Signal Processing Apparatus Dynamic Transfer Mode Switching
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Solution Overview
Problem
Existing data transfer methods, such as the IEEE 1394 interface's isochronous transfer mode, often result in discrepancies between the original and received image data files due to real-time transfer limitations, particularly when transferring moving image data, leading to incomplete or altered data storage.
Innovation Solution
A signal processing apparatus with instruction, decoder, communication, and control means that allows for switching between isochronous and asynchronous transfer modes during data reception, enabling precise control over data decoding and storage to ensure accurate file transfer and recording.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If isochronous transfer mode is used for real-time image data transfer, then real-time decoding and display is enabled, but data discrepancies occur between original and received files
Solution Approach 1:
The system dynamically switches between isochronous transfer mode (for real-time viewing) and asynchronous transfer mode (for accurate file storage) based on the operational requirement. The receiving apparatus can change transfer modes during operation, allowing real-time display when needed and accurate file capture when required.
Solution Approach 2:
The invention changes the transfer mode parameter from fixed to variable. By allowing the transfer mode to change between isochronous and asynchronous based on the operational state, the system can maintain both real-time performance and data accuracy as needed.
2Productivity
If real-time transfer mode is used, then continuous data stream is maintained, but complete file recording is compromised
Solution Approach 1:
The system dynamically adjusts the transfer mode based on whether real-time processing or complete file recording is the priority. During real-time viewing, isochronous mode maintains continuous stream; when file recording is needed, the system switches to asynchronous mode to ensure completeness.
Solution Approach 2:
The invention segments the data transfer process into two distinct modes: isochronous transfer for real-time viewing and asynchronous transfer for complete file capture. This segmentation allows each mode to optimize for its specific purpose without compromising the other.
3Measurement precision
If isochronous transfer mode is used, then synchronized data transfer is achieved, but data security and response confirmation are reduced
Solution Approach 1:
The system dynamically selects between transfer modes based on the requirement for timing accuracy versus data security. When timing synchronization is critical, isochronous mode is used; when data security and confirmation are prioritized, asynchronous mode is selected.
Data Source
AI summary
A signal processing apparatus of a configuration capable of requesting a transmission of an information file including the currently received information data in response to an instruction for starting a recording in the course of reception of information data transmitted from a transmitting apparatus and decoding of the information data by a decoder, and receiving the information file transmitted from the transmitting apparatus in response to the transmission request, while suspending the decoding process by the decoder.