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Hiroyuki Asano
Hiroyuki Asano, Kanagawa JP
| Patent application number | Description | Published |
|---|---|---|
| 20100324663 | STENT - There is provided a stent which can be surely indwelled up to a deeper place than an obstructed or stenosed portion of a tubular organ so as to exhibit an expansion force and keep flexibility. | 12-23-2010 |
| 20110160741 | MEDICAL TREATMENT TOOL FOR TUBULAR ORGAN - The invention is to provide a medical treatment tool for tubular organ which can surely capture or pick foreign substances such as calculi, other living tissues, etc. generated in a tubular organ or a body cavity and which can discharge or collect those foreign substances, other living tissues, etc. smoothly. | 06-30-2011 |
Hiroyuki Asano, Kashiba JP
| Patent application number | Description | Published |
|---|---|---|
| 20100033101 | Electronic Ballast with Multimode Lamp Power Control - A control means has an adjustment function in a microprocessor to adjust variations in an output to a discharge lamp due to variations in components by correcting a duty ratio of a PWM signal for varying an operating frequency of an inverter circuit so that a detected value of a second detection circuit falls within a target range. The microprocessor switches paths to transmit the PWM signal between a path passing through a feedback circuit and a path passing through a voltage follower circuit by switches a switch circuit to supply the signal through the path passing through the voltage follower circuit in adjusting output variations in the preheating mode and the starting mode. | 02-11-2010 |
| 20100270932 | FAULT DETECTION AND SHUTDOWN CONTROL CIRCUITS AND METHODS FOR ELECTRONIC BALLASTS - An electronic ballast is capable of inhibiting ballast shutdown caused by erroneously determining a fault condition. The ballast includes a DC power supply circuit for outputting DC power, a power conversion circuit that appropriately converts DC power outputted by the DC power supply circuit and outputs it to a discharge lamp, a DC voltage droop detection circuit for determining existence/absence of a fault condition in the DC power supply circuit | 10-28-2010 |
| 20100270949 | ELECTRONIC BALLAST WITH INPUT VOLTAGE FAULT CONTROL - An electronic ballast includes circuitry to prevent a switch from being damaged in the case where an abnormality occurs in an output voltage of an input power supply. A DC power supply control circuit has a zero current detection circuit that, when a current through an inductor becomes equal to or less than a predetermined current value, outputs a zero signal. A peak current detection circuit, when current through a switch the DC power supply circuit becomes equal to or greater than the predetermined current value, outputs a peak signal. A first drive circuit turns on the switch according to the zero signal, and turns off the switch Q | 10-28-2010 |
Hiroyuki Asano, Osaka JP
| Patent application number | Description | Published |
|---|---|---|
| 20100066445 | POWER AMPLIFIER, METHOD FOR CONTROLLING POWER AMPLIFIER, AND WIRELESS COMMUNICATION APPARATUS - A power amplifier includes: a distortion compensating circuit that causes a bias circuit to have an output impedance so that a subsequent block bipolar transistor for signal amplification-use has a maximized saturated output power; and a distortion compensating circuit that causes a bias circuit to have an output impedance so that a distortion of an output power of the power amplifier | 03-18-2010 |
Hiroyuki Asano, Kawasaki JP
| Patent application number | Description | Published |
|---|---|---|
| 20100054232 | TRANSMISSION SYSTEM - A transmission system includes: a transmission-side device that has a transmission-side clock generation unit that generates a first clock signal on the basis of a reference clock signal ; a clock extraction unit that removes a data clock signal superimposed with transmission data to a reception-side device; a clock difference acquisition unit that determines a difference between the first clock signal and the data clock signal; and a packet generation unit that packetizes the information on the difference determined by the clock difference acquisition unit; and the reception-side device that has a reception-side clock generation unit that generates a second clock signal on the basis of the reference clock; a packet reception unit that receives the information on the packetized difference from the transmission-side device; and a data clock regeneration unit that regenerates the data clock signal on the basis of the second clock signal and the difference information. | 03-04-2010 |
Hiroyuki Asano, Nara JP
| Patent application number | Description | Published |
|---|---|---|
| 20100001649 | Electronic Ballast with Lamp End of Life Detection and Protection Circuits - An electronic ballast A includes an inverter circuit for converting a DC voltage into a high-frequency voltage, a resonant circuit which is connected between outputs of the inverter circuit and lights a discharge lamp at a high frequency by a resonant action, a dimming circuit for changing an output voltage to the discharge lamp by changing an operating frequency of the inverter circuit, a DC component detecting circuit for detecting a DC voltage component of the discharge lamp and a control operating circuit which detects an output signal of the DC component detecting circuit for every predetermined period to reduce or stop an output to the discharge lamp in the case where the output signal exceeds a predetermined reference value and to prohibit the protection operation when periodic change amount in the output signal reaches a predetermined value or higher. | 01-07-2010 |
| 20100001650 | Lamp End of Life Protection Circuit and Method for an Electronic Dimming Ballast - A electronic ballast includes an inverter circuit for converting a DC voltage into a high-frequency voltage, a resonant circuit connected between outputs of the inverter circuit so as to light a discharge lamp by a resonant action, a control circuit for controlling the inverter circuit, a dimming circuit for continuously changing an output voltage to the discharge lamp by changing an operation frequency in the inverter circuit, a DC component detection circuit and a voltage comparator for detecting whether or not the discharge lamp is at the end of the life at predetermined intervals and outputting an end of life detection signal upon detection of the end of the life state, and a frequency control circuit and a driving circuit for reducing or stopping an output to the discharge lamp by controlling switching elements in response to a life end detection signal inputted from the voltage comparator. | 01-07-2010 |