Abstract: The present invention encompasses an electronic device operated in a communication system (for example 1XEV-DO, 1XEV-DV, CDMA, etc). The electronic device receiving a signal from a base station, the signal containing signaling information and data packets. The electronic device processing portion of the signal during the current frame and simultaneously storing the received signal prior to de-spreading, for further processing during the following frame. The electronic device further processing previously stored signal, during current frame.

Abstract: The present invention is directed to a method and apparatus for providing a notification of a received message when the user may not have received the initial alert. An auto notification feature is provided, such that if the apparatus upon receiving a message detects no movement, then an additional alert is provided upon the apparatus detecting a movement. Also, if the user has not acknowledged the receipt of a message, then the most efficient method of providing alert is used for all the subsequent messages received.

Abstract: Mobile terminals having a plurality of planar inverted-F antennas placed in close proximity of each other and methods of fabricating and using such mobile terminals are provided. Generally, planar inverted-F antennas, such as dual band CDMA, GPS, and Bluetooth antennas, cannot be placed in close proximity of each other without having interference. Accordingly, notch filters are provided in a dual band CDMA antenna to mitigate the interference and to facilitate isolation between the antennas.

Abstract: A direct conversion receiver comprises a low noise amplifier, a bandpass filter, a mixer circuit and a baseband processing assembly. The low noise amplifier is capable of receiving communication signals from an antenna and, in turn, the bandpass filter is capable of filtering the received signals to a bandpass including a reception frequency band. The mixer circuit is electrically connected to an output of the bandpass filter, and can demodulate the received signals into differential signals in two channels. The baseband processing assembly is electrically connected to the mixer circuit opposite said bandpass filter. In this regard, the baseband processing assembly can process the demodulated differential signals in at least one of the channels. And to compensate DC offset from the demodulated differential signals, for each channel the baseband processing assembly includes a pair of dynamic offset compensation elements and a static offset compensation element.

Abstract: The present invention relates to systems and methods that facilitate compensating for intersymbol interference (e.g. due to non-nyquist filtering) in Code Division Multiple Access (CDMA) systems (e.g., IS 95 and IS2000 systems). The subject invention employs equalization filters (e.g., T-spaced equalizers) at fingers of a RAKE receiver. By effecting such equalization filtering at a downstream point in a receiving system, e.g., at the fingers of the RAKE receiver, the filters can be run so as to operate at lower rates as compared to conventional systems where filtering is effected upstream where time is not necessarily known thus requiring equalization filters to operate at significantly faster rates (e.g., 2× or 4× expected chip rate). Accordingly, as compared to conventional systems where the matching filters often are of substantial complexity (e.g., >80 taps) the present invention provides for less complex equalization filters thereby reducing overall system complexity and cost.

Abstract: The present invention comprises a method and apparatus, which provides feedback for identification of a selected input on an electronic device. The method and apparatus is provided for identifying selected inputs of a device by a user of the device before the selected input is accepted as input for further processing in the device.

Abstract: A novel design of, and method of operation for, a coherent delay lock loop (DLL) for communication systems that employ a pilot channel or pilot symbols is disclosed. Pilot information is used to produce an estimate of signal phase and thereby remove the need for the magnitude operation within the DLL arms. The disclosed design and method afford better time-tracking performance by avoiding the squaring loss (due to the magnitude operation) encountered in noncoherent DLL designs. Alternative embodiments disclose designs and methods that are robust to signal amplitude variation. A first alternative normalizes a DLL error signal by a computed estimate of the squared magnitude of the pilot signal. A second alternative normalizes the error signal using only the early and late signals and therefore is applicable for noncoherent DLL designs as well as coherent DLL designs.

Abstract: An RF signal reception method includes mixing a received signal and a local oscillator signal to form a down converted signal. The down converted signal formed from the received signal is a modulated non-zero low frequency carrier referred to as a low frequency carrier desired signal. The low frequency carrier desired signal is extracted from undesired signals and interferers by using low or band-pass filters and the resulting signal is AC coupled to low frequency amplifiers for amplification. A digital representation of the low frequency carrier desired signal is then formed by digitally sampling at an analog-to-digital converter. The digitized desired signal may be further processed by digital signal processing devices for obtaining voice and/or data messages.

Abstract: An electronic device having multiple antennas and capable of operating in a wireless communication system, where interference between the multiple antennas is minimized using a detuning circuit activated by one or more antennas and resulting in detuning of at least one of the antennas. Activation of the detuning circuit can be accomplished by positioning an antenna to complete the detuning circuit and thereby activate the detuning circuit.

Abstract: A protective enclosure for protecting and enclosing an electronic device. The protective enclosure provides communication capabilities with the electronic device while the electronic device is enclosed and protected by the protective enclosure. The enclosure also provides an alert upon an unsolicited activation of the electronic device and allows the user to communication with electronic device without removing the electronic device from the enclosure.