Video/audio transmission systsem and method
Patent 5045940 Issued on September 3, 1991. Estimated Expiration Date: 
December 22, 2009. 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.
December 22, 2009. 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 3609227 Audio-visual monitoring system Multi-location video conference system Audio-video data interface for a high speed communication link in a video-graphics display window environment Patent #: 4949169 InventorsAssigneeApplicationNo. 455567 filed on 12/22/1989US Classes:348/472, Pulse code modulation348/484, Sound signal709/219, Accessing a remote server709/251, RING COMPUTER NETWORKING725/92, Mass storage725/145, Data storage or retrieval725/148, Transmission network725/151Receiver (e.g., set-top box)ExaminersPrimary: Richardson, Robert L.Attorney, Agent or FirmInternational ClassH04N 007/00AbstractThe invention is a data pipeline system which synchronizes the display of digitzed audio and video data regardless of the speed at which the data was recorded on its linear medium. To do this, the video data is played at a constant speed, synchronized by the audio speed. Further, the invention uses a method of "staging" data in storage buffers, i.e., ring buffers, which encourages efficient use of the viewer module resources by not permitting the viewer to read excessive amounts of data at any one time, i.e., to read only enough data into any one ring buffer so that the amount of data in the ring buffer is roughly equivalent to the amount of data in the other ring buffers and yet permitting the viewer to read large enough chunks of data to promote efficient use of the fill system. | |
