Abstract: An opening long in the longitudinal direction of a duct wall is formed. The whole of the opening is covered with non-woven fabric, and the lateral width of the opening is set to be not shorter than {fraction (1/20)} of the circumferential length of the duct wall. Alternatively, a porous member is thermally welded with the head of an opening of a small cylindrical portion projecting from the duct wall of a duct body 1, while the duct body is prevented from deformation. In a method for manufacturing the air take duct, a high-melting molded piece is brought into contact with a hot plate so as to be heated. A low-melting molded piece is disposed at a distance from the hot plate so as to be heated by radiation heat from the hot plate.

Abstract: An engine cover has such a structure that a cover body has a through hole penetrating both sides of the cover body in an area opposed to a resonant space in which resonant sounds are generated, and an opening of the through hole is covered with the sound absorbing member layer.

Abstract: An automatic gain control circuit has a tuner for amplifying and IF signal according to an increase or decrease in AGC voltage and outputting it therefrom, first and second detectors for increasing a first control voltage and lowing a second control voltage, respectively, a selector switch for selecting either the first detector or the second detector as a destination to output the IF signal, and a voltage converting circuit for outputting the corresponding AGC voltage therefrom. When the IF signal is inputted to the second detector, the second control voltage is outputted to the tuner, whereas when the IF signal is inputted to the first detector, a voltage corresponding to an increase or decrease in the voltage corresponding to the difference between the maximum voltage outputted from the second detector and the first control voltage is outputted to the tuner.

Abstract: Disclosed is an intermediate frequency circuit of a digital television tuner having a flat transmission characteristic in an intermediate frequency band and in which a transistor is prevented from being destroyed by a shock wave such as static electricity applied on the output side. This intermediate frequency circuit has: a transistor for amplifying a television signal in an intermediate frequency band; a low-pass filter provided between a collector of the transistor and an output terminal; and a parallel tuning circuit provided between the collector of the transistor and the ground. Each of a cut-off frequency of the low-pass filter and a tuning frequency of the parallel tuning circuit is set to be equal to or higher than the intermediate frequency band.

Abstract: An information recording and/or reproducing apparatus for recording data onto and/or reproducing data from a recording medium by irradiating a light beam emitted from a light source onto a desired track of the recording medium through an optical system. The apparatus includes (i) a single processor for executing an input/output control of the data for the apparatus and a servo process of the light beam such that the input/output control of the data and the servo process of the light beam are alternately switched at a predetermined period, and (ii) an actuator for moving the light beam on the basis of the servo process of the processor. The precision of the servo process is changed so that the precision is increased when an amount of an external disturbance is large.

Abstract: An information recording and/or reproducing method and apparatus for effecting recording of data onto and/or reproducing of data from a recording medium by irradiating a desired track on the recording medium with a light beam emitted from a light source through an optical system. In the apparatus, a single processor executes an input/output control of the data for the apparatus and a power control of the light beam by interrupting the input/output control at every predetermined period. The processor inhibits the interrupt power control of the light beam in accordance with a predetermined situation.

Abstract: A lightweight and inexpensive soundproof material which is reclaimable comprises a thermoplastic resin substrate and a non-woven cloth laminated on a surface of the substrate and made from thermoplastic resin fibers different from the material of the substrate. The assembly of fibers and the substrate are bonded together integrally through a joint interface which is at least partially molten by ultrasonic vibration.

Abstract: In recording of information, upon reception of a write request from a host computer, recording information from the host computer is stored in a cache memory, and thereafter, a notification of write completion is transferred to the host computer to accept the next request. A request from the host computer is compared with a most recent prior request so as to judge if two requests are sequential write accesses. When it is determined that the two requests are sequential write accesses, a write operation corresponding to the next write access is sequentially performed after a write operation corresponding to the most recent prior request.

Abstract: An information recording and/or reproducing apparatus for recording data onto and/or reproducing data from a recording medium such as a magnetic disk, a magnetooptic disk, or the like by irradiating a laser beam emitted from a light source such as a semiconductor laser onto a desired track of the recording medium through an optical system, wherein the apparatus includes a single processor for executing an input/output control of data for the apparatus and a servo process of the laser beam by interrupting the servo process between the input/output control at every predetermined period. The processor switches a precision of the servo process in accordance with a predetermined situation such as a change in operating mode.

Abstract: A soundproofing material 10 is applied to a vehicle hood panel 14 on the side facing the engine compartment. The soundproofing material 10 as a whole has a sheet-like form and includes a pulverized rubber layer 11 containing rubber grains of various kinds of material, various sizes and various shapes and covering layers 12 which cover the pulverized rubber layer 11. Noises are absorbed topically by a number of rubber grains within the soundproofing material 10 and by air gaps present between the rubber grains. While noise generating sources such as an engine, an induction system unit, transmissions and so on are housed in the engine compartment, noises ranging over a plurality of wavelength are generated by them yet are absorbed by the pulverized rubber layer 11, because the pulverized rubber layer 11 contains a mixture of rubber grains of various kinds, various sizes and various shapes, and the frequency level of the noise to be absorbed by each rubber grain is different piece by piece.

Abstract: A radiator support bracket includes a bracket body and a stopper member. The bracket body is uniformly made of resin and has a plate-like base portion to be fixed to the vehicle frame, a transformable arm portion that extends from the base portion, and a support portion that holds the upper side of the radiator. The stopper member can also be made of resin uniformly with the bracket body.

Abstract: An information reproducing apparatus for reproducing recorded data includes a buffer, a control device and a determining device. The buffer stores data blocks read out from a recording medium and includes first and second storage areas having respectively discontinuous storing and read addresses. The apparatus is controlled to execute in parallel a first process for storing the data blocks into the buffer and a second process for reading out the data blocks stored in the buffer to transfer the data blocks to a host apparatus. The determining device determines whether there are data in the first storage area to be transferred to the host apparatus by comparing a storing address in the buffer of the data which are being stored into the first storage area with a read address in the buffer of the data which are being read out from the first storage area. The first process is controlled so that a predetermined data block which has been read out from the recording medium is stored into the second storage area.

Abstract: An access of a device for writing or reading information from/to a desired region is performed in the following manner on an information recording medium on which a plurality of tracks are spirally formed. The recording medium is rotated and an arrival position of the writing/reading device is estimated when the device is accessed to a track on which the desired region exists. If the estimated position lies within the desired region, the writing/reading device is caused access to the track on which the desired region exists. If the estimated position is located after the desired region, the writing/reading device is caused to access one-preceding track of the track having the desired region.

Abstract: A cylindrical vibration insulator is provided which includes a vibration insulator bushing having an outer cylinder, a rubber member, an inner cylinder, and a bracket for supporting the vibration insulator bushing. The bracket, holding the axial ends of the vibration insulator bushing, is made of sheet-metal and has a pair of plate members which define an opening, and right and left leg portions which have different lengths. The opening and the leg portions are formed on a plate member together by press working. The plate members are opposed to each other, and fixed at the leg portions. As a result, a bracket is made easily and holds the vibration insulator bushing firmly.

Abstract: vibration insulator is provided which includes a vibration insulator section having an outer cylinder, a rubber member which is vulcanization-bonded to the inner peripheral surface of the outer cylinder and an inner cylinder supported by the rubber member, and a bracket for supporting the vibration insulator section, with the thickness of the bracket material being made as small as possible. The bracket is composed of a pair of sheet-metal bracket members holding the axial ends of the vibration insulator. The bracket members include plate-like base sections axially opposed to each other, cylindrical sections which extend axially outward from the base sections and into which the end portions of the outer cylinder are forced, abutting sections extending radially inward from the end edges of the cylindrical sections and abutting the end surfaces of the outer cylinder and joint sections joining the bracket members to each other. A method of manufacturing the vibration insulator bracket is also provided.

Abstract: An apparatus for recording information on a disk-shaped medium with an appropriate amount of information, and allowing immediate verifying of the recorded information. The apparatus includes a unit for recording information of a recording unit on a recording medium, a verifying unit for verifying the recorded information, adapted, after recording the information of the recording unit, to effect a track jump from the last sector of the recording unit to a first sector; and a unit for selecting the number of sectors in the recording unit in such a manner that the position after the track jump from the last second of a recording unit is in front of the first sector by a predetermined number of sectors.

Abstract: Disclosed is a method of recording information on a magnetooptical recording medium, which medium includes a first magnetic layer and a second magnetic layer having a lower Curie temperature and a higher coercive force at room temperature than those of the first magnetic layer. The second magnetic layer is exchange-coupled to the first magnetic layer. The first magnetic layer has a higher compensation temperature than the Curie temperature of the second magnetic layer. The method of recording information includes applying a magnetic field, which is modified in accordance with information from a magnetic head, to the medium to record information on the first magnetic layer and scanning the medium with a light beam to heat the medium to a temperature at least near the Curie temperature of the second magnetic layer so as to transfer the information recorded on the first magnetic layer to the second magnetic layer.

Abstract: Disclosed is an information recording-reproducing apparatus including a light source for emitting a light beam, a lens device for imaging the light beam from the light source on an optical information recording medium, a photodetector for receiving light from the recording medium and for outputting a plurality of types of signals, a detector for detecting a mark indicative of a reference position on the recording medium on the basis of a corresponding signal from the photodetector and for outputting a signal, a device for initiating auto-tracking on the basis of the signal from the detector, a tracking actuator for moving the lens device, and a device for controlling the tracking actuator to start recording and reproduction of information from a predetermined position on the recording medium after the auto-tracking has been initiated.

Abstract: An optical information recording medium includes a plurality of rows of tracking tracks arranged at intervals, a plurality of recording portions provided between the tracking tracks and on which information is recorded by application of a light beam thereto, and an optically detectable mark provided at at least one location on at least one of the recording portions. The recording surface of the recording medium is divided into a recording area and a non-recording area in a direction perpendicular to direction of the plurality of rows of the tracking tracks. The optically detectable mark represents a boundary of the recording area and the non-recording area.

Abstract: An information recording method for recording information on one of a plurality of tracks provided in parallel with each other on an information recording medium while performing a tracking servo operation has a characteristic that when an abnormality of the tracking servo operation is generated during the recording of information on a track, information the same as the above-mentioned information is recorded again on a track which is positioned at least two tracks ahead of the one track.