Abstract: The present invention relates to a system and method to efficiently move data from one data bus to another data bus in a network switch. The method includes generating a packet cycle on a first data bus. The method also includes generating a control data cycle on a second data bus. The method further includes processing the packet cycle on the first data bus after processing the control data cycle on the second data bus.

Abstract: The present invention relates to a system and method to generate a CRC (Cyclic Redundancy Check) value using a plurality of CRC generators operating in parallel. The system includes a switching module operatively coupled to a parallel data bus. The switching module generates and places a packet cycle on the parallel data bus to transmit a data packet and packet modification commands to modify the data packet. The system further includes a bridging module operatively coupled to the parallel data bus. The bridging module modifies the data packet in accordance to the packet modification commands, and generates a Cyclic Redundancy Check (CRC) value to reflect modifications made to the data packet. The bridging module utilizes a plurality of CRC generators operating in parallel to generate the CRC value quickly and efficiently.

Abstract: The present invention relates to a system and method to efficiently move data from one data bus to another data bus in a network switch. The method includes generating a packet cycle on a first data bus. The method also includes generating a control data cycle on a second data bus. The method further includes processing the packet cycle on the first data bus after processing the control data cycle on the second data bus.

Abstract: An air heating and cooling system for a building includes an expansion-type refrigeration circuit and a heat engine. The refrigeration circuit includes two heat exchangers, one of which is communicated with a source of indoor air from the building and the other of which is communicated with a source of air from outside the building. The heat engine includes a heat rejection circuit having a source of rejected heat and a primary heat exchanger connected to the source of rejected heat. The heat rejection circuit also includes an evaporator in heat exchange relation with the primary heat exchanger, a heat engine indoor heat exchanger, and a heat engine outdoor heat exchanger. The indoor heat exchangers are disposed in series air flow relationship, with the heat engine indoor heat exchanger being disposed downstream from the refrigeration circuit indoor heat exchanger.

Abstract: An air heating and cooling system for a building includes an expansion-type refrigeration circuit and a heat engine. The refrigeration circuit includes two heat exchangers, one of which is communicated with a source of indoor air from the building and the other of which is communicated with a source of air from outside the building. The heat engine includes a heat rejection circuit having a source of rejected heat and a primary heat exchanger connected to the source of rejected heat. The heat rejection circuit also includes an evaporator in heat exchange relation with the primary heat exchanger, a heat engine indoor heat exchanger, and a heat engine outdoor heat exchanger. The indoor heat exchangers are disposed in series air flow relationship, with the heat engine indoor heat exchanger being disposed downstream from the refrigeration circuit indoor heat exchanger.

Abstract: An air heating and cooling system for a building includes an expansion type refrigeration circuit and a vapor power circuit. The refrigeration circuit includes two heat exchangers, one of which is communicated with a source of indoor air from the building and the other of which is communicated with a source of air from outside the building. The vapor power circuit includes two heat exchangers, one of which is disposed in series air flow relationship with the indoor refrigeration circuit heat exchanger and the other of which is disposed in series air flow relationship with the outdoor refrigeration circuit heat exchanger. Fans powered by electricity generated by a vapor power circuit alternator circulate indoor air through the two indoor heat exchangers and circulate outside air through the two outdoor heat exchangers.

Abstract: An air heating and cooling system for a building includes an expansion type refrigeration circuit and a vapor power circuit. The refrigeration circuit includes two heat exchangers, one of which is communicated with a source of indoor air from the building and the other of which is communicated with a source of air from outside the building. The vapor power circuit includes two heat exchangers, one of which is disposed in series air flow relationship with the indoor refrigeration circuit heat exchanger and the other of which is disposed in series air flow relationship with the outdoor refrigeration circuit heat exchanger. Fans powered by electricity generated by a vapor power circuit alternator circulate indoor air through the two indoor heat exchangers and circulate outside air through the two outdoor heat exchangers.