Title:
VISUAL INTERCOM APPARATUS FOR MAIN ACCESS DOOR OF LIFE CABIN
Document Type and Number:
WIPO Patent Application WO/2023/159728
Kind Code:
A1
Abstract:
The present invention relates to the technical field of communications, and provides a visual intercom apparatus for a main access door of a life cabin, comprising an audio module and a video module, wherein the video module uses a digital video recorder to access an external CCD camera to a network input port of a network switch, and an analog video output interface of the digital video recorder is connected to an LED display interface, and the camera is provided on a camera window of a life cabin body to obtain an internal image. According to the present invention, a channel signal inside the cabin is a transmitting-end pickup signal, a channel signal outside the cabin is a receiving-end playback signal, and network audio transmission can be realized between two networked switchers. The amplitude of the input signal is close to that of the output signal, the noise is relatively small, distortion is avoided, and the system requirement is satisfied; and network video transmission can be smoothly performed between the two networked switchers, the display resolution is 640*480, the frame rate is 25 frames per second, the definition is good, and the display delay is relatively small.
Inventors:
GAO QING (CN)
LIU YAOJIAN (CN)
LIU YAOJIAN (CN)
Application Number:
PCT/CN2022/087282
Publication Date:
August 31, 2023
Filing Date:
April 18, 2022
Export Citation:
Assignee:
ANKANGTAI YANTAI INST OF LIFE SCIENCES CO LTD (CN)
International Classes:
H04N7/18; A61G10/02
Foreign References:
| CN200948209Y | 2007-09-19 | |||
| CN101110950A | 2008-01-23 | |||
| CN203574789U | 2014-04-30 | |||
| CN108888444A | 2018-11-27 | |||
| CN205758888U | 2016-12-07 | |||
| JP2011143223A | 2011-07-28 |
Attorney, Agent or Firm:
BEIJING WITAL PATENT AGENCY CO., LTD (CN)
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