Ling Zheng from 11524 Dogwood Hills Dr, Clarksburg, MD 20871, age 60

Communication Channel Capacity Estimation
view source
US Patent:

7660395, Feb 9, 2010
Filed:

Feb 11, 2005
Appl. No.:

10/596889
Inventors:

Ling Zheng - Billerica MA, US
Michael A. Lund - W. Newton MA, US
Assignee:

Aware, Inc. - Bedford MA
International Classification:

H04M 1/24
H04M 3/08
H04M 3/22
US Classification:

379 104
Abstract:

Prediction of a channel capacity is accomplished based on a TDR echo without explicitly estimating the topology of the line. The prediction is based on obtaining a measured TDR echo, determining a theoretical TDR echo for a plurality of loop lengths, estimating the equivalent TDR length based on an optimization, updating the equivalent TDR length and utilizing the updated TDR length to predict one or more of the upstream and downstream data rates.

Communication Channel Capacity Estimation
view source
US Patent:

20100135469, Jun 3, 2010
Filed:

Dec 23, 2009
Appl. No.:

12/646005
Inventors:

Ling Zheng - Billerica MA, US
Michael A. Lund - W. Newton MA, US
Assignee:

AWARE, INC. - Bedford MA
International Classification:

H04M 1/24
H04M 3/22
US Classification:

379 104
Abstract:

Prediction of a channel capacity is accomplished based on a TDR echo without explicitly estimating the topology of the line. The prediction is based on obtaining a measured TDR echo, determining a theoretical TDR echo for a plurality of loop lengths, estimating the equivalent TDR length based on an optimization, updating the equivalent TDR length and utilizing the updated TDR length to predict one or more of the upstream and downstream data rates.

Adaptive Notch Filter
view source
US Patent:

20140039824, Feb 6, 2014
Filed:

Apr 20, 2012
Appl. No.:

14/112154
Inventors:

Ling Zheng - Acton MA, US
Yu Chen - Andover MA, US
International Classification:

A61B 5/00
US Classification:

702106, 600509
Abstract:

A patient monitoring device and method that determines and monitors at least one patient parameter is provided. A configuration processor generates configuration information in response to a first input signal and an adaptive notch filter receives a second input signal. The second input signal includes a signal of interest and an interference signal in a predetermined frequency range. The adaptive notch filter automatically estimates the interference signal within the second input signal based on a filter parameter and removes the estimated interference signal from the second input signal to generate a target signal. A step processor is electrically coupled between the configuration processor and the adaptive notch filter and sets a value of the filter parameter based on the configuration information, wherein the adaptive notch filter uses the filter parameter to reduce a ringing artifact on the target signal below a threshold level.

Infusion System
view source
US Patent:

20220273871, Sep 1, 2022
Filed:

Jul 7, 2020
Appl. No.:

17/626414
Inventors:

- Osaka-shi, Osaka, JP
Ling Zheng - Acton MA, US
Assignee:

Takeda Pharmaceutical Company Limited - Osaka-shi, Osaka
International Classification:

A61M 5/172
A61M 5/142
A61M 5/14
Abstract:

An infusion system includes a pump unit and a motor unit. The pump unit may be configured to receive and/or retain at least one container of medicinal fluid, and may include a fluid distribution system at least partially engaged with a peristaltic pump head disposed in the pump unit. The motor unit may be removably received in the pump unit and coupled to the peristaltic pump head to drive fluid from the container to a fluid outlet that is couplable to an infusion set.

System And Method For Dynamically Calibrating And Measuring Analyte Concentration In Diabetes Management Monitors
view source
US Patent:

20190317104, Oct 17, 2019
Filed:

Jun 27, 2019
Appl. No.:

16/455307
Inventors:

- Franklin Lakes NJ, US
Ling Zheng - Acton MA, US
James Petisce - Westford MA, US
Assignee:

Becton, Dickinson and Company - Franklin Lakes NJ
International Classification:

G01N 33/66
A61B 5/1455
A61B 5/145
A61B 5/1459
A61M 5/172
A61B 5/1495
A61B 5/00
Abstract:

An optical analyte sensor and diabetes management system is provided. The sensor preferably includes a hydrogel matrix for receiving a sample containing an analyte at unknown concentration, a light emitter for emitting light at a stimulation frequency, a light receiver for receiving a fluorescence signal at a first isosbestic frequency, and at a second frequency, for measuring an intensity of the fluorescence signal and the first and second frequencies. A processor determines a concentration of the analyte based on the respective intensities.

System And Method For Dynamically Calibrating And Measuring Analyte Concentration In Diabetes Management Monitors
view source
US Patent:

20150185225, Jul 2, 2015
Filed:

Jul 31, 2014
Appl. No.:

14/448867
Inventors:

- Franklin Lakes NJ, US
Ling Zheng - Acton MA, US
James Petisce - Westford MA, US
Assignee:

BECTON, DICKINSON AND COMPANY - Franklin Lakes NJ
International Classification:

G01N 33/66
A61B 5/00
A61M 5/172
A61B 5/145
A61B 5/1459
Abstract:

An optical analyte sensor and diabetes management system is provided. The sensor preferably includes a hydrogel matrix for receiving a sample containing an analyte at unknown concentration, a light emitter for emitting light at a stimulation frequency, a light receiver for receiving a fluorescence signal at a first isosbestic frequency, and at a second frequency, for measuring an intensity of the fluorescence signal and the first and second frequencies. A processor determines a concentration of the analyte based on the respective intensities.

Electrocardiogram Baseline Removal
view source
US Patent:

20140222350, Aug 7, 2014
Filed:

Jun 7, 2012
Appl. No.:

14/343359
Inventors:

Ling Zheng - Andover MA, US
Yu Chen - Andover MA, US
Assignee:

Draeger Medical Systems, Inc. - Andover MA
International Classification:

A61B 5/04
A61B 5/00
US Classification:

702 19
Abstract:

A system includes a low pass-filter and a Savitzky-Golay filter. The low-pass filter receives and processes a first electrocardiogram signal. The filter removes at least the high frequency components of the first electrocardiogram signal. The Savitzky-Golay filter estimates a baseline variation of the first electrocardiogram signal from the filtered first electrocardiogram signal. Related apparatus, systems, techniques and articles are also described.