Fujitsu Corporation

Koichi Oikawa

Tomohisa Shingai

Hideyuki Kikuchi

Yusuke Nakanishi

Masayuki Kato

Yoshiaki Sakamoto

Yutaka Nakamura

Shuji Koike

Hitoshi Komoriya

Akira Iwaishi

Yuji Yoshida

Jun Kodama

Takao Hirahara

Hideo Okada

Kazuki Ogawa

Toru Kamada

Tomohiro Aoyagi

Mitsuru Shiraishi

Masahiro Nagai

Ryosuke Yabu

Isao Mizobuchi

A computer-readable recording medium storing a program that causes a computer to execute a process, the process includes specifying occurrence frequencies of respective gradation values with regard to pixels included in image data and represented by gradation values of a predetermined bit count; extracting a predetermined number of gradation values from a gradation value having a high occurrence frequency in a descending order; generating correspondence information for performing bit conversion of the extracted gradation values into coded values of a bit count in accordance with the predetermined number; and encoding the image data by performing bit conversion of first pixels having any one of the predetermined number of gradation values among the pixels based on the correspondence information, and performing bit conversion of second pixels having any one of gradation values other than the predetermined number of gradation values among the pixels.

Image processing apparatus, image processing method, and recording medium

An image processing method is performed by a computer, for determining that a line is a crack or something other than the crack. The method includes: extracting a linear region from an image of an object captured by an imaging apparatus; determining a luminosity change in a direction traversing the linear region at each of a plurality of positions separate in a longitudinal direction of the linear region; and identifying a type of the linear region based on the luminosity changes at the plurality of positions.

Image processing program, image processing apparatus, and image processing method

A communication device includes: a reception unit that receives a beacon signal including an identification number of a slave unit from a master unit; a first assignment unit that performs an assignment of a first communication interval for receiving a signal from the master unit based on the number of identification numbers included in the beacon signal; and a second assignment unit that performs an assignment of a second communication interval for transmitting a signal to the master unit within a rest of time calculated by subtracting the first communication interval and a non-communication interval, which is not used for a communication with the master unit, from a signal period which is a period of the beacon signal.

Communication device, communication system and communication method

A centering apparatus for centering a disk about a center member such as a shaft or hub includes a plurality of pairs of actuator units. The actuator units of each of the pairs faces each other through the disk. Each of the actuator units has a member which moves linearly and can come into contact with the disk.

Centering apparatus and method

An ink jet head includes a pressure chamber, a vibration plate, and a piezoelectric element which is provided on the vibration plate and causes a volume displacement of the pressure chamber. The piezoelectric element has a thickness of 20 &mgr;m or less, and the pressure chamber and the piezoelectric element satisfy a relation V /(L b)>550&times;10 , where V &lsqb;m &rsqb; denotes a volume displacement of the pressure chamber when the piezoelectric element is driven, L &lsqb;m&rsqb; denotes a width of the piezoelectric element, and b &lsqb;m&rsqb; denotes a depth of the pressure chamber.

Ink jet head and ink jet printer

A method of manufacturing an ink jet head includes the following steps, wherein the ink jet head is provided with a plurality of pressure chambers arranged continuously, ink feed means for feeding ink into these pressure chambers, and ink ejecting means for ejecting ink from each pressure chamber via a nozzle, so as to feed and eject ink by a change in volume of each pressure chamber. First, a first metallic film is formed on both surfaces of at least one wall composing the pressure chamber perpendicular to an arranging direction of the plurality of pressure chambers, wherein the at least one wall is one wall of a piezoelectric element deformed when a voltage is impressed. Then, the first metallic film formed on one of the both surfaces of at lest one wall is removed to form an exposed surface of the wall of the piezoelectric element. Thereafter, a second metallic film is formed on the exposed surface, whereby metallic films, thicknesses of which are different from each other, are formed on the both surfaces of at least one wall of the piezoelectric element.

Method of manufacturing ink jet head

Growing community of inventors

Kawasaki, Japan

Koichi Oikawa