摘要:
To enable a power to the computer to be shut down in a simple configuration and independently of the status of the computer. The power switch 46 is set at the normal position while the computer 10 is operating. Each of the power, reset, and function signals is thus on the high level (A). When the function key 42A is pressed in that status, the function signal can be shifted to a low level signal so as to validate only the key 42A (B). While the power switch 46 is shifted to a pointed position and the key 42A is not pressed, only the power signal is validated, thus a power-on or power-off command can be issued (C). If the power switch 46 is set at a pointed position and the key 42A is pressed, then the level of the reset signal becomes low, thereby the reset signal is validated with the key 42A (D). Consequently, the power to the computer can be shut down forcibly if the power switch 46 is set at a pointed position and the key 42A is pressed, regardless of the status of the computer 10 operation.
摘要:
According to this dynamic pressure groove processing method, dynamic pressure grooves are formed in specified regions by electrochemical machining with the electrode of an electrode tool put close to a workpiece in the initial stage. Through this electrochemical machining, corners of land portions adjacent to the dynamic pressure grooves can be curved and smoothed. Next, by subjecting the workpiece to electrochemical machining with the electrode of the electrode tool put away from the workpiece, the land portions are to undergo weak electrochemical machining. Surface roughness of surfaces of the land portions can be reduced, and the curved corners of the land portions can be made smoother at the same time. Therefore, the abrasion resistance characteristic of the dynamic pressure grooves can be improved further than that achieved by the conventional electrochemical machining, allowing the abrasion resistance characteristic and reliability to be sufficiently improved.
摘要:
Upon receipt of a message in a state of waiting to receive the message, the received message is stored in a RAM, and a message receipt information is performed. When a user presses down a push switch for the message receipt information, the received message is displayed on a LCD. At this time, when it is impossible to display the received message on the LCD at a time because of the long received message, a jog switch is manipulated by a user. When the user manipulates the jog switch 12, the message displayed on the LCD is scrolled depending on the direction of rotation of the jog switch and the quantity of rotation thereof. Of the scrolled message, the portion of the message before scrolling is underlined and displayed on the LCD.
摘要:
A telephone hand-free apparatus comprises a housing; a telephone receiving case installed in the housing, the telephone receiving case being so sized and constructed as to receive therein a portable telephone; a board on which a control circuit is arranged, the board being installed in the housing; an external microphone operatively connected to the control circuit and exposed to the outside of the housing; an external speaker operatively connected to the control circuit and installed in the housing; a connection cable extending from the control circuit, so that when the connection cable is connected to a socket of the portable telephone, the external microphone and the external speaker become operative in place of a microphone and a speaker of the portable telephone; and an electric power source which energizes the control circuit. The control circuit includes a muting section which makes the external microphone inoperative while the control circuit is receiving a voice signal from the portable telephone through the connection cable.
摘要:
A pager includes a power supply that supplies a plurality of power sources of various voltages, a switch that selects a power source supplied by the power supply and supplies the power source to a frequency converter, and a controller that shifts the selection of the switch into another power source of higher voltage when extraction of an ID from a signal demodulated by a demodulator is impossible. The controller instructs the switch to select a power source of the lowest voltage in the initial state and after a predetermined time from the switching into the higher voltage power source. Signal distortion in the frequency converter, a factor causing intermodulation, is prevented by switching the power source voltage of the frequency converter. Deterioration of the possibility of reception due to intermodulation in the frequency converter is thereby prevented. The switch is returned to its initial state after a predetermined time and power consumption of the pager is reduced. The possibility of reception is improved even more if an attenuator is provided in front of an amplifier.
摘要:
In a surface-emitting laser comprising an active region which includes a light emitting layer and two mirrors which sandwich the active region, at least one of the two mirrors has a distributed Bragg reflector structure which comprises a plurality of first layers including aluminum and a plurality of second layers different from the first layers. At least one selected layer of the first layers has a selective oxide region including aluminum and a core semiconductor region surrounded by the selective oxide region.
摘要:
A portable electronic device has a construction in which a first housing and a second housing are capable of being opened and closed and a display is mounted on an inner side of the first housing. A partial display area of the display is in a visible state even if the second housing is closed, and the full display area becomes in a visible state when the second housing is opened. An open/close state of the housings is detected by an open/close detector mounted on the first housing or the second housing. It may be detected by a user operating a predetermined key. According to the detected open/close state, a displaying area of the information is changed between the partial display area and the full display area. At the open state, the information is displayed in the full display area. At the closed state, the information is displayed in the partial display area.
摘要:
An apparatus for detecting contact between a contact detection member and a rotating body such as a grinding wheel rotably carried on a wheel head which is movable toward the contact detection member in a grinding machine for example. The apparatus comprises an AE sensor, a rectangular pulse generator, a sampling circuit and a processing device such as a microcomputer. The AE sensor generates an electric signal in response to vibration of the contact detection member. The rectangular pulse generator outputs a rectangular pulse whose duration corresponds to that of vibration. The sampling circuit delivers to the processing device an output indicating the duration of the rectangular pulse. The processing device processes the output delivered thereto so as to decide the occurrence of an actual contact between the rotating body and the contact detection member.
摘要:
An optical semiconductor device is disclosed which includes a semiconductor laser having at least an active layer, reflecting means formed on the semiconductor laser for reflecting internal feedback light generated from the semiconductor laser and at least two phototransistors formed on the reflecting means for detecting light having a wavelength substantially identical to that of laser light oscillated from the active layer.
摘要:
Graphic data of design objects designated by an input device are retrieved from a design object data memory and displayed on a display device. A restrictive item applied to the design object displayed on the display device and redesignated by the input device is read from the design object data memory. Specification data of the designated design objects are also read from the design object data memory. A condition part of the design reference is made based on the redesignated design object and the selected specification data, and an end portion of the design reference is made based on the redesignated design object, the selected restrictive item and a reference value entered by the input device. The design reference including the condition part and the end portion is displayed on the display device and stored into a design reference memory.