Method for controlling on and off of double CPU TV set by SCART interface
A switch control, TV technology, applied to color TV parts, TV system parts, TV, etc., can solve the problems of SCART signal detection and processing difficulties
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[0016] Example 1. A kind of switch machine control method of dual-CPU television through SCART interface, such as figure 1 shown. It includes setting the main CPU to be responsible for the operation of the whole machine software system, digital video signal deinterlacing processing, integrated image control and other functions, setting the main and sub CPUs to communicate through the PC bus connection and connecting their respective I / O ports through a dedicated line. It also includes the following steps:
[0017] (1) Set the sub-CPU to be responsible for the signal detection and system wake-up functions of the whole machine;
[0018] (2) The user sets the No. 1 SCART port and the No. 2 SCART port of the TV set through the remote control: write the two flag bits of the level detection start-up control information of ADC1 and ADC2 into the EEPROM of the sub-CPU middle;
[0019] (3) In the standby state, if the sub-CPU detects the power-on signal from port 1 or port 2 of the...
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