Video and audio multiplex transmission system
Patent 5231492 Issued on July 27, 1993. Estimated Expiration Date: 
November 16, 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.
November 16, 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 ReferencesTime division multiplexed transmission systems for telephone or like signals with frequency band compression Duplex speech transmission method and a system therefor Apparatus and method for receiving audio signals transmitted as part of a television video signal Coding transmission equipment for carrying out coding with adaptive quantization Patent #: 4831636 InventorsApplicationNo. 613546 filed on 11/16/1990US Classes:348/14.12, Transmission control (e.g., resolution or quality)348/14.1, Motion image conferencing348/484, Sound signal370/522, Signaling (ancillary to main information)370/537, Multiplexing plural input channels to a common output channel375/240.23Variable length codingExaminersPrimary: Groody, James J.Assistant: Metjahic, Safet Attorney, Agent or FirmForeign Patent References
International ClassesH04N 007/04H04N 007/14 Foreign Application Priority Data1989-03-16 JPAbstractA system is disclosed for multiplexing, transmitting, and receiving picture data and sound data, wherein the picture data and sound data are balanced in a limited transmission capacity so as to obtain a better overall quality to effectively use the transmission ability of a medium. The content of at least one of the picture data and sound data are detected and used for control of the content of the transmission. The content of the transmission is controlled by changing data and sound to correct a difference between the processing speed of the picture data and the sound data, thereby improving the quality of a video conference system or the like where the transmission capacity is insufficient. | |
