Self recovery system and state detecting method of self recovery system

Abstract

The embodiment of the invention relates to a self recovery system and a state detecting method of the self recovery system. The technical problem that during recovery of the current independent watchdog, a projector is in a standby state all the time after the projector is reset, and then a screen is black and does not display in the standby state is solved. The self recovery system comprises a monitoring module, a control module and a latch module, wherein the monitoring module and the control module are electrically connected; the latch module is electrically connected with the control module and is used for locking the working state of the system; the control module is used for acquiring a reset signal of the monitoring module to reset a host machine; a state type output by the latch module is detected, if the state type is a default state, the host machine enters the standby state, and if the state type is a reset abnormal state, a preset abnormity processing mode is executed, so that the host machine is reset to the working state before abnormity; the reset abnormal state is that the state type output by the latch module is the last preset state after the host machine is started.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to an automatic recovery system and a state detection method of the automatic recovery system. Background technique [0002] The projector of the DLP splicing wall system generally has several working states: power off, power on standby and normal working state. The main control core of the projector is the controller (CPU, MCU or FPGA, etc.), and the standby state and normal working state of the projector are controlled by the controller. Electronic devices such as controllers may have abnormal working conditions due to their own reasons (program runaway, etc.) or external reasons (electromagnetic interference, etc.) during operation. [0003] At present, for the problem of controller reset, the industry usually adds a watchdog circuit when designing this kind of circuit. Under the action of the watchdog circuit, it can ensure that the controller can be reset back to the...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides an automatic recovery system and a state detection method of the automatic recovery system, which solves the current independent watchdog reset, because it cannot determine whether it is a normal power-on reset or a reset after an abnormal controller, so It will cause the projector to stay in the standby state after reset, and the resulting standby state will be in a black screen with no display. The technical problem that the controller is abnormal will cause the projector to go black and the image cannot be displayed normally. The technical problem has been solved

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