Patent ID: 6906533
Filing Date: 2005-06-14
Classification: A61B

Abstract:
1. A TV remote control unit comprising: a key operation section having a plurality of keys to be used for performing operations for setting a channel of a TV set and a mode; a transmission section for transmitting, to the TV set, an operation signal corresponding to key operation performed by way of the key operation section; a microcomputer which controls the key operation section and the transmission section and performs predetermined processing; a square waveform generation circuit for generating a square signal of predetermined frequency, a waveform shaping circuit for converting the square signal output from the square waveform generation circuit into a sinusoidal waveform signal; a pair of current application electrodes which constitute a closed circuit upon contact with the body of a person whose body fat is to be measured and causes an electric current stemming from a sinusoidal waveform signal output from the waveform shaping circuit to flow through the body of the person; a pair of voltage measurement electrodes for extracting a potential difference between the current application electrodes developing from the current flowing through the body of the person as a measurement voltage relevant to bio-impedance of the person; a d.c. detection circuit for subjecting the voltage extracted from the voltage measurement electrodes to d:c. detection; and an analog/digital conversion circuit for converting into a digital value a detection voltage having been subjected to d.c. detection by the d.c. detection circuit, wherein a substantial two-electrode type is established by connecting one of the pair of current application electrodes to one of the pair of voltage measurement electrodes and connecting the other electrode of the pair of current application electrodes to the other electrode of the pair of voltage measurement electrodes, wherein the microcomputer comprises: pacemaker checking means that displays check items to be used for determining whether or not the person has a pacemaker at the time of measurement of body fat of the person; body data setting means which sets body data required for measuring body fat of the person, including the person's weight, age, height, and gender, when the pacemaker check means determined that the person does not have a pacemaker and when the pacemaker is determined not to exist; and measurement means which, when the body of the person has been brought into contact with at least either the current application electrodes or the voltage measurement electrodes, takes a digital value obtained when a match has consecutively arisen between digital values a predetermined number of times within a predetermined sampling cycle as a result of measurement of bio-impedance required for computing body fat of the person, and wherein the result of measurement of the bio-impedance and the body data are transmitted to the TV set by way of the transmission section; body fat of the person is computed on the basis of the bio-impedance and body data received by the TV set; and the result of computation is displayed on a screen of the TV set.