Abstract: A Universal Mobile Telephone System (UMTS) receiver performs slot synchronization using a received primary synchronization channel (PSCH). Subsequent to completion of slot synchronization, the UMTS receiver performs frame synchronization using a received secondary synchronization channel (SSCH) in such a way that the UMTS receiver uses the received primary synchronization channel (PSCH) to detect a change in channel conditions.

Abstract: A wireless telephony communications system includes at least one macro cell for communicating both voice and data with a mobile communications device across a first wireless link and at least one micro cell for communicating data with the mobile communications device across a second wireless communication link. Each micro cell communicates signaling information through the macro cell via a wireless link to a control element that manages the micro cells. Using a wireless link to communicate signaling between each micro cell and the control element in the UMTS system eliminates the need for a wired back haul link, thereby reducing access costs.

Abstract: A bypass server is placed in an outgoing link between a mobile device server and a relay used to distribute data from the mobile device server to remote mobile devices to which the data is addressed. Where a direct connection is established between a suitably configured network node (such as a personal computer) and a given mobile device, the bypass server may form a local connection with the network node and divert along the local connection those packets that are addressed to the given mobile device. As such, a lower cost/higher bandwidth local communication path between the given mobile device and the mobile device server may be established, when compared to the conventional remote communication path. The local communication path may be especially useful for bulk data transfers.

Abstract: In one embodiment, a scheme is provided for securing a personalized indicium assigned to a mobile communications device. Upon detecting at a network node that an address associated with the mobile communications device has changed, a challenge-and-response procedure is negotiated between the mobile communications device and the network node for authenticating the personalized indicium using a shared authentication key.

Abstract: In one embodiment, a scheme is provided for managing secure registration of a mobile communications device. Upon being provided with an upgraded registration process that requires encryption, the mobile communications device has the option of continuing to register with a network node using a downgraded registration process within a specified time window which involves unencrypted registration requests and responses. Thereafter, the mobile communications device is operable to select between the upgraded and downgraded registration processes.

Abstract: In the invention, a rate distortion optimization (RDO) based rate control scheme is comprised of following two steps: first, does bit allocation for every frame in a GOP, and based on the allocated bits, a predicted quantization parameter is used to do the first rate distortion optimization mode selection for every macroblock in the current frame; second, the information of the current macroblock collected from the first rate distortion mode selection is used to calculate a final quantization parameter for rate control, and if the final quantization parameter is different from the predicted one, a second rate distortion mode selection will be executed again. A rate distortion optimization based rate control implementation includes following modules: a video coding encoder module(for example, H.264/JVT processing module), rate distortion optimization based macroblock mode selection and adaptive quantization module, virtual buffer, and global complexity estimation module.

Abstract: An inspection system includes a source for emitting a light beam, a sensor for capturing images of a target area, and an optical system for splitting the light beam into a plurality of paths for illuminating the target area. The optical system arranged such that a 2D image and a 3D image of the target area have the same optical path length from the target area to the sensor.

Abstract: Apparatus and methods for managing data used by mobile devices. Data can be retrieved from a second computing device (e.g. a server) where it is stored on a storage medium (e.g. a disk). A subset of-the data of a data record stored in the storage medium, or one or more pointers to the data of a data record stored on the storage medium is stored in a memory of the mobile device so that it is not necessary to store a given data record in its entirety in the memory of the mobile device.

Abstract: The disclosed embodiments relate to a method and apparatus for performing a pilot synchronization operation in a wireless communication system. The system may contain a plurality of sliding correlators that each receives a portion of a received correlation sequence and provides a partial correlation output. An absolute value block may take the absolute value of each partial correlation output. Circuitry may combine the absolute values of each of the partial correlation outputs to form a correlation output.

Abstract: The disclosed embodiments may relate to a method and apparatus for performing a correlation with respect to a received signal. A first correlator may correlate for a real part of a first characteristic of the received signal to produce a first real correlated signal. A second correlator may correlate for an imaginary part of the first characteristic of the received signal to produce a first imaginary correlated signal. A third correlator may correlate for a real part of a second characteristic of the received signal to produce a second real correlated signal. A fourth correlator may correlate for an imaginary part of the second characteristic of the received signal to produce a second imaginary correlated signal.

Abstract: A method and apparatus for detecting the presence of a wireless local area network (WLAN) (104) detects at least one signature sequence in a radio frequency (RF) signal associated with a WLAN (104). The present invention indicates the presence of a WLAN (104) in response to the detection of the at least one signature sequence in the RF signal.

Abstract: A method and device for optimizing an operating point of a power amplifier (40) in a WCDMA mobile terminal (10) is provided. The method includes the steps of receiving a first signal; determining a TFCI value from the first signal; determining a status of a compressed mode of the mobile terminal (10); determining a required power output level of the mobile terminal (10); reading an operating point value from a memory in response to the three determined values; and supplying the operating point value to the power amplifier (40). The operating point value is indicative of a bias current. The device includes a processor (41) for determining a TFCI value, a compressed mode status, and a required power output level from a control signal; a state machine (42) for retrieving from a memory an operating point value of a power amplifier (40) in response to the three values; and the power amplifier (40) for amplifying a transmission signal.

Abstract: A method and apparatus for detecting the presence of a wireless local area network (WLAN) (104) detects at least one signature sequence in a radio frequency (RF) signal associated with a WLAN (104). The present invention indicates the presence of a WLAN (104) in response to the detection of the at least one signature sequence in the RF signal.

Abstract: A method and apparatus for detecting the presence of a wireless local area network (WLAN) (104) determines a position of a mobile device (110) using a position location system (114), receives a position of a WLAN (104) from a location database(112), and determines whether the mobile device (110) is within a service area (108) of the WLAN (104) in response to the position of the mobile device (110) and the position of the WLAN (104).

Abstract: A method and apparatus for detecting the presence of a wireless local area network (WLAN) (104) detects at least one energy fluctuation in a radio frequency (RF) signal propagating in a WLAN frequency band and indicates the presence of a WLAN (104) in response to the detection of the at least one energy fluctuation.

Abstract: A Low-complexity and Low-memory Entropy Coder is proposed for image compression. It includes zerotree coding, followed by the use of Golomb-Rice codes to code the result in a VLC/VLI manner. The result is a complexity similar to that of JPEG coding. The proposed algorithm does not require use of any Huffman table, significant/insignificant list or arithmetic coding and therefore its memory requirement is minimized with respect to any known image entropy coder. Experimental results are given of the use of the proposed coder. The proposed coder is suitable for parallel processing implementation, ROI (Region Of Interest) coding and as a universal entropy coder for DCT and DWT.

Abstract: A system for remotely controlling mobile communication devices includes a redirection system, a remote control system and a mobile data communication device. The redirection system detects a triggering event at a host system and in response to the triggering event continuously redirects data items from the host system to a wireless network. The mobile data communication device receives data items from the wireless network and executes a plurality of device operations. The remote control system receives control information from a user interface and transmits the control information through the redirection system to the wireless network. The control information is received and executed by the mobile data communication device to remotely control one or more of the device operations. Methods of controlling the operation of mobile data communication devices are also disclosed.

Abstract: A system for controlling configuration settings for mobile data communication devices and services includes a redirection server and a policy generation system. The redirection server detects a triggering event in a host system and in response to the triggering event continuously redirects data items from the host system to a wireless network. Each mobile data communication device receives data items from the wireless network and includes a device configuration stored in a memory location on the mobile data communication device. The device configuration of each mobile data communication device controls one or more functions of the mobile data communication device. The policy generation system receives a policy setting from a user interface and stores the policy setting in a user information record associated with a mobile data communication device.