Audience survey system

Details Audience survey system Audience survey system

1987-08-07

1989-07-11

George, Keith E.

Facsimile and static presentation processing

Static presentation processing

Attribute control

455 2, H04H 900, H04N 1700

Patent

active

048476854

ABSTRACT:
A system for automatically surveying television viewership detects horizontal and vertical synchronization signals and determines the relative phases of these signals with respect to a time base counter in a survey unit. All stations in the viewing area are monitored to determine the relative phases of the broadcast synchronization signals with respect to a time base counter of the monitoring unit. Then, the data are correlated to determine the channels being viewed. Correlation is made by comparing the direction and magnitude of phase shifts of the synchronization signals in the surveyed unit with the data produced by the unit monitoring all stations.

REFERENCES:
patent: 2903508 (1959-09-01), Hathaway
patent: 3130265 (1964-04-01), Leonard
patent: 3312900 (1967-04-01), Jaffe
patent: 3372233 (1968-03-01), Currey
patent: 3806805 (1974-04-01), Wall
patent: 4027332 (1977-05-01), Wu et al.
patent: 4031543 (1977-06-01), Holz
patent: 4511917 (1985-04-01), Kohler et al.
patent: 4577220 (1986-03-01), Laxton et al.
patent: 4697209 (1987-09-01), Kiewit et al.

Affiliated with

Also associated with

Rating

Audience survey system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Audience survey system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Audience survey system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-440690