Single-button power-on and power-off circuit and head-wearing display device

Abstract

The invention provides a single-button power-on and power-off circuit and a head-wearing display device. The single-button power-on and power-off circuit comprises a power source, a power source management chip, a single button, a power-on circuit and a power-off circuit, wherein the first end of the single button is connected with the power source, and the second end thereof is connected with the power-on circuit and the power-off circuit; the power source is controlled to generate a transient power signal and a continued power signal through the button time length of the single button; the power-on circuit starts the power source management chip and powers on based on the received transient power signal; the power-off circuit comprises a normal power-off circuit and a reset power-off circuit; the normal power-off circuit switches off the power source management chip and powers off based on the received continued power signal; the reset power-off circuit restarts and switches off the power source management chip and powers off through triggering the power source management chip to reset when the normal power-off circuit is failed in powering off. The single-button power-on and power-off circuit reduces power consumption, and improves product performance.

Description

technical field [0001] The invention relates to the technical field of switch circuits, in particular to a single-button switch circuit and a head-mounted display device. Background technique [0002] With the popularization of wearable products, wearable products begin to develop in the direction of miniaturization and portability, and their integration is getting higher and higher. As far as the switch button is concerned, the traditional toggle switch can completely power off the chip, but it takes up a lot of space and is not airtight. Using ordinary keys combined with chip control to switch on and off requires the chip to continue to work after booting, and once the chip is dead, it cannot be shut down normally; after shutting down, the chip is always in standby mode, which consumes more power. [0003] Therefore, need a kind of one-button switch machine circuit, avoid above-mentioned defect. Contents of the invention [0004] The object of the present invention is ...

AI Technical Summary

Problems solved by technology

As far as the switch button is concerned, the traditional toggle switch can completely power off the chip, but it takes up a lot of space and the airtightness is not good

Using ordinary buttons combined with chip control to switch on and off requires the chip to continue to work after booting, and once the chip is dead, it cannot be shut down normally; after shutting down, the chip is always in standby mode, which consumes more power

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