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| Number | Title | Issue Date |
| 7373182 | Wireless mobile phone including a headset A wireless mobile phone is provided with an input-output interface and an output interface. The input-output interface may be employed singularly to facilitate removable attachment of a telephony headset to the phone to receive at least telephony audio signals from ... | 05/13/2008 |
| 7366316 | Device to transmit and receive data for remote control of hearing devices A device to transmit and receive data for remote control of hearing devices has a reduced size achieved by the transmitter coils of the transmitter and the receiver coil of the receiver being wound around a common, shared core. Moreover, a protective capacitor that ... | 04/29/2008 |
| 7277551 | Sound reproducing apparatus and sound reproducing method A sound reproducing apparatus includes a low-frequency sound reproducing unit for reproducing and outputting a low-frequency sound having a frequency of a predetermined frequency or less; a high-frequency sound reproducing unit for reproducing and outputting a high-... | 10/02/2007 |
| 7266927 | Drive-in movie theater with short range sound system The present invention relates to a drive-in movie theater and/or events center preferably located on top of one or more parking garages located at a shopping mall or other similar complex. The drive-in theater preferably has a short range radio broadcast system that... | 09/11/2007 |
| 5889854 | Technique for compensating for signal attenuation on a telephone line An apparatus compensates for an attenuation of a signal on a telephone line in a communication system connected to the telephone line via a transformer. A photo coupler detects a loop current at a primary winding of the transformer. A controller generates... | 03/30/1999 |
| 5885085 | Drive-in interactive system A drive-in interactive performance system including a parking space in which at least a car can be parked and an interactive performance apparatus associated with the parking space and operable from within the car. The drive-in interactive performance sys... | 03/23/1999 |
| 4888789 | Adjustable equalizer for compensating for high frequency rolloff and typical AM receivers An audio equalization circuit for use in an AM transmission system is described which is particularly useful for compensating for the high frequency rolloff found in currently manufactured AM receivers. A single potentiometer adjustment in the feedback pa... | 12/19/1989 |
| 4307466 | Audio system for drive-in theaters A drive-in theater having an array of predesignated parking spaces and a central audio output device for generating a carrierless audio signal. Interface devices are located at the spaces and connected in parallel to the output device. Each interface devi... | 12/22/1981 |
| 4287388 | Drive-in theatre sound distribution system The invention relates to a sound distribution system for a drive-in theatre. The system comprises means for converting the sound track of a film into an audio information signal and means for transmitting the signal to at least one sound reproducing appar... | 09/01/1981 |
| 4209663 | Drive-in theater audio system A system for utilizing audio frequency wiring circuits at drive-in theaters to transmit radio frequency signals to patron automobile radio receivers with increased efficiency and a reduction in radiation of the radio frequency signals. The system employs ... | 06/24/1980 |
| 4047109 | Drive-in theater audio system A drive-in movie theater audio system provides sound to the patrons over their car radios and connects to each radio through a novel lead-in which couples the car radio antenna to a transmission bus connected to a central broadcast band transmitter. The l... | 09/06/1977 |
| 4027248 | Motion picture broadcasting sound delivery system A sound system, the sound track of a motion picture film is picked up and fed into an F.M. transmitter, the transmitter emitting modulated carrier waves in order to be picked up either by a plurality of F.M. portable receivers and F.M. vehicle receivers.... | 05/31/1977 |
| 3996518 | Inductive carrier communication systems A communication system for the transmission of the sound portion of motion pictures or the like in drive-in theaters directly to automobile radios by means of an induction cable buried beneath the ground in the reception area in which automobiles viewing ... | 12/07/1976 |
