This is a mode where the psp is effectivly turned off, but when you turn it back on it resumes from the same spot.

The phone receives signals from the system over the control channel intermittently, rather than constantly, as analog and IS-136 phones do. As a result, the phone battery is used less and therefore can be used for a longer time before recharging. It also increases the stand-by time.

An energy saving state many newer computers use. Use of this mode is preferable to a full shutdown and restart, as it places less strain on hardware components Also, recovery from sleep mode is much quicker than a full boot process.

Battery saving feature of the Bark Limiter. A motion detector in the unit automatically turns it off when neither motion or barking is detected.

This refers to the placement of a computing device into an inoperable mode where less power is consumed by shutting down unnecessary devices, but leaving all data in RAM. Typically, you return from sleep mode by using the keyboard or mouse and devices are switched back on.

When an instrument turns off by itself when not in use; this conserves battery life.

Designed to conserve battery life, this mode automatically turns off a terminal after it has been unused for a specified period of time. The unit is reactivated when the keypad is touched.

An energy-saving mode of operation in which all unnecessary components are shut down. Many battery-operated devices, such as notebook computers, support a sleep mode. When a notebook computer goes into sleep mode, it shuts down the display screen and disk drive. Once awakened, the computer returns to its former operating status.

Sleep mode, stand by, and hibernation all refer to a low power mode for electronic devices such as computers. Waking up resumes normal operations.