PTZ Camera Status Notification via Segmented Response Fields

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Solution Overview

Problem

Current image capture apparatuses lack clear notification mechanisms for determining whether the PTZ driving mechanism is in an abnormal state or initialization, as existing interfaces like ONVIF only provide limited status values, making it difficult for client apparatuses to distinguish between normal operation and potential issues.

Innovation Solution

The image capture apparatus generates a response that specifies its operation state using a combination of fields, including a first field, to clearly indicate if it is in initialization or has an error, allowing external apparatuses to determine the state based on multiple descriptions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the MoveStatus field uses only three predefined values (MOVE, IDLE, UNKNOWN), then the interface complexity is reduced and compatibility is improved, but the ability to clearly distinguish between initialization state and error state is lost

Engineering Contradiction:
Improveinterface compatibilityVSAvoidstate information clarity
Core Design Contradiction:
Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent segments the status notification into two distinct parts: the MoveStatus field (with three standardized values: MOVE, IDLE, UNKNOWN) and a separate Error field (with detailed error codes including Initialization error). This segmentation allows the system to maintain interface compatibility through the standardized MoveStatus field while simultaneously providing clear state differentiation through the dedicated Error field, resolving the contradiction between interface simplicity and information clarity.

Inventive Principle:
Principle #1Segmentation

2Loss of information

If the system provides detailed state information through multiple fields, then the clarity of state notification is improved, but the interface complexity increases

Engineering Contradiction:
Improvestate information clarityVSAvoidinterface complexity
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The patent introduces the Error field as an intermediary element that works in conjunction with the MoveStatus field. The Error field acts as a mediator that provides detailed state information (including initialization and error states) without disrupting the existing three-value MoveStatus structure. This intermediary approach allows detailed information transmission while maintaining compatibility with existing interfaces, thus reducing the perceived complexity for clients.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of operation

If the system uses a standardized interface with limited status values, then ease of operation is improved, but the ability to provide clear notification of abnormal states is reduced

Engineering Contradiction:
Improveclient operation simplicityVSAvoidstate notification reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent segments the notification mechanism into a standardized MoveStatus field for simple operation (maintaining ease of use) and a detailed Error field for reliable state notification (improving reliability). The segmentation allows clients to easily process the three standardized MoveStatus values while simultaneously providing a reliable error code in the Error field that clearly indicates initialization or abnormal states, thus resolving the contradiction between operational simplicity and notification reliability.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS9936118B2Image capture apparatus, information processing apparatus, image capture system, control methods for the same, and program
Publication Date: 2018.04.03 CANON KK
  • US9936118B2 patent drawing
  • US9936118B2 patent drawing
  • US9936118B2 patent drawing

AI summary

An image capture apparatus capable of communicating with an external apparatus via a network has a change unit configured to change an image capture position of image capturing means for capturing an image of an object. In response to a request received from an external apparatus, the image capture apparatus generates a response including a first field in which the operation state of the change unit is described, and sends the generated response to the external apparatus. Here, if the change unit is in initialization, the image capture apparatus generates a response that specifies that the change unit is in initialization using a combination of descriptions in multiple fields, including the first field.