Abstract: The invention relates to a data processing system for performing a polyphase filtering. This circuit comprises functional units (304, 305, 306) able to perform polyphase filterings, and a memory device (301, 302, 308) for storing data and coefficients. The functional units receive in parallel data and coefficients coming from the memory device, calculate results from the data and coefficients and supply these results to the memory device.

Abstract: The present invention relates to a communicating data system comprising devices (11, 12, 13, 14) for routing said data that are interconnected by communication links, the data being transmitted in packets and a packet comprising a header. A transmitting part of a first routing device (12) comprises first storage means suitable for storing a value of at least one parameter from said header and for transmitting a coded value corresponding thereto, and first entropy coding compression means which are suitable for recoding the uncoded value, the recoded value being stored instead of the coded value after the latter is transmitted along a communication link (15).

Abstract: The invention relates to a processing system comprising a calculation device comprising at least one calculation unit (13), a storage device and a system for switching between the storage device and the calculation device. In order to reduce the size of the switching system, the storage device comprises several banks of registers (21, 22) for storing words, the switching system comprises at least one switching device (24) associated with each bank of registers and the calculation units exchange a word with a bank of registers by means of the associated switching device.

Abstract: The invention relates to a data processing system for performing a polyphase filtering. This circuit comprises functional units (304, 305, 306) able to perform polyphase filterings, and a memory device (301, 302, 308) for storing data and coefficients. The functional units receive in parallel data and coefficients coming from the memory device, calculate results from the data and coefficients and supply these results to the memory device.

Abstract: The invention relates to a processing system comprising a calculation device comprising at least one calculation unit (13), a storage device and a system for switching between the storage device and the calculation device. In order to reduce the size of the switching system, the storage device comprises several banks of registers (21, 22) for storing words, the switching system comprises at least one switching device (24) associated with each bank of registers and the calculation units exchange a word with a bank of registers by means of the associated switching device.

Abstract: The invention relates to a processing system for processing program instructions (I1) by calculating units (16). To enable constraints of the real-time type to be satisfied, points in time (t1) at which the instructions have to be executed are defined, and the instructions are in fact executed at these points in time. To this end, the processing system comprises means (14) for comparing these points in time with an execution time (13), and firing means (15) suitable for causing the instructions to be executed, or not, by the calculating units as a function of the comparison. A block of instructions is associated with at least one tag representing one point in time at which it has to be executed. The tags are stored in a content-addressable memory (22) that is suitable for comparing a given tag with the execution time, and for supplying a descriptor (B1*) describing the block of instructions corresponding to this given tag when there is a match between this given tag and the execution time.

Abstract: The present invention relates to a communicating data system comprising devices (11, 12, 13, 14) for routing said data that are interconnected by communication links, the data being transmitted in packets and a packet comprising a header. A transmitting part of a first routing device (12) comprises first storage means suitable for storing a value of at least one parameter from said header and for transmitting a coded value corresponding thereto, and first entropy coding compression means which are suitable for recoding the uncoded value, the recoded value being stored instead of the coded value after the latter is transmitted along a communication link (15).