Abstract: The present invention aims at providing a sophisticated segregation reducing technique which a conventional technique cannot achieve by finding the relationship between the casting structure and the segregation of components at the time of solidification and the heat treatment conditions. That is, the present invention aims at providing material for shadow masks which exhibits excellent quality with respect to streaks. A material for a shadow mask of the present invention is formed of a casting slab for preparing the shadow mask which comprises an Ni—Fe alloy containing 30 to 45% of Ni. The casting slab has a cast structure comprising a columnar crystal and/or a chill crystal in an amount of 99% or more. In particular, it is preferred that the casting slab contains no equiaxed crystal.

Abstract: A material for shadow mask having the following composition of components: C≦0.0008 wt %, Si≦0.03 wt %, Mn:0.1 to 0.5 wt %, P≦0.02 wt %, S≦0.02 wt %, Al:0.01 to 0.07 wt %, N≦0.0030 wt %, B: an amount satisfying the formula: 5 ppm≦B−11/14×N≦30 ppm, balance: Fe and inevitable impurities; a method for producing the material; a shadow mask using the material (cold rolled steel sheet); and an image receiving tube equipped with the shadow mask. The material has excellent etching characteristics, which are uniform within the same coil, and excellent press formability.

Abstract: A stretched mask having a high tensile strength and favorable high-temperature creep properties and free from tape twist, and a material for the stretched mask. A low-carbon steel sheet containing 70 ppm to 170 ppm of nitrogen on a weight basis is heat-treated at a temperature at which recrystallization does not take place. The heat-treated material is provided with a resist pattern for forming apertures and subjected to etching to form apertures.

Abstract: A memory control system has a replacement detection/notification circuit for detecting occurrence of replacement of dirty entry in a cache and informing a memory controller of the detection, and a state control circuit for precharging the currently active page in a main memory when the memory controller is informed of the detection and a preceding access to the main memory attendant upon the replacement of dirty entry is completed. By precharging the active page in the main memory to return to the idle state when the preceding access attendant upon the replacement of dirty entry is completed, the succeeding access can be done only by activating the aimed page probably different from the above page. It is thereby obviated to return the activated page due to the preceding access to the idle state after a page miss occurs in the succeeding access.

Abstract: A memory control system has a replacement detection/notification circuit for detecting occurrence of replacement of dirty entry in a cache and informing a memory controller of the detection, and a state control circuit for precharging the currently active page in a main memory when the memory controller is informed of the detection and a preceding access to the main memory attendant upon the replacement of dirty entry is completed. By precharging the active page in the main memory to return to the idle state when the preceding access attendant upon the replacement of dirty entry is completed, the succeeding access can be done only by activating the aimed page probably different from the above page. It is thereby obviated to return the activated page due to the preceding access to the idle state after a page miss occurs in the succeeding access.

Abstract: A reciprocating compressor of a type includes a cylinder block having a plurality of bores disposed in parallel with each other, a valve plate having suction ports corresponding to the respective bores, a cylinder head for closing the outer end of the cylinder block through the valve plate which is held between the cylinder head and the cylinder block and on which suction valves and discharge valves are mounted, a suction chamber formed in the cylinder head adjacent to a refrigerant introduction port, and pistons inserted into the respective bores so as to reciprocate in a predetermined phase difference. In the reciprocating compressor, partitions are disposed in the cylinder head around the outer periphery of the suction chamber for introducing suction gas into the respective bores.

Abstract: In a reciprocating compressor in which a suction valve (21) of a leaf valve is placed between a valve plate (16) and a cylinder block (12) to open and close a suction port (18) formed in the valve plate, the suction valve is previously bent to open the suction port in an initial state when the compressor is stopped. The cylinder block has a cylinder bore (11) with which the suction port is communicated and into which a piston (17) is inserted. When the piston performs reciprocating movement in the cylinder bore, the suction valve opens and closes the suction port in response to the reciprocating movement in a pulsation reducing manner.

Abstract: A reciprocating compressor of a type includes a cylinder block having a plurality of bores disposed in parallel with each other, a valve plate having suction ports corresponding to the respective bores, a cylinder head for closing the outer end of the cylinder block through the valve plate which is held between the cylinder head and the cylinder block and on which suction valves and discharge valves are mounted, a suction chamber formed in the cylinder head adjacent to a refrigerant introduction port, and pistons inserted into the respective bores so as to reciprocate in a predetermined phase difference. In the reciprocating compressor, partitions are disposed in the cylinder head around the outer periphery of the suction chamber for introducing suction gas into the respective bores.

Abstract: A purpose of the present invention is to provide a resin coated steel sheet with excellent forming, anti surface roughness and corrosion resistances suitable for a thinned, deep drawn and ironed can and a steel sheet therefor, particularly to material suitable for a container for beverage such as pop drink, coffee, tea, fruit juice and so on. Therefore, the material according to the present invention is a steel sheet and a resin covered steel sheet suitable for a thinned, deep-drawn and ironed can comprising Carbon in the range of 0.008% to 0.08%, Silicon of equal or less than 0.05%, Manganese of equal or less than 0.9%, Phosphorous of equal or less than 0.04%, Sulfur of equal or less than 0.04%, Aluminum of equal or less than 0.03%, Nitrogen of equal or less than 0.

Abstract: A computer which performs parallel processing of a plurality of programs in a time-division fashion includes hardware resources divided into a plurality of areas, an evacuation unit which records identification information identifying a first program, and evacuates information stored in an area of said plurality of areas if the area is necessary for execution of a second program and is being used for execution of the first program, and a restoration unit which restores the evacuated information to the area based on the identification information when the second program comes to a halt or to an end.

Abstract: An invar alloy steel sheet for shadow masks is provided which has improved etchability, an economical production method, a shadow mask made of the invar alloy steel sheet, and a color picture tube which incorporates the shadow mask. The invar alloy steel sheet is produced by hot working an alloy slab consisting of 33 top 40 wt % nickel with the balance being iron, and then subjecting the slab to a primary cold rolling at a rolling reduction ratio of not more than 80%, annealing at a temperature of at least 550° C., and subjecting the slab to a secondary cold rolling at a rolling reduction ratio of not more than 50%. The invar alloy steel sheet has a percentage of {100} texture of 60 to 80%.

Abstract: A stretched mask having a high tensile strength and favorable high-temperature creep properties and free from tape twist, and a material for the stretched mask. A low-carbon steel sheet containing 70 ppm to 170 ppm of nitrogen on a weight basis is heat-treated at a temperature at which recrystallization does not take place. The heat-treated material is provided with a resist pattern for forming apertures and subjected to etching to form apertures.

Abstract: In a reciprocating compressor in which a suction valve (21) of a leaf valve is placed between a valve plate (16) and a cylinder block (12) to open and close a suction port (18) formed in the valve plate, the suction valve is previously bent to open the suction port in an initial state when the compressor is stopped. The cylinder block has a cylinder bore (11) with which the suction port is communicated and into which a piston (17) is inserted. When the piston performs reciprocating movement in the cylinder bore, the suction valve opens and closes the suction port in response to the reciprocating movement in a pulsation reducing manner.

Abstract: A stretched mask having a high tensile strength and favorable high-temperature creep properties and free from tape twist, and a material for the stretched mask. A low-carbon steel sheet containing 70 ppm to 170 ppm of nitrogen on a weight basis is heat-treated at a temperature at which recrystallization does not take place. The heat-treated material is provided with a resist pattern for forming apertures and subjected to etching to form apertures.

Abstract: A hierarchical memory system having a cache memory for storing a portion of data stored in a main memory. The cache memory is divided into hierarchically ordered primary and secondary cache memories. The primary cache memory being connected to a processor. The larger secondary cache memory being connected to the primary cache memory and to a bus connected to the main memory. When a cache miss-hit is made in the secondary cache memory, at the time of access by the processing unit, the secondary cache memory notifies the primary cache memory of an address of a replacement entry prior to seeking a data transfer. The primary cache memory, when it has an entry corresponding to the replacement entry, makes the corresponding entry the replacement entry.

Abstract: A vector processor including a vector register having a plurality of banks storing a plurality of elements of data, a plurality of vector operation units to perform a plurality of vector operations on the plurality of elements of data, a single mask register to store mask data indicating whether to mask the elements of data and controlling the vector operations performed on the elements of data by the plurality of vector operation units, a single decoder device, connected to the mask register, for generating a read address and a write address of the mask register, a serial-to-parallel converting device for receiving serial mask data from a second bus connected to the plurality of vector operation units, for converting the serial mask data into parallel mask data, and for writing the parallel mask data into the mask register at the write address generated by the decoder device, and a parallel-to-serial converting device for reading parallel mask data from the mask register at the read address generated by the

Abstract: A cache uses A bits of an offset portion which are not subjected to the address translation of the logical address and B bits of the portion other than the offset portion, which are subjected to an address translation. It has an address monitor portion having a tag portion corresponding to the tag portion of the CPU using only A bits of the offset portion of the set address which are used as the set address in the cache and having a 2.sup.B .times.N-way set associative structure and a portion for making said tag portion of the cache correspond to said tag portion of the address monitor portion, thereby performing management of N address stored in the tag portion of the address monitor portion and transmitting the result of the management of the address to the cache and for invalidating the corresponding recording portion of the tag in the cache.

Abstract: A cache memory, and a data processor including the cache memory, for processing at least one variable length instruction from a memory and outputting processed information to a control unit, such as a central processing unit (CPU). The cache memory includes a unit for decoding an instruction length of a variable length instruction from the memory, and a unit for storing the variable length instruction from the memory, together with the decoded instruction length information. The variable length instruction and the instruction length information thereof are fed to the control unit. Accordingly, the cache memory enables the control unit to simultaneously decode a plurality of variable length instructions and thus realize high speed processing.

Abstract: A processor which executes instructions using pipeline processing having an effective address calculation stage and an operation stage, at least one stage existing between the effective address calculation stage and the operation stage. A register temporarily stores data. A pipeline latch part includes a respective latch provided for, and respectfully corresponding to, each stage between the effective address calculation stage and the operation stage and includes a respective latch corresponding to the operation stage. During the effective address calculation stage, the pipeline latch part receives data stored in the register and transfers the received data through the each respective latch in accordance with the execution of instructions to provide the data to the respective latch corresponding to the operation stage when the operation stage performs an operation.

Abstract: A bit field logic operation unit which performs a logic operation accompanied by a masking operation comprises a logic operation part, a mask pattern generation part, and a bit map operation part. All parts are constituted by dynamic circuit constructions where the processes are performed in a preset period and an active period. The preset periods of the logic operation part and the mask pattern generation part are carried out simultaneously, and the active periods of the logic operation part and the mask pattern generation part and the preset period of the bit map operation part are carried out simultaneously.