HDMI Operation Data Routing for TTS Audio Output
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Solution Overview
Problem
Digital devices, such as DVD and BD players, face performance limitations when outputting audio through their Text-To-Speech (TTS) function, which can restrict video content playback.
Innovation Solution
A control method that outputs audio indicating device operations by transmitting operation data from a playback device to a connected display device via HDMI, allowing the display device to generate and output audio data without constraints, using CEC communication and TTS functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If audio is outputted from the transmission device (playback device) using TTS function, then text-to-speech functionality is provided, but performance limitations occur that restrict video content playback
Solution Approach 1:
The patent extracts the TTS audio output function from the transmission device (playback device) and relocates it to the reception device (display device). The playback device generates operation data indicating the content of operations, transmits this data to the display device via HDMI connection, and the display device generates audio data from the operation data and outputs the audio. This separation allows the playback device to focus on video playback performance while the display device handles TTS audio output, resolving the contradiction between TTS functionality and video playback performance.
2Ease of operation
If TTS audio output is implemented in the playback device, then accessibility for blind or visually impaired users is improved, but device performance is constrained
Solution Approach 1:
The patent introduces operation data as an intermediary between the playback device and the display device. Instead of the playback device directly generating and outputting audio, it generates operation data that describes the content of operations (such as playback control operations), transmits this data to the display device, which then generates the actual audio data. This intermediary approach allows the playback device to maintain its performance stability while still providing accessibility features through the coordinated system.
3Area of stationary object
If the playback device handles both video output and TTS audio output, then all functions are integrated in one device, but performance limitations occur
Solution Approach 1:
The patent segments the audio output function from the video output function by assigning them to different devices. The playback device handles video output and generates operation data, while the display device handles audio data generation and audio output. This segmentation is enabled by the HDMI connection that transmits operation data from the playback device to the display device. The result is that while functions are distributed across multiple devices rather than integrated in one, the overall system performance is improved because each device can optimize its resources for its specific function.
Data Source
AI summary
A control method outputs audio indicating content of an operation of a transmission device connected to a reception device. The control method includes accepting the operation of the transmission device, generating operation data indicating the content of the operation by the transmission device, transmitting the operation data from the transmission device to the reception device, generating audio data indicating the content of the operation based on the operation data by the reception device, and outputting the audio indicated by the audio data by the reception device.