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US 2017/0303858 A1Published application
Handheld biometric sensor for mobile devices
AssigneeSensifree Ltd.
InventorsIlan Saul BARAK, Eran AGMON
Life of this patent
Estimating the term…
Abstract
A system and method comprises structure for receiving in a handheld device biometric or environmental data from the vicinity of the handheld device. The system may include a handheld mobile device such as a cellular telephone, or that device and a separate mechanical housing configured be held in a hand of a user and to clamp to or contain the handheld device. The system may include a specialized radar unit and be designed to analyze radar signals to provide a signal indicative of time varying arterial blood pressure. The mechanical housing may include a receiver designed to receive a biometric or environmental signal and to wirelessly transmit a corresponding signal to the handheld device when clamped to the handheld device.
Claims20
A system for determining arterial blood pressure of a user as a function of time, comprising:
- a handheld structure comprising at least one of:
- (1) a handheld device configured to be held in one hand of a person comprising a cellular telephone transceiver and human interface;
- and (2) a handheld mechanical housing configured to be held in one hand of the person, and designed to removably mechanically attach or clamp onto a handheld device;
- a frequency controlled oscillator to generate Radio Frequency (RF) signals;
- at least one antenna configured to transmit the RF signals generated by the frequency controlled oscillator and configured to receive RF signals which are reflections of the transmitted RF signals;
- a mixer configured to mix at least one of the transmitted RF signals with at least one of the reflected RF signals to generate a modified signal;
- an analog-to-digital converter configured to convert the modified signal into digital data thereby providing a digital representation of said modified signal;
- at least one processor for processing digital data;
- wherein said handheld structure contains said frequency controlled oscillator;
- said at least one antenna;
- and said mixer;
- said analog-to-digital converter, and said at least one processor;
- and
- wherein said system is configured to use said digital representation of said modified signal and a model relating said modified signal to arterial blood pressure, to generate an arterial blood pressure signal indicating arterial blood pressure of the user as a function of time;
- said at least one antenna defines a slot;
- a feed line in the form of a conductive layer coupling said the RF signals generated by the frequency controlled oscillator to said antenna;
- wherein said frequency controlled oscillator is controlled to generate said Radio Frequency (RF) signals in pulses at a repetition rate, and said repetition rate is sufficiently above the heart rate to provide reflection signal data points allowing curve fitting the reflection signal data to form a useful approximation for periodic variations in artery diameter at the periodicity of the heart rate
- wherein said frequency controlled oscillator is controlled to generate said Radio Frequency (RF) signals in a frequency range between 3.1 and 10.6 GHz and with a subband of bandwidth of at least 500 MHz;
- wherein said RF signals generated by the frequency controlled oscillator have peak power between 1 uW and 100 mW peak, and average power between 1 uW (microWatt) and 10 mW (milliWatt);
- and
- a battery, wherein said battery provides power to said frequency controlled oscillator.
18 more elements
A system for determining arterial blood pressure of a user as a function of time, comprising:
- a handheld structure comprising at least one of:
- (1) a handheld device configured to be held in one hand of a person comprising a cellular telephone transceiver and human interface;
- and (2) a handheld mechanical housing configured to be held in one hand of the person, and designed to removably mechanically attach or clamp onto a handheld device;
- a frequency controlled oscillator to generate Radio Frequency (RF) signals;
- at least one antenna configured to transmit the RF signals generated by the frequency controlled oscillator and configured to receive RF signals which are reflections of the transmitted RF signals;
- a mixer configured to mix at least one of the transmitted RF signals with at least one of the reflected RF signals to generate a modified signal;
- an analog-to-digital converter configured to convert the modified signal into digital data thereby providing a digital representation of said modified signal;
- at least one processor for processing digital data;
- wherein said handheld structure contains said frequency controlled oscillator, said at least one antenna;
- and said mixer;
- said analog-to-digital converter, and said at least one processor;
- and
- wherein said system is configured to use said digital representation of said modified signal and a model relating said modified signal to arterial blood pressure, to generate an arterial blood pressure signal indicating arterial blood pressure of the user as a function of time;
- and
- wherein said at least one antenna comprises a first antenna and a second antenna, said first antenna is located in said handheld structure relative to an artery in a left hand of the user so that it senses arterial diameter when said system is held in the left hand of said user, and said second antenna is located in said handheld structure relative to an artery in a right hand of the user so that it senses arterial diameter when said system is held in the right hand of said user.
12 more elements
A method for determining arterial blood pressure of a user as a function of time, comprising:
- powering with a battery, a handheld structure comprising at least one of:
- (1) a handheld device configured to be held in one hand of a person comprising a cellular telephone transceiver and human interface;
- and (2) a handheld mechanical housing configured to be held in one hand of the person, and designed to removably mechanically clamp or latch onto a handheld device;
- a frequency controlled oscillator to generate RF signals;
- at least one antenna configured to transmit the RF signals generated by the frequency controlled oscillator and configured to receive RF signals which are reflections of the transmitted RF signals;
- a mixer configured to mix at least one of the transmitted RF signals with at least one of the reflected RF signals to generate a modified signal;
- an analog-to-digital converter configured to convert the modified signal into digital data thereby providing a digital representation of said modified signal;
- at least one processor for processing digital data;
- wherein said handheld structure contains said frequency controlled oscillator;
- said at least one antenna;
- and said mixer, said analog-to-digital converter;
- and said at least one processor;
- and
- using said digital representation of said modified signal and a model relating said modified signal to arterial blood pressure, to generate an arterial blood pressure signal indicating arterial blood pressure of the user as a function of time;
- wherein said at least one antenna defines a slot;
- coupling said the RF signals generated by the frequency controlled oscillator to said antenna via a feed line in the form of a conductive layer,
- controlling said frequency controlled oscillator to generate said RF signals in pulses at a repetition rate, and said repetition rate is sufficiently above the heart rate to provide reflection signal data points allowing curve fitting the reflection signal data to form a useful approximation for periodic variations in artery diameter at the periodicity of the heart rate
- controlling said frequency controlled oscillator to generate said RF signals in a frequency range between 3.1 and 10.6 GHz and with a subband of bandwidth of at least 500 MHz;
- wherein said RF signals generated by the frequency controlled oscillator have peak power between 1 uW and 100 mW peak, and average power between 1 uW (microWatt) and 10 mW (milliWatt);
- and
- wherein said battery provides power to said frequency controlled oscillator.
18 more elements
A system for determining arterial blood pressure of a user as a function of time, comprising:
- a handheld structure comprising at least one of:
- (1) a handheld device configured to be held in one hand of a person comprising a cellular telephone transceiver and human interface;
- and (2) a handheld mechanical housing configured to be held in one hand of the person, and designed to removably mechanically attach or clamp onto a handheld device;
- a frequency controlled oscillator to generate Radio Frequency (RF) signals;
- at least one antenna configured to transmit the RF signals generated by the frequency controlled oscillator and configured to receive RF signals which are reflections of the transmitted RF signals;
- a mixer configured to mix at least one of the transmitted RF signals with at least one of the reflected RF signals to generate a modified signal;
- an analog-to-digital converter configured to convert the modified signal into digital data thereby providing a digital representation of said modified signal;
- at least one processor for processing digital data;
- and
- wherein said at least one antenna comprises a first antenna and a second antenna, said first antenna is located in said handheld structure relative to an artery in a left hand of the user so that it senses arterial diameter when said system is held in the left hand of said user, and said second antenna is located in said handheld structure relative to an artery in a right hand of the user so that it senses arterial diameter when said system is held in the right hand of said user.
7 more elements
Dependencies are inferred from the claim text.