US5466975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switched termination for bus tap-off line
Assignee: Whitaker LLC
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Filing: 1993-08-13
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Granted: 1995-11-14
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Expires: 2013-08-13
Abstract
Abstract An arrangement for terminating a tap-off line (40) between a bus line (14) and a bi-directional signal driver (38). The arrangement includes a resistor (42) serially connected in the tap-off line and a controllable switch (44) connected across the resistor. There is also provided means (46, 48) for controlling the switch to bypass the resistor when the bi-directional signal driver transmits signals to the bus.
Inventors
- 👤 Kenneth B. Wratten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:41
CPC Classifications
H; H04; H04L; H04L25/00; H04L25/02; H04L25/0264; H04L25/0298
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
76 words
An arrangement for terminating a tap-off line (40) between a bus line (14) and a bi-directional signal driver (38), comprising a resistor (42) serially connected in the tap-off line between a bus line (14) and a bi-directional signal driver (38); controllable switch means (44) connected across said resistor for selectively bypassing said resistor; and means (46, 48) for controlling said switch means to bypass said resistor when said bi-directional signal driver transmits signals to said bus.
Claim 2
Dependent Claim
76 words
An arrangement for terminating a tap-off line (40) between a bus line (14) and a bi-directional signal driver (38), comprising a resistor (42) serially connected in the tap-off line between a bus line (14) and a bi-directional signal driver (38); controllable switch means (44) connected across said resistor for selectively bypassing said resistor; and means (46, 48) for controlling said switch means to bypass said resistor when said bi-directional signal driver transmits signals to said bus.
Claim 3
Dependent Claim
14 words
The arrangement according to claim 1 wherein said switch means includes a CMOS switch.
Claim 4
Dependent Claim
90 words
The arrangement according to claim 1 further including a first circuit board (10) and a second circuit board (16), and wherein: said bus line (14) is on said first circuit board (10); said signal driver (38) is on said second circuit board (16); said first circuit board (10) has a connector (12-2) mounted thereto; said second circuit board (16) is mounted to said connector (12-2); said tap-off line (40) passes through said connector (12-2); and said resistor (42) and said switch means (44) are on said second circuit board (16).
Claim 5
Dependent Claim
119 words
The arrangement according to claim 1 further including a first circuit board (10) and a second circuit board (16), and wherein: said bus line (14) is on said first circuit board (1O); said signal driver (38) is on said second circuit board (16); said first circuit board (10) has a connector (12-1) mounted thereto; said second circuit board (16) is mounted to said connector (12-1); said tap-off line (40) passes through said connector (12-1); said resistor (42) and said switch means (44) are on said first circuit board (10); and said means for controlling said switch means includes an electrical line (48) extending from said second circuit board (16) to said first circuit board (10) through said connector (12-1).
References Cited (Backward Citations)
US5166561A
Cited
US5291080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-11-13 | 1999-05-15 | 1999-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-11-13 | 2003-05-15 | 2003-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-11-13 | 2007-05-15 | 2007-11-14 | $7700.00 | Window Closed / Lapsed |