Image Signal Processing Unit for Mobile TV Decompression
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Solution Overview
Problem
Conventional mobile phones require significant changes to their complex software architecture and baseband chip interfaces to support mobile TV functions, leading to increased costs and integration challenges.
Innovation Solution
An image signal processing unit with video and audio decoders decompresses compressed data, allowing video image frames to be displayed without altering the baseband processing unit's software architecture, using dedicated buses for efficient data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the baseband chip or application processor decompresses compressed video data for mobile TV function, then mobile TV capability is achieved, but the software architecture of the baseband chip must be significantly changed, increasing complexity and cost
Solution Approach 1:
The patent segments the video processing functions by separating the decompression function from the baseband chip and placing it in the image signal processing chip. This segmentation allows the baseband chip to maintain its original simple software architecture while the image signal processing chip handles the complex decompression tasks, thus achieving mobile TV function without increasing baseband chip complexity
Solution Approach 2:
The image signal processing chip is designed with multi-functionality, serving both traditional camera image processing and mobile TV video decompression. By adding video decompression capability to the existing image signal processing chip, the system achieves mobile TV function without requiring separate dedicated hardware or modifying the baseband chip's software architecture
2Adaptability or versatility
If the baseband chip software architecture is changed to support mobile TV, then mobile TV function is enabled, but manufacturing cost increases
Solution Approach 1:
The image signal processing chip is designed to perform multiple functions including both traditional camera image processing and mobile TV video decompression. This multi-functional design eliminates the need for separate dedicated hardware components, thereby reducing manufacturing costs while enabling mobile TV functionality
Solution Approach 2:
The image signal processing chip independently handles video decompression without requiring modifications to the baseband chip's software architecture. This self-service capability allows the system to achieve mobile TV function through hardware addition rather than complex software reconfiguration, simplifying the manufacturing process and reducing costs
Data Source
AI summary
A hand-held electrical communication device including an image sensing unit, a mobile TV receiver, an image signal processing unit, a display unit and a baseband processing unit is provided. The image sensing unit generates an original image frame. The mobile TV receiver receives a compressed video data. The image signal processing unit adjusts the original image frame to be an adjusted image frame or decompresses the compressed video data into a video image frame, and respectively scales the adjusted image frame or the video image frame to be a scaled image frame. The baseband processing unit displays the scaled image frame on the display unit.