Transmission apparatus, communications system, and information transmission method

A transmission apparatus according for transmitting data generated by an information source to a transmission path in units of frames including a plurality of blocks, comprising:

• transmission circuitry configured to stop the transmission of data to the transmission path or to transmit toggle data to the transmission path in a first block of the plurality of blocks in a corresponding one of the frames where an amount of data to be transmitted is less than a transmission capacity of the transmission path, the toggle data having a cycle of transition of data that is longer than that of data in a second block of the plurality of blocks, wherein
• the transmission circuitry includes a scrambler that generates scrambled data obtained by scrambling data generated by the information source,
• the scrambler includes
• a shift register including a plurality of registers that sequentially shifts serial data corresponding to data generated by the information source, and
• a logical arithmetic unit that generates the scrambled data by a predetermined logical operation between the data shifted by the shift register and the serial data to be input to the shift register, and
• the transmission circuitry causes data to be transmitted to the transmission path to transit at a cycle corresponding to the number of stages of the plurality of registers in the shift register.

A communications system, comprising:

• a master apparatus;
• and
• a slave apparatus that transmits data generated by an information source to the master apparatus via a transmission path in units of frames including a plurality of blocks in accordance with an instruction from the master apparatus,
• the slave apparatus including transmission circuitry configured to stop the transmission of data to the transmission path or transmits toggle data to the transmission path in a first block of the plurality of blocks in a corresponding one of the frames, where an amount of data generated by the information source is less than a transmission capacity of the transmission path, the toggle data having a cycle of transition of data that is longer than that of data in a second block of the plurality of blocks, wherein
• the transmission circuitry includes a pseudo-random number device that generates a pseudo-random number signal, and a scrambler that generates the toggle data on a basis of the pseudo-random number signal.

A data transmission method of transmitting data generated by an information source to a transmission path in units of frames including a plurality of blocks, the method comprising:

• stopping the transmission of data to the transmission path or transmitting toggle data to the transmission path in a first block of the plurality of blocks corresponding to one of the frames, where an amount of data generated by the information source is less than a transmission capacity of the transmission path, the toggle data having a cycle of transition of data that is longer than that of data in a second block of the plurality of blocks;
• generating, by a pseudo-random number device, a pseudo-random number signal;
• and
• generating, by a scrambler, the toggle data on a basis of the pseudo-random number signal.