摘要:
In an electronic unit having a plurality of motors, a reduction in power-supply voltage is suppressed even if the plurality of motors are driven, and a difference in hand moving timing is allowed to be made inconspicuous. An electronic timepiece having a seconds motor for driving a seconds hand and an hour-and-minute motor for driving hour and minute hands, which serves as an electronic unit, moves the seconds hand and the hour and minute hands such that, when a seconds auxiliary pulse signal is output to the seconds motor at the hand moving timing of the seconds hand, control is applied in a way in which neither magnetic-field detection around the hour-and-minute motor nor the rotation detection of the hour-and-minute motor is performed at the hand moving timing of the hour and minute hands, and an hour-and-minute auxiliary pulse signal is output to the hour-and-minute motor.
摘要:
An oscillation circuit which can oscillate at a stable frequency without undergoing fluctuation in the power source voltage of a main power source. An electrostatic protection circuit (200) provided in an oscillation circuit (40) comprises a first electrostatic protection circuit section (210) connected between a signal line and a constant voltage (Vreg) to bypass a first-polarity electrostatic voltage penetrating into the signal line to the bypassing constant voltage (Vreg) side via a diode (72), and a second electrostatic protection circuit section (220) connected between the signal line and the ground side to bypass a second-polarity electrostatic voltage penetrating into the signal line to the ground via a diode (74).
摘要:
An electronic device having a plurality of motors do not cause drop of the power supply voltage and large difference in hand driving timings even when the motors are operated. When the electronic device is an electronic watch having a second motor for driving a second hand and an hour/minute hand motor for driving an hour/minute hand, and when a second auxiliary pulse signal is outputted to the second motor at the driving timing of the second hand, detection of the magnetic field around the hour/minute motor and detection of the rotation of the hour/minute motor are not performed at and after the driving timing of the hour/minute hand. An hour/minute auxiliary pulse signal is outputted to the hour/minute motor to drive the second hand and the hour/minute hand.
摘要:
Tampering with fiscal information written to memory can be detected without reducing the write speed. When fiscal information is written to first memory unit 411 by means of a fiscal control CPU 42, a memory control CPU 412 writes a first hash value corresponding to the fiscal information in second memory unit 413. When fiscal information is read from the first memory unit 411, the fiscal control CPU 42 reads the first hash value from the second memory unit 413 through the memory control CPU 412, compares the first hash value with a second hash value calculated from the fiscal information read from first memory unit 411, and detects tampering with the fiscal information.
摘要:
In the transition from a state in which charge is being transferred from a large-capacitance secondary power supply to an auxiliary capacitor through a step-up/down circuit by a step-up/down multiplying factor M' (M' is a positive real number excluding one) to a state in which the large-capacitance secondary power supply and the auxiliary capacitor are electrically directly coupled, the electrical energy is transferred from the large-capacitance secondary power supply to the auxiliary capacitor through the step-up/down circuit by a step-up/down multiplying factor M = 1 in a non-stepping-up/down state. A potential difference between the large-capacitance secondary power supply and the auxiliary capacitor is less than a predetermined potential difference. Since a sudden variation in a power supply voltage due to changing the step-up/down multiplying factor is prevented, malfunctioning in an electronic apparatus resulting from the sudden variation in the power supply voltage is prevented.
摘要:
An electronic device having a wearing band incorporating a conductive member. While maintaining the insulation of the conductive member, the production facilitation, durability, design appearance, and wearing ability of the band are improved. In an end piece fragment (21a) constituting an end piece (21), a recess (21c) is formed to hold a pipe (50) and a conductive wire (30) at a given pressure. In a bridge-shaped piece (31a) constituting a bridge-shaped member (31), a recess (31c) is formed to hold the pipe (50) and the conductive wire (30) with a play. The conductive wire (30) is attached to the end piece fragment (21a) and bridge-shaped piece (31a) while being inserted through the pipe (50). The assembled end piece (21) and bridge-shaped member (31) are rotatively coupled to each other. The end piece (21) is fixed to the main body of a wristwatch so that no load is applied to the end (30a) of the conductive wire (30).
摘要:
In making a change from a first state in which an electric charge is being transferred from a secondary power source of large capacity to an auxiliary capacitor through a voltage step-up/down circuit with a step-up/down ratio M' (which is a positive real number other than 1) to a second state in which the secondary power source of large capacity and the auxiliary capacitor are directly electrically connected to each other, the electric energy is transferred from the secondary power source of large capacity to the auxiliary capacitor through the step-up/down circuit in a non-step-up/down state with a step-up/down ratio M = 1, so that the potential difference between the secondary power source of large capacity and the auxiliary capacitor is less than a predetermined potential difference. Therefore, there is no possibility of incurring a sharp power source voltage variation due to a change in step-up ratio, so that malfunction of the electronic apparatus that accompanies a sharp voltage variation of the voltage source can be prevented.
摘要:
A power supply device for rectifying or blocking reverse current of power from an internal generator provided in a portable electronic equipment, such as, fit electronic equipment to be worn around the arm, by using a unidirectional unit including a diode, a by-pass switch connected in parallel with the diode, and a controller for turning on the by-pass switch when a forward voltage is generated in the diode, thus substantially eliminating the loss accompanied by the forward voltage at the time of power supply. Since the electromotive voltage of the generator which can be internally provided in the above type of electronic equipment ranges from a level substantially the same as the forward voltage to approximately several times the forward voltage, the rectification efficiency may be significantly improved by using the unidirectional unit.
摘要:
An electronic device having a wearing band incorporating a conductive member. While maintaining the insulation of the conductive member, the production facilitation, durability, design appearance, and wearing ability of the band are improved. In an end piece fragment (21a) constituting an end piece (21), a recess (21c) is formed to hold a pipe (50) and a conductive wire (30) at a given pressure. In a bridge-shaped piece (31a) constituting a bridge-shaped member (31), a recess (31c) is formed to hold the pipe (50) and the conductive wire (30) with a play. The conductive wire (30) is attached to the end piece fragment (21a) and bridge-shaped piece (31a) while being inserted through the pipe (50). The assembled end piece (21) and bridge-shaped member (31) are rotatively coupled to each other. The end piece (21) is fixed to the main body of a wristwatch so that no load is applied to the end (30a) of the conductive wire (30).
摘要:
A power supply apparatus employs a unidirectional unit equipped with a diode, a bypass switch connected in parallel to the diode, and a controller which turns the bypass switch ON when a forward voltage appears in the diode in order to rectify or prevent the backflow of the power from a power generating unit built in portable electronic equipment of an arm-worn type or the like; it is able to eliminate almost all loss caused by the forward voltage at the time of power supply. The electromotive force of the power generating unit incorporated in arm-worn type electronic equipment ranges from almost the same level to about a few times the level of the forward voltage; hence, the use of the unidirectional unit enables rectifying efficiency to be markedly improved.