摘要:
A brushless motor-driving circuit is disclosed which includes an initializing element setting an initial rotating speed, an oscillating element for generating a frequency corresponding to the initial rotating speed set by the initializing element, a frequency-controlling element for causing the frequency generated by the oscillating element to change from the frequency corresponding to the initial rotating speed to a frequency corresponding to a constant rotating speed, a driving-signal-generating element for generating driving signals having a plurality of phases based on the generated frequency of the oscillating element, and a driving element for driving coils having a plurality of phases based on the driving signals having the plurality of phases generated by the driving-signal-generating element.
摘要:
A motor driving apparatus and a driving method thereof, and a mobile terminal in which a terminal voltage value of a terminal is detected at a terminal voltage detection unit, and is held in a holding circuit. A difference between the terminal voltage value detected this time and the terminal voltage value detected last time and held in the holding circuit is calculated in a difference circuit, and the calculated difference voltage value is compared with a reference voltage value determining a rated frequency in a comparator. A synchronizing reference voltage value of a reference voltage source is controlled by a control circuit on the basis of each comparison result in the comparators and a frequency of a synchronizing reference signal specified as a basic operation time unit at the time of synchronous driving is corrected so that a stable synchronous operation condition can be obtained before a rotor of a brushless motor steps out from a synchronous operation.
摘要:
A motor driving apparatus and a driving method thereof, and a mobile terminal in which a terminal voltage value of a terminal is detected at a terminal voltage detection unit, and is held in a holding circuit. A difference between the terminal voltage value detected this time and the terminal voltage value detected last time and held in the holding circuit is calculated in a difference circuit, and the calculated difference voltage value is compared with a reference voltage value determining a rated frequency in a comparator. A synchronizing reference voltage value of a reference voltage source is controlled by a control circuit on the basis of each comparison result in the comparators and a frequency of a synchronizing reference signal specified as a basic operation time unit at the time of synchronous driving is corrected so that a stable synchronous operation condition can be obtained before a rotor of a brushless motor steps out from a synchronous operation.
摘要:
A thin-film multilayer wiring board with first and second metallic wiring layers formed on a substrate and an organic insulating layer interposed between the metallic wiring layers. The insulating layer has the first metallic wiring layer and via holes in a thickness of the insulating layer. The lands of the first and second metallic wiring layers are electrically connected by via studs which are made of a conductive metal filled in the via holes.
摘要:
A thin-film multilayer wiring board comprising a first and a second metallic wiring layers formed on a substrate with an organic insulating layer interposed between the metallic wiring layers, wherein the lands of the first and second metallic wiring layers are electrically connected by via studs made of a conductive metal filler formed by electroless plating, and the difference between the top end diameter and the base diameter of each via stud is 10% or less, or the angle made by the taper of the interface between the insulating layer and each via stud against the axis thereof is 5° or less, can provide a high wiring density and signal transmission performance.
摘要:
A charge control device including: a charge control unit configured to select a power storage device to be charged from a plurality of power storage devices in accordance with degrees of subsequent deterioration of the power storage devices, the degrees being calculated based on battery information of the power storage devices each having a secondary battery; and a transmission unit configured to transmit a charge command to a power storage device selected by the charge control unit.
摘要:
A signal transfer device includes an interface and a read and write circuit. The interface has a posted write data protocol and transfers data to a memory control device that controls access to a shared memory. If a write request for writing data to the shared memory via the interface is issued, the read and write circuit acquires a write address from the write request, and puts a read request for reading data from the write address on standby until a transfer amount of write data exceeds a total size of buffers on a signal transfer path to the shared memory.
摘要:
Provided is a communication device that facilitates hearing even in an environment in which hearing of sound is difficult only with air conduction sound, and requires fewer components, facilitates implementation. The communication device 100 includes: a protecting panel 101 serving as a contact member disposed at a position at which at least a part of the contact member is brought into contact with a user's ear and/or a human body around the ear; and an transducer 111 surface joined to the protecting panel 101, and configured to vibrate in a frequency band of an audible range such that vibration is not conducted from the protecting panel 101 to an auditory organ of the user via bones of a skull of the user.
摘要:
Disclosed is an input device for a capacitive touch panel, which is an input device for inputting the position on the touch panel by making the input device contact with the touch panel, including an insulating layer (11) having flexibility and optical permeability, and a conductive layer (12) having optical permeability and laminated onto the insulating layer (11), and the input device (10) is integrally formed into a cylindrical shape so that the insulating layer (11) and the conductive layer (12) become a portion to be contacted with the touch panel. Thereby, users less likely to have a sense of wear and tear of fingers, the position pointed by the input device on the touch panel is precisely recognized with ease, the accuracy of the position detected by the touch panel is improved, and input means is less likely to be lost though the input device is lost.
摘要:
If the size of an error portion within an image of the frame of interest is equal to or larger than a threshold and it is determined that no error portion exists within an image of a frame immediately before the frame of interest, a display unit (115) is caused to display the image of the frame immediately before the frame of interest as the image of the frame of interest. If the size of an error portion within the image of the frame of interest is smaller than the threshold and it is determined that an error portion exists within the image of the frame immediately before the frame of interest, the display unit (115) is caused to display a result obtained by correcting the error portion within the image of the frame of interest using a pixel group surrounding the error portion.