Multimedia visual entrance guard system

Abstract

The invention relates to a multimedia visual entrance guard system, which comprises an audio collecting unit, a video collecting unit, a digital signal processor (DSP) unit, an advanced reduced instruction-set computer machine (ARM) controller, a video synthesis unit, a display unit, a human face detecting unit, a gain regulating unit, a storage unit, a keyboard input unit, a control door lock unit and a loudspeaker, wherein the audio collecting unit, the video collecting unit and the DSP unit are positioned at an outdoor part, the ARM controller, the video synthesis unit, the display unit, the human face detecting unit, the gain regulating unit, the storage unit, the keyboard input unit, the control door lock unit and the loudspeaker are positioned at an indoor part, and the indoor part and the outdoor part are connected through an Ethernet bus controlled by an Ethernet controller. The audio signal gain is dynamically regulated through judging the distances and the positions of visitors, in addition, multimedia files are played through an audio and video device of the system when no visitors exist, the user experience is improved, and meanwhile, the equipment utilization rate is also improved.

Description

technical field [0001] The invention relates to a multimedia visual access control system, which is suitable for monitoring and / or controlling the entrance of building doors or community doors in residential buildings, office buildings and private clubs. Background technique [0002] Visual access control, alias is video doorbell, English name is Videodoorphone or Videodoorbell. Introduced from developed countries in the 1990s, it has developed rapidly in China. Since the end of the 1990s, it has been mainly used in commercial residential buildings, and its scale has developed rapidly, and it has generally entered the middle and high-rise residential buildings in urban communities. When in use, the resident hears the ringtone, and accepts the call from the visitor through the host at the downstairs door to have a conversation, just like answering a videophone. At the same time, the video extension in the resident’s home can receive video images through the camera of the dow...

AI Technical Summary

Problems solved by technology

[0005] However, due to the special product features of the visual access control system, such as short use time and low frequency of use, the visual access control system does not give full play to its role when no one is visiting. This is undoubtedly a huge waste of resources and also affects Therefore, providing a multi-functional visual access control system will surely become an important research direction in the field of electronic life technology.

In addition, there are at least the following problems in the existing visual access control: 1) when a visitor stands a little far away from the visual intercom, the visitor's voice played on the resident extension is too small to be heard clearly, and When the visitor is close to the visual intercom, the sound played is too loud, which is likely to cause interference to the residents; 2) The intercom located at the door of the unit building is in a public and open environment, which is easily disturbed by environmental noise , making it difficult for residents to hear the voices of visitors; 3) For guests who visit frequently or have frequent visits for a period of time, they need the confirmation of the residents every time before they can enter. Such frequent repeated operations also bring some discomfort to the residents. necessary trouble

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