Abstract: A cradle for a wireless device such as a cellular telephone. The cradle provides a second antenna for antenna diversity operation of the wireless device. Optionally, the cradle contains any of hardware circuitry, processing, and software to provide antenna diversity operation in conjunction with the wireless device.

Abstract: A method for sending acknowledged transport data between a mobile station (202) and a base station system (208) in a GPRS system (200) in which a protocol control unit (214) counts the number of data blocks in an acknowledgement message sent by the mobile station in response to a data packet transmission. A heuristic is then defined, based on the number of data blocks counted, and the number of corresponding data blocks corresponding to a subsequent data packet transmission is compared with the heuristic to determine that a virtual acknowledgement channel is being requested when the number of corresponding data blocks in the subsequent packet data transmission is less than the heuristic.

Abstract: A code division multiple access (CDMA) cellular telephone with reduced transmissions from the CDMA cellular telephone to a remote base station. A variable rate vocoder is operable to receive an input signal and encode the input signal at any of a plurality of frame rates responsive to an amount of audio content present in the input signal. A controller monitors an encoding rate of operation of the variable rate vocoder and detects when the variable rate vocoder operates at a predetermined rate. The controller then causes a transmitter coupled to the variable rate vocoder to reduces a duty cycle of operation.

Abstract: An RF test connector plug (30) for securing an opening (32) to access an RF test connector (33) for testing an electrical connection of an antenna (26) of a radio communication device (20) that allows testing of an antenna connection and prevents removal by a user. First and second leg members (40, 46) of the RF test connector plug (30) extend upward from a lower portion (38) shaped to conform to a curvature of an outer surface of the radio communication device. First and second tabs (52, 54) are positioned at the opening (32) to secure and to position the first leg member (40) and the second leg member (46), respectively, along the antenna (26) to prevent rotation of the RF test connector plug (30) within the opening (32).

Abstract: A Smart Card has an electronic circuit connected to a source of potential capable of destroying at least a portion of the electronic circuit. The potential is normally short circuited, but the path of the short circuit traverses a frangible portion of the card. When the portion is broken, so potential from the source is applied to destroy the portion of the electronic circuit.

Abstract: An apparatus enabling multiple client devices to access a SIM card, coupled to a server device, along a local link, that includes a SIM card interface and a router unit. The SIM card interface couples the SIM card to the server device, formats the commands from the client devices for transmission to the SIM card, and formats responses to the commands for transmission from the SIM card to the client devices. The router unit routes the commands from the server device to the SIM card interface, and routes the responses to the commands for transmission along the local link from the SIM card to the client devices. A broadcast message is transmitted by the router unit along the local link to the client devices in response to detecting a physical presence signal transmitted by the SIM card interface in response to the SIM card being coupled to the SIM card interface.

Abstract: Soft output decoding of signals represented by a trellis of block length N divided into windows includes a step of decoding a forward recursion to a location that is I sections from the beginning of the window. An optimum state is detected at the end of the forward recursion. A backward recursion is performed from the determined state at the end of the window back to the beginning of the window to define a set of known backward recursion state metrics. Soft outputs are calculated during the backward recursion using the stored forward recursion state metrics, the backward recursion state metrics, and branch metrics at each state.

Abstract: A variable gain element for adjusting a magnitude of an input signal. The variable gain element includes a first differential transistor pair having a first transistor coupled to a second transistor. A second differential transistor pair couples the second transistor to a supply voltage and to an output terminal of the first transistor. A load resistor couples the output terminal to the supply voltage. A control voltage applied to an input of the second differential pair causes a varying amount of current cancellation through the load resistor.

Abstract: A flowchart (400) includes the step (402) of collecting a predetermined number of TOA measurements arriving at the assisted satellite positioning mobile station from a base station, the step of (406) simultaneously collecting a corresponding number of GPS position measurements of a position of the GPS receiver, and the step (410) of computing the base station location and/or the step (414) of computing a perceived time bias offset required for a message to travel between the base station and the mobile station using the predetermined number of TOA measurements and the predetermined number of GPS position measurements.

Abstract: A cellular telephone holster includes a holster section formed to accept a cellular telephone. A clip portion is rotatably attached to the holster section and formed to have a circular opening with at least one detent along an inner perimeter of the opening. A spring system is coupled to the holster section and includes a substantially incompressible piston and a compressible material separate from and coupled to the substantially incompressible piston. The circular opening is sized to fit around the spring system. The holster section is formed to have at least one protrusion, and the substantially incompressible piston and the compressible material are insertable against the protrusion, whereby the at least one protrusion contributes to holding the substantially incompressible piston and the compressible material in place relative to the holster section.

Abstract: A vehicle lamp assembly includes a housing and an LED lamp carried in the housing. A signal mirror, includes a mirror; and an LED lamp. The LED lamp includes a heat extraction member.

Abstract: An amplifier system to increase the efficiency of amplification systems that employ linear modulation schemes. The amplifier system has a signal amplifier for receiving a constant amplitude input signal and producing an amplified version of the input signal. A variable impedance network presents various impedances to an output of the signal amplifier responsive to a load control signal. An envelope mapping circuit coupled to the variable impedance network produces the load control signal responsive to a desired amplitude modulation (AM) envelope. The various impedances causes the desired AM envelope to be impressed upon the amplified version of the input signal.

Abstract: A method of making a geographic location determination via a cellular telephone in signal communication with a base station. The mobile station first attempts to detect a position location signal. Upon determining that the position location signal is insufficient to use in a position location calculation, the mobile station deactivates at least a portion of a receiver. The mobile station receives a cellular communication signal and measures a signal quality of the cellular communication signal. Responsive to the signal quality improving by a predetermined amount, the mobile station reactivates the receiver portion and re-attempts to detect the position location signal.

Abstract: A radiotelephone (200) has a display (208) that efficiently presents information such as lists and text fields. For each list, the display (208) presents a title message (300) with unique identification markings (332,334), an end-of-list indicator (340), and a dynamic scroll indicator (308) to indicate scrolling directions. A context-sensitive symbol (306) is displayed whenever a context sensitive menu is available for a highlighted item. A search function is incorporated to allow expert users to quickly find information. A notepad feature allows the most recent string of user input data to be stored and recalled so that the data is not accidentally appended to subsequently entered data. Specialized data entry modes such as an editor screen (900), an editor-with-list screen sequence, a set value list screen sequence, a toggle value screen sequence, and a form screen sequence provide efficient retrieval, display, and entry of information.

Abstract: A portable unit (101) may both place and receive calls in both the cordless (115) and cellular (103) telephone system. A portable unit (101), in combination with a cordless base station (115), can automatically route an incoming call to the telephone system in which the portable unit (101) is located without inconveniencing the user. Additionally, the portable unit (101), in combination with the cordless base station (115), can automatically route a call in process with the portable unit (101) between the cordless (115) and the cellular (103) telephone systems when the portable unit (101) relocates therebetween.

Abstract: A watch radiotelephone (10) comprises a watch face (12) and a keypad (14). The watch face (12) indicates a time of day in an analog format. The analog format includes twelve indicia (32-43) positioned around a perimeter (30) of the watch face (12). The twelve indicia (32-43) represent and correspond to twelve hours in a day in the analog format. The keypad (14) includes twelve keys (46-57). Individual keys (46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57) of the twelve keys (46-57) are positioned to correspond with individual (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43) of the twelve indicia (32-43). A user of the watch radiotelephone (10) is permitted to actuate a predetermined number of the twelve keys (46-58) of the keypad (14) in a predetermined sequence to enter a telephone number in accordance with a user's familiarity of the twelve indicia (32-43) located around the perimeter (30) of the watch face (12). A timekeeping circuit (118) provides the time of day to the watch face (12).