BIO-STIMULATING AND BIO-SIGNAL MEASURING CIRCUIT
First Claim
1. A circuit for measuring a bio-stimulating signal and a bio-signal, the circuit comprising:
- a bio-stimulating signal generating circuit configured to generate a bio-stimulating signal in a bio-stimulating mode;
a bio-signal electrode configured to deliver the bio-stimulating signal generated in the bio-stimulating mode and receive a bio-signal in a bio-signal measuring mode;
a switch block configured to be turned on in a case where a voltage of the bio-stimulating signal is greater than a first reference voltage or lower than a second reference voltage;
first and second serially connected resistors configured to be connected between the bio-signal electrode and the switch block and divide a voltage of a signal of the bio-signal electrode according to whether the switch block is turned on; and
a bio-signal measuring circuit configured to measure voltage signal divided by the first and second resistors or measure a signal of the bio-signal electrode, according to whether the switch block is turned on,wherein the first reference voltage is greater than the second reference voltage.
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Accused Products
Abstract
The circuit may include bio-stimulating signal generating circuit which generates a bio-stimulating signal in a bio-stimulating mode, a bio-signal electrode which delivers the bio-stimulating signal generated in the bio-stimulating mode and receives a bio-signal in a bio-signal measuring mode, a switch block which is turned on when a voltage of the bio-stimulating signal is greater than a first reference voltage which is greater than a second reference voltage or lower than the second reference voltage, first and second resistors, and a bio-signal measuring circuit which measures voltage signals divided by the first and second resistors or measures a signal of the bio-signal electrode according to whether the switch block is turned on. The first and second resistors may be serially connected between the bio-signal electrode and the switch block, and divide a voltage of a signal of the bio-signal electrode when the switch block is turned on.
11 Citations
13 Claims
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1. A circuit for measuring a bio-stimulating signal and a bio-signal, the circuit comprising:
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a bio-stimulating signal generating circuit configured to generate a bio-stimulating signal in a bio-stimulating mode; a bio-signal electrode configured to deliver the bio-stimulating signal generated in the bio-stimulating mode and receive a bio-signal in a bio-signal measuring mode; a switch block configured to be turned on in a case where a voltage of the bio-stimulating signal is greater than a first reference voltage or lower than a second reference voltage; first and second serially connected resistors configured to be connected between the bio-signal electrode and the switch block and divide a voltage of a signal of the bio-signal electrode according to whether the switch block is turned on; and a bio-signal measuring circuit configured to measure voltage signal divided by the first and second resistors or measure a signal of the bio-signal electrode, according to whether the switch block is turned on, wherein the first reference voltage is greater than the second reference voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A circuit for measuring a bio-stimulating signal and a bio-signal, the circuit comprising:
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a bio-stimulating signal generating circuit configured to generate a bio-stimulating signal in a bio-stimulating mode; first and second bio-signal electrodes configured to output the bio-stimulating signal generated in the bio-stimulating mode and receive a bio-signal in a bio-signal measuring mode; a multiplexer configured to select at least one of the first and second bio-signal electrodes by a control signal and connect the selected bio-signal electrode to the bio-stimulating signal generating circuit; a connection node configured to allow the bio-stimulating signal generating circuit and the multiplexer to be connected thereto; a switch block configured to be turned on in a case where a voltage of the bio-stimulating signal is greater than a first reference voltage or lower than a second reference voltage; first and second serially connected resistors configured to be connected between the connection node and the switch block and divide a voltage of a signal of the selected bio-signal electrode according to whether the switch block is turned on; and a bio-signal measuring circuit configured to measure voltage signals divided by the first and second resistors or measure a signal of the selected bio-signal electrode, according to whether the switch block is turned on, wherein the first reference voltage is greater than the second reference voltage. - View Dependent Claims (10, 11, 12, 13)
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Specification