Device for forming channels using detectors spaced out on a circular base
AssigneeCompagnie Industrielle des Telecommunications Cit-Alcatel
InventorGuy Parent
Life of this patent
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Abstract
Device for forming channels using detectors spaced out on a circular base, comprising detectors evenly spaced out and followed by coders, means for distributing the data supplied by those coders, a chain constituted by an alternate sequence of delay devices and adders; the distributing means are simplified and comprise an input shift register associated with buffer memories. Application to the determining of the propagation of a plane wave in sonars.
Claims18
Device for forming channels comprising H detectors evenly spaced along an arc of a circular base:
- H coders, each coder being connected to the output of a detector for transcoding the analog output signal of the detector into a signal having s bits (s .gtoreq. 1),
- Means (200) for sampling and memorizing the signals coming from the H coders,
- A bus bar system (300) on which the signals memorized as a whole pass,
- Means (400) for sampling at the frequency F.sub.H the signals on the bus bar system (300),
- Control means (500) for the sampling means (400),
- (N-1) secondary adders (51, 52), the inputs of which are fed by the sampling means (400),
- A chain (40) constituted by an alternate sequence of (N-1) delay devices (31, 32) and of (N-1) main adders (41, 42), where (2N-1 <
- H), each main adder (41, 42) comprising an input (A) connected to the output of a delay device (31, 32) and a lateral input (B) connected to the output of a secondary adder (51, 52), each delay device (31, 32) comprising at least an elementary cell, the chain input being fed by said sampling means (400), and
- A clock (100) delivering a frequency F.sub.H to the control means and to the chain (40) for controlling the transfer of the signals along the chain (40) so that the signals stay only during a period 1/F.sub.H in an elementary cell.
Device for forming channels comprising H detectors evenly spaced along an arc of a circular base:
- H coders, each coder being connected to the output of a detector for transcoding the analog output signal of the detector into a signal having s bits (s .gtoreq. 1),
- Means (200') for sampling and memorizing the signals coming from the H coders,
- A bus bar system (300') on which the signals memorized as a whole pass,
- Means (400') for sampling, at the frequency F.sub.H the signals on the bus bar system (300'),
- Control means (500') for the sampling means (400'),
- A chain (40') constituted by an alternate sequence of (N-1) delay device (31', 32') and of (N-1) main adders (41', 42'), where (2N <
- H), each main adder (41', 42') comprising an input (A) connected to the output of a delay device (31', 32') and a lateral input (B).
- N secondary adders (50', 51', 52'), the inputs of which are fed by the sampling means (400'), the output of one of the secondary adders (50') being connected to the input of the chain (40') and the output of the (N-1) others (51', 52') being connected to the lateral input (B) of a main adder (41', 42'), each delay device (31', 32') comprising at least an elementary cell, and
- A clock (100') delivering a frequency F.sub.H to the control means and to the chain (40') for controlling the transfer of the signals along the chain (40') so that the signals stay only during a period 1/F.sub.H in an elementary cell.
Dependencies are inferred from the claim text.