Visual inter-conversation device, visual inter-conversation system and visual inter-conversation signal transmission method
A technology of intercom equipment and signal transmission, applied in the system and its visual intercom signal transmission, and in the field of visual intercom equipment, can solve problems such as complicated installation, achieve the effects of saving material costs, improving complex installation, and reducing wiring
Active Publication Date: 2012-11-07
深圳康佳控股集团有限公司
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a visual intercom device, a system and method
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0027] see figure 1 , is a block diagram of a video intercom system in a preferred embodiment of the present invention. Such as figure 1 As shown, the video intercom system provided in this embodiment is illustrated by taking the building video intercom system as an example, and includes at least two video intercom devices, such as the door video intercom device 100 and the indoor video intercom The device 200, wherein the video intercom device 100 at the door can be installed at the access control of the building as a door phone, and the indoor video intercom device 110 can be installed in the user's room as an indoor unit to communicate with the video intercom device 100 at the door. In addition, the video intercom system may also include a man...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a visual inter-conversation device, a visual inter-conversation system and a visual inter-conversation signal transmission method. The visual inter-conversation device is provided with a dual-tone transceiver, a radio-frequency modulator and / or a radio-frequency demodulator and a transmission line, wherein the dual-tone transceiver is used for converting inter-conversation control commands into dual-tone signals for output and converting the received dual-tone signals into inter-conversation control commands; the radio-frequency modulator and / or the radio-frequency demodulator is used for modulating acquired video signals into radio-frequency signals in a radio-frequency region for output, and / or demodulating the received radio-frequency signals in the radio-frequency region into video signals for playing; and the transmission line is used for transmitting superposed signals of tone signals, the dual-tone signals and the radio-frequency signals and power signals. The visual inter-conversation device, the visual inter-conversation system and the visual inter-conversation signal transmission method have the advantages that the tone signals, control signals and the video signals are allocated in different frequency bands, and the signals originally needing to be transmitted by multiple wires are transmitted by two wires by the aid of a filtering method, so that the defects of mounting complexity, difficulty in maintenance of an existing visual inter-conversation system and the like are improved, and a great quantity of material cost is saved.
Description
technical field [0001] The invention relates to electronic equipment used for communication, and more specifically, to a video intercom device, a system and a video intercom signal transmission method thereof. Background technique [0002] With the improvement of living standards and the strengthening of the awareness of safety precautions, the housing construction in the community has unified anti-theft doors, but the anti-theft doors bring inconvenience to visitors, so the building video intercom system came into being. The visitor and the owner talk directly and unlock the anti-theft door lock for the visitor. [0003] The existing building video intercom system that can be networked is still in the multi-line state. The wiring from the VTO to the indoor unit generally requires: 2 audio cables, 1 ground wire, 1 power cable, 2 RS485 buses, and 1 video coaxial cable. It can be seen that the traditional method requires at least 7 wires, which is not only complicated to ins...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H04Q5/24H04N7/14
Inventor 邹楠
Owner 深圳康佳控股集团有限公司