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Sleep (system call)

About: Sleep (system call) is a research topic. Over the lifetime, 2633 publications have been published within this topic receiving 27806 citations. The topic is also known as: Sleep() & sleep().


Papers
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Patent
28 Oct 1991
TL;DR: In this paper, a watchdog function is used to monitor the microprocessor's activity and save power by shutting down many of the input-sensing circuits, and the watchdog function does not accept sleep commands unless it stands in the proper timing relationship to a signal on the strobe pin.
Abstract: A system which includes a microprocessor (or microcontroller) and an auxiliary chip which monitors the system power supply voltage and performs related functions for the microprocessor, and also provides a watchdog function to monitor the microprocessor's activity. The auxiliary chip itself can put to sleep by the microprocessor to minimize power consumption. The sleep mode of the auxiliary chip saves power by shutting down many of the input-sensing circuits, and the watchdog function. The sleep command is not accepted unless it stands in the proper timing relationship to a signal on the strobe pin. This permits the power savings of the sleep mode to be realized, without any risk of the system being placed in the sleep mode due to an out-of-control system condition.

109 citations

Patent
07 Oct 2009
TL;DR: In this paper, the authors present systems and methods for optimizing the sleep and post-sleep performance of individuals regardless of their environment and time available for sleep. But they do not consider the effects of a sleep episode on dexterity, cognitive functions and subjective feeling of fatigue after sleeping.
Abstract: Systems and methods for optimizing the sleep and post-sleep performance of individuals regardless of their environment and time available for sleep are provided. The systems and methods take into account factors that determine the effects of a sleep episode on dexterity, cognitive functions and the subjective feeling of fatigue after sleeping: duration and sleep architecture of the sleep episode, point on the circadian cycle at which the episode occurred, the amount of sleep debt accumulated prior to the episode and the subject's susceptibility to sleep deprivation. The systems and methods include monitoring of sleep architecture over a longer period of time, measurement of accumulated sleep debt and assessment and/or tailoring of the sleep architecture for each subsequent sleep episode, determining a desired sleep state in which the subject should be in, and generating sensory stimuli for guiding the subject to the desired sleep state.

109 citations

Patent
18 Jul 2006
TL;DR: In this paper, a method and system for reducing power consumption of a wireless transmit/receive unit (WTRU), (i.e., mobile station), is disclosed, where a first WTRU measures a predetermined parameter and determines whether the measured predetermined parameter exceeds a threshold.
Abstract: A method and system for reducing power consumption of a wireless transmit/receive unit (WTRU), (i.e., mobile station), are disclosed. A first WTRU measures a predetermined parameter and determines whether the measured predetermined parameter exceeds a threshold. If so, the first WTRU sends a sleep frame to a second WTRU. The sleep frame indicates sleep duration. The second WTRU receives the sleep frame and enters a sleep state for the sleep duration. The predetermined parameter may be an inactivity time of wireless medium. The second WTRU may or may not be allowed to send transmission to the first WTRU during the sleep duration. The sleep frame may be a control frame, a management frame, a data frame or an action frame. One of a multiple receiver aggregate (MRA) multi-poll frame, a power saving aggregation descriptor frame, or a power save multi-poll frame may be used as the sleep frame.

109 citations

Patent
08 Jul 1987
TL;DR: In this article, an electronic filter is applied to analog signals representing eye movement and head movement, obtained from detectors attached to a simple headgear, to provide satisfactory information for automatically reporting an individual's sleep state.
Abstract: Electronic filters are applied to analog signals representative of eye movement and head movement, obtained from detectors attached to a simple headgear, to provide satisfactory information for automatically reporting an individual's sleep state. The filters determine whether there has been substantial eye and head movement in a given period. Each filter then generates binary output signals representing movement (or the absence of it). Noise filters and a comparison filter are then applied to the binary output signals to predict sleep state; REM sleep; NREM sleep; or wakefulness.

108 citations

Patent
18 Aug 2003
TL;DR: A sleep state processor classifies the patient's sleep state based on the sleep-related signals as discussed by the authors, which may be used in connection with the delivery of sleep state appropriate therapy, diagnostic testing, or patient monitoring.
Abstract: Systems and methods for sleep state classification involve detecting conditions related to sleep, including at least one condition associated with rapid eye movement (REM) sleep. Additionally, a condition modulated by the sleep-wake status of the patient may be detected. A medical system that is partially or fully implantable incorporates sensors and circuitry for detecting and processing the sleep-related signals. A sleep state processor classifies the patient's sleep state based on the sleep-related signals. Sleep state classification may be used in connection with the delivery of sleep state appropriate therapy, diagnostic testing, or patient monitoring.

108 citations


Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202422
20233,172
20225,977
2021175
2020191
2019236