Hanwha Techwin Co., Ltd.

Hanwha Aerospace Co., Ltd.

KiYong Jeon

Jimin Kim

Takwon Cho

SeokYong Yoon

A surveillance method performed by a surveillance apparatus is provided. The surveillance method includes determining whether an event has occurred based on detection data; in response to determining that the event has occurred based on the detection data, transmitting a first wireless communication to an outside of the surveillance apparatus by using a second communicator at a second frequency and switching a power-off state of a first communicator to a power-on state; and transmitting a second wireless communication, corresponding to the event, to the outside by using the first communicator at a first frequency higher than the second frequency.

Surveillance method and apparatus

A doorbell apparatus includes a camera to acquire a first image of an object in a first region and a second image of the object in a second region disposed closer to the camera than the first region; an image processing unit to detect the object in the first image and to identify the object in the second image, the image processing unit having a first image processing unit that detects and saves the first images and a second image processing unit that identifies and saves objects in the second images; a storage device to store the second image corresponding to the identified object; and an alarming unit to activate an alarm signal depending on whether the identified object corresponds to a predetermined object.

Doorbell, security system including doorbell apparatus, and method of operating the same

A method of selecting hopping target channels by a device except a wireless local area network device includes: selecting candidate channels having a received signal strength less than a set threshold signal strength from among channels included in an available frequency band; classifying the candidate channels into frequency regions based on a channel frequency of each of the candidate channels; and for each of the frequency regions, selecting at least one candidate channel included in a frequency region as a hopping target channel for the frequency region.

Growing community of inventors

Seongnam-si, South Korea

KiYong Jeon