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US 4,097,859 AGranted
Three-level to two-level decoder
AssigneeBurroughs Corporation
InventorFloyd William Looschen
Life of this patent
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Abstract
Improved three-level to binary decoding means for use in decoding a three-level digital data signal received from a transmission line in a serial digital data transmission channel. Uniform loading and controlled timing of the decoding are provided.
Claims6
For use in a three-level digital data transmission system, the combination comprising:
- means for providing binary signals H, H, L and L indicative of the levels of a self-clocking three-level digital signal having high, low and intermediate levels;
- means responsive to said H, H, L and L signals for detecting data presence;
- means responsive to the detection of data presence for generating a clock signal at a predetermined time after the detection of data presence;
- and
- means responsive to said H, H, L and L signals and said clock signal for producing a binary output signal representative of a decoded binary form of said three-level signal.
2 more elements
Dependencies are inferred from the claim text.