Kabushiki Kaisha Toshiba

Japan Metals & Chemicals Co., Ltd.

Kazuo Akashi

Nobuyuki Nanno

Yuji Yamanaka

Keizo Ohgami

Hiromi Seimiya

Yoshiaki Suzuki

Makoto Ando

Isao Hasegawa

Teruo Nakamura

Michio Kiyoto

Toshimitsu Saito

Masahiko Kasashima

Mayumi Oka

James Mason

Atsuhiro Ootake

Kouichirou Takeguchi

Nobuyki Nanno

K Ouichirou Takeguchi

A power supply control system for a portable computer having a central processing unit (CPU), and operable in response to power supplied from a rechargeable battery or an alternating current (AC) adapter. The control system includes a charge unit for charging the rechargeable battery; current detectors for detecting power status; and a power control microprocessor for controlling the charge unit independently of the CPU in response to a detected power status.

Power supply control system for a portable computer

When a computer is not externally powered, it operates from installed first and second batteries. In top surface of the computer, LEDs are provided which indicates three states of each battery; need of charging, during charging, and completion of charging.

Portable computer powered by rechargeable batteries

An electronic apparatus includes a body including a storing portion and an engagement portion. A detachable unit is detachably stored in the storing portion. A unit holder holds the detachable unit in the storing portion, the unit holder being slidably connected to the detachable unit and including an engaging member movable between an engaging position and a release position. In the engaging position, the engaging member engages the engagement portion to hold the detachable unit in the storing portion. In the release position, the engaging member is disengaged from the engagement portion. An insertion opening may be provided in the storing portion of the body through which the detachable unit is detachably stored, and a cover may be provided to cover the insertion opening when the detachable unit is stored in the storing portion.

Electronic apparatus with storing portion into which a detachable unit

A personal computer of this invention has a battery pack mounting section for detachably receiving battery packs having different current capacities. The personal computer also includes a switch mechanism for detecting whether a battery pack has a high or low capacity. Battery characteristic values consisting of charge and discharge voltage/current characteristics in units of batteries are prestored in a memory in a power control CPU (PC-CPU). The PC-CPU refers to the memory on the basis of capacity data from the switch mechanism and reads out the corresponding battery characteristic data. A power supply circuit performs optimal charge control on the basis of this characteristic data. Two battery packs are prepared. When the PC-CPU detects that the currently used battery pack is in a low-battery state, it selects the other battery pack to supply the operating power to the personal computer. At the same time the PC-CPU performs optimal charge control of the battery in the low-battery state.

Personal computer for performing charge and switching control of

A portable computer includes a body having a storing portion for storing a hard disk drive pack. The storing portion has an insertion opening which is open to the outside of the body. A hard disk drive holder is detachably connected to the hard disk drive pack. The holder includes a holder main body detachably fitted in the insertion portion. A pair of retaining members are provided on the holder main body and movable between an engaging position in which the retaining members engage engagement portions of the body to hold the holder main body in the insertion opening, and a retreat position in which the members are disengaged from the engagement portions to allow the holder main body to be detached from the insertion opening. A cover plate is detachably fitted in the insertion opening and includes lock pins which engage the retaining members to lock the members in the engagement position.

Electronic apparatus equipped with detachable unit having retaining

In a device such as a personal computer having a memory card unit, terminals of a memory card are arranged symmetrically about power source terminals. When a memory card is inserted upside down into a memory card unit, the power source terminals are connected to a connector of a unit as in a normal operation, and other terminals are connected to identical types of terminals of the connector.

Portable electronic device with memory card unit having symmetrical

A portable computer includes a body having a storing portion for storing a hard disk drive pack. The storing portion has an insertion opening which is open to the outside of the body. A hard disk drive holder is detachably connected to the hard disk drive pack. The holder includes a holder main body detachably fitted in the insertion portion. A pair of retaining members are provided on the holder main body and movable between an engaging position in which the retaining members engage engagement portions of the body to hold the holder main body in the insertion opening, and a retreat position in which the members are disengaged from the engagement portions to allow the holder main body to be detached from the insertion opening. A cover plate is detachably fitted in the insertion opening and includes lock pins which engage the retaining members to lock the members in the engagement position. An interlock is coupled between the pair of retaining members.

In producing a mixed phosphatic fertilizer, humic acid is mixed with fused phosphate to cause the humic acid to react on alkaline ingredients of the fused phosphate for turning these alkaline ingredients into chelate compounds, so that water-soluble phosphoric acid contents of succeedingly added phosphatic fertilizers such as calcium superphosphate and calcium triple-superphosphate are not reduced or insolubilized by being reacted with such alkaline ingredients. Thus, unlike the prior art, a stabilized predetermined level of water-soluble phosphoric acid contents can be secured in the resultant mixed phosphatic fertilizer along with a predetermined level of citric acid-soluble phosphoric acid contents.

Growing community of inventors

Tokyo, Japan

Kazuo Akashi