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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

Active Publication Date: 2007-09-12
HISENSE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is very difficult for the dual-CPU controlled TV to detect and process the SCART signal, so it is difficult to control the switch machine through the SCART interface.

Method used

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  • Method for controlling on and off of double CPU TV set by SCART interface

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Embodiment 1

[0016] Example 1. A method for controlling the power on and off of a dual-CPU television through a SCART interface, as shown in FIG. 1 . It includes setting the main CPU to be responsible for the operation of the whole software system, digital video signal de-interlacing processing, integrated image control and other functions, setting the main and sub CPU through I 2 The C bus SCL and SDA are connected for communication and connected to 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 SCART port 1 and port 2 of the TV set through the remote control: there are two flag bits for the level detection power-on control information of the analog-to-digital converter ADC1 and the analog-to-digital converter ADC2 Write into the EEPROM of the sub-CPU;

[0019] (3) In the standby state, if ...

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Abstract

A method for switching on / off double CPU television set through SCART interface, which contains setting sub-CPU for signal detection and awakening, setting No 1 and No 2 SCART interface, writing the level detection switching on information zone bit of ADC1 and ADC2 in EEPROM of CPU, sub-CPU detecting the switching signal in SCART1 or SCART2 interface and reading out user SCART setting, judging corresponded zone bit, if it 1 then switching on, if it is 0 then no any operation until the remote controller key signal coming and switching according to normal mode, when switching off, the main CPU receiving SCART switching off signal and executing switching off operation according to normal mode. Said invention can reduce power consumption.

Description

technical field [0001] The invention belongs to the technical field of television circuits, and more specifically relates to the design of a dual-CPU TV set control method for switching on and off via a SCART interface, so as to realize the control function of switching on and off through the SCART interface. Background technique [0002] With the development of TV signal digital processing technology, the performance of TV sets has also been rapidly improved. But in general, the high performance of the TV will inevitably lead to high power consumption. In order to reduce power consumption and improve efficiency, many high-end TVs adopt a dual-CPU control processing method. The main CPU processes various signal data, while the sub-CPU is only responsible for switching on and off. It can solve the contradiction that high performance will inevitably bring high power consumption, and greatly reduce its power consumption while improving the high performa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/44
Inventor 菅怀刚洪烨蒋宝珠
Owner HISENSE
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