Abstract: A device for providing radio frequency shielding is disclosed. The device includes a frame and cover removably attached to the frame. The frame is configured to extend generally around the periphery of an electronic component. The frame has an upper wall, sidewalls depending therefrom, and a plurality of stiffening flanges extending from the upper wall towards an interior portion of the frame. The cover has an upper surface and a plurality of members extending therefrom for engagement with the sidewalls of the frame. The cover and the frame form an enclosure for radio frequency shielding the electronic component.

Abstract: A mono-band planar inverted F antenna (PIFA) structure comprises a planar radiating element having a first area, and a ground plane having a second area that is substantially parallel to the radiating element first area. An electrically conductive first line is coupled to the radiating element at a first contact located at an edge on a side of the radiating element. The first line is also coupled to the ground plane. An electrically conductive second line is coupled to the radiating element at second and third contacts located along the same side as the first line, but at different locations on the edge than the first contact. Useable bandwidth of the PIFA is increased by using multiple contact locations to couple the conductive second line to the radiating element. The first and second lines are adapted to couple to a desired impedance, e.g., 50 ohms, at frequencies of operation of the PIFA.

Abstract: A mono-band or multi-band planar inverted F antenna (PIFA) structure comprises a planar radiating element having a first area, and a ground plane having a second area that is substantially parallel to the radiating element first area. The second area further comprises a section having a meandering form elongating the effective overall length of the radiating element.

Abstract: Systems and methods of pointing in hand-held devices are described. In accordance with this scheme, a user may control the position where a pointer is displayed on a display screen simply by changing the orientation of the hand-held device relative to a currently preferred device orientation, which is tracked automatically. In addition, unintentional device orientation changes, such as periodic device orientation changes that might be caused by carrying the hand-held device while walking or driving, are filtered out dynamically. In this way, the pointer may be positioned accurately and reliably at any one of a plurality of pointer screen locations based upon changes in device orientation under a wide variety of different usage conditions.

Abstract: A modular wireless telephone including a base module having connection area on a face of the base module, the connection area configured to electrically couple to and mount an input device and a display device. Various types, sizes and configurations of input devices and display devices can be interchangeably used with the base module to provide a modular wireless telephone flexibly adaptable for various applications.

Abstract: A holder for a mobile communication device comprises a receptacle for optimally reducing the SAR value of a mobile communication device secured within the receptacle. At least one material portion, a patch, causing electromagnetic losses may be placed within the receptacle to optimally reduce exposure to low level radio frequency energy to an individual carrying a mobile telephone secured within the receptacle. The patch formed of electromagnetic field reducing material may be placed in one or more particular areas of the receptacle to attenuate one or more corresponding regions of the mobile telephone in which the SAR value is substantially at a local maximum. This may allow a reduction of the SAR value of a mobile telephone while limiting the performance loss associated with the reduction of the SAR value of the mobile telephone when the mobile telephone is secured within the receptacle.

Abstract: A mobile communication device includes a display that may be extended to provide a larger display surface for displaying information to a user of the mobile communication device. The mobile communication device comprises a housing assembly including a first housing portion and a second housing portion. The second housing portion is interconnected with the first housing portion so that the second housing portion slides between a retracted position and an extended position. A display is positioned within the second housing portion so that at least a substantial portion of the display is held behind the first housing portion when the second housing portion is in the retracted position and at least a substantial portion of the display is viewable by a user of the mobile communication device when the second housing portion is in the extended position.

Abstract: A telecommunications system includes a wireless telephone (14) and a personal computer (18) having a wireless telephone interface (24). The wireless telephone (14) is equipped with a personal computer (PC) function key (22) for activating PC controlled functionality. More particularly, when the PC function key (22) is activated, the wireless telephone (14) signals the PC it is ready to receive PC controlled functions. Thus, a menu of options may be transmitted from the PC (18) to the wireless telephone. The user clicks the desired selection to activate or interact with the corresponding program on the personal computer (18).

Abstract: A method of determining a trellis from a sequence of n symbols in a Viterbi detector. The method includes the steps of receiving a sequence of n symbols, defining partitioned sets according to a decision tree structure, and determining size of each set partitioning according to tap energy of the channel. The method also includes steps of determining a reduced set of connection paths between the current layer and a destination layer in the trellis by determining a value of a most likely oldest partitioned set in a current layer; and calculating branch metrics only for the current layers in the trellis in which the oldest partitioned set matches the determined value.

Abstract: A priority communication system (12) is provided. The priority communication system (12) comprises a plurality of communication devices (16) and a switching system (18) for communicating with the plurality of communication devices (16) over a limited number of communication channels (20). The switching system (18) operates to assign a received communication signal (24) to an open communication channel (20) based on a priority rating of the received communication signal (24). The switching system (18) may also operate to terminate a communication link having a priority rating lower than the priority rating of the received communication signal (24) in order to open a communication channel (20) and establish a communication link for the received communication signal (24).

Abstract: Systems and methods allow for more efficient wireless networking. In one system, plural subscriber units form a direct network and transmit and receive without base station mediation. In another system, base stations are networked so that one base station can take advantage of the second, networked, base station. In one example, high-capacity lines are connected to one base station which is then networked to a second base station. Through the network, the second base station can utilize the high-capacity lines without being directly connected to them. In another example, the subscriber units can migrate between all base stations in the network. In another example, using networked base stations and unassigned time sequences or codes, calls can be dynamically reassigned between base stations to meet shifting demand.

Abstract: A cordless digital telephone system which allows broadcast over broadcast is provided. Time division multiple access (TDMA) cordless phone systems provide a base unit which is able to provide connections for a plurality of mobile units, such as handsets. With time division, the mobile units are synchronized to different time slots. A broadcast mode is provided that causes the mobile units to be placed in a receive only mode and to synchronize to the same time slot where a broadcast message is sent. In this way, a cordless telephone base unit in a broadcast mode receives a radio or streaming audio signal. A call controller unit included in or coupled to the base station then sends the received radio or streaming audio signal to at least one mobile unit in communication with the base station.

Abstract: A system, method, apparatus, means, and computer program code for improving accuracy of radio timing measurements. According to embodiments of the present invention, a terminal may obtain a measurement of each of a plurality of radio transmission sources at a distinct instance in time. In addition, a radio timing measurement for a common radio source is obtained for each of the distinct instants in time. The result will be a pair of radio timing measurements for each distinct instance in time containing smaller adjustment errors than radio timing measurements for all radio sources obtained for one common instant in time. The pairs of radio timing measurements can be used to more accurately support applications in which the geographic position of the terminal is obtained.

Abstract: A short message service (SMS) monitoring tool in a SMS-capable core node selectively monitoring SMS communications in a wireless communications system. SMS tool commands sent as SMS messages to the SMS monitoring tool enable/disable the SMS monitoring tool; start and stop monitoring; select mobile equipment (ME) for communications monitoring; and clear stored communications data. Collected SMS data include communications statistics and performance data.

Abstract: A keypad assembly utilizes touch-detecting apparatus such as force sensors or touchpad assemblies for registering key presses. In exemplary embodiments, the keypad assembly is suitable for use in electronic devices such as a mobile telephones, calculators, hand-held computers, or the like, having single piece molded housings wherein the keypad assembly is at least partially encapsulated within the housing.

Abstract: A telecommunications device according to an embodiment of the present invention includes a handset having a keypad, speaker, and microphone on a face. A memory stores an address book of phone numbers. A controller is adapted to transmit one or more of the phone numbers responsive to a voice command to a connected party. In one embodiment of the telecommunications device, the controller activates the voice command functionality responsive to a function key.

Abstract: A system and method for call screening in a wireless telephone system. When a call is received on an answering machine (17) associated with a base part (11), the user at a portable part (12) may select a call screen button (19). The resulting signal is received at the base part (11), which then enters a broadcast mode. The incoming answering machine message is broadcast to all handsets (12, 14, 16). In a TDMA system, an audio message is broadcast from a base part (11) during a single time slot of a time division. The user at a particular portable part may then select a pick up button to pick up the call.

Abstract: An elastomeric connector assembly for electrically coupling electronic components comprises a first contact member extending from a surface of a first electronic component in a generally vertical plane for providing electrical connection to the first electronic component and a second contact member extending from a surface of a second electronic component in a generally vertical plane for providing electrical connection to the second electronic component. An elastomeric connector is disposed between the first contact member and the second contact member in a generally horizontal plane. The elastomeric connector couples the first contact member and the second contact member for providing an electrical connection between the first and second electronic components.

Abstract: A digital signal detector arrangement comprises at least two selectable baseband filters for receiving a digital signal, a signal estimator receiving the output signal of the selected baseband filter, a modulator unit receiving the estimated signal from the signal estimator, a subtractor for subtracting the modulated signal from the received digital signal, and a determination unit receiving the signal from the subtractor for selecting the baseband filter.