摘要:
A digital broadcast receiver apparatus includes: a detection section that detects a receivable digital broadcast wave; a list production section that produces a list by associating pieces of provider information of a plurality of broadcast programs superposed on the digital broadcast wave with identifiers uniquely assigned to the broadcast programs and then sorting the pieces of provider information associated with the identifiers in predetermined order; an addition section that adds, if the identifiers of a currently-produced current list are the same as the identifiers of a previous list that was produced immediately before the current list, detailed information about the pieces of provider information to sub items associated with the identifiers; and a display control section that displays, based on the identifiers, the pieces of provider information of the list and contents of the sub items corresponding to the identifiers on a display screen.
摘要:
A method for producing nitrogen trifluoride related to the present invention is characterized in that a fluorine gas and an ammonia gas are fed into a tubular reactor and are reacted with each other in the presence of a diluting gas in a gaseous phase under the condition of no catalyst to produce a gas product mainly composed of nitrogen trifluoride and a solid product mainly composed of ammonium fluoride and/or acidic ammonium fluoride, and then the solid product attached to an inner wall of the tubular reactor is removed by means of a device for removing the solid product, which device is mounted to the tubular reactor.
摘要:
According to one embodiment, a disk drive is disclosed to which a plurality of disk rotational speed modes can be set. The disk drive is configured such that input of servo data from servo sectors is thinned out by thinning out an output of an interrupt request to a CPU in a high-speed rotation mode. At the time, a disk controller obtains servo data reproduced from all the servo sectors at timing of servo gates and stores it to a register.
摘要:
According to one embodiment, a disk drive has a DTM type disk. The DTM type disk has a servo area on one recording surface. In the servo area, a servo pattern is recorded. The servo pattern is composed of a projection-depression pattern and an N- and P-pole magnetic pattern. The N- and P-pole magnetic pattern is recorded in an address-data region that contains a cylinder code.
摘要:
A semiconductor memory device formed on a semiconductor chip comprises a plurality of first memory arrays, a plurality of second memory arrays, a first voltage generator, and a plurality of first bonding pads. The semiconductor chip is divided into a first rectangle region, a second rectangle region, and a third rectangle region and the third rectangle region is arranged between the first rectangle region and the second rectangle region. The plurality of first memory arrays are formed in the first rectangle region. The plurality of second memory arrays are formed in the second rectangle region. The voltage generator and the plurality of first bonding pads are arranged in the third rectangle region. The plurality of first bonding pads are arranged between the first rectangle region and the voltage generator and no bonding pads are arranged between the voltage generator and the plurality of second memory arrays.
摘要:
A disk drive of a perpendicular magnetic recording system has a magnetization test function, for testing the magnetized state of a write head. The disk drive is provided with a write driver and a head amplifier unit. The write driver supplies a write current to the write head, for perpendicular magnetic recording. The degaussing unit degausses the write head.
摘要:
In a disk drive that performs perpendicular magnetic recording, the read/write channel has a sync mark generator. The sync mark generator generates a second sync mark before the read/write channel operates to write data on a disk. The second sync mark has a bit pattern including a series of bits representing positive polarity and a series of bits representing negative polarity. The series of bits, which is longer than the other, has a bit length that is at least 50% but less than 85% of the total bit length of the second sync mark.
摘要:
A semiconductor memory device, in which peripheral circuits are arranged in a cross area of a semiconductor chip composed of the longitudinal center portions and the transverse center portions, and in which memory arrays are arranged in the four regions which are divided by the cross area. A benefit of this structure in which the peripheral circuits are arranged at the center portion of the chip, is that the longest signal transmission paths can be shortened to about one half of the chip size to speed up the DRAM which is intended to have a large storage capacity.
摘要:
Herein disclosed is a semiconductor memory device, in which peripheral circuits are arranged in a cross area of a semiconductor chip composed of the longitudinal center portions and the transverse center portions, and in which memory arrays are arranged in the four regions which are divided by the cross area. Thanks to this structure in which the peripheral circuits are arranged at the center portion of the chip, the longest signal transmission paths can be shortened to about one half of the chip size to speed up the DRAM which is intended to have a large storage capacity.
摘要:
A magnetic disk system comprises a magnetic head for writing data on and reading data from a magnetic disk as a recording medium and a magnetic disk unit having a head positioning mechanism for positioning the magnetic head on a selected track of the magnetic disk without forming servo information on the magnetic disk. The magnetic head comprises an MR film which is disposed parallel to the direction of the width of a track of the magnetic disk, current supplying electrodes disposed to be in contact with both ends of the magnetic film which are opposed in the direction of the track width and a signal detecting electrode disposed between the current supplying electrodes to be in contact with the MR film. The width of the signal detecting electrode is less than 1/3 of that of the current supplying electrodes. The magnetic disk system permits highly accurate alignment of the magnetic head with closely spaced tracks.