US Patent No: 7,568,207
Number of patents in Portfolio can not be more than 2000
Cable drop monitor with upstream signalling
Stats
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Jul 28, 2009
Issued date -
Jun 23, 2000
filing date -
09/599,542
serial no -
In Force
status
Importance
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Abstract
A time slot is provided for each terminal unit or cable drop of a signal distribution system in a repeated sequence to communicate detected conditions “upstream”. The time slots are defined in accordance with a time base responsive to broadcast time signals. An identification of each terminal unit is transmitted from a directional coupler corresponding to the terminal unit or cable drop after latching an output of a condition detector responsive to detection of a condition by a sequence of tones or tone pairs, preferably using circuits ubiquitous in the telecommunications industry. A printer is provided for each channel at a central facility and the transmitting terminal unit is identified in response to another time base operating synchronously with the time base defining the time slots and assigning the time slots to respective terminal units. Provision is made for synchronization of counters, error checking and control of polling frequency.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,874,992 Cable television data bit path error analyzer | 18 | 1996 | |
| 6,260,193 Synchronization of decoders in a bi-directional CATV network | 8 | 1998 | |
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| 5,767,895 CATV telephone system | 32 | 1995 | |
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| 6,069,947 Communication system architecture and operating protocol therefor | 50 | 1997 | |
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| 6,480,748 Facility management platform for a hybrid coaxial/twisted pair local loop network service architecture | 44 | 1998 | |
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| 5,563,883 Dynamic channel management and signalling method and apparatus | 61 | 1994 | |
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| 6,598,232 Hybrid amplifier-regenerator for optimizing cable network transmissions | 14 | 1998 | |
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| 5,808,671 Apparatus and method for remote monitoring of video signals | 48 | 1995 | |
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| 4,320,497 Method for testing communication paths | 5 | 1979 | |
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| 4,553,161 Upstream data packet time slot synchronization with downstream VBI for two-way CATV system | 72 | 1984 | |
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| 5,768,280 Two-way broadband CATV communication network protocol and monitoring technology | 52 | 1996 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Jan 28, 2013 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jan 28, 2017 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 28, 2021 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |