Abstract: The use of a holographic video screen which appears black, gray or colored in ambient light as the display surface in a vehicle, wherein a driver can view the screen while driving without taking his eyes of the road. Additionally, the display system containing such a video screen permits the projection and viewing of multiple images on a single screen.

Abstract: A display unit for an information processing system comprises a holographic image generating system. The information processing system may be a computer, television, telephone or other information system. The display may also be used in a large format, including a matrix of individual units, for sports arenas, road signs and the like.

Abstract: In an electronic image enhancement system, a reflex image is scanned in the interior of the eye. After modification by a processor, the image is projected back into the eye along the same path, and aligned in registration with the original scanned image. An elliptical scan pattern is used.

Abstract: In an electric generating arrangement for a motor vehicle driven by an internal combustion engine, a fuel cell is provided to generate electric energy for operating electric consuming devices. For supplying the fuel cell with fuel, hydrogen gas is cracked from the liquid fuel for the internal combustion engine, and the remaining fuel constituents are either burnt directly in the internal combustion engine, or returned as a liquid condensate into the fuel tank.

Abstract: A method and apparatus for transmitting light, wherein a holographic video screen is used as part of an illuminating system. The tendency of such a video screen to backscatter light of certain wavelengths from a predefined direction into a certain solid angle area is utilized to generate holographic images at precisely defined angles. In ambient light, such a video screen need not appear black, or at least dark.

Abstract: In an electric generating arrangement for a motor vehicle driven by an internal combustion engine, a fuel cell is provided to generate electric energy for operating electric consuming devices. For supplying the fuel cell with fuel, hydrogen gas is cracked from the liquid fuel for the internal combustion engine, and the remaining fuel constituents are either burnt directly in the internal combustion engine, or returned as a liquid condensate into the fuel tank.

Abstract: A device for removing noxious and aromatic matter from a conducted air flow into the interior of a vehicle comprises an air conduction housing with a reactor containing an adsorbent. To attain consistently good adsorption and absorption power with small amounts of adsorbing and absorbing material, the air conduction housing is designed with two separate parallel air flow channels, in each of which there is a reactor in the form of a flat wall. An adsorption air flow acts upon the adsorbent in one air flow channel and a desorption air flow acts upon the adsorbent in the other air flow channel, the direction of air flow into the reactor in the adsorption operation being opposite that in the desorption operation.

Abstract: A method for operating a refrigerating unit for the air conditioning of vehicles and a refrigerating unit for carrying out the method, are provided. In order to make available refrigerating capacity, on the high pressure side of a vapor compression circuit, a pressure is produced which, with respect to the critical pressure of a refrigerant circulating in the circuit, is supercritical and, at the same time, on the low pressure side of the circuit, a subcritical pressure is achieved. In this arrangement, the circuit contains a compressor, a gas cooler, a throttle device and an evaporator which are series-connected and form an integral, closed circuit. The refrigerant, which is cooled on the low pressure side, is supplied, via the evaporator, with thermal energy, and refrigerating energy is removed.

Abstract: A system for monitoring the rear or front space of a motor vehicle being parked is provided. The system is based on a video camera having an image sharpness control, which can follow an object once detected, in terms of its sharpness, with the camera's autofocus over the whole search field, for example, by using fuzzy logic. The device uses this property for an image-processing-supported tracking of the viewing angle of a video camera which is designed to be pivotable and is used for rear-space or front-space monitoring, by which an object limiting the rearward or forward penetration depth of the vehicle can be seen up until contact with the vehicle's bumper. The device eliminates obstacles which previously prevented the use of such video cameras in the rear space monitoring of private cars. A corresponding device can also be provided and used for monitoring the front space of a vehicle.

Abstract: A device for air-conditioning the passenger compartment and for cooling the drive system of electric vehicles includes an air-guide duct connected on the inlet and outlet sides to the passenger compartment and having heat exchangers disposed one behind the other therein in the air-flow direction. One of the heat exchangers, which, together with a circulating pump and a cold store, is incorporated within a circuit of a cold-transporting medium. The circuit is run via the evaporator of a refrigeration unit. The other heat exchanger, together with a circulating pump and a heat store, is incorporated within a circuit of a heat-transporting medium. The circuit is run via the drive system of the electric vehicle for vehicle-cooling purposes.