Abstract: A contact structure for electroconductively connecting between an electronic part and a board includes a contact member, which is provided between the electronic part and the board, having a leg portion for electroconductively connecting between the electronic part and the board. The leg portion of the contact member can be bent and deformed in a simple and reliable manner by utilizing internal stress even if the contact member is formed very fine corresponding to forming the electronic part very fine, and thus, the leg portion of the contact member can appropriately serve as an elastic contact member The contact member can absorb distortion due to thermal expansion coefficient differences between the electronic part and the board, thereby ensuring electroconductive connection between the electronic part and the board.

Abstract: The present invention relates to a semiconductor device and a method for manufacturing the same that prevent deformation or cracking caused by a difference in coefficient of thermal expansion. Elastic contacts provided on upper and lower surfaces of an interposer are elastically biased against the relatively displaced electrodes. The interposer thus compensates for displacement caused by different coefficients of thermal expansion so that an electrical connection between the electrodes of the first electronic component and the electrodes of the second electronic component is constantly maintained. Accordingly, this prevents separation or cracking in electrode connection areas.

Abstract: A contact structure for electroconductively connecting between an electronic part and a board includes a contact member, which is provided between the electronic part and the board, having a leg portion for electroconductively connecting between the electronic part and the board. The leg portion of the contact member can be bent and deformed in a simple and reliable manner by utilizing internal stress even if the contact member is formed very fine corresponding to forming the electronic part very fine, and thus, the leg portion of the contact member can appropriately serve as an elastic contact member The contact member can absorb distortion due to thermal expansion coefficient differences between the electronic part and the board, thereby ensuring electroconductive connection between the electronic part and the board.

Abstract: A contact structure includes contact members having leg portions which are deflected using internal stresses. Since the internal stress is used, the leg portions of the contact members are easily and reliably deflected even when the size of the contact members is reduced in accordance with the size reduction of an electronic component. Since the leg portions are elastically deformed and function as elastic contacts, a strain caused by a difference in coefficient of thermal expansion between the electronic component and the substrate can be absorbed by the contact members. In addition, since a plurality of elastic contacts are provided, even if there is a displacement between the electronic component and the substrate, an electrical connection between the electronic component and the substrate is reliably obtained.

Abstract: A compact, simple connection unit for mounting an electronic component to a substrate includes connectors having one or more arm portions. The connectors are provided with internal stress, which allows the arm portions to grip the electronic component so that the electronic component can be firmly fixed to the substrate.

Abstract: Current mirror circuits that are parts of a first circuit and a second circuit, respectively, allow the same constant current to flow through the input side and the output side. Therefore, the base-emitter voltages of transistors Tr1 and Tr4, which tend to vary due to a temperature variation, can be set identical and hence can cancel out each other sufficiently. The same is true of the base-emitter voltages of transistors Tr5 and Tr8. Therefore, an input signal can be converted by a function having reference voltages as change points without being affected by temperature. Desired function circuits can be obtained by combining first circuits and second circuits in various manners.

Abstract: Current mirror circuits that are parts of a first circuit and a second circuit, respectively, allow the same constant current to flow through the input side and the output side. Therefore, the base-emitter voltages of transistors Tr1 and Tr4, which tend to vary due to a temperature variation, can be set identical and hence can cancel out each other sufficiently. The same is true of the base-emitter voltages of transistors Tr5 and Tr8. Therefore, an input signal can be converted by a function having reference voltages as change points without being affected by temperature. Desired function circuits can be obtained by combining first circuits and second circuits in various manners.

Abstract: When output signal of an oscillator are binarized by binarization means, a timing signal for driving a sequence controller for controlling a correction portion is rested temporarily. The process for overwriting the contents of an E2ROM of the correction portion side with an RAM is rested temporarily. This can prevent noise product at the overwriting timing. Binary signals after binarization can be prevented from being varied. The oscillator can be driven stably so as to give an angular speed output with high accuracy.

Abstract: A sinusoidal signal generating circuit for ensuring a small phase difference with respect to a reference signal is provided. The sinusoidal signal generating circuit comprises a capacitor for charging/discharging, a charging unit for charging a predetermined current to the capacitor, and a discharging unit for discharging a current therefrom, whereby an output signal is produced by the change in the potential of the capacitor, wherein the charging unit comprises a charging current adjusting unit for adjusting the magnitude of the charging current, and the discharging unit comprises a discharging current adjusting unit for adjusting the magnitude of the discharging current, and a control signal generating means is provided for supplying a plurality of control signals to the charging current adjusting unit and the discharging current adjusting unit in such a manner that the potential of the capacitor is changed into a sinusoidal waveform.

Abstract: A sinusoidal signal generating circuit for ensuring a small phase difference with respect to a reference signal is provided. The sinusoidal signal generating circuit comprises a capacitor for charging/discharging, a charging unit for charging a predetermined current to the capacitor, and a discharging unit for discharging a current therefrom, whereby an output signal is produced by the change in the potential of the capacitor, wherein the charging unit comprises a charging current adjusting unit for adjusting the magnitude of the charging current, and the discharging unit comprises a discharging current adjusting unit for adjusting the magnitude of the discharging current, and a control signal generating means is provided for supplying a plurality of control signals to the charging current adjusting unit and the discharging current adjusting unit in such a manner that the potential of the capacitor is changed into a sinusoidal waveform.

Abstract: A driving signal is provided to six electrodes (driving electrodes) on one of the surfaces of each of three vibration legs of a three-pronged tuning-fork-type piezoelectric oscillator. Two output electrodes from among six electrodes (output electrodes) on the other surface thereof are connected to two current-to-voltage conversion devices, respectively. Since the two output electrodes are imaginarily short-circuited by the current-to-voltage conversion devices, there is no need to provide a ground electrode between the output electrodes. This makes it possible to simplify an electrode manufacturing process.

Abstract: When output signals of an oscillator are binarized by binarization means, a timing signal for driving a sequence controller for controlling a correction portion is rested temporarily. The process for overwriting the contents of an E2ROM of the correction portion side with an RAM is rested temporarily. This can prevent noise produced at the overwriting timing. Binary signals after binarization can be prevented from being varied. The oscillator can be driven stably so as to give an angular speed output with high accuracy.

Abstract: A pair of electrodes are formed on the front surface and the rear surface of each vibrator in a longitudinal direction, and dielectric polarization is performed in the direction from the front surface to the rear surface. When I/V converters constituted by operational amplifiers are connected to electrodes of the middle vibrator, the detection electrodes can be grounded to a reference potential Vref through the imaginary short circuits of the I/V converters, so that a gyroscope can be vibrated without a conventional ground electrode. Therefore, the number of electrodes of the vibrators can be reduced, and an interval size between the drive electrodes or between the detection electrodes can be assured. For this reason, sufficient dielectric polarization can be performed when a high voltage is applied.

Abstract: Two current outputs are converted into voltage outputs by I/V converters, and further converted into digital outputs D1 and D2 by binarizing circuits. The outputs are added by an adder in a phase shifter, and converted into an output like a triangular wave by an integrator. The output like a triangular wave is compared with a reference in a binarizing circuit and, therefore, it is possible to shift the phase from the median of the phase differential between the two signals by 90 deg with high precision.

Abstract: An battery-driven electronic apparatus incorporating battery has a source battery, a driven circuit driven by the battery, a pair of external terminals connected to the both ends of the source battery and a capacitor provided between the source battery and the external terminals.

Abstract: A theft monitoring apparatus does not require any complicated synchronous relationship for the signals received from a plurality of antennas, permits easier installation and maintenance and inspection, and does not adversely affect the appearance of a shop where it is installed. A plurality of antennas (1, 2) send out transmitter signals composed of burst signals (A, B) which continue in predetermined cycles (T1, T2). The transmitter signal from one antenna (antenna 2) except other antenna (antenna 1) is provided with a pause period (D) during which no burst signal (B) is issued. During the pause period (D), the burst signal (A) is issued from the antenna (1).

Abstract: An alarm tag releasing device is provided for a theft monitoring device. The theft monitoring device has a gate installed in a desired position and producing a theft monitoring region of a predetermined range by transmitting radio waves at a predetermined wavelength. A buzzer tag is attached to a protected item by a built-in lock mechanism so as not to be detached, and an alarm circuit operated by a built-in battery to sound an alarm when the radio waves at the predetermined wavelength are received when the buzzer tags enters the monitoring region, said alarm tag releasing device comprising: an insertion part having a shape corresponding to the outer diameter of the buzzer tag and into which the buzzer tag can be inserted, such that the lock mechanism provided in the buzzer tag is unlocked when the buzzer tag is inserted into the insertion part.