| 摘要 |
PURPOSE:To stabilize and secure decoding operations by providing a specific level to a status bit included in each frame of multiframe which is exchanged between an encoder and decoder and synchronizing decoding operations. CONSTITUTION:A signal transmitted from the encoder to the decoder is constituted of a synchronizing bit F and the multiframe consisting of a data D and the frames made of status bits S. A frame generator circuit 1 on the encoding side provides the specific level to the status bit S. On the reception side a frame synchronizing circuit 2 acquires the frame synchronization of reception signals, simultaneously takes the status bits out of the frames and supplies them to a status bit counting circuit 3. The circuit 3 counts status bits at the specific level, supplies a signal to a decoder circuit 4 when it detects the preset number of status bits at the specific level, and causes a decoder circuit 4 to decode the next and subsequent multiframes. |
