# US 11,076,834 B2 · Common mode noise suppression using channel data processing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,076,834 B2 - Document ID: US11076834B2 - Status: Granted - Kind: B2 - Application number: 14/973,634 - Filed: 2015-12-17 - Published: 2017-03-16 - Granted: 2021-08-03 - Earliest claimed: 2015-09-11 - Assignees: Edan Instruments, Inc. - Applicants: Edan Instruments, Inc. - Inventors: Seshadri Srinivasan; Yang Peng; Yonggang Dong; Sean Murphy; Jianhua Mo - Web page: https://patentgrep.com/patent/US11076834B2 ## CPC - A61B 8/5269: {involving detection or reduction of artifacts} - A61B 8/4427: {Device being portable or laptop-like} - A61B 8/5207: {involving processing of raw data to produce diagnostic data, e.g. for generating an image} - G01S 7/52046: {Techniques for image enhancement involving transmitter or receiver (image enhancement by image data processing G06T5/00)} - G01S 7/52077: {with means for elimination of unwanted signals, e.g. noise or interference} - A61B 8/54: {Control of the diagnostic device} - G01S 7/52082: {involving a modular construction, e.g. a computer with short range imaging equipment (modular ultrasonic medical diagnostic devices A61B8/4411)} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES ## Abstract An ultrasound processing system includes an ultrasound interface and processing electronics. The ultrasound interface receives imaging information. The processing electronics are coupled to the ultrasound interface and are configured to perform processing across a plurality of ultrasound channels by combining channel data for adaptively reducing the common mode noise prior to beamforming for a transmit event. The combination of the channel data may be computing an arithmetic mean, which is then multiplied to a weighting coefficient. This value may then be removed from the individual channel data. The modified channel data is then transmitted to a beamformer, which processes the channel data for directional signal transmission and reception. ## Claims ### Claim 1 An ultrasound processing system, comprising: an ultrasound interface that receives ultrasound imaging information; and processing electronics coupled to the ultrasound interface and configured to utilize the ultrasound imaging information to perform processing across a plurality of ultrasound channels by: selecting channels from the plurality of ultrasound channels to be combined based on at least one of: a type of noise in the channels, an origin of the noise in the channels, a function of time of a transmit event in the channels, a function of depth of a spatial dimension in range in the channels, and a spatial dimension in azimuth of the channels; combining digital ultrasound channel data of the selected channels of the ultrasound imaging information prior to beamforming, the digital ultrasound channel data corresponding to a transmit event; generating weighted ultrasound channel data by applying a weighting coefficient to the combined digital ultrasound channel data; generating modified ultrasound channel data for each of the selected channels for adaptively reducing common mode noise of the digital ultrasound channel data from the selected channels by (i) applying a first operation to the digital ultrasound channel data using the weighted ultrasound channel data based on the common mode noise being additive noise or (ii) applying a second operation to the digital ultrasound channel data using the weighted ultrasound channel data based on the common mode noise being multiplicative noise; and providing the modified ultrasound channel data to a beamformer. ### Claim 2 (depends on 1) The ultrasound processing system of claim 1, wherein the processing electronics combine the digital ultrasound channel data by obtaining an arithmetic mean. ### Claim 3 (depends on 1) The ultrasound processing system of claim 1, wherein the processing electronics combine the digital ultrasound channel data adaptively as a function of time of a transmit event. ### Claim 4 (depends on 1) The ultrasound processing system of claim 1, wherein the processing electronics combine the digital ultrasound channel data adaptively as a function of depth of a spatial dimension in range. ### Claim 5 (depends on 1) The ultrasound processing system of claim 1, wherein the processing electronics combine the digital ultrasound channel data adaptively as a function of a channel of spatial dimension in azimuth. ### Claim 6 (depends on 1) The ultrasound processing system of claim 1, wherein the processing electronics combine the digital ultrasound channel data adaptively as a function of a combination of elements. ### Claim 7 (depends on 1) The ultrasound processing system of claim 1, wherein the weighting coefficients are based on spatial distribution. ### Claim 8 (depends on 1) The ultrasound processing system of claim 1, wherein the weighting coefficient is based on a function of combined elements. ### Claim 9 (depends on 1) The ultrasound processing system of claim 1, wherein the processing electronics remove digital ultrasound channel data multiplied by the weighting coefficient from the digital ultrasound channel data to generate the modified ultrasound channel data. ### Claim 10 (depends on 1) The ultrasound processing system of claim 1, wherein the processing electronics use the modified ultrasound channel data to determine which channels to eliminate from user. ### Claim 11 An ultrasound processing system, comprising: an ultrasound interface that receives ultrasound imaging information; and processing electronics coupled to the ultrasound interface and configured to utilize the ultrasound imaging information to perform processing across a plurality of ultrasound channels by: selecting a channels from the plurality of ultrasound channels to be combined based on at least one of: a type of noise in the channels, an origin of the noise in the channels, a function of time of a transmit event in the channels, a function of depth of a spatial dimension in range in the channels, and a spatial dimension in azimuth of the channels; combining digital ultrasound channel data of the selected channels of the ultrasound imaging information prior to beamforming, the digital ultrasound channel data corresponding to a transmit event; generating weighted ultrasound channel data by applying a weighting coefficient to the combined digital ultrasound channel data; generating modified ultrasound channel data for each of the selected channels for adaptively reducing common mode noise of the digital ultrasound channel data from the selected channels by (i) applying a first operation to the digital ultrasound channel data using the weighted ultrasound channel data based on the common mode noise being additive noise or (ii) applying a second operation to the digital ultrasound channel data using the weighted ultrasound channel data based on the common mode noise being multiplicative noise; and providing the modified ultrasound channel data to a beamformer.