System for communication using a broadcast audio signal
Patent 5213337 Issued on May 25, 1993. Estimated Expiration Date: 
May 25, 2010. 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.
May 25, 2010. 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 Re32305 3245157 3777410 Football game board Interactive television gaming system Digital preprogrammed television game system Dialog between TV movies and human viewers TV Movies that talk back Interactive video playback system Interactive system and method for the control of video playback devices InventorApplicationNo. 215655 filed on 07/06/1988US Classes:463/40, With communication link (e.g., television broadcast, etc.)434/307R, CATHODE RAY SCREEN DISPLAY AND AUDIO MEANS434/323, Cathode ray screen display included in examining means463/1, INCLUDING MEANS FOR PROCESSING ELECTRONIC DATA (E.G., COMPUTER/VIDEO GAME, ETC.)725/136, Interactive data transmitted in video signal band (e.g., VBI or HBI data)725/139Receiver (e.g., set-top box)ExaminersPrimary: Harrison, Jessica J.Attorney, Agent or FirmInternational ClassesA63F 009/22A63F 009/24 AbstractThis invention involves a system of communicating information using audio signals. In one embodiment, the information is encoded in touch tones on the sound track of a television game show. The information relates to the action of the show, and is broadcast in-band with the audio portion of the show. The show, and thus the information encoded in its audio portion, is received by an ordinary home television. A device for playing a game "listens" to the television speaker and decodes the information. The device allows home viewers to play a game based on the action of the show. The touchtones are substantially indiscernible to humans because they are quieter than most of the audio portion of the show, they are very brief, and they are masked by the show's usual sound effects.Other References
Field of SearchCathode ray screen display included in examining meansResponse of plural examinees communicated to monitor or recorder by electrical signals Response of plural examinees communicated to monitor or recorder by electrical signals AUDIO RECORDING AND VISUAL MEANS Suppressed carrier wave system | |
