Abstract: A memory configured to have data read therefrom is provided. The memory includes a data port including B transmitters disposed in parallel and for transferring data on both rising and falling edges of a clock, a first memory including a first data bus including N lines on which N bits can be transferred, and a second memory including a second data bus including N lines on which N bits can be transferred. The memory includes a data path controller including a data distributor disposed between the first and second memories and being connected to the data port, wherein, on the rising edge, the data distributor distributes a first data segment comprised of B bits from the first data bus to the data port and, on the falling edge, the data distributor distributes a second data segment comprised of B bits from the second data bus to the data port.

Abstract: A memory configured to have data read therefrom is provided. The memory includes a data port including B transmitters disposed in parallel and for transferring data on both rising and falling edges of a clock, a first memory including a first data bus including N lines on which N bits can be transferred, and a second memory including a second data bus including N lines on which N bits can be transferred. The memory includes a data path controller including a data distributor disposed between the first and second memories and being connected to the data port, wherein, on the rising edge, the data distributor distributes a first data segment comprised of B bits from the first data bus to the data port and, on the falling edge, the data distributor distributes a second data segment comprised of B bits from the second data bus to the data port.

Abstract: An edge detector has a digital phase locking loop in which one of the signals (e.g., the data signal) is coupled to a delay chain that develops a series of incrementally phase delayed versions of the input. Adjacent phase delayed pairs are selected, one pair at a time, and are compared to the other signal (e.g., the clock signal) to determine if an edge of the clock falls between the edges of the data signal in the selected phase pair, or falls outside the edges of the selected phase pair, on one side or the other thereof. If the clock edge falls outside the selected pair, a control signal selects another pair for comparison and the process is repeated until, for example, the data edges are aligned with the positive going edge of the clock. With a clock frequency equal to twice data frequency, the data can then be sampled on the falling edge of the clock.

Abstract: A self-timed interface (STI) in which a clock signal clocks bit serial data onto a parallel, electrically conductive bus and the clock signal is transmitted on a separate line of the bus. The received data on each line of the bus is individually phase aligned with the clock signal. The received clock signal is used to define boundary edges of a data bit cell individually for each line and the data on each line of the bus is individually phase adjusted so that, for example, a data transition position is in the center of the cell.

Abstract: An edge detector has a digital phase locking loop in which one of the signals (e.g., the data signal) is coupled to a delay chain that develops a series of incrementally phase delayed versions of the input. Adjacent phase delayed pairs are selected, one pair at a time, and are compared to the other signal (e.g., the clock signal) to determine if an edge of the clock falls between the edges of the data signal in the selected phase pair, or falls outside the edges of the selected phase pair, on one side or the other thereof. If the clock edge falls outside the selected pair, a control signal selects another pair for comparison and the process is repeated until, for example, the data edges are aligned with the positive going edge of the clock. With a clock frequency equal to twice data frequency, the data can then be sampled on the falling edge of the clock.

Abstract: A highly efficient solar heat collector characterized by a layer of light transmitting insulating (i.e., convection and infra-red radiation suppressing) material disposed between the outer surface of the collector and the heat absorptive layer thereof. Glass fibers are a particularly effective lightweight insulating material which may be used. Through use of flexible polymeric films, lightweight, low-cost solar heat collectors may be fabricated for conversion of existing structures to partial or complete solar heating. Either gaseous or liquid heat transfer fluids may be used. A novel gas-liquid heat exchange system is disclosed.