US 7,458,039 B2
Electronic stream processing circuit with locally controlled parameter updates, and method of designing such a circuit
Edwin Jan Van Dalen, Eindhoven (Netherlands); Abraham Jan De Bart, Beijing (China); and Paulus Wilhelmus Franciscus Gruijters, Eindhoven (Netherlands)
Assigned to NXP B.V., Eindhoven (Netherlands)
Appl. No. 10/597,992
PCT Filed Feb. 02, 2005, PCT No. PCT/IB2005/050439
§ 371(c)(1), (2), (4) Date Aug. 15, 2006,
PCT Pub. No. WO2005/083583, PCT Pub. Date Sep. 09, 2005.
Claims priority of application No. 04100654 (EP), filed on Feb. 19, 2004.
Prior Publication US 2008/0155491 A1, Jun. 26, 2008
Int. Cl. G06F 17/50 (2006.01); G06F 15/78 (2006.01)
U.S. Cl. 716—1  [716/6] 9 Claims
OG exemplary drawing
 
4. An electronic circuit, comprising:
a chain of stream processing circuits (10a-c), mutually coupled to pass respective streams of sample values between pairs of successive stream processing circuits, at least part of the stream processing circuits (10a-c) having a control parameter input for receiving control parameter values;
a common control circuit (14) arranged to select block sizes of blocks of samples in the respective streams of a plurality of the stream processing circuits (10a-c), to select a control parameter value for each particular block and to transmit instructions specifying the selected block sizes and control parameter values;
a plurality of local control circuits (11), each coupled to the common control circuit (14) and the control input of a respective corresponding stream processing circuit (10a-c) from the chain, each particular local control circuit (11) being arranged to receive at least part of the instructions and to apply parameter values from the instructions to its corresponding stream processing circuit (10a-c), the particular local control circuit (11) controlling timing of control parameter updates using block sizes from the instructions by counting off block size dependent time intervals between times points of successive control parameter updates.