System and method for a low rate, in-band broadcast communication for medical telemetry
First Claim
1. A medical telemetry system comprising:
- a central station comprising a central station receiver and a central station transmitter, the central station receiver and the central station transmitter operating on a predetermined frequency bandwidth having a plurality of frequency-multiplexed transmission channels and a plurality of guard bands, each of the plurality of frequency-multiplexed transmission channels being separated in frequency by one of the plurality of guard bands, the central station transmitter being configured for wirelessly receiving patient data from at least one of the plurality of frequency-multiplexed transmission channels, the central station transmitter being configured for wirelessly transmitting control data information via the plurality of guard bands; and
a patient monitor comprising a patient monitor receiver and a patient monitor transmitter operating on the predetermined frequency bandwidth, the patient monitor wirelessly connected to the central station, the patient monitor receiver being configured for wirelessly receiving the control data information from the central station transmitter via at least one of the plurality of guard bands, the patient monitor transmitter being configured for wirelessly transmitting the patient data to the central station receiver via at least one of the plurality of frequency-multiplexed transmission channels.
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Accused Products
Abstract
A medical telemetry system includes a central station having a central station receiver and a central station transmitter that both operate on a frequency bandwidth having frequency multiplexed transmission channels and guard bands. A guard band separates each of the frequency-multiplexed transmission channels. The central station receiver wirelessly receives patient data from one of the frequency-multiplexed transmission channels. The central station transmitter wirelessly transmits control data information via each of the guard bands. At least one patient monitor is provided that includes a patient monitor receiver and a patient monitor transmitter that both operate on the frequency bandwidth. The patient monitor is wirelessly connected to the central station. The patient monitor receiver is configured for wirelessly receiving the control data information from the central station transmitter via the guard bands. The patient monitor transmitter is configured for wirelessly transmitting the patient data to the central station receiver via one of the frequency multiplexed transmission channels.
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Citations
50 Claims
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1. A medical telemetry system comprising:
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a central station comprising a central station receiver and a central station transmitter, the central station receiver and the central station transmitter operating on a predetermined frequency bandwidth having a plurality of frequency-multiplexed transmission channels and a plurality of guard bands, each of the plurality of frequency-multiplexed transmission channels being separated in frequency by one of the plurality of guard bands, the central station transmitter being configured for wirelessly receiving patient data from at least one of the plurality of frequency-multiplexed transmission channels, the central station transmitter being configured for wirelessly transmitting control data information via the plurality of guard bands; and
a patient monitor comprising a patient monitor receiver and a patient monitor transmitter operating on the predetermined frequency bandwidth, the patient monitor wirelessly connected to the central station, the patient monitor receiver being configured for wirelessly receiving the control data information from the central station transmitter via at least one of the plurality of guard bands, the patient monitor transmitter being configured for wirelessly transmitting the patient data to the central station receiver via at least one of the plurality of frequency-multiplexed transmission channels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A medical telemetry system comprising:
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a central station comprising a central station receiver and a central station transmitter, the central station receiver and the central station transmitter operating on a predetermined frequency bandwidth having a plurality of frequency-multiplexed transmission channels and a plurality of guard bands, each of the plurality of frequency-multiplexed transmission channels being separated in frequency by one of the plurality of guard bands, the central station receiver bring is configured for wirelessly receiving patient data from at least one of the plurality of frequency-multiplexed transmission channels and the central station transmitter being configured for wirelessly transmitting control data information via at least one of the plurality of guard bands, the central station receiver comprising;
an antenna selector connected to each of a plurality of antennas for selecting an antenna;
a first IF mixer connected to the antenna for an IF mixer output;
a synthesizer connected to the IF mixer;
a bandpass filter connected to the IF mixer;
a baseband mixer connected to the IF mixer;
an analog to digital converter (ADC) connected to the bandpass filter;
a digital signal processor (DSP) connected to the ADC for generating a DSP output;
a digitally controlled synthesizer coupled to the ADC and DSP;
a second IF mixer connected to the digitally controlled synthesizer for combining the output from the digitally controlled synthesizer and a baseband signal;
a variable phase shifter connected to the second IF mixer and the DSP; and
a summer connected between the bandpass filter, baseband mixer and the variable phase shifter; and
a patient monitor comprising a patient monitor receiver and a patient monitor transmitter, the patient monitor receiver and the patient monitor transmitter operating on at least one of the plurality of frequency-multiplexed transmission channels, the patient monitor wirelessly connected to central station, the patient monitor receiver being configured for wirelessly receiving the control data from the central station transmitter via at least one of the plurality of guard bands and the central station transmitter being configured for wirelessly transmitting the patient data to the central station receiver via at least one of the plurality of frequency-multiplexed transmission channels. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A method of two-way communication in a medical telemetry system comprising the steps of:
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providing a central station transmitter in a central station for communicating to a plurality of individual patient monitors;
providing a patient monitor receiver in each of the plurality of individual patient monitors for communicating with the central station transmitter;
operating the central station transmitter and the patient monitor receiver on a predetermined frequency bandwidth having a plurality of frequency-multiplexed transmission channels and a plurality of guard bands, each of the plurality of frequency-multiplexed transmission channels being separated in frequency by one of the plurality of guard bands;
transmitting control data using the central station transmitter via the plurality of guard bands to each of the plurality of individual patient monitors; and
receiving the control data at the patient monitor receiver via the plurality of guard bands; and
processing the received control data at the patient monitor receiver. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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35. The method of 34, wherein the step of transmitting control data using the central station transmitter comprises using multi-carrier modulation (MCM).
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36. The method of 34, wherein the step of transmitting control data using the central station transmitter comprises sending a sequence of successive data frames, each frame comprising a set of fields.
- 37. The method of 36, wherein the step of processing the received control data further comprises demodulating a specific field of each frame and identifying the control data for a particular one of the plurality of individual patient monitors.
Specification