Title:
【発明の名称】音響-機械式確認送信器
Document Type and Number:
Japanese Patent JP2003501757
Kind Code:
A
Abstract:
An access-controlled system includes a portable identification device and a control unit with which the encoded information on the identification device can be read. The control unit allows a user access to the system once the identity of the identification medium has been established. The portable identification device includes a signal generator device configured for generating a reproducible acoustic signal in a mechanical manner. The reproducible acoustic signal includes a clacking noise, a frequency spectrum of the clacking noise encoding information. The signal generator device includes a tongue, plate, and/or curved surface that folds upon an overcoming of an initial resistance, the folding generating the clacking noise. The tongue, plate, and/or curved surface springs back to an original position subsequent to being acted upon.
Inventors:
Trinkel, Marian
Application Number:
JP2001502077A
Publication Date:
January 14, 2003
Filing Date:
May 26, 2000
Export Citation:
Assignee:
Deutsche Telecom AG
International Classes:
E05B49/00; G06K19/06; G06K19/077; G07C9/00; G07F7/00; G07G1/12; B42D15/10; G10K9/12; H04M17/02; (IPC1-7): G06K19/06; B42D15/10; E05B49/00; G07G1/12; G10K9/12
Attorney, Agent or Firm:
Masao Okabe (10 outside)