Hitachi, Ltd.

Hitachi Electronics Eng. Co., Ltd.

Mitsunori Oka

Hitoshi Yokono

Aizo Kaneda

Hidemi Sato

Yoshiji Fujimoto

Masaki Yoshii

Shozo Kadota

Michio Yasuda

Masayoshi Aoki

Shinichi Kaneko

Mitugu Sugano

Kimiya Nokina

Kazuhiro Koshimizu

With the inventive method, after a servo pattern data including index pattern is written onto the servo disk in a magnetic disk unit, a variety of software processes is effected thereafter, and the servo pattern data having been written is read and the index pattern is detected, a varify data is outputted, the comparison between the read index pattern data and the verify data is started, thereby verifying the validity of the writte servo pattern data. More particularly, immediately after completion of said variety of software processes and without waiting for the revolution of the servo disk, the verify data is compared with the read servo pattern data, whereby the write of servo pattern data onto the magnetic disk and the read verify process can be effected speedily.

Method for writing servo pattern in magnetic disk unit

A method of and an apparatus for molding a plastic wherein the injection pressure (transfer pressure) is switched to a holding pressure when the internal pressure of the mold cavity sensed by a pressure sensor reaches a predetermined injection pressure (transfer pressure), to initiate holding of the pressure applied to the cavity. The holding pressure is removed when the internal pressure thereof becomes zero or in accordance with the detection of a predetermined inflection point in the internal pressure which is indicative of a gate sealing point in the mold cavity or is brought to a predetermined value close to zero. The molded articles are of high precision finishes, and conservation of energy and natural resources can be achieved.

Apparatus for molding plastic

A pattern segmenting system for a pattern recognizing device, including a pattern memory for storing character information, means for reading out the character information from the pattern memory, means for detecting the start and end points of a subpattern in the character information and for calculating the center of the subpattern in accordance with the start and end points thereof, means for deciding whether or not the center thereof is within a selected character frame, and means for segmenting the subpattern when the center thereof is within the selected character frame and for regarding the frame as a blank when it is not within the selected character frame.

Pattern segmenting system for a pattern recognizing device

Growing community of inventors

Fujisawa, Japan

Mitsunori Oka