Technique for surveying a radio or a television audience
October 26, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3906450 Automatic monitor for programs broadcast Broadcast program identification method and system Television audience measuring system Method of and apparatus for monitoring video-channel reception Television monitoring device Survey of radio audience Remote control hearing aid Method of and system for identification and verification of broadcasted program segments Method of and system for identification and verification of broadcasting television and radio program segments InventorApplicationNo. 548591 filed on 10/26/1995US Classes:455/2.01, AUDIENCE SURVEY OR PROGRAM DISTRIBUTION USE ACCOUNTING725/18By use of audio signalExaminersPrimary: Urban, Edward F.Attorney, Agent or FirmForeign Patent References
International ClassH04B 017/00AbstractA surveying technique transmits a combined signal made up of a programming signal and a surveying signal, both of which are in the audible range. The surveying signal is uniquely coded to identify a signal source such as a radio station or television channel. At the receiver, the surveying signal is separated from the programming signal and then modified so as to be reproduced outside the audible range for detection by a portable unit worn by a person being monitored for his listening and/or viewing habits. The detection of the inaudible survey signal by the portable unit identifies the signal source to which the person was tuned.Field of SearchWith wireless synchronization | |
