Patent ID: 8312192

Claim:
An information transmission system comprising: a transmission path that transmits information in serial; a first information transmission device including, a transmitting section that transmits the information in the transmission path at a predetermined transmission speed, and a controller that controls the transmitting section to transmit predetermined first information in the transmission path when establishing communication, the first information including a same value in successive plurality of bits; and a second information transmission device including, a receiving section that receives the information transmitted via the transmission path, and a communication establishing section that establishes the communication based on the first information, when the receiving section receives the first information, wherein the controller, after transmission of the first information, controls the transmitting section to transmit second information including a portion where value of each bit changes per bit, and the second information transmission device further includes: a test section that tests a transmission quality based on the second information received at the receiving section, a reception waveform shaping section that shapes a signal waveform of the information received by the receiving section in accordance with setting information, and a setting section that sets the setting information based on a test result to achieve communicable transmission quality.