摘要:
The invention relates to an improvement for a wafer mounting table particularly for use in photolithographic apparatus for processing wafers comprising a compact mounting block made of glass-ceramics which has two neighboring back supports limiting two sides of a top face of said mounting block. The top face is provided with at least three studs for supporting a wafer to be processed. The sides of the back-supports facing away from said top face are provided with an elongated horizontally extending silvered area each, which is in opposition to a laser path measuring system each. The laser beams of said laser path measuring system define a plane which coincides with a projection plane of a projection lens being provided in opposition to a wafer mounted on said studs. Means are provided for substantially eliminating departures of the silvered areas from a straight plane. Further means are provided which enable a quick adaption of the laser mount for wafer charges having different thicknesses or diameters.
摘要:
A method determines a predicted image area for an image area, in which a temporal predictor for the image area is determined based on a reconstructed image that precedes said image, a local predictor for the image area is determined within a reconstructed image area of the image, a margin of error between the image area and the image area predicted image area is determined by the local predictor using the reconstructed image area and by the temporal predictor using one of the preceding images. A predicted image area can be reconstructed. Also disclosed are an establishing device for carrying out the method for determining a predicted image area as well as a reconstructing device for carrying out the reconstruction method.
摘要:
A temporal sequence of pictures is generated in a method for encoding of a first video stream. To do so, a synchronization signal is used which is derived from a second video stream independently of the first video stream, or the encoding of a second video stream independent of the first video stream is based on the same principle as for the encoding of the first video stream.
摘要:
A status message is sent by each node a group of nodes in a network to other nodes in the group using a multicast and/or broadcast channel of the network to identify the nodes in the group. The status message includes a piece of information about a data segment to be received by the nodes in the group via the multicast and/or broadcast channel. At least one of the nodes in the group requests the data segment via a point-to-point transmission channel from a source node. The data segment is sent to the other node(s) in the group via the multicast and/or broadcast channel.
摘要:
A method produces a data stream. The data stream is subdivided into at least one data segment. A key which is associated unambiguously with that data segment is created. A node is selected from a set of nodes in a network for that data segment on the basis of the key associated with that data segment, and the data segment is transmitted to the node selected for that data segment. Furthermore, a method calls at least one data segment in a data stream by a receiver node. A key which is associated unambiguously with that data segment is produced. A node is selected from a set of nodes in the network for the data segment on the basis of the key associated with that data segment. A request message is sent to the selected node to transmit the data segment associated with the key, and the data segment is received by the receiver.
摘要:
A method is described for transmitting a byte stream (1) from a transmitter unit to a receiver unit in a network protocol, with the following steps: Removal of at least one data area (4a,4b) of the byte stream (1) from the byte stream, Transmission to the receiving unit of information relating to which data area (4a,4b) or which data areas (4a,4b) has or have been removed from the byte stream (1) and/or relating to the way in which the shortened byte stream is to be further processed, Transmission of the byte stream (5) shortened by at least one data area (4a, 4b) to the receiver unit, which, from the information and the shortened byte stream, determines and further processes the at least one data area removed by the transmitter unit.
摘要:
An encoder encodes a video signal formed of video frames, each including image blocks. The encoder includes a processing unit which calculates at least one high resolution reference image block on the basis of previously encoded image blocks by executing a super resolution algorithm to perform a local motion compensation; and a motion compensation unit which calculates on the basis of the calculated high resolution reference image block a temporal predictor which is subtracted from a current image block of the video signal. Together, the encoder and a corresponding decoder improve the signal quality of a video signal significantly.
摘要:
The invention relates to a device and to a method for processing data packets of a data stream, in which the received data packets are processed in real-time by a first unit and only data packets that are received error-free are processed by a second unit. Data packets that are faulty or not received are requested repeatedly and routed to the second unit upon error-free receipt. A data sink initially receives only the data packets processed by the first unit. Once the second unit and first unit are processing identical data packets nearly simultaneously, only the data packets processed by the second unit are routed to the data sink. The invention can be used advantageously in video coding, for example with a video-on-demand service or image analysis within the framework of a surveillance system.
摘要:
The embodiments relate to a method for operating an audio and/or videoconference having at least two participants. A central computer, which controls the audio and/or videoconference, ascertains an identification datum of the participant initiating the conference. The central computer ascertains, on the basis of the identification datum from at least one database, which is coupled to the central computer, contact data of potential participants of the conference, the contact data being associated with the user. The contact data ascertained by the central computer are provided to the user initiating the conference as further conference participants for selection.
摘要:
A method and apparatus are provided for storing and processing picture information of temporally successive pictures wherein in each case at least one picture area is selected from each temporally preceding picture taking into account, the picture information determined from each selected picture area is stored with an assignment information item, which enables an assignment of the respective picture area and thus also of the picture information of the respective picture area to the corresponding picture and to the position of the picture area within the corresponding picture, at least one mixed picture is formed from the picture information of the respectively stored, selected picture areas, taking the account of the assignment information, and the mixed picture is used in the context of a motion estimation, a motion compensation or an error masking for an image.