로그인시 본인확인과정이 필요할 수 있습니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기
| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0765475 (1991-09-25) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 345 인용 특허 : 0 |
A method and apparatus are disclosed for telemetering both analog and digital data from an implantable medical device to an external receiver, such as between an implanted cardiac pacer and its external programming equipment. Analog data is first converted to digital format by an analog-to-digital c
A method and apparatus are disclosed for telemetering both analog and digital data from an implantable medical device to an external receiver, such as between an implanted cardiac pacer and its external programming equipment. Analog data is first converted to digital format by an analog-to-digital converter, such that the transmission is digital data. A damped carrier at 175 kilohertz is pulse position modulated by the data. The modulation scheme defines a frame of slightly less than 2 milliseconds. The frame is divided into 64 individual time periods using a crystal clock. The data, along with synchronization and identification codes, are positioned into predefined ranges within each frame as measured by the individual time periods. The data is uniquely identified by the position of a burst of the carrier within the predetermined range. This modulation scheme enables necessary data to be transmitted at sufficiently high rates with reduced power requirements thereby conserving the internal battery of the implantable device. This modulation scheme provides flexibility of use, for example, with complex medical devices where transmission of increased volumes of data is desirable, such as cardiac devices having dual-chamber or multisensor capabilities, and for controlling particular conditions, such as tachyarrhythmia.
A method for transmitting information encoded telemetry signals percutaneously between a medical device implanted within a human body and an external device, comprising the steps of: (a) formating the telemetry signal to be transmitted by establishing a frame having a predetermined time interval and
A method for transmitting information encoded telemetry signals percutaneously between a medical device implanted within a human body and an external device, comprising the steps of: (a) formating the telemetry signal to be transmitted by establishing a frame having a predetermined time interval and at least first, second and third interval ranges within said frame, each range comprising a set of available pulse positions; (b) encoding said formatted telemetry signal by: (1) placing a synchronizing signal at a predetermined pulse position within said first interval range within said frame; (2) placing a frame identifier signal at a preselected pulse position within said second interval range within said frame, which pulse position signifies the type of information being transmitted; (3) placing a data bit signal at a preselected pulse position within said third interval range within said frame, which pulse position signifies the value of the data bit signal being transmitted; and (c) transmitting said formatted and encoded telemetry signal between said implanted medical device and said external device.
Copyright KISTI. All Rights Reserved.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.