US4044264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-ray diagnostic installation for radioscopy and exposures
Assignee: Siemens AG
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Filing: 1975-01-22
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Granted: 1977-08-23
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Expires: 1995-01-22
Abstract
Abstract An X-ray diagnostic installation employed for fluoroscopy and exposures, wherein the prevailing exposure voltage may be determined by a user. The output signal of a function generator controls an arrangement for indication of the prevailing exposure voltage. This indication may be effectuated by means of a digital recording arrangement. In an embodiment of the invention, a transmission arrangement between the output of the function generator and the input of a digital recording arrangement, may comprise a coding device for the output signals. Additionally, the installation also has a construction necessitating relatively low power requirements between the X-ray diagnostic apparatus and a remotely located control panel by providing a coding and decoding arrangement intermediate the coding device and the digital recording arrangement.
Inventors
- 👤 Herbert Lutz
- 👤 Rolf Pfeifer
- 👤 Hans Sausen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:49
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/44; A61B6/4476; H; H05; H05G; H05G1/00; H05G1/08; H05G1/26; H05G1/265; H05G1/30; H05G1/32
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
197 words
In an X-ray diagnostic installation for fluoroscopy and exposures including an x-ray tube and an X-ray image amplifier; an arrangement for regulating the dosage output of said tube during fluoroscopy; means for determining the tube's exposure voltage from the tube's fluoroscopic voltage; an automatic exposure timer; and a function generator receiving an input signal corresponding to the prevailing fluoroscopic voltage, said function generator generating an analog output signal from said input signal for controlling determining means for the exposure voltage, said function generator having a plurality of the exposure voltages programmed therein dependent upon the fluoroscopic voltage, the improvement comprising: means for digitizing said analog output signal and an arrangement including a digital indicator for remotely indicating the prevailing exposure voltage as a numerical value, said arrangement being controlled by the analog output of said function generator, said digitizing means including a plurality of output connectors corresponding to a predetermined number of exposure voltage increments, a binary signal being applied to respectively one said output connector characterizing a prevailing exposure voltage increment; a coding arrangement being connected to each said indicating arrangement for each digit, said coding arrangement being controlled by the signals in said output connectors.
Claim 2
Dependent Claim
197 words
In an X-ray diagnostic installation for fluoroscopy and exposures including an x-ray tube and an X-ray image amplifier; an arrangement for regulating the dosage output of said tube during fluoroscopy; means for determining the tube's exposure voltage from the tube's fluoroscopic voltage; an automatic exposure timer; and a function generator receiving an input signal corresponding to the prevailing fluoroscopic voltage, said function generator generating an analog output signal from said input signal for controlling determining means for the exposure voltage, said function generator having a plurality of the exposure voltages programmed therein dependent upon the fluoroscopic voltage, the improvement comprising: means for digitizing said analog output signal and an arrangement including a digital indicator for remotely indicating the prevailing exposure voltage as a numerical value, said arrangement being controlled by the analog output of said function generator, said digitizing means including a plurality of output connectors corresponding to a predetermined number of exposure voltage increments, a binary signal being applied to respectively one said output connector characterizing a prevailing exposure voltage increment; a coding arrangement being connected to each said indicating arrangement for each digit, said coding arrangement being controlled by the signals in said output connectors.
Claim 3
Dependent Claim
62 words
An X-ray diagnostic installation as claimed in claim 1, comprising a coding and decoding installation connected between the output of said digitizing means and the input of said coding arrangement, said coding and decoding installation converting the output signals of said digitizing means into BCD-code signals and reconverting said code signals into signals corresponding to the output signals of said digitizing means.
References Cited (Backward Citations)
US3546461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-22 | 1981-02-21 | 1981-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-22 | 1985-02-21 | 1985-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-22 | 1989-02-21 | 1989-08-23 | $7700.00 | Window Closed / Lapsed |