摘要:
The invention concerns a method (200) of generating an array (100, 300, 400) having a reduced number of input/outputs (114, 314, 414). The method includes the steps of, for each array row input/output, grouping (212) at least one set of rows (124, 324, 424) in which the set of rows is coupled to the array row input/output and, for each combination of the array row input/outputs, selectively coupling (216) non-set rows (326, 426) to the array row input/outputs that comprise the combination. At least a portion of a number of rows (110, 310, 410) for the array is equal to the number of rows in each set of rows multiplied by the number of array row input/outputs plus the number of non-set rows coupled to the array row input/output combinations.
摘要:
A wireless device (100) includes an electrical circuit arrangement (200) for deterring access to an electrical signal having a predictable electrical pattern. The circuit arrangement (200) includes a processor (206) for processing instructions and a controller (210) communicatively coupled to the processor (206) and able to send at least one signal along each of a plurality of signal lines from within the circuit (200). The processor (206) causes the controller (210) to sporadically introduce a signal onto each of the plurality of signal lines, where the signal is unrelated to any communication function of the wireless device and is present solely for the purpose of making the signal line unpredictable.
摘要:
The invention concerns a method (300) and system (100) for obtaining ambient temperatures. The method can include the steps of coupling (312) an accessory (112) having a first temperature monitor (170) to a portable electronic device (110), operating (314) a power source (114) of the portable electronic device and monitoring (318) an ambient temperature with the first temperature monitor and a temperature of the power source. The method can also include the steps of discontinuing (322) operation of the power source if the temperature of the power source reaches a predetermined threshold and reinitiating (328) the operation of the power source if it is determined (324) that the ambient temperature was within a predetermined range of the predetermined threshold and that the ambient temperature is outside the predetermined range.
摘要:
A battery pack (110) having a plurality of cells (103, 105) utilizes a pull up resistor (116) multiplexed between separate voltage supply sources (120, 122) and a single battery contact (106) to monitor individual cell temperatures. A plurality of thermistors (102, 104) are coupled in series between ground potential (108) and the single battery pack contact (106), each thermistor being coupled to one cell of the pack. Individual voltage divider circuits are formed for each thermistor (102, 104) as the pull up resistor (116) is multiplexed between the voltage supply sources (120, 122).
摘要:
A communication device (102) has a loudspeaker (212) that includes a loudspeaker coil. The loudspeaker is used for playing audio signals and for detecting metal in the vicinity of the loudspeaker. To detect metal the communication device includes a pulse generation circuit (216) for generating pulses that are applied to the loudspeaker, and a pulse measurement circuit (222) for measuring response pulses. If the response pulses indicate metal is in proximity to the loudspeaker, an alert is generated to inform the user of the communication device.
摘要:
The invention concerns a method (300) and system (100) for operating a multiple charger. The method can include—in a multiple charger (110) having at least a first switch (134) and a second switch (122) for respectively controlling the flow of current to a first battery (116) and a second battery (118)—charging (312) the first battery by maintaining the first switch in a saturated state and charging (314) the second battery by maintaining the second switch in a saturated state. The first switch and the second switch can be simultaneously maintained (314) in the saturated state at least until the first battery reaches a predetermined charging threshold (412, 414).
摘要:
A charging system (108) supplies a source voltage (Vco, FIG. 5) and a source current (Ico, FIG. 5) to a plurality of battery cells (110). The charging system operates according to a method (200) including the steps of determining (202) a capacity for each of the plurality of battery cells (120 and 130), determining (204) a desired cutoff current (Ico1, FIG. 5) for a select one of the plurality of battery cells (120) having the smallest capacity, determining (206) an optimal source cutoff current according to the capacity of the select one of the plurality of battery cells, adjusting (208) the source current according to the optimal source cutoff current, and upon the source current reaching the optimal source cutoff current, switching out the select one of the plurality of battery cells to allow continued charging of another cell until it is fully charged.
摘要:
A device (100) has a charging system (102) for coupling to a charger (103) operating in a vehicle, and a processor coupled to the charging system. The processor is programmed to detect (202) a charging state while a user of the device is operating the vehicle, and detect (204-208) an act by the user to exit the vehicle.
摘要:
A battery charging method (20) can include the steps of setting (20) a maximum charge voltage for a battery (104) and dynamically adjusting (38) the maximum charge voltage for the battery based on at least one among an amount of time the battery is maintained at the maximum charge voltage and an amount of cycles the battery is charged to the maximum charge voltage. The method can further include the step of measuring (36) a temperature of the battery and further dynamically adjusting (38) the maximum charge voltage for the battery based on the temperature of the battery, and/or timer value and/or counter value. Furthermore, the method can also include the step of updating (130) at least one among a counter and a timer each time after a charge is complete.
摘要:
The invention concerns a light detection power system (105). The system can include a solar cell charging circuit (120) having at least one solar cell (116) in which the solar cell charging circuit can provide power to a power source (114), a lighting circuit (122) that receives power from the power source and a controller (118) coupled to the solar cell charging circuit and the lighting circuit. The controller can enable the lighting circuit when a power level that the controller detects from the solar cell charging circuit fails to reach a first predetermined threshold. The solar cell charging circuit can include a switch (130) that is controlled by the controller. The controller can further enable the switch when the power level that the controller detects from the solar cell charging circuit reaches a second predetermined threshold.