Hitachi, Ltd.

National Research Institute Of Police Science

Tatsuo Nojiri

Yasuaki Takada

Hisashi Nagano

Izumi Waki

Masao Suga

Hidehiro Okada

Yasuo Seto

Isaac Ohsawa

Yasuhiro Sano

Shigeharu Yamashiro

Yuichiro Hashimoto

Masahiro Iwamura

Tatsumi Yamauchi

Masuyuki Sugiyama

Shigeya Tanaka

Tetsuo Nakano

Shun Kumano

Hiroki Mizuno

Hisashi Tada

An object of the invention is to improve uniformity of a standard sample used for evaluating a gas flow type analysis system. The invention includes weighing a background into a container; adding a sample solution to the background; drying the sample solution; adding a solvent that can dissolve the sample into the container; and drying the solvent added to the container. The invention is also characterized in that the solvent is an organic solvent, in particular, acetone.

Method for preparing standard sample for gas flow type analysis system

A gas monitoring apparatus includes a sample introducing portion, a measurement portion, an ionization portion, a mass analysis portion, a data processing portion and a display. The sample introducing portion introduces a sample gas including an object material to be measured. The measurement portion measures a concentration of a predetermined coexisting material, which coexists with the object material in the sample gas. The ionization portion ionizes the sample gas. The mass analysis portion analyzes mass of an ion produced by the ionization portion. The data processing portion analyzes signals detected by the mass analysis portion to calculate a concentration of the object material. And the display displays results of analysis conducted by the data processing portion. The data processing portion includes an adjustment portion which adjusts the concentration of the object material according to the concentration of the predetermined coexisting material.

Gas monitoring apparatus

A microprocessor according to the present invention comprises a sub-read bus, to which output terminals of registers of a register file of the microprocessor are coupled. The sub-read bus is in turn coupled to a main read bus of the microprocessor through a bus output circuit. Upon occurrence of a read access to any of the registers, the bus output circuit couples the sub-read bus with the main read bus, whereby data read out from the registers to the sub-read bus are transmitted to the main read bus, and under no existence of the read access, the bus output circuit interrupts the data transmission from the sub-read bus to the main read bus. With this, a load capacitance of the read bus is reduced. As a result, a time for making access to the read bus is much improved.

Microprocessor with improved internal transmission

Growing community of inventors

Takasaki, Japan

Tatsuo Nojiri