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:
Dec. 16, 2008
Filed:
Mar. 30, 2007
Daniel Edward Brueske, Sammamish, WA (US);
D-l Donald Liu, Issaquah, WA (US);
Steven Martin, Issaquah, WA (US);
Brian Colby, Renton, WA (US);
Daniel Edward Brueske, Sammamish, WA (US);
D-L Donald Liu, Issaquah, WA (US);
Steven Martin, Issaquah, WA (US);
Brian Colby, Renton, WA (US);
Siemens Medical Solutions USA, Inc., Malvern, PA (US);
Abstract
Ultrasound information for B-mode and CW Doppler mode use the same digital beamformer. Due to sigma-delta conversion or over sampling, sufficient dynamic range is provided for the desired bandwidth. By mixing the input ultrasound information to base band before conversion, additional dynamic range may be provided. The electrical impedance may be better matched to elements by connecting a different number of sigma-delta converters to an element. Elements with lower impedance may be connected to a plurality of sigma-delta converters. To increase the aperture size for elements with a higher impedance, the same sigma-delta converters may be used as separate receive beamformer channels without the summation.