摘要:
There are provided a transmission/reception switching circuit which is small in insertion loss and harmonic distortion and allows an increase in the output power of a power amplifier and an electronic component for communication on which the transmission/reception switching circuit is mounted. As an element composing a transmission/reception switching circuit in a wireless communication system, series-connected FETs or a multi-gate FET are used in place of a diode. Gate resistors connected between the individual gate terminals and a control terminal are designed to have resistance values which become progressively smaller from the gate to which a highest voltage is applied toward the gate to which a lowest voltage is applied.
摘要:
An inspection display signal is supplied to a pixel to be inspected so that a light emitting element operates, and a current flowing through the light emitting element is detected. An element current detection signal having a number of bits which is less than a number of bits of a display data signal generated to be supplied to each pixel based on a video signal is stored in a memory according to a characteristic such as a change range and precision of the obtained element current and is used for variation correction. For example, only bit positions in which a value may change are stored in consideration of the change allowance range of the ON-current detection signal, so that a storage capacity to the memory is reduced without affecting correction precision of variation.
摘要:
There is provided a power-off system including a connector (10) connected at one end thereof to a system power line (A) and at the other end to an electric appliance (10) and which connects or disconnects a power supplied from the system power line (A) to the electric appliance (100), a sensor (11) to detect environmental information, and a signal transmitter (12) to generate a predetermined signal on the basis of the environmental information detected by the sensor (11) and send the generated predetermined signal to the connector (10). For example, the sensor (11) having detected an earthquake will send an quake signal to the signal transmitter (12), and the latter will open the circuit of the connector (10) to prevent a fire possibly caused by the earthquake.
摘要:
A vehicle door mirror is configured to be mounted on outside of a vehicle in a retractable manner from a set position to a retracted position. When moving to the set position or the retracted position, the vehicle door mirror is moved at a first speed from a start position to a position right before a stop position, and is further moved from the position right before the stop position to the stop position at a second speed that is slower than the first speed.
摘要:
A dark spot defect caused by short-circuiting in an electroluminescence element is detected based on an emission brightness or a current flowing through the electroluminescence element when an element driving transistor which controls a drive current supplied to the electroluminescence element is operated in its linear operating region and the electroluminescence element is set to an emission level. Prior to the dark spot defect inspection, the dark spot defect is screened by applying a reverse bias voltage between an anode and a cathode of the electroluminescence element. With this process, disappearance of the dark spot defect at a later time resulting in an impossibility of laser repairing or the like is prevented, and inspection and repairing efficiencies are improved. A dim spot defect caused by a characteristic variation of the element driving transistor is detected based on a current flowing through the electroluminescence element or an emission brightness when the element driving transistor is operated in its saturation operating region and the electroluminescence element is set to an emission level.
摘要:
A wireless communication apparatus is equipped with a plurality of antennas. A switch leads a received signal by way of an antenna selected according to an antenna switching signal to a demodulator unit. Software installed in a MAC unit generates a first switching signal. A diversity control unit generates a second switching signal by the built-in hardware circuit. The first switching signal is used as an antenna switching signal during a packet receiving ready period, while the second switching signal is used as an antenna switching signal during a period for receiving a packet.
摘要:
A structure of attaching a weather strip includes a roll sash of a sash door, and a weather strip attached to an outer circumferential end face of the roll sash, a hollow seal portion on the vehicle interior side and a seal lip portion on the vehicle exterior side of the weather strip formed integrated with each other into one body, the hollow seal portion and the seal lip portion coming into elastic contact with a vehicle body to seal a portion between the sash door and the vehicle body.
摘要:
A switching element is provided that realizes an stabilize a potential between the gates of the multi-gates without an increase in the insertion loss, and an antenna switch circuit and a radio frequency module each using the switch element. The switching element includes two ohmic electrodes 39, 40 formed on a semiconductor substrate, at least two gate electrodes 41, 42 disposed between the two ohmic electrodes, and a conductive region 45 disposed between the adjacent gate electrodes among the at least two gate electrodes, a field effective transistor being structured by the two ohmic electrodes, the at least two gate electrodes, and the conductive region. The conductive region has a wider portion that is wider in width than the conductive region interposed between the adjacent gate electrodes on one end thereof. The distance between the adjacent gate electrodes is narrower than the width of the wider portion. Resistors 44, 46 are connected in series between the two ohmic electrodes through the wider portion.
摘要:
An actuating assembly for an automotive door latch device comprises a housing that operatively installs therein basic elements that are commonly used in an override function unit and a child proof function unit. The override function unit has a function wherein a manipulation of an inside door handle induces cancellation of the engaged condition of the latch means irrespective of the condition of the locking/unlocking means. The child proof function unit has a function wherein the manipulation of the inside door handle is made inoperative irrespective of the condition of the locking/unlocking means, thereby to make the cancellation of the engaged condition of the latch means impossible. The actuating assembly further comprises a cover that is coupled to the housing and holds thereon a selected element that is exclusively used in either one of the override function unit and the child proof function unit.
摘要:
An object of the present invention is to provide an antenna switch circuit that effectively reduces signal leakages at a cross point even at higher operating frequencies and a high frequency module containing said antenna switch module. The antenna switch circuit comprises: a high frequency signal line to transmit a transmitting signal to be input to transmitting terminals to an antenna terminal and also to transmit a receiving signal to be input to the antenna terminal to receiving terminals; switches that are connected in the middle of the high frequency signal line between transmitting terminal and antenna terminal; switches that are connected in the middle of the high frequency signal line between receiving terminal and antenna terminal; and signal lines to transmit control signals for controlling turning on and off of the switches.