The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 29, 1988
Filed:
May. 06, 1987
Ulrich Saugeon, Nuremburg, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
A method and apparatus for digitally delaying ultrasound signals, which are reflected from a boundary surface inside of an examination subject, upon reception of the signals at an ultrasound receiver employ, in each channel, a shift register, a first multiplexer, another register, and interpolator and a further multiplexer to effect a selected delay. A number of interpolated ultrasound signals is formed from two successively received ultrasound signals. If the successive ultrasound signals are shifted by .DELTA..tau., the interpolated ultrasound signals will be shifted by a smaller time difference relative to each other, dependent on the fineness of the interpolation. That interpolated ultrasound signal or that received ultrasound signal having a delay value which is closest to a selected desired delay value is employed for further signal processing. A high precision in the chronological resolution can thus be achieved with a relatively low sampling rate in comparison to the chronological resolution.