Electronic Apparatus Accessory Contact Spacing for Communication Reliability
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Solution Overview
Problem
Communication errors occur when contacts between an electronic apparatus and an accessory disconnect during operation, particularly if the contact for detecting accessory attachment remains connected but the contact for enabling communication between them disconnects.
Innovation Solution
The electronic apparatus and accessory are designed with a specific arrangement of contacts where the attachment detection contact is positioned closer to the communication request contact than to the end contacts, reducing the distance between these critical contacts to minimize noise interference and ensure stable connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If contacts are arranged in a conventional layout, then the device structure is simple, but communication errors occur when contacts disconnect during operation
Solution Approach 1:
The patent applies preliminary action by strategically positioning the attachment detection contact and communication request contact closer to each other before any disconnection event occurs. This pre-arranged configuration ensures that when partial disconnection happens during operation, the critical contacts for attachment detection and communication requests remain connected, preventing communication errors before they can occur.
Solution Approach 2:
The patent applies local quality by creating a differentiated contact arrangement where specific contacts (attachment detection and communication request contacts) are positioned with different spacing relationships compared to conventional layouts. The distance between attachment detection contact and communication request contact is made shorter than the distance from communication request contact to end contacts, giving critical functional contacts special positional quality that enhances reliability.
2Object-affected harmful factors
If the attachment detection contact is positioned far from end contacts, then noise interference increases, but positioning it close to end contacts complicates the contact layout
Solution Approach 1:
The patent positions the attachment detection contact and communication request contact in a specific configuration before operation, where their mutual distance is shorter than the distance from communication request contact to end contacts. This preliminary positioning reduces noise interference on critical signals while maintaining a manageable overall layout.
Data Source
AI summary
An electronic apparatus includes a plurality of contacts electrically connectable to an accessory and arranged in a first direction orthogonal to a direction in which the accessory is attached. The contacts include an attachment detection contact to detect an attachment of the accessory to the electronic apparatus, and a communication request contact for a communication request from the accessory to the electronic apparatus. The attachment detection and communication request contacts are disposed between a contact closest one end and a contact closest to another end in the first direction. The attachment detection contact is disposed between the communication request contact and the contact closest to the one end. In the first direction, a distance between the attachment detection contact and the communication request contact is shorter than that between the communication request contact and the contact closest to the other end.