Abstract: A modular data center includes an outer wall having an opening formed therein. The opening is configured to enable a busway to pass through the outer wall. The modular data center further includes an electrical box configured to be coupled to the busway. The electrical box is positioned inboard with respect to the outer wall. The modular data center further includes a shroud configured to extend through the opening of the outer wall. The shroud includes a plurality of outer edges coupled to an outer surface of the outer wall. The modular data center further includes a cover, including a cover opening, configured to enable the busway to pass through the cover opening, and to at least partially seal the opening of the outer wall having the busway passing therethrough.

Abstract: A stand for an X-ray examination apparatus like a C-arm (4) is proposed. The stand comprises a movable ceiling support assembly for a ceiling of a room, a ground support assembly for a floor of the room and a holder (16) extending from the ceiling support assembly to the ground support assembly. The ceiling support assembly is distanced laterally from the ground support assembly and the holder comprises a mount (30) for holding the X-ray examination apparatus above the ground support assembly. Provision of a holder between a ground support assembly and a ceiling support assembly allows to position the ceiling-rail at a distance to a patient's area where the C-arm is employed. Therefore, no dust and debris from a ceiling-rail is released over the patient's area and a sterile air flow from a ceiling is not disturbed. By pivoting the stand through a pivot bearing (14) the C-arm can be easily brought into a parking position where it does not obstruct the patient's area.

Abstract: A diagnostic system includes an image acquisition unit (1), an image coding and recording unit (2) and an image information retrieval unit (9). The image acquisition unit (1) acquires moving-image information relating to an object (3) to be examined which information represents a series of images that succeed one another in time. The image coding and recording unit (2) includes a first coding unit (4) for converting the series of images into a first data stream in accordance with first conversion rules optimised for the compression of moving-image information, and a second coding unit (6) for converting the series of images into a second data stream in accordance with second conversion rules optimized for the compression of still-image information. The average amount of information per coded image is smaller for the first coding unit (4) than for the second coding unit (6).

Abstract: In a system for recording and displaying still and moving images, the still images are recorded on a record carrier (8) in a loss-free manner and with a low compression factor, whereas the moving images are recorded with a high compression factor and an algorithm which is not loss-free. For medical images, for example cardiac images, processing of the images prior to display is desirable. For the moving images the image processing (5) is performed prior to compression (4) and recording (7). For the still images the processing (19) is performed after the images have been read from a record carrier (8) and reconstructed. A raw version of the loss-free still images thus remains available for analysis (20).

Abstract: A device for deriving a synchronizing signal comprises a synchronizing signal detector (1) having an output (3) is coupled both directly and via a delay unit (18) to inputs (4 and 19, respectively) of a signal combination unit (5). The output (6) thereof is coupled to an input (7) of a flywheel counter (8). One output (9) of the flywheel counter supplies the synchronizing signal. Another output is coupled to an input (11) of the signal combination unit. The first input (4) and the second input (11) of the combination unit are coupled to inputs of a time slot circuit (12). The first input (4) and the third input (19) of the combination unit are coupled to inputs (20, 21) of a further combination unit (14). The output of the time slot circuit is also coupled to an input (13) of the further combination unit (14). The delay time (T) of the delay unit (18) is equal to n times the period of the synchronizing signal.

Abstract: The present invention provides a transmission method denoted as the "color shift" method. Therein the composite color video signal, which is formed by a sequence of analog line signals, is sampled, as a result of which each analog line signal is converted into a time-discrete line signal formed by a plurality of line signal samples occurring at a rate f.sub.s, each sample being formed from the sum of a luminance and a chrominance signal sample. Thereafter, these time-discrete line signals are submitted to a scrambling operation in which, in accordance with a predetermined pattern, a number of line signal samples is, each time, selected from the line signal samples of a group of time-discrete line signals for assembling time-discrete auxiliary line signals. This selection is effected such that of all those line signal samples which together represent a given time-discrete auxiliary line signal, the associated chrominance signal samples all have the same polarities.

Abstract: A device is described for correcting and concealing a data stream which is block-wise provided with redundancy. The redundancy has an error-correction capability per block. The blocks are received from a medium in a systematically distributed manner. After regrouping, error-signalling is formed per block by way of the error-correction code. For a number of successive blocks the total number of expected errors is compared with a threshold which lies within the error-correction capability of the code. When this threshold is exceeded, concealing takes place, even when the total maximum correction capability of the code has not yet been fully utilized.

Abstract: Differential pulse code modulation transmission system in which the transmitter and the receiver each comprise a prediction circuit for generating a prediction signal from the transmitted DPCM-signal. This prediction circuit is in the form of two or more prediction channels 710(i) each consisting of a non-linear network 711(i) followed by a leaky integrator circuit 700(i). The inputs of these prediction channels are connected to a common input 701 and the output of each prediction channel is connected to an input of a summing device 712, which produces the desired prediction signal.

Abstract: Differential pulse code modulation transmission system comprising a transmitter and a receiver. In the transmitter there is subtracted from an information signal x(n) to be transmitted, a prediction signal y(n) for the purpose of generating a difference signal e(n), which is quantized and converted into a quantized difference signal in a quantizing arrangement 6. This difference signal is applied to a prediction circuit 7 for generating the prediction signal. It is also transmitted to the associated receiver. In that receiver a similar prediction signal is generated by means of a similar prediction circuit, which prediction signal is now added to the received quantized difference signal.

Abstract: In order to obtain a reduction of the bit rate when digitizing a color video signal using a picture transform, the color video signal is sampled with a frequency which is twice the color auxiliary carrier frequency. The video signal samples thus obtained are assembled into two-dimensional subpictures each comprising P consecutive video signal samples of each time Q consecutive line signals. Each subpicture can be considered as the sum of a series of superposed basic pictures, each having its own coefficient (which is a weighting factor representing the contribution of the basic picture in the subpicture). Each coefficient is encoded with a number of bits assigned thereto. The basic pictures are assembled from picture squares which are either of a first type (completely white) or a second type (completely black). The Hadamard matrix transform determines the basic picture patterns.

Abstract: A method of and arrangement for digitizing a video signal using a picture transform coding, wherein a group of N video signal samples is converted into a group of N coefficients y(m) wherein m=1, 2, 3, . . . N which are each adaptively encoded.In order to prevent a coefficient y(m) which is on average small to very small, from being insufficiently accurately encoded, or not encoded at all, when it is occasionally large, the group of coefficients is compared with a number of fixed classification groups A(j) each consisting of M elements a(j,m), wherein a(j+l,m).gtoreq.a(j,m) and j=1, 2, 3, . . . M. The j is determined in such manner that y(m)<a(j,m) for all m.A bit-assignment group B(j) having elements b(j,m) is associated with each classification group A(j) and each one of the N coefficients y(m) is now converted into a code word z(m) which contains a number of bits which is characterized by b(j,m) and which is, for example, equal to the value of b(j,m).