Communications Gateway Heartbeat Signal Encoding for Content Security
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Solution Overview
Problem
Residential gateways struggle to prevent unauthorized access and sharing of subscription multimedia content, as it is difficult to determine whether a set-top box device is located at the subscriber's location or nearby, leading to potential theft of services.
Innovation Solution
A method involving a communications gateway that encodes multimedia content based on a heartbeat signal superimposed on an AC electrical power signal, allowing only authorized devices connected to the same electrical wiring system to decode and receive the content, thereby preventing unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless transmission of subscription content is enabled at the residential gateway, then content delivery to external devices is improved, but unauthorized access and service theft increase
Solution Approach 1:
The patent applies local quality by encoding the multimedia content with a heartbeat signal that is specific to the local electrical wiring system of the subscriber's premises. The encoding component modifies the content based on the detected heartbeat signal characteristics (frequency, amplitude, phase) that are unique to that location's power system, ensuring that only devices at the same location can decode and access the content wirelessly.
2Reliability
If content is encoded based on heartbeat signal, then unauthorized access is prevented, but device complexity increases
Solution Approach 1:
The patent uses the AC electrical power signal as an intermediary carrier to transmit the heartbeat signal from the power system to the gateway device. The encoding component detects this intermediary heartbeat signal embedded in the power lines and uses it to encode the multimedia content, creating a secure link between the power system and the content delivery system without requiring direct communication infrastructure.
3Measurement precision
If heartbeat signal detection is implemented, then location verification is improved, but measurement precision requirements increase
Solution Approach 1:
The patent replaces traditional mechanical or electronic location verification systems with an electrical field-based detection method. Instead of using GPS, Wi-Fi positioning, or physical sensors to determine location, the system uses the existing AC electrical power infrastructure to carry and detect the heartbeat signal, substituting a complex measurement system with a simpler electrical signal detection approach that leverages the already-present power lines.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively prevents unauthorized use of subscription multimedia content by ensuring only devices within the same electrical wiring system can decode the encoded content, thus adhering to service agreements and preventing service theft.
Implementation Method 1
a heartbeat signal that is superimposed on an alternating current (AC) electrical power signal associated with an electrical wiring system of the customer premises
Data Source
AI summary
A method includes receiving, at a communications gateway associated with a customer premises, multimedia content from a communications network. The method includes superimposing, via the communications gateway, a heartbeat signal on an alternating current electrical power signal associated with an electrical wiring system of the customer premises. The method includes encoding the multimedia content based on the heartbeat signal to produce encoded multimedia content at the communications gateway. The method also includes wirelessly transmitting the encoded multimedia content from the communications gateway to a device.