Selectable Feedback Circuit for Consumable Chip Verification

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Solution Overview

Problem

Consumables for imaging devices face challenges in passing verification due to the inability to provide the required feedback voltage, necessitating multiple verification processes and limiting their usage.

Innovation Solution

A threshold variable feedback circuit with four feedback units connected in parallel, each comprising different transistors and a DC power supply, allowing the control unit to select and output various feedback voltages to meet the verification requirements of the imaging device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a consumable uses a fixed feedback voltage module, then the device structure is simple, but it cannot pass verification when the imaging device requires different feedback voltages

Engineering Contradiction:

Improvefeedback voltage compatibilityVSAvoidfeedback module structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The feedback module transitions from a static fixed voltage design to a dynamic selectable voltage design. The control unit dynamically selects which feedback unit to activate based on the verification requirements from the imaging device, allowing the same consumable to adapt to different voltage requirements without physical reconfiguration.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The invention changes the electrical parameter (feedback voltage) by providing multiple feedback units with different threshold voltages. The control unit selects the appropriate feedback unit whose threshold voltage matches the verification requirement, thereby changing the output voltage parameter to satisfy different verification conditions.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If a consumable implements multiple verification processes, then verification reliability improves, but the time required for verification increases

Engineering Contradiction:

Improveverification validityVSAvoidverification time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The consumable performs preliminary actions by pre-configuring multiple feedback units with different threshold voltages and preparing the control unit to select among them. This preliminary preparation allows the verification process to proceed efficiently without requiring multiple sequential verification attempts, as the correct feedback voltage is ready to be selected and provided immediately.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11351790B2Threshold variable feedback circuit,consumable chip, and consumable

Publication Date: 2022.06.07 HANGZHOU CHIPJET TECH CO LTD

AI summary

The present disclosure relates to the technical field of printer consumables, in particular to threshold variable feedback circuit, consumable chip and consumables. The feedback circuit comprises a control unit; a feedback module including four different feedback units connected in parallel between the output terminal and the ground; each one of the feedback units comprises a gating component and feedback component that are connected in series between the output terminal and the ground; the control unit is electrically connected with the gating component of each one of the feedback units such that the feedback module selects and outputs an electrical signal of one of the feedback units to the output terminal. Selecting different feedback units can generate different feedback voltages to respond to the verification requirements of the imaging device, so that the consumable can pass the verification of the imaging device.