Monitoring system

A method in a camera monitoring system that includes a plurality of cameras, a master device that wirelessly communicates with the plurality of cameras, a smartphone having a home security application that realizes a monitoring function installed therein, the smartphone being connected to a mobile telephone network to which one or more other mobile telephones are connected, and a wireless router disposed in a house, the wireless router providing a wireless local area network (LAN) that connects the master device and the smartphone, the method comprising:

• receiving, by the master device, a first plural-image data transmission request via the wireless router from the smartphone,
• in response to the receiving of the first plural-image data transmission request from the smartphone, transmitting, by the master device, a first image request to the plurality of cameras,
• in response to receiving the first image request from the master device, sending, by each of the plurality of cameras, a respective one of a plurality of images to the master device, and
• receiving, by the master device, the plurality of images from the plurality of cameras;
• forming, by the master device, a first multiple-segmented image that includes the plurality of images received from the plurality of cameras in multiple segments of the multiple-segmented image;
• transmitting, by the master device, the first multiple-segmented image via the wireless router to the smartphone for display on the smartphone such that the smartphone receives the first multiple-segmented image via the wireless LAN provided by the wireless router;
• after the transmitting of the first multiple-segmented image, receiving, by the master device, a single-image data transmission request that identifies one of the plurality of cameras, via the wireless router, from the smartphone;
• in response to the receiving of the single-image data transmission request that identifies the one of the plurality of cameras, transmitting, by the master device, a link disconnection instruction to each of the plurality of cameras other than the one of the plurality of cameras;
• forming, by the master device, a single-segment image that includes the one of the plurality of images received from the one of the plurality of cameras;
• and
• transmitting, by the master device, the single-segment image via the wireless router to the smartphone.