US3593254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sonography system
Assignee: CBS Broadcasting Inc
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Filing: 1969-01-28
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Granted: 1971-07-13
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Expires: 1989-01-28
Abstract
Abstract As described herein, the output signals generated by a plurality of hydrophones arranged in a generally rectangular array are scanned line-by-line by a signal having a selected frequency. The scanned signals are then combined with a reference signal which is generated by a centrally disposed hydrophone and which is selectively phased with respect to each of the scanned output signals. The selective phase relationship between the reference signal and each of the other scanned signals is maintained by appropriately shifting the phase of the reference signal at a frequency corresponding to the frequency of the line scanning frequency. The combined signals are thereafter recorded in a line-by-line pattern on thermoplastic film.
Inventors
- 👤 William E Glenn Jr
- 👤 Frank B Gorman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:51
CPC Classifications
G; G01; G01S; G01S15/00; G01S15/88; G01S15/89; G01S15/8906; G01S15/8965; G01S15/897; G01S7/00; G01S7/52; G01S7/56; G01S7/60
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
113 words
A sonography system comprising a plurality of sound intensity receptors arranged in a predetermined array and responsive to acoustic waves in an object field for developing signals corresponding to the intensities of the waves, means responsive to one of said signals for generating a reference signal selectively phased with respect to the oTher of said signals, means for sequentially scanning the other of said signals, means responsive to the scanned signals and to the reference signals for combining said signals to produce joint intensity signals and recording means, including a storage medium, for recording the joint intensity signals on the storage medium in a pattern corresponding to the array of sound intensity receptors.
Claim 2
Dependent Claim
113 words
A sonography system comprising a plurality of sound intensity receptors arranged in a predetermined array and responsive to acoustic waves in an object field for developing signals corresponding to the intensities of the waves, means responsive to one of said signals for generating a reference signal selectively phased with respect to the oTher of said signals, means for sequentially scanning the other of said signals, means responsive to the scanned signals and to the reference signals for combining said signals to produce joint intensity signals and recording means, including a storage medium, for recording the joint intensity signals on the storage medium in a pattern corresponding to the array of sound intensity receptors.
Claim 3
Dependent Claim
65 words
A sonography system according to claim 1 further comprising acoustic wave transmitting means for scanning an object field with a scanning wave having a selected frequency and wherein the plurality of sound intensity receptors are arranged in a matrixlike array and are responsive to the acoustic waves reflected off objects in the scanned object for developing signals corresponding to the intensities of the reflected waves.
Claim 4
Dependent Claim
70 words
A sonography system according to claim 2 wherein the scanning means comprises a decoding network means including gate means operatively coupled to the sound intensity receptors and counter means for developing line scanning and sound intensity receptor scanning signals, the sound intensity receptor scanning signals having frequencies corresponding to the object field scanning wave frequency and supplying said signals to the decoding network means to sequentially enable the gate means.
Claim 5
Dependent Claim
47 words
A sonography system according to claim 3 wherein the reference signal generating means comprises variable phase shifter means responsive to the developed line scanning signals and to the one of said signals for supplying reference signals selectively phased with the signals sequentially transmitted by the gate means.
Claim 6
Dependent Claim
45 words
A sonography system according to claim 4 wherein the line scanning signals supplied to the variable phase shifter means causes the variable phase shifter means to vary the phase of the reference signal at a frequency corresponding to the frequency of the line scanning signals.
Claim 7
Dependent Claim
67 words
A sonography system according to claim 1 further comprising optical reconstruction means, the reconstruction means comprising means for directing a beam of coherent light onto the storage medium at an angle corresponding to the phase difference between the reference signals and the other of said signals to provide an image of the object field and light sensitive means responsive to the illuminated image for reproducing the image.
Claim 8
Dependent Claim
72 words
A sonography system according to claim 1 wherein the storage medium of the recording means comprises thermoplastic film and wherein the recording means comprises means for heating the thermoplastic film, electron beam assembly means responsive to the joint intensity signals for controlling the deflection of the electron beam produced by the assembly as it impinges the thermoplastic film, and means for cooling the film following the impingement thereon by the electron beam.
References Cited (Backward Citations)
US3461420A
Cited
US3467216A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |