摘要:
An improved disc drive is capable of compensating the relative positional shift of a head caused mainly by a temperature change. The disc drive includes a frame having a disc holder for rotatably driving a disc, a head for reading information recorded in the disc, a head carriage which is movable in a predetermined radial direction of the disc, a rotation shaft extending in parallel with the radial direction, a driving mechanism for moving the head carriage in the radial direction by engaging with the rotation shaft, an adjustment mechanism for compensating the positional shift of the head due to a change of ambient temperature by providing an additional deformation of the adjustment mechanism to the carriage.
摘要:
A sub-printed board 40 is disposed on a main plate of a main frame 30 at a position close to a front bezel 37. A main printed board 31 is provided on the main plate at a position opposite to the front bezel. A rotation drive mechanism for magnetic disks is mounted on the sub-printed board. A loading mechanism is assembled over the rotation drive mechanism in order to mount and eject the magnetic disks on and out of the magnetic disk drive. A head carriage 34 is disposed above the main printed board by means of a first supporting member provided on the main plate.
摘要:
A head feeding mechanism in a magnetic recording and reproducing device comprises: a "0" side carriage which has a "0" side magnetic head mounted on the surface of the front end portion thereof, and is fed in the direction of length of a slot formed in a magnetic disk holder, into which a magnetic disk is loaded, by a guide provided on a device frame; and a "1" side carriage which has a "1" side magnetic head 16 mounted on the surface thereof which is confronted with the "0" side magnetic head, and a base which is flexibly supported on the base 1a of the "0" side carriage, and driven ears extended from the middle portion thereof which are driven by the edge of the slot with the aid of an energizing spring. In the mechanism, the "0" side carriage is formed rigid by molding resin, and has a flexible thin portion in the middle of the front end portion thereof which is much smaller in thickness than the other portions, and the "0" side magnetic head is soldered to a flexible printed circuit board with the flexible thin portion held between the "0" side magnetic head and the flexible printed circuit board.
摘要:
In a photointerrupter comprising a light emitting diode and a photo transistor which are opposed to each other, the photo transistor has an emitter which is grounded through a resistor while the light emitting diode has a cathode which is connected to an input terminal of a one IC chip for controlling a flexible disk drive. The one IC chip incorporates a constant current source which is connected to the input terminal through an npn-type bipolar transistor. The one IC chip incorporates a logic circuit having an output terminal which is connected to a base of the npn-type bipolar transistor.
摘要:
In an integrated circuit for use in controlling a flexible disk drive for driving a flexible disk loaded therein, a power on reset circuit produces a reset signal after a predetermined time duration elapses where a power supply voltage is stable from a time when a power supply is applied. The power on reset circuit comprises a voltage detecting circuit for detecting a power supply voltage to produce a voltage detected signal and a delay circuit for producing, responsive to the voltage detected signal, the reset signal after the predetermined time duration elapses. Disposed between a selectable function circuit and a logic circuit, an output holding circuit holds output signals of the selectable function circuit as held signals and supplies the held signals to the logic circuit. The output holding circuit consists of two D-type flip-flops which are disposed in correspondence with two output signal lines of a logical circuit.
摘要:
A mask has a mask body and a pair of ear straps. The mask body includes an outer layer sheet and an intermediate layer sheet. The outer layer sheet is formed of hydrophobic fibers. The intermediate layer sheet is laid on the outer layer sheet so as to be located on a wearer's side of the outer layer sheet when the mask is worn. The intermediate layer sheet includes a first fiber layer which is formed of polyolefin fibers containing an inorganic antimicrobial agent and a second fiber layer which is formed of polyolefin fibers and has a larger fiber diameter than the first fiber layer. The fiber diameter of the first fiber layer is within a range of 0.5 to 2.8 μm and the ratio of a particle diameter of the inorganic antimicrobial agent with respect to the fiber diameter is within the range of 0.1 to 6.0.
摘要:
It is an object of the invention to provide an effective technique for realizing a desired moisture releasing property, in a cosmetic puff having an air-laid non-woven fabric sheet formed of pulp fibers. A cosmetic puff 100 according to this invention includes an inner layer 110 in the form of a sheet and surface layers 120 in the form of laminated sheets on the both sides of the inner layer 110. The inner layer 110 is formed by an air-laid non-woven fabric sheet containing at least pulp fibers and polyethylene terephthalate fibers.
摘要:
A method and apparatus for transmitting and receiving digital information including video information and audio information. The video information is compressed by a first compression method and the audio information is compressed by a different second compression method for transmission on a transmission path.
摘要:
An apparatus for receiving digital information including a receiver which receives the digital information that has digital video information bit-compressed by a first compression system, digital audio information bit-compressed by a second compression system, and error-detection information added to both the digital video information and the digital audio information. There is also provided a demodulator which demodulates the digital information received by the receiver, an error detector which detects an error of digital information demodulated by the demodulator by use of the error-detection information, a first expander which bit-expands video information among the digital information error detected by the error detector corresponding system, and a second expander which bit-expands audio information among the digital information error detected by the error detector corresponding to the second compression system.
摘要:
By introducing a new copy control system into video signals subjected to picture quality restriction satisfactory only in small-sized PMP displays, a new business model in which copyrighters, consumers and makers can have mutual prosperity is created. “A new copy control rule of prohibiting a video signal output with a picture quality equivalent to that at time of recording from being copied, but permitting a video signal sufficiently degraded in picture quality as compared with time of recording to be copied” is added to the copy-never, copy-one-generation, and copy-free states belonging to the conventional copy control rule. The quality for which the copyrighter can permit copying corresponds to half the current number of DVD pixels. If a quality restricting scheme of thinning out pixels to half compared with time of recording is used, therefore, needs of consumers desiring to enjoy PMPs are satisfied while protecting rights of copyrighters.