Device for time-resolved and space-resolved location of a miniaturised emitter

US6056695A · kind A · utility

Assignee

• Max-Planck-Gesellschaft zur Föderung der Wissenschaften e.V. · US

Inventors

• Joerg Rupp · Schwalbach, DE
• Dieter Heidmann · Geretsried, DE
• Rainer Schmitt · Meckenheim, DE
• Bertram Bresser · Dillingen/Saar, DE

Key dates

• Filing date: Dec 17, 1998
• Grant date: May 2, 2000
• Expiry date: Dec 17, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S128/903
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

What is disclosed here is a transmitting and receiving means for ultrasonic waves, comprising a miniaturized ultrasonic generator which operates inendently on a battery and which is appropriate for accommodation in a small encapsulating case for medical examinations, as well as at least one ultrasonic receiver which is connected to an analyzer which determines, with resolution in terms of time, the distance between the ultrasonic generator and the ultrasonic receiver. The invention is characterised by the provisions that the transmitting means comprises PA1 an oscillator for generating a fundamental mode, PA1 a generator for generating a pulse string which may be used to activate the ultrasonic generator, PA1 a code generator which modulates the phase of the pulse string, PA1 a phase shifter which modulates the code onto the fundamental mode, as well as PA1 a driver stage which is connected to the ultrasonic generator, and that the receiving means includes one correlation receiver per ultrasonic receiver, which compresses the pulse strings emitted by the transmitting means into distinct correlation peaks.