Patents by Inventor Daozheng Lu

Daozheng Lu 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).

  • Publication number: 20020059577
    Abstract: A television audience measurement system measures viewing of a television program viewed on digital television located in a statistically selected site by (i) retrieving an audience measurement data packet from a television set in order to identify the television program, (ii) detecting an audio code embedded in the television program in order to identify the television program, (iii) extracting an audio signature from the television program in order to identify the television program, (iv) identifying the television program through use of a software agent, and (v) selecting at least one of the retrieving means, the detecting means, the extracting means, and the software agent in order to identify the television program.
    Type: Application
    Filed: July 19, 2001
    Publication date: May 16, 2002
    Applicant: Nielsen Media Research, Inc.
    Inventors: Daozheng Lu, Paul C. Kempter, William A. Feininger
  • Publication number: 20020059576
    Abstract: A metering system useful in metering viewing of video displayed in a window on a screen of a viewing device includes a software meter and a creditor. The software meter determines identifying data related to the video displayed in the window, and the creditor applies a set of crediting rules in determining whether to credit the identifying data. The software meter determines whether the viewing device has a COM interface, an API interface, or has to be interrogated in another way, and determines channel data from a channel related object of the COM interface, from application related data associated with a video application through the API interface, or from other interrogation. The software meter also determines an ancillary identification code relating to the displayed video.
    Type: Application
    Filed: October 5, 2001
    Publication date: May 16, 2002
    Inventors: William A. Feininger, Daozheng Lu
  • Publication number: 20020059633
    Abstract: A detection apparatus includes a tuner tuned to the program and a meter coupled to the tuner and arranged to detect content ancillary information from the program tuned by the tuner. The content ancillary information may be a media link, closed captioning information, or the like. The meter may also be arranged to extract a broadcast signature from the program. A comparator compares the broadcast signature to a reference signature selected from a library of reference signatures based upon the content ancillary information. Broadcast signatures from unknown programs may be clustered at least partially on the basis of the content ancillary information.
    Type: Application
    Filed: September 19, 2001
    Publication date: May 16, 2002
    Inventors: David H. Harkness, Daozheng Lu, William A. Feininger, Craig M. Smithpeters
  • Publication number: 20020026635
    Abstract: A system identifies which of first and second signal sources is supplying a program signal to a monitored receiver. The first and second signal sources and the monitored receiver are located in a household. The system extracts a reference program signature representative of an output of the monitored receiver and first and second source program signatures representative of an output of the first and second signal sources. The system identifies-which of the first and second signal sources is a source of the program signal in response to the reference program signature and the first and second source program signatures.
    Type: Application
    Filed: May 17, 2001
    Publication date: February 28, 2002
    Applicant: Nielsen Media Research, Inc.
    Inventors: Henry B. Wheeler, Daozheng Lu
  • Publication number: 20020010919
    Abstract: A television audience measurement system measures viewing of a television program viewed on digital television located in a statistically selected site by (i) retrieving an audience measurement data packet from a television set in order to identify the television program, (ii) detecting an audio code embedded in the television program in order to identify the television program, (iii) extracting an audio signature from the television program in order to identify the television program, (iv) identifying the television program through use of a software agent, and (v) selecting at least one of the retrieving means, the detecting means, the extracting means, and the software agent in order to identify the television program.
    Type: Application
    Filed: September 12, 2001
    Publication date: January 24, 2002
    Applicant: Nielsen Media Research, Inc.
    Inventors: Daozheng Lu, Paul C. Kempter, William A. Feininger
  • Patent number: 6035177
    Abstract: A communication system for simultaneously transmitting ancillary codes and audio signals via a conventional audio communications channel using perceptual coding techniques is disclosed. An encoder monitors an audio channel to detect "opportunities" to insert an ancillary code such that the inserted signals are masked by the audio signal, as defined by the "perceptual entropy envelope" of the audio signal. An ancillary code containing, for example, an ID or serial number, is encoded as one or more whitened spread spectrum signals and/or a narrowband FSK ancillary code and transmitted at a time, frequency and/or level such that the data signal is masked by the audio signal. A decoder at a receiving location recovers the encoded ID or serial number.
    Type: Grant
    Filed: February 26, 1996
    Date of Patent: March 7, 2000
    Assignees: Donald W. Moses, Nielsen Media Research
    Inventors: Donald Wadia Moses, Daozheng Lu
  • Patent number: 5771307
    Abstract: In a passive identification apparatus for identifying a predetermined individual member of a television viewing audience in a monitored viewing area, a video image of a monitored viewing area is captured. A template matching score is provided for an object in the video image. A Eigenface recognition score is provided for an object in the video image. These scores may be provided by comparing objects in the video image to reference files. The template matching score and the Eigenface recognition score are fused to form a composite identification record from which a viewer may be identified. Body shape matching, viewer tracking, viewer sensing, and/or historical data may be used to assist in viewer identification. The reference files may be updated as recognition scores decline.
    Type: Grant
    Filed: December 21, 1995
    Date of Patent: June 23, 1998
    Assignee: Nielsen Media Research, Inc.
    Inventors: Daozheng Lu, Ceril T. Shagrin, William L. Thomas, Morris Lee, Bruce Bernard, Jia Zhang
  • Patent number: 5737025
    Abstract: In the present invention, an ancillary code is added to a composite video signal in its active video portion. The ancillary code may be spread over several frequencies and summed at the output of a decoder to enhance the legibility of the ancillary code at the output of the decoder. Frequency-stepping may be used to add the ancillary code at ones of a plurality of selected frequencies within the bandwidth of the composite video signal. The ancillary code may be hierarchically apportioned between respective uniquely specified sequential segments corresponding to many distribution points of the composite television signal. This hierarchical ancillary code may be frequency-interleaved between harmonics of the horizontal sync frequency of the composite video signal. The ancillary code may be redundantly added above and below the roll-off frequency of a VCR.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: April 7, 1998
    Assignee: Nielsen Media Research, Inc.
    Inventors: Robert A. Dougherty, David A. Kiewit, Daozheng Lu, Henry B. Wheeler
  • Patent number: 5737026
    Abstract: In the present invention, ancillary data is modulated onto a carrier frequency which is within a low energy density portion of a frequency band of a video signal, and the modulated carrier data is combined with the video signal so that the modulated carrier is in an overscan region of the video signal. The ancillary data may be spread over several frequencies and summed at the output of a decoder to enhance the legibility of the ancillary data at the output of the decoder. Frequency-stepping may be used to add the ancillary data at ones of a plurality of selected frequencies within the frequency band of the video signal. The ancillary data may be hierarchically apportioned between respective uniquely specified sequential segments corresponding to many distribution points of the video signal. This hierarchical ancillary data may be frequency-interleaved between harmonics of the horizontal sync frequency of the video signal.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: April 7, 1998
    Assignee: Nielsen Media Research, Inc.
    Inventors: Daozheng Lu, Henry B. Wheeler, Edgar W. Aust, Robert A. Dougherty
  • Patent number: 5594934
    Abstract: A correlation meter is disclosed for determining tuning status of a tunable receiver. The correlation meter receives an output of the tunable receiver, such as an acoustic audio output of the tunable receiver. An analog to digital converter converts the output of the tunable receiver to a digital sample side representation. An antenna or other signal collector receives reference side representations corresponding to channels to which the tunable receiver may be tuned. The correlation meter correlates the digital sample side representation and the reference side representations as the reference side representations are received by the correlation meter in order to determine the tuning status of the tunable receiver.
    Type: Grant
    Filed: September 21, 1994
    Date of Patent: January 14, 1997
    Assignee: A.C. Nielsen Company
    Inventors: Daozheng Lu, Barry P. Cook
  • Patent number: 5550928
    Abstract: In a passive identification apparatus for identifying a predetermined individual member of a television viewing audience in a monitored viewing area, a video image of a monitored viewing area is captured. A template matching score is provided for an object in the video image. A Eigenface recognition score is provided for an object in the video image. These scores may be provided by comparing objects in the video image to reference files. The template matching score and the Eigenface recognition score are fused to form a composite identification record from which a viewer may be identified. Body shape matching, viewer tracking, viewer sensing, and/or historical data may be used to assist in viewer identification. The reference files may be updated as recognition scores decline.
    Type: Grant
    Filed: December 15, 1992
    Date of Patent: August 27, 1996
    Assignee: A.C. Nielsen Company
    Inventors: Daozheng Lu, Ceril T. Shagrin, William L. Thomas, Morris Lee, Bruce Bernard, Jia Zhang
  • Patent number: 5481294
    Abstract: An audience measurement system collects data representative of tuned programs rather than of tuned channels, and includes (i) a household metering apparatus which records ancillary codes or extracts program signatures from the programs if no ancillary codes are found therein, (ii) a reference apparatus which monitors broadcast programs to be monitored, which extracts reference signatures therefrom, which records whatever ancillary codes may be associated with these broadcast programs and, if no ancillary codes are present, which compresses and stores a digital replica representative of the broadcast programs to be monitored, (iii) a data collection apparatus which compares the household and reference data to determine (a) which of the broadcast programs to be monitored were selected for viewing and/or listening, (b) which of the metered households selected the broadcast programs to be monitored for viewing and/or listening, and (c) at which times the broadcast programs to be monitored were selected for viewin
    Type: Grant
    Filed: October 27, 1993
    Date of Patent: January 2, 1996
    Assignee: A. C. Nielsen Company
    Inventors: William L. Thomas, Daozheng Lu
  • Patent number: 5432864
    Abstract: The present invention provides apparatus and method for verifying the identity of a person by comparing that person's face (or selected facial features) with an image generated using data stored on an identification card, badge, tag or other escort memory carried by the person. Both automatic and manual verification apparatus are disclosed, and both employ principal component methods that reduce the amount of data required to be carried by the bearer to under 100 bytes. The process of verifying identity involves combining data from the small escort memory with other image-related data that are general in nature and that are stored at the verification location. The system of the present invention is expected to find use in a wide variety of cases where a person's identity is to be established (e.g.
    Type: Grant
    Filed: October 5, 1992
    Date of Patent: July 11, 1995
    Assignees: Daozheng Lu, Simon W. Lu
    Inventors: Daozheng Lu, Simon W. Lu
  • Patent number: 5331544
    Abstract: A market research system and method are provided. A plurality of cooperating establishments are included in a market research test area. Each cooperating establishment is adapted for collecting and storing market research data. A computer system remotely located from the plurality of cooperating establishments stores market research data collected from the cooperating establishments. The collected market research data includes monitored retail sales transactions and captured video images of retail customers.
    Type: Grant
    Filed: April 23, 1992
    Date of Patent: July 19, 1994
    Assignee: A. C. Nielsen Company
    Inventors: Daozheng Lu, David A. Kiewit, Jia Zhang
  • Patent number: 5243423
    Abstract: A co-channel communication system allows transmission of one or more data signals in an active or visible portion of a video raster in a manner that is imperceptible to a viewer. More particularly, the data signal is transmitted over a preselected active video lines of a video raster. In order to reduce the perceptibility of the data signal, the video lines over which the data signal is transmitted is varied according to a random sequence. In an alternate embodiment, the data is also modulated at relatively low modulation levels, for example, by converting the data signal to a spread spectrum signal.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: September 7, 1993
    Assignee: A. C. Nielsen Company
    Inventors: Jean P. DeJean, Daozheng Lu, Robert Weissman
  • Patent number: 5165069
    Abstract: A method and apparatus are provided for identifying one of a plurality of operational modes of a monitored video cassette recorder (VCR). A sensor is positioned near the monitored VCR for detecting a radiated signal of the monitored VCR. The detected signal is appplied to a filter for filtering the detected signal and for providing a plurality of predetermined band-pass filtered signals. A neural network is used for processing the plurality of predetermined band-pass filtered signals to identify the operational mode of the VCR.
    Type: Grant
    Filed: July 30, 1990
    Date of Patent: November 17, 1992
    Assignee: A. C. Nielsen Company
    Inventors: James J. Vitt, Allen L. Fulmer, Daozheng Lu
  • Patent number: 5031228
    Abstract: An image recognition system and method are provided for identifying a pattern of a plurality of predetermined patterns in a video image. A plurality of feature image signatures are stored corresponding to each of the plurality of predetermined patterns. A universal feature image signature is stored that includes each of the stored feature image signatures. A predefined series of portions of a captured video image is sequentially compared with the universal feature image signature to identify matching portions. Each of the identified matching video image portions is compared with the stored feature image signatures to identify the predetermined pattern.
    Type: Grant
    Filed: September 14, 1988
    Date of Patent: July 9, 1991
    Assignee: A. C. Nielsen Company
    Inventor: Daozheng Lu
  • Patent number: 4858000
    Abstract: An image recognition method and system are provided for identifying predetermined individual members of a viewing audience in a monitored area. A pattern image signature is stored corresponding to each predetermined individual member of the viewing audience to be identified. An audience scanner includes audience locating circuitry for locating individual audience members in the monitored area. A video image is captured for each of the located individual audience members in the monitored area. A pattern image signature is extracted from the captured image. The extracted pattern image signature is compared with each of the stored pattern image signatures to identify a particular one of the predetermined audience members. These steps are repeated to identify all of the located individual audience members in the monitored area.
    Type: Grant
    Filed: September 14, 1988
    Date of Patent: August 15, 1989
    Assignee: A. C. Nielsen Company
    Inventor: Daozheng Lu
  • Patent number: 4697209
    Abstract: A method and apparatus for identifying programs such as television programs received from various sources detects the occurrence of predetermined events such as scene changes in a video signal and extracts a signature from the video signal. The signatures and the times of occurrence of the signatures are stored and subsequently compared with reference signatures to identify the program. The signatures may be compared in pairs to increase resolution, and the time interval between events or signatures may also be used to identify the program, either by themselves or in conjunction with the signatures.
    Type: Grant
    Filed: April 26, 1984
    Date of Patent: September 29, 1987
    Assignee: A. C. Nielsen Company
    Inventors: David A. Kiewit, Daozheng Lu
  • Patent number: 4677466
    Abstract: A method and apparatus for identifying repetitively broadcast programs, such as commercial advertisements broadcast on television and radio, detects the occurrence of predetermined events in a video signal and/or in an audio signal, detects a stability condition and extracts a signature from the video and/or audio signal. The signatures and the times of occurrence of the signatures are stored and subsequently compared with reference signatures to identify the program and its time of broadcast. The reference signatures may be obtained by identifying repetitively extracted, unidentified signatures and indexing a recording of the video and/or audio signals to enable the system user to identify the unidentified broadcast program and store the previously unidentified signatures as additional reference signatures in memory.
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: June 30, 1987
    Assignee: A. C. Nielsen Company
    Inventors: John G. Lert, Jr., Daozheng Lu