A communication device containing a device, which is in the form of a movement module, for mechanically generating a rotational movement, wherein the movement module is provided with a drive rod and a pushbutton (2) for generating a linear movement of the drive rod and also with at least one gear wheel which acts on the drive rod and, in the event of a linear movement of the drive rod, is set in rotational motion, a converter module which is connected to the movement module, wherein the converter module converts the rotational movement which is generated in the movement module into electrical energy, an energy management module, which is connected to the converter module, for providing electrical energy in line with prespecified boundary conditions based on the electrical energy which is provided by the converter module, and a transmission module for transmitting information.

A wireless communication apparatus includes a first control unit operating with power supplied from a secondary battery and operable in a case where a detected voltage of the secondary battery is greater than or equal to a second threshold voltage, a second control unit operating independent from the first control unit and with power supplied from the secondary battery, and a wireless communication unit controlled by the second control unit operating with power supplied from the secondary battery to communicate with a different wireless communication apparatus, wherein, in a case where a detected voltage of the secondary battery is lower than a first threshold voltage that is lower than the second threshold value, the second control unit ends transmission of a packet and communication connection.

Device power consumption is reduced by operating using both one-way and two-way communication techniques. In an aspect a device operates in a first mode enabling one-way communication to an other device for a first portion of device operation time. The first mode includes transmitting a first set of messages to the other device while turning off a power supply used by a receiver of the device. The device switches between operating in the first mode and the second mode. The second mode enables two-way communication between the device and the other device for a second portion of device operation time less than the first portion of device operation. The second mode includes transmitting a second message to the other device, and in response to the transmitting the second message, turning on the power supply used by the receiver.

Systems and methods are disclosed for managing power for a mobile device. In one embodiment, an example mobile device may include at least one memory, at least one processor, a first rechargeable battery, a second rechargeable battery, and one or more solid state relays. The at least one memory may store computer-executable instructions, and the at least one processor may be configured to access the at least one memory and execute the computer-executable instructions. The first rechargeable battery may be configured to power the at least one processor, and the second rechargeable battery may be configured to power the at least one processor. The one or more solid state relays may be electrically coupled to the first rechargeable battery and the second rechargeable battery and configured to transition between a first state in which the one or more solid state relays form a series connection between the first rechargeable battery and the second rechargeable battery and a second state in which the one or more solid state relays form a parallel connection between the first rechargeable battery and the second rechargeable battery.

A multi-layer sticker is provided herein. The multi-layer sticker may include: a first attachment layer; an electronic circuitry layer comprising an electronic circuit suitable for connecting to a consumer electronics device, wherein the electronic circuitry layer is attached on one side to the first attachment layer; a second attachment layer coupled to first attachment layer; and an interface electrically coupled to the electronic circuit and configured to establish an electronic connection with the consumer electronics device.

Embodiments of methods and systems for adaptable power-budget for mobile devices are presented. In an embodiment, a method may include determining a classification of processes to be executed by a processing device. Such a method may also include detecting a process to be executed by the processing device. Additionally, the method may include selectively providing power to the processing device from one or more of a primary battery and a secondary battery in response to the classification of the detected process.

Disclosed is a method for managing the electric quantity of a battery. The method comprises: acquiring a current electric quantity value and a current voltage value; when the electric quantity value saved last time is not a power-off electric quantity, judging whether the current electric quantity value is the power-off electric quantity; when the current electric quantity value is the power-off electric quantity, comparing the current voltage value with a preset first power-off voltage; if the current voltage value is less than or equal to the first power-off voltage, judging whether the current voltage value is continuously greater than a second power-off voltage within the preset number of times; and if the current voltage value is less than or equal to the second power-off voltage within the preset number of times, controlling a mobile terminal system to power off. Also disclosed are a mobile terminal and a computer storage medium.

Recent research efforts in ambient RF energy harvesting are being focused on designing ultra-low power battery free products and maximizing the efficiency of RF harvesting circuits. But the vital information that researchers lack in is how much RF energy is present at a given geographical location and whether their product will be getting enough power to operate at that specific area of usage. The objective is to find the amount of ambient RF energy available in a given location to power battery free products. This was achieved by designing and building a novel, handheld, low cost, system to capture the ambient RF signal (such as cellular signals, TV broadcasting waves, and WiFi signals), convert to DC power level that can be harvested at any given location, and visually GeoMap it using the GPS coordinates. The constructed hardware portion of the system consists of the Arduino microcontroller, the RF Power Detector chip, wideband antenna, and Bluetooth Module. The Arduino is programmed to capture the RF Power data from the RF Power Detector chip and send it to the Mobile Application. The developed Android App is able to communicate with the Arduino via Bluetooth and receive the captured RF Power data from it. The data is uploaded to the webserver along with GPS coordinates. The created website stores the uploaded data from the app to the online database. This data is then GeoMapped, which visually represents the geographical areas having the various RF Power levels with different graded colors shown as a heat map. In conclusion, a system to capture, convert, and GeoMap Ambient RF energy has been successfully designed and calibrated for statistical uses. This system can be extended to GeoMap any transduceable physical phenomena using appropriate transducers.

A case for an electronic device is provided. The case includes a battery and electrical circuitry. The electrical circuitry is configured to receive electrical power from a power source connected to the case, supply the electrical power to the electronic device, and monitor an amount of current of the electrical power used by the electronic device. The electrical circuitry is also configured to charge the battery using a remaining amount of current of the electrical power where the sum of the amount of current used by the electronic device and the remaining amount of current do not exceed a current limit for the power source.

A power control program (mobile terminal connection program) 300 is configured to include a mobile terminal connection unit 302 which connects a plurality of mobile terminals 20 and enables charging of power supplied from a battery, a usage state monitoring unit 304 which monitors usage states of the connected mobile terminals 20, a cranking detection unit 306 which detects cranking based on the voltage supplied from the battery, and a control unit 308 which controls power supply of the mobile terminal connection unit 302 based on monitoring information of the usage state monitoring unit 304 when the cranking is detected.