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US 4,377,861 AGranted
Time division demultiplexer with independent data distribution
AssigneeRockwell International Corporation
InventorCharles E. Huffman
Life of this patent
Estimating the term…
Abstract
A time division demultiplexer is provided which reassigns clock positions to the various channels in a serial data stream such that different data bit positions may be assigned to a channel. This enables each channel to be independent. A single channel can access any data bit position in the serial data stream, and several or all the channels can access the same data bit position.
Claims5
Time division demultiplexer apparatus comprising, in combination:
- high speed data line means for supplying frames of data bits;
- clock recovery means, connected to said data line means, for extracting high speed clock signals from said frames of data bits;
- state controller means for providing framing configuration identification signals;
- a plurality of channel units, each connected for receiving said frames of data bits, high speed clock signals and said framing configuration identification signals;
- and
- microprocessor means connected to said clock recovery means, said state controller means, and said plurality of channel units for supplying to said channel units framing configuration address signals which dynamically assign clock positions to said channels whereby any channel can pass any data bit in a frame of data bits when the framing configuration address signal matches the framing configuration identification signal.
3 more elements
A time division demultiplexer comprising:
- a receive unit for receiving a serial high speed data stream having a plurality of multiplexed channels in a predetermined framing sequence configuration, said receive unit including:
- clock recovery means for extracting high speed clock signals from said data stream;
- and
- state controller means for providing framing configuration identification;
- a plurality of channel units, each receiving said high speed data stream, said high speed clock signals and said framing configuration identification;
- and
- microprocessor means receiving said framing configuration identification and delivering dynamically assigned clock position's to said channel units for controlling which channel data bits are passed through which channel unit, each channel unit outputting any number of channels in said data stream independently of the other channel units.
4 more elements
Dependencies are inferred from the claim text.