Patent ID: 11949959
Assignee: SONY GROUP CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 6:
7. A control information transmission method for a cable that includes
a current consumption unit that is connected between first electronic equipment and second electronic equipment and receives supply of current from the first electronic equipment through a power supply line,
a current monitor unit includes a variable current consumption circuit that receives supply of current from the first electronic equipment through the power supply line, and
the control information transmission method comprising:
observing a current amount the first electronic equipment is capable of supplying to the power supply line to transmit control information according to the observed current amount to the first electronic equipment, and
observing maximum current that flows through the power supply line based on a current consumption amount in the variable current consumption circuit, wherein the current consumption amount is sequentially changed from a small amount to a great amount, as the current amount the first electronic equipment is capable of supplying to the power supply line.