Nichias Corporation

Renesas Electronics Corporation

Other

Nissan Motor Company Limited

Bridgestone Corporation

The Japan Steel Works, Ltd.

Kabushiki Kaisha Bridgestone

Kenichi Shibata

Junichi Ogawa

Tracy Heims

Tatsuo Takagi

Mitsushi Wadasako

Tadashi Igarashi

Tomohiko Hara

Koichi Kimura

Masaaki Yamada

Yukihiro Kiwaki

Yusaku Katsube

Toshiya Uozumi

Kouichi Kimura

Kohichi Kimura

Ryoichi Watabe

Junichi Takahashi

Toshihito Habuka

Mikiya Komatsu

Kaoru Umino

Harumichi Hino

Kazuyoshi Tagawa

Fumihito Yamaguchi

Hiroaki Moritani

Yuji Kanamori

Yoshihiro Goto

Takayuki Ohashi

Toshihiro Minaki

Hisashi Kaga

Sadao Hara

Takashi Ookawara

A circuitry includes a first to fourth waveform synthesizers, each waveform synthesizer includes a first terminal and a second terminal to which input signals are input and a third terminal from which an output signal obtained by synthesizing the input signals is output. Frequencies of first to fourth input signals input to each waveform synthesizer are equal to each other, and phases of the second to fourth input signals are values delayed by approximately 180 degrees, delayed by approximately 90 degrees, and delayed by approximately 270 degrees, with respect to a phase of the first input signal. The output signal of each waveform synthesizer transitions from one state to the other state and transitions from the other state to the one state.

High-frequency signal processing circuitry and wireless communication device

A case for a mobile, electronic device, the case having a hard, clear case body with an outer surface and an inner surface facing the electronic device and at least one separator on the inner surface of the case body to create a space between the electronic device and the case body.

Mobile electronic device case

The variation of the oscillation frequency of an oscillator can be suppressed even in the case where the amount of interference with the oscillator accompanied by an amplifying operation of a power amplifier and the polarity are not constant. An oscillator is configured to be capable of oscillating at an oscillation frequency in accordance with control signals Vcont and FREQ_CTRL. A phase locked loop allows the oscillator to output an oscillation signal Vout in synchronization with a reference signal RELCLK using the control signal Vcont. A power amplifier amplifies the electric power of the oscillation signal Vout. A variation detection unit detects a variation with respect to the time change of the control signal Vcont after an amplifying operation is started by the power amplifier causing 3interference with the oscillator. A variation correction unit generates the control signal FREQ_CTRL on the basis of the variation detected by the variation detection unit, and corrects the variation of the oscillation frequency caused by the interference accompanied by the amplifying operation of the power amplifier.

Radio signal processing device, semiconductor device, and oscillation frequency variation correction method

A case for a mobile, electronic device, the case having a case body with an outer surface and an inner surface facing the electronic device and at least one separator on the inner surface of the case body to create a space between the electronic device and the case body.

A connector for securing a pipe or conduit to a pipe support where the pipe support has at least one channel and two rails that run parallel to the channel and where the connector has an upper pipe connector portion having a platform and a fastening means for securing the pipe to the platform; a middle portion that provides a gap between the upper portion and a lower pipe support connecting portion and where the lower pipe support connecting portion has at least two legs that are integrally formed with the upper pipe connector portion and the two feet at a bottom portion of the legs has two channels formed by the feet and legs whereby the rails of the pipe support are inserted into and secured within the channels.

Pipe block support

A pneumatic tire capable of reducing air column resonance arising from circumferential grooves without changing the shape of unilaterally open-ended lug grooves. Lug groovesare formed in land portions, which are defined by the circumferential grooves, and each of the lug groovesconsists of a lateral groove portion, which extends axially to open at one end into the circumferential groove and communicate at the other end with a sub-grooveprovided in the land portion, and an oblique groove portion, which extends in a direction intersecting with the tire axial and circumferential directions to communicate at one end with the sub-grooveand terminate at the other end within the land portion. Also, the lateral groove portionof the lug grooveis provided with a projectionprotruding toward the tread surface from the bottom of the lug grooveand having a height smaller than the height H of the land portionas measured from the bottom of the lug groove

Pneumatic tire

Gain setting can be performed at high speed while reducing DC offset due to a filter cutoff frequency changeover without the need for input signal muting. A filter circuit having first and second filters is capable of allowing settings of first and second cutoff frequencies. First and second filter switch circuits and a charging circuit including a charging resistor and a charging switch are provided. For a first time period, the first switch circuit is controllably turned on while the second switch circuit is controllably turned off, thereby providing the first filter function. For a second time period, the first switch circuit is controllably turned off while the second switch circuit is controllably turned on, thereby providing the second filter function. For the first time period, the charging switch is controllably turned on so that the second capacitor is charged via the charging resistor.

Filter circuit and receiver using the same

A high frequency signal processing device is capable of carrying out high-accuracy modulation by a PLL circuit. A digital loop is configured in addition to an analog loop having, for example, a phase frequency detector, a charge pump circuit, and a loop filter. A digital calibration circuit is provided which searches for the optimal code set to a capacitor bank upon frequency modulation. Upon the search for the optimal code, a calibration controller first sets a division ratio based on a center frequency to a divider and determines the value of a voltage control signal using the analog loop. Then, the loop filter holds the value of the voltage control signal therein, and a division ratio corresponding to a 'center frequency+modulated portion' is set to the divider, thereby operating the digital loop. The optimal code is obtained by a convergent value of the digital loop.

High frequency signal processing device

A plurality of shallow grooves which are shallower than a sipe are formed on land sections formed on treads of a pneumatic tire. The shallow grooves are configured so that a total sectional area of the shallow grooves per unit area in a cross section in a tire width direction in at least one of tread end areas arranged at end sides of the tread surface in the tire width direction or land end areas arranged at portions adjacent to a drain main groove on the land sections becomes larger than a total sectional area of the shallow grooves per unit on the other areas.

Pneumatic tire with tread having sipes and shallow grooves

Tire tread

This invention relates to a shaped fibrous material for use in the manufacture of fiber-reinforced metals comprising a uniform mixture of ceramic fibers and aluminum borate whiskers. The invention also relates to a method for producing the shaped fibrous material comprising the steps of dispersing ceramic fibers and aluminum borate whiskers in a suitable solvent containing a binder to form a slurry, transferring the slurry into a suction molding, aspirating and dehydrating the slurry to form a shaped dehydrated fibrous material, and drying and firing the shaped dehydrated fibrous material to obtain the shaped fibrous material. The shaped fibrous material can be cast efficiently into a fiber-reinforced metal with a high yield. The thus produced fiber-reinforced metal has a high wear resistance combined with a very mild nature of attacking the mating member.

shaped fibrous materials for fiber-reinforced metals

A refractory for use in firing ceramics has a ceramic coating applied by plasma spraying onto the surface of a heat-resistant lightweight shaped article containing heat-resistant lightweight shaped article containing heat-resistant inorganic fibers. The shaped article is composed of highly aluminous short fibers not longer than 2,000 .mu.m or a mixture thereof with an aluminous refractory powder as bound to each other by means of aluminous binder, the shaped article not containing free silica.

Refractories for use in firing ceramics

A process of production of alumina short fiber reinforced magnesium or magnesium alloy product features formation of alumina short fiber pre-form utilizing a inorganic binder which is composed of one or more oxides having thermodynamically stability equivalent to or higher than MgO. In the alternative, the composite almina fiber and binder surfaces of the alumina short fiber pre-form can be coated by a baked coating layer. Pressure casting of molten magnesium or magnesium alloy is then performed for forming the final products.

Alumina short fiber reinforced magnesium alloy having stable oxide

A heat-resistant and inorganic shaped article comprising a homogeneous mixture of an alumina powder having an average particle size of 10-50 .mu.m and polycrystalline alumina fibers that are bound together with amorphous silica or alumina. The article has a bulk density of 0.4-1.5 g/cm.sup.3 and a total Al.sub.2 O.sub.3 content of at least 75 wt %.

Heat-resistant and inorganic shaped article

A lightweight refractory is disclosed which is a shaped porous body having refractory particles and aluminous short fibers bound to each other with mullite. The crtystalline structure of the refractory is chiefly composed of mullite and corundum. The mullite content is at least 12 mol % of the sum of mullite and corundum. The refractory is substantially free of free silica.

Growing community of inventors

Tokyo, Japan

Kenichi Shibata