| 摘要 |
A coded transmission system wherein each bit of transmitted data having a logical value is coded depending on a coded result of a preceding bit, containing a sender-side apparatus, a transmission line, and a receiver-side apparatus. The transmission line connects the sender-side apparatus with the receiverside apparatus. In the sender-side apparatus, a resetting bit and a message are generated; a code of a bit which is last transmitted and is necessary to code a bit which is to be transmitted next, is memorized in a first preceding code memorizing circuit, where the content of said first preceding code memorizing circuit is reset to an initial code responding to the resetting bit. A coding circuit receives the resetting bit and the message, coding each bit of the message in accordance with a predetermined coding rule and the content of the first preceding code memorizing circuit, and coding the resetting bit to a predetermined resetting code which is different from the codes used in the coding of the message. In the receiver-side apparatus, a code of a bit which is last received and is necessary to decode a code of a bit which is received next, is memorized in a second preceding code memorizing circuit. A resetting circuit resets a content of the second preceding code memorizing circuit to a predetermined initial code when receiving the resetting code. A decoding circuit decodes received codes corresponding to the message in accordance with the above predetermined rule and the content of the second preceding code memorizing circuit.
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