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Jeffrey Peter
Jeffrey Peter Armitstead, North Sydney AU
| Patent application number | Description | Published |
|---|---|---|
| 20080251071 | Method and system for motor failure detection - Systems and methods for detecting developing faults in a flow generator or ventilator during therapeutic use thereof are provided. The motor current may be measured to estimate the torque input by the motor, while the output torque from the impeller may be determined (e.g., as inferred from the motor control system model and/or by consulting a lookup table). One or more transducers may collect data useful in determining the input and output torques. A difference between the input (to the motor) torque and the output (from the impeller) torque may be calculated. The difference, optionally filtered using a low-pass filter to reduce noise, may be compared to a predetermined threshold once or over a period of time to detect gross failures and/or developing failures. Once a failure or developing failure is detected, a user may be alerted and/or the flow generator may be placed into a “service required” mode. | 10-16-2008 |
| 20090078256 | METHOD AND APPARATUS FOR IMPROVED FLOW LIMITATION DETECTION OF OBSTRUCTIVE SLEEP APNEA - 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. | 03-26-2009 |
| 20100307500 | METHODS AND DEVICES FOR THE DETECTION OF HYPOPNOEA - Automated methods provide hypopnea detection for determining a hypopnea event and/or a severity of a hypopnea event. In some embodiments, a calculated short-term variance of a measured respiratory flow signal are compared to first and second proportions of a calculated long-term variance of the measured flow signal. A detection of the hypopnea may be indicated if the first measure falls below and does not exceed a range of the first and second proportions during a first time period. In some embodiments, a hypopnea severity measure is determined by automated measuring of an area bounded by first and second crossings of a short-term measure of ventilation and a proportion of a long-term measure. The detection methodologies may be implemented for data analysis by a specific purpose computer, a detection device that measures a respiratory airflow or a respiratory treatment apparatus that provides a respiratory treatment regime based on the detected hypopneas. | 12-09-2010 |
| 20110203588 | AUTOMATED CONTROL FOR DETECTION OF FLOW LIMITATION - A respiratory flow limitation detection device, which can include an airway pressure treatment generator, determines a flow limitation measure ( | 08-25-2011 |
Jeffrey Peter Armitstead, New South Wales AU
| Patent application number | Description | Published |
|---|---|---|
| 20120016218 | DISCRIMINATION OF CHEYNE-STOKES BREATHING PATTERNS BY USE OF OXIMETRY SIGNALS - Methods and apparatus provide Cheyne-Stokes respiration (“CSR”) detection based on a blood gas measurements such as oximetry. In some embodiments, a duration, such as a mean duration of contiguous periods of changing saturation or re-saturation occurring in an epoch taken from a processed oximetry signal, is determined. An occurrence of CSR may be detected from a comparison of the duration and a threshold derived to differentiate saturation changes due to CSR respiration and saturation changes due to obstructive sleep apnea. The threshold may be a discriminant function derived as a classifier by an automated training method. The discriminant function may be further implemented to characterize the epoch for CSR based on a frequency analysis of the oximetry data. Distance from the discriminant function may be utilized to generate probability values for the CSR detection. | 01-19-2012 |
Jeffrey Peter Bellinghausen, San Jose, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20100009752 | PASSIVE AND ACTIVE VIDEO GAME CONTROLLERS WITH MAGNETIC POSITION SENSING - Separate active and passive controllers each detect a generated magnetic field. The active controller phase corrects the detected magnetic field information transmitted from the passive controller and uses that to calculate the position and orientation of the passive controller. The active controller also phase corrects its own detected magnetic field information and uses that to calculate its position and orientation. The active controller transmits each of these calculated positions and orientations to a video game system directly or indirectly through the source of the generated magnetic field. The video game system is thus informed of the position and orientation of each of the active and passive controllers. Alternatively, the active controller creates a signal matrix using the phase corrected information and the position and orientation of a controller is calculated by either the source of the generated magnetic field or the video game system using the signal matrix. | 01-14-2010 |
| 20110028210 | Latency Solutions - In processing a game scene for display, in one embodiment input controller position information from a host memory is provided directly to a graphics processor rather than first being processed by a 3D application in a host processor. This results in more direct and timely processing of position information and reduces the number of 3D processing pipeline steps the controller position information must pass through thus reducing the user's perceived latency between moving the input controller and seeing the displayed results. In another embodiment, the input controller position information is provided directly from an input controller to a graphics card or subsystem rather than first going through a host processor or memory. This results in even more direct and timely processing of position information by further reducing the number of 3D processing pipeline steps the controller position information must pass through thus further reducing the user's perceived latency. | 02-03-2011 |
Jeffrey Peter Nobbs, Kowloon HK
| Patent application number | Description | Published |
|---|---|---|
| 20090309350 | DEVICE TO PRESENT CONTENT - Content is displayed in an apparatus, such as a book, using an input device, an electromechanical device, a light emitting device and an audio device. A user selects an input device coupled with the apparatus. In response to the selection, an object is moved within the apparatus with the electromechanical device while simultaneously flashing light from the light emitting device and playing a sound with the audio device. | 12-17-2009 |