Pixel Array Signal Sharing for Faster Low-Power Optoelectronics
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Solution Overview
Problem
Existing optoelectronic systems face inefficiencies in data transmission and signal management, leading to increased power consumption and slower data processing in pixel arrays.
Innovation Solution
The implementation of a novel optoelectronic system with pixel arrays connected in rows and columns, where circuits receive data signals and activation signals are shared between columns, reducing the number of signals required and optimizing data processing through time and phase modulation, and utilizing a controller to manage signal distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate control signals are provided for each column in the pixel array, then each column can be independently controlled, but the number of signals increases leading to increased device complexity and power consumption
Solution Approach 1:
The patent combines multiple column control functions into a single shared control signal that is time-multiplexed across different columns. Instead of providing separate continuous control signals to each column, the system uses one control signal that sequentially activates different columns at different time intervals, thereby reducing the total number of control signals while maintaining independent column control capability.
Solution Approach 2:
The control system implements periodic activation of columns using a time-multiplexing scheme where a single control signal cycles through different columns in a periodic manner. Each column is activated during its specific time slot within the periodic cycle, allowing the system to control multiple columns with one periodic control signal rather than requiring separate continuous signals for each column.
2Measurement precision
If more control signals are used to address each pixel individually, then data transmission precision is improved, but power consumption increases
Solution Approach 1:
The system uses periodic time-multiplexed signaling where data is transmitted to different columns in sequential time slots rather than simultaneously. This periodic transmission approach maintains precise data delivery to each pixel while significantly reducing the number of active signal lines at any given moment, thereby lowering power consumption compared to simultaneous multi-column driving.
Solution Approach 2:
The control system dynamically allocates signal resources by activating only the specific column that requires data transmission at each moment. This dynamic time-division multiplexing ensures that full signal precision is maintained for the active column while other columns remain inactive, optimizing the balance between data transmission precision and power consumption.
3Device complexity
If activation signals are shared between columns, then the number of signals is reduced, but data processing speed may be affected
Solution Approach 1:
The system employs high-frequency periodic time-multiplexing where the shared control signal switches between columns at rapid intervals. Although columns are activated sequentially rather than simultaneously, the high switching frequency of the periodic signal ensures that the overall data processing throughput remains high, effectively bridging the gap between signal reduction and speed maintenance.
Solution Approach 2:
The control system prepares and pre-loads data for upcoming column activations during the transition periods between column switches. This preliminary action ensures that when each column is activated by the shared control signal, the data is already ready for immediate processing, minimizing any potential speed penalty from using shared rather than dedicated control signals.
Data Source
AI summary
The present invention discloses an optoelectronic system comprising an array of optoelectronic pixels or pixel arrays connected in rows and columns (or other wo-dimensional arrays). The pixel arrays also have circuits and optoelectronic microdevices. The controller and driver-based enable the circuits in columns and rows upon an activation signal and pixel data packets. The signals involved can include but are not limited to input data, clocks, address, activation signals, read signals, or output data.