Wireless Streaming Access Control via Spatial Privilege Signals
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Solution Overview
Problem
In environments with multiple coexisting receiver devices, such as classrooms or meeting rooms, existing wireless streaming technologies like WiDi, Miracast, Apple AirPlay, and Google Cast lack effective access control, leading to risks of sensitive content exposure and unauthorized interruptions during presentations.
Innovation Solution
A method that wirelessly connects receiver devices to sender devices within a specific spatial region, transmitting privilege signals to grant privileged status to sender devices located within that region, allowing them to control access and streaming data while excluding unprivileged devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If access control is implemented using PIN codes at the receiver device, then security against unauthorized access is improved, but the PIN code can be easily acquired by anyone seeing the display, reducing security effectiveness
Solution Approach 1:
The patent introduces a wireless signal intermediary that transmits privileged sender device identification information from the receiver device to authorized sender devices. This intermediary mechanism replaces the vulnerable PIN code display approach with a wireless communication channel that can selectively deliver credentials only to devices within authorized spatial regions, thereby maintaining security while eliminating the visibility problem.
2Ease of operation
If all sender devices are treated equally without privilege differentiation, then ease of operation is improved, but unauthorized devices can interrupt ongoing presentations, reducing reliability
Solution Approach 1:
The patent applies local quality by differentiating sender devices based on their spatial location relative to the receiver device. Sender devices within a defined spatial region receive privileged status through wireless transmission of identification information, while devices outside this region remain unprivileged. This creates localized access control zones that maintain operational simplicity for authorized users while preventing unauthorized interruptions from outside the designated area.
3Reliability
If spatial region-based access control is implemented, then security against unauthorized access is improved, but device complexity increases due to spatial coverage management
Solution Approach 1:
The patent implements self-service by enabling the receiver device to autonomously manage spatial access control without requiring external configuration or complex infrastructure. The receiver device automatically transmits privileged sender device identification information to devices within its spatial coverage area, and sender devices automatically receive and process this information to determine their access status. This self-service approach simplifies the system despite the added security functionality.
Data Source
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AI summary
Method, device and system for access control for wireless streaming of audio-visual data to a receiver device, it comprising the steps of: wirelessly connecting the receiver device to a plurality of sender devices positioned in an area, transmitting, by the receiver device, a privilege signal pertaining to a sender device to obtain a privileged status, the privilege signal having spatial coverage within the area, extracting, by at least one of sender devices, privilege credentials from the privilege signal, and transmitting the privilege credentials from the at least one sender device to the receiver device to acquire privileged status, controlling, by a sender device having a privilege status, access of wireless data streaming from any other sender devices to the receiver device. The method, device and system can be advantageous as it differentiates users and permits privileged sender device to control wireless streaming of audio-visual data from other sender devices to the receiver device.