control system for controlling an object function includes a base station and a portable code transmitter. The base station is at the object and has a transceiver unit for transmitting an interrogation signal. The code transmitter emits a response signal with a code information item in response thereto. The base station checks an authorization of the code information item contained in the response signal. The base station and/or the code transmitter determines a time period between a transmission of a part of the interrogation signal and a reception of a part thereof obtained in reaction thereto, and compares the time period with a predefined reference time period. The base station enables the object-specific function only if the measured time period is shorter than the reference time period even if the code information item of the response signal is correct.

Abstract: Antennas of an anti-theft system are controlled with a pulse width modulated square-wave signal by a power control unit and a phase control unit. The control is such that a change in power causes no change in phase, and vice versa. This is accomplished by varying the pulse width of the square-wave signal if a change in power occurs and at the same time shifting the pulse rise time such that the phase remains constant.

Abstract: The positioning of the buckle plate of an auto driver's safety belt so that it is within reach of the driver without the need to turn attention away from traffic in front of the auto, a dangerous maneuver often needed when the safety belt, through oversight, has to be buckled after the auto is in motion.

Abstract: An improved screw head nail includes a cylindrical machine screw and a nail having an upper end defining a nail head, a lower end defining a nail point, and a nail shank disposed therebetween. The nail shank has a centrally disposed threaded cylindrical bore extending from the nail head towards the nail point. The nail head has a generally frustoconical opening formed therethrough which is aligned with and opens onto the cylindrical bore and which, upon flattening of the nail head, protects the cylindrical bore from substantial damage and exposes the same for allowing full threaded receipt of the machine screw therein.

Abstract: An auto window molding attached to extend from a peripheral edge of the window into a gap in which it has a U-shaped configuration serving as a flow passage to drain off rain and melting snow. The free end or leg of the U-shape is provided with a first encountered concave shape and a next encountered convex shape which keeps the flow passage open when the molding is bent around the small radius corners of the window, due to abutment at the change in curvature of the leg with the U-shape that is on the window peripheral edge, which abutment limits the inward movement of the leg as could result in the closing of the flow passage.

Abstract: An added light display for alerting traffic passing left and right of a moving or parked van consisting of a light-reflecting strip advantageously positioned in a gap about the window which serves as a weather barrier compartment protecting the strip against deterioration due to weather elements and ultraviolet light impingement and permits it to provide a rectangular light display.

Abstract: Van rear door window reflective tape to provide a light display when coacting with a headlight beam of an approaching motorist that is on an inside, rather than outside, window surface so that the door of a parked van when open provides the referred-to light display and, when the door is closed and the van backed into a garage, the reflective tape coacts with a van interior rear light to provide a light display that conveys a sense of the length of the van and facilitates the parking maneuver.

Abstract: A van rear door light display having reflectors for impinging light from headlights of approaching traffic, which reflectors are positioned rearwardly when the doors are opened, as when the van is loaded and unloaded, and are strategically at different heights on the edges of the doors to obviate contact therebetween when the doors are closed.

Abstract: Taillights are located adjacent the hinge axis of, and on van right and left doors, so that a closed door displays the taillight to traffic approaching the van from the rear. Also after a door pivotal traverse into an open condition there is a display of the taillight to traffic approaching the van from the front.

Abstract: An auto windshield molding having a crown in covering relation over a gap between the windshield peripheral edge and the auto panel bounding the windshield opening which has an adhesive attachment established for the crown upon the auto panel to support the weight of an assembly of the windshield and molding attached to the windshield peripheral edge until the viscous urethane hardens to permanently bond the windshield in place, to obviate the need of a windshield-supporting dam and other benefits.