Charge coupled device

Details Charge coupled device Charge coupled device

H - Electricity

03

H

328/188

H03H 7/30 (2006.01) G01S 7/534 (2006.01) G10K 11/34 (2006.01) G11C 27/04 (2006.01) H03H 15/02 (2006.01)

Patent

CA 1139376

ABSTRACT A time delay and integrate signal processing device has input taps for receiving a plurality of signals and has delay stages in the path of signal samples from the input taps arranged such that signal samples may be transferred from one stage to the next in response to a clock signal applied at a clock input. In use, a clock signal having a duty cycle which varies linearly with time at a predetermined rate is applied, wherein the number of stages in the path of signals from each input tap is determined in accordance with a predetermined function of the rate of change of the clock duty cycle. Embodiments of the invention may be employed to advantage in SONAR applications where signals are received from a plurality of transducers to scan a sector by constructive summation of signal returns. The predetermined function may be chosen to minimise distortion during a scan and so scanning may take place at a higher rate than with prior art devices enabling full coverage of the sector with good range resolution to be achieved with a single device.

338318

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