Video tape recorder is expanded structure and the method for multihead displayTechnical field
The present invention relates to the technical field of video monitoring, is a kind of structure and the method that can expand multihead display on the video tape recorder that synchronization exports different video pictures specifically.
Background technology
The video tape recorder used in usual monitoring comprises embedded digital video recorder (DVR), embedded NVR and embedded mixed type DVR.
Wherein embedded digital video recorder (DVR), i.e. DVR are a kind of can its vision signal of analog acquisition such as connecting analog video camera, ball machine carrying out local exporting echo and Video coding this locality stores, network real-time video is propagated embedded type network video equipment.
Embedded NVR, i.e. Network Personal Video Recorder, that one can connect and net control IPC (web camera) front end, the video data transmitted by IPC carries out this locality and stores and forwarded, and decoding shows the equipment of the real time video signals that IPC gathers on the output interface of NVR equipment.
Embedded mixed type DVR is the built-in hard disk video tape recorder equipment of embedded digital video recorder (DVR) and NVR function entirety.
Existing embedded digital video recorder (DVR), embedded NVR and embedded mixed type DVR cannot accomplish to export identical or different real time video data simultaneously, thus cannot meet in actual monitored application the needs that multihead display or multi-screen export.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of structure and the method that can expand multihead display on the video tape recorder that synchronization exports different video pictures.
The technical scheme that the present invention takes for the technical problem existed in solution known technology is:
Video tape recorder of the present invention is expanded the structure of multihead display, comprise: video tape recorder, display device and video signal cable, the video input mouth of above-mentioned display device is connected with the video output on video tape recorder by video signal cable, video tape recorder is provided with multiple video output simultaneously, have at least two to arrange in real time in above-mentioned video output, export different vision signals simultaneously.
The present invention can also adopt following technical measures:
Each described video output is HDMI, one of USB interface or CVBS interface.
Each described video output is all connected with a display, there is multiple video input mouth and the display device that is connected with different video delivery outlet on video tape recorder respectively as multiple display.
Described video tape recorder arranges USB interface, and connects keyboard and mouse by USB data line.
Described each video output exports different or identical video information or user operation menu simultaneously.
In described different video output, one of them exports playing back videos vision signal, and other video outputs export real time video signals.
In described different video output, one of them exports electronic map information, and other video outputs export real time video signals.
Video tape recorder of the present invention is expanded the method for multihead display, comprising:
A, multiple video output is set on video tape recorder simultaneously, in above-mentioned video output, has at least two to arrange in real time, to export different vision signals simultaneously;
B, above-mentioned all video outputs to be divided into groups, if the output content of certain several video output is all consistent at any time, then these video outputs are designated as one group, and output content is designated as separately one group at the video output that equipment run duration is different;
C, by each group video output be defined as an independently VODEV, each VODEV independently arranges video preview pattern and preview strategy; Preview mode content comprise video output over the display with the mode of a few picture carry out separation display multichannel vision signal, preview strategy content comprise video output interface over the display picture cruise switch the time interval; The preview mode of each VODEV setting with preview policy store at device interior, as initial preview mode during equipment startup next time and preview strategy;
D, each VODEV connect preview mode according to its setting and preview strategy, rely on the fan-out capability of video output, each group of its video output export corresponding real time video data or carries out preview to cruise switching;
E, user interface initial launch and display correspond to video output group corresponding to certain VODEV, the parameter that this video output group is arranged by user and determining, user passes through USB mouse and the keyboard of access device, controls the video output signals of this video output group; In operating process, except the preview mode being significantly provided with other video output interface groups by custom menu or preview strategy, the vision signal that other video output groups export is unaffected;
The menu providing video output to switch in F, user interface, user interface is moved to video output next time by this menu of the logical operation of user, display operation menu on its corresponding display connected, the video output signals that independent this video output group of control is corresponding.
The advantage that the present invention has and good effect are:
Video tape recorder of the present invention is expanded the structure of multihead display, video tape recorder is provided with multiple video output simultaneously, each video output exports different vision signals simultaneously, to meet different monitoring demands, as: two monitor staff respectively monitor a display device, first display device shows former roads video scene, second display device display Hou Ji road video scene.Method video tape recorder of the present invention being expanded multihead display can carry out comprising the feature operation of playing back videos on a display, and another display can not be subject to user interface hide and do not hinder the real-time monitoring of video by duplex display real-time video information.In addition, graphical interface of user can move on different video delivery outlet according to user operation, for user provides the mode of operation of the instant vision signal controlled on different output interface.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of structure video tape recorder of the present invention being expanded multihead display.
Embodiment
Referring to drawings and Examples, the present invention will be described in detail.
Fig. 1 is the schematic diagram of structure video tape recorder of the present invention being expanded multihead display.
As shown in Figure 1, video tape recorder of the present invention is expanded the structure of multihead display, comprise: video tape recorder, display device and video signal cable, the video input mouth of above-mentioned display device is connected with the video output on video tape recorder by video signal cable, video tape recorder is provided with multiple video output simultaneously, have at least two to arrange in real time in above-mentioned video output, export different vision signals simultaneously.
Each video output is HDMI, one of USB interface or CVBS interface.
Each video output is all connected with a display, there is multiple video input mouth and the display device that is connected with different video delivery outlet on video tape recorder respectively as multiple display.
Video tape recorder arranges USB interface, and connects keyboard and mouse, to be supplied to the hardware interface of user operation equipment by USB data line.Embedded device can provide multiple usb interface, and mouse, keyboard can independently access, and also can access simultaneously, also can not access.
Each video output exports different or identical video information or user operation menu simultaneously.
In different video outputs, one of them exports playing back videos vision signal, and other video outputs export real time video signals.
In different video outputs, one of them exports electronic map information, and other video outputs export real time video signals.
Graphical interfaces on embedded digital video recorder (DVR), embedded NVR and embedded mixed type DVR can in two or more switching displays of these different video output interfaces.
In Fig. 1, video tape recorder can be embedded digital video recorder (DVR), embedded NVR and embedded mixed type DVR.This equipment provides video output 1, video output 2 to video output n many video outputs, and the standard of these video outputs can be HDMI, VGA, CVBS, and the standard of different video delivery outlet can be the same or different.Each video output interface is connected with display by adaptive video signal cable, and these displays can be monitor, VGA display, HDMI display and can the television set of a compatible equipment outputting video signal.Each video output is connected with a display, in some cases, certain video output also may not connect any display.The video content that all video outputs export, has at least two can arrange in real time, and can export different vision signals at synchronization simultaneously.A so-called display concept in the present invention, not corresponding display device entity, and refer to a video input interface in a display device, as current portions LCD display provides VGA, HDMI two video input interfaces simultaneously, then in the application, can think and can provide two displays by display device.
Video tape recorder of the present invention is expanded the method for multihead display, comprising:
A, multiple video output is set on video tape recorder simultaneously, in above-mentioned video output, has at least two to arrange in real time, to export different vision signals simultaneously;
B, above-mentioned all video outputs to be divided into groups, if the output content of certain several video output is all consistent at any time, then these video outputs are designated as one group, and output content is designated as separately one group at the video output that equipment run duration is different;
C, by each group video output be defined as an independently VODEV, each VODEV independently arranges video preview pattern and preview strategy; Preview mode content comprise video output over the display with the mode of a few picture carry out separation display multichannel vision signal, preview strategy content comprise video output interface over the display picture cruise switch the time interval; The preview mode of each VODEV setting with preview policy store at device interior, as initial preview mode during equipment startup next time and preview strategy;
D, each VODEV connect preview mode according to its setting and preview strategy, rely on the fan-out capability of video output, each group of its video output export corresponding real time video data or carries out preview to cruise switching;
E, user interface initial launch and display correspond to video output group corresponding to certain VODEV, the parameter that this video output group is arranged by user and determining, user passes through USB mouse and the keyboard of access device, controls the video output signals of this video output group; In operating process, except the preview mode being significantly provided with other video output interface groups by custom menu or preview strategy, the vision signal that other video output groups export is unaffected;
The menu providing video output to switch in F, user interface, user interface is moved to video output next time by this menu of the logical operation of user, display operation menu on its corresponding display connected, the video output signals that independent this video output group of control is corresponding.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention with preferred embodiment openly as above, but, and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, certainly the technology contents of announcement can be utilized to make a little change or modification, become the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all belong in the scope of technical solution of the present invention.