Lenovo (Singapore) Pte. Ltd.

Michael W J Hogan

Stephen John Flint

Eric Rong Ao

Lucian Rusu

Behzad Assar

Mark Pearson

Shannon D McGale

Rodolfo B Salinas

A transceiver-receiving system, such as a network switch with pluggable transceivers, is built with hardware and machine logic so that power to certain components is turned off when the pluggable transceiver is not present in its plug in slot. The machine logic for handling the turning off an on of power is present on a processor on the board to which the plug-in slot is attached. The other hardware for handling the turning on and off of the power includes a communication line from the plug-in slot to the processor, and a set of switch(es) located on the power path for the component(s) to be turned on and off according to the presence of absence of the transceiver.

Effective power management for pluggable transceiver receiving hardware in network switching systems

A circuit board has a first side and a second side opposite thereto. The board includes vias extending through the substrate from the first side to the second side, and via contact pads on the second side, each of which surrounds a corresponding via. The board includes a pair of surface mount contact pads on the second side. Each surface mount contact pad has a surface area and edges, each of which can have a shape to maximize the surface area while maintaining predetermined minimum separation distances. Each edge except one or more edges that are opposite another surface mount contact pad have a curved shape, and each edge opposite another surface mount contact pad have a linear shape. Curved edges adjacently opposite corresponding via contact pads can have curved shapes can have concave shapes, and curved edges not adjacently opposite via contact pads can have convex shapes.

Maximizing surface area of surface mount contact pads of circuit board also having via contact pads

High-speed serial communications between programmable devices connected to an I2C bus that includes a serial clock channel (SCL) and a serial data channel (SDA), having at least a logical low state and a logical high state. The programmable device determines if the SCL channel is idle, indicated by a logical high state. Determining the SCL to be idle, the programmable device holds the SCL to a logical low state. The programmable device operates high-speed serial communications using the SDA channel while holding the SCL to the low logical state. In response to completion of the high-speed communications, the programmable device releases the SCL channel and the SCL channel returns to the logical high state.

High speed overlay of idle I2C bus bandwidth

A device connects a computer network cable transceiver to a printed circuit board. The device includes a high-profile connector body that mounts to a printed circuit board. The height of the device above the printed circuit board is greater than the width of the device on the printed circuit board. The device has a receiving element that receives and electrically connects the network cable transceiver to an electrical connection element. The rotated aspect of this device controls the profile of the network cable transceiver that is inserted into the device. The electrical connection element is mechanically and electrically attached to the printed circuit board to enable data transfer to and from the network cable transceiver. Some embodiments of the invention have a variable-length electrical communication element that permits the electrical connection element to mount to the printed circuit board in a variety of positions and orientations rather than the fixed position and orientation of a low-profile network cable connector.

Growing community of inventors

Kanata, Canada

Michael W J Hogan