Abstract
A subscriber unit for a wireless digital telephone system is disclosed. An equalizer for receiving I and Q samples is disclosed which is in the form. The I and Q samples are complex sample pairs provided at a frequency. The equalizer receives a training signal in the form of complex I and Q sample pairs. A training signal is affected by undesirable characteristics that might be present in the I and Q samples. A comparator compares the actual input training signal with the desired output to obtain a set of weighting coefficients for the equalizer to produce the desired output. A frequency correction circuit provides a corrected frequency signal for the frequency of the sample pairs from the weighting coefficients.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
Specification Information
Specification Information
Technologies
Family Information
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| FR2602622B1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
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| FR2602928B1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
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| FR2607336A1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
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| FR2607336A1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| FR2607336A1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| FR2607336B1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| FR2607336B1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| FR2607336B1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
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| FR2602938A1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
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| FR2602938A1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
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| FR2602938B1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| FR2602938B1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| FR2602938B1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| FR2602938B1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| FR2602929A1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| FR2602929A1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| FR2602929A1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| FR2602929A1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| FR2602929B1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| FR2602929B1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| FR2602929B1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| FR2602929B1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| FR2602944A1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| FR2602944A1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| FR2602944A1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| FR2602944A1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| FR2602944B1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| FR2602944B1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| FR2602944B1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| FR2602944B1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| FR2602933A1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| FR2602933A1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| FR2602933A1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| FR2602933A1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| FR2602933B1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| FR2602933B1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| FR2602933B1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| FR2602933B1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| FR2602934A1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| FR2602934A1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| FR2602934A1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| FR2602934A1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| FR2602934B1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| FR2602934B1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| FR2602934B1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| FR2602934B1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2194711A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2194711A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2194711A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2194711A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2194711B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2194711B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2194711B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2194711B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2194417A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2194417A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2194417A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2194417A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2194417B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2194417B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2194417B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2194417B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2194404A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2194404A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2194404A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2194404A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2194404B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2194404B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2194404B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2194404B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2194418B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2194418B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2194418B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2194418B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2194708A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2194708A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2194708A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2194708A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2194708B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2194708B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2194708B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2194708B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2194403A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2194403A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2194403A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2194403A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2194403B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2194403B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2194403B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2194403B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2198915A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2198915A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2198915A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2198915A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2198915B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2198915B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2198915B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2198915B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2198916A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2198916A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2198916A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2198916A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2198916B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2198916B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2198916B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2198916B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2199214A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2199214A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2199214A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2199214A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2199214B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2199214B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2199214B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2199214B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2199206A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2199206A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2199206A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2199206A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2199206B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2199206B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| GB2199206B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| GB2199206B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| HK64194A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| HK64194A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| HK64194A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| HK64194A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| IE67260B1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| IE67260B1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| IE863045L | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| IE863045L | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| IL80497A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| IL80497A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| IL80497A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| IL80497A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| IT1207336B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| IT1207336B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| IT1207336B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| IT1207336B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| JPH0773384B2 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| JPH0773384B2 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| JPS6343430A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| JPS6343430A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| JP3110681B2 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| JP3110681B2 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| JP3110681B2 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| JP3110681B2 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| JPH09331581A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| JPH09331581A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| JPH09331581A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| JPH09331581A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| JP3345334B2 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| JP3345334B2 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| JP3345334B2 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| JP3345334B2 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| JPH10290188A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| JPH10290188A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| JPH10290188A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| JPH10290188A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| KR900005142B1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| KR900005142B1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| KR900005142B1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| KR900005142B1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| MX164955B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| MX164955B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| MX164955B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| MX164955B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NL192170B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| NL192170B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| NL192170B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NL192170B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NL192170C | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| NL192170C | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| NL192170C | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NL192170C | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NL8700645A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| NL8700645A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| NL8700645A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NL8700645A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NL9002798A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NL9002798A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NL9002800A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NL9002800A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NL9002801A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NL9002801A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NL9002802A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NL9002802A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NL9002803A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NL9002803A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NL9002805A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NL9002805A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NL9002806A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NL9002806A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NO172090B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| NO172090B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| NO172090B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NO172090B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NO172090C | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| NO172090C | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| NO172090C | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| NO172090C | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| PT85503A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| PT85503A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| PT85503A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| PT85503A | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| PT85503B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| PT85503B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| PT85503B | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| PT85503B | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| SE8604661L | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| SE8604661L | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| SE518848C2 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| SE518848C2 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| SE518848C2 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| SE518848C2 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| SE9402221L | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| SE9402221L | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| SE9402221L | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| SE9402221L | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| SE523252C2 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| SE523252C2 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| SE523252C2 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| SE523252C2 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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Technologies
Multiple access
Product
Use Cases
Services
Claim
1. An interpolator for varying the sampling rate of a digital signal having I and Q components at an initial frequency, comprising an input for said signal; a memory for the I/Q component serially coupled to a memory for the Q/1 component; and 65 8 GB2194418A 8 means for applying an input of a predetermined frequency to both of said memories, whereby multiple IQ samples are demultiplexed at their initial frequencies and then resampled and remulti plexed at said predetermined frequency.
2. The interpolator of claim 1 wherein means are included for weighting the resulting I and Q samples by filter coefficients, a digital-to-analog converter for converting said remultiplexed I and 5 Q samples to analog signals, and means to integrate said analog signals.
3. A subscriber unit for a wireless digital telephone system incorporating an interpolator according to claim 1 or 2.
4. A subscriber unit according to claim 3, further comprising:', 'means for selectively establishing a transmit or receive mode for the unit; 10 a baseband processor for receiving an input signal from an input source, said input signal constituting a digitized bit stream wherein each given number of successive bits defines a symbol, transcoding said input signal in accordance with a predetermined code and acting as a function control means for said unit; storage means coupled to said baseband processor for storing information associated with 15 functions controlled by said baseband processor and information supplied thereto; control means coupled to said baseband processor in a manner permitting said control means to access said baseband processor and to obtain information stored in said storage means and available to said baseband processor; said control means including programming means therefor, interpolator means for increasing 20 the sampling rate of the transcoded signal, and a frequency translator means for performing a time multiplexed quadrature mixing and translating the entire frequency spectrum of the output from said interpolator means to a second frequency spectrum to provide a time multiplexed digital signal; a digital to analog converter for receiving the time multiplexed digital signal from said fre- 25 quency translator means and converting it into an analog signal; and means for converting said analog signal to an amplified IF signal.
5. The unit of claim 4 wherein said amplified IF signal is convertable by said control means to a signal of a predetermined assigned frequency; and amplifying means are provided for amplifying said signal of predetermined assigned frequency 30 to provide an RF signal.
6. The unit of claim 5 wherein a demodulator means is coupled to said control means for converting a second IF signal back to a bit stream.
7. The subscriber unit of claim 5 wherein that portion of said control means which is adapted to convert said IF signal to said signal of a predetermined assigned frequency comprises 35 a frequency synthesizer having a pair of outputs wherein a first output is offset from a second output by a predetermined frequency, said first output acting to generate a frequency which, when combined with the frequency of the IF signal, provides a signal of a predetermined desired frequency, and said second output being combined with a received signal to produce a signal having the same frequency as said IF signal. 40
8. The subscriber unit of claim 4 wherein said baseband processor is adapted to provide echo cancellation.
9. The subscriber unit of claim 4 wherein said control means includes a modem processor that is in communication with said baseband processor via a direct memory access that prevents simultaneous access to both the baseband processor and modem processor, said modem 45 processor acting to control said baseband processor
10. The subscriber unit of claim 4 wherein said control means may selectively lock out the modem processor from its control of the baseband processor
11. The subscriber unit of claim 4 wherein a disconnect means is provided to selectively disconnect said input source from said baseband processor, said disconnect means being coup- 50 led to a conversion means adapted to receive an originating digital signal from said control means and convert it to an analog signal, said analog signal forming a reflected signal being convertable to a reflected digital signal by said conversion means, said baseband processor being adapted to compare said reflected digital signal with said originating digital signal to determine the presence of any undesired impedences or connections in the input circuit. 5512. The subscriber unit of claim 4 wherein selection means are coupled to said control means for determining whether a particular channel is a control channel or a voice channel
13. The subscriber unit of claim 4 wherein a training mode is established by means of a loopback between the means for converting said analog signal to an amplified IF signal and said control means via a filter means, said loopback being operative to produce correction constants, 60 said correction constants being storable in said storage means
14. A subscriber unit according to any one of claims 3 to 13 further comprising a modem comprising a modem processor including a DPSK converter coupled to a filter; said converter having a digital bit input and comprising an inverse Gray coding function whose 65 9 GB2194418A 9 output is applied to a phase quantizer for determining the absolute value of the current symbol, said quantizer being coupled to a differential encoder for providing a differentially encoded phase value that represents the modulo sum of the current phase and the prior absolute phase, said modulo sum being computable to form the I and Q components of the current symbol; and and filter being adapted to create an oversampled PSK waveform from said I and Q compo- 5 nents that provide a time division multiplexed signal
15. A subscriber unit according to any one of claims 2 to 14, further comprising a deglitch- ing system for removal of glitch spikes occurring during the transition periods from digital signals to analog signals comprising means to mix a blanking signal from a timing system with the analog signal during said transition periods, whereby the output is returned to an intermediate 10 reference level
16. A subscriber unit according to any one of claims 3 to 15, further comprising:', 'selection means to determine the type of channel in an incoming signal and the mode of said unit, said selection means comprising means to produce repetitive frames at predetermined intervals wherein a portion of each of 15 said intervals constitutes an AM hole, the duration of said AM hole determining whether a particular channel is a control channel or a voice channel
17. The subscriber unit of claim 16 wherein a portion of the first half of each frame constitutes a receive mode and a. portion of the second half of each frame constitutes a transmit mode, each of said portions comprising a slot, each of said slots containing, as part of its initial 20 data, a unique word for establishing timing for reception of remaining data in the slot
18. A subscriber unit according to any one of claims 3 to 17, further comprising a frequency synthesizer for converting an IF signal to a signal of a predetermined assigned frequency comprising a frequency synthesizer having a pair of outputs wherein a first output is offset from a second output by a predetermined frequency, said first output acting to generate a frequency 25 which, when combined with the frequency of the IF signal, provides a signal of a predetermined desired frequency, and said second output being combined with a received signal to produce a signal having the same frequency as said IF signal
19. The subscriber unit of claim 18 wherein said synthesizer is coupled to a synchronization detector which is coupled to a synchronous translator, said detector acting to detect a lack of 30 synchronization between the frequency of a signal received from said synthesizer and the frequency of a signal received from the synchronous translator and to provide an output signal when such lack of synchronization is detected.
20. A subscriber unit according to any one of claims 3 to 19 further including a system comprising: 35 an input for applying time multiplexed I and Q samples, in the form of complex samples pairs/symbol, to a demultiplexer; an equalizer coupled to said demultiplexer for receipt therefrom of the dumultiplexed I and Q samples; means for applying a plurality of training signals to said equalizer, said training signals corre- 40 sponding to undesirable characteristics that might be present in the demultiplexed I and Q samples; and means for comparipg the actual inputs applied to said equalizer with a set of desired outputs during the presentations of each of said training signals to obtain a set of weighting coefficients.
21. The unit of claim 20 wherein said equalizer is coupled to a storage means for storage of 45 said weighting coefficients.
22. The system of claim 20 wherein said equalizer is coupled to arctangent means adapted to receive the output of said equalizer and to produce the arctangent of the ratio of the equalized Q and I samples to produce a signal representing phase; said equalizer being also coupled to a course frequency control means which is adapted to 50 receive said equalized I and Q samples, sum them to produce a lower sideband and simultane ously obtain a difference therebetween to produce an upper sideband, then obtain the magni tudes of said sidebands and thereafter obtain the difference between these magnitudes to represent a frequency error; said arctangent means being coupled to frequency correction means which is adapted to 55 provide a corrected frequency signal; and summing means coupled to both said course frequency control means and to said frequency correction means, said surning means acting to sum the outputs of said course frequency control means and said frequency correction means.
23. A subscriber unit according to any one of claims 3 to 22, further comprising a symbol 60 timing tracking and AFC system comprising and input for a detected phase signal; means for subtracting a phase correction value from the detected phase signal to provide a corrected phase signal; means for quantizing the phase of the corrected phase signal to a predetermined increment 65 GB2194418A 10 means for subtracting the quantized phase signal from the corrected phase signal to provide a phase error signal; and means for obtaining said phase error signal and computing both a phase correction value and a frequency correction signal therefrom.
24. A subscriber unit according to any one of claims 3 to 23, further comprising a digital 5 time-multiplexed quadrature frequency upconverter for converting a first signal centered at an initial frequency to a second signal centered at a second frequency comprising an input means for said first signal; an input means for a time-multiplexed quadrature carrier signal; a multiplier for multiplying time-multiplexed signals with said time- multiplexed carrier 10 a digital-to-analog converter for converting said multiplied signal to an analog signal; and means for integrating the resultant analog signal.
25. A subscriber unit according to any one of claims 3 to 24, further comprising a sample - and hold amplifier and analog-to-digital converter system which converts a received analog signal to time multiplexed complex data samples comprising 15 means for applying an input signal; means for applying a sampling clock; means for sampling and then holding an input signal; and means for converting the held analog signal to a digital signal.
26. An interpolator substantially as hereinbefore described and as shown in Fig. 5 of the 20 accompanying drawings.', 'Published 1988 at The Patent Office, State House, 66/71 High Holborn, London WC 1 R 4TP. Further copies may be obtained from The Patent Office. Sales Branch, St Mary Cray, Orpington, Kent BF15 3RD. Printed by Burgess & Son (Abingdon) Ltd. Con. 1/87.']
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SUMMARY
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.