High speed serial digital data to analog signal converter

Details High speed serial digital data to analog signal converter High speed serial digital data to analog signal converter

1994-01-25

1997-03-25

Gaffin, Jeffrey A.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

341144, 341 56, 341 57, H03M 166

Patent

active

056149050

ABSTRACT:
An Ethernet-type local area network having multiport repeaters and nodes within a specified distance of the hub is able to communicate high speed digital data over multiple pairs of twisted-pair wires using long symbol group-type ternary coding. Bundle mode termination minimize impedance mismatches. Low-frequency collision detection circuitry permits detection of packet collisions on an a.c.-coupled network. Precise serialized digital to analog conversion is realized using chains of gates to form delay elements with precise delays.

REFERENCES:
patent: 4947171 (1990-08-01), Pfeifer
patent: 5025443 (1991-06-01), Gupta
patent: 5444406 (1995-08-01), Horne

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