US Patent No: 8,189,698
Number of patents in Portfolio can not be more than 2000
Communication apparatus
Stats
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May 29, 2012
Issued date -
Dec 22, 2008
filing date -
12/341,420
serial no -
In Force
status
Importance
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Abstract
A wave detecting section of a receiver has a first wavelet transformer involving a plurality of wavelet filters orthogonal to each other for performing a wavelet transform on received waveform data, a Hilbert transformer for performing a Hilbert transform on the received waveform data, a second wavelet transformer having the same configuration as that of the first wavelet transformer for performing a wavelet transform on outputs from the Hilbert transformer, a code converter for inverting the codes of outputs in odd-numbered places among outputs from the second wavelet transformer, a level converter for correcting fluctuations of outputs from the code converter attributable to a ripple of the Hilbert transformer, and a complex data generator for generating complex data, by defining outputs of the first wavelet transformer as in-phase components of the complex information and outputs from the level converter as orthogonal components of the complex information.
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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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| 5,497,398 Multi-carrier transceiver | 72 | 1993 | |
| 5,636,246 Multicarrier transmission system | 118 | 1994 | |
| 5,631,610 Single side-band modulation system for use in digitally implemented multicarrier transmission systems | 29 | 1996 | |
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| 5,995,539 Method and apparatus for signal transmission and reception | 95 | 1996 | |
| 6,532,256 Method and apparatus for signal transmission and reception | 56 | 2001 | |
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| 6,473,409 Adaptive filtering system and method for adaptively canceling echoes and reducing noise in digital signals | 50 | 1999 | |
| 6,496,795 Modulated complex lapped transform for integrated signal enhancement and coding | 64 | 1999 | |
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| 6,952,441 Method to determine a channel characteristic, and discrete wavelet transmitter and receiver to perform the method | 16 | 2001 | |
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| 6,493,666 System and method for processing data from and for multiple channels | 13 | 1999 | |
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| 6,456,657 Frequency division multiplexed transmission of sub-band signals | 17 | 1999 | |
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| 7,020,226 I/Q distortion compensation for the reception of OFDM signals | 32 | 2002 | |
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| 2003/0112,896 Multi-channel communications transceiver | 25 | 2002 | |
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| 6,704,317 Multi-carrier LAN modem server | 35 | 1998 | |
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| 6,487,574 System and method for producing modulated complex lapped transforms | 47 | 1999 | |
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| 5,388,182 Nonlinear method and apparatus for coding and decoding acoustic signals with data compression and noise suppression using cochlear filters, wavelet analysis, and irregular sampling reconstruction | 41 | 1993 | |
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| 7,206,359 System and method for orthogonally multiplexed signal transmission and reception | 16 | 2003 | |
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| 6,947,509 Oversampled filter bank for subband processing | 24 | 1999 | |
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 | Nov 29, 2015 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Nov 29, 2019 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 29, 2023 |
| 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 |