Patent ID: 7821573

Claim:
A time setting system, comprising: an imaging device including, record and reproduction means for recording video data onto a record medium and reproducing video data therefrom, clock means for outputting first time information, and a first communication interface that communicates with another device according to a predetermined protocol, wherein the imaging device exchanges video data with the other device through the first communication interface; and a video-device including, reference time information obtainment means for automatically obtaining second time information as reference information from the outside of the video-device, video signal processing means for processing a video signal, and a second communication interface that communicates with the other device according to the predetermined protocol, wherein the video-device exchanges video data with the other device through the second communication interface, wherein when the imaging device and the video-device are connected through the first and second communication interfaces, the video-device transmits the second time information obtained by the reference time information obtainment means to the imaging device and the imaging device sets a time for the clock means based on the received second time information, wherein the imaging device stores third time information that indicates a time that has been set for the clock means based on the second time information in storage means, and wherein the imaging device compares the third time information stored in the storage means with the first time information that has been outputted from the clock means and that indicates a current time and when the compared result indicates that a difference between the third time information stored in the storage means and the first time information indicating the current time exceeds a predetermined time, the imaging device prompts the user to set a time for the clock means.