Patents by Inventor Datong Chen
Datong Chen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10853847Abstract: A signature matrix is used to test each online event for inclusion of a user in a pre-generated lookalike audience. Locality Sensitive Hashing is used to compile the signature matrix to dramatically reduce memory storage requirements and processing time for each received online event. A technique of producing incremental signature matrices between generation of the full signature matrix helps to enable near-real time performance in processing each received event to see if a user associated with that event should be added to one of the lookalike audiences pre-generated by advertiser.Type: GrantFiled: May 13, 2016Date of Patent: December 1, 2020Assignee: Oath Inc.Inventors: Haiyan Luo, Datong Chen, Zhen Xia, Shiyong Cheng, Yi Mao, Shu Zhang, Jiayi Wen, Xiaojiang Cheng, Herve Marcellini
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Patent number: 10715612Abstract: Systems and methods for identifying users according to their activity are disclosed. The identification of a user includes accessing a user activity log having a plurality of identifiers and corresponding activity information for each identifier, determining identifiers having correlating activity information, and assigning identifiers having correlating activity information to a common user.Type: GrantFiled: September 15, 2015Date of Patent: July 14, 2020Assignee: Oath Inc.Inventors: Liang Wang, Zhen Xia, Datong Chen, Musen Wen
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Publication number: 20170330239Abstract: A signature matrix is used to test each online event for inclusion of a user in a pre-generated lookalike audience. Locality Sensitive Hashing is used to compile the signature matrix to dramatically reduce memory storage requirements and processing time for each received online event. A technique of producing incremental signature matrices between generation of the full signature matrix helps to enable near-real time performance in processing each received event to see if a user associated with that event should be added to one of the lookalike audiences pre-generated by advertiser.Type: ApplicationFiled: May 13, 2016Publication date: November 16, 2017Applicant: Yahoo Holdings, Inc.Inventors: Haiyan Luo, Datong Chen, Zhen Xia, Shiyong Cheng, Yi Mao, Shu Zhang, Jiayi Wen, Xiaojiang Cheng, Herve Marcellini
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Publication number: 20170078415Abstract: Systems and methods for identifying users according to their activity are disclosed. The identification of a user includes accessing a user activity log having a plurality of identifiers and corresponding activity information for each identifier, determining identifiers having correlating activity information, and assigning identifiers having correlating activity information to a common user.Type: ApplicationFiled: September 15, 2015Publication date: March 16, 2017Inventors: Liang Wang, Zhen Xia, Datong Chen, Musen Wen
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Publication number: 20140081696Abstract: Systems and methods for automatically forecasting the future availability of one or more resources, such as Internet advertising opportunities, are described herein. In accordance with various embodiments, a forecasting model that accounts for event-driven resource availability is trained based both on historical supply data and calendar information specifying events and event duration. The trained forecasting model is then used to forecast the availability of resources at one or more specified future time periods. In accordance with certain embodiments, the forecasting model comprises a Gaussian process model that has an event-driven kernel as a covariance function.Type: ApplicationFiled: November 25, 2013Publication date: March 20, 2014Applicant: Yahoo! Inc.Inventors: Konstantin Salomatin, Datong Chen, Qi He, Peiji Chen
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Publication number: 20140019232Abstract: Techniques are described herein for using an impression-trend technique to provide a display advertising supply forecast. A display advertising supply forecast is an estimate of a number of impressions, which are to occur in a future time period, that have specified attribute values. For example, the specified attribute values may be descriptive of impressions with respect to which an advertiser wishes to place ads. An impression-trend technique is a forecasting technique that uses trends regarding past impressions to forecast a number of future impressions that have specified attribute values. The past impressions include attribute values that are related to the specified attribute values.Type: ApplicationFiled: September 19, 2013Publication date: January 16, 2014Applicant: Yahoo! Inc.Inventors: Erik Vee, Jayavel Shanmugasundaram, Long Ji Lin, Peiji Chen, Datong Chen, Qi He
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Patent number: 8620720Abstract: Systems and methods for automatically forecasting the future availability of one or more resources, such as Internet advertising opportunities, are described herein. In accordance with various embodiments, a forecasting model that accounts for event-driven resource availability is trained based both on historical supply data and calendar information specifying events and event duration. The trained forecasting model is then used to forecast the availability of resources at one or more specified future time periods. In accordance with certain embodiments, the forecasting model comprises a Gaussian process model that has an event-driven kernel as a covariance function.Type: GrantFiled: April 28, 2011Date of Patent: December 31, 2013Assignee: Yahoo! Inc.Inventors: Konstantin Salomatin, Datong Chen, Qi He, Peiji Chen
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Patent number: 8554621Abstract: Techniques are described herein for using an impression-trend technique to provide a display advertising supply forecast. A display advertising supply forecast is an estimate of a number of impressions, which are to occur in a future time period, that have specified attribute values. For example, the specified attribute values may be descriptive of impressions with respect to which an advertiser wishes to place ads. An impression-trend technique is a forecasting technique that uses trends regarding past impressions to forecast a number of future impressions that have specified attribute values. The past impressions include attribute values that are related to the specified attribute values.Type: GrantFiled: March 17, 2010Date of Patent: October 8, 2013Assignee: Yahoo! Inc.Inventors: Erik Vee, Jayavel Shanmugasundaram, Long Ji Lin, Peiji Chen, Datong Chen, Qi He
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Patent number: 8347188Abstract: An apparatus and method of an outer Forward Error Correcting (FEC) code for a mobile broadcast service based on TD-SCDMA network is disclosed.Type: GrantFiled: February 27, 2008Date of Patent: January 1, 2013Assignee: Spreadtrum Communication (Shanghai) Co. Ltd.Inventors: Jian Cheng, Datong Chen, Jingdong Lin, Yi Kang
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Publication number: 20120278129Abstract: Systems and methods for automatically forecasting the future availability of one or more resources, such as Internet advertising opportunities, are described herein. In accordance with various embodiments, a forecasting model that accounts for event-driven resource availability is trained based both on historical supply data and calendar information specifying events and event duration. The trained forecasting model is then used to forecast the availability of resources at one or more specified future time periods. In accordance with certain embodiments, the forecasting model comprises a Gaussian process model that has an event-driven kernel as a covariance function.Type: ApplicationFiled: April 28, 2011Publication date: November 1, 2012Applicant: Yahoo! Inc.Inventors: Konstantin Salomatin, Datong Chen, Qi He, Peiji Chen
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Publication number: 20120158495Abstract: A network based advertisement system includes a supply forecasting system configured to select, from a campaign log database, data that defines a plurality of contracts. Each contract specifies requirements that include contract target audience information and a number of impressions. For each contract, the supply forecasting system identifies one or more opportunity samples with characteristics that match contract target audience information of the contract. Each opportunity sample is associated with a weight that corresponds to a number of opportunities with similar characteristics. An optimizer associates the opportunity samples with the contract and then determines whether the opportunity samples are associated with other contracts. The optimizer then limits the number of opportunities associated with the samples that are allocatable to the contract based at least in part on a function of requirements of other contracts associated with the one or more samples.Type: ApplicationFiled: December 20, 2010Publication date: June 21, 2012Inventors: Jayavel Shanmugasundaram, Datong Chen, Sumanth Jagannath, Erik Vee, Ramana Yerneni
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Publication number: 20120004957Abstract: Methods, systems, and apparatuses for generating supply forecasts for advertisement impressions are provided. Supply forecasts for future advertisement inventory are enabled to be determined that match attribute values received from a requester in a query or “contract.” Such supply forecasts may be determined based on cumulative or non-cumulative supply forecast values, and may be determined based on time series of supply forecast values for individual impressions or for blocks of impressions.Type: ApplicationFiled: July 2, 2010Publication date: January 5, 2012Applicant: YAHOO! INC.Inventors: Datong Chen, Erik Vee, Jayanth Anandaram, Qi He, Jayavel Shanmugasundaram, Peiji Chen
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Patent number: 8072960Abstract: A networking method of single frequency network in a TD-SCDMA system includes the steps of: (1) deciding a networking configuration scheme by a universal mobile telecommunications system terrestrial radio access network (UTRAN), (2) based on the decided networking configuration scheme, configuring an intra-frequency cell info list information element and an inter-frequency cell info list information element in system information and measurement control messages by the UTRAN, (3) transmitting signals over a servicing area by the UTRAN, and (4) receiving the system information and measurement control messages by a user equipment (UE) from the UTRAN, acquiring working mode configuration information of each frequency and each timeslot of a serving cell and neighboring cells, and judging whether there are duplicated cell information elements in the intra-frequency cell info list information element or the inter-frequency cell info list information element.Type: GrantFiled: January 30, 2008Date of Patent: December 6, 2011Assignee: Spreadtrum Communications, Inc.Inventors: Yanshan Shi, Ling Lv, Jingdong Lin, Datong Chen
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Publication number: 20110231248Abstract: Techniques are described herein for using an impression-trend technique to provide a display advertising supply forecast. A display advertising supply forecast is an estimate of a number of impressions, which are to occur in a future time period, that have specified attribute values. For example, the specified attribute values may be descriptive of impressions with respect to which an advertiser wishes to place ads. An impression-trend technique is a forecasting technique that uses trends regarding past impressions to forecast a number of future impressions that have specified attribute values. The past impressions include attribute values that are related to the specified attribute values.Type: ApplicationFiled: March 17, 2010Publication date: September 22, 2011Applicant: YAHOO! INC.Inventors: Erik Vee, Jayavel Shanmugasundaram, Long Ji Lin, Peiji Chen, Datong Chen, Qi He
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Publication number: 20110208591Abstract: Disclosed is a system to forecast a supply of online advertising demand contracts having day parting targets. The system may receive an online advertising demand contract having a flight duration and a day parting target. The received online advertising demand contract may be processed by converting the day parting target into an hour-of-week day parting target vector. If a first day of the flight duration would generate a conflict in view of the hour-of-week day parting target vector, then the system may generate a new first day contract for the first day of the flight duration.Type: ApplicationFiled: February 24, 2010Publication date: August 25, 2011Inventors: Datong Chen, Erik Vee, Jayanth Anandaram, Jayavel Shanmugasundaram, Peiji Chen
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Patent number: 7969947Abstract: A mobile TV broadcast system based on TD-SCDMA network is disclosed herein.Type: GrantFiled: January 28, 2008Date of Patent: June 28, 2011Assignee: Spreadtrum Communications, Inc.Inventors: Jian Cheng, Datong Chen, Kang Yi, Zhiqun Chen, Jingdong Lin
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Publication number: 20100326427Abstract: A one-axis sun position tracking device with its rotation axis parallel to the rotation axis of the Earth, rotates perpetually at a constant speed in the opposite direction of the Earth's rotation. This device comprises a shaft that is aligned to the Earth's polar axis, one or more crossbars are rigidly attached to and perpendicular to the shaft, solar energy collectors are mounted on the crossbar and could rotate around the crossbar that defines declination angle. A self-latched declination angle adjustment mechanism keeps the declination angle constant at most of time. A drive mechanism keeps this solar tracker to rotate perpetually. An automatic and abrupt declination angle change will keep the declination angle updated to correct value each day. A similarly configured two-axis tracker that continuously updates its declination angle by a mechanism derived from a differential coaxial rotation.Type: ApplicationFiled: June 25, 2010Publication date: December 30, 2010Inventor: Datong Chen
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Publication number: 20090266354Abstract: A solar energy collecting device includes a rotation axis to be mounted parallel to the earth's polar axis, a solar energy collector mounted for rotation around the rotation axis at a predetermined rotation speed, the solar energy collector defining a tilt angle with respect to the rotation axis, and a tilt angle adjustment mechanism for automatically and intermittently adjusting the tilt angle. Various configurations of the solar energy collector are possible, and the rotation speed may be one revolution per day or half a revolution per day depending on the solar energy collector configuration. Many drive modes are possible, including rotating continuously throughout a day or rotating during daylight hours and rotating backward or forward at night. The tilt angle adjustment mechanism includes a handle fixed to the solar energy collector and a tilt angle change guide.Type: ApplicationFiled: June 2, 2007Publication date: October 29, 2009Applicant: RENEWATT CORPORATIONInventor: Datong Chen
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Publication number: 20090190547Abstract: Networking methods of a Single Frequency Network (SFN) in communication systems are disclosed.Type: ApplicationFiled: January 30, 2008Publication date: July 30, 2009Inventors: Yanshan Shi, Ling Lv, Jingdong Lin, Datong Chen
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Patent number: 7456887Abstract: An improved active pixel sensor soft reset circuit for reducing image lag while maintaining low reset kTC noise. The circuit pulls down the sensor potential to a sufficiently low level before the soft reset function is completed. The level to which the sensor potential is pulled is set between 0 and the critical potential at which the reset transistor will be on when the soft reset function begins. The timing of the pull down function is such that the sensor is stabilized at the low potential before the soft reset function completes. In one embodiment, the sensor potential is pulled down using a pull-down circuit, which may consist of a CMOS type inverter. In another embodiment, the sensor potential is pulled down by the bit line. Two ways in which the bit line may be pulled down are natural discharge, or by increasing the bias on the loading transistor. Two ways in which the bias on the loading transistor may be increased are a biasing circuit, or by using a pull-down transistor.Type: GrantFiled: October 21, 2003Date of Patent: November 25, 2008Assignee: OmniVision Technologies, Inc.Inventors: Tiemin Zhao, Xinping He, Qingwei Shan, Datong Chen