Abstract: A semiconductor device includes a source region 4, a channel region 8, a drain region 5 and a gate electrode which is patterned so that its side wall is tapered to be more narrow toward the top. A drift region 22 is formed between the channel region 8 and drain region 5 so as to be shallow below the gate electrode 7A (first N−layer 22A) and deep in the vicinity of the drain region 5 (second N−layer 22B). This configuration contributes to boosting the withstand voltage and reducing the “on” resistance of the semiconductor device.

Abstract: A disk recording member includes a main body and a center hub mounted in a center hole of the main body. The center hub includes upper and lower hub components for holding upper and lower sides of the main body and a screw for connecting the upper and lower hub components.

Abstract: To easily know a correct direction of insertion into a recorder/player and assure a large width of an access opening through which the optical head approaches an optical disc, a disc cartridge is provided which includes an access opening (21) formed in a cartridge body (6) and through which a part of the recording area of an optical disc (5), extending between lead-in and lead-out areas, is exposed outside for data read and write, a pair of shutter members (25), (26) provided movably towards and away from each other to open and close the access opening (21); and a shutter open/close mechanism (27) having a pair of guide recesses (36a) and (36b) formed in a main side the of the cartridge body (6) obliquely in relation to the width of the cartridge body (6) to support the pair of shutter members (25) and (26), respectively, to be movable.

Abstract: To provide a new shutter open/close mechanism suitable for use with a cartridge body (6) whose front end is formed in an arbitrary shape for easily knowing a correct direction of insertion in a recorder/player, a guide recess (36) to support a shutter plate (25) movably is formed on a main side of the cartridge body (6) to be oblique relative to the width of the cartridge body (6). The shutter open/close mechanism (26) includes a guide member (31) supporting the shutter plate (25) and movably engaged in the guide recess (36), an operating member (32) to move the guide member (31), a transmission member (33) connecting the guide member (31) and operating member (32) to each other to transmit an operating force from the operating member (32) to the guide member (31), and support surfaces (37) formed on the cartridge body (6) to support the operating member (32) movably. The transmission member (33) is pivotably connected to the guide and operating members (31) and (32).

Abstract: There are provided an optical disc 5, a cartridge body 6, a recording-reproducing opening 21, a shutter plate 25, and a shutter open/close mechanism 26. The cartridge body 6 has a disc container 16 for accommodating the optical disc 5 therein. The recording-reproducing opening 21 is provided on the cartridge body 6 for externally exposing part of a recording area of the optical disc 5 ranging from an inner periphery to an outer periphery. The shutter plate 25 is provided for opening and closing the recording-reproducing opening 21. The shutter open/close mechanism 26 has a guide groove 34 for movably supporting the shutter plate 25. The guide groove 34 is provided obliquely with reference to a width direction of the cartridge body 6 on the principal plane thereof.

Abstract: A disc cartridge can effectively prevent dirt particles from entering the cartridge main body and improve the reliability of the operation of signal recording/reproduction on the disc-shaped recording medium. The disc cartridge comprises a cartridge main body 6 and a shutter member 35 having an upper shutter section 41 and a lower shutter section 42 adapted to openably close the recording/reproduction opening 17 and the drive opening 18 arranged outside the cartridge main body 6. A shutter cover 50 is arranged on the main surface of the cartridge main body 6 to cover the area of displacement of the lower shutter section 42. The shutter cover 50 is provided with an opening 51 slightly smaller than the lower shutter section 42 of the shutter member 35 at a position corresponding to the recording/reproduction opening 17 and the drive opening 18.

Abstract: A container casing exchangeably holding an optical disc that can be loaded on a disc drive device as it holds an optical disc. The container casing includes a casing main member having a disc housing section for holding the disc-shaped recording medium towards its major surface, an aperture for recording and/or reproducing the disc-shaped recording medium held in the disc housing section and a center opening for rotationally driving the disc-shaped recording medium held in the disc housing section. The casing main member rotatably carries a cover member for opening/closing the disc housing section and an opening/closure controlling members. These opening/closure controlling members are moved between the first position engaging with the cover member and the second position disengaged from the cover member to control the opening/closure of the cover member to enable opening/closure of the cover member to enable exchange of the optical disc while assuring the positively closed state of the disc housing section.

Abstract: A semiconductor device includes a source region 4, a channel region 8, a drain region 5 and a gate electrode which is patterned so that its side wall is tapered to be more narrow toward the top. A drift region 22 is formed between the channel region 8 and drain region 5 so as to be shallow below the gate electrode 7A (first N− layer 22A) and deep in the vicinity of the drain region 5 (second N− layer 22B). This configuration contributes to boosting the withstand voltage and reducing the “on” resistance of the semiconductor device.

Abstract: A case for accommodating a disc cartridge is disclosed which is capable of reliably protecting a disc and enabling the disc cartridge to easily be loaded/unloaded, which can arbitrarily be designed and the cost of which can be reduced. The case for accommodating a disc cartridge incorporates: a frame formed by integrating first and second frames disposed opposite to each other and a connection member for connecting the base portions of the first and second frames to each other; and a cover formed by integrating first and second cover plates which are inserted into a space between the first and second frames to be opposite to each other and a connecting cover member for connecting the base portions of the first and second cover plates to each other. The frame is made of the synthetic resin having excellent impact resistance as compared with the cover. The cover is made of the synthetic resin having light permeability.

Abstract: A flash memory card includes one or a plurality of flash memories and a controller having an interface connected to a host computer to store card attribute information to be presented to the host computer at a predetermined storage position in the flash memory.

Abstract: Disclosed is a method of manufacturing a semiconductor device which includes a source region, a channel region, a drain region, a gate electrode formed on the channel region through a gate insulating film 6 and a drift region (N− layer 22) formed between the channel region and the drain region, wherein the process of forming the drift region (N− layer) comprises the steps of: ion-implanting and diffusing at least two kinds of second conduction type impurities (e.g. phosphorus and arsenic ions) having different diffusion coefficients in a P-type well region 21; ion-implanting at least one kind first conduction type impurities (e.g. boron ions) having a diffusion coefficient substantially equal to or larger than that of at least one of said second conduction type impurities (e.g. phosphorus); and diffusing the first conduction type impurities after the gate insulating film 6 has been formed.

Abstract: A method for punching a template is provided comprising the steps of partially punching the template by applying a first punch to a first surface of the template to form a recessed portion thereof and by applying a first die to a second surface of the template to form a projected portion thereof, so as to produce a first shear plane connected with the first surface on a peripheral surface of the recessed portion and a second shear plane connected with the second surface on a peripheral surface of said projected portion; returning the projected portion so as to be substantially aligned with the recessed portion by holding the first surface and the second surface between a second punch and a second die; and fully punching the template by applying a third punch to the second surface and a third die to the first surface to as to produce a third shear plane connected with the second surface on a peripheral surface of the recessed portion and a fracture plane connected between the third shear plane and the first sh

Abstract: Disclosed is disc medium accommodating case for conveying a large number of disc media, in which the embedding structure for the column for stacking the disc media and the case bottom plate member is improved, whereby a sturdy case is provided which is free from deformation or breakage during handling, transportation, etc.

Abstract: A compact video camera has an image pickup lens system providing a zooming function and a wide angle field of view. The zooming function is performed by a zoom lens, while the wide angle view is achieved via a wide angle converter. The wide angle converter, located closer to the object than the zoom lens, comprises a negative lens, a positive lens, and a reflecting member located between the negative and positive lenses. With the use of the reflecting member, an optical axis of the image pickup lens system extending from the object side to the image side of the camera may be folded. The position at which the optical axis is folded is located closer to the object side than the image side.

Abstract: A disc cassette has a case in which a disc-like recording medium is rotatably received. The case has an opening through which at least a part of the recording medium is exposed. A rectangular recess is formed on a front area of the case where the opening is positioned. The recess is defined by two opposed side walls, a back wall and a bottom wall. The back wall faces forward. A shutter is slidably engaged with the recess in a manner to selectively open and close the opening. The shutter is slidable in a direction parallel with the direction in which the back wall extends. The back wall of the rectangular recess has a surface which is inclined relative to the bottom wall.

Abstract: A disk cartridge includes a cartridge casing comprised of upper and lower shells attached along the peripheral edges thereof so as to define a disk receiving space within the cartridge casing. The casing structure is formed with an insert opening for allowing a data disk to be easily inserted into an operating position within the assembled cartridge casing. A slide area which may be formed as a recessed surface portion, or the like, is defined at corresponding outer peripheral portions of the upper and lower shells. A disk access opening is formed in the casing shells at a location within the slide area for allowing a head portion of a disk drive to perform read and write operations to the disk. A slidable shutter is mounted astride the upper and lower shells at and edge of the cartridge casing, within the slide area.

Abstract: A semiconductor memory device including a semiconductor memory having a memory region divided into a plurality of blocks including backup blocks, the number of writes to each block being limited, and a memory controller for reading data from the semiconductor memory so as to check an error in the data read from each block, and correcting the error if it is correctable. The memory controller includes a counter for counting the number of correctable errors detected for each block, transferring the data of the corresponding block to the backup block when the number of errors detected reaches a preset value, and inhibiting re-use of the block regarding it as that the life time of the block is almost over.

Abstract: In a tape cartridge in which a magnetic tape wound around a pair of tape reels is driven by a drive belt and in which a traveling of the tape is guided by a tape guide,there is arranged a construction which has upper and lower flanges each of which is a generally circular plate and has a center opening at a center portion and a tape guide, the tape guide including an upper fixing portion which passes through the center opening of the upper flange for having the upper flange secured thereto through caulking, a tape guide portion which guides traveling of the tape and a lower fixing portion which passes through both the center opening of the lower flange and a fixing bore of the base plate for having both the lower flange and the base plate secured thereto through caulking, so that the tape guide is stood on the base plate and guides at the tape guide portion the magnetic tape which runs between the pair of tape reels.

Abstract: A disc cartridge liner, the liner including a thermoplastic fiber entangling body formed by entangling thermoplastic fibers and a cellulose fiber entangling body formed by entangling a regenerated cellulose fiber and a refined cellulose fiber, the thermoplastic fiber entangling body and the cellulose fiber entangling body being heated and pressed to be attached to each other. The refined cellulose fiber forming the cellulose fiber entangling body is contained therein at a rate of not less than 20% by weight, and the refined cellulose fiber has dry strength of not less than 3 g/d. The cellulose fiber entangling body may contain therein a rubber based binder at a rate of not more than 3% by weight. The liner, formed by heating and pressing the thermoplastic fiber entangling body and the cellulose fiber entangling body to be attached to each other, has high strength, dimensional stability, frictional stability and wipe-off performance, and exhibits stable and satisfactory cleaning effect.