Camera Accessory Terminal Layout for Noise Reduction
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Solution Overview
Problem
Existing camera systems face challenges in efficiently and reliably attaching and detaching interchangeable lenses, leading to potential miscommunication and power supply issues due to noise and wear on terminal contacts.
Innovation Solution
The camera system incorporates a specific terminal arrangement and communication protocol where the RDY terminal is positioned away from noise-prone terminals, and the CLK and HCLK terminals are positioned between HDATA and DATAL terminals to minimize noise effects, and the VBAT terminal is isolated from other terminals to prevent erroneous power supply, ensuring stable communication and attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminals are arranged in a conventional layout during attachment and detachment, then the attachment process is simple, but noise interference and wear on terminal contacts increase leading to miscommunication and power supply issues
Solution Approach 1:
The patent applies local quality by assigning different functional roles to different terminal positions. The RDY terminal is positioned away from noise-prone areas, while CLK and HCLK terminals are placed between data terminals to minimize noise effects. This localized optimization of terminal positions reduces noise interference and wear on specific contacts, thereby improving communication stability during attachment and detachment operations.
2Measurement precision
If terminal contacts are subject to wear and noise during attachment/detachment, then the attachment mechanism remains simple, but data communication accuracy deteriorates
Solution Approach 1:
The patent positions the RDY terminal away from noise-prone terminal contacts to locally optimize its signal quality. This ensures that the attachment detection signal remains accurate even when other terminals experience wear and noise during repeated attachment and detachment operations.
3Reliability
If power supply terminals are positioned close to other terminals, then the device structure is compact, but erroneous power supply occurs due to noise and wear
Solution Approach 1:
The patent applies local quality by isolating the VBAT power supply terminal from other terminals. This localized separation prevents noise and wear from affecting the power supply connection, ensuring stable power delivery even during repeated attachment and detachment operations while maintaining a compact overall device structure.
4Reliability
If CLK and HCLK terminals are positioned adjacent to noise-prone terminals, then the terminal layout is compact, but noise effects increase causing miscommunication
Solution Approach 1:
The patent positions the CLK and HCLK terminals between data terminals (DATAL and HDATA) to locally optimize their noise immunity. This strategic placement creates a shielded position for the clock signals, reducing the impact of noise and wear from adjacent terminals and preventing miscommunication during attachment and detachment operations.
Data Source
AI summary
An accessory for a camera body, the camera body including a second camera-side clock terminal to which a second clock signal is input, a first camera-side power supply terminal that outputs first power, and a camera-side input terminal to which a signal indicating whether or not data communication is allowed is input, the accessory includes: a second terminal that contacts with the first camera-side power supply terminal; a sixth terminal that contacts with the camera-side input terminal; a tenth terminal that contacts with the second camera-side clock terminal; a first terminal group comprising a plurality of terminals between the second terminal and the sixth terminal; and a second terminal group comprising a plurality of terminals between the sixth terminal and the tenth terminal, wherein the number of terminals in the first terminal group is same as the number of terminals in the second terminals.