Analog Optical Interconnect for Sensor Processing
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Solution Overview
Problem
Current data communication between CMOS image sensors and memory or processors is slow and power-hungry, with high bandwidth requirements, often bottlenecked by analog-to-digital conversions in optical interconnects.
Innovation Solution
Implementing an analog optical interconnect that eliminates or reduces analog-to-digital conversions between image sensors and processors, enabling direct analog signal transmission and processing, including the use of analog optical connections, pixel arrays, crossbar arrays, and timing control units to facilitate high-speed, energy-efficient data transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If digital communication with analog-to-digital conversion is used, then data can be processed digitally, but bandwidth requirements increase and power consumption increases
Solution Approach 1:
The patent extracts the analog-to-digital conversion step from the data transmission path by implementing an all-optical interconnect system. Optical signals are transmitted directly between sensors and processors without being converted to digital electrical signals, thereby eliminating the bandwidth and power overhead associated with ADC operations while maintaining digital processing capabilities at the destination.
Solution Approach 2:
The patent substitutes electrical signal transmission with optical signal transmission. By replacing electrical interconnects with optical interconnects, the system eliminates the need for analog-to-digital conversion and reduces both power consumption and bandwidth requirements, as optical signals can carry more data with lower energy expenditure.
2Speed
If analog-to-digital conversion is performed, then digital processing is enabled, but data transmission speed decreases
Solution Approach 1:
The patent removes the analog-to-digital conversion stage from the data transmission pipeline by implementing direct optical interconnects. This extraction of the conversion step eliminates the speed bottleneck and complexity associated with ADC operations, allowing data to be transmitted at optical speeds while still enabling digital processing at the receiving end.
Solution Approach 2:
The patent introduces optical signals as an intermediary medium between sensors and processors. Instead of converting analog signals to digital electrical signals, the system uses optical signals to carry information directly, simplifying the transmission path and increasing speed while maintaining the ability to perform digital processing at the destination through optical-to-digital conversion only where needed.
3Adaptability or versatility
If optical interconnects with analog-to-digital conversion are used, then compatibility with digital processors is achieved, but the system becomes more complex and less efficient
Solution Approach 1:
The patent extracts the analog-to-digital conversion function from the interconnect infrastructure and relocates it to the processor interface layer. By doing so, the optical interconnect system maintains simplicity and efficiency in the transmission path while still achieving compatibility with digital processors at the point of data reception and processing.
Solution Approach 2:
The patent uses optical signals as an intermediary that bridges sensors and digital processors without requiring conversion infrastructure along the transmission path. The optical interconnect serves as a高效 mediator that maintains signal integrity and speed while enabling digital processing compatibility only where it is actually needed—at the processor interface.
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
This approach significantly reduces bandwidth requirements, increases data transmission speed, and enhances energy efficiency by eliminating the need for analog-to-digital conversions, allowing for computation in the analog domain with lower power consumption.
Implementation Method 1
Optical interconnects may be used to send signals between integrated circuits or portions thereof using light
Data Source
AI summary
Provided is a device, including: an analog optical interconnect; an input array coupled to the analog optical interconnect; and an analog or mixed signal processor or a memory array coupled to the input array via the analog optical interconnect.