HDMI Commercial Blocking Circuit With Timed Signal Resume
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Solution Overview
Problem
Existing devices do not effectively block HDMI signals during commercial breaks in a timed and automated manner, failing to provide an enjoyable viewing experience by manually switching inputs or turning them off, and subscription-based services do not allow users to physically block commercials on any media content.
Innovation Solution
A device with two HDMI ports and a microcontroller circuit that blocks the HDMI signal during commercial breaks upon user command, using an IR receiver and bus switch IC to disconnect the signal, then resumes it after a predefined duration, ensuring seamless viewing without commercials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If manual switching between HDMI inputs or turning signals on/off is used, then the user can control signal transmission, but the user cannot automatically block commercials during specific time periods
Solution Approach 1:
The device automatically detects commercial breaks and blocks them without requiring continuous user intervention. The microcontroller monitors the HDMI signal for commercial break patterns and autonomously activates the bus switch to block the signal during commercials, then restores it when programming resumes.
Solution Approach 2:
The device is pre-configured with commercial break timing information from electronic program guides (EPG) or metadata. This preliminary information allows the device to proactively block commercials before they start and restore the signal before programming resumes, eliminating the need for real-time manual switching.
2Adaptability or versatility
If subscription-based media services are used to avoid commercials, then commercials are not shown, but the user cannot block commercials on any media content from any provider
Solution Approach 1:
The device interfaces with standard HDMI ports and works with any media content from any provider, whether cable, satellite, broadcast, or streaming services. The bus switch IC and microcontroller design are provider-agnostic, allowing the device to block commercials universally across different media sources without requiring service-specific integration.
Solution Approach 2:
The device acts as an intermediary component inserted between the media source and television. This positioning allows it to intercept and block commercial signals regardless of the content provider, while maintaining compatibility with existing HDMI infrastructure and not requiring changes to the media service itself.
3Object-affected harmful factors
If the HDMI signal is blocked during commercial breaks, then commercials are blocked, but the signal transmission is interrupted
Solution Approach 1:
The device periodically switches the HDMI signal state based on commercial break timing. The microcontroller activates the bus switch to block the signal during identified commercial periods, then deactivates it when programming resumes. This periodic on/off action aligned with commercial break structure achieves commercial blocking while maintaining signal integrity for programming content.
Solution Approach 2:
The device is designed with timing margins that restore the signal slightly before commercial breaks end and maintain blocking slightly past their start. This cushioning approach ensures seamless transitions that prevent any potential signal interruption or visual artifacts, maintaining reliability during the switching transitions.
Data Source
AI summary
A device that allows the user to block television commercials by pressing a button on a remote controller. The device works by temporarily not transmitting the audio-visual signal, for a period of roughly 120 seconds, which is the length of a standard television commercial break, and then continuing to transmit the audio-visual signal after this time has elapsed.