Wavelet Image Frame Compression for Mobile-to-TV Transmission
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Solution Overview
Problem
Conventional multi-screen interaction technologies face performance limitations due to high computational demands and large data transmission requirements when displaying content between mobile terminals and smart televisions, leading to suboptimal user experiences.
Innovation Solution
The method employs Haar wavelet transformations and the Mallat algorithm to compress image frames on mobile terminals, which are then transmitted to smart televisions for decompression and display, utilizing existing hardware to offload processing and reduce data transmission volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If content is transmitted from mobile terminal to smart television for multi-screen display, then display scope and user experience are improved, but computational load on processor and data transmission amount increase dramatically
Solution Approach 1:
The patent extracts and transmits only the essential difference data (delta) between the original image frame and the predicted image frame, rather than transmitting the complete image data. This extraction of critical information significantly reduces the data transmission amount while maintaining display quality on the smart television.
Solution Approach 2:
The patent transforms image data from spatial domain to frequency domain using wavelet transform, changing the representation parameters of the image. This transformation enables more efficient compression by separating important visual information from less important details, reducing the overall data transmission requirement.
2Area of stationary object
If content is transmitted from mobile terminal to smart television for multi-screen display, then display scope and user experience are improved, but processor computational load increases dramatically
Solution Approach 1:
The patent performs image prediction and difference calculation in advance on the mobile terminal before transmission. By pre-processing the image data to extract only the necessary difference information, the computational load is shifted to the transmission phase rather than the display phase, reducing the processor burden during actual multi-screen operation.
Solution Approach 2:
The patent introduces an intermediate processing step using wavelet transform as a mediator between the original image and the transmitted difference data. This intermediary transformation enables more efficient data representation and reduces the computational complexity required for both compression and decompression operations.
Data Source
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AI summary
An image frame transmission method, a mobile terminal, and a smart television are disclosed. Data compression is performed on an original image frame of a display buffer area of the mobile terminal by using a wavelet transform compression algorithm, and after the compressed data is transmitted to the smart television and an inverse wavelet transform decompression processing is performed thereon, the original image frame is restored for display, so as to achieve the content display between the screens of the mobile terminal and the smart television. Existing hardware is used to compress and decompress data, which does not occupy operation resources of the mobile terminal and the smart television, and improves the system performance and accelerates the data compression speed. Also, the adopted wavelet transform compression algorithm can effectively improve the data compression ratio, reduce the data transmission amount in the transmission process, and reduce the hardware overhead.