Interphone System ID-Based Calling Architecture
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Solution Overview
Problem
Conventional multiple dwelling house interphone systems require large-scale ROM and high-performance CPU for storing and processing building and dwelling unit numbers, leading to increased costs and limitations in scalability and resource utilization.
Innovation Solution
The system allows calling by inputting the ID of the dwelling unit master device from the centralized collective entrance machine, eliminating the need for a calling table associating dwelling unit master devices with building and unit numbers, thus reducing the requirement for large-scale ROM and high-function CPU.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a centralized collective entrance machine stores dwelling unit numbers and building numbers to enable calling for any building, then calling functionality is improved, but device complexity and cost increase due to requiring large-capacity ROM and high-performance CPU
Solution Approach 1:
The patent divides the calling system into multiple segments: building collective entrance machines for each building and a centralized collective entrance machine. Each building collective entrance machine handles calling within its own building using local dwelling unit numbers, while the centralized machine coordinates between buildings. This segmentation allows each device to have smaller storage requirements instead of one machine needing to store all building and dwelling unit data.
Solution Approach 2:
The patent introduces building collective entrance machines as intermediary devices between the centralized collective entrance machine and dwelling units. When a calling request is made, the centralized machine first identifies the target building, then the building collective entrance machine (acting as intermediary) handles the final connection to the specific dwelling unit. This intermediary approach distributes the data storage burden across multiple devices.
2Adaptability or versatility
If a centralized collective entrance machine stores large amounts of building and dwelling unit data, then calling capability is improved, but cost increases due to requiring large-capacity ROM and high-performance CPU
Solution Approach 1:
The patent segments the data storage function across multiple building collective entrance machines, each storing only local dwelling unit data for its building. The centralized machine stores minimal coordination data. This segmentation reduces the cost of ROM and CPU for each individual device compared to a single machine storing all data.
Solution Approach 2:
Each building collective entrance machine independently manages its own local dwelling unit data and calling operations. The machines serve themselves by handling local calling requests without requiring the centralized machine to store and process all dwelling unit information centrally, thereby reducing overall system cost.
3Ease of operation
If building collective entrance machines use simple dwelling unit number input for calling, then ease of operation is improved, but calling capability across multiple buildings is limited
Solution Approach 1:
The patent merges the functionality of multiple building collective entrance machines with a centralized collective entrance machine. The centralized machine combines the simple dwelling unit number input interface with building identification capability, allowing users to call across buildings while maintaining operational simplicity through unified interaction.
Solution Approach 2:
The building collective entrance machines act as intermediaries that translate simple dwelling unit number inputs into multi-building calling requests. When a user inputs a dwelling unit number at the centralized machine, the system uses the intermediary building collective entrance machines to route the call to the correct building and dwelling unit, maintaining simplicity while enabling multi-building capability.
Data Source
Figure 1
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AI summary
[Object] To provide a multiple dwelling house interphone system that enables calling without storing, in a centralized collective entrance machine or a centralized controller, room numbers and building numbers to which calling destination terminals belong. [Solution] The multiple dwelling house interphone system includes a centralized collective entrance machine 1 for a visitor to call a dweller of any building, a dwelling unit master device 3 provided to each dwelling unit for a dweller to respond to a call, and a centralized controller 4 which controls communication between the centralized collective entrance machine 1 and each dwelling unit master device 3. Each dwelling unit master device 3 has an ID storage section 35 storing its own ID. When the ID of the dwelling unit master device 3 is inputted for calling the dweller, a centralized collective entrance machine control section 15 of the centralized collective entrance machine 1 first transmits an ID confirmation request signal to all the dwelling unit master devices 3 and waits for a reply from the corresponding dwelling unit master device 3, and next, transmits a call signal to the dwelling unit master device 3 that has returned a reply signal. [Selected Drawing] FIG. 2