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Priority claimed from HU9701312Aexternal-prioritypatent/HUP9701312A3/en
Application filed by Magyar Államvasutak Rt.filedCriticalMagyar Államvasutak Rt.
Priority to HU0004609ApriorityCriticalpatent/HUP0004609A2/en
Publication of HUP0004609A2publicationCriticalpatent/HUP0004609A2/en
Investigating Or Analyzing Materials Using Thermal Means
(AREA)
Abstract
The system is used for applying information to the object along a prescribed pattern, storing devices and a device for reading the information from the marked object. The device for applying the information contains elements adapted to perform local heat energy transfer along the prescribed pattern for producing markings by permanently changing the surface layer of the object to be marked to a prescribed depth. The information reading contains an energizing adapted to energize the surface layer of the marked object at least up to the depth of the marking. A detector detects a response signal invoked in the marked object by the energizing. An unit is provided for restoring information from deviations caused by local unevenness of the response signal.
HU0004609A1997-07-281998-07-28Tracking metallic objects by information incorporated therein
HUP0004609A2
(en)
Method for complex shaping of marks or a system of marks by means of modifying texture and inner stresses in materials and by non-destructive read-out of marks or packets of marks
Method and device for detecting the state of the surface of an object with a reflective surface, applicable for checking the roughness of polished objects