Read Signal Processor With LVDS Output for High-Pixel Image Transfer
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Solution Overview
Problem
Conventional signal processing ICs are inadequate for high-pixel rate and long-distance image data transmission, requiring additional components and increasing mounting area and costs.
Innovation Solution
A read signal processor that includes a sample-hold unit, amplifying unit, converting unit, and output unit to serialize and convert digital data into low-amplitude differential signals for efficient transmission, and an option for multiple-bit parallel output in time division.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional signal processing IC is used for high-pixel rate and long-distance transmission, then additional driver and processing components are required, but mounting area and component costs increase
Solution Approach 1:
The patent merges the driver circuit and signal processing functions directly into the image sensor chip, eliminating the need for separate driver components. The sensor chip now integrates photoelectric conversion, signal amplification, and digital processing capabilities, allowing high-pixel rate transmission without increasing mounting area.
Solution Approach 2:
The image sensor chip is designed to perform multiple functions: photoelectric conversion, signal amplification, analog-to-digital conversion, and data processing. This multi-functional integration allows the single chip to handle high-pixel rate transmission and long-distance communication without requiring additional specialized components.
2Speed
If conventional signal processing IC is used for high-pixel rate and long-distance transmission, then additional driver and processing components are required, but component costs increase
Solution Approach 1:
By combining multiple functions (photoelectric conversion, amplification, ADC, processing) into a single image sensor chip, the patent reduces the total component count. This integration eliminates the need for separate driver ICs and processing units, thereby reducing component costs while enabling high-pixel rate transmission.
Solution Approach 2:
The patent changes the operational parameters of the image sensor chip by enhancing its processing capability to handle high-pixel rate data directly. This parameter change allows the chip to function as both sensor and processor, eliminating the need for additional expensive components and reducing overall system cost.
3Speed
If point sequential image data is processed for each color separately, then transmission capability is improved, but device complexity increases
Solution Approach 1:
The patent merges the processing of multiple color channels (R, G, B) into a unified processing architecture within the image sensor chip. Instead of separate processing circuits for each color, the integrated design handles all color data through shared processing resources, reducing device complexity while maintaining high transmission capability.
Solution Approach 2:
The processing unit within the image sensor chip is designed with universal functionality to handle point sequential image data for all color channels simultaneously. This multi-functional processing capability enables efficient transmission without requiring separate dedicated processing circuits for each color, thereby reducing overall device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient transmission of high-pixel rate image data over long distances without adding components, reducing costs and mounting area, while supporting both low-amplitude differential and parallel output modes.
Implementation Method 1
a color linear image sensor 1 for performing photoelectric conversion on incident light and outputting sensor output signals corresponding to three colors of R, G and B
Data Source
AI summary
A read signal processor includes an output unit that serializes a plurality of bits of digital data for each of the colors to obtain a plurality of serial signals, converts the serial signals to a plurality of low-amplitude differential signals, and outputs the serial low-amplitude differential signals.