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:
Apr. 22, 1997
Filed:
Sep. 29, 1995
Siemens Medical Systems, Inc., Iselin, NJ (US);
Abstract
An ultrasonic imaging system has a three-dimensional acoustic display. Beam-formed ultrasound scan signals are separated into channel signals and are then filtered using head-related transfer function (HRTF) filters. An HRTF is associated with each of several points in an interrogation region. A filter coefficient processor selects, for each channel signal, a set of HRTF filter parameters according to which sample volume the channel signal comes from. Each HRTF parameter set defines left-ear and right-ear response functions to a calibration sound generated at a calibration point in a calibration space; the calibration point itself corresponds to a predetermined position in the interrogation region. The HRTF-filtered channel signals are then combined into left and right audio output signals which drive left and right speakers that the user listens to while performing the ultrasound scan. The calibration points in the calibration space are mapped to respective reference sample volumes located in a predetermined ultrasonic interrogation region.