Abstract: A rotary storage device includes a plurality of disk units, an upper-level interface circuit, a cache controller, a cache memory, and a control processor. In each disk unit, the storage area of each disk is subdivided into an ordinary user data area and a secondary cache data storage area including a group of consecutive cylinders. Data overflowed from the cache memory is sequentially written in the secondary cache data storage area so as to be later transferred therefrom to areas of the user data area according to addresses inherent thereto when traffic of upper-level input/output processing is relatively low. In the case of when data is sought to be accessed in the cache memory during a data read operation, access operations are performed first to the secondary cache data storage area and then to the user data area.

Abstract: A ultra thin resin mold semiconductor device can be provided. A resin mold type semiconductor device is arranged so that a semiconductor chip is disposed within a range of the thickness of a lead frame and sealed with a resin mold, that the thickness of the semiconductor device is defined by the thickness of the lead frame, and that an upper surface, a lower surface and a side surface of a terminal portion formed by the lead frame are exposed from the surface of the resin mold.

Abstract: A magnetic disk recording and reproducing apparatus including a unit for inserting an error correcting code relating to control information in the control information, the control information relating to data, a recording control unit for recording the control information and the data in a recording area of a magnetic disk, the recording area having a plurality of sectors, each of the sectors having an ID area for recording the control information and a data area for recording the data, the data area corresponding to the ID area and being provided adjacent to and behind the ID area in the same sector as the ID area, and an error correcting unit for correcting errors in the control information in the ID area using the error correcting code before the data in the data area corresponding to the ID area and provided in the same sector as the ID area is read or recorded.

Abstract: A method of gelation of a photographic emulsion, oil in water emulsion, or a gelatin-containing solution comprising continuously rapidly cooling the photographic emulsion, oil in water emulsion, or the gelatin-containing solution, which has good thermal efficiency and requires no adjustment of the amount of water contained in the rapidly cooled product prior to use, and a unit therefor comprising a static mixer-installed double pipe for rapidly cooling the photographic emulsion, oil in water emulsion, or the gelatin-containing solution by a conduction type heat exchange system, and a double pipe without static mixer for conveying the rapidly cooled product to a storage vessel while avoiding adhesion of the rapidly cooled product transformed into a gel state to the inside surface of the inner pipe of the double pipe by warming the inner pipe with water kept at 30.degree. C., although transformation of the rapidly cooled product to a gel state successively proceeds in an inner portion of the inner pipe.

Abstract: A gate portion constituting a gate of a resin molding die is made of a hard alloy having a hardness greater than the predetermined hardness in the iron-based hard alloy used to form a cavity block and a center block. Opposing surfaces of the cavity block halves include a polytetrafluoroethylene layer at least at the portions thereof which contact portions of the lead frame in a semiconductor encapsulation molding apparatus.

Abstract: A recording apparatus includes a plurality of ECC units operating selectively and independently. A medium access unit reads data from a recording medium in a read mode, and writes data from a host device to the recording medium in a write mode. The data read out from the recording medium contains a reproduction data and a medium reproduction check symbol added to the reproduction data, and data written contains a recording data and a medium recording check symbol added to the recording data. The reproduction data or the recording data is stored in a buffer. In a read mode, the reproduction data from the medium access unit is transferred to the host device through the buffer and in the write mode, the recording data from the host device is transferred to the medium access unit through the buffer.

Abstract: A cache control method and a rotary storage device are capable at a low cost, of improving the hit rate and minimizing the processing time in the event of a miss hit. The rotary storage devices includes a plurality of disk units, an upper-level interface circuit, a cache controller, a cache memory, and a control processor. In each disk unit, the storage area of each disk is subdivided into an ordinary user data area and a secondary cache data storage area including a group of consecutive cylinders. Data which has overflowed from the cache memory is sequentially written in the secondary cache data storage area so as to be later transferred therefrom to areas of the user data area according to addresses inherent thereto when traffic of upper-level input/output processing is relatively low. In the case of a miss hit of the cache memory during a data read operation, access operations are performed first to the secondary cache data storage area and then to the user data area.

Abstract: A data transfer control apparatus for communicating data between a host device and an input/output device through a main buffer memory for temporarily holding the data, wherein a sub-buffer memory is disposed at least either between the main buffer memory and the host device or between the main buffer memory and the input/output device for temporarily storing the data, the amount of data stored in the sub-buffer memory is detected, access requests to the main buffer memory on the side of the host device or the input/output device are outputted in accordance with the detected data amount, and one of the access requests to the main buffer memory is selected in accordance with the priority order to access the main buffer memory on the basis of the selected access request.

Abstract: A plasma treatment method and system allowing the plasma intensity to be controllably distributed perpendicularly to the inner wall and ensuring effective and uniform treatment in the case of executing plasma cleaning, plasma CVD, RIE or the like. In the plasma treatment where plasma is generated within a chamber 1 for plasma treatment, magnetic field 31 is applied perpendicularly to the inner wall of the chamber to produce plasma whose intensity is directed perpendicularly to the inner wall of the chamber or in parallel with the surface to be treated. Further, the magnetic filed 31 rendered into a revolving field 32 may be applied to rotate the plasma to accomplish a uniform and effective treatment.

Abstract: Disclosed is a semiconductor device comprising a lead frame which includes a metal layer forming an outer lead, a thin metal layer forming an inner lead, an intermediate layer held between the thick metal layer and the thin metal layer for forming a connection portion between the outer lead and the inner lead and a bump positioned at the extreme end of the lead frame, whereby making the lead frame as an electrode leading means by directly connecting the bump to each electrode of a semiconductor element, wherein the lead formed of the thick metal layer has a thickness of 30 to 300 .mu.m, the lead formed of the thin metal layer has a thickness of 10 to 50 .mu.m, and the bump has thickness of 5 to 50 .mu.m.

Abstract: The present invention relates to a magnetic disk control apparatus capable of utilizing a data region of a track. The data read/write controlling apparatus according to the present invention comprises a unit for serially reading a signal series constructed of a servo signal and data which has been recorded on a recording track; a unit for generating a first read/ write control signal in response to the servo signal of the read signal series; a unit for generating a second read/write control signal between the generation of the servo signal and a generation of a servo signal subsequent to the first-mentioned signal; a unit for writing given data into the data region of the recording track in response to the generation of the read/write control signal; and a unit for externally outputting data read out just after the read/write control signal is generated.

Abstract: A semiconductor device is fabricated by placing a semiconductor chip in a lead frame which has no die pad. Electrodes of the chip are connected by bonding wires to respective lead fingers. Additionally, the lead frame has movement restricting fingers which limit horizontal movement of the chip within the lead frame during injection of resin into a mold surrounding the chip. Furthermore, the mold has horizontal movement restricting projections to limit vertical movement of the chip within the mold cavity. The restriction on horizontal and vertical movement of the chip reduces the risk of the bonding wires being broken or short circuited during the resin injection process.

Abstract: A method for producing a lead frame which comprises selectively forming a photoresist film on both sides of a lead frame material of three-layered structure, with an etching stop layer interposed between two metal layers, etching both sides thereof using the photoresist film as a mask, and removing the unnecessary part of the etching stop layer.

Abstract: A semiconductor device is fabricated by placing a semiconductor chip in a lead frame which has no die pad. Electrodes of the chip are connected by bonding wires to respective lead fingers. Additionally, the lead frame has movement restricting fingers which limit horizontal movement of the chip within the lead frame during injection of resin into a mold surrounding the chip. Furthermore, the mold has horizontal movement restricting projections to limit vertical movement of the chip within the mold cavity. The restriction on horizontal and vertical movement of the chip reduces the risk of the bonding wires being broken or short circuited during the resin injection process.

Abstract: An apparatus for forming silver halide grains comprises a reaction vessel for causing the nucleus formation and the crystal growth of silver halide grains. The apparatus further includes: a mixer disposed outside of the reaction vessel and having a high-speed stirring blade; conduits for supplying an aqueous solution of a water-soluble silver salt, an aqueous solution of water-soluble halide, and an aqueous protective colloid solution to the mixer while controlling the rotational speed of the high-speed stirring blade to form fine, silver halide grains; and a conduit for connecting the mixer to the reaction vessel for immediately supplying the fine grains in the mixer to the reaction vessel.

Abstract: A method and apparatus for manufacturing photographic photosensitive solultion to produce crystals of silver halide emulsion having a uniform size and shape and without substantial waste of expensive Ag.sup.+ solution. Flow control valves for controlling the flow rates of Ag.sup.+ and X.sup.- solutions are controlled according to a predetermined flow rate or pAg potential program and using output signals of respective flow meters or a pAg potentiometer. The flow control valves are motor-controlled flow control valves for which the rate of change of flow rate with valve stroke is small and linear.

Abstract: A process of producing silver halide grains by disposing a mixer outside of a reaction vessel for causing a nucleus formation and/or a crystal growth of silver halide grains and containing an aqueous protective colloid solution. The process further includes the steps of: supplying an aqueous solution of a water-soluble silver salt, an aqueous solution of a water-soluble halide(s), and an aqueous solution of a protective colloid to the mixer while controlling the flow rates of the solutions; mixing them while controlling the rotational speed of a stirring blade of the mixer to form fine, silver halide grains; and immediately supplying the fine grains into the reaction vessel to perform the nucleus formation and/or the crystal growth of the silver halide grains in the reaction vessel. The silver halide fine grains thus formed in the mixer are quickly diluted with a liquid withdrawn from the reaction vessel and then the diluted mixture is supplied to the reaction vessel.

Abstract: A method for the quantitative determination of micro-organisms or pyrogens which comprises introducing a prescribed amount of a test liquor containing micro-organisms or pyrogens into a total carbon analyzer to obtain a total carbon value A, while removing micro-organisms or pyrogens from the prescribed amount of the same test liquor and introducing the resultant into a total carbon analyzer to obtain a total carbon value B, subtracting the total carbon value B from the total carbon value A and determining micro-organisms or pyrogens basing upon the resulting value, and an apparatus suitable for conducting the method.