최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0768207 (2001-01-22) |
발명자 / 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 | 피인용 횟수 : 701 인용 특허 : 10 |
An implanted medical device (e.g. infusion pump) and handheld communication device communicate with one another via telemetry wherein transmitted messages have enhanced numbers of and/or regularity of bit transitions to minimize the risk of synchronization loss between transmitted bits of data and r
An implanted medical device (e.g. infusion pump) and handheld communication device communicate with one another via telemetry wherein transmitted messages have enhanced numbers of and/or regularity of bit transitions to minimize the risk of synchronization loss between transmitted bits of data and received bits of data. Bit transitions for portions of messages may be enhanced by applying a pseudo-randomization scheme to those portions of messages that are transmitted in a way that allows the receiver to extract the original data from the received randomized data. Preferred randomization techniques modify (i.e. randomize) the data using a CRC value that is being accumulated while simultaneously causing the modified data to modify subsequent accumulation of the CRC itself. Upon reception, the reversal of data randomization occurs so that the intended message is appropriately received.
An implanted medical device (e.g. infusion pump) and handheld communication device communicate with one another via telemetry wherein transmitted messages have enhanced numbers of and/or regularity of bit transitions to minimize the risk of synchronization loss between transmitted bits of data and r
An implanted medical device (e.g. infusion pump) and handheld communication device communicate with one another via telemetry wherein transmitted messages have enhanced numbers of and/or regularity of bit transitions to minimize the risk of synchronization loss between transmitted bits of data and received bits of data. Bit transitions for portions of messages may be enhanced by applying a pseudo-randomization scheme to those portions of messages that are transmitted in a way that allows the receiver to extract the original data from the received randomized data. Preferred randomization techniques modify (i.e. randomize) the data using a CRC value that is being accumulated while simultaneously causing the modified data to modify subsequent accumulation of the CRC itself. Upon reception, the reversal of data randomization occurs so that the intended message is appropriately received. fabricated from simple monomode fibre. rotating x-ray system comprising: an inverter operative at a switching frequency for converting an input voltage applied to the inverter into an output AC voltage, a voltage cascade coupled to said inverter operating at a resonance current, the resonance current being dependent on the switching frequency, and a control circuit coupled to the inverter, the control circuit generating the switching frequency such that a desired resonance current is imposed in the voltage cascade. 2. The power supply according to claim 1 further comprising a capacitor interposed between the inverter and the voltage cascade. 3. A power supply as claimed in claim 1 wherein the power supply is mounted on a rotating portion of the rotating x-ray system. 4. A tank generator with an X-ray source and an X-ray generator, wherein the tank generator includes a power supply as claimed in claim 1. 5. A power supply as claimed in claim 1, wherein the control circuit is configured such that at least one of the frequency and the pulse duty factor of the switching voltage is adjustable in order to change the output DC voltage and the output current. 6. A power supply as claimed in claim 1, further comprising a transformer operatively coupled between the inverter and the voltage cascade, whose stray inductance forms a resonant circuit in conjunction with the capacitance of the voltage cascade. 7. A power supply as claimed in claim 6, wherein the transformer is constructed by means of the planar technique as inductances in the form of tracks printed on a circuit board. 8. An X-ray generator provided with a power supply as claimed in claim 7. 9. An X-ray system which includes an X-ray source and an X-ray generator as claimed in claim 8, wherein the x-ray system is intended notably for mobile or surgical applications. 10. An X-ray system as claimed in claim 9, wherein the x-ray system includes a computed tomography apparatus. 11. The power supply according to claim 6 further comprising a capacitor interposed between the inverter and the transformer. 12. A power supply for a rotating x-ray system, comprising: at least two voltage cascades; at least two inverters each operatively coupled to at least one of the voltage cascades and arranged to convert an input voltage applied to the inverter into an output AC voltage; at least two transformers each operatively coupled between one of the inverters and one of the voltage cascades; and a control circuit operatively coupled to the inverters, the control circuit generating switching voltages, the inverters being responsive to the switching voltages and being driven at a switching frequency such that a resonance current is imposed in the voltage cascade and such that the AC voltages generated by the inverters exhibit a phase shift relative to one another. 13. A power supply for a rotating x-ray system, comprising: three voltage cascades; three inverters each operatively coupled to at least one of the voltage cascades and arranged to convert an input voltage applied to the inverter into an output AC voltage; three transformers each operatively coupled between one of the inverters and one of the voltage cascades; and a control circuit operatively coupled to the inverters, the control circuit generating switching voltages, the inverters being responsive to the switching voltages and being driven at a switching frequency such that a resonance current is imposed in the voltage cascade and with a phase shift of approximately 120 degrees. onditions when an inductive load is short-circuited. The protective circuit uses a capacitive component to absorb charge during a short circuit to protect non-conducting switching devices from an overvoltage condition. f said insulating member is in contact with the other of said surfaces. 9. An injector having a built-in piezoelectric device as a driving source, wherein said piezoelectric device has a metal case outside the side surfaces thereof, an insulating member having an electric insulation property is disposed between the surfaces of said piezoelectric device and an inner surface of said case, said insulating member is bonded to either one of the side surfaces of said piezoelectric device and the inner surface of said case, at least a part of said insulating member is in contact with the other of said surfaces, and said case directly or indirectly comes into contact with a cooling fluid inside said injector. 10. An injector according to claim 9, wherein said cooling fluid is a fuel as an object of injection of said injector. 11. A method of producing a stacked-type piezoelectric device to be built in an injector, comprising the steps of: covering the outside of side surfaces of said piezoelectric device with an insulating member, and bonding said insulating member and the side surfaces of said piezoelectric device; and inserting said piezoelectric device covered with said insulating member into a metal case. 12. A method of producing a stacked-type piezoelectric device to be built in an injector, comprising the steps of: covering an inner surface of a metal case with an insulating member, and bonding said insulating member and the inner surface of said case; and inserting said piezoelectric device into said case covered with said insulating member. 13. A stacked-type piezoelectric device for an injector, to be built into the injector, including a metal case outside side surfaces of said piezoelectric device, wherein an insulating member having an electric resistivity of at least 1010(Ω·m) is interposed between the side surfaces of said piezoelectric device and an inner surface of said case and one surface of the insulating member is bonded to either the side surfaces of said piezoelectric device or the inner surface of said case, and at least a part of the other surface of said insulating member is in contact with said side surfaces or said inner surface, wherein said insulating member and said piezoelectric device or said case is bonded over at least 90% of their boundary area on the surface where said insulating member and said piezoelectric device or said case are bonded, and keep contact by not greater than 30% of their boundary area on the other contact surface where said insulating member and said piezoelectric device or said case are in contact. ation in the ceramic layers stacked at a central portion of the multilayer ceramic body is higher than that in the remaining ceramic layers of the multilayer ceramic body.
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