摘要:
A pair of rotary deflection electrodes are provided to confront with each other in an ink jet system printer in order to deflect charged ink droplets emitted from a nozzle as they pass through a high voltage electric field established therebetween. Cleaners are installed close to the rotary deflection electrodes at the position where the electric field established between the rotary deflection electrodes will not be disturbed by the cleaners in order to sweep the rotary deflection electrodes as they rotate.
摘要:
The size of patterns printed by an ink jet system printer including an ink liquid issuing nozzle, a charging electrode and deflection electrodes is temperature dependent. When the ink liquid temperature increases, viscosity of the ink liquid reduces and hence a flow rate of the ink liquid increases. This causes both mass and a flying rate of an ink droplet emitted from the nozzle to increase. Therefore, a deflection amount becomes smaller and hence the printed pattern size becomes smaller than that of ordinary desired. A temperature senser is provided on an ink conduit adjacent to the nozzle, for detecting the ink liquid temperature and generating detecting signals. A voltage level of video signals applied to the charging electrode or a voltage level applied to the deflection electrodes is varied in accordance with the detecting signals in order to stabilize the size of the printed pattern. When the ink liquid temperature increases, the voltage level of the video signals applied to the charging electrode or the voltage level applied to the deflection electrodes is compensatively increased.
摘要:
A centralized Content Management System (“CCMS”) facilitates management of packages comprising assets comprising meta-data and associated content of video programs for distribution to various types of service providers and equipment locations therein. The CCMS can receive meta-data and associated content, normalize the meta-data according to various formats based on various rules depending on where the meta-data and contents are to be distributed, and the distribute the content. The CCMS has various capabilities for managing packages, including adapting the meta-data and content for different types of equipment or individual locations based on rules for that service provider, thus providing an automated system reducing error and time in distributing video assets to a number of locations.
摘要:
An inverter controller comprising an AC motor as a load. A rectifying circuit converts AC power from an AC power source into DC power. A smoothing capacitor smoothens a DC voltage from the rectifying circuit. An inverter circuit converts DC power supplied via the smoothing capacitor into a desired frequency. A current detection circuit detects a output current of the inverter circuit. A voltage detection circuit detects a terminal voltage (Vpn) of the smoothing capacitor. A voltage command calculation circuit calculates a voltage command to the AC motor. A speed command calculation circuit calculates a speed command to be used when it is determined that the AC power source is in a power failure state or when the terminal voltage (Vpn) reaches a certain value.
摘要:
It is an object of the invention to provide a pump jack pump-off control method and a pump jack control apparatus in which, even when the speed of a pump jack is reduced due to generation of a pump-off condition, the pump jack is not caused to stop due to the motor overload abnormality or the coagulated crude oil and, even when the pump-off condition is generated, the reduction of the production capacity of the pump jack can be prevented as much as possible. On detecting the pump-off condition, while the pump jack is in operation with the speed thereof being reduced, or while the pump jack is in operation at the lowest speed, according to the overload warning signal of an ac electric motor, the pump jack is switched over to its intermittent operation. Also, the pump jack can be operated in such a manner that the stroke speed of the pump jack in the up stroke operation can be switched from a sinusoidal wave form over to a rectangular wave form, or, in the operation of the pump jack by an inverter, the pump jack can be operated such that it can carry out its up stroke operation with a limit imposed on torque.
摘要:
The present invention provides an inverter controller and a method for operating the inverter controller, enabling continuous operation without requiring difficult adjustments and without causing a trip or unnecessary torque ripple at overvoltage or undervoltage during an instantaneous power failure or during regenerative operation.An inverter controller (20) equipped with a voltage detection circuit (5) for detecting the terminal voltage of the smoothing capacitor (2) and a speed command selection circuit (6) for detecting an instantaneous power failure in an AC power source has a power calculation circuit (36) for calculating the power output thereof and a speed command calculation circuit (7) for calculating a power output target value and a speed command value during the instantaneous power failure.
摘要:
An image processing apparatus, for processing an image signal representing pixel values of pixels so as to display an image including the pixels by an image display apparatus, includes a detection section for detecting a low frequency portion of the image signal, which corresponds to a first series of pixels having a first pixel value and a second series of pixels having a second pixel value different from the first pixel value, the second series of pixels following the first series of pixels; and a signal expansion section for expanding a prescribed portion of the low frequency portion of the image signal, the prescribed portion including at least one of the first series of pixels and the second series of pixels, such that the first pixel value is gradually changed to the second pixel value.
摘要:
A windshield spacer basically has a mounting portion and a windshield supporting portion. The mounting portion has a fastening structure configured and arranged to be fixedly coupled to a vehicle body part. The windshield supporting portion is integrally formed with the mounting portion, and configured and arranged relative to the mounting portion to restrict a movement of a windshield in a direction substantially parallel to a main surface of the windshield and in a direction substantially perpendicular to the main surface of the windshield. The windshield spacer preferably further includes a molding retaining portion integrally formed with the mounting portion, and configured and arranged relative to the mounting portion to rigidly retain a windshield molding.
摘要:
An image display device of the present invention is provided with a liquid crystal display panel for displaying an image in accordance with an input of a chrominance signal, a sensor for sensing light characteristics of external light, and a chrominance signal converter for converting a chrominance signal to be inputted into an image display section in accordance with an output of the sensor. The chrominance signal converter includes a target display color setting section for setting a color to display as an image agreeable with chromatic adaptation characteristics of human, according to the output of the sensor, and a color reproduction section for reproducing a target color set by the target display color setting section, by using three primary color with chromaticities suitable for the output of the sensor. The target display color setting section converts the chrominance signal into a chrominance signal of the target display color reproduced by the color reproduction section. Provided is an image with color tone, in which no change is sensed by a user, even if external light condition, that is the light characteristics of the external light.
摘要:
A technique for controlling an AC motor. An electric power is output to the AC motor. The output current of an electric power converter is controlled based on a difference signal of an output current detection signal and a current command signal of the electric power converter. When the AC motor is in a free run condition, current control is conducted by forcing the current command signal to be zero so that a current in the AC motor is made zero. The amplitude and phase and angular velocity of a residual voltage of the AC motor are found based on a calculated output voltage command.