Showing papers on "Timer published in 2013"

Detecting that an autonomous vehicle is in a stuck condition

Abstract: An autonomous vehicle may determine that a speed of the autonomous vehicle is less than or equal to a threshold speed, and that the autonomous vehicle has not detected a traffic control signal. The autonomous vehicle may identify a cause C for the speed to be less than or equal to the threshold speed. The autonomous vehicle may start a timer T that is based on the cause C. After the timer T expires, the autonomous vehicle may determine whether the cause C remains as a cause for the speed to be less than or equal to the threshold speed. After determining that the cause C remains the cause for the speed to be less than or equal to the threshold speed, the autonomous vehicle may send an assistance signal indicating a stuck condition.

Systems and methods for secure and private delivery of content

Abstract: The present solution provides a new tool for privately and securely delivering content from a send to a recipient. Additionally, the tool provides a system and method for ensuring the content is not seen by onlookers, retransmitted, or copied. The system described herein accomplishes the protection of content by several different means. For example, the system may never store unencrypted copies of content to a local device, such that content may not be viewed by a system other than the system described herein. Additionally, the system may overlay an obfuscating layer to the content when the content is displayed on a client device. Such an obfuscating layer prevents onlookers from unintentionally viewing the content. It may also prevent a recipient from capturing a screen shot or copying the content. Furthermore, the system may also set a number of expiring timers on the content. For example, a first expiration timer may automatically delete send content from a recipient device a set time after the content has been sent. A self-destruct expiring timer may delete the content a short time after a user begins to view the content.

A 120nW 18.5kHz RC oscillator with comparator offset cancellation for ±0.25% temperature stability

Abstract: Integrated low-frequency oscillators can replace crystal oscillators as sleep-mode timers to reduce the size and cost of wireless sensors [1]. Since the timer is one of the few continuously functioning circuits, minimizing its power consumption can greatly reduce sleep-mode power of highly duty-cycled systems. Temperature stability of the oscillator is important in order to minimize timing uncertainly and guard time for the radios, and thus maximizing sleep time. The voltage-averaging feedback method described in [2] achieves high stability in the MHz frequencies, but when scaled to the kHz range, requires very large filters. On the other extreme, gate leakage-based timers have been designed for sub-nW power consumption, but operate in the sub-Hz frequencies [3]. In the past, high accuracy RC oscillators in the kHz range have been designed with feed-forward correction [1] and self-chopped operation [4]. In this work, an offset cancellation architecture achieves long-term frequency stability and temperature stability while operating at lower power.

Method and apparatus for processing NAS signaling request in wireless communication system

Abstract: The present invention relates to a method and an apparatus for processing NAS signaling request in wireless communication system, and more particularly, to a method and an apparatus for processing a NAS signaling request. The method for performing a non-access stratum (NAS) signaling process by means of a terminal in a wireless communication system according to one embodiment of the present invention comprises: a step of receiving a first message that includes information indicating a network failure from a network node of a first network; a step of starting a timer relating to a network selection; and a step of selecting a second network from among network candidates excluding the first network during the operation of the timer relating to a network selection.

Timing advance timer configuration in a wireless device and a base station

Abstract: A base station transmits control message(s) comprising media access control dedicated parameters. The media access control dedicated parameters comprise a time alignment timer value for a primary cell group and a sequence of at least one element. Each element comprises a time alignment timer value and a cell group index. The time alignment timer value is associated with the cell group identified by the one cell group index. Each time alignment timer value is selected from a finite set of predetermined values.

Control method and device based on multiple priorities in wireless communication system

Abstract: A wireless communication system is disclosed. More particularly, a control method and device based on multiple priorities in a wireless communication system is disclosed. The method of controlling a back-off timer in a terminal configured with multiple priorities, which includes transmitting a first non-access stratum (NAS) request message set to a first priority level, starting the back-off timer configured by a network, and transmitting a second NAS request message, which is not set to the first priority level, while the back-off timer runs.

A Sub-nW Multi-stage Temperature Compensated Timer for Ultra-Low-Power Sensor Nodes

Abstract: Accurate measurement of synchronization cycle time is required for ultra-low power wireless sensor nodes with stringent power budgets. A multi-stage gate-leakage-based timer with boosted charging is proposed to address the high jitter of prior-art gate-leakage-based timers. The key approaches are faster load capacitor charging, wider voltage swing, and an improved gain sensing inverter. The proposed timer reduces RMS jitter by 8.1× and synchronization uncertainty by 4.1×, which allows hourly tracking with 200 ms uncertainty while consuming 660 pW. A novel closed-loop temperature compensation scheme with dynamic leakage adjustment is also proposed to achieve temperature sensitivity of 31 ppm/°C.

Method and device for heating control of an electronic cigarette

Abstract: A method and device for heating control of an electronic cigarette are provided, wherein, the method includes steps as below: S 1 . sensing whether there is a smoke signal via a sensor or a switch, if yes, executing step S 2 ; S 2 . activating a timer to record time and turn on a semiconductor switch so as to heat the heating element in a full output power mode; S 3 . heating the heating element in a constant power mode when the recording time of the timer arrives at a first preset time T0. When implementing the present invention, the adoption of the two heating methods for heating element makes an optimized atomization effect and an excellent taste of smoking possible, which is not affected by the changeable voltage of the battery.

Method and device with dynamic dormancy

Abstract: A method (200) and device (300) for saving energy in a wireless communication device configured to maintain a persistent communication session over a wireless network with an application server. The method (200) can include: opening (210) a persistent communication session with an application server via a cellular network; measuring (220) a round trip time (RTT) from sending a message to the application server to receiving an acknowledgement message from the application server; and automatically transitioning (230) the device from a first operating state to a second operating state after an amount of time in the absence of subsequent data traffic exceeding a predetermined threshold, wherein power consumption associated with the second operating state is less than power consumption associated with the first operating state, and the predetermined threshold is a function of the measured round trip time. Advantageously, the method (200) can measure the actual RTT and transition to a low power based on the measured RTT exceeding a predetermined threshold, before the expiration of a network configured inactivity timer and in the absence of subsequent data traffic, which helps to minimize unnecessary power drain in a wireless communication device and minimizes inefficiencies in connection with data exchanges between a network and a wireless communication device.

Method to enable optimization for small data in an evolved packet core (EPC)

Abstract: Embodiments of a system and method for providing small data and device triggering enhancement (SDDTE) are generally described herein. In some embodiments, memory is provided for storing an SDDTE optimization container therein. A processor is coupled to the memory and is arranged to analyze an SDDTE optimization container including parameters provided therein and to perform SDDTE optimization based on the parameters. The parameters provided by the SDDTE optimization container include an SDDTE optimization timer, wherein the processor holds in the memory small data messages received during a time frame set by the SDDTE optimization timer upon receipt of a first small data message.

Charge state evaluation method and system of power lithium ion battery

Abstract: The invention is a charge state evaluation method and system of a power lithium ion battery. According to the method, step one is to establish a circuit model of an equivalent battery. Charging and discharging and standing experiments are performed on the battery, and timing sampling is performed so that a voltage time curve is obtained. Model parameters are identified via a formula so that a non-linear relation between an open-circuit voltage OCV and an SoC is obtained. Step two is to obtain an optical estimation value of the SoC by matrixes of state prediction, prediction error variance, filtering gain, state estimation, estimation error variance, etc., according to Kalman algorithm. According to the system, an analog/digital converter, a program storage device, a programmable storage device, a timer and a displayer are respectively connected with a microprocessor. A current sensor and a voltage sensor are respectively connected in a circuit formed by connecting the battery to be tested and a load, and outputs of the current sensor and the voltage sensor are accessed into the analog/digital converter. The programmable storage device stores battery model parameters obtained by the experiments. The program storage device stores estimation program of the method. Estimation precision of the SoC can reach 1%, and the charge state evaluation method and system is more stable; besides, the system provides estimation values of the SoC in real time.

Systems, methods and media for small cell idle mode mobility

Abstract: Systems and methods for small cell idle mode mobility include receiving, at a first small cell of a preconfigured cluster of small cells, a mobility area update request from a user equipment (UE). The method can also include registering location information of the UE with a small cell gateway, and retrieving a core network periodic timer for the UE from a mobility server. If certain conditions are met, the first small cell forwards the mobility area update request to a core network via the small cell gateway. Otherwise, the method can include the first small cell updating the location information of the UE with the mobility server, generating a locally-generated mobility area update accept message, and sending a locally generated mobility area update accept message to the UE along with a local periodic timer instructing the UE to send another mobility area update request when the local periodic timer expires.

Ambient Timer – Unobtrusively Reminding Users of Upcoming Tasks with Ambient Light

Abstract: Daily office work is often a mix of concentrated desktop work and scheduled meetings and appointments. However, constantly checking the clock and alarming popups interrupt the flow of creative work as they require the user’s focused attention. We present Ambient Timer, an ambient light display designed to unobtrusively remind users of upcoming events. The light display - mounted around the monitor - is designed to slowly catch the user’s attention and raise awareness for an upcoming event while not distracting her from the primary creative task such as writing a paper. Our experiment compared established reminder techniques such as checking the clock or using popups against Ambient Timer in two different designs. One of these designs produced a reminder in which the participants felt well informed on the progress of time and experienced a better "flow" of work than with traditional reminders.

Method and apparatus for configuring a discontinuous reception (drx) operation in a wireless communication system

Abstract: A method for and apparatus for configuring a DRX (Discontinuous Reception) operation in a wireless communication system is provided. A wireless device starts an onDuration timer according to a first DRX configuration and stops the onDuration timer which is running according to the first DRX configuration if a second DRX configuration is received. So that the UE can move out of the OnDuration before the expiry of the running OnDurationTimer by stopping the running onDurationTimer and apply a newly received DRX configuration.

Apparatus and method for managing a random access channel in a mobile communication system

Abstract: An apparatus and method for managing a Random Access CHannel (RACH) in a mobile communication system are provided. A method performed by the UE includes determining, when a signal indicative of a resolution of contention in a RACH procedure is received from a network before a contention resolution timer expires, that the RACH procedure has been successfully completed; receiving, from the network, after the successful completion of the RACH procedure, a UE information transmit request; and transmitting, to the network, in response to receipt of the UE information transmit request, a message including contention information of the completed RACH procedure.

Uplink timing maintenance upon time alignment timer expiry

Abstract: Systems, apparatuses, and methods for uplink timing maintenance in wireless communications are provided. Certain aspects of the disclosure involve applying a timing advance command to adjust uplink transmission timing/resume uplink synchronization; and determining a metric. The metric can be used in determining whether to apply a timing advance command (TAC) to resume uplink resynchronization.

Kid mode user interface with application-specific configurability

Abstract: A user interface is disclosed that is configured to provide a multi-user, multi-application experience for users of a given computing device, where each user account of the device is configurable with applications suitable for that user and each application has a usage timer associated therewith. Thus, each user may have access to applications that are different from another user of that device, and each user can be allocated application usage time independent from other users. The usage timers can be configured to reset once a usage period has lapsed. In some cases, the size of icons displayed for a given user account are automatically sized based on the age range of that user. A reward program may automatically increase the time allotted for given applications/content upon successful usage/consumption of educational applications/content. In a classroom/group setting, multiple computing devices may be simultaneously set into Kid Mode by a master computing device.

Systems and methods for low power consumption in wireless communication systems

Abstract: Methods, systems, and devices for low power consumption in wireless communication systems are disclosed herein. An evolved node B (eNodeB) is configured to provide a connection reconfiguration message to user equipment (UE) connected to the eNodeB, the connection reconfiguration message configuring the UE to indicate a power preference. The eNodeB receives assistance information from the UE. The assistance information includes a low power preference indication and a timer length, wherein the timer length indicates a preferred duration for a low power mode. The eNodeB provides, in response to receiving the assistance information, a connection release message to the UE. The connection release message includes paging discontinuous reception (DRX) information that includes the timer length.

Determining power stealing capability of a climate control system controller

Abstract: Disclosed are exemplary embodiments of systems and methods for determining a power stealing capability of a climate control system controller. In an exemplary embodiment, a controller for use in a climate control system generally includes a capacitor chargeable by current flowing through an off-mode load of the climate control system. A voltage detect circuit detects a voltage across the capacitor. The controller includes a timer for determining a charge time of the capacitor from a first specific voltage to a second specific voltage based on input from the voltage detect circuit. The controller determines a resistance of the off-mode load based on the charge time and, based on the determined resistance, determines a level of current for power stealing through the off-mode load.

How to auto-configure your smart home?: high-resolution power measurements to the rescue

Abstract: Most current home automation systems are confined to a timer-based control of light and heating in order to improve the user's comfort. Additionally, these systems can be used to achieve energy savings, e.g., by turning the appliances off during the user's absence. The configuration of such systems, however, represents a major hindrance to their widespread deployment, as each connected appliance must be individually configured and assigned an operation schedule. The detection of active appliances as well as their current operating mode represents an enabling technology on the way to truly smart buildings. Once appliance identities are known, the devices can be deactivated to save energy or automatically controlled to increase the user's comfort.In this paper, we propose an approach to have buildings informed about the presence and activity of electric appliances. It relies on distributed high-frequency measurements of electrical voltage and current and feature extraction process that distills the collected data into distinct features. We utilize a supervised machine learning algorithm to classify readings into the underlying device type as well as its operation mode, which achieves an accuracy of up to 99.8%.

Network switching method and device

Abstract: The present invention discloses a network handover method and an apparatus, where the method includes: after a terminal is handed over from a home network to a redundant network, receiving, by the terminal, a value of a periodic network detection timer that is sent by a handover module, where the value of the periodic network detection timer is determined by a subscription management device according to a policy and sent to the handover module, or the value of the periodic network detection timer is preset by the handover module; periodically detecting, by the terminal, signal strength of the home network of the terminal according to the value of the periodic network detection timer; and if it is detected that the signal strength of the home network of the terminal is restored, sending a home network restoration report to the handover module, so that the handover module disable an operational profile of the redundant network and enables an operational profile of the home network of the terminal.

Method of providing mtc monitoring related information

Abstract: The present disclosure presents a method of providing information by a subscriber information server for machine type communication (MTC) monitoring. The method may include: receiving information on a monitoring related timer for any MTC device from an MTC related server; adjusting one of the monitoring related timer and a periodic access or location update related timer based on the other timer when there is information on the periodic access or location update related timer for the MTC device; and transmitting information on the adjusted timer to the MTC related server or a monitoring node.

High precision timer in CPU cluster

Abstract: A system includes a first node that generates a first clock signal having a frequency, generates a plurality of data packets, modifies the data packets to include data indicative of time and phase information associated with the first node, and transmits the data packets. A second node receives the plurality of data packets and the first clock signal, determines the time and phase information based on the plurality of data packets, determines the frequency based on the first clock signal, and generates at least one of a second clock signal and a local time based on the time and phase information and the frequency of the first clock signal.

Instruction for enabling a processor wait state

Abstract: In one embodiment, the present invention includes a processor having a core with decode logic to decode an instruction prescribing an identification of a location to be monitored and a timer value, and a timer coupled to the decode logic to perform a count with respect to the timer value. The processor may further include a power management unit coupled to the core to determine a type of a low power state based at least in part on the timer value and cause the processor to enter the low power state responsive to the determination. Other embodiments are described and claimed.

An Arduino-Controlled Photogate.

Abstract: It is hard to imagine teaching physics without doing experimental measurements of position as a function of time. These measurements, needed for the determination of velocity and acceleration, are most easily performed with the help of photogates.1,2 Unfortunately, commercial photogates are rather expensive. Many require the purchase of an additional matching timer or other electronic device. Sometimes special software is also needed. The total bill can easily become prohibitive. For this reason physics teachers have shown considerable interest for cheaper, in-house designed and manufactured photogates.3–6 The photogate systems described in the literature have their limitations. Some rely on a digital stopwatch and therefore cannot measure time with a precision higher than 0.01 seconds. Some use photoresistors that have a slower response than phototransistors. Some are based on the computer microphone port and therefore cannot handle more than two photogates (two audio channels) at the same time. Extracting the time information from an audio file can also be a challenge for some students. We describe here a photogate system that matches the performance of a commercial one but at a fraction of the cost. The key to this success is the use of an Arduino microcontroller for data collection. The Arduino platform, initially developed for electronics and robotics educational projects, has recently been incorporated in physics labs.7 The Arduino microcontroller, because of its low cost and because it provides a broad exposure to electronics and computer programming, is an ideal tool for integrated STEM projects.

An event-driven power management scheme for mobile consumer electronics

Abstract: Dynamic processor power management based on periodic monitoring of processor load is being widely used to enhance battery life of mobile consumer electronics. The existing power management schemes, however, often lead to poor user-perceived responsiveness, which is a crucial factor for the quality of user experiences, by making inadequate or delayed decisions on the processor performance level. This paper presents a novel event-driven scheme of the processor power management to guarantee high responsiveness while minimizing ineffective energy consumption. The proposed scheme exploits the characteristic of an interactive event, which is triggered by a user input instead of a periodic timer interrupt. The prototype of the proposed event-driven scheme is implemented for an application launch event as an example. In order to quantify user-perceived responsiveness and energy consumption simultaneously, this paper introduces a latency measurement benchmark program. In the evaluation with the benchmark, the proposed power management scheme showed comparable responsiveness with higher energy savings up to 20 % than the existing dynamic schemes when the interactive workload is mixed with a CPU-intensive background task.

Automatic reminding method and device for self-timer composition of intelligent terminal

Abstract: The invention discloses an automatic reminding method and device for self-timer composition of an intelligent terminal. The automatic reminding method includes that step 1, a user specifies a human face target area or calculates the composition position through default classic composition; step 2, the user starts shooting and automatic human face detection is performed on camera lens preview data; step 3, the human face position and size is compared with the human face target position and size to determine whether the current human face position is appropriate or not; step 4, if not, the user moves up and down, left and right and forward and back according to a voice prompt; step 5, otherwise, the user keeps still according to a voice prompt and a photograph is automatically taken. The automatic reminding method and device for the self-timer composition of the intelligent terminal can help the user obtain satisfying composition conveniently and intelligently when the user shoots through a rear camera lens.

Handling a radio link failure in communications

Abstract: A method for a communications system, wherein in response to detecting a radio link problem during a first phase of a radio link failure, a first user terminal (202) transmits (404) an indication of the detection of the radio link problem to a second user terminal (203) over a device-to-device link (206). In response to a report on the radio link problem detection of the first user terminal (202) being sent (406) from the second user terminal (203) to a network apparatus (201), the first user terminal (202) receives (409) a confirmation on a status of the report from the second user terminal (203) over the device-to- device link (206). Based on the confirmation, the first user terminal (202) decides (410), whether to stop a first radio link failure timer, reset the first radio link failure timer, or extend the first radio link failure timer.