US4644795A
Expired / Lapsed
US
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High resolution multiline ultrasonic beamformer
Assignee: Advanced Technology Laboratories Inc
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Filing: 1985-07-29
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Granted: 1987-02-24
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Expires: 2005-07-29
Abstract
Abstract The present invention is a multiline beamformer for use in a medical ultrasound scanner using a phased array transducer. Lines of ultrasound energy are generated having a pressure at the array aperture corresponding to sin (πx)/πx, where x is the normalized distance of the array element measured from the center of the array. This transmitted energy creates a flat field in space which can then be received in multiple receive lines, using bundled, parallel time delays.
Inventors
- 👤 Larry J. Augustine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:12
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/52; G01S7/52017; G01S7/52085; G01S7/52095; G01S7/52077; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/34; G10K11/341; G10K11/348
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A multiline beamformer for use with a phased array ultrasound transducer comprising: (a) means for transmitting lines of ultrasound having pressures at the array aperture which correspond to the formula sin (πx)/πx, where x is the normalized distance measured from the center of the array; and (b) a plurality of bundled delays for generating received ultrasound lines, the number of such delays corresponding to the multiple of received lines generated for each line transmitted.
Claim 2
Dependent Claim
74 words
A multiline beamformer for use with a phased array ultrasound transducer comprising: (a) means for transmitting lines of ultrasound having pressures at the array aperture which correspond to the formula sin (πx)/πx, where x is the normalized distance measured from the center of the array; and (b) a plurality of bundled delays for generating received ultrasound lines, the number of such delays corresponding to the multiple of received lines generated for each line transmitted.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-23 | 1990-08-25 | 1991-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-23 | 1994-08-25 | 1995-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-23 | 1998-08-25 | 1999-02-24 | $7700.00 | Window Closed / Lapsed |