Patent EP0706062B1 successfully refreshed from Google Patents.
EP0706062B1
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EP
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Equipment for recognizing three-dimensional shapes
Assignee: Sagem SA
•
Filing: 1995-09-18
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Granted: 2001-05-23
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Expires: 2015-09-18
Abstract
No abstract record available.
Inventors
- 👤 Phuc Nguyen-Xuan
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 19:03
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/52; G01S7/539; G01S15/00; G01S15/02; G01S15/04; G07; G07C; G07C9/00; G07C9/10; G07C9/15
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
192 words
Apparatus for three-dimensional recognition of shapes, comprising means (1) of
emitting ultrasound, to emit waves in a control space (4) in which the shapes are
located, means (2) of receiving ultrasound to receive in it echoes sent back by the
shapes, and means of processing (21-26) echoes to determine from them the shapes to
be recognised, the receiving means (2) comprising a plurality of basic receivers which
have basie reception lobes (12) extending according to a pre-determined distribution
in the control space (4) and the determination of the shapes to be recognised by said
processing means (21-26) being made by association of the reception lobes (12) and
reception times for the echoes which they receive to form pairs [lobe-echo], and by
comparison of these pairs, apparatus characterised by the fact that the emission means
(1) are arranged to emit pulses of specific duration and the processing means (21-26)
are arranged to measure the lengths of the echoes received by the receiving means (2),
calculate from them a rate of enlargement of the echoes in relation to the pulses to the
pulses emitted and determine from them a three-dimensional shape to be recognised.
Claim 2
Dependent Claim
20 words
Apparatus according to claim 1, wherein each receiver (2) is associated with
emission means (1) in an ultrasound cell (3).
Claim 3
Dependent Claim
36 words
Apparatus according to one of claims 1 and 2, wherein the processing means (21-26)
are arranged to process only echoes, relating to ultrasound emitted at a given
moment, which are received in a specific delay window.
Claim 4
Dependent Claim
39 words
Apparatus according to one of claims 1 to 3, wherein the processing means (21-26)
are arranged to compare the recognised shapes with pre-determined shapes and
consequently to control means (9) which form an access barrier to a controlled-access
zone.
Claim 5
Dependent Claim
39 words
Apparatus according to claim 4, wherein means (6) are provided for validating
access rights, accessible to users located in the control space (4), to control the means
(9) which form a barrier, in co-operation with the processing means (21-26).
Claim 6
Dependent Claim
43 words
Apparatus according to one of claims 4 and 5, wherein the receivers (2) are
disposed above a control space (4) in at least one row and have reception lobes (12),
the cross-section of which has a small axis substantially parallel to the row.
Claim 7
Dependent Claim
45 words
Apparatus according to one of claims 4 to 6, wherein the processing means (21-26)
are arranged to determine step by step a future position of a user corresponding to
lobes of the receivers (2) and to validate only the receivers (2) associated with these
lobes.
Claim 8
Dependent Claim
21 words
Apparatus according to one of claims 4 to 7, wherein the processing means (21-26)
include a library of echo types (25).
Claim 9
Dependent Claim
30 words
Apparatus according to one of claims 6 to 8, wherein the processing means (21-26)
are arranged to regulate the length of opening of the means (9) which form a
barrier.
References Cited (Backward Citations)
No citation records indexed.
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