173results about How to "Reduce standby power" patented technology

A driving circuit drives a switching element such that an ON-period of the switching element is shorter when a power receiving device is detected not to be placed than when the power receiving device is placed.

A method for reducing power consumption during background operations in a memory array with a plurality of sections comprising the steps of (i) controlling the background operations in one or more sections of the memory array in response to one or more control signals and (ii) presenting the one or more control signals and one or more decoded address signals to one or more periphery array circuits of the one or more sections.

In a logic circuit where clock gating is performed, the standby power is reduced or malfunction is suppressed. The logic circuit includes a transistor which is in an off state where a potential difference exists between a source terminal and a drain terminal over a period during which a clock signal is not supplied. A channel formation region of the transistor is formed using an oxide semiconductor in which the hydrogen concentration is reduced. Specifically, the hydrogen concentration of the oxide semiconductor is 5x10¹⁹ (atoms/cm³) or lower. Thus, leakage current of the transistor can be reduced. As a result, in the logic circuit, reduction in standby power and suppression of malfunction can be achieved.

Power is taken out from radio waves through an antenna and a power receiving unit. A signal receiver, a comparator, and an ID signal holder are operated with the taken-out power to compare an ID contained in a received signal with an ID read out from the ID signal holder. When both the ID's are matched with each other, a switch for a main power source is turned on. In trying to remotely operate household electrical appliances by utilizing the Internet that has become increasingly popular, standby power is consumed if the electrical appliances are kept in a standby state at all times. Since power is taken out from radio waves, the invention is able to cut the standby power in an environment where the radio waves are transferred via radio communication that is expected to be more and more prevalent in future.

A data processing apparatus has a data saving control portion. At shutdown, within the period after a fall in the source voltage is detected until the source voltage falls down to the lower limit at which the apparatus is guaranteed to operate, the data saving control portion saves to a non-volatile memory all the data needed to restore the state of an electronic circuit portion.

Integrated circuit standby power consumption may be reduced using a reverse-bias transistor control arrangement that reduces transistor leakage current. Integrated circuit transistors may be turned off using a reverse bias voltage rather than a ground voltage. A charge pump circuit on the integrated circuit may be used to generate the reverse bias voltage. The reverse bias voltage may also be provided from an external source. The integrated circuit may be a programmable logic device in which logic is configured by providing programming data to configuration cells. The configuration cells may be used to apply either a positive power supply voltage to a given transistor to turn that transistor on or to provide the reverse bias voltage to that transistor to turn that transistor off.

A charger for recharging the batteries of a portable electronic device even when no external power source is available. A battery or cell is installed within the charger, and when no access is available to a fixed power source into which the charger can be plugged, the internal battery or cell can be used to recharge the electronic device. The internal battery can be a primary battery or a secondary battery. In the latter case, the internal battery can be maintained in a charged state by means of circuitry which, when the charger is plugged into the external power source, charges the internal battery as well as the battery of the electronic device. The external power source can be either an AC power wall socket, in which case the charger includes AC/DC voltage conversion circuits, or a car lighter socket, or the DC output of a conventional wall charger.

Methods, devices, arrays and systems for reducing standby power for a floating body memory array. One method includes counting bits of data before data enters the array, wherein the counting includes counting at least one of: a total number of bits at state 1 and a total number of all bits; a total number of bits at state 0 and the total number of all bits; or the total number of bits at state 1 and the total number of bits at state 0. This method further includes detecting whether the total number of bits at state 1 is greater than the total number of bits at state 0; setting an inversion bit when the total number of bits at state 1 is greater than the total number of bits at state 0; and inverting contents of all the bits of data before writing the bits of data to the memory array when the inversion bit has been set.

A packet relay device determines a port to be placed on standby in a link aggregation, determines whether there is an active port among ports belonging to redundant network interfaces, and, if a network interface has no active port, places the network interface on standby. The packet relay device monitors whether a failure has occurred in an active network interface and, if a failure is detected, activates a standby network interface and places the failed network interface on standby.

An isolated power converter, an inverting type shunt regulator, and an operating method thereof are disclosed. The isolated power converter includes a transformer, an inverting type shunt regulator, a controller, and an optocoupler. The inverting type shunt regulator is located on the secondary side of the transformer. The inverting type shunt regulator includes an error amplifier and a MOSFET. The controller is located on the primary side of the transformer. The controller includes an inverting unit cooperated with the MOSFET. The controller receives a feedback voltage. The optocoupler is coupled to the inverting type shunt regulator and the controller to provide an opto-coupling current to the controller.

In one particular embodiment, an integrated circuit includes a package and a substrate electrically and physically coupled to the package. The package includes a first pin, a second pin, and metallization coupling the first pin to the second pin. The substrate is coupled to the package via the first pin and the second pin. The substrate includes a plurality of power domains and a power control unit. The second pin of the package is coupled to a particular power domain of the plurality of power domains. The power control unit includes logic and a switch, where the switch includes a first terminal coupled to a voltage supply terminal, a control terminal coupled to the logic, and a second terminal coupled to the first pin of the package. The logic selectively activates the switch to distribute power to the particular power domain via the metallization of the package.

Disclosed is a power supply device including a wired controller receiving AC power to generate a driving voltage, and outputting a lighting driving signal, a wireless controller wirelessly receiving a lighting control signal and outputting the lighting control signal to the wired controller, and a standby power supply unit receiving a reference standby voltage based on the driving voltage, storing the reference standby voltage, and supplying the reference standby voltage to the wireless controller as standby power. In the lighting control device based on wired/wireless communication, the power is always obtained from the super capacitor to turn on the wireless controller, so that the turn-on state of the power generator of the wired controller is not always required. The power consumption is reduced by reducing the standby power.

The invention provides an air conditioner and a standby control method thereof. An indoor controller of the air conditioner can judge whether the outdoor environment temperature is more than a preset temperature; when the outdoor environment temperature is less than or equal to the preset temperature, a main relay of an indoor electric control plate is controlled to be switched on so as to supply power to an outdoor unit of the air conditioner, so that the normal preheating of a compressor and the normal frost melting at the bottom of a condenser can be ensured; if the outdoor environment temperature is more than the preset temperature, the main relay is controlled to be switched off and the power supply to the outdoor unit is switched off, so that the air conditioner enters a low-power-consumption standby mode; through the segmental standby treatment for the outdoor environment temperature, when the outdoor environment temperature is more than the preset temperature, the power supply to the outdoor unit is stopped and the standby power of the air conditioner is reduced.

A printer (image forming device) (10), which includes AC loads driven by an AC power, is connected to an external device (30) via a single power line for a logic operation and a signal line. More specifically, a printer driver (11) and an engine controller (13) operate on a 5V power supply voltage obtained via a USB cable (20). When a standby state is entered, a relay (17) is turned off, an AC power supply to a drive power supply (19) is disconnected, and a power supply to the AC loads is disconnected. When the standby state is released by a signal received from the PC (30), an ON signal is generated for the relay (17) to supply the AC power. In this way, the standby power is reduced to improve energy saving.