41
Daozheng Lu, David H Harkness: Coded/non-coded program audience measurement system. Nielsen Media Research, James A Flight, Grossman & Flight, March 25, 2004: US20040058675-A1

An audience measurement system identifies a program which is broadcast from a signal source and to which a receiver is tuned. The audience measurement system includes a code reader for reading an ancillary code of the program to which the receiver is tuned, a channel status detector for determining ...


42
Daozheng Lu, Paul C Kempter, William A Feininger: Audience measurement systems and methods for digital television. James A Flight, Hanley Flight & Zimmerman, March 8, 2007: US20070055987-A1

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 cod ...


43
David H Harkness, Daozheng Lu, William A Feininger, Craig M Smithpeters: Detection of media links in broadcast signals. Marshall O Toole Gerstein Murray & Borun, May 16, 2002: US20020059633-A1

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 ...


44
William A Feininger, Daozheng Lu: Metering viewing of video displayed in windows. Katten Muchin Zavis, May 16, 2002: US20020059576-A1

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 dete ...


45
Daozheng Lu, Paul C Kempter, William A Feininger: Audience measurement system for digital television. Nielsen Media Research, Marshall O Toole Gerstein Murray & Borun, May 16, 2002: US20020059577-A1

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 cod ...


46
Daozheng Lu, Keqiang Deng: Apparatus and method for measuring tuning of a digital broadcast receiver. Marshall Gerstein & Borun, August 22, 2002: US20020114299-A1

An apparatus identifies a program selected for reception on a monitored receiver. The monitored receiver has a receiver output, and the selected program is one of a plurality of receivable programs. The apparatus includes a tuner and demodulator arranged to receive a predetermined one of the program ...


47
Daozheng Lu, David H Harkness: Coded/non-coded program audience measurement system. Hanley Flight & Zimmerman, November 20, 2008: US20080288972-A1

An audience measurement system identifies a program which is broadcast from a signal source and to which a receiver is tuned. The audience measurement system includes a code reader for reading an ancillary code of the program to which the receiver is tuned, a channel status detector for determining ...


48
Henry B Wheeler, Daozheng Lu: Source detection apparatus and method for audience measurement. Nielsen Media Research, Marshall O Toole Gerstein Murray & Borun, February 28, 2002: US20020026635-A1

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 monitore ...


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John C Peiffer, Michael A Hicks, David H Wright, Paul M Mears, Venugopal Srinivasan, Daozheng Lu, Paul C Kempter: Method and apparatus for identifying a digital audio dignal. James A Flight, Grossman & Flight, October 21, 2004: US20040210922-A1

Method and apparatus for identifying broadcast digital audio signals include structure and/or function whereby the digital audio signal is provided to processing structure which is configured to (i) identify a program-identifying code in the received digital audio signal, (ii) identify a program-ide ...


50
Venugopal Srinivasan, Keqiang Deng, Daozheng Lu: Audio signature extraction and correlation. Hanley Flight & Zimmerman, October 20, 2005: US20050232411-A1

A signature is extracted from the audio of a program received by a tunable receiver such that the signature characterizes the program. In order to extract the signature, blocks of the audio are converted to corresponding spectral moments. At least one of the spectral moments is then converted to the ...