Abstract: A power module including at least one power device, an insulation thermally conductive layer, and a heat dissipation device is provided. The insulation thermally conductive layer has a patterned circuit layer. The power device is disposed on the patterned circuit layer and is electrically connected to the patterned circuit layer. The heat dissipation device includes a heat dissipation plate and a heat dissipation base. The heat dissipation plate has a first surface and a second surface opposite to each other, and the insulation thermally conductive layer is disposed on the first surface. The heat dissipation base is partially bonded to the heat dissipation plate, and a chamber is formed between the heat dissipation plate and the heat dissipation bases. The heat dissipation base has a plurality of first heat dissipation bumps located in the chamber.

Abstract: An adapter for connecting a first low bit rate transmission link and a second high bit rate transmission link is disclosed. The adapter receives frames transmitted via the first link. The frames are of variable length and include a flag, an address field, a control field, a variable length data field and a frame check sequence. Each frame also includes after the flag a length code indicative of the frame length, which length code does not alter a frame check sequence of the frame. The adapter includes a processor which determines for each frame in response to the length code a specific time at which the adapter begins transmitting the frame out onto the second transmission link. The specific time is chosen for each frame so that the completion of the transmitting of the frame out on the second link substantially coincides with the completion of the receiving of the frame from the first transmission link. The length code of each frame is removed when it is transmitted out over the second transmission link.

Abstract: A system and method are disclosed for adapting the rate of a data terminal equipment having a V-series type interface connected to an integrated services digital network which supports more than two simultaneous communications. A V.110 rate adapter is provided which receives user data at a user data rate from the data terminal equipment and outputs a bitstream containing the user data at a B-channel data rate. A fractional rate adapter is also provided which receives this bitstream and outputs a second bitstream at a lower subchannel data rate using a bit discarding technique.