Patent application number | Description | Published |
20150102795 | LEVEL SHIFTER, DC-DC CONVERTER, AND LEVEL SHIFT METHOD - A level shifter includes: a first cascode portion, including a first transistor of a first conductivity type and a second transistor of a second conductivity type which are cascode-coupled to each other, configured to transmit a first input signal; a second cascode portion, including a third transistor of the first conductivity type and a fourth transistor of the second conductivity type which are cascode-coupled to each other, configured to transmit a second input signal; a latch portion configured to retain a first output signal and a second output signal obtained by changing, based on a first voltage obtained by boosting a power supply voltage, potential levels of the first input signal and the second input signal; and a potential-difference suppression circuit, coupled in parallel to the first cascode portion, configured to control a potential difference between source and drain of each of the first transistor and the second transistor. | 04-16-2015 |
20150180411 | OSCILLATOR AND POWER MANAGEMENT APPARATUS - An oscillator includes a transformer, a first capacitor, a first transistor, a depletion or native second transistor, and a current control circuit. The transformer includes a primary winding configured to receive an input voltage and a secondary winding configured to boost the input voltage to generate an output voltage. The first capacitor is configured to form an LC resonant circuit together with the secondary winding to cause oscillation operation, the first transistor is connected in series with the primary winding, and the output voltage is applied to a control terminal of the first transistor. The depletion or native second transistor is connected in series with the primary winding and the first transistor, and the current control circuit is configured to adjust a control voltage applied to a control terminal of the second transistor to control a current flowing through the first winding. | 06-25-2015 |
20150365009 | SIGNAL CONVERSION CIRCUIT AND POWER SUPPLY APPARATUS - A power supply apparatus including: a boost converter configured to generate a power supply voltage to drive to a load circuit from a voltage received from a voltage generation unit; an oscillator configured to receive the minute voltage, and to generate an alternating current signal; and a signal conversion circuit which further includes a half-wave generation circuit configured to receive the alternating current signal, and to generate a half-wave signal of a high potential side or a low potential side, and at least one inverter configured to receive the generated half-wave signal, and to generate a pulse signal; wherein the boost converter is driven by the pulse signal output from the signal conversion circuit in order to generate the power supply voltage. | 12-17-2015 |
Patent application number | Description | Published |
20140305727 | BICYCLE DRIVE UNIT - In accordance with a first aspect, a bicycle drive unit includes a first bottom bracket, a crank axle, and a first motor. The first bottom bracket is configured to be coupled to a first axial end of a bottom bracket shell of a bicycle. The crank axle is rotatably supported by the first bottom bracket with respect to a rotational axis. The crank axle has a first end portion and a second end portion. The first motor includes a first casing non-rotatably coupled to the crank axle, a second casing non-rotatably coupled to the bottom bracket shell, a first rotor having a first magnet disposed on the first casing, and a first stator non-rotatably coupled to the first bottom bracket. The first magnet and the first stator radially face with each other with respect to the rotational axis of the crank axle. | 10-16-2014 |
20140352478 | CONTROL DEVICE - A control device is configured to be installed on a handlebar of a bicycle and configured to operate a brake device on the bicycle. The control device basically includes a bicycle attachment member, a brake operating member and at least one of a wireless communication unit and a notification unit. The brake operating member is pivotally coupled to the attachment member to pivot about a first axis. The least one of the wireless communication unit and the notification unit is disposed on the brake operating member. | 12-04-2014 |
20150088389 | TRANSMISSION CONTROL SYSTEM - A transmission control system is provided for used in a bicycle having a crank, a front sprocket that is rotatable independent of the crank, a rear wheel, a rear sprocket that is rotatable independent of the rear wheel, a chain that engages with the front sprocket and the rear sprocket, and at least one external transmission mechanism. The transmission control system is basically provided with a driving force output device, a detection device and at least one controller. The detection device is one of a rotational state detection device, a manual drive force detecting device and a speed detection device. The at least one controller is programmed to control the driving force output device to drive the chain and to control a gear shifting action of the at least one external transmission mechanism to shift gears, based on a comparison of the detection results by the detection device and a prescribed state or a prescribed value. | 03-26-2015 |
20150120119 | BICYCLE CONTROL APPARATUS - A bicycle control apparatus is basically provided with a manual drive force detecting device, a rotation state detection device and a controller. The manual drive force detecting device detects a manual drive force. The rotation state detection device detects a parameter relating to crankshaft rotation of a crankshaft. The controller is programmed to control at least one of a driving unit that generates an auxiliary drive force and an electric transmission unit so that the manual drive force and the parameter relating to the crankshaft rotation will be within a prescribed range. | 04-30-2015 |
20150307157 | GEAR CHANGING CONTROL APPARATUS - A gear changing control apparatus is provided for controlling a plurality of operation modes of a drive unit of an electric transmission that assists a manual drive force of a bicycle. The control apparatus includes a controller. The controller selects a gear changing range that can be used according to a selected operation mode from a plurality of operation modes. The controller controls the electric transmission within the gear changing range that is selected. | 10-29-2015 |
20150352973 | POWER SUPPLY SYSTEM, ELECTRICALLY ASSISTED SYSTEM, AND ELECTRIC GEAR SHIFT SYSTEM - A power supply system is basically provided for supplying electric power to an electric component of a bicycle. The power supply system includes a first battery, a second battery, an operating unit and a power supply controller. The power supply controller is configured to transition an operating state by electric power of the second battery and supply electric power from the first battery to the electric component when the operating unit is operated in a stopped state. | 12-10-2015 |
20150367750 | BICYCLE CONTROL APPARATUS - A bicycle control apparatus is configured to control a drive unit having a motor that assist in manual driving. The bicycle control apparatus includes an operating unit and a control unit. The operating unit is configured to be operated in accordance with first and second operating methods that are different from each other. The control unit is configured to change a setting state of a function that is set in advance without driving the drive unit in response to the operating unit being operated in accordance with the first operating method. The control unit is configured to drive the drive unit in response to the operating unit being operated in accordance with the second operating method. | 12-24-2015 |