Moving picture signal transmission system

Claim 1

A moving picture signal transmission system, comprising: a transmitter; and a receiver, wherein said transmitter comprises, an encoding means (8) for encoding a picture signal through intra-frame encoding for a picture signal immediately after receiving an error message from a receiver, and through inter-frame encoding for other picture signals, a ROM (7) for storing predetermined identification headers (A,B,C) for a first transmission frame, a middle transmission frame, and a last transmission frame, respectively, a buffer (1) coupled with an output of said encoding means (8) for storing an encoded picture signal, a selector (5) for transmitting either an output of said buffer (1) or an output of said ROM (7), a counter means (6) coupled with an output of said buffer (1) for counting moving picture frame signal (a) and inserting said identification headers (A,B,C) in a transmission signal for every fixed frame length of a picture signal by switching said selector (5), and wherein said receiver comprises, a buffer (11) for storing received picture signal, a shift register (12) for storing received identification header (A,B,C), a ROM (10) for storing predetermined identification headers (A,B,C), a pattern comparator means (13) for comparing received identification headers in said shaft register (12) with predetermined identification headers in said ROM (10), a sequence circuit means (14) coupled with output of said pattern comparator (13) for checking validity of state transition of received identification headers, said sequence circuit (14) having a pass output of said buffer (11) as a received picture signal when no error in validity check is detected, and having a stop output of said buffer (11) and forwarding an error signal to a transmitter when an error is detected in said validity check.