The present invention relates generally to transmission lines and specifically to textile transmission line assemblies. The textile transmission line assemblies are capable of lateral bending, axial rotation, and stretching without suffering from a statistically significant loss of its performance characteristics. Antenna elements are incorporated with the textile transmission line assemblies (hereinafter “combination assemblies”). The textile transmission line assemblies can be incorporated in to garments, apparel items, bags, tents, or other textile-based objects. The textile transmission line assemblies are configured to be flexibly affixed to textile items. The textile transmission line assemblies are impact resistant. Wearable communications systems that incorporate at least one textile transmission line assembly and/or combination assembly are also disclosed.

In some embodiments, a system including a tool drill string having a downhole device is disclosed. The downhole device includes a memory storing instructions and a downhole processor configured to execute the instructions to operate in a first transmission mode by default. The downhole processor is communicatively coupled to an uphole processor via the first transmission mode. The downhole processor is further to transmit, via a second transmission mode, a message to the uphole processor, determine whether a response is received, via the second transmission mode, from the uphole processor, and responsive to determining the response is received from the uphole processor, switch from the first transmission mode to the second transmission mode.

A wireless sensor device capable of constant operation without replacement of batteries. The wireless sensor device is equipped with a rechargeable battery and the battery is recharged wirelessly. Radio waves received at an antenna circuit are converted into electrical energy and stored in the battery. A sensor circuit operates with the electrical energy stored in the battery, and acquires information. Then, a signal containing the information acquired is converted into radio waves at the antenna circuit, whereby the information can be read out wirelessly.

The present disclosure includes ingestible devices. In some examples, an ingestible device is presented that includes a framework, a control device secured to the framework, and a partial power source. The partial power source may include a first digestible material secured to the framework and electrically coupled to the control device, and a second digestible material electrically isolated from and dissimilar to the first digestible material, electrically coupled to the control device, and secured to the framework. The partial power source may be configured to provide power to the control device when the first and second digestible materials come in contact with a conductive fluid. The control device, after being provided power by the first and second digestible materials, may be configured to alter conductance between the first and second digestible materials to produce a current signature through the conductive fluid that is detectable by a receiver.

A method for recognising a user whose body is capable of re-transmitting an electromagnetic signal in the form of an electromagnetic wave. The method is implemented on a transceiver device and includes the following steps on the device: transmitting an electromagnetic pulse signal; obtaining a re-transmitted signal when the user is in the vicinity of the device, the signal depending on the transmitted pulse signal; comparing the re-transmitted signal with at least one reference signal of the user; and recognising the user if the re-transmitted signal is close to the reference signal.

Systems, methods, and computer-readable media are disclosed for secured intrabody networks and interfaces for IoT and ultrasound wideband. Example devices may include a wearable device in contact with a surface of a human body, the wearable device including an ultrasonic wave generator configured to transmit ultrasonic waves, and an external receiver configured to receive the ultrasonic waves and determine data encoded in the ultrasonic waves. The ultrasonic waves may encode a single bit of data in multiple pulses through a pseudorandom time hopping scheme.

A transmitter for a magnetic body area network includes a power oscillator that directly uses a body coil as a resonant element. Shunt transistor circuitry is between the power oscillator and the body coil, the shunt transistor circuitry selectively shunts current from the body coil in response to a data signal provided to the transmitter. Power injection circuitry is synchronized to the power oscillator to selectively inject power into the body coil in response to the data signal. A tuning capacitor array is disposed to tune frequency in the body coil. A frequency-locked-loop responds to a frequency in the body coil and tunes the tuning capacitor array to lock to a carrier frequency. Very high Q coils can be used while achieving high data transmission rates of 5 mbps to 10 mbps. Transmitters and methods are applicable to on-off-key modulation, frequency-shift modulation and amplitude-shift modulation.

According to various, but not necessarily all, embodiments there is provided an apparatus comprising means for: obtaining a propagation profile for wireless signals transmitted between at least two devices via a creeping wave along a user's skin; causing transmission of electromagnetic radiation towards a plurality of locations on a target user's body to obtain dielectric properties of their skin at the plurality of locations based on an amount of the electromagnetic radiation reflected from each location; determining whether the propagation profile correlates with a realizable creeping wave along the target user's skin, the realizability being based on the obtained dielectric properties of their skin; and forming an association between the target user and the at least two devices based on a strength of correlation between the propagation profile and a realizable creeping wave.

Provided is and electrode selection device communicating with a capsule endoscope. The device includes an analog front end configured to recover first data based on first signals transmitted from the capsule endoscope to a first electrode and a second electrode, recover second data based on second signals transmitted from the capsule endoscope to the first electrode and a third electrode, and recover third data based on third signals transmitted from the capsule endoscope to the second electrode and the third electrode, and a digital receiver configured to calculate a first correlation value between the first and second electrodes, a second correlation value between the first and third electrodes, and a third correlation value between the second and third electrodes based on the first to third data. The digital receiver calculates first to third correlation sums, and selects a receiving electrode pair based on the first to third correlation sums.

A method for telemetering data from a Remote Data Source (RDS) in a Bottom Hole Assembly (BHA) for subterranean drilling. The BHA has a Bottom Mounted Mud Pulser (BMMP), a Main Processing Unit (MPU) and an acoustic sensor uphole from the BMMP, and an RDS downhole from the BMMP. The method includes encoding RDS data into a first encoded data signal; translating the first encoded data signal into an acoustic data signal; causing the acoustic data signal to follow an acoustic pathway at least partially uphole to the acoustic sensor; causing the acoustic sensor to translate the acoustic data signal into a second encoded data signal; causing the MPU to decode the second encoded data signal into RDS data and send said decoded RDS data to the BMMP; and causing the BMMP to telemeter RDS data received from the MPU in at least an uphole direction.