Audio information dissemination using various transmission modes
December 18, 2016. 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 ReferencesRe-linked portable data terminal controller system Scrambling system for television sound signals System for transmitting information provided with means for controlling access to the information transmitted Remote tuner control system Price quotation system Digital audio scrambling system with error conditioning International commodity trade exchange Mobile radio data communication system using a speech recognition technique Scrambling system for an audio frequency signal Digital audio scrambling system with pulse amplitude modulation InventorAssigneeApplicationNo. 769092 filed on 12/18/1996US Classes:380/237, Including digital audio380/241, Having program ID or authorization380/269, Having compression455/45, Via subcarrier705/51Usage protection of distributed data filesExaminersPrimary: Gregory, Bernarr E.Attorney, Agent or FirmForeign Patent References
International ClassesH04L 009/00H04B 001/06 AbstractA system and method of information dissemination that permits the user to listen to the specific content of information when and where he or she wants to. A radio or television receiver system receives information from a FM subcarrier, a television vertical blanking interval transmission, a television separate audio program transmission or a dedicated channel and stores the transmitted information in a memory. A user interface allows selection from the memory of the stored information via a set of menus controlling a hierarchical database, so as to access particular items of information. Typically the system includes RAM and/or a storage medium such as a digital audio tape,a magneto-optical mini-disk, a magnetic disk or optical disk, sufficient to store information for 10 hours of audio. A decompression device, accepts the accessed compressed digital audio information items which may have been encrypted and transforms them into spoken speech. The user interface is either by voice or a single or multi-position switch allowing scanning through and selection from the menu items. The signal for such a device is generated by converting analog audio signals into a digital audio data stream which may be encrypted. The encrypted digital data stream is compressed and inserted on the radio or television carrier via an FM Subcarrier, the television vertical interval or the separate audio program channel of a television transmitter. The system is also capable of transmitting alphanumeric data and converting this alphanumeric to a voice form using a speech synthesizer. | |
