摘要:
A memory access control system for an information processing apparatus having a buffer memory and a main memory wherein when a store or access request is generated, in the case where the data block in the address to be accessed does not exist in the buffer memory, the store requested data from a data register is written into the buffer memory before the first data in the data block read out from the main memory is written into the buffer memory, and the data register is released to receive the next request.
摘要:
When an IOP is transferring data at the maximal throughput because of the fact that the input-output processor (IOP) has issued a next request under a state when the request buffers are full of requests from the IOP at least a part of the requests from the instruction processor (IP) is inhibited. Inhibition of the requests from the IP is released when the pitch of the requests from the IOP reaches a predetermined period or more. When the IOP is transferring data at the maximal throughput in a system having a cache memory, access to the main memory by the IP is inhibited in case requested data does not exist in the cache memory.
摘要:
In a method of making a multilayer wiring board having a substrate and a wiring pattern formed in the substrate, base films are stacked in a predetermined direction to form a stacked film structure. Each base film includes thermoplastic resin. Pressure and heat are applied to the stacked film structure from its both sides in the stacked direction so that the base films are joined together to form the substrate. At least one of the base films is a combined film including a fiber sheet. Both sides of the fiber sheet are covered with the thermoplastic resin in such a manner that air space remains in the fiber sheet.
摘要:
A method for filling a fluidized material into a hole having a bottom, the hole disposed on one surface of a sheet member, the method includes the steps of: depressurizing a first closed space, which is formed on the one surface of the sheet member; depressurizing a second closed space, which is adjacent to the first closed space and accumulates the fluidized material; displacing the hole together with the sheet member to the second closed space, the hole depressurized in the first closed space; applying the fluidized material on the surface of the sheet member; and filling the applied fluidized material into the hole.
摘要:
After an Si wafer is anisotropically etched through an etching mask having an opening in an anisotropically etching solution, an etching face of the Si wafer emerged by the anisotropic etching is subjected to anodic oxidation by applying a positive voltage for anodic oxidation on the Si wafer. As a result, the etching face of the Si wafer is isotropically etched due to the anodic oxidation in the anisotropic etching solution. By the isotropic etching thus performed, a sharp corner formed at an end portion of a recess portion formed in the Si wafer by the anisotropic etching, is rounded. Because the isotropic etching reaction progresses very slowly in comparison with the anisotropic etching, control of the etching can be made easy and accurately. As a result, the thickness of the diaphragm can be prevented from being dispersed.
摘要:
In a printed circuit board manufacturing equipment, a pressing die includes a first pressing part, a second pressing part, and a frame part. A buffer member is disposed between a first surface of a laminated body and the first pressing part. The second pressing part has a portion facing a second surface of the laminated body and a portion facing the buffer member. The frame part surrounds a whole area of a side surface of the buffer member. Before pressing and heating, the laminated body, the second pressing part, and the buffer member define an escape space therebetween for escaping the buffer member deformed due to the pressing. A lip protrudes from the frame part toward the laminated body. The lip is deformed following the deformation of the buffer member and comes in contact with a surface of the second pressing part facing the buffer member.
摘要:
The present invention provides a recycler that recycles a printed circuit board for separating and retrieving a metallic material, which includes a printed metallic material, and an insulating material, both composing the printed circuit board. The insulating body base of the printed circuit board as the waste printed circuit board can be a thermoplastic resin or a mixture of thermoplastic resin and inorganic loading material. The recycler includes a pressuring device that pressurizes the waste printed circuit board, a heater that heats the waste printed circuit board to a predetermined temperature at which the waste printed circuit board is at least softened, and a filter that filters the resin material from the waste printed circuit board. The heater can be maintain the filter at the predetermined temperature provided by the heater.
摘要:
A workpiece holding method and holding system able to shorten the workpiece attachment/detachment time, wherein pressurized air is circulated through a nozzle of an ejector unit of a chuck at all times to make the inside of a suction chamber a negative pressure before chucking a workpiece, completion of chucking is detected based on a pressure value detected by a pressure sensor after chucking the workpiece, and the workpiece is unchucked by having a valve close an exhaust port to raise the pressure inside an exhaust chamber and introducing pressurized air from the ejector unit to the suction chamber.
摘要:
The present invention provides a method and apparatus of recycling a printed circuit board for separating and retrieving a metallic material, which includes a printed metallic material, and an insulating material, both composing the printed circuit board. Both the metallic material and the insulating material, which are separated and retrieved, are possible for recycling. In the method for recycling the printed circuit board, hot filtration equipment 4a and resin-metal separation equipment 51 are used in hot filtration process P400. The waste printed circuit board 1 is heated and force-filtered so that only the insulating material 1a pass through the filter. Then, the insulating material 1a and the metallic material 1b are separated and retrieved. It is preferred that the insulating body base 23 of the printed circuit board 100 as the waste printed circuit board is made of thermoplastic resin or a mixture of thermoplastic resin and inorganic loading material. As a result, when the retrieved metallic material and the retrieved insulating material amount to necessities of recycling respectively, both the metallic material and the insulating material are possible for recycling.
摘要:
The present invention provides a method and apparatus of recycling a printed circuit board for separating and retrieving a metallic material, which includes a printed metallic material, and an insulating material, both composing the printed circuit board. Both the metallic material and the insulating material, which are separated and retrieved, are possible for recycling. In the method for recycling the printed circuit board, hot filtration equipment 4a and resin-metal separation equipment 51 are used in hot filtration process P400. The waste printed circuit board 1 is heated and force-filtered so that only the insulating material 1a pass through the filter. Then, the insulating material 1a and the metallic material 1b are separated and retrieved. It is preferred that the insulating body base 23 of the printed circuit board 100 as the waste printed circuit board is made of thermoplastic resin or a mixture of thermoplastic resin and inorganic loading material. As a result, when the retrieved metallic material and the retrieved insulating material amount to necessities of recycling respectively, both the metallic material and the insulating material are possible for recycling.