Digital High Voltage Generator: Simplified and Reliable Design
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Summary
Problems
Conventional high voltage generating apparatuses for image forming devices rely on analog control methods, leading to errors due to component variance, increased unit costs, potential malfunctions, and difficulty in controlling output voltage, as they require numerous components and complex assembly processes.
Innovation solutions
A high voltage generating apparatus utilizing a digital control method implemented in an ASIC chip, where a switching unit controls voltage through interrupt operations based on digital control codes, with a digital interface for communication protocols like I2C and SPI, and a digital controller adjusting interrupt periods based on feedback signals.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If an analog control method is used in conventional high voltage generating apparatus, then the output voltage can be controlled, but the component complexity increases and device complexity increases
Why choose this principle:
The patent replaces the analog control system with a digital control system implemented in an ASIC chip. The digital controller uses digital signals and logic circuits to control the switching elements, substituting the continuous analog voltage control with discrete digital control. This reduction from analog to digital domain simplifies the overall device architecture while maintaining voltage control capability.
Principle concept:
If an analog control method is used in conventional high voltage generating apparatus, then the output voltage can be controlled, but the component complexity increases and device complexity increases
Why choose this principle:
The patent integrates multiple control functions into a single ASIC chip that combines the digital controller, switching control logic, and voltage regulation functions. By merging these previously separate analog control components into one integrated digital control unit, the device complexity is reduced while preserving the output voltage control functionality.
Application Domain
Data Source
AI summary:
A high voltage generating apparatus utilizing a digital control method implemented in an ASIC chip, where a switching unit controls voltage through interrupt operations based on digital control codes, with a digital interface for communication protocols like I2C and SPI, and a digital controller adjusting interrupt periods based on feedback signals.
Abstract
Provided are a high voltage generating apparatus controlled by a digital control code and a method thereof. The high voltage generating apparatus includes a switching unit for controlling a voltage induced at the secondary coil of a power transformer by an interrupt operation, wherein the interrupt operation interrupts the current flowing through the primary coil of the connected power transformer. A digital controller for controlling the interrupt operation of the switching unit according to the control data. A digital interface for providing the control data to the digital controller is provided. The control data is extracted from the control code transferred using one of a plurality of predetermined communication protocols. The switching unit, digital interface, and digital controller can be implemented in one ASIC (application-specific integrated circuit) chip.