US3864660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrascope
Assignee: Rohe & 0 Scient Corp
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Filing: 1973-09-10
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Granted: 1975-02-04
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Expires: 1993-09-10
Abstract
Abstract An improved ultrasonic system of the pulse-echo type for medical diagnosis and the like. An ultrasonic system with transmitter, ultrasonic transducer, receiver and display unit, with a scan converter in the display unit for picture storage and readout by conventional TV sweep patterns and presentation on a conventional TV monitor. A write-read selection system providing a write mode with a high rate of data entry, such as more than one thousand ultrasonic pulses per second with present day 525 line 60 hertz TV displays.
Inventors
- 👤 Ralph Ranalli
- 👤 Kenneth R Torrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:52
CPC Classifications
A; A61; A61B; A61B8/00; A61B8/42; A61B8/4209; A61B8/4218; G; G01; G01S; G01S7/00; G01S7/52; G01S7/52017; G01S7/52023; G01S7/52044
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
106 words
An ultrasonic system having transmitter, ultrasonic transducer, receiver and display unit, said display unit including a display screen with a sweep pattern and a scan converter with mode selection means for selecting separate write and read modes for the converter; timing means for determining write mode periods and read mode periods each of a duration a portion of the sweep pattern duration; means for synchronizing said timing means with said sweep pattern; and means for controlling said mode selection means as a function of said timing means providing write and read modes at separate times in said scan converter corresponding to said write and read periods.
Claim 2
Dependent Claim
106 words
An ultrasonic system having transmitter, ultrasonic transducer, receiver and display unit, said display unit including a display screen with a sweep pattern and a scan converter with mode selection means for selecting separate write and read modes for the converter; timing means for determining write mode periods and read mode periods each of a duration a portion of the sweep pattern duration; means for synchronizing said timing means with said sweep pattern; and means for controlling said mode selection means as a function of said timing means providing write and read modes at separate times in said scan converter corresponding to said write and read periods.
Claim 3
Dependent Claim
132 words
In an ultrasonic system having transmitter, ultrasonic transducer, receiver and display unit, the display unit including a scan converter with means providing horizontal and vertical blanking signals and mode selection means for selecting write and read modes of operation, including in combination: counter means; switch means switching between write and read states providing write and read signals in response to input signals from said counter means; means connecting said horziontal blanking signals to said counter means as an input, with said counter means providing an output to said switch means on counting a predetermined number of horizontal blanking signals; and means connecting said switch means to said scan converter mode selection means for changing the scan converter mode from write to read to write corresponding to the state of said switch means.
Claim 4
Dependent Claim
132 words
In an ultrasonic system having transmitter, ultrasonic transducer, receiver and display unit, the display unit including a scan converter with means providing horizontal and vertical blanking signals and mode selection means for selecting write and read modes of operation, including in combination: counter means; switch means switching between write and read states providing write and read signals in response to input signals from said counter means; means connecting said horziontal blanking signals to said counter means as an input, with said counter means providing an output to said switch means on counting a predetermined number of horizontal blanking signals; and means connecting said switch means to said scan converter mode selection means for changing the scan converter mode from write to read to write corresponding to the state of said switch means.
Claim 5
Dependent Claim
41 words
An ultrasonic system as defined in claim 2 wherein said counter means includes means for resetting to a zero count state on receiving a reset signal, and including means connecting said vertical blanking signals to said counter means as reset signals.
Claim 6
Dependent Claim
41 words
An ultrasonic system as defined in claim 3 wherein said display unit includes means providing first and second fields in each frame, and wherein said predetermined number of said counter provides an odd number of switch means state changes per field.
References Cited (Backward Citations)
US3218637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |