93results about How to "Convenient power management" patented technology

A power management system for a microcontroller. The power management system includes a power management state machine for controlling a power mode of a central processing unit (CPU) and each subsystem within the microcontroller. Each microcontroller subsystem is connected to the system through a configurable peripheral interface (FPI). Each FPI includes a software configuration register (SFR) that can be configured by an operating system or application program. The SFR for the various FPIs can be preconfigured to allow the response to each of the power modes of the power management state machine to be independently controlled for each subsystem.

The invention relates to an autonomously working monitoring system (10), a method for monitoring and maintenance of power grid distributed power generation devices (14) and a related computer program product. The system comprises at least one power performance monitoring unit (12) for monitoring, analyzing and storing at least power performance data (70) of at least one power generation device (14);

• at least one power generation device (14) comprising at least one power generation module (16) for generation of electric power and at least one inverter module (18) for feeding in electric power of said power generation module (16) to a power grid (20);
• and an external network (22) connecting one or more power generation devices (14) with said power performance monitoring unit (12).

The power generation device (14) further comprises

• at least one data acquisition module (24) for measuring of power output of each power generation module (16);
• at least one inverter measuring module (26) for measuring of power output of said inverter (18) to the power grid (20);
• a data interface module (28) in power line communication with said data acquisition module (24), and in communication with said inverter measuring module (26) and said external network (22) for sending power performance data (70) of said power generation device (14) to said power performance monitoring unit (12) including power generation module ID (66) and inverter ID (68), and/or for autonomously sending a maintenance notice for requesting a maintenance action based on at least a specific power performance pattern.

A personal computer system includes a visual display, an imaging device adapted to provide eye-tracking data by imaging the face of a viewer of the visual display, and an input device for accepting eye-tracking control data and other input data. The imaging device is switchable between at least an active mode, a ready mode and an idle mode, and the switching time from the idle mode to the active mode is longer than the switching time from the ready mode to the active mode. The eye-tracking data provided in the ready mode may include eye position but not eye orientation. The system may include a dedicated input device for forcing the imaging device into active mode by directly triggering an interrupt; alternatively, the dedicated input device forces it permanently into idle mode.

A multi-chip module instrument controller having various interface and operational capabilities. The controller incorporate a microprocessor and both volatile and non-volatile memories. The controller includes variable analog-to-digital conversion bit depths, with higher bit depths for some applications. Additionally, the controller includes a separately controllable field programmable gate array that acts as a parallel processor with internal or separate external clock. The FPGA preferably includes more than thirty thousand gates (30,000) and adds a freely re-configurable and separately programmable multi-purpose digital system that can run independent of the microprocessor.

The present invention relates to systems and methods that manage a state machine's wake state to facilitate power management. The systems and methods comprise a state manager that can be employed to receive signals transmitted to a state machine that has transitioned to a lower power state. Thus, when a signal is transmitted to the state machine, the state manager can initially receive the signal rather the state machine. The state manager can interpret the signal and determine whether a low power coprocessor can respond to the signal. If the low power coprocessor can respond, then the coprocessor responds while the state machines remains in the lower power state. The system and methods can be concurrently employed by a plurality of state machines residing on similar and/or disparate networks, buses, backplanes, etc. The foregoing facilitates state machine power consumption reduction while maintaining timely responses.

A method for transmitting data in a direct link setup (DLS) wireless network and an apparatus supporting the method, and a new frame format for the data transmission method are disclosed. A data transmission method of a tunneled direct link setup (TDLS) wireless network, including: transmitting a TDLS relay request message including relay destination station (STA) information; receiving one or more TDLS relay response messages with respect to the TDLS relay request message from one or more STAs; and selecting a relay STA from among the one or more STAs, and transmitting data desired to be transmitted to the relay destination STA, to the relay STA. A service coverage of a basic service set (BSS) can be extended, communication can be performed at low power consumption, and power of stations can be easily managed.

A method and apparatus for using a multi-user detector for reducing multiple access interference (MAI) in a direct sequence CDMA wireless system such as W-CDMA. A superconducting rapid single flux quantum (RSFQ) RF digital receiver operating in combination with an RSFQ successive interference canceller (SIC) is located in the base stations of the wireless system. In the present invention, the RSFQ SIC is a vector machine capable of processing the cross-correlation matrices using an iterative method to decorrelate the user binary code sequences from the input signal in which the interference components are removed. According, the reduction in interference results in a significant increase in system capacity while improving cellular coverage area.

A method and system for digitally controlled multi-frequency clocking are provided. The method includes receiving a system reference oscillator clock frequency at a microprocessor including multiple cores. The system reference oscillator clock frequency provides a reference frequency to a local oscillator. The local oscillator supplies a core clock frequency to at least one of the cores. The method further includes adjusting the local oscillator to output the core clock frequency at a frequency greater than the system reference oscillator clock frequency as a function of digital frequency characteristic data associated with the core or cores. The method supports extendibility to larger systems and may support enhanced power management through frequency adjustments at the core level.

A process and system of lighting with green energy source and intelligent power management, which saves energy consuming and limits pollution. The system is using solar power, green battery, and LED which are clean, long life; save, and energy saving. A microcontroller coordinates devices and sensors to optimize the operation of the system to generate illumination. The process includes the steps of sensing the environment, selecting power source, determining the energy output and driving the light device in order to most efficiently using energy and generate sufficient light for different purposes.

Methods and devices for monitoring intra-ocular pressure of a patient using a miniature implantable sensor device are provided herein. Methods include obtaining multiple pressure measurements each day during an increment of an extended monitoring period according to a sampling program and wirelessly transmitting stored measurement data and wirelessly charging the device. Measurements and data process is performed with low power requirements such that sampling can be performed hourly for at least one week using energy stored on the miniature device and measurement data can be transmitted and the device charged rapidly when an external portable data acquisition/charging device is held in proximity to the device. In one aspect, methods include switching between differing use modes and powering the sampling device with a high impedance battery by switching between a supercapacitor and the battery with a microcontroller to perform impedance conversion.

A method for refreshing a display. The method includes refreshing even and odd columns of a display panel at a first frame refresh rate where for each frame, even and odd columns are refreshed. Upon entering a display idle period, a low power display refresh is performed. The low power display refresh includes: refreshing the even columns of the display during even frames while circuitry driving odd columns are not used, and refreshing the odd columns of the display during odd frames while circuitry driving the even columns are not used. Refreshing the even columns and refreshing the odd columns are performed at a second frame refresh rate that is slower than the first frame refresh rate.

A personal computer system comprises a visual display, an imaging device adapted to provide eye-tracking data by imaging at least one eye of a viewer of the visual display, and identifying means for recognizing the viewer with reference to one of a plurality of predefined personal profiles. The personal computer system further comprises an eye-tracking processor for processing the eye-tracking data. According to the invention, the eye-tracking processor is selectively operable in one of a plurality of personalized active sub-modes associated with said personal profiles. The sub-modes may differ with regard to eye-tracking related or power-management related settings. Further, the identifying means may sense an identified viewer's actual viewing condition (e.g., use of viewing aids or wearing of garments), wherein the imaging device is further operable in a sub profile mode associated with the determined actual viewing condition.

The disclosed embodiments provide a system that facilitates power management in a multi-core processor. During operation, the system detects a change related to a number of active processor cores in the multi-core processor. (Within this system, a given processor core can reside in an active state, wherein the given processor core can draw an active power, or alternatively in a constrained state, wherein the given processor core can draw a constrained power, which is less than the active power.) In response to detecting the change, the system computes a new current limit I_CCMAX for the multi-core processor based on the number of active and constrained processor cores. Finally, the system communicates I_CCMAX to a power-management mechanism within the multi-core processor. This enables the power-management mechanism to use I_CCMAX to account for power saved by the constrained processor cores when the multi-core system is subsequently determining whether to change its operating frequency.

An electronic device is provided that is adapted to generate a supply voltage at an input node from a radio frequency (RF) signal. The electronic device includes a limiter coupled to the input node for limiting a supply voltage level at the input node that is generated by the received RF signal. The limiter is configured to draw a limiter current from the input node so as to limit the supply voltage level to a maximum and a magnitude of the limiter current is used for controlling a power consumption of the electronic device.

Power usage of a portable computing device is modified to more efficiently use a power supply included in the portable computing device. Power usage by different components of the portable computing device is modified based on use of the portable computing device to allow dynamic modification of power consumption. The portable computing device includes data describing various power management states and the portable computing device transitions between different power management states as it is used, modifying the power consumption of various components in different power management states. Various communication device operating states are also defined to modify power usage by communication devices included in the portable computing device based on device usage.

The invention discloses a power supply management method of a vehicle security system. The method comprises the following steps of: starting up the system, detecting whether an external power supply exists or not by the system and selecting a corresponding power supply mode; monitoring the state of external equipment by the system and judging the working state of the system; when the system detects the condition that the voltage of the external power supply is lower than a first voltage threshold value, cutting off the power supplied by the external power supply by the system and supplying power by adopting an internal battery; when the voltage of the internal battery is lower than a second voltage threshold value, automatically powering off by a GSM (Global System for Mobile Communications)/GPRS (General Packet Radio Service) module; continuing running by a master controller and closing a GPS (Global Position System); and when the voltage of the batteries is lower than a battery protection voltage, powering off by the system. The invention improves the power supply management of the system through improving the power supply circuit of a vehicle-mounted GPS/GPRS anti-theft apparatus and ensures that the working time of the system can be prolonged under the conditions of reducing the system power consumption under an SLEEP mode, avoiding vehicle feed and only using the internal batteries so as to guarantee the normal running of an anti-theft tracking system.

A power manager (106) and method for managing the power supplied to an electronic device is provided. Furthermore, a system wherein the power supplied to an electronic device is managed is provided. The power manager (106) is operative to monitor a hardware monitor (104) during a monitoring time period. The hardware monitor (104) is coupled to an electronic device (102). The electronic device (102) has a workload during operational use. The hardware monitor is operative to indicate the workload of the electronic device (102). The power manager is operative to control power supplied to the electronic device (102) in dependency on the monitoring.