Showing papers on "Sleep (system call) published in 2005"

Collecting activity and sleep quality information via a medical device

Abstract: A device, such as an implantable medical device (IMD), programming device, or other computing device determines when a patient is attempting to sleep. When the device determines that the patient is attempting to sleep, the device determines values for one or more metrics that indicate the quality of a patient's sleep based on at least one physiological parameter of the patient. When the device determines that the patient is not attempting to sleep, the device periodically determines activity levels of the patient. Activity metric values may be determined based on the determined activity levels. A clinician may use sleep quality information and patient activity information presented by a programming device to, for example, evaluate the effectiveness of therapy delivered to the patient by a medical device.

Collecting sleep quality information via a medical device

Abstract: At least one of a medical device, such as an implantable medical device, and a programming device determines values for one or more metrics that indicate the quality of a patient's sleep. Sleep efficiency, sleep latency, and time spent in deeper sleep states are example sleep quality metrics for which values may be determined. In some embodiments, determined sleep quality metric values are associated with a current therapy parameter set. In some embodiments, a programming device presents sleep quality information to a user based on determined sleep quality metric values. A clinician, for example, may use the sleep quality information presented by the programming device to evaluate the effectiveness of therapy delivered to the patient by the medical device, to adjust the therapy delivered by the medical device, or to prescribe a therapy not delivered by the medical device in order to improve the quality of the patient's sleep.

Device for and method of predicting a user's sleep state

Abstract: A device and a method for waking a user in a desired sleep state. The device may predict an occurrence when the user will be in the desired sleep state, such as light sleep, and wake the user during that predicted occurrence. In one embodiment, a user may set a wake-up time representing the latest possible time that the user would like to be awakened. The occurrence closest to the wake-up time when the user will be in light sleep may be predicted, thereby allowing the user to sleep as long as possible, while awakening in light sleep. To predict when the user will be in the desired sleep state, the user's sleep state may be monitored during the night or sleep experience and the monitored information may be used in predicting when the user will be in the desired sleep state.

Low leakage and data retention circuitry

Abstract: An integrated circuit includes first circuitry and sleep transistor circuitry. The first circuitry receives input signals and processes the input signals. The first circuitry also retains data in a sleep state that has low leakage. The sleep transistor circuitry is coupled to the first circuitry and receives a sleep signal that has a negative voltage. The sleep circuitry reduces power consumption of the first circuitry in the sleep state to have low leakage based on the sleep signal while retaining the data in the first circuitry.

System and method for manipulating sleep architecture by sub-awakening non-intrusive stimulations

Abstract: The present invention which is a new system and method employing stimulation control to treat sleep disorders, and improve sleep states operates in a dynamic, adaptable manner without causing a premature state of arousal. Stimulation is achieved by controlling a wide variety of environmental factors around the sleeping person. The invention is based on a real-time, self-adaptive feedback system including a sleep and environment monitoring unit or a preset adjustable protocol, an integrating, controlling and deciding unit and a stimulation unit. The system and method take into account individual variability and sensitivity to sensory stimulation and phenomena as adaptation and sensitization. The system and method are aimed at improving the overall sleep architecture, and correcting specific disorders. Alternatively the same invention may be used to promote alertness, specific moods and conditions in the awake subject. The invention may be used by professional in sleep laboratories or by individuals in a home environment. It may be adjusted to operate on groups of people and on non-human subjects.

Advanced sleep timer

Abstract: A sleep timer for changing a power state of a device includes a detector, a memory, a sleep interval setting unit, a timer, and a power unit The detector detects interactions between a user and an active device The memory is linked to the detector and stores the historical user interaction data Based on the historical user interaction data, the sleep interval setting unit adjusts the sleep timer's sleep interval The timer determines a power changing point in time based on the sleep interval At the power state changing point in time, the power unit initiates a power state change

Apparatus and method for the treatment of sleep apnea, arrhythmia, and partial epilepsy

Abstract: An apparatus to detect the onset of sleep apnea, and to provide an automated way to awaken the sleeping patient at the onset of sleep apnea. The apparatus may also contain a recording device or computer that captures blood oxygen levels and pulse rates throughout the period of sleep, and may contain computer programs, algorithms, subroutines or logic to determine the level of blood oxygen and pulse rate that indicates the onset of a sleep apnea event. The method of arousing the patient from sleep at the onset of a sleep apnea event will decrease or eliminate the occurrence of sleep apnea, arrhythmia, and partial epilepsy over time.

Automatic user device presence registration system

Abstract: A user device (18) automatically sends a presence message to a presence server (12) when the user device (18) is powered on. Thereafter, the user device (18) may send a sleep message to the presence server (12) upon power down or prolonged period of inactivity, or the device (18) may be required to send periodic messages to the presence server (12) to maintain it as being listed as an active device. The presence server (12) is then used to manage communication with the user device (18) based on the presence information.

Easy wake wrist watch

Abstract: A device that monitors a user's sleep cycles and operates to sound an alarm to awaken the user at an optimal point within a sleep cycle. Once an alarm time is set and the alarm is activated, the device begins to monitor a wearer's sleep cycles by identifying the points in time at which the wearer moves his or her body limbs. As the alarm time is approached, the device can trigger the alarm earlier if the wearer is at an optimal point in the sleep cycle or, even retard the triggering of the alarm if the optimal point in the sleep cycle is expected to occur shortly.

Positioning signal receiving apparatus

Abstract: A GPS receiver is alternately switched between sleep conditions under which between sleep conditions under which a temperature-compensated crystal oscillator is shut off for a specific sleep time while a real-time clock section is kept operational and normal operating conditions under which both the temperature-compensated crystal oscillator and the real-time clock section are kept operational. The GPS receiver determines the ratio of the number of pulses of a reference clock signal to the number of pulses of a low-frequency clock signal counted during a specific period of time preceding the sleep time. The GPS receiver estimates a count value which should have been reached by a reference clock counter at the end of the sleep time if the temperature-compensated crystal oscillator continuously generated the reference clock signal based on the number of pulses of the low-frequency clock signal counted during the sleep time.

Reduced power time synchronization in wireless communication

Abstract: Methods, devices, and systems for wireless communication in which one or more devices are scheduled to awake from a low power sleep state at a scheduled time for data transmission. An illustrative embodiment addresses difficulties that may arise as a result of clock errors that can occur when a device enters a sleep mode for a period of time with a scheduled wake-up time. The device that enters sleep mode may be a remote device in a system including a master device that devises a schedule for the remote device to enter and exit sleep and active communication modes. In one embodiment, the active window for a remote device is extended for a period of time related to the period between a reference time and the remote device transmission time. In another embodiment, a master device is adapted to schedule active time periods for remote devices by including an adjustment for time uncertainty caused by clock errors, the adjustment being related to the period between a reference time and the remote device transmission time. The methods may be adaptive to individual remote devices.

System and method for updating a sleep id of a mobile station in a bwa communication system

Abstract: A system and method for updating a sleep identifier (SLPID) of a mobile station (MS) in a broadband wireless access (BWA) communication system having a sleep mode in which there is no transmission data and an awake mode in which there is transmission data. Upon recognizing a need to update an SLPID allocated to an MS in the sleep mode in the initial phase of the sleep mode, a base station (BS) reallocates a new SLPID to be allocated to the MS and transmits SLPID update information to the MS. Upon receiving the SLPID update information for its current SLPID during the sleep mode, the MS updates its current SLPID with the reallocated SLPID according to the received update information.

Method and apparatus for controlling sleep intervals of a mobile unit

Abstract: The present invention provides a method of wireless communication with a base station. The method may include providing a resource request message comprising information indicative of entry into a sleep mode and receiving an acknowledgment from the base station in response to providing the resource request message.

Approach for distributing multiple interrupts among multiple processors

Abstract: A method and apparatus for distributing multiple interrupts among multiple processors is disclosed. According to one embodiment, an interrupt daemon monitors the interrupt load among the processors that results from an initial mapping of the interrupts to the processors. The interrupt daemon determines whether there is a sufficient imbalance of the interrupts among the processors. If so, the interrupt daemon triggers a reassignment routine that generates a new mapping of the interrupts among the processors, and if not, the interrupt daemon goes to sleep for a specified time period. If the new mapping produces a sufficient improvement in the distribution of interrupts among the processors, based on the same criteria used to detect the imbalance, the new mapping is used by the central hub for subsequent distribution of interrupts to the processors. However, if the new mapping does not provide a sufficient improvement, the original mapping continues to be used.

How well do train driver's sleep in relay vans?

Abstract: Relay working operations typically require two crews of train drivers to work a rotating 8-h schedule for two or more days. While one crew is driving, the other has the opportunity to sleep onboard the train. The current study investigated the impact of relay work on drivers sleep quantity and quality. Fourteen drivers wore wrist activity monitors and completed sleep/wake diaries for 3 d prior to and during short (<48 h) relay trips. Drivers obtained an average of 7.8 h sleep per night while at home, and an average of 4 h sleep per opportunity during the relay trip. Sleep obtained in the relay van was associated with longer sleep onset latencies, lower efficiency and poorer subjective quality than sleep at home. During the relay trip, drivers obtained significantly more sleep during opportunities that occurred in the evening, than those that occurred early morning or during the day. These findings suggest that while drivers are able to obtain sleep during short relay operations, it is of poorer quality than sleep obtained at home. Further, the timing of the sleep opportunities during the relay trip impacts on the quantity and quality of sleep obtained.

Apparatus and method for the treatment of sleep related disorders

Abstract: An apparatus to detect the onset of sleep apnea, and to provide an automated way to awaken the sleeping patient at the onset of sleep apnea. The apparatus may also contain a recording device or computer that captures blood oxygen levels and pulse rates throughout the period of sleep, and may contain computer programs, algorithms, subroutines or logic to determine the level of blood oxygen and pulse rate that indicates the onset of a sleep apnea event. The method of arousing the patient from sleep at the onset of a sleep apnea event will decrease or eliminate the occurrence of sleep apnea, arrhythmia, and partial epilepsy over time.

Processor state restoration and method for resume

Abstract: In some embodiments, the invention involves efficiently boot and resume a machine from a low power state. In at least one embodiment, the present invention saves the processor state(s) in a buffer that allows fast access upon a resume from sleep mode. When a sleep (S3 mode) is initiated in a platform, processor state context is saved in a system reserved buffer that does not allow access to the operating system. The firmware (EFI) has access to the buffer and upon a resume, the processor context(s) are restored from a fast buffer. Other embodiments are described and claimed.

Apparatus and method for determining sleep clock timing

Abstract: Apparatus and methods for estimating the frequency of a sleep or slow clock by selectively utilizing an estimated sleep clock frequency and an estimated change in the sleep clock frequency. The disclosed apparatus includes a sleep clock frequency estimator to output a fast clock derived sleep clock frequency estimate and a sleep clock change frequency estimator to output an estimate of a change in frequency of the sleep clock. The apparatus further includes a combiner that weights at least one of the fast clock derived sleep clock frequency estimate to obtain a weighted sleep clock frequency estimate and the estimate of the change in frequency of the sleep clock to obtain a weighted estimate of the change in frequency of the sleep clock. The combiner also determines a new estimate of the sleep clock frequency using at least one of the weighted sleep clock frequency estimate and the weighted estimate of the change in frequency of the sleep clock. Complementary methods are also disclosed.

Sleep disorder screening program

Abstract: A method of screening for the risk of a sleep disorder such as obstructive sleep apnea proceeds by first providing a sleep health education to a member of an organization, offering and following up by providing a portable screening device for use by the member at home, which monitors a respiratory parameter such as airflow and/or oxygen saturation. The data from the monitoring is then analysed to determine the presence of the sleep disorder and the results are then reported.

Sleeping state improvement system and sleeping state improvement method

Abstract: A sleeping state improvement system to improve a sleeping state of a user includes a memory device and a control device that comprises a specification unit and a control unit. The memory device can be carried by the user. The specification unit specifies individual attribute information of the user based on individual information. The individual information is information stored in the memory device. The control unit controls an environment during sleep of the user based on the individual attribute information.

Electronic control system

Abstract: PROBLEM TO BE SOLVED: To provide an electronic control system for vehicles capable of suppressing a dark current amount within a specified value even when an ECU includes a plurality of CPUs. SOLUTION: An output signal control circuit 22 of a wake-up/sleep determination circuit 15 in a power supply IC 3 performs a wake-up sequence control when a wake-up permission is given by an OR circuit 21 during the sleep of the CPU so as to provide power supply voltage to a power manager CPU 1 and G/W-CPU2 as well as to make a reset signal an H level. On the other hand, when a sleep permission is given by an AND circuit 23 during the wake-up of the CPUs, the output signal control circuit 22 performs a sleep sequence control so as to interrupt the power supply to the power manager CPU 1 and the G/W-CPU 2 after making the reset signal an L level. COPYRIGHT: (C)2007,JPO&INPIT

Biosensor, pulse wave sensor, sleep information processing method, sleep information processing device, program and recording medium

Abstract: PROBLEM TO BE SOLVED: To provide a biosensor, a sleep information processing device, a program and a recording medium capable of more precisely analyzing a sleep state and performing a more accurate advice. SOLUTION: Whether a drink termination time T is inputted or not is judged at a step 100. The step is advanced to a step 110 if affirmatively judged here. At the step 110, whether the present time t reaches the time which is the sum of the drink termination time T and elapsed hours until high quality sleep is attained or not, namely whether X hours has elapsed after drinking or not is judged. The step is advanced to a step 120 if affirmatively judged here. At the step 120, the time suitable for sleep is judged to have reached since X hours have elapsed after drinking, and this fact is reported to a subject by vibration or the like by driving for instance a vibration part 39 or the like. By this, the subject receiving the report about this can sleep at an appropriate time and can obtain high quality sleep. COPYRIGHT: (C)2007,JPO&INPIT

Multiple functionality associated with a computer ON/OFF pushbutton switch

Abstract: The invention in one implementation encompasses a computer (10) having an operating system and a power ON/OFF pushbutton switch (12). A microcontroller (34) is coupled to receive ON/OFF information generated by the pushbutton switch. Responsive to receiving the ON/OFF information, the microcontroller generates a command causing the operating system to cause the computer to toggle between sleep and awake states.

Power supply managing and electricity saving method for TD-SCDMA mobile phone

Abstract: The power management module distributes in top level system control module and each sub-system module. The power management of each system is decided and controlled by state machine. The state machine has three states: sleep, idle and working. The top level power management module is controlled by a low frequency clock that is valid when the top level system is under sleep state. At that time all sub-system are under sleep state. The low frequency clock uses a 32k crystal oscillator. When the system is under sleep state, the system high frequency clock is closed, so that base band controller, base band processor and all peripherals are closed.

Power supply status automatic test method for computer apparatus

Abstract: The automatic power source state measuring method for computer aims at solving the problem that the power source state of computer is limited by the hardware configuration. The automatic power source state measuring method includes for the operator to select the power source state testing items and numbers vian an operation menu, for the computer to execute the selected test functions in the power source test state, and for the computer to re-execute the selected test items after the preset time the timer in the keyboard controller counts. The present invention may be used in testing the stand-by, sleep, shutting, reboot and other functions of computer.

Environmental temperature controlling apparatus

Abstract: PROBLEM TO BE SOLVED: To efficiently gain a sound sleep, namely, a comfortable awakening and a deep sleep by controlling an environmental temperature to match the biological sleep rhythm. SOLUTION: An environmental temperature controlling apparatus 1 includes a depth of sleep measuring means 41 and a temperature controlling means 51. The depth of sleep measuring means 41 has the function of detecting a starting point of sleep T 0 of a human body 9 and the function of measuring the depth of sleep of the human body 9 after the start of sleep and executes the detection of the starting point of sleep T 0 and the measurement of the depth of sleep after the start of sleep. The starting point of sleep T 0 and the depth of sleep are given to the temperature controlling means 51. The temperature controlling means 51 controls the environmental temperature on the basis of a cycle of the depth of sleep by decreasing the environmental temperature monotonously for at least a prescribed period from the starting point of sleep T 0 . The prescribed period is an interval between the starting point of sleep T 0 and the time when the depth of sleep reaches the second extreme value out of the extreme values showing the deep sleep. COPYRIGHT: (C)2006,JPO&NCIPI

Multiplex communication system

Abstract: PROBLEM TO BE SOLVED: To provide a multiplex communication system which can avoid complete depleting of a battery can be prevented, by surely switching the node into a sleep mode, even when any node does not sleep due to a fault or the like. SOLUTION: In the multiplex communication system wherein a plurality of nodes mutually communicate via a communication line, each of nodes in a wake-up state sets itself not to wake up by the start signal from the other node (S30) when the drop of a battery voltage is confirmed (S20: YES), stops transmitting the start signal to other nodes and further switches itself into the sleep node (S50). Thus, the entire system can be transferred into the sleep mode and the battery can be prevented from being dead without adding a hardware circuit such as a power supply cut-off relay. COPYRIGHT: (C)2005,JPO&NCIPI

Skip counter for system timer

Abstract: A skip counter timing device employing a typical hardware system timer, a skip counter with a skip count register, a signal gate and a hardware system tick counter as a single sleep mode enhancing skip counter. In an exemplary embodiment, said skip counter is operatively interconnected to a legacy operating system, with said operating system being configured for said interconnection. Use of said skip counter provides the benefits of: 1) allowing CPU shutdown during device sleep modes while 2) eliminating the need for the CPU to perform fractional mathematical calculations in recalculating accurate timer settings upon factional time-slice timer interrupt firings at CPU restarts and thus 3) avoiding overloading CPU resources at said restarts and 4) eliminating incremental and cumulative inaccuracies associated with recalculating timer settings in dynamic timer-managed systems.