Image transmission system
May 11, 2008. 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 3564127 3842199 Slow scan television scan converter Multiplexed communication of voice signals and slow scan television signals over a common communication channel Video telephone Color slow scan video signal translation Method and apparatus for signaling an existing telephone communication between picture telephone apparatuses Still picture transmission apparatus Conversational video phone Color picture information transmission system InventorsAssigneeApplicationNo. 192648 filed on 05/11/1988US Classes:348/14.14, Still frame (e.g., freeze frame)348/22SLOW SCANNING TRANSMISSION (E.G., STILL FRAME)ExaminersPrimary: Ng, Jin F.Assistant: Chan, Wing F. Attorney, Agent or FirmForeign Patent References
International ClassesH04M 011/00H04N 007/14 Foreign Application Priority Data1987-05-13 JPAbstractA video phone comprising an input device for entering input image data to be transmitted, a circuit for digitizing the input image data into digital image data, a memory for storing the digital image data, a first circuit for producing an output image signal based on the digital image data from the memory, a display device for displaying an image of the output image signal, a second circuit for compressing the digital image data from the memory into compressed image data, a telephone part having telephone functions, a line control circuit coupled to a public analog telephone line for selectively coupling the second circuit and the telephone part to the public analog telephone line, and a control device. The control device controls at least the memory and the second circuit so that the compressed image data related to the input image data is read out from the memory and supplied simultaneously to the first and second circuits in an image transmitting mode and the compressed image data related to a voice frequency signal received through the public analog telephone line is stored in the memory and read out therefrom to be supplied to the first circuit in an image receiving mode.Other References
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