Abstract: Disclosed is a method (200) for charging energy storage devices. The method (200) can include a battery charging method in a power supply client connected by a data bus to a power supply host. The method (200) includes the steps of: detecting (210) a state of the power supply host; determining (220) a limit of current from the host to the client; allocating (230) a portion of the limit to a battery charging current; and charging (240) a battery of the client at the battery charging current such that the current from the host is greater than a recommended limit and less than or equal to the determined amount. Thus a client device can confidently charge at a rate which causes the port current to exceed a recommended limit, such as a USB port limit of 500 mA, when allowed by conditions of the host device.

Abstract: A method and apparatus for operating a dual-modem wireless device is provided herein. During operation, a mobile unit is allowed to operate in both a single-radio and a dual-radio mode. The mobile unit is allowed to dynamically switch between a single-radio and a dual-radio mode depending on environmental parameters.

Abstract: A method is described that is for handing over a multi-mode mobile device from a first network technology to a second network technology. The method includes initiating by the multi-mode mobile device a first packet session in a first wireless network in an area of multi-technology wireless coverage and detecting by a multi-mode mobile device a second wireless network supporting a different access network technology than the first wireless network.

Abstract: The invention relates to a system that enables power to be selectively applied to GPS circuitry in a cellular telephone or other mobile device only when a specific user input is detected. In one embodiment, power to the GPS circuitry may be enabled only when the user strikes the keys “9-1-1.” In other embodiments, other types of GPS enablement or disablement may be employed, such as selectively decoupling the GPS antenna. In another embodiment, the user may depress a privacy bypass button, which alternately enables and disables power to the GPS circuitry. Cellular telephones or other communication devices may therefore activate GPS location service during an emergency call, or when a user wishes to allow their location to be determined, but protect the privacy of that user's location and movement at other times.

Abstract: An emergency text message application (205), operable to control a processor (201) in a portable electronic device (200) is provided. The emergency text message application (205) allows a user to send any of a manually input, partially completed, or preformed completed emergency text message to emergency services personnel. A location detection module (204) can be used to retrieve a location of the portable electronic device (200). The emergency text message application (205) can then insert the location into the emergency text message. As more accurate location determinations are made, the emergency text message application (205) can substitute the more accurate information into the emergency text message and retransmit. An alert disabler can automatically transform the portable electronic device (200) to a vibration mode or silent mode to prevent incoming communication from being audible to a nearby threat.

Abstract: A method is described that is for handing over a multi-mode mobile device from a first network technology to a second network technology. The method includes initiating by the multi-mode mobile device a first packet session in a first wireless network in an area of multi-technology wireless coverage and detecting by a multi-mode mobile device a second wireless network supporting a different access network technology than the first wireless network.

Abstract: An emergency text message application (205), operable to control a processor (201) in a portable electronic device (200) is provided. The emergency text message application (205) allows a user to send any of a manually input, partially completed, or preformed completed emergency text message to emergency services personnel. A location detection module (204) can be used to retrieve a location of the portable electronic device (200). The emergency text message application (205) can then insert the location into the emergency text message. As more accurate location determinations are made, the emergency text message application (205) can substitute the more accurate information into the emergency text message and retransmit. An alert disabler can automatically transform the portable electronic device (200) to a vibration mode or silent mode to prevent incoming communication from being audible to a nearby threat.

Abstract: The invention relates to a system that enables power to be selectively applied to GPS circuitry in a cellular telephone or other mobile device only when a specific user input is detected. In one embodiment, power to the GPS circuitry may be enabled only when the user strikes the keys “9-1-l.” In other embodiments, other types of GPS enablement or disablement may be employed, such as selectively decoupling the GPS antenna. In another embodiment, the user may depress a privacy bypass button, which alternately enables and disables power to the GPS circuitry. Cellular telephones or other communication devices may therefore activate GPS location service during an emergency call, or when a user wishes to allow their location to be determined, but protect the privacy of that user's location and movement at other times.

Abstract: A mobile communication device 100 has a digital subsystem (110) and a radio frequency subsystem (108), and is powered by a battery (102) which is charged via a charge control circuit (106) using an external power supply (104) connected to the mobile communication device in a single path configuration. The mobile communication device permits limited operation of the mobile communication device by a user while the battery voltage is sufficient to power the digital subsystem but not yet sufficient to power the radio frequency subsystem. The delay in operation is minimized, however, because once charging commences, the battery voltage rises sufficiently fast that, typically, by the time the digital subsystem is initialized, enabled, and powered up, the battery voltage will be sufficient to enable the radio frequency subsystem.

Abstract: These various embodiments are suitable for use with a personally portable apparatus (200) that is configured and arranged to render selected content into a perceivable form for an end user of that personally portable apparatus. These teachings generally provide for gathering (101) information regarding this end user (wherein this information does not simply comprise specific instructions to the personally portable apparatus via some corresponding user interface). These teachings then provide for inferring (103) from this information a desired end user rendering modality (that is, as desired by that end user) for the selected content and then automatically selecting (105), as a function (at least in part) of that desired end user rendering modality, a particular rendering method from amongst a plurality of differing candidate rendering methodologies to employ when rendering the selected content perceivable to the end user at the personally portable apparatus.

Abstract: A method for locating a wireless communications device WCD (102). The method includes the step of receiving at the WCD (102) a wireless transmission comprising a first auto-location trigger signal. The WCD (102), responsive to the first auto-location trigger signal, operates in an auto-location mode. The auto-location mode includes the automatic collection and communication of predetermined first data, such as audio, video, and GPS location data. After the automatic collection and communication step of the first data is complete, the WCD (102) enters into a standby mode. The standby mode continues until a state detection device (206) of the WCD (102) detects a change in the state of the WCD (102). These changes in state are exclusive of the wireless transmission comprising the first auto-location trigger signal. The change(s) in state produce a second auto-location trigger signal, which causes the automatic collection and communication of a second data that is the same or similar to the first data.

Abstract: A sigma delta digital-to-analog (D/A) converter system (10) includes a summing device (35) at an input of a D/A converter (30), and a low frequency low amplitude wave signal (31) injected at an input of the summing device that remains unfiltered and is used to suppress spurious tone artifacts. The D/A converter system can further include an amplitude control and a frequency control for selectively adjusting the frequency and the amplitude of the low frequency low amplitude wave signal being injected. Note, the low frequency low amplitude repeating wave signal generator can take the form of a digital signal processor (DSP) (37) having the appropriate software to generate such signals.

Abstract: Supply voltages within a data processing system may be controlled by a voltage control module which can provide digital signals to a power management unit to cause changes in supply voltages without software intervention. For example, in one embodiment, a voltage control signal and a standby signal may be provided to control the supply voltages output by a voltage regulator within the power management unit. In one embodiment having multiple processors, a voltage control signal and a standby signal corresponding to each processor may be provided to the power management unit which has a voltage regulator supplying an independently controlled supply voltage to each processor. Alternatively, a voltage regulator, a voltage control signal, and a standby signal may be shared by multiple processors, where the voltage control module may ensure that the supply voltage is changed only when the change is appropriate for all processors sharing the same voltage regulator.

Abstract: A portable communication device (10) includes a transceiver (12 and 14), an acceleration sensor (20) coupled to the transceiver, and a processor (16) coupled to the acceleration sensor. The processor is programmed to monitor (32) an acceleration profile of the portable communication device and compare (48 and 52) the acceleration profile of the portable communication device with at least one pre-stored acceleration profile (18).

Abstract: A dual access peripheral interface uses a shared data bus (16) for communication with dual master units (30,32) coupled to a common peripheral device (34). Each master control unit provides a shared subset of control bits to a logic configuration block (48), which combines the control bits in a logic operation to present to the slave peripheral unit (34). The logic configuration block (48) is configured by configuration bits accessible by only one of the master units (30). In this way, both of the master units can access the peripheral at the same time with the logic of the logic configuration block determining the ultimate control of the peripheral.

Abstract: A method of updating Global Positioning System almanac data includes steps for obtaining a current satellite almanac for a satellite constellation at a server in a communications infrastructure associated with a wireless device (102), creating a subset of the current satellite almanac in the server that includes satellite almanac data only for fewer than all satellites listed in the current satellite almanac (104), and transmitting the subset of the current satellite almanac from the server to the wireless device (106).

Abstract: The invention relates to a system that enables power to be selectively applied to GPS circuitry in a cellular telephone or other mobile device only when a specific user input is detected. In one embodiment, power to the GPS circuitry may be enabled only when the user strikes the keys “9-1-l.” In other embodiments, other types of GPS enablement or disablement may be employed, such as selectively decoupling the GPS antenna. In another embodiment, the user may depress a privacy bypass button, which alternately enables and disables power to the GPS circuitry. Cellular telephones or other communication devices may therefore activate GPS location service during an emergency call, or when a user wishes to allow their location to be determined, but protect the privacy of that user's location and movement at other times.

Abstract: A subscriber unit (102) monitors a percentage of slots in a control channel (108) for a time period, and determines a utilization of the control channel (108) during the time period based upon the percentage of slots monitored. A percentage of slots in the control channel 108 to monitor for a page during a subsequent time period is selected based upon the utilization of the control channel (108) during the time period. The percentage of slots monitored during the subsequent time period may be adjusted based upon relative usage of page types in the control channel (408), recent call activity (410), and received signal strength (412).

Abstract: A dual access peripheral interface uses a shared data bus (16) for communication with dual master units (30,32) coupled to a common peripheral device (34). Each master control unit provides a shared subset of control bits to a logic configuration block (48), which combines the control bits in a logic operation to present to the slave peripheral unit (34). The logic configuration block (48) is configured by configuration bits accessible by only one of the master units (30). In this way, both of the master units can access the peripheral at the same time with the logic of the logic configuration block determining the ultimate control of the peripheral.

Abstract: A device having battery-save circuitry includes a power-on reset circuit (603), an OR-gate (604) coupled to the power-on reset circuit (603), a current-boost timer circuit (602) coupled to the OR-gate (604), a reference oscillator (403) with a start-up current mode enabled by the current-boost timer circuit (602), and a low current secondary reference oscillator (613). A method of operating the device includes operating the device in a battery-save mode and an active mode. A first clock signal is used as a microprocessor clock signal while operating the device in the battery-save mode, and a second or third clock signal is used as the microprocessor clock signal while operating the device in the active mode.