Zoom Adapter Control for External Device Capability Detection

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Solution Overview

Problem

Existing image pickup systems lack a method to effectively control zoom position based on the capabilities of external apparatuses, such as smartphones, which may or may not include zoom speed control functions, leading to inconsistent zoom operations.

Innovation Solution

An image pickup apparatus with a receiving unit for external instructions, a control unit for processing zoom changes, and a determination unit to assess the external apparatus's zoom capabilities, adjusts the zoom adapter's settings accordingly, either following external notifications for compatible devices or using pre-set zoom speeds for incompatible devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the system uses a unified zoom control method for all external apparatuses, then the control logic is simple, but the zoom operation is inconsistent across different devices with varying capabilities

Engineering Contradiction:
Improvezoom operation consistencyVSAvoidcontrol logic complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The system dynamically adjusts the zoom control method based on the detected capabilities of the external apparatus. When a smartphone with zoom speed control function is detected, the system uses speed-controlled zoom; otherwise, it falls back to position-controlled zoom. This dynamic adaptation resolves the contradiction by making the control logic flexible rather than fixed.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes the control parameters based on the external apparatus type. For smartphones, it transmits zoom speed instructions; for other devices, it transmits zoom position instructions. This parameter change allows the system to maintain operational consistency across different devices while adapting the control method to each device's capabilities.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If the system detects external apparatus capabilities to adjust zoom control, then the zoom operation becomes consistent and appropriate, but the system complexity increases

Engineering Contradiction:
Improvezoom control reliabilityVSAvoidsystem structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The image pickup apparatus automatically detects the capabilities of the connected external apparatus and self-adjusts the zoom control method without requiring manual configuration. The system performs capability detection, determines the appropriate control method, and executes the corresponding zoom control autonomously, improving reliability while minimizing the burden on the user.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The control unit acts as an intermediary between the external apparatus and the zoom adapter. It detects the external apparatus type and mediates the communication by translating control instructions appropriately - converting smartphone touch events into either speed-based or position-based zoom commands based on the detected capability profile.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Adaptability or versatility

If the system uses position-based zoom control for all devices, then the control method is universal, but the zoom speed and responsiveness vary significantly

Engineering Contradiction:
Improvedevice compatibilityVSAvoidzoom speed consistency
Core Design Contradiction:
Adaptability or versatilityVSSpeed

Solution Approach 1:

The system dynamically selects between position-based and speed-based zoom control methods based on the external apparatus capabilities. For smartphones with acceleration sensors and processing capabilities, it uses speed-based control for responsive zoom; for other devices, it uses position-based control for universal compatibility. This dynamic selection resolves the contradiction between versatility and speed consistency.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS10567663B2Image pickup apparatus, control method therefore, and program communicating with an external device
Publication Date: 2020.02.18 CANON KK
  • US10567663B2 patent drawing
  • US10567663B2 patent drawing
  • US10567663B2 patent drawing

AI summary

An image pickup apparatus includes a receiver that receives, from an external apparatus, an instruction for changing a zoom position of a lens, a controller that performs control processing to change a zoom position of the lens based on a received instruction, and a determination unit that determines whether the external apparatus includes a function regarding zooming of the lens. When the determination unit determines that the external apparatus includes the function, the controller controls a zoom adapter, which performs a zoom setting of the lens and is attached to the lens, to change a zoom position of the lens based on a zoom setting notified by the external apparatus. When the determination unit determines that the external apparatus does not include the function, the controller controls the zoom adapter to change a zoom position of the lens based on a zoom setting performed in the zoom adapter.