US Patent No: 6,850,735
Number of patents in Portfolio can not be more than 2000
System and method for signal classiciation of signals in a frequency band
Stats
-
Feb 1, 2005
Issued date -
Sep 18, 2002
filing date -
10/246,364
serial no -
In Force
status
Importance
Loading Importance Indicators...
Abstract
A system and method for classifying signals occurring in a frequency band. One or more characteristics of one or more signals in the frequency band are detected using any suitable technology, such as a device that can generate characteristics of signal pulses detected in the frequency band. Data pertaining to the signal pulses is accumulated over time. The accumulated signal data is compared against reference data associated with known signals to classify the one or more signals in the frequency band based on the comparison. The accumulated data may include one or more characteristics selected from the group consisting of: pulse center frequency, pulse bandwidth, pulse duration, time between pulses and number of different active pulses, and wherein the reference data associated with each of a plurality of known signals comprises one or more characteristics selected from the group consisting of: pulse center frequency, pulse bandwidth, pulse duration and time between pulses. The accumulated signal data is compared against the reference data, and depending on the degree of match with reference data, a signal can be classified. Additional levels of signal classification processing may be performed.
Loading the Abstract Image...
First Claim
Related Publications
Loading Related Publications...
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
|
|
|||
| 6,084,919 Communication unit having spectral adaptability | 93 | 1998 | |
| 6,240,282 Apparatus for performing non-linear signal classification in a communications system | 24 | 1998 | |
| 6,385,434 Wireless access unit utilizing adaptive spectrum exploitation | 66 | 1998 | |
|
|
|||
| 5,608,727 Method and system for management of frequency spectrum among multiple applications on a shared medium | 47 | 1995 | |
| 5,832,038 Method and apparatus for classifying a multi-level signal | 16 | 1996 | |
|
|
|||
| 6,240,372 System for surveillance of spectral signals | 33 | 1997 | |
|
|
|||
| 2002/0167,995 Radiofrequency signal receiver with means for improving the reception dynamic of said signals | 2002 | ||
|
|
|||
| 4,979,211 Classifier for high speed voiceband digital data modem signals | 15 | 1990 | |
|
|
|||
| 5,210,820 Signal recognition system and method | 228 | 1990 | |
|
|
|||
| 5,905,949 Cellular telephone fraud prevention system using RF signature analysis | 30 | 1995 | |
|
|
|||
| 4,271,523 Contention interference detection in data communication receiver | 23 | 1979 | |
|
|
|||
| 4,501,020 Spectrum surveillance receiver system | 34 | 1982 | |
|
|
|||
| 5,144,642 Interference detection and characterization method and apparatus | 44 | 1990 | |
|
|
|||
| 6,519,541 Multiple frequency signal detector | 13 | 1999 | |
|
|
|||
| 5,651,030 Receiver with signal classifier | 17 | 1991 | |
|
|
|||
| 4,845,707 Frequency division multiplex/FM modulation recognition system | 11 | 1988 | |
|
|
|||
| 6,463,294 Reducing interference in a mobile communications system | 24 | 1999 | |
|
|
|||
| 5,687,163 Method and apparatus for signal classification using I/Q quadrant histogram | 12 | 1995 | |
|
|
|||
| 4,597,107 Modulation detector and classifier | 40 | 1983 | |
|
|
|||
| 5,912,922 Method and apparatus for modulation differentiation | 14 | 1998 | |
|
|
|||
| 5,353,346 Multi-frequency signal detector and classifier | 61 | 1992 | |
|
|
|||
| 6,466,614 Method and apparatus for classifying a baseband signal | 9 | 2001 | |
|
|
|||
| 2003/0040,277 Apparatus and method for measuring and identifying sources of communications interference | 11 | 2001 | |
|
|
|||
| 4,947,338 Signal identification method | 13 | 1986 | |
|
|
|||
| 4,227,255 Signal classifier | 38 | 1979 | |
|
|
|||
| 5,005,210 Method and apparatus for characterizing a radio transmitter | 44 | 1987 | |
|
|
|||
| 2002/0155,811 System and method for adapting RF transmissions to mitigate the effects of certain interferences | 49 | 2001 | |
|
|
|||
| 5,432,862 Frequency division, energy comparison, source detection signal processing system | 17 | 1993 | |
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 | Aug 1, 2016 |
| 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 |