Device for programmable delay of an analog signal and correspond

Details Device for programmable delay of an analog signal and correspond Device for programmable delay of an analog signal and correspond

1996-04-24

1999-03-16

Malzahn, David H.

Boots, shoes, and leggings

364715011, G06F 1300

Patent

active

058838228

ABSTRACT:
A device for programmable delay of an analog signal in an acoustic antenna that comprises at least one analog/digital converter circuit delivering, from the analog signal, a digital signal at a first sampling frequency, followed by a delay memory receiving the digital signal in write mode, making it possible to store M consecutive samples in memory. A circuit for write and read access to the delay memory is provided to address the delay memory in write and read mode, which, under read access control, delivers a series of samples delayed by a defined value, a function of the number of samples M stored therein. A sub-sampling circuit receives the delayed digital signal and delivers a sub-sampled delayed digital signal at a second sampling frequency less than the first sampling frequency.

REFERENCES:
patent: 3997772 (1976-12-01), Crochiere et al.
patent: 4271483 (1981-06-01), Baldwin et al.
patent: 5157395 (1992-10-01), Signore et al.
patent: 5648777 (1997-07-01), Bays et al.
patent: 5677858 (1997-10-01), Takeda et al.

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