摘要:
The invention relates to a projection device for projecting stereo images. According to the invention, at least two partial images of the stereo image are produced with different colours by a projector, the first partial image being linearly polarised in a first direction and the second partial image being linearly polarised in a second direction perpendicular to the first direction. A colour-selective polarisation rotator is arranged in the direction of projection after the production of the image, said rotator rotating the polarisation of one of the two partial images such that the polarisation of the first and the second partial images is the same. The polarisation rotator is followed by an achromatic polarisation rotator that rotates the polarisation of the two partial images in such a way that the two partial images are linearly polarised at a pre-determined angle in relation to the vertical axis or circularly polarised in the same direction.
摘要:
The invention relates to a cooling device (1) for cooling an item to be cooled, especially for use in the examination, handling and processing of cryogenic samples. Said device comprises a cooling compartment (3) for receiving the item to be cooled, an inner wall defining the cooling compartment (3), an outer wall, a space between the outer wall and the inner wall, and a coolant feed line (11) for feeding a coolant. According to the invention, the coolant feed line (11) leads into the space between the inner wall and the outer wall and feeds the coolant into said space, the inner wall being permeable for the coolant.
摘要:
The invention relates to an interface for controlling (for example damping) mechanical vibrations for the automotive industry. The inventive interface comprises a base connection element (110), a load connection element (112) and at least one energy converting system (114, 116; 410, 416) extending between the base connection element (110) and the load connection element (112). The different energy converters of said one energy converting system (114, 116; 410, 416) have a common preferential direction and exposed to a preload action produced by a pretensioning element (118). The inventive interface also comprises a pushing force deviating element (120) mounted between the base connection element (110) and the load connection element (112) which is provided with a membrane (122) or a leaf spring disposed preferably in a perpendicular direction with respect to the preferential direction of the energy converting system (114, 116; 410, 416). The inventive pushing force deviating element (120) protects the energy converting systems (114, 116; 410, 416) against mechanical damage caused by an external pushing action.
摘要:
The invention relates to the separation of plane glass by thermal cleavage using a laser beam with subsequent cooling of the heated line generated thus, whereby the heat introduction for the thermal cleavage is achieved by repetitive multiple passage of the glass surface with the laser beam.
摘要:
The aim of the invention is to provide an intelligent system for the reproduction of information, which adapts itself to the wishes and requirements of the user in a practically imperceptible manner that involves little or no additional complexity. To achieve this, the information to be reproduced is selected randomly from information or a plurality of information, based on an adaptive probability distribution. In addition, the adaptive probability distribution is adapted in accordance with the detected user behaviour for the reproduction of the selected information. The behaviour of the user is consequently used as a controlled variable for the adaptation of the adaptive probability distribution, the latter defining the probability among the reproducible information or information objects in which the reproducible information is provided that a specific piece of information, contained in an information object, will be selected to be included in the next piece of information to be reproduced in the subsequent random selection.
摘要:
In order to control a wave field synthesis rendering device arranged in a wave field synthesis system, a scene description is used (1) in which an absolute position or an absolute time is not specified for a source but a time span or location span within which the audio object can vary. In addition, a monitor (2) is provided which monitors a capacity utilization situation of the wave field synthesis system. Finally, an audio object manipulator (3) varies the actual starting point of the audio object, which starting point is to be taken into consideration by the wave field synthesis rendering device, or the actual position of the audio object within the time span or the location span in order to avoid capacity bottlenecks on the transmission lines or in the rendering device.
摘要:
The invention concerns a method for producing non-wovens during which a cellulose carbamate solution is spun by means of extrusion through a nozzle block having a number of openings into a precipitation bath to form a number of endless threads and, afterwards, is mingled by subjecting it to a flow of a gaseous medium and/or fluid. The invention also concerns a non-woven of the aforementioned type and the use thereof.
摘要:
The invention is based on an adaptive prediction algorithm which can be controlled by a speed coefficient in order to work at a first adaptation speed and with a first degree of precision of adaptation and degree of precision of prediction in the event that the speed coefficient has a first value and with a second degree of precision of adaptation, which is lower than the first, and with a degree of precision of prediction, which is higher than the first in the event that the speed parameter has a second value, wherein the periods of adaptation occurring after the reset times during which the prediction errors are initially increased as a result of the not yet adapted prediction coefficients, are reduced by initially adjusting the speed parameter to the first value (42) and after a while adjusting it to the second value (50). When the speed parameter is readjusted to the second value after a specific time period after the reset times, the prediction errors and the residuals that are to be transferred are optimized or smaller than with the first speed parameter value.
摘要:
Parameters being a measure for a characteristic of a channel or of a pair of channels, wherein the parameter is a measure for a characteristic of the channel or of the pair of channels with respect to another channel of a multi-channel signal can be quantized more efficiently using a quantization rule that is generated based on a relation of an energy measure of the channel or the pair of channels and an energy measure of the multi-channel signal. With generation of the quantization rule taking into account a psycho acoustic approach, the size of an encoded representation of the multi-channel signal can be decreased by coarser quantization without significantly disturbing the perceptual quality of the multi-channel signal when reconstructed from the encoded representation.
摘要:
The invention relates to a conference terminal for a digital voice conferencing system. Said terminal comprises a first sound converter unit (56), which is configured to generate a microphone signal from an acoustic signal, a second sound converter unit (60), which is configured to generate an acoustic signal from a loudspeaker signal, a connecting device (64), which is configured to facilitate a connection between the conference terminal (50) and a central conference unit, in order to receive a collective conference signal from the central conference unit. The terminal also comprises a unit (52) for echo suppression, which is configured to combine the microphone signal or a signal derived from the latter in a listening mode with the collective conference signal in a noise-suppression device, to produce a loudspeaker signal containing a reduced acoustic signal, on which the microphone signal is based. A conference terminal of this type permits the suppression of a remote intrinsic echo and a remote extraneous echo. The invention permits the configuration of digital, wireless voice conferencing systems that guarantee a high voice-rendition quality and interference immunity with minimal wiring requirements.