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Gregorian
Alex Gregorian, Frankfurt DE
| Patent application number | Description | Published |
|---|---|---|
| 20100300569 | CORRUGATED HOSE - A corrugated hose | 12-02-2010 |
Felix Gregorian, North Chelmsford, MA US
| Patent application number | Description | Published |
|---|---|---|
| 20080230070 | Endotracheal Tube with Radiopaque Distal End Marker - An endotracheal tube comprising a tubular member including a distal portion and a distal end, a radiopaque stripe extending longitudinally along the distal portion of the tubular member, and a radiopaque ring encircling at least a portion of the tubular member at the distal end. The radiopaque ring may be a complete oval, a substantial arc of an oval, or a series of arcs of an oval. | 09-25-2008 |
Roubik Gregorian, Saratoga, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20110044216 | Systems, circuits and methods for an analog echo canceller with interpolating output - A method and system are described for canceling an echo signal in analog domain with adaptive filters working in digital domain. In one embodiment a system includes an analog-to-digital converter (ADC) sampling at two different phases to generate a first error signal and a second error signal having different phases. The ADC operates at a frequency significantly lower than the frequency at which the individual filters run. The first adaptive filter unit and a second adaptive filter unit are independently trained with the first and second error signals. respectively. The first and second adaptive filter units generate echo estimate signals used to cancel the echo signal. | 02-24-2011 |
| 20110044397 | Analog Echo Canceller with Interpolating Output - A method and system are described for canceling an echo signal with an echo canceller in the analog domain. In one embodiment, a system includes an echo canceller that includes an interpolation unit, operating in a digital domain, that receives a first digital echo estimate signal from an LMS unit and generates a second digital echo estimate signal without oversampling. A digital-to-analog converter (DAC) receives the second digital echo estimate signal and generates an analog echo estimate signal without oversampling. The echo canceller prevents the DAC from adding a high frequency component to the analog echo estimate signal. A subtractor adds the analog echo signal to an incoming signal having an echo signal. The subtractor generates an analog signal with reduced echo signal in the useful frequency band of the incoming signal. | 02-24-2011 |
Sarah Burgess Gregorian, Natick, MA US
| Patent application number | Description | Published |
|---|---|---|
| 20090029784 | Motion apparatus for use with infant carrier - A motion apparatus for use in combination with a standard infant carrier, such as a car seat. The motion apparatus comprises a support structure and a frame for receiving the transportable base of an infant car seat, and a drive assembly, which, when activated causes motion of the infant carrier. Methods and devices of the invention are useful to soothe an infant. | 01-29-2009 |