摘要:
Wireless communications devices, such as cellular telephones (100), include an integrated camera (202) and process image data captured by that camera (202) to determine desired device illumination levels. A controller (410) within the wireless communications device (100) causes an image to be captured by the integrated camera (202). The captured image data is processed to determine approximate ambient light levels. A level of device illumination, such as provided by a display backlight (416) and a keypad backlight (418) is controlled based upon the approximate ambient light levels.
摘要:
A system for verification of a battery (100) includes the battery (100) and a device (400,500). The battery (100) includes a memory device (135) for storing an identification number and a verification number. The verification number is generated by applying a key to the identification number. The device (400,500) is coupled to the battery (100) and includes a device memory (515) for storing the key and a microprocessor (435,510) for verifying the identification number of the battery (100) by applying the key to the verification number.
摘要:
The invention concerns a method (200) and a system (100) for charging a battery (112). The method includes the steps of determining (214) a charge termination point for the battery, in which the charge termination point produces a charge on the battery that is less than an initial maximum charging capacity of the battery, and charging (224) the battery using the charge termination point for at least a portion of the charge cycles of the battery. The method reduces at least in part the variation of battery capacity over the cycle life of the battery.
摘要:
An apparatus (10) having a portable power source (11) can make use of a plurality of differing charge depleted threshold values (and, in a preferred embodiment, corresponding visual charge-remaining indicators) to determine what level of charge remains in the portable power source (11). This in turn permits the recharging advice as suggested by the visual indicator to better track and reinforce the ordinary recharging behaviors of a given user. So configured, the total lifetime of the portable power source may be extended while also ensuring that the portable power source will be fully charged upon completion of each charging cycle.
摘要:
Wireless communications devices, such as cellular telephones (100), include an integrated camera (202) and process image data captured by that camera (202) to determine desired device illumination levels. A controller (410) within the wireless communications device (100) causes an image to be captured by the integrated camera (202). The captured image data is processed to determine approximate ambient light levels. A level of device illumination, such as provided by a display backlight (416) and a keypad backlight (418) is controlled based upon the approximate ambient light levels.
摘要:
The minimum transmit battery voltage (Vtx min) of a radio operating in a TDMA mode of operation or the stand-by battery voltage (Vstd-by) of the radio operating in a GSM mode of operation can be determined as a function of the combination of an in-slot transmit battery voltage (Vin-slot), an out-of-slot transmit battery voltage (Vout-slot), a stand-by compensation factor (&Dgr;sb), and a compensation factor (K). The stand-by compensation factor (&Dgr;sb) is related to a difference between the out-of-slot transmit battery voltage (Vout-slot) and a stand-by battery voltage (Vstd-by). The compensation factor (K) has a first value for the TDMA mode of operation and a second value for the GSM mode of operation. Each value of compensation factor (K) is related to the manner in which the radio utilizes battery power during transmission in the TDMA or GSM modes of operation.
摘要:
A method and system for programming rechargeable battery characteristics is provided. The system having: a memory component for storing user profiles; a power management integrated circuit; and a processor for retrieving the user profiles and directing power from the battery to the power management integrated circuit in accordance with the user profiles. The method consists of: determining the type of battery; retrieving user profiles stored in a memory component; and adjusting the battery characteristics according to the user profiles.
摘要:
This document discusses, among other things, a method for a portable electronic device comprising measuring a temperature of the portable electronic device and switching a power path for the portable electronic device from an external power source to an internal power pack, such as a battery, based on the temperature of the portable electronic device.
摘要:
The invention concerns a system (100) and method (300) for charging a battery. The method includes the steps of supplying (312) a charging current to a battery (110), sensing (314) the charging current to the battery and selectively signaling (316) an electronic device (118) from the battery to indicate at least one parameter of the battery as the battery is receiving the charging current. As an example, the charging current can be from a wireless charger (116). In addition, the parameter can be, for example, a charging state of the battery or a predetermined current threshold of the charging current.
摘要:
A portable electronic device and a method to protect the portable electronic device from a battery bounce are provided. The portable electronic device (100) can comprise a free-fall condition sensor (105) enabled to detect a pre-battery bounce condition in the portable electronic device and a processor (110) coupled to the free-fall condition sensor (105). The processor (110), in response to a detection of the pre-battery bounce condition by the free-fall condition sensor (105), can be programmed to place the portable electronic device (100) in a pre-battery bounce setting. The method can include detecting a pre-battery bounce condition in the portable electronic device (405) and in response to the detection of the pre-battery bounce condition (405), placing the portable electronic device in a pre-battery bounce setting (410).