Abstract: Methods and apparatus for treating a respiratory disorder, in one aspect, include an apparatus that delivers backup breaths at a sustained timed backup rate that is a function of the patient's spontaneous respiratory rate. Other aspects include apparatus that delivers backup breaths at a rate that gradually increases from a spontaneous backup rate to a sustained timed backup rate or, alternatively, apparatus that oscillates a treatment pressure in antiphase with the patient's spontaneous respiratory efforts when a measure indicative of ventilation is greater than a threshold. Other aspects include apparatus configured to treat Cheyne-Stokes respiration by computing the treatment pressure so as to bring a measure indicative of ventilation of the patient towards a target ventilation that is dependent on the measure indicative of ventilation or, alternatively, by periodically elevating the treatment pressure to a high level for a short time.

Abstract: Logic of a handheld controller can implement sensor fusion algorithms based on force data provided by a force sensing resistor (FSR) in combination with touch data or proximity data provided by a touch sensor or an array of proximity sensors, respectively. An example sensor fusion algorithm can be used to re-calibrate the FSR when an object contacts an associated control, as detected by the touch sensor. Another example sensor fusion algorithm can be used to ignore spurious inputs detected by the FSR when an object is in contact with an adjacent control. Another example sensor fusion algorithm can be used to detect a hand size of a hand grasping a handle of the controller, as detected by the array of proximity sensors, and to adjust the threshold force to register a FSR input event at the FSR according to the hand size.

Abstract: Automated methods provide leak detection that may be implemented in a respiratory treatment apparatus. In some embodiments, the detection apparatus may automatically determine and score different types of leak events during a treatment session, including, for example, continuous mouth leak events and valve-like mouth leak events. The detection methodologies may be implemented as a data analysis of a specific purpose computer or a detection device that measures a respiratory airflow or a respiratory treatment apparatus that provides a respiratory treatment regime based on the detected leak. In some embodiments, the leak detector may determine and report a leak severity index. Such an index may combine data that quantifies different types of leak events.

Abstract: Apparatus and methods provide compliance management tools such as for respiratory pressure therapy. In some versions, a respiratory pressure therapy system may include one or more processors, such as of a data server, configured to communicate with a computing device and/or a respiratory pressure therapy device. The respiratory pressure therapy device may be configured to deliver respiratory pressure therapy to a patient for a session. The computing device may be associated with the patient. The processor(s) may be further configured to compute a therapy quality indicator of the session from usage data relating to the session. The therapy quality indicator may be a number derived from contributions of a plurality of usage variables for the session in the usage data. The processor(s) may be further configured to present, such as by transmitting, the therapy quality indicator to the computing device. The therapy quality indicator may promote patient compliance.

Abstract: A respiratory flow limitation detection device, which can include an airway pressure treatment generator, determines a flow limitation measure based one or more shape indices for detecting partial obstruction and a measure of a patient's ventilation or respiratory duty cycle. The shape indices may be based on function(s) that ascertain the likelihood of the presence of M-shaped breathing patterns and/or chair-shaped breathing patterns. The measure of ventilation may be based on analysis of current and prior tidal volumes to detect a less than normal patient ventilation. The duty cycle measure may be a ratio of current and prior measures of inspiratory time to respiratory cycle time to detect an increase in the patient's inspiratory cycle time relative to the respiratory cycle time. A pressure setting based on the flow limitation may then be used to adjust the treatment pressure to ameliorate the patient's detected flow limitation condition.

Abstract: A respiratory flow limitation detection device, which can include an airway pressure treatment generator, determines a flow limitation measure 506 based one or more shape indices for detecting partial obstruction and a measure of a patient's ventilation or respiratory duty cycle. The shape indices may be based on function(s) that ascertain the likelihood of the presence of M-shaped breathing patterns and/or chair-shaped breathing patterns. The measure of ventilation may be based on analysis of current and prior tidal volumes to detect a less than normal patient ventilation. The duty cycle measure may be a ratio of current and prior measures of inspiratory time to respiratory cycle time to detect an increase in the patient's inspiratory cycle time relative to the respiratory cycle time. A pressure setting based on the flow limitation may then be used to adjust the treatment pressure to ameliorate the patient's detected flow limitation condition.

Abstract: Automated methods provide leak detection that may be implemented in a respiratory treatment apparatus. In some embodiments, the detection apparatus may automatically determine and score different types of leak events during a treatment session, including, for example, continuous mouth leak events and valve-like mouth leak events. The detection methodologies may be implemented as a data analysis of a specific purpose computer or a detection device that measures a respiratory airflow or a respiratory treatment apparatus that provides a respiratory treatment regime based on the detected leak. In some embodiments, the leak detector may determine and report a leak severity index. Such an index may combine data that quantifies different types of leak events.

Abstract: There is described an orthosis comprising: a first portion adapted to be secured to an upper arm region of a wearer; a second portion hingedly connected to the first portion and comprising a pair of elongate members spaced apart to extend along opposing sides of a lower arm region of the wearer, each of the elongate members terminate at a distal end adjacent to a wrist of the wearer and being connected by a connecter extending at least partially around the wrist of the wearer; wherein, the distal ends of the elongated members each have a connector element formed therein for facilitating engagement with the wearer's hand so as to maintain the wearer's hand in either a pronated or a supinated position.

Abstract: A first playback device may include at least one battery, a network interface, at least one processor, a non-transitory computer-readable medium, and program instructions stored on the non-transitory computer-readable medium. The program instructions may be executable by the at least one processor such that the first playback device is configured to (i) receive an instruction to operate as a group coordinator of a synchrony group, (ii) determine a value of a battery state variable of the at least one battery, (iii) based on the value of the battery state variable of the at least one battery, select a second playback device from one or more other members of the synchrony group to operate as the group coordinator of the synchrony group, and (iv) cause the second playback device to operate as the group coordinator of the synchrony group.

Abstract: In a respiratory apparatus for treatment of sleep apnea and other disorders associated with an obstruction of a patient's airway and which uses an airflow signal, an obstruction index is generated which detects the flattening of the inspiratory portion of the airflow. The flattening index serves as an obstruction index used to differentiate normal and obstructed breathing. The obstruction index is based upon comparison of values of airflow in different sectors of the inspiratory peak of the wave function and is particularly suitable for distinguishing M shaped or square shaped respiratory patters indicative of partially obstructed airways.

Abstract: A Cheyne-Stokes (CS) diagnosis system classifies periods of CS-like breathing by examining a signal indicative of a respiratory parameter. For example, nasal flow data is processed to classify it as unambiguously CS breathing or nearly so and to display the classification Processing may detect and display: apnoeas, hypopnoeas, flow-limitation and snore. The signal may be split into equal length epochs and event features are extracted. Statistics are applied to these primary feature(s) to produce secondary feature(s) representing the entire epoch. Each secondary feature is grouped with other feature(s) extracted from the entire epoch rather than from the epoch events. This final group of features is the epoch pattern. The epoch pattern is classified to produce a probability for possible event classes (e.g., Cheyne-Stokes breathing, OSA, etc.). The epoch is assigned to the class with the highest probability, which may both be reported as an indication of disease state.

Abstract: Disclosed herein are playback devices, groups of playback devices, and methods of operating playback devices and groupings thereof, wherein individual playback devices are configured to detect and correct clock rate drift by synchronizing a clock rate and perhaps clock time of a local clock to a remote time source.

Abstract: Implementations of methods of forming capacitors may include depositing a first metal layer over a substrate, forming a photoresist layer over the first metal layer, patterning the photoresist layer, patterning the first metal layer using the pattern of the photoresist layer, depositing a dielectric layer over the first metal layer, and depositing a second metal layer over the dielectric layer to form a metal-insulator-metal capacitor.

Abstract: Example techniques relate to re-establishing connectivity of playback devices. In an example implementation, a first playback device determines that a first access point has been replaced with a second access point, wherein the first playback device previously established a valid network connection over the first WLAN using first network parameters. The first playback device connects to the second access point, the second access point providing a second WLAN. The first playback device requests, via the wireless network interface from the second access point, an IP address in a second subnet, the second subnet covering a different range of IP addresses than the first subnet and establishes a network connection over the second WLAN using second network parameters stored in the data storage of the first playback device.

Abstract: A stacked assembly of semiconductor devices includes a mounting pad covering a first portion of a low-side semiconductor device, and a contact layer covering a second portion of the low-side semiconductor device. A first mounting clip electrically connected to the contact layer has a supporting portion joining the first mounting clip to a first lead frame portion. A second mounting clip attached to the mounting pad has a supporting portion joining the second mounting clip to a second lead frame portion. A high-side semiconductor device has a first terminal electrically connected to the first mounting clip and thereby to the contact layer, and a second terminal electrically connected to the second mounting clip.

Abstract: A door status monitoring system may include a control unit in communication with a first and a second display element. A switch modulator may be coupled to a door. The switch modulator may be proximate to a first position switch when the door is in the closed position that may send a first signal to a control unit, and the control unit may maintain the first and second display elements in a deactivated state in response to receiving the first signal. The switch modulator may be proximate to a second position switch when the door is in the open position that may send a second signal to the control unit. The control unit may activate the first display element when it is not receiving the first and second signals, and the control unit, in response to receiving the second signal, may activate the second display element and deactivate the first display element.

Abstract: An event-recording circuit for recording electrical events experienced by an internal circuit in a semiconductor device is disclosed. The event-recording circuit is coupled to the internal circuit via a spark gap circuit. The spark gap circuit includes one or more encapsulated air-gap structures that are fabricated using a process flow that matches, or is adapted from, a process flow used in fabricating the semiconductor device. The event-recording circuit further includes a recording device that has an electrical property that is changed by a signal passed by the spark gap circuit, such as an ESD or EOS signal. Accordingly, a test may be performed to determine the presence, and in some cases the extent, of the change to the electrical property in a failure analysis of the semiconductor device.

Abstract: A technology is described for generating sensory effects linked to virtual objects. In one example, a virtual object associated with a sensory attribute can be generated in a virtual reality environment. The virtual object may be associated with a sensory attribute which can be simulated using a defined sensory input generated by a sensory rendering device. A virtual object position can be determined for the virtual object relative to a virtual user position for a virtual user in the virtual reality environment. One or more sensory rendering devices can be identified to generate the defined sensory input, and the one or more sensory rendering devices can be activated to generate the defined sensory input.

Abstract: Various game controller hardware and user interface configurations are disclosed. Some configurations may comprise two circular trackpads, driven by the player's thumbs, which may be clickable, allowing the entire surface to act as a button. Haptic feedback may be based on dual linear resonant actuators (e.g., by means of strong, weighted electro-magnets attached to each of the dual trackpads), capable of delivering a wide range of force and vibration, allowing control over frequency, amplitude, and direction of movement. The haptics-related components in certain implementations may also play audio waveforms and thereby function as speakers. In the center of the controller according to certain configurations may be another touch-enabled surface, this one backed by a display screen. In some configurations this entire screen itself may also be clickable, like a large single button. A variety of other exemplary implementations and configurations are described.

Abstract: A first playback device may include at least one battery, a network interface, at least one processor, a non-transitory computer-readable medium, and program instructions stored on the non-transitory computer-readable medium. The program instructions may be executable by the at least one processor such that the first playback device is configured to (i) receive an instruction to operate as a group coordinator of a synchrony group, (ii) determine a value of a battery state variable of the at least one battery, (iii) based on the value of the battery state variable of the at least one battery, select a second playback device from one or more other members of the synchrony group to operate as the group coordinator of the synchrony group, and (iv) cause the second playback device to operate as the group coordinator of the synchrony group.