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-0391080 (1989-08-08) |
발명자 / 주소 |
|
출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 678 인용 특허 : 3 |
A high speed digital telemetry system (10) includes a transmitter (12) and a receiver (14), at least one of which is adapted for use in an implantable device. The transmitter includes a data encoder (14), modulator (16), transmitting coil (20), and transmitting coil drive circuit (18). The data enco
A high speed digital telemetry system (10) includes a transmitter (12) and a receiver (14), at least one of which is adapted for use in an implantable device. The transmitter includes a data encoder (14), modulator (16), transmitting coil (20), and transmitting coil drive circuit (18). The data encoder examines prescribed incoming data bits and prior encoded data bits, generating an encoded data stream (36) that includes a data transition only when a prescribed correlation is noted amongst the examined bits. The modulator modulates a carrier signal (34) with the encoded data stream, causing a phase reversal of the carrier at each data transition of the encoded data stream. The transmitting coil drive circuit applies the modulated carrier (38) to the transmitting coil. The receiver includes a receiving coil (22) and associated amplifier (24) and bandpass filter (26) for detecting the transmitted modulated carrier. The bandpass filter is centered at the frequency of the carrier, passing the carrier only when no phase reversals are present. This results in an on-off signal at the frequency of the carrier. An AM detector (28) detects when the signal is present and when it is not, and appropriate decision logic (30) applies a suitable acceptance criteria to the detected signal to define the received binary data.
Implantable transmitter apparatus for transmitting digital binary data at a prescribed bit rate from an implantable device, said digital binary data comprising a sequence of incoming data bits, said transmitter comprising: encoding means for converting said sequence of incoming data bits into an enc
Implantable transmitter apparatus for transmitting digital binary data at a prescribed bit rate from an implantable device, said digital binary data comprising a sequence of incoming data bits, said transmitter comprising: encoding means for converting said sequence of incoming data bits into an encoded binary data stream, comprising a sequence of encoded data bits, that includes an identifying mark only when a prescribed correlation exists between prescribed ones of said incoming data bits and encoded data bits; a transmitting coil circuit tuned to said prescribed bit rate; and means for applying a carrier signal having frequency equal to said prescribed bit rate to said transmitting coil circuit, including switching means for switching the phase of the carrier signal applied to said transmitting coil circuit by a prescribed amount for each identifying mark of said encoded binary data stream.
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