Abstract
A subscriber unit has a processor. The processor provides an output phase signal corresponding to a selected output digital frequency. A tuning register buffers the phase signal. A lookup table has two sets of predefined stored values pertaining to the amplitude of a signal for a single quadrant. The predefined stored values comprise coarse angle approximations and fine angle approximations. A sine and cosine generator receives the phase signal and generates sine and cosine waveforms utilizing amplitude values obtained from the lookup table. The phase signal includes phase data and specifies the quadrant and the algebraic sign of the phase data. The sine and cosine generator accessing the lookup table differently depending upon the quadrant and sine of the phase data such that the lookup table provides an amplitude value from the sets of predefined stored values based on the phase data. A modulator combines the sine and cosine waveforms to produce the selected output digital frequency and modulates digital frequency.
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| 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 | ||||
| 2G | 13/09/2009 | ISLD-200911-005 | INTERDIGITAL INC |
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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| Declaration Date | Declaration Reference | Declaring Company | Specification Number | |||||||
| US5644602A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | Yes | Basis Patent | ||||
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| US5644602A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
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Yes | Basis Patent | |||
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| US6449317B1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
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No | Family Member | |||
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No | Family Member | |||
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No | Family Member | |||
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No | Family Member | |||
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| US2003189988A1 | Not Available | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
| US2003189988A1 | 2G | 13/09/2009 | ISLD-200911-005 | INTERDIGITAL INC |
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No | Family Member | |||
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| US6724851B2 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
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No | Family Member | |||
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| US6078629A | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
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| US6078629A | 2G | 13/09/2009 | ISLD-200911-005 | INTERDIGITAL INC |
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No | Family Member | |||
| US2004190645A1 | 2G | 07/04/2004 | ISLD-200407-005 | INTERDIGITAL INC | No | Family Member | ||||
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| US2004190645A1 | 2G | 13/09/2009 | ISLD-200911-005 | INTERDIGITAL INC |
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