ATM ADAPTATION LAYER RECEIVER FOR FIXED BIT RATE IMAGE SERVICE

摘要

an input/output signal generator driven by a system clock supplied from a network and for receiving a buffer state signal and a managing signal; an SAR header checking means for receiving an input/output control signal from the input/output signal generator and receiving an SAR-PDU transmitted from an asynchronous transfer mode layer to check whether an SAR header is normal; a video information compensating means connected to the SAR header checking means, for receiving the input/output signal from the input/output signal generator to output an acknowledging bit signal and for compensating abnormal SAR-PDU ; a convergence part layer restoring means for receiving an effective SAR-PDU payload from the video information compensating means to output data and a restoring clock, to thereby restore CS-PDU; a clock restoring means for receiving the acknowledging bit from the video information restoring means and a network driving clock from the exterior and for supplying the restoring clock to the convergence part layer restoring means; a video codec connecting means for performing impendence matching and line encoding upon the application of the data and clock to a video codec; and a managing/state signal processor for communicating a managing/state signal in a transmitting part to an external controller.