Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via time channels
Patent
1998-03-16
1999-10-26
Hsu, Alpus H.
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via time channels
370366, H04J 322
Patent
active
059740582
ABSTRACT:
A plurality of transmitters are multiplexed to a hub through clocked serial links. Timing problems that may arise when switching between links are eliminated with a system including a group serial receiver for each link for performing serial to parallel conversion of data sent over the serial link, outputing a group clock signal based on the serial clock signal, outputing parallel data clocked by the group clock signal, and determining a data enable signal from the serial link. A select signal for determining the serial link being read by the hub selects the corresponding group clock, parallel data, and data enable. A load control clocks the selected parallel data into a first-in, first-out buffer using the selected group clock when the selected data enable is asserted. When the selected data enable is not asserted, the load control is held in reset and, hence, is insensitive to irregularities in the selected clock signal due to switching between links. Data is clocked from the buffer by a local clock.
REFERENCES:
patent: 4759014 (1988-07-01), Decker et al.
patent: 5867543 (1999-02-01), Roberts et al.
patent: 5903616 (1999-05-01), Rangan et al.
Burns William
Lucas Michael
Hsu Alpus H.
Slavitt Mitchell
Storage Technology Corporation
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