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公开(公告)号：US10659514B2
公开(公告)日：2020-05-19
申请号：US15938378
申请日：2018-03-28
Applicant: Netgear, Inc.
Inventor： Dennis Aldover , John Thomas , Aditya Deore , Ron Hokanson
IPC: H04L29/06 , H04N19/146 , H04N19/166
Abstract: In an electronic video monitoring system for security and surveillance, a recording device can adaptively change a bit rate at which a video stream is transmitted so that image quality is prioritized, including above maintaining a continuous real-time transmission. In this way, image quality suitable for security and surveillance can be guaranteed close to real-time, despite changes in video transmission requirements and/or network demands. In one aspect, a frame rate can be lowered to no less than a minimum frame rate, a resolution can be lowered to no less than a minimum resolution, and the frame rate and resolution can be lowered to the minimum frame rate and the minimum resolution, respectively, before allowing an increase of compression of the video stream in view of the change in video transmission requirements and/or network demands. This allows sustaining image quality suitable for security and surveillance.
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公开(公告)号：US20190306220A1
公开(公告)日：2019-10-03
申请号：US15938378
申请日：2018-03-28
Applicant: Netgear, Inc.
Inventor： Dennis Aldover , John Thomas , Aditya Deore , Ron Hokanson
IPC: H04L29/06 , H04N19/146 , H04N19/166
Abstract: In an electronic video monitoring system for security and surveillance, a recording device can adaptively change a bit rate at which a video stream is transmitted so that image quality is prioritized, including above maintaining a continuous real-time transmission. In this way, image quality suitable for security and surveillance can be guaranteed close to real-time, despite changes in video transmission requirements and/or network demands. In one aspect, a frame rate can be lowered to no less than a minimum frame rate, a resolution can be lowered to no less than a minimum resolution, and the frame rate and resolution can be lowered to the minimum frame rate and the minimum resolution, respectively, before allowing an increase of compression of the video stream in view of the change in video transmission requirements and/or network demands. This allows sustaining image quality suitable for security and surveillance.
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公开(公告)号：US20190306038A1
公开(公告)日：2019-10-03
申请号：US15938441
申请日：2018-03-28
Applicant: Netgear, Inc.
Inventor： Ron Hokanson , Chetan Karia
Abstract: In an electronic monitoring system, a base station can identify missing video and/or audio (“media”) packets from a recording device by detecting gaps between sequence numbers corresponding to media packets received in an encoded media stream. The base station can efficiently avoid individually acknowledging every media packet received from the recording device. However, when missing media packets are identified, the base station can queue non-contiguous sequence numbers for the missing media packets for requesting re-transmission from the recording device in a single message. The base station can request such re-transmission during regular report intervals providing statistics and/or control information, and/or in between such intervals in application-specific messages, subject to a guard time. If the recording device still has at least one missing media packet in an egress queue, the recording device can accordingly re-transmit the missing media packet.
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