Pulse or digital communications – Pulse code modulation – Differential
Reexamination Certificate
2006-05-30
2006-05-30
Tran, Khai (Department: 2637)
Pulse or digital communications
Pulse code modulation
Differential
C375S247000, C375S257000, C379S403000, C379S413040, C330S086000
Reexamination Certificate
active
07054372
ABSTRACT:
A digital transmission line tap circuit is provided for applying a non-intrusive tap on a digital transmission line thus allowing the transmission signal to be monitored or utilized by another piece of transmission equipment. The tap circuit incorporates all the required functions of the tap in one circuit and eliminates large components, such as termination transformers.
REFERENCES:
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patent: 4868516 (1989-09-01), Henderson et al.
patent: 5333192 (1994-07-01), McGinn
patent: 5519342 (1996-05-01), McEwan
patent: 5881148 (1999-03-01), Koenig et al.
patent: 6205218 (2001-03-01), Fischer et al.
Hewlett Packard 3787B Technical Manual, Publication Date: on or before Jan. 1, 1990, Place of Publication: Unknown.
Chang Edith
Lucent Technologies - Inc.
Tran Khai
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