U.S. Philips Corporation

Roberto Woudsma

Harald Bauer

Dietmar Lorenz

Peter Meyer

Stephanus M Borgers

Egidius A Habraken

Lambertus Spaanenburg

Peter B Duin

Arie A Van Der Poel

David C Chong

David P Elias

Brian T McSweeney

Andrew C Turley

Signal processor

The invention relates to a data processing system, having a number of data processing units and a program memory for instruction words, each of which has separate command fields for the various data processing units so that the data processing units can be independently controlled by means of a program. The data terminals of the data processing units are interconnected via various buses. The connections established by the buses are controlled, via an expander, by way of a control field in the instruction word. The expander provides a limited repertory of feasible connections, selected in dependence on the type of program.

Data processing system

A one-dimension transformer for use in Transform Picture Coding converts each of a series of N input words into a series of N product words by multiplying this series and a transform matrix of N.times.N transform elements. This transformer has a main input connection bus (14.22) which receives the series of input words, a main output connection bus (14.29) at which the desired N product words occur successively and furthermore three data connection buses (14.23; 14.24; 14.25). For performing the required mathematical operations three circuits are provided; two combination circuits (14.30 and 14.31) for adding or subtracting data words applied thereto to generate result words at their outputs and a multiplier circuit 14.32 for multiplying a data word applied thereto by a mulitplication factor which is related to the transform elements to generate an auxiliary product word at its output. The associated output of each of these three circuits is connected to a different one of the three data connection buses. Furthermore a set of switches SW is associated with each of these three circuits, which switches are controlled in such a way that the input of the relevant circuit can be connected at any instant to at most one of the connection buses which are not connected to the output of the relevant circuit. The main output connection bus (14.29) is selectively connectable at any instant to at most one of the data connection buses (14.23; 14.24; 14.25) by means of a further set of switches (SW10, SW11, SW12).

One-dimensional linear picture transformer

A very large scale integrated circuit comprises a number of function blocks which are synchronized by relevant clock signals. Each function block forms an isochronous region so that the delay times of the signals within the relevant function block can be negligibly small with respect to the gate delay times. Each function block is paired with at least one other function block in that the pair is connected by an information connection and by at least two synchronization handshake lines for transporting synchronization signals dispatched by each function block of the pair to the other function block of the pair so that an asynchronous information transport is obtained. One or more of the function blocks comprises an information connection to the environment. As a result of this set-up, the circuit can also be tested and designed per function block.

Very large scale integrated circuit subdivided into isochronous regions,

Growing community of inventors

Nuenen, Netherlands

Roberto Woudsma