Patent ID: 11871490
Assignee: ROHM CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC B  H

Claim 5:
6. The lighting control device according to claim 5, wherein
the up/down counter is configured such that
after the start of the lighting period until the current state signal turns from the first state to the second state, synchronously with a predetermined clock signal, the up/down counter changes a count value, starting at a predetermined initial value, in a first direction and then,
after the timing of the transition from the lighting period to the extinction period in the raw control signal until the count value returns to the initial value, the up/down counter changes, synchronously with the clock signal, the count value in a second direction opposite to the first direction,

the first measurement process is achieved by the count value being changed in the first direction and the second measurement process is achieved by the count value being changed in the second direction, and
the control signal corrector is configured to switch the period specified by the corrected control signal from the lighting period to the extinction period when the count value has returned to the initial value in the second measurement process.