Imaging Device RAW Data Transmission Control
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Solution Overview
Problem
Imaging devices face issues when transmitting uncompressed RAW data to external devices via HDMI, as the receiving device may not support this format, leading to unrecognized images and increased power consumption due to unnecessary processing.
Innovation Solution
An imaging device with a transmission unit that sends uncompressed RAW data via HDMI and a control unit that prevents output processing if the external device does not support it, while also allowing conversion to YC data if necessary, and utilizing identification information from the external device to determine compatible transmission formats.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If uncompressed RAW data is transmitted to an external device via HDMI, then the image quality and processing capability on the reception device side are improved, but the reception device may not support the RAW data format leading to unrecognized images
Solution Approach 1:
The patent implements dynamic format selection by making the transmission format adaptable based on reception device capabilities. The system transitions from a static transmission approach to a dynamic one where the control unit selects between RAW data and YC data formats based on EDID information, ensuring both high quality when supported and reliable compatibility when needed
Solution Approach 2:
The patent changes the transmission parameter (data format) based on reception device capabilities. By reading EDID information and detecting whether the external device supports RAW data, the system adjusts the transmission format parameter dynamically, switching between uncompressed RAW data and YC data to optimize both image quality and compatibility
2Measurement precision
If output processing is performed to prepare uncompressed RAW data for transmission, then the transmission quality is improved, but power consumption increases when the external device does not support RAW data
Solution Approach 1:
The patent performs preliminary detection of external device capabilities through EDID reading before initiating data transmission. By detecting RAW data support in advance, the system avoids performing unnecessary output processing (writing to memory, reading from memory) when the device doesn't support RAW data, thereby preventing wasted power consumption while maintaining transmission quality when supported
Solution Approach 2:
The patent implements a feedback mechanism where the control unit reads EDID information from the external device to determine RAW data support capability. This feedback information guides the transmission decision, allowing the system to adjust its output processing activities based on actual device capabilities, thus optimizing power consumption while maintaining transmission quality
Data Source
AI summary
To enable uncompressed RAW data to be appropriately transmitted from an imaging device to an external device. A transmission unit transmits uncompressed RAW data to an external device via a transmission path. In a case where the external device does not support the uncompressed RAW data, the control unit controls the transmission unit so as not to perform output processing for outputting the uncompressed RAW data to the transmission path. For example, the information reception unit receives identification information indicating that the external device supports the uncompressed RAW data from the external device via the transmission path.