Abstract: A communication control method which prevents control over a USB device from being hampered and reducing power consumption at the same time. When the USB device and a control apparatus, which controls the USB device, are connected to the printing apparatus, and a communication via the printing apparatus is being carried out, the printing apparatus and the USB device are not shifted into a power saving mode in which energization of the printing apparatus and the USB device is limited. When the USB device and the control apparatus are connected to the printing apparatus, and a communication via the printing apparatus is not being carried out, the printing apparatus and the USB device are shifted into the power saving mode.

Abstract: A hybrid work machine engine control device which is mounted on a hybrid work machine having a working unit that operates with operating oil supplied from a hydraulic pump and which controls an internal combustion engine that drives a generator motor and the hydraulic pump with generated power, includes: a processing unit that increases torque required for the generator motor to generate electric power with a lapse of time and decreases absorption torque that the hydraulic pump absorbs when the generator motor generates electric power during operation of the internal combustion engine.

Abstract: A control device of an electric motor includes: an operating state setting unit configured to set an operating state; a maximum output acquiring unit configured to acquire maximum output of the electric motor that is preset according to the operating state set; a speed detecting unit configured to detect a speed of the electric motor; a torque limit value calculating unit configured to calculate a torque limit value based on the speed and the maximum output; and a torque limiting unit configured to limit torque of the electric motor by the torque limit value when accelerating the electric motor.

Abstract: A drive device of a construction machine includes a pump passage connected to a hydraulic pump, first and second supply passages connected to the pump passage, first and second passages connected to the first supply passage, third and fourth passages connected to the second supply passage, a first valve connected to the first and third passages, a second valve connected to the second and fourth passages, a first bucket passage connecting the first passage to a cap-side space of the bucket cylinder through the first valve, a second bucket passage connecting the third passage to a rod-side space of the bucket cylinder through the first valve, a first arm passage connecting the second passage to a rod-side space of an arm cylinder through the second valve, and a second arm passage connecting the fourth passage to a cap-side space of the arm cylinder through the second valve.

Abstract: A control device of an electric actuator adapted to perform a forward-reverse movement includes a control unit adapted to be operated in a forward direction or a reverse direction in accordance with the forward-reverse movement of the electric actuator. It also includes a pilot circuit, which is connected to the control unit and which generates a forward pilot pressure or a reverse pilot pressure in accordance with the forward operation or the reverse operation of the control unit. The control device has a differential pressure acquiring unit that acquires a differential pressure between a pilot pressure corresponding to an operation direction of the control unit and a pilot pressure, in a direction opposite to the operation direction, and it has a control command generator that generates a control command for controlling the electric actuator based on the differential pressure acquired by the differential pressure acquiring unit.

Abstract: In controlling an engine generating motive power of which an output shaft extracting the generated motive power is connected to a generator motor, an engine control device causes the generator motor to generate motive power when both of a first condition satisfied based on a comparison of an actual revolution speed of the engine with a revolution speed acquired from first and second relationships and a second condition satisfied based on a comparison of a torque of the engine at the actual revolution speed with a torque acquired using the first relationship at the actual revolution speed are satisfied. The first relationship is between the revolution speed of the engine and the torque generated by the engine at the revolution speed, and the second relationship is between the torque and the revolution speed of the engine and defines a magnitude of the motive power generated from the engine.

Abstract: An engine control apparatus for controlling an engine which drives a hydraulic pump to discharge operation oil, the engine control apparatus includes: a pump driving power limit unit configured to limit pump driving power, which is power used to drive the hydraulic pump, based on pressure of the operation oil discharged by the hydraulic pump when in a state in which a part of the operation oil discharged by the hydraulic pump is released because pressure of the operation oil discharged by the hydraulic pump has become equal to or higher than preset relief pressure; and an engine output control unit configured to control output of the engine so that target speed, which is speed of the engine set as a target, becomes equal to or higher than a value of a point of time when limiting of the pump driving power is started.

Abstract: The present invention includes an information generator to set a lever manipulation amount total sum decrease flag during a period when a lever manipulation amount total sum is decreasing, a first processor to process an engine actual output, an engine actual output latching function block to output the maximum value of the engine actual output until the present during a period in which a lever manipulation amount total sum decrease flag is not set, and output the present engine actual output during a period in which the flag is set, a second processor to output an engine target output based on the engine output, and a controller to control the engine speed under limitation of the engine target output.

Abstract: An information processing apparatus which is capable of maintaining the amount of radiation noise from a semiconductor integrated circuit constant. A voltage value information storage unit holds information indicative of a voltage to be applied to the semiconductor integrated circuit. A sub CPU modulates a clock frequency of a clock to be supplied to the semiconductor integrated circuit with a modulation width determined based on the information held in the voltage value information storage unit and supplies the clock.

Abstract: An image processing apparatus that stores print data in a cache memory while preventing performance from being degraded by cache flushing. The image processing apparatus includes a cache for storing print data, and an SD card for storing the print data stored in the cache. A cache controller of a CPU transmits an SD card write request for storing the print data stored in the cache into the SD card to a secondary storage device access controller. When the SD card write request is received after printing of the print data has been normally terminated, the secondary storage device access controller disables execution of the storage processing.

Abstract: A sponge roller is made of a polyvinyl acetal porous resin material having elasticity in a wet state, includes a roller in an approximate cylinder form and a plurality of protrusions formed integrally on an outer peripheral surface of the roller, and rotates the multiple protrusions to make contact with a surface to be cleaned so as to clean the surface. The polyvinyl acetal porous resin material constituting the sponge roller contains a cationic functional group.

Abstract: It is determined that assisting is required when a deviation of a target matching engine speed and a current engine speed is equal to or more than a predetermined value, and for a predetermined period of time since the time point at which it is determined that assisting is required, a target assist engine speed is set at a high rotation target matching engine speed which is more than the target matching engine speed, and thereafter the target assist engine speed is set gradually closer to the target matching engine speed, and an assist torque command value is output to the generator assisting output of the engine, and the engine speed is controlled, so that the engine speed attains the target assist engine speed.

Abstract: An image forming system that is capable of preventing obstruction of transmission of a packet to an information processing apparatus from a USB device supporting USBNW due to the shift to the sleep mode. The image forming system includes an information processing apparatus, an image forming apparatus with a sleep mode, and a USB device that is connected to the information processing apparatus through the image forming apparatus and is controlled by the information processing apparatus. The image forming apparatus includes a first determination unit that determines whether the USB device supports USBNW, a second determination unit that determines whether a packet received from the information processing apparatus is processed by a module supporting USBNW, and a control unit that prohibits the image forming apparatus from shifting to the sleep mode when the USB device supports USBNW and when the packet is processed by the module supporting USBNW.

Abstract: A battery charge/discharge control device which performs battery charge/discharge control in a working machine with a battery capable of storing electric energy generated by a generator motor coupled to an engine and driving the generator motor or at least one of other electric actuators by the stored electric energy and a controller which controls a distribution of the electric energy among the battery, the generator motor, and the electric actuator, wherein the controller performs the charge/discharge control in which the electric energy of the battery is discharged when the engine is driven and recharging to the battery is permitted on a condition that a state in which an engine speed is equal to or lower than a predetermined engine speed is maintained for a predetermined time after the battery is completely discharged.

Abstract: A hybrid excavator includes an engine, a generator motor, a capacitor, a swing motor, a transformer, a transformer temperature sensor, a capacitor temperature sensor, and a hybrid controller. An overheat suppression control unit of the hybrid controller changes the amount of power regenerated by the swing motor supplied to the capacitor and the amount of power regenerated by the swing motor supplied to the generator motor based on a temperature of the transformer detected by the transformer temperature sensor and a temperature of the capacitor detected by the capacitor temperature sensor.

Abstract: An image forming apparatus includes execution units configured to execute predetermined functional processing, and switches to a second power state lower than a first power state. After a user selects priority on power saving or priority on convenience as a condition for switching to the second power state, the image forming apparatus receives a plurality of recovery triggers for switching to the first power state. A number of times of detection of each recovery trigger received is stored. If the user selects priority on convenience, it is determined whether the number of times of detection of each recovery trigger requiring a large power amount consumed by execution units associated with each recovery trigger falls below a predetermined threshold. If it is determined that the number of times of detection of a recovery trigger falls below the predetermined threshold, the recovery trigger may be disabled.

Abstract: A battery charge/discharge control device which performs battery charge/discharge control in a working machine with a battery capable of storing electric energy generated by a generator motor coupled to an engine and driving the generator motor or at least one of other electric actuators by the stored electric energy and a controller which controls a distribution of the electric energy among the battery, the generator motor, and the electric actuator, wherein the controller performs the charge/discharge control in which the electric energy of the battery is discharged when the engine is driven and recharging to the battery is permitted on a condition that a state in which an engine speed is equal to or lower than a predetermined engine speed is maintained for a predetermined time after the battery is completely discharged.

Abstract: An image forming apparatus includes execution units configured to execute predetermined functional processing, and switches to a second power state lower than a first power state. After a user selects priority on power saving or priority on convenience as a condition for switching to the second power state, the image forming apparatus receives a plurality of recovery triggers for switching to the first power state. A number of times of detection of each recovery trigger received is stored. If the user selects priority on convenience, it is determined whether the number of times of detection of each recovery trigger requiring a large power amount consumed by execution units associated with each recovery trigger falls below a predetermined threshold. If it is determined that the number of times of detection of a recovery trigger falls below the predetermined threshold, the recovery trigger may be disabled.

Abstract: A battery charge/discharge control device which performs battery charge/discharge control in a working machine with a battery capable of storing electric energy generated by a generator motor coupled to an engine and driving the generator motor or at least one of other electric actuators by the stored electric energy and a controller which controls a distribution of the electric energy among the battery, the generator motor, and the electric actuator, wherein the controller performs the charge/discharge control in which the electric energy of the battery is discharged when the engine is driven and recharging to the battery is permitted on a condition that a state in which an engine speed is equal to or lower than a predetermined engine speed is maintained for a predetermined time after the battery is completely discharged.

Abstract: The present invention includes an information generator to set a lever manipulation amount total sum decrease flag during a period when a lever manipulation amount total sum is decreasing, a first processor to process an engine actual output, an engine actual output latching function block to output the maximum value of the engine actual output until the present during a period in which a lever manipulation amount total sum decrease flag is not set, and output the present engine actual output during a period in which the flag is set, a second processor to output an engine target output based on the engine output, and a controller to control the engine speed under limitation of the engine target output.