公开(公告)号：US20210211571A1

公开(公告)日：2021-07-08

申请号：US17056815

申请日：2019-05-24

Applicant: Hanwha Techwin Co., Ltd.

Inventor： Dong Jin PARK ,  Dae Bong KIM ,  Young Sang KWON ,  Ki Bum PARK ,  Joon Chan PARK ,  Young Sub KIM

IPC: H04N5/232 ,  G01S17/08 ,  G01S17/88

Abstract: A monitoring system includes a camera module that photographs a subject, a laser distance sensor that senses a distance to the subject, the laser distance sensor being arranged in a line with the camera module, and a processor that acquires a first angle and a first sensing value of the laser distance sensor in response to an event, calculates a first distance between the camera module and the subject by using the first angle and the first sensing value, calculates a second angle by using the first distance, a laser angle of view of the laser distance sensor, and a laser angle of view length of the laser distance sensor, rotates the laser distance sensor up to the second angle when a difference between the first angle and the second angle exceeds a predetermined range, acquires a second sensing value of the laser distance sensor, and operates the camera module based on the first sensing value or the second sensing value.

公开(公告)号：US20180342137A1

公开(公告)日：2018-11-29

申请号：US16037859

申请日：2018-07-17

Applicant: Hanwha Techwin Co., Ltd.

Inventor： Sang Wook LEE ,  Jae Woon Byun ,  Dae Bong KIM ,  Ku Hyeon JEONG

IPC: G08B13/196 ,  G06T7/13 ,  H04N7/18 ,  H04N5/232

Abstract: A method of controlling panning of a surveillance camera configured to perform panning over a set angle during a preset mode includes: obtaining an edge value with respect to each pixel of an object captured image of a panning-completed time, the edge value being a difference between brightness of a left adjacent pixel thereof and brightness of a right adjacent pixel thereof; obtaining an object vertical-line number among vertical pixel lines of the object captured image, the object vertical-line number being a number of a vertical pixel line in which a sum of the edge values is largest; and correcting the panning such that the object vertical-line number coincides with a reference vertical-line number corresponding to the panning over the set angle.

公开(公告)号：US20200026025A1

公开(公告)日：2020-01-23

申请号：US16496238

申请日：2017-06-28

Applicant: HANWHA TECHWIN CO., LTD.

Inventor： Dae Bong KIM ,  Young Sang KWON ,  Jae Goo LEE ,  Young Mi KIM ,  Hee Joong HAN

IPC: G02B7/10

Abstract: Provided is an optical device including an optics including at least two moving groups that are movable along an optical axis and share portions of driving regions; a plurality of actuators configured to move the at least two moving groups along the optical axis, respectively; and a control unit configured to control the positions of the at least two moving groups by operating the actuators, wherein the control unit moves the at least two moving groups independently, such that the position coordinates of the at least two moving groups in one integrated coordinates system do not coincide with each other.

公开(公告)号：US20200092485A1

公开(公告)日：2020-03-19

申请号：US16493055

申请日：2017-06-27

Applicant: HANWHA TECHWIN CO., LTD.

Inventor： Dae Bong KIM ,  Young Sang KWON ,  Ki Bum PARK

IPC: H04N5/232

Abstract: A zoom tracking method performed by a control unit of a zoom camera includes operations (a) through (c). In operation (a), the control unit determines a focusing progress state at a time when a zooming start signal is received. In operation (b), the control unit narrows an estimated range of a subject distance or estimates the subject distance, according to the focusing progress state. In operation (c), the control unit performs focusing for a zoom magnification according to the narrowed estimated range or the estimated subject distance.

公开(公告)号：US20190182425A1

公开(公告)日：2019-06-13

申请号：US15933270

申请日：2018-03-22

Applicant: HANWHA TECHWIN CO., LTD.

Inventor： Dae Bong KIM ,  Cheol Ho Kim ,  Young Mi Kim ,  Sang Hyun Cho ,  Jong In Park

IPC: H04N5/232

CPC classification number: H04N5/23258 ,  G08B13/1963 ,  G08B29/24 ,  H04N5/23267 ,  H04N5/23287

Abstract: A method of rotating a surveillance camera having an acceleration sensor and being controllable by a processor to maintain a tilt-angle to conform to a command tilt-angle, includes the steps of moving the surveillance camera tilt to a predetermined command tilt-angle in response to a signal from the processor; periodically calculating estimated tilt-angles by using acceleration values in at least one axis of an acceleration sensor; calculating a difference value between an estimated tilt-angle of a current period and an estimated tilt-angle of a previous period; and when the difference value between the estimated tilt-angles exceeds a set limit, moving the camera to another position to correct the tilt angle according to the difference calculate.