Abstract: A single instruction stream multiple data steam data flow signal processor and method for implementing macro data flow control, in which a plurality of data processors have contentionless access to global memory data. Data processing tasks for the data processors, such as primitive executions together with graph scheduling processes, are developed asynchronously and in parallel from a command program and a macro data flow control graph.

Abstract: A signal processing system that has an improved modular architecture so that a selected number of arithmetic element (AE) units may be utilized with a single arithmetic element controller (AEC) unit to provide a system that can be readily expanded or decreased on computational ability. All of the AE units perform similar calculations under control of the AEC unit in response to common address control and coefficient signals. Each AE unit has its own extended work store (EWS) unit with all of the EWS units responding to the same address and control signals, from either the AEC unit or an external interface unit to conform to the modular architecture. Each EWS unit is synchronized with the AE unit, thus allowing continuous and high speed computations to be performed. Also, each of the EWS units is coupled to the external interface unit for receiving and transferring data when not being accessed by the AEC unit.

Abstract: 1. A system responsive to a composite signal including first signals in the presence of second signals and detecting the presence of said first signals with a selected threshold level ratio of signal voltage to noise voltage comprisingmeans for integrating the composite signal over selected intervals of time,means for comparing a selectable threshold level with the integrated signals,means for storing data to provide said threshold level,counting means responsive to the integrated signals exceeding the threshold level to accumulate a count thereof,constant selector means responsive to the count of said counting means to establish a proportion of the value of said stored data for changing said threshold level to maintain the selected threshold level ratio,and means responsive to said constant selector means for correcting the stored data after a selected number of said intervals of time.