摘要:
A power distribution network includes multiple charge storage components and multiple charging circuits to control the charging and discharging of the charge storage components, which may comprise a battery and a supercapacitor. By appropriate arrangement and selection of the storage components, ripple in the power supply voltage, whose propagation to other components relying on the power distribution network may cause an audible buzz, may be significantly reduced. Additionally, appropriate arrangement and selection of the storage components, electromagnetic interference may also be significantly reduced.
摘要:
A mobile device 10 configured to have at least one function disabled when a speed of the mobile device 10 exceeds a threshold. The mobile device includes an output component 20 configured to provide a notification related to disabling the at least one function. The mobile device also includes a first input 70 component configured to promote controlling whether to disable the at least one function.
摘要:
A mobile wireless communications device (10) may include a housing (13), and circuitry carried by the housing. The circuitry may include a wireless transceiver (11), a wireless broadcast receiver (12), audio circuitry (14) coupled to the wireless transceiver and the wireless broadcast receiver, a wired headset jack (15), and a reference voltage device line (17a), and at least one wired headset device line coupled between the audio circuitry and the wired headset jack. The reference voltage device line may be also coupled to the wireless broadcast receiver so that a corresponding reference voltage headset line (26a) of a wired headset (16) serves as an antenna for the wireless broadcast receiver. The reference voltage line may be switchable to one or more connectors at the headset jack.
摘要:
A mobile device 10 configured to estimate the speed at which it is moving. The mobile device 10 includes a timing component 50 configured to perform a plurality of Doppler shift measurements on a timing signal received by the mobile device 10. The mobile device 10 also includes a processing component 60 configured to correlate the size of the range of the plurality of Doppler shift measurements to the speed at which the mobile device 10 is moving.
摘要:
A communications device (500') may include an In-phase (I) circuit having an In-phase modulator and mixer circuit (503'-506a'), and an I power amplifier (512a') circuit coupled thereto, the I circuit configured to modulate and amplify a digital baseband I signal (601a'-601b') to generate an amplified I signal, and a Quadrature (Q) circuit having a Q modulator and mixer circuit (503'-506b'), and a Q power amplifier circuit (512b') coupled thereto, the Q circuit configured to modulate and amplify a digital baseband Q signal (601c'-601d') to generate an amplified Q signal separate from the amplified I signal. The communications device may include a processor (530') configured, for example, to selectively switch the digital baseband I signal and the digital baseband Q signal between the I and Q signal inputs to provide selective phase shifting for the digital baseband I and Q signals. For example, the controller may selectively phase shift the digital baseband I and Q signals, and control the I and Q power amplifier circuits to vary an amplitude of the amplified I and Q signals.
摘要:
A power management system and method for a wireless communication device generates an average desired transmit power signal based on at least one of a received signal strength indicator signal and a power control instruction signal from a base station. A power supply level adjustment signal is generated based on the data parameters of an outgoing data stream and at least one environmental information signal. A combination of the power supply level adjustment signal and the average desired transmit power or a gain control signal and an altered version of the power supply level adjustment signal is used to generate a variable power supply signal that is provided to an output amplifier block for sufficiently generating outgoing wireless device radio signals while reducing power loss in the output amplifier block.