Title:
温度の記録と記憶
Document Type and Number:
Japanese Patent JP2008500530
Kind Code:
A
Abstract:
In a temperature-recording method for recording a temperature by means of an electrical circuit of a data storage medium, which electrical circuit is suppliable with energy by means of a signal feedable to the data storage medium, provision is made for a physical variable dependent on the temperature to be recorded by means of the circuit supplied with energy, the physical variable being influenced by a temperature-recording material (1, 7), preferably a piezoelectric or ferroelectric material, co-operating with the circuit, which material comprises alignable electric or magnetic elementary dipoles (3), and for which temperature-recording material (1, 7) a Curie temperature is known, exceeding of which causes the alignment of the elementary dipoles to be lost, and the temperature-recording material (1, 7) being selected in such a way that its known Curie temperature corresponds to a pre-determined limit temperature.
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Inventors:
Achim, Hirgers
Application Number:
JP2007514231A
Publication Date:
January 10, 2008
Filing Date:
May 17, 2005
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
G01K7/34; G01K1/02; G01K3/04; G01K7/00; G01K7/36; G01K7/38; G01K11/06
Attorney, Agent or Firm:
Kenji Yoshitake
Hidetoshi Tachibana
Yasukazu Sato
Hiroshi Yoshimoto
Yasushi Kawasaki
Hidetoshi Tachibana
Yasukazu Sato
Hiroshi Yoshimoto
Yasushi Kawasaki