Title (en)

Object identification.

Title (de)

Gegenstandsidentifizierung.

Title (fr)

Identification d'objets.

Publication

EP 0356582 A1 19900307 (EN)

Application

EP 88307285 A 19880805

Priority

EP 88307285 A 19880805

Abstract (en)

A system classifies objects by driving them into mechanical resonance and then detecting the frequencies and relative amplitudes of some of the resonant frequencies of the object. This detection is carried out by using a microphone to listen to the sound produced by the object.

IPC 1-7

G07C 3/14; G07D 5/06; G07F 3/02

IPC 8 full level

G07C 3/14 (2006.01); G07D 5/00 (2006.01)

CPC (source: EP)

G07C 3/14 (2013.01); G07D 5/00 (2013.01)

Citation (search report)

• [X] CH 656240 A5 19860613 - CLAUDE ERIC JAQUET
• [X] EP 0219574 A2 19870429 - TELEFONICA NACIONAL ESPANA CO [ES]
• [X] US 3543930 A 19701201 - DELBRIDGE WILFRED RICHARD, et al
• [A] EP 0184393 A2 19860611 - MARS INC [US]
• [A] WO 8300400 A1 19830203 - GNT AUTOMATIC AS [DK]
• [E] GB 2200778 A 19880810 - GEN ELECTRIC CO PLC

Designated contracting state (EPC)

AT BE CH DE ES FR GR IT LI LU NL SE

DOCDB simple family (publication)

EP 0356582 A1 19900307

DOCDB simple family (application)

EP 88307285 A 19880805