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A fluid-motion-powered modulated reflector apparatus is provided that modulates the frequency of a reflected radiation signal. Passing the apparatus through a fluid such as air causes rotational velocity of a chopping wheel or, in some instances, a polarizing filter rotatably connected to propeller

A fluid-motion-powered modulated reflector apparatus is provided that modulates the frequency of a reflected radiation signal. Passing the apparatus through a fluid such as air causes rotational velocity of a chopping wheel or, in some instances, a polarizing filter rotatably connected to propeller blades. The radiation signal is modulated by the blocking effect of a chopping wheel or a fixed polarizing filter and a rotating polarizing filter. The apparatus also can include a frequency selector to control the rotational velocity of the chopping wheel or rotatable polarizing filter. A fluid-motion-powered modulated reflector system may include an array of fluid-motion-powered modulated reflectors, each differently modulated by a frequency selector to allow a position sensor, such as a duo-lateral photodiode position sensing detector, and position determining system, to locate and determine the position of each individual retroreflector simultaneously. This system can be used for aerial refueling of unmanned combat air vehicles.

대표청구항 ▼

A fluid-motion-powered modulated reflector apparatus is provided that modulates the frequency of a reflected radiation signal. Passing the apparatus through a fluid such as air causes rotational velocity of a chopping wheel or, in some instances, a polarizing filter rotatably connected to propeller

A fluid-motion-powered modulated reflector apparatus is provided that modulates the frequency of a reflected radiation signal. Passing the apparatus through a fluid such as air causes rotational velocity of a chopping wheel or, in some instances, a polarizing filter rotatably connected to propeller blades. The radiation signal is modulated by the blocking effect of a chopping wheel or a fixed polarizing filter and a rotating polarizing filter. The apparatus also can include a frequency selector to control the rotational velocity of the chopping wheel or rotatable polarizing filter. A fluid-motion-powered modulated reflector system may include an array of fluid-motion-powered modulated reflectors, each differently modulated by a frequency selector to allow a position sensor, such as a duo-lateral photodiode position sensing detector, and position determining system, to locate and determine the position of each individual retroreflector simultaneously. This system can be used for aerial refueling of unmanned combat air vehicles. Henry, 242/366.4; US-2678173, 19540500, Phelps; US-2771180, 19561100, Barker; US-3106354, 19631000, Kitselman, 242/364.11; US-3747863, 19730700, Klementz et al., 242/364.11; US-3834600, 19740900, Benchemoul; US-3917141, 19751100, Sartori; US-3988101, 19761000, Aspin; US-4172544, 19791000, Pennings et al., 226/097.4; US-4678132, 19870700, Fowler et al., 242/364.11; US-4817880, 19890400, Lenk et al., 242/366; US-4890800, 19900100, Lenk et al., 242/366; US-5103876, 19920400, Benz et al.; US-5632308, 19970500, Bucher et al., 139/028 m 5, characterized in that the data processing means (11) include processing detection means (19), which are designed to detect a processing of data (VD) and which upon detection of the processing of data (VD) are designed to generate the control signal (S). 7. A data carrier (1) as claimed in claim 5, characterized in that the chip (10) includes memory means (14), and the chip (10) includes access detection means (20), which are designed to detect an access to the memory means (14) and, upon detection of an access to the memory means (14), to generate the control signal (S). 8. A chip for a data carrier (1) including at least one integral circuit component (24, 29) which is designed for communicating with a component communications means (17) and which is spatially separated from the chip (10) and which has a supply voltage input (25, 30), to which a supply voltage (V1, V2) can be applied, which chip (10) has a supply voltage circuit point (12) from which a supply voltage (V) can be taken, characterized in that the chip (10) has a supply voltage output (21, 22), end the supply voltage output (21, 22) is to be connected to the supply voltage input (25, 30) of the component (24, 29) via a connection lead (27, 32), and the chip (10) includes controllable potential control means (35, 49) to which a control signal (S) can be applied and with the aid of which the supply voltage output (21, 22) can be set to different potential values in accordance with the control signal (S) and in response to attempted data access by an unauthentic user such that said user cannot access data. 9. A chip (10) as claimed in claim 8, characterized in that the chip (10) has potential control means (35, 49) in the form of isolation means (36, 50) between the supply voltage circuit point (12) and the supply voltage output (21, 22), which isolation means are designed to receive an isolation signal (T) which forms the control signal (S) and to isolate the supply voltage output (21, 22) from the supply voltage circuit point (12) in accordance with the isolation signal (T). 10. A chip (10) as claimed in claim 9, characterized in that the isolation means (36, 50) include isolation switching means (40, 54), with the aid of which the supply voltage output (21, 22) can be isolated from the supply voltage circuit point (12), and the isolation means (36, 50) include isolation control means (39, 53), which are designed to control the isolation switching means (40, 54) in accordance with the isolation signal (T). 11. A chip (10) as claimed in claim 10, characterized in that the isolation switching means (40, 54) include a flint transistor (41, 55) and a second transistor (42, 56). 12. A chip (10) as claimed in claim 11, characterized in that the chip (10) includes data processing means (11), and a part (18) of the data processing means (11) is designed to generate the control signal (S). 13. A chip (10) as claimed in claim 12, characterized in that the data processing means (11) include processing detection means (19), which are adapted to detect a processing of data (VD) and which upon detection of the processing of data (VD) are designed to generate the control signal (S). 14. A chip (10) as claimed in claim 12, characterized in that the chip (10) includes memory means (14), and the chip (10) includes access detection means (20), which are designed to detect an access to the memory means (14) and, upon detection of an access to the memory means (14), to generate the control signal (S). 15. A method for preventing data access by an unauthentic user during the interaction between data carrier (1) and a component communication means (17), wherein: (a) access detection means (20) detects access to security-related memory data (SD) from said communication device; (b) upon detection, access detection means (20) generates an isolation signal (T) and supplies it to a first isolation means (36) and a second isolation means (50); (c) a first supply voltage output (21)