US Patent No: 6,581,208
Number of patents in Portfolio can not be more than 2000
Up-converter and down-converter for in-building CATV system
Stats
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Jun 17, 2003
Issued date -
Feb 18, 2000
filing date -
09/507,713
serial no -
Expired
status
Importance
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Abstract
An in-building CATV system having a down-converter for converting the in-building upward signal to the signal for a bi-directional CATV system provided with a high-pass filter disposed between an internal terminal and a converter for eliminating input of the downward signal passed through the downward signal path and selectively passing the in-building upward signal, a low-pass filter disposed between the converter and an external terminal for eliminating the downward signal inputted from the external terminal and selectively passing the upward signal outputted from the converter, a high-pass filter disposed between the external terminal and the downward signal path for eliminating input of the upward signal outputted from the converter and selectively passing the downward signal inputted from the external terminal and a low-pass filter disposed between the downward signal path and the internal-terminal for eliminating the in-building upward signal inputted from the internal terminal and selectively passing the downward signal.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 6,151,559 System and method for characterizing undesirable noise of a signal path within a selected frequency band | 14 | 1997 | |
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| 5,437,052 MMDS over-the-air bi-directional TV/data transmission system and method therefor | 40 | 1993 | |
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| 6,094,211 TV and data cable system ingress noise blocker | 31 | 1996 | |
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| 6,160,571 Compact cable tuner/transceiver | 35 | 1999 | |
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| 4,494,138 Segmented upstream management for cable television | 32 | 1983 | |
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| 5,548,811 Automatic frequency control circuit selectively using frequency-divided local oscillator signal or pilot signal | 16 | 1994 | |
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| 5,073,930 Method and system for receiving and distributing satellite transmitted television signals | 105 | 1989 | |
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| 5,835,128 Wireless redistribution of television signals in a multiple dwelling unit | 112 | 1996 | |
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| 4,569,084 Frequency converter, especially CATV converter | 27 | 1984 | |
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| 5,230,086 Narrow band communication system | 35 | 1990 | |
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| 6,212,397 Method and system for controlling remote multipoint stations | 16 | 1997 | |
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| 5,557,319 Subscriber return system for CATV full service networks | 32 | 1994 | |
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| RE31639 Bidirectional unicable switching system | 17 | 1981 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 17, 2014 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| 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 |