Abstract: Embodiments of the invention implement a construction capable of reconciling high read output with high stability by improving the structures of magnetic films. In one embodiment, an inclined crystal grain structure is applied to a soft magnetic free layer, ferromagnetic pinned layer and so forth, thereby enhancing electron scatter performance of thin magnetic films.

Abstract: The level shift device of the present invention comprises: a level shift circuit which converts a voltage level of a single input signal; and a duty correcting circuit which offsets a difference in the duty of an output signal of the level shift circuit with respect to the duty of the input signal.

Abstract: The disclosed invention provides a magnetic head of high stability in which “erase after write” is prevented. Here is provided a magnetic head comprising a thin-film magnetic head for perpendicular magnetic recording, the thin-film magnetic head including a main pole with its tip facing a magnetic recording medium and coils for exciting the main pole, wherein the tip of or at least a part of the main pole consists of a soft magnetic multilayer containing laminations, each of which comprises a first ferromagnetic film, a second ferromagnetic film, and an antiparallel coupling layer formed between the first ferromagnetic film and the second ferromagnetic film, wherein the antiparallel coupling layer causes antiferromagnetic interlayer coupling of the first ferromagnetic film and the second ferromagnetic film.

Abstract: The present invention provides a magnetic sensor suitable for high resolution and having high reliability by achieving stable output even at the occurrence of variations in a gap between a magnetic medium and the magnetic sensor, and a magnetic encoder using the magnetic sensor. The present invention uses a magnetoresistive element having magnetoresistive properties that satisfy the inequation, H10-50<H50-90, where H10-50 represents a magnetic field required for a resistance change from ?R×10% to ?R×50% with respect to a maximum amount of resistance change ?R on a magnetoresitance effect curve, and H50-90 represents a magnetic field required for a resistance change from ?R×50% to ?R×90%.

Abstract: The present invention provides a magnetic sensor suitable for high resolution and having high reliability by achieving stable output even at the occurrence of variations in a gap between a magnetic medium and the magnetic sensor, and a magnetic encoder using the magnetic sensor. The present invention uses a magnetoresistive element having magnetoresistive properties that satisfy the inequation, H10?50<H50?90, where H10?50 represents a magnetic field required for a resistance change from ?R×10% to ?R×50% with respect to a maximum amount of resistance change ?R on a magnetoresitance effect curve, and H50?90 represents a magnetic field required for a resistance change from ?R×50% to ?R×90%.

Abstract: A CAM circuit according to the present invention used for a cash memory and the like, wherein an address is obtained by designating a data, comprises a data compare unit for comparing a data stored in a memory unit to a data of a compare line in a state where a match line is activated and a consistency cancel circuit for forcibly making the match line inactive when a word line and a write instruction signal are both activated. When a write operation and a retrieve operation are simultaneously instructed, a result of the retrieval is forcibly judged to be inconsistent at a write address, thereby it is unnecessary to prohibit the simultaneous execution of the write operation and the retrieve operation.

Abstract: Thin film perpendicular magnetic head with a narrow main pole capable of a high recording density in excess of 100 gigabits per square inch and generating a high magnetic recording field exceeding 10 kOe (oersted), while also modified to suppress remanent magnetic fields occurring immediately after writing operation. In a perpendicular magnetic head comprising a main pole, a return path for supplying a magnetic flux to that main pole, and an conductive coil for excitation of the main pole and return path, the main pole has a pole width of 200 nanometers or less, and a magnetic multilayer made up of a high saturation flux density layer and low saturation flux density layer, the low saturation flux density layer has a thickness within 0.5 to 5 nanometers, the high saturation flux density layer has a thickness from 10 to 50 nanometers for suppressing remanent magnetization and preventing erasing after writing by utilizing a closed magnetic domain structure in the pole.

Abstract: Embodiments in accordance with the present invention provide a Current Perpendicular to the Plane-Giant Magnetoresistive (CPP-GMR) head exhibiting a high magnetoresistance (MR) ratio with a low area-resistance product. A lower shield is made up of a first shield layer/a crystalline reset layer/a second shield layer, and an amorphous material is used in at least a part of the crystalline reset layer, thereby controlling crystallinity of the second lower shield/the CPP-GMR head.

Abstract: Thin film perpendicular magnetic head with a narrow main pole capable of a high recording density in excess of 100 gigabits per square inch and generating a high magnetic recording field exceeding 10 kOe while suppressing remanent magnetic fields occurring immediately after write operations. The perpendicular magnetic head comprises a main pole, a return path for supplying a magnetic flux to that main pole, and a conductive coil for excitation of the main pole and return path. The main pole has a pole width of 200 nanometers or less, and a magnetic multilayer made up of a high saturation flux density layer and low saturation flux density layer. The low saturation flux density layer has a thickness within 0.5 to 5 nanometers, and The high saturation flux density layer has a thickness from 10 to 50.

Abstract: A CAM circuit according to the present invention used for a cash memory and the like, wherein an address is obtained by designating a data, comprises a data compare unit for comparing a data stored in a memory unit to a data of a compare line in a state where a match line is activated and a consistency cancel circuit for forcibly making the match line inactive when a word line and a write instruction signal are both activated. When a write operation and a retrieve operation are simultaneously instructed, a result of the retrieval is forcibly judged to be inconsistent at a write address, thereby it is unnecessary to prohibit the simultaneous execution of the write operation and the retrieve operation.

Abstract: To provide a semiconductor device which can be down-sized and integrated to a high degree. A semiconductor device including a rewiring mixedly includes an input/output (I/O) cell connected to a probing pad; and another input/output (I/O) cell having no probing pad.

Abstract: An optical fiber laser includes a resonator comprising an erbium-doped glass fiber serving as a gain medium and a pumping light source that launches pumping light into the erbium-doped glass fiber. The pumping light source emits pumping light of a wavelength of 980 nm or longer, and the optical fiber laser emits laser light in a wavelength band of 2.8 ?m (2.7 ?m to 3.0 ?m).

Abstract: A material for magnetic pole for attaining a writing head generating an intense recording magnetic field, and a structure and a manufacturing method therefor. The thin film magnetic head includes a magnetic pole layer having a plated magnetic layer containing Co, Ni and Fe formed on a plated underlayer of a sputtered magnetic layer containing Co, Ni and Fe. The CoNiFe magnetic layer having a composition: 40 wt %?Co?70 wt %, 10 wt %?Ni?25 wt % and 10 wt %?Fe?30 wt % and a peak intensity ratio in the X-ray diffraction of I(200)/I(111)?0.5 and I(110)/I(111)?1 (defining peak intensities for the face-centered cubic fcc (111) face, fcc (200) face and the body-centered cubic bcc (119) face as: I(111), I(200), I(110)).

Abstract: In a priority circuit, priority processing is rapidly performed without lowering the voltage level of a signal propagated through serially connected transistors. When the priority circuit is placed in a non-operational state by turning off an NMOS transistor in accordance with a precharge enable signal, potentials on propagating signal nodes and a HIT output terminal are precharged to H potential by PMOS transistors used for precharging. Therefore, when the NMOS transistor is turned on and the priority circuit enters an operational state, if input signals include a H-level signal, the lowering of the voltage level of a propagated signal is suppressed in increasing the potentials on the propagating signal nodes and the HIT output terminal to the H potential by PMOS transistors used for detecting a HIT signal. Thus, malfunction derived from noise can be prevented.

Abstract: To provide a semiconductor device which can be down-sized and integrated to a high degree. A semiconductor device including a rewiring mixedly includes an input/output (I/O) cell connected to a probing pad; and another input/output (I/O) cell having no probing pad.

Abstract: A high frequency mixer circuit is used as a down converter in which an RF signal and an LO signal are mixed to generate an IF signal, or as an up converter in which an IF signal and an LO signal are mixed to generate an RF signal. The high frequency mixer circuit has a wiring layout wherein wiring lines for propagating LO signals intersect only one of the wiring lines for propagating RF signals or IF signals.

Abstract: The disclosed invention provides a magnetic head of high stability in which “erase after write” is prevented. Here is provided a magnetic head comprising a thin-film magnetic head for perpendicular magnetic recording, the thin-film magnetic head including a main pole with its tip facing a magnetic recording medium and coils for exciting the main pole, wherein the tip of or at least a part of the main pole consists of a soft magnetic multilayer containing laminations, each of which comprises a first ferromagnetic film, a second ferromagnetic film, and an antiparallel coupling layer formed between the first ferromagnetic film and the second ferromagnetic film, wherein the antiparallel coupling layer causes antiferromagnetic interlayer coupling of the first ferromagnetic film and the second ferromagnetic film.

Abstract: The disclosed invention provides a magnetic head of high stability in which “erase after write” is prevented. Here is provided a magnetic head comprising a thin-film magnetic head for perpendicular magnetic recording, the thin-film magnetic head including a main pole with its tip facing a magnetic recording medium and coils for exciting the main pole, wherein the tip of or at least a part of the main pole consists of a soft magnetic multilayer containing laminations, each of which comprises a first ferromagnetic film, a second ferromagnetic film, and an antiparallel coupling layer formed between the first ferromagnetic film and the second ferromagnetic film, wherein the antiparallel coupling layer causes antiferromagnetic interlayer coupling of the first ferromagnetic film and the second ferromagnetic film.

Abstract: Embodiments of the invention implement a construction capable of reconciling high read output with high stability by improving the structures of magnetic films. In one embodiment, an inclined crystal grain structure is applied to a soft magnetic free layer, ferromagnetic pinned layer and so forth, thereby enhancing electron scatter performance of thin magnetic films.

Abstract: A perpendicular write head includes a main pole comprising high moment magnetic layers laminated with both soft magnetic layers and non-magnetic layers for antiferromagnetic coupling (AFC) between the high moment material layers.