Abstract: There is provided a pulse wave detector enabling pulse wave detection with reduced power consumption, and prolonged usage time. Ultrasonic waves having a frequency of 10 MHz are transmitted from a transmitter towards an artery, and reflected waves that have undergone frequency modulation as a result of the Doppler effect of the artery are received by a receiver, pulse waves are extracted by FM detection, and a pulse rate is counted and displayed. Transmission of ultrasonic waves by the transmitter and reception of reflected waves by the receiver are carried intermittently at a frequency of 64 Hz to reduce the power consumption, to enable installation even in a small portable device with low battery capacity such as a watch, and to enable prolonged usage time.

Abstract: To provide a wrist mounting type electronic apparatus facilitating attachment and detachment thereof. The wrist mounting type electronic apparatus is constituted by a main body bent substantially in an L-like shape and straps comprising a hard material. An inserting portion is provided at a front end of the strap on one side and is inserted into an inserted portion of the pivotable strap on other side. The inserted portion is penetrated with a bar member which is engaged with a small diameter hole of the inserting portion. Thereby, the wrist mounting type electronic apparatus can be mounted to the wrist. A hinge of the strap is provided with a coil spring and a state of opening the strap relative to a cabinet of the main body is maintained so far as the strap is not engaged.

Abstract: A pulse detection device has a base plate having a first main surface disposable against a part of a living body during use of the pulse detection device, a second main surface disposed opposite the first main surface, and a channel formed in the second main surface. A first piezoelectric element is disposed in the channel of the base plate for transmitting an ultrasonic signal toward an artery in the living body. A second piezoelectric element is disposed in the channel of the base plate for receiving the ultrasonic signal transmitted by the first piezoelectric element and reflected by the artery.

Abstract: A portable device for collecting information about a living body is provided, which can be worn on the human body and is capable of periodically performing cognitive faculty tests during daily life to grasp fluctuations in the memory faculty of a wearer. The device includes: a character selection unit for randomly selecting plural kinds of characters; a display portion for displaying the characters; an input unit for answering about the relationship between characters displayed randomly in the display portion in adjoining time sequence; a clocking unit for clocking a response time from when the displayed character is updated, until the input signal is inputted from the input unit; a memory unit for storing the answer from the input unit, and the response time; and a control circuit for causing the memory unit to store the response time and the answer, in time sequence.

Abstract: There is provided a pulse detecting device which resists fluctuations in the quality by locating an ultrasound transmitting piezoelectric element and an ultrasound receiving piezoelectric element with high precision. In the pulse detecting device, a detection sensitivity of the pulse is improved. A transmitting piezoelectric element and a receiving piezoelectric element are fixed onto a substrate by electrodes. The transmitting piezoelectric element is excited in response to an inputted drive voltage signal to generate an ultrasound and transmits the generated ultrasound to a living body. The receiving piezoelectric element receives an echo produced by reflecting the ultrasound transmitted into the living body by a blood flow of the living body and converts it into a voltage signal. A processing arithmetic unit compares the frequency of the ultrasound generated by the transmitting piezoelectric element with that of the echo received in the receiving piezoelectric element to thereby detect a pulse.

Abstract: A portable living body information collection device is arranged to continuously measure living body information in daily life and to efficiently collect relating mental information by timely questioning about health. The device can be worn on a human body. The portable living body information collection device extracts living body information in electrical signal form by a detection circuit and a signal processing circuit, and discretizes the information by a conversion circuit. A control circuit stores the discretized living body information in a storage and displays questions about feelings and mental conditions on a display unit periodically or when a large changes occurs in living body information. The wearer inputs answers by using an input device, and the answers are also recorded as mental information in the storage.

Abstract: An ultrasonograph capable of diagnosing a region with high sensitivity has a sensor provided with an ultrasound sending unit for sending ultrasound to the region and an ultrasound receiving unit for receiving ultrasound waves reflected from the region, a band for holding the sensor from a back side thereof relative to the diagnosed region and positioning a front side of the sensor against the diagnosed region, an information acquisition unit for acquiring information about the diagnosed region based on the reflected waves received by the ultrasound receiving unit, and an ultrasound-attenuating portion interposed between the sensor and the band for attenuating propagation of external noise from the band to the sensor and attenuating propagation of ultrasound signals through the band.

Abstract: To provide a portable GPS velocity/distance meter which may seek a suitable movement velocity by removing an affect of arm swing, save power consumption of a device, and to grip a movement condition of a carrier at a remote position, it is composed of a GPS signal receiving portion for measuring the movement velocity from a Doppler frequency, a microcomputer, an input section for setting a control condition or the like and calculation of various data including positional interval data of the GPS signal receiving section, a display section for displaying the movement velocity or the like and a transmit-receive section. Then, the microcomputer is provided with a control unit for controlling the GPS signal receiving section to intermittently perform the positional operation on the basis of the positional measurement interval and a velocity averaging unit for averaging the movement velocity.

Abstract: An information processor and a personal authentication method arranged to easily and securely perform authentication using living-body information on a person whose identification is to be authenticated. The information processor has an input section for inputting living-body information (fingerprint pattern) representing a unique feature of a person whose identification is to be authenticated, a collation section for collating the input living-body information with living-body information registered in a collation data storage section in advance, and a transmission section for transmitting authentication data to an external unit on the basis of the result of the collation.

Abstract: A measurement section for measuring a time and a period of time and outputting the measured data; a storing section for storing the measured data to be outputted from the measurement means and statistical data that is a statistical value or values obtained by sequentially processing and calculating the measured data; and a control section for setting a determination regarding whether or not the measured data to be outputted from the measurement section is stored in the storing section, and controlling the data storing operation so that the measured data is allowed to be stored in the storing section only when it has been determined to store the measured data, and calculating new statistical data to update the statistical data by employing the measured data and the statistical data stored in the storing section each time when the measured data is outputted from the measurement section.

Abstract: To provide a wrist mounting type electronic apparatus facilitating attachment and detachment thereof. The wrist mounting type electronic apparatus is constituted by a main body bent substantially in an L-like shape and straps comprising a hard material. An inserting portion is provided at a front end of the strap on one side and is inserted into an inserted portion of the pivotable strap on other side. The inserted portion is penetrated with a bar member which is engaged with a small diameter hole of the inserting portion. Thereby, the wrist mounting type electronic apparatus can be mounted to the wrist. A hinge of the strap is provided with a coil spring and a state of opening the strap relative to a cabinet of the main body is maintained so far as the strap is not engaged.

Abstract: In a light emitting indicator drive circuit which supplies a current to display elements different in display areas, a current control circuit controls the supply current of a constant-current source which is caused by a p-channel MOS-FET which supplies a current to a display element. The current control circuit controls the off-operation of the FET. A signal processing circuit calculates the deterioration data from a deterioration detecting circuit and saved segment area data to decide a supply current value to display elements as a result of the arithmetic operation. With the above operation, a difference in luminance between the display elements and the degradation of luminance caused by the deterioration can be corrected.

Abstract: An ultrasonograph capable of diagnosing a region of interest at high sensitivity is offered. The ultrasonograph comprises a sensor portion having a sending piezoelectric element for sending ultrasound toward the radial artery and a receiving piezoelectric element for receiving the ultrasound reflected from the radial artery, a belt for holding the sensor portion from its back side relative to the radial artery, and a processing portion for gaining the pulse wave and the pulse rate in the radial artery based on the reflected waves received by the receiving piezoelectric element and displaying them. The belt is provided with a recessed portion that is located opposite to the sensor portion and recessed relative to the sensor portion. The space between the sensor portion and the recessed portion functions as an ultrasound-attenuating portion.

Abstract: A current is detected through a resistor which is electrically connected in series with an FET for driving an associated one of display elements; the resultant signal is inputted to an operational amplification circuit through a capacitor to be amplified therein; and an output signal from the operational amplification circuit is converted into digital data in an A/D conversion circuit to be applied to a drive control circuit. In the drive control circuit, the amount of electric charges which have been caused to flow through the associated one of the display elements is arithmetically determined, and a period of time when the FET is kept turned ON is controlled in dependence on the amount of electric charges thus arithmetically determined.

Abstract: In a pulse wave detecting device for detecting a pulse wave by use of an ultrasonic wave, in order to prevent attenuation of the ultrasonic wave caused by a gap formed between the pulse wave detecting device and the user's skin, a transmitter for generating an ultrasonic wave and a receiver are formed on a support substrate so as to protrude therefrom. Consequently, the transmitter and receiver contact a surface of the skin and no gap is formed between the surface of the skin and the pulse wave detecting device. A pulse wave detecting device high in detection accuracy is thus realized without the need for applying a gel between the skin and a detecting surface of the device.

Abstract: A portable type distance/speed meter is designed for measuring a travel distance and a travel speed when a user walks, or runs, while realizing a correct average speed calculation in response to GPS electromagnetic waves receiving conditions.

Abstract: There is provided a pulse detecting device which resists fluctuations in the quality by locating an ultrasound transmitting piezoelectric element and an ultrasound receiving piezoelectric element with high precision. In the pulse detecting device, a detection sensitivity of the pulse is improved. A transmitting piezoelectric element and a receiving piezoelectric element are fixed onto a substrate by electrodes. The transmitting piezoelectric element is excited in response to an inputted drive voltage signal to generate an ultrasound and transmits the generated ultrasound to a living body. The receiving piezoelectric element receives an echo produced by reflecting the ultrasound transmitted into the living body by a blood flow of the living body and converts it into a voltage signal. A processing arithmetic unit compares the frequency of the ultrasound generated by the transmitting piezoelectric element with that of the echo received in the receiving piezoelectric element to thereby detect a pulse.

Abstract: A pulse wave monitor having a structure capable of automatically performing optimal positioning of a pulse wave probe with respect to a user's body. A plurality of transmitting piezoelectric vibrators for transmitting an ultrasonic wave to an artery are provided along with a plurality of receiving piezoelectric vibrators for receiving an ultrasonic wave from the artery. An optimal combination of a transmitting piezoelectric vibrator and a receiving piezoelectric vibrator for use in pulse wave measurement is determined based on the intensity of a received ultrasonic wave signal. Ultrasonic wave transmission and reception are made by the optimal combination so that accurate pulse wave detection measurement is made possible by automatic positioning of the pulse wave probe.

Abstract: There are provided a pulse detection device in which an ultrasound transmitting piezoelectric element and an ultrasound receiving piezoelectric element are precisely placed to limit variation in quality, and a method of manufacturing the pulse detection device. Further, the pulse detection sensitivity is improved in the pulse detection device. In the pulse detection device of the present invention, a transmitting piezoelectric element excited in accordance with a drive signal to generate ultrasound and to transmit the ultrasound into a living body, and a receiving piezoelectric element for receiving reflected waves of the ultrasound transmitted into the living body and reflected by a bloodstream in the living body are placed on a surface of a transmitting/receiving base plate. A processing computation section compares the frequency of the ultrasound generated by the transmitting piezoelectric element and the frequency of the reflected waves received by the receiving piezoelectric element to detect a pulse.

Abstract: A portable GPS receiving device having a storage medium which is portable by a user and small in data storage capacity such as a wrist watch type GPS receiving device, the portable GPS receiving device includes: a navigation information acquiring portion mounted on a vehicle for use, such as an in-vehicle navigation device, for acquiring any one of map information on the surroundings of the present place of the portable GPS receiving device, destination information, sightseeing information, store information, walking information and other navigation information from a navigation device whose data storage capacity is larger than that of the storage medium, to store the acquired data in the storage medium.