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One-line dimming method, circuit, chip and system

A dimming circuit, a first-line technology, applied in the field of circuits, can solve the problems of reduced dimming accuracy, interference, and reduced dimming accuracy, and achieve the effects of improving accuracy, simple structure, and avoiding counting errors

Pending Publication Date: 2018-11-23
SHANGHAI AWINIC TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the interrupt mechanism is widely used in the existing operating systems. When the interrupt mechanism is executed, it will interfere with the output line pulse signal, thereby reducing the accuracy of dimming.
[0003] Therefore, it is urgent to provide a technical solution to effectively solve the problem that the accuracy of dimming is reduced due to the interference of the first-line pulse signal

Method used

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  • One-line dimming method, circuit, chip and system
  • One-line dimming method, circuit, chip and system
  • One-line dimming method, circuit, chip and system

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Embodiment 1

[0042] figure 1 A schematic structural diagram of a one-line dimming circuit provided in the embodiment of the present application, the circuit may be a part of a one-line dimming chip, such as figure 1 As shown, it includes: one-line pulse input terminal, deglitch (Deglitch) circuit, counter (CURRENT ADC), controller, current sink (CURRENT SINK).

[0043] The one-wire pulse input terminal is used to receive one-wire pulse signal (1-WIRE PULSES INPUT), and the resistor REN is the pull-down resistor of the one-wire pulse input terminal, which is used to make the default input of the one-wire pulse input terminal be low level.

[0044] Anti-glitch (Degl tch) circuit, used to filter out the glitch signal in the one-wire pulse signal (1-WIRE PULSES INPUT). Of course, it is also possible to directly connect the one-line pulse input end to the counter without providing a deglitch circuit, which is not limited in this embodiment.

[0045] The counter (CURRENT ADC) starts counting u...

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Abstract

The embodiment of the present application provides a one-line dimming method, a circuit, a chip, and a system. The one-line dimming circuit comprises: a pulse input end, a time control module, a counter, and a driving module, wherein the pulse input end is used to receive a one-line pulse signal; the time control module is used to determine a control signal according to the one-line pulse signal and the preset duration, and the control signal is used to control the counter to be in the counting state or stopping counting state; when in the counting state, the counter is used to count accordingto the one-line pulse signal, and when in the stopping counting state, the counter is used to output the counting result; the driving module is used to determine the driving signal according to the counting result for dimming. The first-line dimming method, the circuit, the chip and the system provided by the embodiment of the present invention, generate the control signal through the time control module, and control the counter to be in the counting state or stopping counting state through the control signal, thereby increasing the anti-interference ability of the first-line dimming system,and improving the correctness of dimming.

Description

technical field [0001] The embodiments of the present application relate to the field of circuit technology, and in particular to a one-line dimming method, circuit, chip and system. Background technique [0002] Most of the existing one-line dimming technologies use the processor of the operating system to output a one-line pulse signal, and then control the start and end of dimming, control the brightness of light, etc. through this one-line pulse signal. However, an interrupt mechanism is commonly used in existing operating systems, and when the interrupt mechanism is executed, it will interfere with the output line pulse signal, thereby reducing the accuracy of dimming. [0003] Therefore, it is urgent to provide a technical solution to effectively solve the problem that the dimming accuracy is reduced due to the interference of the one-line pulse signal. Contents of the invention [0004] In view of this, one of the technical problems solved by the embodiments of the...

Claims

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Application Information

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IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/00Y02B20/30
Inventor 李冬超
Owner SHANGHAI AWINIC TECH CO LTD
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