The first time a display device is turned on, is turned on after it has been factory reset, or is factory reset, the display device displays a message indicating that in a default and current power mode of the display device, a hardware component of the display device different than display hardware is powered off when the display device enters a low-power state. A user is permitted to have the hardware component remain powered on when the display device enters the low-power state.

The present invention provides a power control circuit and control method. The power control circuit includes: a control module configured to control, according to an activation command, a memory bank of a plurality of memory banks to perform an operation; a power management module configured to wake up a local power supply for the memory bank according to a clock enable signal; and a power control module communicatively coupled with the power management module and configured to: send the clock enable signal to the power management module of the memory bank corresponding to the activation command in a power-saving mode; and send the clock enable signal to power management modules of the plurality of memory banks in a non-power-saving mode, where the power-saving mode indicates that a system clock is in a low-frequency state.

A point-of-sale (POS) device includes a processor, a battery, a transaction object reader, a printer with a printer controller, and optionally a temperature sensor. The processor determines a present power discharge capability rate of the battery, optionally based on a temperature measured by the temperature sensor. The processor also calculates a first estimated power draw rate based on a first setting value for at least one of the components of the POS device, such as the printer. If the first estimated power draw rate is dangerously close to the present power discharge capability rate of the battery, a second estimated power draw rate is calculated based on a second setting value for the one or more components. If the second estimated power draw rate is no longer dangerously close to the present power discharge capability rate of the battery, the components are set to the second settings value.

A point-of-sale (POS) device includes a processor, a battery, a transaction object reader, a printer with a printer controller, and optionally a temperature sensor. The processor determines a present power discharge capability rate of the battery, optionally based on a temperature measured by the temperature sensor. The processor also calculates a first estimated power draw rate based on a first setting value for at least one of the components of the POS device, such as the printer. If the first estimated power draw rate is dangerously close to the present power discharge capability rate of the battery, a second estimated power draw rate is calculated based on a second setting value for the one or more components. If the second estimated power draw rate is no longer dangerously close to the present power discharge capability rate of the battery, the components are set to the second settings value.

Methods, systems, and devices for memory device operation are described. A memory device may operate in different modes in response to various conditions and user constraints. Such modes may include a power-saving or low power mode. While in the low power mode, the memory device may refrain from operations, such as self-refresh operations, on one or more of the memory array(s) included in the memory device. The memory device may deactivate external interface components and components that may generate operating voltages for the memory array(s), while the memory device may continue to power circuits that store operating information for the memory device. The memory device may employ similar techniques in other operating modes to accommodate or react to different conditions or user constraints.

A power supply system includes circuitry that controls transition of an operation mode of the information processing apparatus from a first mode to a second mode in response to reception of user operation for transitioning to the second mode, the second mode being a mode in which electric power supplied to the information processing apparatus is less than that of the first mode, determines whether to release the second mode based on a detection result of a sensor that detects presence of a human, to output a first determination result, determines whether a first condition relating to the user operation is satisfied, to output a second determination result, and determines, based on the second determination result indicating that the first condition is satisfied, whether to allow releasing of the second mode based on the first determination result indicating that no human is detected.

A power supply system includes circuitry that controls transition of an operation mode of the information processing apparatus from a first mode to a second mode in response to reception of user operation for transitioning to the second mode, the second mode being a mode in which electric power supplied to the information processing apparatus is less than that of the first mode, determines whether to release the second mode based on a detection result of a sensor that detects presence of a human, to output a first determination result, determines whether a first condition relating to the user operation is satisfied, to output a second determination result, and determines, based on the second determination result indicating that the first condition is satisfied, whether to allow releasing of the second mode based on the first determination result indicating that no human is detected.

According to one embodiment, a memory system includes a nonvolatile memory and a controller which controls the nonvolatile memory. The controller notifies to an outside an extensive signal which indicates a predetermined state of the nonvolatile memory or the controller.

A system and method for efficiently transferring data between devices. In various embodiments, a host computing device receives parallel data, encodes the parallel data as a count of pulses as serial data, and conveys the serial data to a peripheral device. The peripheral device decodes the received serial data to determine the parallel data, which is sent to processing logic. The devices send the encoded pluses on a bidirectional line, so the pulses are capable of being sent in both directions. The devices send the encoded pulses on the bidirectional line using a non-zero base voltage level. The devices are capable of using a voltage headroom when conveying encoded pulses between one another. Therefore, a full voltage swing between a ground reference voltage level and a power supply voltage level is not used when conveying the encoded pulses, which reduces power consumption.

A processing apparatus is provided which includes memory configured to store hardware parameter settings for each of a plurality of applications. The processing apparatus also includes a processor in communication with the memory configured to store, in the memory, the hardware parameter settings, identify one of the plurality of applications as a currently executing application and control an operation of hardware by tuning a plurality of hardware parameters according to the stored hardware parameter settings for the identified application.