Mitsubishi Denki Kabushiki Kaisha

Yuji Ohmura

Keiichi Nishikawa

Masayuki Saito

Hiroshi Ito

Kazuya Oda

Satoru Akutsu

Yuichiro Murata

Yukio Izumi

Atsuo Onoda

Hiroshi Miwa

Hidetada Nagaoka

Yoshinobu Hirokado

Katsumi Kurita

Tadanobu Ohke

Hideto Nishimura

Koichi Okubo

In order to solve a conventional problem that precision deterioration that cannot be determined by only a DOP, a positioning system is provided which comprises: a receiver for receiving signals from a plurality of positioning satellites to output data received from satellites; a satellite selector for selecting a plurality of combinations of positioning satellites to be objects of positioning calculation based on the data received from satellites to output satellite combination data; a positioning calculator for performing positioning calculation based on the data received from satellites and the satellite combination data to output positioning results thereof; a velocity detector for detecting a velocity of the positioning system to output velocity data; and a positioning output determining unit for selecting a positioning result closest to a predicted position out of the positioning results to output the positioning result as a positioning output.

Positioning system

A flexible disk drive unit including a spindle motor for driving to rotate a magnetic disk; magnetic heads opposing the magnetic disk; a carriage attached to a frame and movable in a radius direction of the magnetic disk; wherein the frame and a motor base constitute a common member and the spindle motor is of a sensorless drive system and is directly attached to the frame; and wherein the frame is provided with an attaching hole for erecting a bearing of the spindle motor of the sensorless drive system on the frame.

Frame for flexible disk drive unit having distortion prevention hole and

A composite magnetic head having a head chip including an erasing core, a recording/reproducing core and a center core disposed between the erasing core and the recording/reproducing core. The erasing core is joined to the center core via a first nonmagnetic material which forms an erasing gap, and the recording/reproducing core is joined to the center core via a second nonmagnetic material which forms a recording/reproducing gap. The composite magnetic head has an erasing coil, a recording/reproducing coil, a first back bar for magnetically coupling the erasing core with the center core, and a second back bar for magnetically coupling the recording/reproducing core with the center core. The composite magnetic head satisfies both of following conditional expressions:

Composite magnetic head having minimal crosstalk, maximal head output

A method of encoding position information of each recording portion on a recording medium with a predetermined number of information units, which includes the step of composing position information codes such that the first position information code of the first recording portion is different by one information unit from the second position information code of the second recording portion which is spaced by one recording portion from the first recording portion, by two information units from the third position information code of the third recording portion which is spaced by two recording portions, and by three information units or more from the fourth position information code of the fourth recording portion which is spaced by three recording portions or more.

Method of encoding position information

Growing community of inventors

Tokyo, Japan

Yuji Ohmura