Abstract: In a data compression method of compressing data including at least one of a character and a number, the data is converted into character string data composed of 0s and 1s. Each of the 0s and 1s included in the character string data is treated as 1-bit data, and the 1-bit data is arranged in a data region having a two-dimensional array. Lossless compression of the data arranged in the data region is performed by using an image processing method.

Abstract: In a data compression method of compressing data including at least one of a character and a number, the data is converted into character string data composed of 0s and 1s. Each of the 0s and 1s included in the character string data is treated as 1-bit data, and the 1-bit data is arranged in a data region having a two-dimensional array. Lossless compression of the data arranged in the data region is performed by using an image processing method.

Abstract: A method for performing arc welding includes steps of: preparing two work pieces each having fused portion, being butted against one another; preparing a welding electrode which is a non-consumable type electrode used for performing arc welding to the two work pieces, the welding electrode being disposed to face the two work pieces; applying welding current to the welding electrode so as to have the two work pieces welded; and performing a current changing step to change an amount of the welding current to be decreased so as to have a fused portion of at least one of the two work pieces move toward the other work piece for adhesion to the fused portion of the other work piece or for adhesion to the other work piece itself.

Abstract: A method for performing arc welding includes steps of: preparing two work pieces each having fused portion, being butted against one another; preparing a welding electrode which is a non-consumable type electrode used for performing arc welding to the two work pieces, the welding electrode being disposed to face the two work pieces; applying welding current to the welding electrode so as to have the two work pieces welded; and performing a current changing step to change an amount of the welding current to be decreased so as to have a fused portion of at least one of the two work pieces move toward the other work piece for adhesion to the fused portion of the other work piece or for adhesion to the other work piece itself.

Abstract: Acceptance/rejection of a deposition condition is judged by detecting an exothermic quantity of a deposition portion 3 by using an infrared beam sensor 2 during laser deposition of a resin material 4 having transmissibility to a laser beam and a resin material 5 having absorptivity to the laser beam L. The exothermic condition of the deposition portion is detected by using an infrared beam sensor matching with a wavelength of an infrared beam having a high transmission factor from infrared beam transmission characteristics of the transmissible resin to judge whether or not suitable energy is applied to the deposition portion and whether or not the deposition portion is formed. The exothermic quantity of the transmissible resin is detected by an infrared beam sensor 2A to judge acceptance or rejection of the deposition portion even when the applied energy changes.

Abstract: A fusing quality control method and apparatus are disclosed in which the film detachment process is accurately controlled by monitoring the surface temperature of a terminal and detecting the timing at which the temperature provisionally drops and then rises again. The thermal caulking process, on the other hand, is accurately controlled by accumulating the terminal temperature to determine the heat amount charged into the film covered electric wire 3 and by monitoring whether the accumulated heat amount has entered a preset range or not.

Abstract: A method of controlling fusing by executing a process of peeling a coating by correspondingly controlling the electric current flowing into a coated electric wire 3 through a bent terminal 2 while monitoring the surface temperature of the bent terminal 2 at the time of welding a work W that has the coated electric wire 3 held by the bent terminal 2 by flowing the electric current into the coated electric wire 3 through the bent terminal 2; and a process of thermal caulking by correspondingly controlling the electric current flowing into the coated electric wire 3 through the bent terminal 2 while monitoring the quantity of heat generated in the work W.

Abstract: An apparatus for control of resistance brazing is provided in a resistance brazing apparatus which grips parts of a weld object between which a brazing material is interposed between a pair of electrodes, applies pressure to the parts of the weld object, and feeds power to said electrodes in that state for resistance brazing, including a power feed time measurement unit measuring a power feed time to said electrodes required from when an amount of displacement of a distance between the pair of electrodes reaches a first amount of displacement to when it reaches a second amount of displacement and a control unit decreasing the amount of power feed to the pair of electrodes when the power feed time is a lower limit threshold value or less and increasing the amount of power feed to the electrodes when the power feed time is the upper limit threshold value or more.

Abstract: An apparatus for judgment of the quality of resistance brazing provided in a resistance brazing apparatus gripping a weld object between which a brazing material is interposed between a pair of electrodes, applying pressure to copper parts, and feeding power to the electrodes in that state, having a control unit controlling the amount of heat generated at the pair of electrodes during resistance brazing, a power feed time measurement unit measuring a power feed time to electrodes required from when an amount of displacement of the distance between the pair of electrodes reaches a first amount of displacement to a second amount of displacement, and a quality judgment unit judging there was a brazing material if the power feed time is a predetermined threshold value or less and judging there was no brazing material if the power feed time is larger than the predetermined threshold value.

Abstract: Acceptance/rejection of a deposition condition is judged by detecting an exothermic quantity of a deposition portion 3 by using an infrared beam sensor 2 during laser deposition of a resin material 4 having transmissibility to a laser beam and a resin material 5 having absorptivity to the laser beam L. The exothermic condition of the deposition portion is detected by using an infrared beam sensor matching with a wavelength of an infrared beam having a high transmission factor from infrared beam transmission characteristics of the transmissible resin to judge whether or not suitable energy is applied to the deposition portion and whether or not the deposition portion is formed. The exothermic quantity of the transmissible resin is detected by an infrared beam sensor 2A to judge acceptance or rejection of the deposition portion even when the applied energy changes.

Abstract: A control apparatus for resistance welding includes a time measuring device for measuring an energization time of a welding current, the energization time being required by a given electrode displacement during welding between an electrical conductive weld member and a member to be welded which are arranged between two electrodes. A time difference calculating device is operative for calculating a time difference between the energization time measured by the time measuring device and a preset target energization time. A feedback control device is operative for correctively increasing and decreasing a welding current, which occurs at a next weld timing, on the basis of the time difference calculated by the time difference calculating device.

Abstract: A method for welding together electrically conductive members, comprises detecting step for detecting a removal of an electrically insulating member between a first electrically conductive member and a second electrically conductive member, and welding step for welding together the first electrically conductive member and the second electrically conductive member by an electricity through them to be fixed to each other, after the removal of the electrically insulating member therebetween is detected.