摘要:
An energy storage system and corresponding method, provides an efficient use of stored energy and more regulated power to an output terminal in the event of an interruption in line input power. In one embodiment, an energy storage system has a pulse width modulation (PWM) DC-DC converter module configured to convert line input power to a first regulated output at an output terminal. A pump storage module is coupled to the PWM DC-DC converter module at the output terminal and stores energy from the first regulated output and converts the stored energy to a second regulated output. The energy storage system has a logic unit coupled to the converter module to cause the converter module and pump storage module to transition power at the output terminal from the first regulated output power to the second regulated output power in an event of interruption in the line input power.
摘要:
A digital packet access network for transporting voice and data signals in the local loop between a central office location and a plurality of remote local users. The network architecture may also include: (1) a dual-pipelined structure for separately transporting the voice and data signals; (2) a mechanism for prioritizing the transport of the voice signals; or (3) a method of synchronizing the timing of the voice signals to a telephone switch.
摘要:
A technique for multiplexing high speed computed data with digitized voice signals onto a fiber optic cable for transfer to a local central office. The data packets of a number of computers are networked by way of a distributed hub that extends to residences, offices, apartments, etc. The data packets are switched outside the switching fabric of a local central office and routed to the internet or elsewhere. Command signals that are for accessing the internet are transmitted and received as 10 MHz Ethernet data packets on the distributed hub.
摘要:
Methods and apparatus for managing a packet buffer memory are disclosed. One method includes providing a memory arranged as a plurality of cells identified by cell id, each cell having a granularity of k individual memory addresses. A cell list indexed by cell id is provided. The cell list includes a free cell list identifying cells available for storing data as a linked list, wherein a beginning of the free cell list identifies a starting cell id. A cell list indexed by cell id is provided. The free cell list includes cells available for storing data as a linked list, wherein a beginning of the free cell list identifies a starting cell id. Each portion of a packet is stored in cells indicated by and in a sequence indicated by traversing the cell list beginning with the starting cell id.
摘要:
A technique for multiplexing high speed computed data with digitized voice signals onto a fiber optic cable for transfer to a local central office. The data packets of a number of computers are networked by way of a distributed hub that extends to residences, offices, apartments, etc. The data packets are switched outside the switching fabric of a local central office and routed to the internet or elsewhere. Command signals that are for accessing the internet are transmitted and received as 10 MHz Ethernet data packets on the distributed hub.