摘要:
A laser unit which has an improved reliability in a measured value of a power correction coefficient used to correct a laser output command. Immediately before the laser oscillator starts discharging after a power supply is turned on, the initial value of a number (or index) for carrying out a warm-up operation is set to zero. A temperature measuring device measures a temperature of a prescribed part of the laser oscillator, and it is decided whether the measured temperature has reached a predetermined temperature. When the measured temperature has reached the predetermined temperature, a normal laser oscillator start processing is executed, and a power correction coefficient is calculated/updated, thereby ending the process. When the measured temperature has not reached the predetermined temperature, the number of times of carrying out a warm-up operation is checked, and the oscillator executes the warm-up operation until the predetermined temperature is obtained within a given number of times. When the number of times of carrying out the warm-up operation exceeds the given number of times, an alarm is displayed to stop the operation of the laser oscillator. Also, an internal discharge carried out to obtain a power correction coefficient may be utilized for the warm-up operation.
摘要:
A transmission unit of a signal transmission device includes: a transmission-side detection unit that detects image information from an inputted electrical signal; a receiving unit that receives, from a reception unit, a status signal representing an arrival status of an outputted optical signal; and a control unit that controls an electrical-optical conversion unit on the basis of the detection result of the transmission-side detection unit and the status signal of the receiving unit so that the output of the optical signal is shut down in at least one of a case where image information is not included in an electrical signal and a case where an optical signal has not arrived.
摘要:
In the case that the video and audio information obtained from the digital broadcast or a digital recording medium coded according to a predetermined information processing rule is digitally transmitted, the normal reproduction and special reproduction are performed reproducibly as in the case of an analog signal processing equipment. A data reproduction transmission apparatus for reproducing the video and audio information coded according to a predetermined information processing rule provided with a decoding means 2 for decoding the coded data that includes the video and audio information, a data conversion means 3 for converting the digital data obtained from the decoding means 2 to the video and audio information that is acceptable for an analog signal processing equipment, and a data restructuring means 4 for restructuring coded data or decoded digital data that includes at lease the video and audio information to the coded data that is acceptable for a digital signal processing equipment.
摘要:
The present invention provides a thermal stable low elastic modulus material, which has high thermal stability, is little in change in dynamic characteristics such as coefficient of thermal expansion and elastic modulus within a temperature of −50° C. to 300° C., has an elastic modulus at room temperature of 2-0.01 GPa and is high in reliability of electric insulation regardless of a temperature fluctuation, and provides a semiconductor device using the same. The present invention also provides a thermal stable low elastic modulus resin composition obtained by heat-curing a mixture containing a polyimide, polyamide-imide or polyamide resin or resin precursor, whose cured product has an elastic modulus measured at −50° C. of 2-0.01 GPa, and an oligomer of an organosilicon compound having a functional group capable of causing addition reaction with an NH and/or COOH group.
摘要:
A display device having a memory property capable of maintaining a displayed information even in a state of being separated away from a power source as a result of decreasing the effect of external noise. The display device is detachably attached to a control unit that includes a drive circuit and a power source for driving the display device. The display device has a memory property and maintains the displayed image even in a state of being detached from the control unit. An input protection portion which is an electric load such as resistor, IC or capacitor is provided for the input portion leading to matrix electrodes from the connection terminals for electrically connecting the display device to the control unit. This prevents the infiltration of noise through the connection terminals and lowers a change in the displayed image.
摘要:
A molten metal transfer pipe 52 for transferring an injection sleeve 51 has a bent pipe portion 3 thereof reduced in diameter to provide a throttle part 4 attaining a pressure loss effect. A melting and holding furnace 101 with a tilting mechanism has a melting and holding furnace section 101 and an electrical lifter 113 for holding the melting and holding furnace section 101 horizontally and for tilting the melting and holding furnace 101 together with a molten metal supplying apparatus 102 upwardly about the melting chamber 104 serving as a tilting fulcrum C to hold the same in the tilted position. An ingot charging apparatus 201 includes a hood 208 mounted to a conveyor 205 for conveying each preheated magnesium ingot MA, which, at a discharge time of the preheated magnesium ingot MA and at a charge time of the same, communicates with an ingot discharge port 202a of a preheating apparatus 202 and an ingot charge port 203a of a melting and holding furnace 203a to define closed spaces 207 and 206 for allowing a discharge operation of the preheated magnesium ingot MA and a charge operation thereof, and which covers the preheated magnesium ingot MA held by an ingot chuck 204 during conveyance of the preheated magnesium ingot MA.
摘要:
Dusts containing zinc and/or lead in the form of oxides and one or more reducing agents are mixed with each other before or after being introduced into a heat treatment furnace. The mixture is heated to a given temperature range under a substantial vacuum so that the zinc and/or lead in the form of oxides are reduced to zinc and/or lead in the state of pure metals and evaporated in the furnace. The evaporated zinc and/or lead are introduced into a retrieving container also under a substantial vacuum and at a given temperature where the evaporated zinc and/or lead pure metals are condensed and retrieved.
摘要:
An electrically driven hermetic compressor comprises a hermetic casing, an electric motor unit encased in the casing, and a compression mechanism encased by the casing and drivingly connected to the electric motor unit through a crankshaft. The compression mechanism includes a cylinder, a piston reciprocatingly slidable in the cylinder, a valve plate having formed therein a suction port and a discharge port and providing valve seats around the ports, suction valve and a discharge valve cooperating with the suction and discharge ports. The cylinder, the piston and the valve plate cooperate to define a compression chamber. The compressor further has a passage system providing separate passages for a gas to be compressed and the gas after compression, and a motion converting mechanism for converting rotary motion of the crankshaft into linear reciprocating motion of the piston. A frusto-conical projection is formed on the top of the piston at a point offset from the axis of the piston so as to be receivable in the discharge port which also is offset from the axis of the piston, thus minimizing dead volume when the piston has reached its top dead center of its stroke.
摘要:
An information broadcasting method for a communication system including a plurality of stations. The communication system enables any two of the stations to communicate with one another. The communication system includes a conference trunk having at least four channels. One of the channels is an information broadcasting channel for use only in an information broadcasting operation wherein any one of the stations broadcasts information to all of the stations simultaneously via the information broadcasting channel. All other ones of the channels are conference communication channels for use in conference communication wherein any three or more of the stations communicate with one another simultaneously via any three or more of the conference communication channels. During an information broadcasting operation, any one of the stations which is receiving broadcast information from another one of the stations can transmit information to all of the stations in the system, including the station which is broadcasting information, via a vacant conference communication channel in the conference trunk, thereby engaging in bidirectional communication with the station which is broadcasting information during the information broadcasting operation.
摘要:
A method and apparatus for encoding a picture with improved prediction accuracy in predicting the basic quantization step. The apparatus for encoding a picture includes a picture data storage unit, a picture information evaluating unit, an inter-picture correlation detection unit, an orthogonal transform unit for orthogonally transforming the picture data for generating orthogonal transform coefficients, a quantization unit for quantizing the orthogonal transform coefficients produced by the orthogonal transform unit at a pre-set quantization step, an adaptive compression method selection unit and a quantization step control unit. The information quantity is evaluated from stored picture data of plural pictures, and the inter-picture correlation is detected. A picture data compression method is adaptively selected based upon the evaluated value of the information quantity and the inter-picture correlation information. The basic quantization step is predicted from the evaluated value and a pre-set compressed data quantity obtained on compressing one-picture picture data by the selected compression method and the evaluated value.