Nec Corporation

Other

Japan Aviation Electronics Industry, Limited

Shin Kamiyamane

Osamu Hashiguchi

Kazuki Saito

Hisashi Ishida

Masahiro Yamada

Toshihiko Maeda

Yoshinori Mizusawa

Satoru Nagase

A processor includes, an engine that transmits a read command or the other command; and a command transfer unit that performs arbitration to select a command to be executed among the commands transmitted from the engines and outputs the command selected, wherein the command transfer unit that, in case that the read command is selected on the arbitration, brings a subsequent read command into the arbitration after a period represented an issue interval control value in relation to a data transfer length of the read command selected, the subsequent read command being transmitted from the engine which has transmitted the read command selected on the arbitration.

Processor and data transfer method

A card-edge connector of the present invention includes a card member including a circuit board and a plurality of card-edge electrodes arranged on the circuit board. A connector is affixed to a stationary board and includes a plurality of contacts corresponding one-to-one to the card-edge electrodes. The card member further includes an insulation cover covering an area where the card-edge electrodes are arranged and formed with a plurality of slots via which the card-edge electrodes each are partly exposed to the outside. When the card member is inserted into the connector, the card-edge electrodes and contacts are electrically connected to each other.

Card-edge connector and card member

In a cable connector ( ) in which a core wire ( ) of a cable ( ) is pressed against a base contact ( ) in a predetermined direction (a) intersecting the core wire, a support contact ( ) is cooperated with the base contact to clamp the core wire therebetween in the predetermined direction. The base contact is coupled to a base insulator ( ). The support contact is coupled to a cover insulator ( ) movable against the base insulator in the predetermined direction. A partition wall ( ) is formed integral with the cover insulator and positions the core wire to make the core wire face the base contact. When the cover insulator is moved towards the base insulator, the core wire becomes in press contact with the base contact.

Method for connecting a cable to a cable connector having two contacts

A connector engaging/disengaging device comprises a plurality of carrier plates, a pair of side blocks, and a pair of sliders. Each of the carrier plates has lock springs holding cable connectors thereon, and a pair of engaging bosses engaging with the sliders. The sliders have slider grooves engaging with the bosses. Each of the side blocks supports each of said carrier plates slidable in vertical direction, and guides each of said sliders in horizontal direction, and supports a printed circuit board having mating connectors thereon. When the sliders slide in the horizontal-direction, slider grooves of the sliders push up or down the carrier plates to connect or disconnect cable connectors to the mating connectors.

Connector engaging/disengaging device having carrier plates carrying cable connectors moved by the use of sliders

A connector engaging/disengaging mechanism comprises a frame member (,) and connector carriers (,) for engaging and disengaging first connector (,) mounted on a printed circuit board (,) fixed onto the frame (,) and second connectors (,) held on said connector carriers (,). The frame member is provided with guide grooves (,) in which the connector carriers (,) are received to be slidable in an engaging direction (A) and a disengaging direction (B). Each of the connector carriers (,) has connector holding portions for holding the second connectors and an operating portion (,) for moving the connector carrier to engage and disengage the second connectors (,) to and from the first connector (,). When the operating portion (,) is manually operated to move the connector carrier in the engaging direction, the second connectors (,) are connected with the first connectors (,). When the connector carrier is moved in the disengaging direction, the second connectors (,) are disconnected from the first connectors (,).

Connector engaging/disengaging device accommodating a plurality of connector pairs to mate with each other

In a cable connector (,) in which a core wire (,) of a cable (,) is pressed against a base contact (,) in a predetermined direction (a) intersecting the core wire, a support contact (,) is cooperated with the base contact to clamp the core wire therebetween in the predetermined direction. The base contact is coupled to a base insulator (,). The support contact is coupled to a cover insulator (,) movable against the base insulator in the predetermined direction. A partition wall (,) is formed integral with the cover insulator and positions the core wire to make the core wire face the base contact. When the cover insulator is moved towards the base insulator, the core wire becomes in press contact with the base contact.

Cable connector in which two contacts clamp a wire core of a cable therebetween

A hot pluggable connector of the invention accompanies no physical shock when a circuit package (9) is plugged or unplugged. When the circuit package (9) is inserted, board-side terminals (34) and package-side terminals (52) of the hot pluggable connector are not put in contact. By rotating a rotary body (32) having pads (33A to 33C) of different lengths, sequential connection/disconnection between the board-side terminals (34) and the package-side terminals (52) are performed by way of the pads (33A to 33C). Therefore, it is not necessary to plugging or unplugging the circuit package (9) within a time limit, enabling to insert or remove the circuit package (9) quietly. The timings of the sequential connection/disconnection can be arranged only by arranging length difference of the pads (33A to 33C), enabling to reduce production cost of the hot pluggable connector.

Growing community of inventors

Tokyo, Japan

Shin Kamiyamane