ELECTRONIC SYSTEM
    1.
    发明专利

    公开(公告)号:JP2001356847A

    公开(公告)日:2001-12-26

    申请号:JP2001105789

    申请日:2001-04-04

    Abstract: PROBLEM TO BE SOLVED: To provide an electronic system for operating networking, switching, and computing. SOLUTION: A mutual connection system (100) of a back plane base is provided with a back plane (102) equipped with plural traces connected to slots for receiving circuit boards (104a-d). The back plane traces are constituted so that inter-point connections (106a-f) from a certain slot to all the other slots can be formed. A hub circuit (110) is arranged on each circuit pack, and the circuit packs are connected to the inter-point connections. The circuit packs are allowed to communicate via direct connection, inter-point connection or indirect connection by transmitting traffics via the inter-point connection and the hub circuit.

    METHOD OF AUTOMATICALLY SELECTING ALERT MODE FOR MOBILE ELECTRONIC DEVICE

    公开(公告)号:JP2003179976A

    公开(公告)日:2003-06-27

    申请号:JP2002271572

    申请日:2002-09-18

    Abstract: PROBLEM TO BE SOLVED: To provide a method and an apparatus for automatically selecting an alert type based on the location of a cellular phone. SOLUTION: The method of automatically selecting the alert type for a mobile electronic device comprises the steps of (A) determining the location of the mobile electronic device, and (B) based on the location information, determining an appropriate alert type for the mobile electronic device. When the cellular phone is located in a restaurant, a theater or a place like that, the alert type is changed to a silent mode (vibration mode), and when the cellular phone leaves the place, the alert type is changed back to a loud audible alert mode. In the loud audible alert mode, the volume becomes larger or smaller depending on the surrounding environment. COPYRIGHT: (C)2003,JPO

    FREE SPACE OPTICAL WIDEBAND ACCESS SYSTEM

    公开(公告)号:JP2000224112A

    公开(公告)日:2000-08-11

    申请号:JP2000009593

    申请日:2000-01-19

    Abstract: PROBLEM TO BE SOLVED: To drastically reduce the number of OLSTs arranged on a tower by transmitting a steerably modulated laser beam to each on of plural subscribers in an OLST viewing area and receiving a signal from a customer by means of OLST when being steered by a specified subscriber. SOLUTION: A free space optical wide band access system is constituted of a center hub 300 and elements such as an 'antenna' arranged in the respective subscribers 21-25, 43 and 44, however, a free space optical link and a laser are used in place of microwave radio. Optical beam scanning technique is utilized in the hub in order to rapidly move the beam from a certain user to another and optical number of virtual point-to-point links are formed. The two different wave lengths of an infrared beam are used in the upstream direction and the downstream direction. The hub is arranged at a sufficiently high position to directly view the multiple latent subscriber. Furthermore, the various and different groups of the subscribers are allotted by plural sectors in a configuration.

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