摘要:
A display apparatus for displaying any data on split blocks on a display screen of a CRT. The apparatus comprises a circuit for producing a horizontal address and a vertical address of a display position on the display screen; a block address generator comparing the horizontal and vertical addresses of the display position with predetermined horizontal split addresses and vertical split addresses for generating a block address which shows one of the split blocks on the display screen according to the comparison result; a code converter for converting the block address to a predetermined code; a memory start address generator for generating a memory start address according to the code outputted from the code converter; a memory address generator for generating a memory address from the memory start address and the horizontal and vertical addresses of the display position; a display memory storing display data and output the display data according to the memory address; and a display monitor for displaying the display data outputted from the display memory on the CRT.
摘要:
[Problem] The problem is to provide a system with a large capacity as the recording and regenerating apparatus through piling optical disks and stocking the piled optical disks compactly.[Means to solve the Problem] An optical disk recording and regenerating apparatus to make a holding means, which includes an optical disk sucking part to suck an upper surface of an optical disk, and a partition sheet sucking part to suck a partition sheet by sucking a held area of the partition sheet and which sucks and holds at least one of the optical disk and the partition sheet, move to an optical disk drive from a tray loaded with a plurality of the optical disks which are piled through the partition sheet having the held area projecting from an edge of the optical disk and not overlapping with the optical disk when the optical disk and the partition sheet are piled. It may be preferable that the partition sheet includes an optical disk exposing area, and the holding means includes an optical disk sucking part to suck the upper surface of the optical disk in the optical disk exposing area, and a partition sheet sucking part to suck an upper surface of the partition sheet.
摘要:
A semiconductor light emitting device is made of a group III nitride semiconductor having a major growth surface defined by a nonpolar plane or a semipolar plane, and has a quantum well layer containing In in a light emitting layer. A strain compensation layer made of a group III nitride semiconductor containing Al and having a lattice constant smaller than the lattice constant of the quantum well layer in a strain-free state is interposed in the light emitting layer of a quantum well structure having the quantum well layer and a barrier layer or in an adjacent layer adjacent to the light emitting layer.
摘要:
A positioning control device and method in which the relative position error in tracking is reduced by using the periodicity of position shift. The positioning control device comprises a position detecting unit for measuring the relative position error between the desired position of an objective member and a moving member, an adding unit for adding a position error signal output from the position detecting unit and a delay signal, a signal delay unit for outputting the delay signal which is obtained by delaying an output of the adding unit at a period corresponding to the position shift of the objective member, a drive unit for moving a moving member, and an inputting unit for inputting the signal of the sum of the position error signal and the delay signal to the drive unit and addition-inputting the delay signal to the drive unit through a filter having a predetermined frequency characteristic in a specific frequency range.
摘要:
The character input keyboard. One shift key and one space key are placed on the home position of the left and right thumb, and one control key is placed between them. These keys have the width from 1 to 1.5 times of the character key.
摘要:
A semiconductor laser device includes a semiconductor laminate structure that includes a light emitting layer that contains In, a p-type guide layer disposed at one side of the light emitting layer, an n-type guide layer disposed at another side of the light emitting layer; a p-type clad layer disposed at an opposite side of the p-type guide layer to the light emitting layer, and an n-type clad layer disposed at an opposite side of the n-type guide layer to the light emitting layer. The semiconductor laminate structure includes a rectilinear waveguide formed parallel to a projection vector of a c-axis onto the crystal growth surface, and a pair of laser resonance surfaces formed of cleavage planes perpendicular to the projection vector.
摘要:
In case of pulling a focusing servo in a recording surface 2 of an optical disk 1, the focusing servo is pulled in a substrate surface 3 of the optical disk 1, thereafter, a focusing servo pull-in position is allowed to transfer to the recording surface 2 of the optical disk 1 by means of a focusing jump control circuit 12, whereby a focusing servo pull-in operation is made upon the recording surface 2, while an objective lens retreating control circuit 14 outputs a control signal in a direction along which the objective lens 4 is allowed to go away from the optical disk 1 for a predetermined time, and then, another control signal in a direction along which the objective lens 4 is allowed to be close to the optical disk 1 for a predetermined time in the case when an abnormal focusing servo pull-in operation was detected.
摘要:
A noise reducer for outputting a noise-reduced signal by extracting noise included in an input video signal so as to produce a noise signal and by subtracting the noise signal from the input video signal is provided. The noise reducer includes: a signal processing portion which includes: a delay means for delaying the noise-reduced signal by a predetermined time period thereby outputting a delayed signal; a first subtracter for subtracting the delayed signal from the input video signal thereby outputting a differential signal; an orthogonal transformer for conducting orthogonal transformation on the differential signal, each pixel block of the differential signal being transformed as a unit, thereby outputting an orthogonally transformed signal; a nonlinear processing portion for conducting nonlinear processing on the orthogonally transformed signal based on a predetermined threshold thereby outputting a nonlinear processed signal; an orthogonal inverse transformer for conducting an inverse transformation of the orthogonal transformation on the nonlinear processed signal thereby outputting an inversely transformed signal; an attenuator for attenuating the inversely transformed signal by a predetermined coefficient thereby outputting the noise signal; a second subtracter for subtracting the noise signal from the input video signal thereby outputting the noise-reduced signal; and an adaptive control portion for controlling at least one of the predetermined threshold and the predetermined coefficient based on at least one of the differential signal and the orthogonally transformed signal.
摘要:
A nitride semiconductor laser diode has a quantum well layer consisting of a mixed crystal of Alx1Iny1Ga1-x1-y1N (x1≧0.5, y1≧0 and 1−x1−y1≦0.5) in a group III nitride semiconductor multilayer structure having a major growth surface defined by a nonpolar plane. A cavity direction of the laser diode is perpendicular to a c-axis. The major growth surface of the group III nitride semiconductor multilayer structure may be defined by an m-plane. In this case, the cavity direction may be along an a-axis.
摘要翻译:氮化物半导体激光二极管具有由具有Al x InIn 1 Ga 1-x1-y 1 N(x1> = 0.5,y1> = 0和1-x1-y1@0.5)的混晶构成的量子阱层,其具有 主要生长表面由非极性平面限定。 激光二极管的空腔方向垂直于c轴。 III族氮化物半导体多层结构的主要生长表面可以由m平面限定。 在这种情况下,空腔方向可以沿着a轴。
摘要:
A transportation body 1 for a flexible optical disk 10 has flexibility, and includes a rotation stabilizing board 2 having a disk-shaped form, an optical disk alignment unit 4 installed in the central part of the rotation stabilizing board 2, and a spacer 3 installed on a surface of the rotation stabilizing board 2. A combination of the transportation body 1 and the optical disk 10 can be treated as an equivalent of a conventional optical disk having rigidity, by transporting the flexible optical disk 10 placed on the transportation body 1 and by recording/reproducing information onto/from the flexible optical disk.