Intercom Method Masking Line Seizure for Privacy
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Solution Overview
Problem
Current intercom systems require residents to take the line to receive visitor images, immediately initiating videoconference and making it difficult for residents to hang up without communicating, as the visitor is informed of their presence.
Innovation Solution
The intercom method masks line seizure by residents until they decide to activate videoconference, allowing them to hang up without the visitor being aware, and includes features like transmission of presentation messages, acknowledgment of unlocking commands, and message recording for hearing-impaired support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the resident takes the line to receive visitor images, then the resident can observe the visitor, but the visitor is informed of the resident's presence making it difficult to hang up without communicating
Solution Approach 1:
The system performs preliminary action by establishing the audio channel and transmitting visitor images to the resident's handset before the resident actually takes the line. This allows the resident to observe and listen to the visitor in advance, and only if the resident chooses to speak will the videoconference be activated and the visitor informed of the resident's presence. This resolves the contradiction by enabling privacy-protected observation while maintaining simple operation.
2Ease of operation
If videoconference is immediately activated when resident takes the line, then communication is established, but the visitor can detect resident presence making anonymous hanging up difficult
Solution Approach 1:
The system activates the audio channel and transmits images to the resident's handset in advance, before the resident takes the line. The videoconference is only activated when the resident actually speaks. This preliminary activation of the audio channel allows the resident to remain anonymous initially while still receiving and observing visitor images, resolving the contradiction between easy communication establishment and preserving resident anonymity.
3Ease of manufacture
If the system uses public telecommunications network, then installation is simplified, but line seizure behavior must be modified to mask resident presence
Solution Approach 1:
The system performs preliminary action by establishing the audio channel and transmitting images before the resident takes the line. The line seizure is masked by delaying the visual indication to the visitor until the resident actually speaks. This maintains the simplicity of using the public telecommunications network while adding the necessary control mechanism to mask resident presence, resolving the contradiction between installation simplicity and device complexity.
Data Source
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AI summary
The method involves inhibiting introduction of all information permitting a visitor to know that a selected resident has a tap unit, using a man-machine interface. Images of the visitor are transmitted using a wireless public telecommunication network e.g. universal mobile telecommunication system (UTMS). The images are displayed on a handset of the resident. Stopping of inhibition and triggering of videoconference are transmitted between the visitor and the resident by the public network in response to an activation command of the videoconference. Independent claims are also included for the following: (1) an information storage medium comprising instructions for implementing an interphony method (2) an electrical door opener of a residence.