Patent ID: 7969793

Claim:
A digital camera for performing register configuration for a register group including a control register for controlling at least one of an image display device and an image pickup apparatus, comprising: a first selection section that receives register configuration value information comprising a register configuration value and address information, selects a transmission destination to which the register configuration value is to be sent, from a plurality of first transmission destinations based on the address information, and sends the register configuration value to the selected destination; at least one temporary storage section that temporarily stores the register configuration value sent from said first selection section, and reads out and outputs the register configuration value in predetermined timing included in at least one of a non-display period during which an image scanning line is not positioned on an effective display screen of the image display device and a blanking period during which no effective video signal is output from an image pickup element of a image pickup apparatus, said temporary storage section being one of the first transmission destinations; and a second selection section that selects one of the register configuration value sent from said first selection section and the register configuration value output from said temporary storage section, according to a predetermined priority, and outputs the selected register configuration value, said second selection section being another of the first transmission destinations.