A data acquisition device includes an integrated circuit and an information processor. The integrated circuit has a first terminal for receiving a master/slave switching signal upon start of data acquisition, an ADC for converting analog input data to digital data, and an output terminal for outputting the digital data. The information processor generates the master/slave switching signal, and has a second terminal connected to the first terminal and for outputting the master/slave switching signal, and an input terminal connected to the output terminal and for receiving the digital data. The information processor operates in the master mode when the integrated circuit operates in the slave mode. The information processor operates in the slave when the integrated circuit operates in the master mode. The integrated circuit outputs the digital data when operating in the master mode according to the master/slave switching signal.

A neural recording probe and interface, along with a method of assembly, with the neural recording probe being minimally invasive and having high-density, multi-channel microelectrodes. In one example, the neural probe includes a plurality of bumps projecting from a bottom surface of a terminal body. Each bump is electrically connected to a corresponding one of a plurality of electrodes. The plurality of bumps is bonded to a respective one of a plurality of area pads of the integrated circuit with an anisotropic conductive film such that each of the plurality of electrodes of the neural probe is electrically connected to a respective one of the active circuits of the integrated circuit.

A neural recording probe and interface, along with a method of assembly, with the neural recording probe being minimally invasive and having high-density, multi-channel microelectrodes. In one example, the neural probe includes a plurality of bumps projecting from a bottom surface of a terminal body. Each bump is electrically connected to a corresponding one of a plurality of electrodes. The plurality of bumps is bonded to a respective one of a plurality of area pads of the integrated circuit with an anisotropic conductive film such that each of the plurality of electrodes of the neural probe is electrically connected to a respective one of the active circuits of the integrated circuit.

In a system for measuring biopotential signals generated by the physiological activity of a subject, it is necessary to monitor the measured biopotentials against a reliable reference. An apparatus and method of deriving a reference suitable for use in referencing and grounding of the subject are described.

Methods and systems are provided for selectively increasing an electrode count in a bio signal monitoring system via an extension connector. In an example, a bio signal monitoring system may comprise an integrated electrode coupler configured to be selectively connected to one or more removable electrodes via one or more corresponding extension cables. In this way, electrodes may be added or removed from the bio signal monitoring system based on a monitoring process selected.

A signal measurement apparatus and signal measurement method are provided. The signal measurement apparatus includes an amplifier configured to receive a differential voltage signal, amplify the received differential voltage signal, and output the amplified differential voltage signal, a controller configured to output a control signal to control a switching circuit in response to a signal value of the amplified differential voltage signal satisfying a condition, and wherein the switching circuit is configured to change connections between input terminals of the amplifier and paths along which the differential voltage signal is transmitted, based on the control signal.

A signal measurement apparatus and signal measurement method are provided. The signal measurement apparatus includes an amplifier configured to receive a differential voltage signal, amplify the received differential voltage signal, and output the amplified differential voltage signal, a controller configured to output a control signal to control a switching circuit in response to a signal value of the amplified differential voltage signal satisfying a condition, and wherein the switching circuit is configured to change connections between input terminals of the amplifier and paths along which the differential voltage signal is transmitted, based on the control signal.

A signal processing apparatus includes an input voltage selector configured to select an input voltage from a plurality of input voltages; an input element connected to the input voltage selector; and an input current controller configured to control an inflow of an input current in conjunction with an operation of the input voltage selector.

A signal processing apparatus includes an input voltage selector configured to select an input voltage from a plurality of input voltages; an input element connected to the input voltage selector; and an input current controller configured to control an inflow of an input current in conjunction with an operation of the input voltage selector.

An electrocardiogram (ECG) extension cable includes a first connector configured to be electrically coupled to a physiological monitoring device; a second connector configured to be electrically coupled to an ECG lead set including a processor; an input/output (I/O) wire configured to transmit data between the physiological monitoring device and the processor; a ground wire that establishes a ground path between the first connector and the second connector; a series protection element coupled in series along the ground wire; a bypass path coupled to the ground wire in parallel to the series protection element; and a switching element arranged along the bypass path and configured to redirect the ground path along the bypass path, thereby bypassing the series protection element.