Patent ID: 8767077

Claim:
A camera apparatus which includes a random trigger function of controlling exposure timing of an image sensor, based on timestamp information that is included in a software trigger packet received through an IEEE 1394 bus, comprising: a cycle timer operation circuit which outputs a cycle timer value that is synchronized with operation of the IEEE 1394 bus; an IEEE 1394 packet reception circuit which receives a packet on the IEEE 1394 bus; a software trigger packet detection circuit which detects the software trigger packet from a code in an originally provided area of the packet received by the IEEE 1394 packet reception circuit; a fixed delay setting circuit which outputs a fixed delay value to perform a fixed trigger delay for the timestamp information included in the originally provided area of the software trigger packet that is detected by the software trigger detection circuit; and an exposure control circuit which starts exposure to the image sensor when the cycle timer value, the timestamp information and the fixed delay value are received and when the cycle timer value exceeds a value which is an addition of the fixed delay value and the timestamp information.