US 11,758,287 B2
Method for filtering noise of lens operation and video recording system
Ming Kang Chuang, New Taipei (TW); Chi-Fa Hsu, New Taipei (TW); Cheng-Mou Tsai, New Taipei (TW); and Hsuan-Yuan Huang, New Taipei (TW)
Assigned to AVER INFORMATION INC., New Taipei (TW)
Filed by AVER INFORMATION INC., New Taipei (TW)
Filed on Mar. 3, 2022, as Appl. No. 17/686,234.
Claims priority of application No. 110107424 (TW), filed on Mar. 3, 2021.
Prior Publication US 2022/0286583 A1, Sep. 8, 2022
Int. Cl. H04N 23/81 (2023.01); H04N 5/926 (2006.01)
CPC H04N 23/811 (2023.01) [H04N 5/9265 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method for filtering noise of lens operation applicable to a controller and a video recorder comprising:
establishing, by the controller, a connection between the controller and the video recorder;
receiving, by the video recorder, a recording instruction configured to control the video recorder to perform a video recording and control a microphone of the video recorder to generate an audio recording signal;
controlling, by the controller, the video recorder to enter an audio monitor mode after the video recorder performs the video recording;
in the audio monitor mode, determining, by the video recorder, whether the video recorder receives a lens operation instruction, and sending, by the video recorder, a notification signal when the video recorder receives the lens operation instruction, wherein the lens operation instruction is configured to control a lens of the video recorder to perform an operation;
after receiving the notification signal by the controller, reading, by the controller, an inverted noise signal associated with the operation and sending, by the controller, a permission signal to the video recorder; and
after receiving the permission signal by the video recorder, performing, by the video recorder, the operation according to the lens operation instruction and receiving, by the controller, the audio recording signal.