Camera Transceiver Antenna Placement and Bypass Circuitry

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Solution Overview

Problem

In smart home devices, the close physical spacing of circuit components and shared frequency bands lead to poor isolation between transceivers, causing interference and potential damage from excessive input power, which affects communication performance and device reliability.

Innovation Solution

Implementing a camera assembly with strategically positioned antennas and bypass circuitry, along with control signals to manage transmission access, ensuring optimal coexistence of multiple transceivers by configuring antenna connections based on active or inactive states to prevent signal amplification during interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If multiple transceivers are placed in close physical spacing within a compact device, then device integration and miniaturization are improved, but isolation between transceivers deteriorates causing interference and harmful effects

Engineering Contradiction:

Improvedevice sizeVSAvoidtransceiver interference

Core Design Contradiction:

Volume of moving objectVSObject-affected harmful factors

Solution Approach 1:

The device segments the antenna system into multiple independent antenna elements (first antenna and second antenna) that can be independently controlled and configured. This segmentation allows each antenna to be optimally positioned for its specific transceiver while maintaining physical compactness, thereby reducing interference between closely spaced transceivers

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent positions antennas in different spatial dimensions and orientations within the compact device housing. By utilizing three-dimensional space efficiently and placing antennas at different locations and angles, the design achieves adequate isolation between transceivers without increasing overall device volume

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Measurement precision

If amplifiers are used to boost received signals, then signal sensitivity is improved, but harmful effects from poor isolation are worsened when transceivers operate simultaneously

Engineering Contradiction:

Improvesignal sensitivityVSAvoidexcessive input power

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The system dynamically switches between amplifier and bypass line based on real-time detection of transceiver operational states. When one transceiver is transmitting, the system automatically routes its received signal through the bypass line instead of the amplifier, preventing excessive input power while maintaining signal sensitivity when transceivers operate independently

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The bypass line acts as an intermediary pathway that provides an alternative signal route when the amplifier would be harmful. This intermediary element allows the system to maintain signal sensitivity through the amplifier during normal operation while protecting against harmful effects by routing signals through the bypass line during simultaneous transceiver operation

Inventive Principle:

Principle #24Intermediary (Mediator)

3Object-affected harmful factors

If bypass circuitry and control signals are implemented to manage transceiver coexistence, then harmful interference is reduced, but device complexity increases

Engineering Contradiction:

Improvetransceiver interferenceVSAvoidcircuit configuration

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The system implements feedback mechanisms where transceivers monitor each other's operational states and exchange control signals. This feedback enables automatic, coordinated switching between amplifier and bypass line configurations, reducing interference while maintaining manageable complexity through intelligent control rather than complex passive circuitry

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS10812762B2Systems, methods, and devices for managing coexistence of multiple transceiver devices by optimizing component layout

Publication Date: 2020.10.20 GOOGLE LLC

AI summary

The various implementations disclosed herein include a camera assembly configured for communication over multiple communication protocols. The camera assembly includes: (1) an enclosed housing; (2) a lens module positioned within the enclosed housing and configured to receive light; (3) circuit board(s) positioned within the enclosed housing; (4) communication circuitry coupled to the circuit board(s) and configured to wirelessly communicate over a plurality of different communication protocols, the communication circuitry including one or more transceivers configured for communication over a first communication protocol and a second communication protocol; (5) a first antenna arranged at a first location on the circuit board(s), the first antenna configured for communication over the first communication protocol; and (6) a second antenna arranged at a second location on the circuit board(s), the second antenna configured for communication over the second communication protocol.