Intercom Station MMS and VoLTE Latency Reduction
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Solution Overview
Problem
Existing intercom systems suffer from time lag in two-way communication, particularly when using video streaming, leading to delayed verification of visitors, and are costly due to reliance on dedicated software and cloud servers.
Innovation Solution
An intercom system with a first station for receiving multimedia messages and two-way voice communication, and a second station equipped with a camera that takes a picture and simultaneously attempts a voice call, using MMS and VoLTE for fast communication, eliminating the need for third-party apps and reducing latency by using SRAM and SDRAM for quick image processing and transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If live video streaming is used for visitor verification, then visual authentication capability is improved, but communication time lag increases
Solution Approach 1:
The patent segments the video stream into individual still images and transmits them separately via MMS. This allows the recipient to view a sequence of images that collectively provide visual authentication, while avoiding the time lag associated with continuous video streaming. The segmentation transforms a real-time streaming requirement into a batch transmission approach that is faster and more reliable.
2Reliability
If dedicated application software and cloud servers are used, then communication reliability is improved, but system cost increases
Solution Approach 1:
The patent enables intercom stations to communicate directly with each other using standard MMS and voice call functionalities that are already built into mobile devices. This self-service approach eliminates the need for dedicated application software and cloud peer-to-peer servers, thereby maintaining communication reliability through existing infrastructure while significantly reducing system cost and complexity.
3Measurement precision
If image processing and transmission are performed sequentially, then processing accuracy is improved, but communication speed decreases
Solution Approach 1:
The patent implements preliminary action by capturing and buffering multiple still images in advance before transmission. The camera takes a sequence of images and stores them in memory, then transmits the buffered images via MMS without waiting for individual processing cycles. This approach maintains processing accuracy while significantly improving communication speed, reducing the overall interaction time to under 10 seconds.
Data Source
AI summary
A second intercom station when activated activates camera means to take a picture of a user and sends the picture to a first intercom station in an MMS and automatically and substantially simultaneously attempts to connect via a voice call to the first intercom station. The first intercom station displays the picture and substantially simultaneously receives the voice call connection attempt from the second intercom station when the MMS is received. The first intercom station comprises means to reject or accept the voice call. If the voice call is accepted then two-way voice communication between the first and second station is enabled, and if the voice call is rejected then two-way voice communication between the first and second station is not enabled.